CN117301933A - Charging pile charging and discharging power adjusting method and device and electronic equipment - Google Patents
Charging pile charging and discharging power adjusting method and device and electronic equipment Download PDFInfo
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- 229910052799 carbon Inorganic materials 0.000 claims abstract description 396
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- 238000004146 energy storage Methods 0.000 description 18
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/10—Emission reduction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Abstract
The invention discloses a charging pile charging and discharging power adjusting method and device and electronic equipment. Wherein the method comprises the following steps: receiving a target electric energy state control request; responding to a target electric energy state control request, and acquiring a change amount of an electric power carbon emission coefficient, a historical electric power carbon emission coefficient, a target electric power carbon emission coefficient in a preset power grid, a target electric energy state control characteristic parameter corresponding to a target charging pile and a target battery electric quantity corresponding to a target electric automobile; determining an electric energy state power curve corresponding to the target charging pile according to the target electric energy state characteristic parameters and the target battery electric quantity; and determining the target electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power carbon emission coefficient and the target electric power carbon emission coefficient. The invention solves the technical problem that carbon emission pollution to a certain extent can be generated when the charge and discharge power of the charge pile is regulated in the related art.
Description
Technical Field
The invention relates to the field of electric automobiles, in particular to a charging pile charging and discharging power adjusting method and device and electronic equipment.
Background
Excessive carbon emissions cause climate change, with adverse effects, and reduction of carbon emissions has become a fundamental consensus of human society. To mechanically motivate the use of low carbon electricity, a variety of electricity carbon emission signals have been proposed to trace back the amount of carbon emissions of the electricity used to evaluate and constrain the carbon behavior of the user, such as carbon emission coefficients. However, in the related art, there is a problem in that carbon emission pollution is generated to some extent when the charge and discharge power of the charge pile is adjusted.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the invention provides a charging and discharging power adjusting method and device of a charging pile and electronic equipment, which at least solve the technical problem that carbon emission pollution to a certain extent is generated when the charging and discharging power of the charging pile is adjusted in the related technology.
According to an aspect of the embodiment of the present invention, there is provided a charging and discharging power adjustment method for a charging pile, including: receiving a target electric energy state control request, wherein the target electric energy state control request comprises a charging state control request and a discharging state control request; the method comprises the steps of responding to a target electric energy state control request, obtaining a change amount of an electric power carbon emission coefficient, a historical electric power carbon emission coefficient, a target electric power carbon emission coefficient in a preset power grid, a target electric energy state control characteristic parameter corresponding to a target charging pile and a target battery electric quantity corresponding to a target electric automobile, wherein the target electric automobile is connected with the target charging pile, the historical electric power carbon emission coefficient comprises a plurality of electric power carbon emission coefficients in a preset time length obtained from the preset power grid, and the target electric power carbon emission coefficient is an electric power carbon emission coefficient corresponding to a preset moment obtained from the preset power grid; determining an electric energy state power curve corresponding to the target charging pile according to the target electric energy state characteristic parameters and the target battery electric quantity; determining a target electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power carbon emission coefficient and the target electric power carbon emission coefficient; and sending a target electric energy state control instruction to the target charging pile so as to control the target charging pile to charge the target electric automobile with the target electric energy state power under the condition that the target electric energy state control request is the charging state control request, and controlling the target charging pile to receive the electric quantity released by the target electric automobile with the target electric energy state power under the condition that the target electric energy state control request is the discharging state control request.
Optionally, the determining, according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power carbon emission coefficient, and the target electric power carbon emission coefficient, the target electric energy state power corresponding to the target charging pile includes: obtaining rated maximum electric energy state power of the target electric automobile and rated electric energy state power of the target charging pile; determining initial electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power carbon emission coefficient and the target electric power carbon emission coefficient; and determining the minimum electric energy state power from the rated maximum electric energy state power, the rated electric energy state power and the initial electric energy state power, and taking the minimum electric energy state power as the target electric energy state power corresponding to the target charging pile.
Optionally, the determining, according to the power curve of the electric energy state, the change amount of the electric power carbon emission coefficient, the historical electric power carbon emission coefficient, and the target electric power carbon emission coefficient, the initial power of the electric energy state corresponding to the target charging pile includes: determining a historical average value electric power carbon emission coefficient, a historical electric power maximum value carbon emission coefficient and a historical electric power minimum value carbon emission coefficient according to the historical electric power carbon emission coefficient; and determining initial electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power average value carbon emission coefficient, the historical electric power maximum value carbon emission coefficient, the historical electric power minimum value carbon emission coefficient and the target electric power carbon emission coefficient.
Optionally, the determining, according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power average carbon emission coefficient, the historical electric power maximum carbon emission coefficient, the historical electric power minimum carbon emission coefficient, and the target electric power carbon emission coefficient, determines an initial electric energy state power corresponding to the target charging pile, including at least one of the following: under the condition that the target electric power carbon emission coefficient is larger than or equal to the historical electric power maximum carbon emission coefficient, determining that the rated maximum electric energy state power is the initial electric energy state power corresponding to the target charging pile; determining a first electric energy state power as an initial electric energy state power corresponding to the target charging pile under the condition that the target electric power carbon emission coefficient is smaller than the historical electric power maximum carbon emission coefficient and is larger than or equal to the sum of the historical electric power average carbon emission coefficient and the electric power carbon emission coefficient variation, wherein the first electric energy state power is determined according to the rated maximum electric energy state power, the electric power carbon emission coefficient variation, the historical electric power average carbon emission coefficient, the historical electric power maximum carbon emission coefficient, the electric energy state power curve and the target electric power carbon emission coefficient; determining a predetermined value as an initial electric energy state power corresponding to the target charging pile under the condition that the target electric power carbon emission coefficient is smaller than the sum of the coefficients and is larger than or equal to the difference between the historical electric power average value carbon emission coefficient and the electric power carbon emission coefficient variation; determining a second electric energy state power as an initial electric energy state power corresponding to the target charging pile under the condition that the target electric power carbon emission coefficient is smaller than the coefficient difference and larger than or equal to the historical electric power minimum value carbon emission coefficient, wherein the second electric energy state power is determined according to the rated electric energy state power, the electric power carbon emission coefficient variation, the historical electric power average value carbon emission coefficient, the historical electric power minimum value carbon emission coefficient, the electric energy state power curve and the target electric power carbon emission coefficient; and under the condition that the target electric power carbon emission coefficient is smaller than the historical electric power minimum value carbon emission coefficient, determining the rated electric energy state power as the initial electric energy state power corresponding to the target charging pile.
Optionally, before determining the initial power state power corresponding to the target charging pile according to the power state power curve, the power carbon emission coefficient variation, the historical power average carbon emission coefficient, the historical power maximum carbon emission coefficient, the historical power minimum carbon emission coefficient, and the target power carbon emission coefficient, the method further includes: determining a first difference between the historical power maximum carbon emission coefficient and the target power carbon emission coefficient, a second difference between the historical power maximum carbon emission coefficient and the historical power average carbon emission coefficient, and a third difference between the second difference and the power carbon emission coefficient variation, and determining a fourth difference between the historical power average carbon emission coefficient and the power carbon emission coefficient variation, and a fifth difference between the fourth difference and the target power carbon emission coefficient, and a sixth difference between the fourth difference and the historical power minimum carbon emission coefficient; determining a first ratio of the first difference to the third difference and a second ratio of a fifth difference to the sixth difference; determining a first product of the rated maximum power state power and the first proportion under a target index term, and determining a second product of the rated power state power and the second proportion under the target index term, wherein the target index term is determined according to the power state power curve; determining a difference between the first product and the nominal maximum power state power as the first power state power and determining the second product as the second power state power.
Optionally, after the sending the target power state control command to the target charging pile, the method further includes: determining a target carbon emission amount generated after the target charging pile executes the target electric energy state control instruction; comparing the target carbon emission with a preset carbon emission to obtain a comparison result; and sending alarm information to a preset terminal under the condition that the target carbon emission is larger than the preset carbon emission as a result of the comparison.
Optionally, the determining, according to the target electric energy state characteristic parameter and the target battery power, an electric energy state power curve corresponding to the target charging pile includes: determining a seventh difference between a predetermined coefficient and the target power state characteristic parameter, an eighth difference between the predetermined coefficient and the target battery power, and a product of the target power state characteristic parameter and the target battery power; determining a third ratio of the product to the eighth difference; determining a sum of the seventh difference and the third ratio; and determining an electric energy state power curve corresponding to the target charging pile according to the sum.
According to an aspect of the embodiment of the present invention, there is provided a charging and discharging power adjusting device of a charging pile, including: the receiving module is used for receiving a target electric energy state control request, wherein the target electric energy state control request comprises a charging state control request and a discharging state control request; the acquisition module is used for responding to the target electric energy state control request, acquiring the electric power carbon emission coefficient variation quantity, the historical electric power carbon emission coefficient, the target electric power carbon emission coefficient in a preset power grid, target electric energy state control characteristic parameters corresponding to a target charging pile and target battery electric quantity corresponding to a target electric automobile, wherein the target electric automobile is connected with the target charging pile, the historical electric power carbon emission coefficient comprises a plurality of electric power carbon emission coefficients in a preset time acquired from the preset power grid, and the target electric power carbon emission coefficient is an electric power carbon emission coefficient corresponding to a preset moment acquired from the preset power grid; the first determining module is used for determining an electric energy state power curve corresponding to the target charging pile according to the target electric energy state characteristic parameter and the target battery electric quantity; the second determining module is used for determining target electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power carbon emission coefficient and the target electric power carbon emission coefficient; and the sending module is used for sending a target electric energy state control instruction to the target charging pile so as to control the target charging pile to charge the target electric automobile with the target electric energy state power under the condition that the target electric energy state control request is the charging state control request, and controlling the target charging pile to receive the electric quantity released by the target electric automobile with the target electric energy state power under the condition that the target electric energy state control request is the discharging state control request.
According to an aspect of an embodiment of the present invention, there is provided an electronic apparatus including: a processor; a memory for storing the processor-executable request; wherein the processor is configured to execute the request to implement the charging and discharging power adjustment method of the charging pile according to any one of the above.
According to an aspect of an embodiment of the present invention, there is provided a computer-readable storage medium including: the computer readable storage medium, when used by a processor of an electronic device, enables the electronic device to perform a method of charging and discharging power adjustment of a charging peg as described in any one of the above.
In the embodiment of the invention, the target electric energy state control request is received, wherein the target electric energy state control request comprises a charging state control request, a discharging state control request is responded, the change amount of an electric carbon emission coefficient, a historical electric carbon emission coefficient and a target electric carbon emission coefficient in a preset power grid are obtained, the target electric energy state control characteristic parameter corresponding to the target charging pile and the target battery electric quantity corresponding to the target electric automobile are obtained, then an electric energy state power curve corresponding to the target charging pile is determined according to the target electric energy state characteristic parameter and the target battery electric quantity, then the target electric energy state power corresponding to the target charging pile is determined according to the electric energy state power curve, the change amount of the electric carbon emission coefficient, the historical electric carbon emission coefficient and the target electric carbon emission coefficient, and finally a target electric energy state power corresponding to the target charging pile is determined by sending a target electric energy state control instruction to the target charging pile, so that the target charging pile is controlled to charge the target electric automobile with the target electric energy state power under the condition that the target electric energy state control request is the charging state control request, and the target electric automobile is controlled to receive the electric quantity released by the target electric automobile with the target electric energy state power under the condition that the target electric energy state control request is the discharging state control request. The purpose of providing target electric energy state power for the target electric automobile to charge and discharge according to the charge and discharge power of the target charging pile is achieved. Therefore, the technical effect of adjusting the charge and discharge power of the target charge pile according to the target electric power carbon emission coefficient and determining the charge and discharge operation of the electric vehicle taking the target electric energy state power as the target is achieved, and the technical problem that carbon emission pollution to a certain extent can be generated when the charge and discharge power of the charge pile is adjusted in the related technology is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
fig. 1 is a flowchart of a charge-discharge power adjustment method of a charge pile according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a function calculation of a charge-discharge control circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a method for a DC-DC converter employing a constant power control mode according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a commanded charge/discharge power function for an electric vehicle battery in a chargeable and dischargeable condition in a method according to an embodiment of the present invention;
fig. 5 is a block diagram of a charge-discharge power adjusting device of a charge pile according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
According to an embodiment of the present invention, there is provided an embodiment of a charge-discharge power adjustment method of a charge pile, it should be noted that the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer-executable requests, and that although a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different from that herein.
Fig. 1 is a flowchart of a method for adjusting charge and discharge power of a charging pile according to an embodiment of the present invention, as shown in fig. 1, the method includes the steps of:
step S102, receiving a target electric energy state control request, wherein the target electric energy state control request comprises a charging state control request and a discharging state control request;
in the providing step S102, the target power state control request includes a charge state control request and a discharge state control request, where the charge state control request and the discharge state control request may be different request types for controlling the power state of the energy storage device.
The charge state control request may be based on the battery level of the energy storage device being too low, requiring charging to maintain normal operation; the discharge state control request may be based on an operation in which the energy storage device consumes an amount of power or an external device needs to obtain an excess amount of power from the energy storage device; the energy-storage equipment in the step can be an electric automobile, the external equipment can be a charging pile, and the self-adaption setting can be carried out according to specific types and specific applications and scenes.
It should be noted that, according to the actual requirement, the electric energy state of the energy-storable device is controlled by sending a corresponding request, so as to realize the charging or discharging operation.
Step S104, a target electric energy state control characteristic parameter corresponding to a target charging pile and a target battery electric quantity corresponding to a target electric automobile are obtained in response to a target electric energy state control request, wherein the target electric automobile is connected with the target charging pile, the historical electric energy carbon emission coefficient comprises a plurality of electric energy carbon emission coefficients in a preset time period obtained from a preset power grid, and the target electric energy carbon emission coefficient is an electric energy carbon emission coefficient corresponding to a preset moment obtained from the preset power grid;
in the providing step S104, the above-mentioned carbon emission coefficient variation is the carbon emission amount generated by consuming power in a unit time, and the target electric energy state control parameter corresponding to the target charging pile may be used to define and adjust the behavior and performance of the charging and discharging policy so as to meet the specific requirements and targets, where the value range of the target electric energy state control parameter may be a value between 0 and 1, which is not limited herein, and may be set according to the actual application scenario and the design of the actual charging pile.
Step S106, determining an electric energy state power curve corresponding to the target charging pile according to the target electric energy state characteristic parameter and the target battery electric quantity;
In the step S106, the target battery power is the battery power corresponding to the target electric vehicle battery, and the electric energy state power curve corresponding to the target charging pile may represent the change speed of the target electric energy state power, that is, the inclination degree of the electric energy state power curve, and may represent the change speed of the charging and discharging power of the target charging pile in the charging and discharging process.
In the previous step, according to the determined characteristic parameters of the target electric energy state and the electric quantity of the target battery, determining an electric energy state power curve corresponding to the target charging pile.
Step S108, determining a target electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power carbon emission coefficient and the target electric power carbon emission coefficient;
in the providing step S108 of the present application, the target electric energy state power refers to the charge and discharge power of the storable device (target electric vehicle) in the electric power system at a specific time, which may be represented as a positive value or a negative value, depending on whether the target electric energy state control request is a charge state control request or a discharge state control request, that is, whether the target electric energy state control request is in a charge state or a discharge state.
It should be noted that, when the target electric energy state power is a positive value, it indicates that the storable device is being charged, and when the target electric energy state power is a negative value, it indicates that the storable device is being discharged. For example, when an electric vehicle is connected to a charging post for charging, the electric vehicle has a positive state power, indicating that the battery is absorbing energy for charging. When the electric vehicle runs, the electric vehicle can release energy to drive the motor, and at the moment, the electric energy state power of the electric vehicle is negative, which indicates that the electric vehicle is discharging to the power grid. By monitoring and controlling the electrical energy status power, the charging and discharging process of the electrical energy storage device (target charging pile) can be regulated and optimized to meet the user requirements. In the process, whether the electric automobile is charged or discharged, the battery of the electric automobile is charged or discharged, so that the energy storage capacity of a large number of batteries in the system can be conveniently and effectively scheduled to a certain extent, and the system participates in power demand response.
Step S110, a target electric energy state control command is sent to the target charging pile, so that the target charging pile is controlled to charge the target electric vehicle with the target electric energy state power when the target electric energy state control request is a charging state control request, and the target charging pile is controlled to receive the electric quantity released by the target electric vehicle with the target electric energy state power when the target electric energy state control request is a discharging state control request.
In the step S110 provided in the present application, according to the implementation method of the foregoing steps, it is assumed that a charging control instruction needs to be sent to the target electric vehicle to implement target electric energy state control, for example, the target electric vehicle needs to be charged to a specific target electric energy state, where the target electric energy state is set according to its own requirement, for example, to 80% of the electric quantity. And then the user sends a charging control instruction to the target charging pile to request the target electric automobile to be charged to a target electric energy state, and the formulated target electric energy state power is the proper charging power. And then, after receiving a charging control instruction, the target charging pile starts to charge the target electric automobile according to the designated target electric energy state power. The charging stake may adjust the charging power to achieve a desired charging rate to charge the battery of the electric vehicle or to achieve a target electrical energy state.
In the above scenario, the target electric energy state for charging the target electric vehicle is the target electric energy state for the target charging stake, and it is assumed here that the user wants to release the surplus electric energy by using the target electric vehicle, and store it in the power grid for subsequent use. Firstly, determining the magnitude and time period of the released electric quantity, taking the magnitude and time period as a target electric energy state, and sending a discharge control instruction to a target charging pile through an electric automobile system to request the electric quantity of the target electric automobile to be released into a power grid. You provide a discharge request and designate the target power state power as the appropriate discharge power. And sending a discharge control instruction to the target charging pile through the electric automobile system to request the electric quantity of the target electric automobile to be released into the power grid. You provide a discharge request and designate the target power state power as the appropriate discharge power. In the discharging process, the charging pile and the electric automobile system can monitor the electric energy state and the discharging quantity of the electric automobile in real time. And once the charging process or the discharging process corresponding to the target electric energy state is finished, the charging pile stops receiving the electric quantity and feeds relevant information back to the electric automobile system and the power grid management system.
The above scenario is a specific application scenario of the electric vehicle for performing charge and discharge control, in actual situations, more technical details and safety considerations may be involved, and no more technical details and implementation process will be described in detail herein, so that corresponding operations may be performed according to the actual application scenario.
Receiving a target electric energy state control request through the steps S102-S110, wherein the target electric energy state control request includes a charge state control request and a discharge state control request, responding to the target electric energy state control request, obtaining a change amount of an electric carbon emission coefficient, a historical electric carbon emission coefficient and a target electric carbon emission coefficient in a preset power grid, a target electric energy state control characteristic parameter corresponding to the target charging pile and a target battery electric quantity corresponding to the target electric automobile, determining an electric energy state power curve corresponding to the target charging pile according to the target electric energy state characteristic parameter and the target battery electric quantity, determining a target electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the change amount of the electric carbon emission coefficient, the historical electric carbon emission coefficient and the target electric carbon emission coefficient, and finally sending a target electric energy state control instruction to the target charging pile, so that the target charging pile is controlled to charge the target electric automobile with the target electric energy state power under the condition that the target electric energy state control request is the charge state control request, and the target electric charging pile is controlled to receive the electric quantity released by the target electric automobile with the target electric energy state power under the condition that the target electric energy state control request is the target electric energy state control request. The purpose of providing target electric energy state power for the target electric automobile to charge and discharge according to the charge and discharge power of the target charging pile is achieved. Therefore, the technical effect of adjusting the charge and discharge power of the target charge pile according to the target electric power carbon emission coefficient and determining the charge and discharge operation of the electric vehicle taking the target electric energy state power as the target is achieved, and the technical problem that carbon emission pollution to a certain extent can be generated when the charge and discharge power of the charge pile is adjusted in the related technology is solved.
The above-described method of this embodiment is further described below.
As an alternative embodiment, determining the target power state corresponding to the target charging pile according to the power state power curve, the change amount of the power carbon emission coefficient, the historical power carbon emission coefficient, and the target power carbon emission coefficient includes: obtaining rated maximum electric energy state power of a target electric automobile and rated electric energy state power of a target charging pile; determining initial electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power carbon emission coefficient and the target electric power carbon emission coefficient; and determining the minimum electric energy state power from the rated maximum electric energy state power, the rated electric energy state power and the initial electric energy state power, and taking the minimum electric energy state power as the target electric energy state power corresponding to the target charging pile.
In this embodiment, before determining the target electric energy state power, the rated maximum electric energy state power of the target electric automobile is first obtained, including the rated maximum charging power and the rated maximum discharging power of the target electric automobile, and in addition, the rated electric energy state power of the target charging pile is also required to be obtained, including the rated charging power and the rated discharging power of the target charging pile. And then determining the initial electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power carbon emission coefficient and the target electric power carbon emission coefficient. Finally, limiting the determined initial electric energy state power, namely comparing the initial electric energy state power with the rated maximum electric energy state power of the target electric automobile and the rated electric energy state power of the target charging pile, and taking the initial electric energy state power as the target electric energy state power if the initial electric energy state power is smaller than the rated maximum electric energy state power of the target electric automobile and the rated electric energy state power of the target charging pile; and if the initial electric energy state power is larger than the target electric energy state power, taking the rated maximum electric energy state power of the target electric automobile as the target electric energy state power so as to perform charge and discharge operation for the target electric automobile. In the embodiment, the rated maximum electric energy state power of the target electric automobile is set, so that the use requirement of the battery of the electric automobile can be fully considered to a certain extent, the battery can be prevented from being overcharged or overdischarged in a short time, and the reliability and durability of the battery are improved.
As an alternative embodiment, determining the initial power state corresponding to the target charging pile according to the power state power curve, the change amount of the power carbon emission coefficient, the historical power carbon emission coefficient, and the target power carbon emission coefficient includes: determining a historical average value electric power carbon emission coefficient, a historical electric power maximum value carbon emission coefficient and a historical electric power minimum value carbon emission coefficient according to the historical electric power carbon emission coefficient; and determining initial electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power average value carbon emission coefficient, the historical electric power maximum value carbon emission coefficient, the historical electric power minimum value carbon emission coefficient and the target electric power carbon emission coefficient.
In this embodiment, in the process of determining the initial power state power corresponding to the target charging pile, it is necessary to calculate a historical average power carbon emission coefficient corresponding to a historical power carbon emission coefficient, a historical power maximum carbon emission coefficient, and a historical power minimum carbon emission coefficient, and then determine the initial power state power corresponding to the target charging pile according to the determined coefficients, and the power state power curve, the power carbon emission coefficient variation, and the target power carbon emission coefficient in this embodiment. The electric energy state power curve in the step can reflect the electric energy state power which can be provided by the electric power system under different load conditions at different moments. By combining the target electric power carbon emission coefficient, the charging and discharging power of the target charging pile can be reasonably regulated to the greatest extent in the corresponding carbon emission period, so that reasonable charging and discharging power is provided for charging and discharging of the electric automobile.
As an alternative embodiment, determining, according to the power curve of the electric energy state, the variation of the power carbon emission coefficient, the average power carbon emission coefficient of the historical power, the maximum power carbon emission coefficient of the historical power, the minimum power carbon emission coefficient of the historical power, and the target power carbon emission coefficient, the initial power of the electric energy state corresponding to the target charging pile includes at least one of: under the condition that the carbon emission coefficient of the target electric power is larger than or equal to the maximum carbon emission coefficient of the historical electric power, determining the rated maximum electric energy state power as the initial electric energy state power corresponding to the target charging pile; determining that the first electric energy state power is the initial electric energy state power corresponding to the target charging pile under the condition that the target electric power carbon emission coefficient is smaller than the historical electric power maximum carbon emission coefficient and is larger than or equal to the sum of the historical electric power average carbon emission coefficient and the electric power carbon emission coefficient variation, wherein the first electric energy state power is determined according to the rated maximum electric energy state power, the electric power carbon emission coefficient variation, the historical electric power average carbon emission coefficient, the historical electric power maximum carbon emission coefficient, the electric energy state power curve and the target electric power carbon emission coefficient; determining a predetermined value as the initial electric energy state power corresponding to the target charging pile under the condition that the target electric power carbon emission coefficient is smaller than the coefficient sum and is larger than or equal to the coefficient difference between the historical electric power average value carbon emission coefficient and the electric power carbon emission coefficient variation; determining the second electric energy state power as the initial electric energy state power corresponding to the target charging pile under the condition that the target electric power carbon emission coefficient is smaller than the coefficient difference and larger than or equal to the historical electric power minimum carbon emission coefficient, wherein the second electric energy state power is determined according to the rated electric energy state power, the electric power carbon emission coefficient variation, the historical electric power average value carbon emission coefficient, the historical electric power minimum carbon emission coefficient, the electric energy state power curve and the target electric power carbon emission coefficient; and under the condition that the carbon emission coefficient of the target electric power is smaller than the carbon emission coefficient of the minimum value of the historical electric power, determining the rated electric energy state power as the initial electric energy state power corresponding to the target charging pile.
In this embodiment, it is assumed that the historical electric power carbon emission coefficient in the previous step is A, B, C, D, and that the historical electric power average carbon emission coefficient corresponding to the historical electric power polar carbon emission coefficient is E, that is, (A+B+C+D)/4, and the corresponding historical electric power maximum carbon emission coefficient is A, the corresponding historical electric power minimum carbon emission coefficient is D, the electric power state power curve is m, the electric power carbon emission coefficient variation amount is ΔC, and the target electric power carbon emission coefficient is F, and the rated maximum electric power state power of the target electric vehicle is set to P max 。
In this embodiment, the initial power state corresponding to the corresponding target charging pile is determined based on the different size intervals where the target power carbon emission coefficient is located, and the following cases are described one by one.
Under the condition that the target electric power carbon emission coefficient F is greater than or equal to the historical electric power maximum carbon emission coefficient A, namely, under the condition that F is greater than or equal to A, determining the rated maximum electric energy state power P max And (5) charging the initial electric energy state power corresponding to the pile for the target.
And determining that the first electric energy state power is the initial electric energy state power corresponding to the target charging pile under the condition that the target electric power carbon emission coefficient F is smaller than the historical electric power maximum carbon emission coefficient A and is larger than or equal to the sum (E+delta C) of the historical electric power average carbon emission coefficient E and the electric power carbon emission coefficient variation delta C, namely, under the condition that (E+delta C) is less than or equal to F and less than A.
And determining the predetermined value as the initial electric energy state power corresponding to the target charging pile in the case that the target electric power carbon emission coefficient F is smaller than the coefficient sum (E+DeltaC) and is larger than or equal to the coefficient difference (E-DeltaC) between the historical electric power average value carbon emission coefficient E and the electric power carbon emission coefficient variation DeltaC, namely, in the case that (E-DeltaC) is less than or equal to F < (E+DeltaC).
And determining that the second electric energy state power is the initial electric energy state power corresponding to the target charging pile under the condition that the target electric power carbon emission coefficient F is smaller than the coefficient difference (E-delta C) and is larger than or equal to the historical electric power minimum value carbon emission coefficient D, namely, under the condition that D is less than or equal to F < (E-delta C).
And under the condition that the target electric power carbon emission coefficient F is smaller than the historical electric power minimum value carbon emission coefficient D, namely under the condition that F < D, determining the rated electric energy state power as the initial electric energy state power corresponding to the target charging pile.
It should be noted that, in the above embodiment, based on the relative relationship between the target electric power carbon emission coefficient and the historical electric power carbon emission coefficient, the initial electric energy state power is reasonably adjusted, which is equivalent to increasing the charging power of the charging pile in a period of time in which the target electric power carbon emission coefficient is lower, so as to meet the charging requirement of the electric vehicle. And the charging power of the charging pile can be reduced in a time period with a higher target electric power carbon emission coefficient, and the carbon emission can be effectively reduced to a certain extent.
As an alternative embodiment, before determining the initial power state corresponding to the target charging pile according to the power state power curve, the power carbon emission coefficient variation, the historical power average carbon emission coefficient, the historical power maximum carbon emission coefficient, the historical power minimum carbon emission coefficient, and the target power carbon emission coefficient, the method further includes: determining a first difference between the historical power maximum carbon emission coefficient and the target power carbon emission coefficient, a second difference between the historical power maximum carbon emission coefficient and the historical power average carbon emission coefficient, and a third difference between the second difference and the power carbon emission coefficient variation, and determining a fourth difference between the historical power average carbon emission coefficient and the power carbon emission coefficient variation, and a fifth difference between the fourth difference and the target power carbon emission coefficient, and a sixth difference between the fourth difference and the historical power minimum carbon emission coefficient; determining a first ratio of the first difference to the third difference and a second ratio of the fifth difference to the sixth difference; determining a first product of rated maximum electric energy state power and a first proportion under a target index term, and determining a second product of rated electric energy state power and a second proportion under the target index term, wherein the target index term is determined according to an electric energy state power curve; the difference between the first product and the nominal maximum power state power is determined as the first power state power and the second product is determined as the second power state power.
In this embodiment, it is possible to determine that the first difference between the historical electric power maximum carbon emission coefficient and the target electric power carbon emission coefficient in this example is (a-F) based on the coefficients in the above-described assumption step; and a second difference between the historical power maximum carbon emission coefficient and the historical power average carbon emission coefficient is (A-E); and the third difference value of the second difference value and the electric power carbon emission coefficient variation is (A-E-delta C), the fourth difference value of the historical electric power average value carbon emission coefficient and the electric power carbon emission coefficient variation is (E-delta C), the fifth difference value of the fourth difference value and the target electric power carbon emission coefficient is (E-delta C-F), and the sixth difference value of the fourth difference value and the historical electric power minimum value carbon emission coefficient is (E-delta C-D); determining a first ratio of the first difference to the third difference as(a-F)/((a-E- Δc)), and determining a second ratio of the fifth difference to the sixth difference as (E- Δc-F)/(E- Δc-D); determining a first product of rated maximum electric energy state power and a first proportion under a target index term as P max ((A-F)/(A-E-D)) m And determining a second product of the rated power state power and a second proportion under the target index term as P max ((E-ΔC-F)/(E-ΔC-D)) m Wherein, the target index term is determined as m according to the electric energy state power curve; determining the difference between the first product and the nominal maximum power state power as the first power state power, i.e. the first power state power is P max ((A-F)/(A-E-D)) m And determining the second product as a second power state, i.e. the second power state is P max ((E-ΔC-F)/(E-ΔC-D)) m 。
As an alternative embodiment, after sending the target power state control command to the target charging pile, the method further includes: determining a target carbon emission amount generated after the target charging pile executes the target electric energy state control instruction; comparing the target carbon emission with a preset carbon emission to obtain a comparison result; and sending alarm information to a preset terminal under the condition that the target carbon emission is larger than the preset carbon emission as a comparison result.
In this embodiment, according to the transmitted target electric energy state control command, the target carbon emission amount generated under the command is determined, and the target carbon emission amount is compared with the preset carbon emission amount, so as to obtain a corresponding comparison result. If the target carbon emission is larger than the preset carbon emission, the target emission is beyond the expected range, at this time, warning information can be sent through the preset terminal, related personnel can take corresponding measures to adjust the charging and discharging strategies of the target charging pile according to the warning information, or take other measures to reduce the carbon emission, the warning information and the related measures are not limited, and specific application scenes and requirements can be set automatically.
As an optional embodiment, determining the power curve of the electric energy state corresponding to the target charging pile according to the characteristic parameter of the target electric energy state and the electric quantity of the target battery includes: determining a seventh difference between the predetermined coefficient and the target electric energy state characteristic parameter, an eighth difference between the predetermined coefficient and the target battery electric quantity, and a product of the target electric energy state characteristic parameter and the target battery electric quantity; determining a third ratio of the product to the eighth difference; determining a sum of the seventh difference and the third ratio; and determining an electric energy state power curve corresponding to the target charging pile according to the sum.
In this embodiment, it is assumed that the predetermined coefficient may be set to be a constant 1, the target power state characteristic parameter is set to be k, and the target battery power is set to be a, and at this time, for the seventh difference value (1-k), the eighth difference value (1-a), the product of the target power state characteristic parameter and the target battery power is k×a, the third ratio of the determined product and the eighth difference value is k×a/(1-a), and the sum of the seventh difference value and the third ratio is (1-k)/(k×a/(1-a)), that is, the sum of the determined seventh difference value and the third ratio is the power curve of the power state corresponding to the target charging pile.
It should be noted that, in the above embodiment, according to the power curve of the electric energy state corresponding to the target charging pile, the charging and discharging rate can be controlled, so as to ensure that the charging and discharging process is normally performed within the bearable range of the battery of the electric vehicle. By controlling the charge and discharge rate, excessive energy loss and heat generation can be effectively reduced, so that the charge and discharge rate is improved. Therefore, the method can effectively improve the stability and reliability of the battery.
Based on the foregoing embodiments and optional embodiments, an optional implementation is provided, and is specifically described below.
In the related art, there is a technical problem of carbon emission pollution to a certain extent that may occur when the charge and discharge power of the charging pile is adjusted. For example, in the method for adjusting the charge and discharge power of the charge pile in the related art, the electric carbon emission coefficient is not considered, the relationship between the charge and discharge power of the charge pile and the electric carbon emission coefficient is ignored, and the charge and discharge power of the charge pile cannot be adjusted in time according to the change of the electric carbon emission coefficient, so that a problem of carbon emission pollution to a certain extent is generated when the charge and discharge power is adjusted.
In view of this, an alternative embodiment of the present invention provides a method for adjusting charging and discharging power of a charging pile, and the alternative embodiment of the present application is described in detail below.
S1, acquiring a plurality of electric power carbon emission coefficients C1, … C (T) in the duration of electric power carbon emission coefficient variation delta C, T in a power grid, namely a historical electric power carbon emission coefficient (C1, … C (T)), a target electric power carbon emission coefficient C (T) corresponding to the moment T, a target electric energy state characteristic parameter k corresponding to a charging pile and a target battery electric quantity SOC corresponding to an electric automobile;
s2, determining an electric energy state power curve n corresponding to the charging pile according to the target electric energy state characteristic parameter k and the target battery electric quantity SOC, wherein the specific calculation process is as follows:
n＝(1-k)+k·SOC/(1-SOC)
s3, determining target electric energy state power corresponding to the charging pile according to the electric energy state power curve n, the electric power carbon emission coefficient variation delta C, the historical electric power carbon emission coefficient (C1, … C (T)), and the target electric power carbon emission coefficient C (T);
before determining the target power state corresponding to the charging pile, it is necessary to calculate the historical power maximum carbon emission coefficient C corresponding to the historical power carbon emission coefficient (C1, … C (T)) max Historical electric power minimum value carbon emission coefficient C min The historical power average carbon emission coefficient (C1+C2 … C (T))/T was set to C mean . And determining rated maximum electric energy state power of the electric automobile, including rated maximum discharge state power and rated maximum charge state power, and rated electric energy state power of the charging pile, including rated charge state power and rated discharge state power. And then determining the relative relation with the target electric power carbon emission coefficient according to the historical electric power maximum carbon emission coefficient, the historical electric power minimum carbon emission coefficient and the historical electric power average carbon emission coefficient, and finally determining the target electric energy state power corresponding to the charging pile according to the relative relation, wherein the specific implementation steps are as follows:
In the above-mentioned formula(s),indicating the rated maximum discharge state power corresponding to the electric automobile, < > for>Representing the rated maximum charging state power corresponding to the charging pile, P * Representing a target electrical energy state power.
In the above formula, C (t) is equal to or greater than C max Under the condition that the target electric energy state power is rated maximum electric energy state power; at C max >C(t)≥C mean In the case of +ΔC, the target power state is the first power state; at C mean +ΔC>C(t)≥C mean In the case of ΔC, the target electrical energy state power is a predetermined value, at C mean -ΔC>C(t)≥C min Under the condition, the target electric energy state power is the second electric energy state power; at C min And (3) under the condition of more than or equal to C (t), the target electric energy state power is the rated electric energy state power.
When the target electric energy state power is determined, the second electric energy state power is expressed as a positive value, the first electric energy state power is expressed as a negative value, and the change of the target electric energy state power is limited between the rated charge state power of the charging pile and the rated maximum discharge state power of the electric vehicle.
Further, the commanded charge/discharge power function is:
P * ＝f(C(t)，SOC，P c,rated ，P d，rated )
wherein, C (t) is a target electric power carbon emission coefficient, and SOC is a target battery electric quantity of the electric automobile; p (P) c，rated For rated charge state power of charging pile, P d，rated The rated discharge state power of the electric automobile.
And S4, sending a target electric energy state control instruction to the charging pile so as to control the charging pile to charge the electric automobile with the target electric energy state power under the condition that the target electric energy state control request is a charging state control request, and controlling the charging pile to receive the electric quantity released by the electric automobile with the target electric energy state power under the condition that the target electric energy state control request is a discharging state control request.
It should be noted that, the execution of the method steps in S1-S4 corresponds to the function calculation schematic diagram of the charge-discharge control circuit in the embodiment of the present invention shown in fig. 2, where P is the following v_max The rated maximum electric energy state power allowed for the electric vehicle, and the BMS is a battery management system of the electric vehicle. According to the function calculation schematic diagram shown in fig. 2, a schematic diagram of a method when the dc-dc converter shown in fig. 3 adopts a constant power control mode is given, where the chargeable device 5 (target electric vehicle) refers to a device having an energy storage capability with electric power as input or output, for example: the energy storage capacity parameters of the energy storage equipment 5 comprise battery power SOC and rated maximum power discharge state power P d，max And rated charge state power P of a direct current charging device (target charging pile) c，max . The output end of the energy storage device 5 is connected with the control circuit 32 through standard communication modes such as an electric automobile direct current charging pile interface and cable, an electric power consumer product data cable and interface, a device communication cable and interface and the like so as to transmit electric power and information simultaneously.
The corresponding direct current charging device can be used as a unidirectional charging pile, a bidirectional charging pile, a power adapter, a power distribution device and the like. More specifically, the dc charging device and the corresponding storable device 5 constitute a combination, which can be connected to the dc bus 2 in various or the same plurality.
The control circuit 32 in the figure comprises an electric energy state power curve calculation module 321, an electric power carbon emission signal recording and calculation module 322, a limiting module 323 and a PWM wave modulation module 324 corresponding to the charging pile, wherein the control circuit 32 is configured to determine an instruction target electric energy state power and generate a PWM wave through each calculation module shown in fig. 2 according to parameters set by the communication control device 1, a target electric power carbon emission coefficient of a power grid, battery parameters of the electric automobile 5 and battery management system setting parameters of the storable device 5.
The power curve calculation module 321 of the electric energy state corresponding to the charging pile in the figure is configured to calculate the power curve of the electric energy state corresponding to the charging pile according to the characteristic parameters of the standard function of the charging and discharging strategy set by the communication control device 2 and the battery power acquired from the energy-storable device 5.
The electric power carbon emission signal recording and calculating module 322 in the figure is used for calculating the target electric power state power according to the electric power state power curve corresponding to the charging pile output by the instruction function calculating module, the target electric power carbon emission coefficient obtained from the power grid, and the rated charging power and the rated discharging power of the direct current charging and discharging device 3. The electric carbon emission coefficient is an amount of carbon emission coefficient corresponding to a unit of electricity consumption, more specifically, the unit thereof may be kgCO 2 /kWh。
The clipping module 323 in the figure is configured to clip the command target electric energy state power according to the allowable rated maximum charging power and the allowable rated maximum discharging power of the battery management system of the energy storage device 5.
The PWM wave modulation module 324 is configured to perform pulse width modulation on the limited signal to obtain a PWM wave input of the dc-dc converter 31, so that the dc-dc converter 31 controls the energy storage device 5 to charge or discharge according to the obtained PWM wave input. If the energy storable device 5 cannot give the device allowed rated maximum state of charge power and the device allowed rated maximum state of discharge power, the control circuit 32 does not set the clipping module 323. If the energy storage device 5 cannot give the battery power SOC or transmit the battery power SOC to the control circuit 32, the input battery power SOC required for calculating the command target power state power is set to be constant, for example, 50% according to the actual application scenario.
According to the above-mentioned calculation modules, the charging pile in the above-mentioned steps includes a dc bus 1, a communication control device 2 and a dc charging and discharging device 3, in which the dc charging and discharging device 3 includes a dc-dc converter 31 and a control circuit 32, and the dc charging and discharging device 3 can use a bidirectional charging pile. A first output of the communication control means 2 is connected to a first input of the control circuit 32. A first output of the power grid is connected to a third input of the control circuit 32; the second output end of the power grid is connected with the input end of the direct current bus 1. The output end of the direct current bus 1 is connected with the first input end of the direct current-direct current converter 31, the second input end of the direct current-direct current converter 31 is connected with the output end of the control circuit 32, the third input end of the direct current-direct current converter 31 is connected with the first output end of the energy storage device 5, the second output end of the energy storage device 5 is connected with the second input end and the fourth input end of the control circuit 32, and the second output end of the direct current-direct current converter 31 is connected with the input end of the energy storage device 5. The dc-dc converter 31 is configured to obtain the voltage of the dc bus 1 and the battery parameter of the energy-storable device 5, and to control the charging or discharging of the energy-storable device 5 according to the PWM wave generated by the control circuit 32 in a constant power control mode. The control circuit 32 is configured to determine the command target electric energy state power and generate the PWM wave by calculating the above modules according to the parameters set by the communication control device 1, the target electric power carbon emission coefficient of the power grid, the battery parameters of the energy storage device 5, and the battery management system setting parameters of the storable device 5.
According to the control instruction in the step S4, the above steps are performed, and fig. 4 is a schematic diagram of an instruction charge/discharge power function in the case where the battery of the electric vehicle is chargeable and dischargeable in the method according to the embodiment of the present invention, and the steps described above are described in detail below:
two-way charging piles which consider that different electric vehicles are connected into different target electric energy state characteristic parameters are all adopted by historical electric power carbon emission coefficients (0 kgCO 2 /kWh to 20kg CO 2 Change between/kWh).
When k=0, the change of the charge/discharge power of the electric vehicle battery with the target electric power carbon emission coefficient is not affected by the battery power SOC, when the target electric power carbon emission coefficient is lower than the historical electric power minimum value carbon emission coefficient C min When the charging pile is used for charging, the rated charging power of the charging pile or the rated maximum electric energy state power of the electric automobile is adopted for charging, C is the same as that of the charging pile min ＝0.2kgCO 2 Per kWh, the maximum charging power is 6.6kW; when the target electric power carbon emission coefficient is atC min And C mean When delta C is between delta C, the battery of the electric automobile is charged, and the charging power is linearly decreased along with the increase of the carbon emission coefficient of the target electric power; when the target electric power carbon emission coefficient is at C mean +ΔC and C mean -stopping charging or discharging when delta C is between, wherein the charging and discharging power is 0; when the target electric power carbon emission coefficient is at C max And C mean When +delta C is between, the battery of the electric automobile discharges, and the absolute value of the discharge power linearly increases along with the carbon emission coefficient of the target electric power; when the target electric power carbon emission coefficient is higher than the historical electric power maximum carbon emission coefficient C max When the charging pile is used for rated discharge power or the minimum value in the maximum allowable discharge power of the electric automobile is used for discharging, C is max ＝1.8kgCO 2 The maximum discharge power was-6.6 kW.
When k=0.5, the change of the charge/discharge power of the electric vehicle battery with the target electric power carbon emission coefficient is affected by the battery charge amount SOC, when the target electric power carbon emission coefficient is lower than the historical electric power minimum value carbon emission coefficient C min When the charging pile is used for charging, the rated charging power of the charging pile or the rated maximum electric energy state power of the electric automobile is adopted for charging, C is the same as that of the charging pile min ＝0.2kgCO 2 Per kWh, the maximum charging power is 6.6kW; when the target electric power carbon emission coefficient is at C min And C mean When delta C is between delta C, the battery of the electric automobile is charged, the charging power is in nonlinear decrease along with the carbon emission coefficient of the target electric power, and the decrease speed is higher as the battery electric quantity SOC is larger; when the target electric power carbon emission coefficient is at C mean +ΔC and C mean -stopping charging or discharging when delta C is between, wherein the charging and discharging power is 0; when the target electric power carbon emission coefficient is at C max And C mean When +delta C is between, the battery of the electric automobile discharges, the absolute value of the discharge power increases with the carbon emission coefficient of the target electric power in a nonlinear way, and the larger the battery electric quantity SOC is, the faster the increasing speed is; when the target electric power carbon emission coefficient is higher than the historical electric power maximum carbon emission coefficient C max When the charging pile rated discharge power or the rated maximum electric energy state power of the electric automobile is adopted for discharging, C is that max ＝1.8kgCO 2 The maximum discharge power was-6.6 kW.
When k=1, the change of the charge/discharge power of the electric vehicle battery with the target electric power carbon emission coefficient is more affected by the battery charge amount SOC, when the target electric power carbon emission coefficient is lower than the historical electric power minimum value carbon emission coefficient C min When the charging pile is used for charging, the rated charging power of the charging pile or the rated maximum electric energy state power of the electric automobile is adopted for charging, C is the same as that of the charging pile min ＝0.2kgCO 2 Per kWh, the maximum charging power is 6.6kW; when the target electric power carbon emission coefficient is at C min And C mean When +delta C is between, the battery of the electric automobile is charged, the charging power is in nonlinear decrease along with the carbon emission coefficient of the target electric power, and the decrease speed is higher as the battery electric quantity SOC is larger; when the target electric power carbon emission coefficient is at C mean +ΔC and C mean -stopping charging or discharging when delta C is between, wherein the charging and discharging power is 0; when the target electric power carbon emission coefficient is at C max And C mean When +delta C is between, the battery of the electric automobile discharges, the absolute value of the discharge power increases with the carbon emission coefficient of the target electric power in a nonlinear way, and the larger the battery electric quantity SOC is, the faster the increasing speed is; when the target electric power carbon emission coefficient is higher than the historical electric power maximum carbon emission coefficient C max When the charging pile rated discharge power or the rated maximum electric energy state power of the electric automobile is adopted for discharging, C is that max ＝1.8kgCO 2 The maximum discharge power was-6.6 kW.
By the alternative embodiments, at least the following advantages can be achieved:
(1) Because the electric energy state power curve corresponding to the target charging pile is determined by the electric quantity of the target battery and the characteristic parameters of the target electric energy state, namely, the charging and discharging rate can be controlled through the determined electric energy state power curve, and the charging and discharging process is ensured to be normally carried out within the bearable range of the battery of the electric automobile.
(2) Because the target electric energy state power corresponding to the charging pile is calculated according to the relative relation between the target electric power carbon emission coefficient and the historical electric power carbon emission coefficient, namely, according to the relative relation, the target electric energy state power can be reasonably adjusted, which is equivalent to increasing the charging power of the charging pile in a time period with a lower target electric power carbon emission coefficient, thereby meeting the charging requirement of the electric automobile, and in addition, the charging power of the charging pile can be reduced in a time period with a high target electric power carbon emission coefficient, so that the carbon emission can be effectively reduced to a certain extent.
It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.
From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising several requests for a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the method of the embodiments of the present invention.
Example 2
According to an embodiment of the present invention, there is further provided an apparatus for implementing the method for adjusting charge and discharge power of a charging pile, and fig. 5 is a block diagram of a device for adjusting charge and discharge power of a charging pile according to an embodiment of the present invention, as shown in fig. 2, where the device includes: the device is described in detail below as a receiving module 502, an obtaining module 504, a first determining module 506, a second determining module 508 and a transmitting module 510.
A receiving module 502, configured to receive a target power state control request, where the target power state control request includes a charge state control request and a discharge state control request;
the obtaining module 504, coupled to the receiving module 502, is configured to obtain, in response to a target power state control request, a power carbon emission coefficient variation amount, a historical power carbon emission coefficient, a target power carbon emission coefficient in a predetermined power grid, a target power state control feature parameter corresponding to a target charging pile, and a target battery power corresponding to a target electric automobile, where the target electric automobile is connected to the target charging pile, the historical power carbon emission coefficient includes a plurality of power carbon emission coefficients within a predetermined time period obtained from the predetermined power grid, and the target power carbon emission coefficient is a power carbon emission coefficient corresponding to a predetermined time obtained from the predetermined power grid;
The first determining module 506 is connected to the acquiring module 504, and is configured to determine an electric energy state power curve corresponding to the target charging pile according to the target electric energy state characteristic parameter and the target battery power;
the second determining module 508 is connected to the first determining module 506, and is configured to determine a target electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power carbon emission coefficient, and the target electric power carbon emission coefficient;
the sending module 510 is connected to the second determining module 508, and is configured to send a target electric energy state control instruction to the target charging pile, so that the target charging pile is controlled to charge the target electric vehicle with the target electric energy state power when the target electric energy state control request is a charging state control request, and to receive the electric quantity released by the target electric vehicle with the target electric energy state power when the target electric energy state control request is a discharging state control request.
Here, the receiving module 502, the obtaining module 504, the first determining module 506, the second determining module 508, and the sending module 510 correspond to steps S102 to S110 in the charge-discharge power adjustment method for implementing the charging pile, and the plurality of modules are the same as examples and application scenarios implemented by the corresponding steps, but are not limited to those disclosed in the foregoing embodiment 1.
Example 3
According to another aspect of the embodiment of the present invention, there is also provided an electronic device including: a processor; a memory for storing processor executable requests, wherein the processor is configured to execute the requests to implement the charge-discharge power adjustment method of the charging stake of any one of the above.
Example 4
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, which when a request in the computer-readable storage medium is executed by a processor of an electronic device, enables the electronic device to perform the charge-discharge power adjustment method of the charging pile of any one of the above.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or partly in the form of a software product or all or part of the technical solution, which is stored in a storage medium, comprising several requests for a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The charging and discharging power adjusting method for the charging pile is characterized by comprising the following steps of:
receiving a target electric energy state control request, wherein the target electric energy state control request comprises a charging state control request and a discharging state control request;
the method comprises the steps of responding to a target electric energy state control request, obtaining a change amount of an electric power carbon emission coefficient, a historical electric power carbon emission coefficient, a target electric power carbon emission coefficient in a preset power grid, a target electric energy state control characteristic parameter corresponding to a target charging pile and a target battery electric quantity corresponding to a target electric automobile, wherein the target electric automobile is connected with the target charging pile, the historical electric power carbon emission coefficient comprises a plurality of electric power carbon emission coefficients in a preset time length obtained from the preset power grid, and the target electric power carbon emission coefficient is an electric power carbon emission coefficient corresponding to a preset moment obtained from the preset power grid;
Determining an electric energy state power curve corresponding to the target charging pile according to the target electric energy state characteristic parameters and the target battery electric quantity;
determining a target electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power carbon emission coefficient and the target electric power carbon emission coefficient;
and sending a target electric energy state control instruction to the target charging pile so as to control the target charging pile to charge the target electric automobile with the target electric energy state power under the condition that the target electric energy state control request is the charging state control request, and controlling the target charging pile to receive the electric quantity released by the target electric automobile with the target electric energy state power under the condition that the target electric energy state control request is the discharging state control request.
2. The method of claim 1, wherein determining the target power state for the target charging pile based on the power state power curve, the change in the power carbon emission coefficient, the historical power carbon emission coefficient, and the target power carbon emission coefficient comprises:
Obtaining rated maximum electric energy state power of the target electric automobile and rated electric energy state power of the target charging pile;
determining initial electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power carbon emission coefficient and the target electric power carbon emission coefficient;
and determining the minimum electric energy state power from the rated maximum electric energy state power, the rated electric energy state power and the initial electric energy state power, and taking the minimum electric energy state power as the target electric energy state power corresponding to the target charging pile.
3. The method of claim 2, wherein determining the initial power state corresponding to the target charging pile based on the power state power curve, the change in the power carbon emission coefficient, the historical power carbon emission coefficient, and the target power carbon emission coefficient comprises:
determining a historical average value electric power carbon emission coefficient, a historical electric power maximum value carbon emission coefficient and a historical electric power minimum value carbon emission coefficient according to the historical electric power carbon emission coefficient;
And determining initial electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power average value carbon emission coefficient, the historical electric power maximum value carbon emission coefficient, the historical electric power minimum value carbon emission coefficient and the target electric power carbon emission coefficient.
4. The method of claim 3, wherein determining the initial power state corresponding to the target charging pile based on the power state power curve, the power carbon emission coefficient variation, the historical power average carbon emission coefficient, the historical power maximum carbon emission coefficient and the historical power minimum carbon emission coefficient, and the target power carbon emission coefficient comprises at least one of:
under the condition that the target electric power carbon emission coefficient is larger than or equal to the historical electric power maximum carbon emission coefficient, determining that the rated maximum electric energy state power is the initial electric energy state power corresponding to the target charging pile;
determining a first electric energy state power as an initial electric energy state power corresponding to the target charging pile under the condition that the target electric power carbon emission coefficient is smaller than the historical electric power maximum carbon emission coefficient and is larger than or equal to the sum of the historical electric power average carbon emission coefficient and the electric power carbon emission coefficient variation, wherein the first electric energy state power is determined according to the rated maximum electric energy state power, the electric power carbon emission coefficient variation, the historical electric power average carbon emission coefficient, the historical electric power maximum carbon emission coefficient, the electric energy state power curve and the target electric power carbon emission coefficient;
Determining a predetermined value as an initial electric energy state power corresponding to the target charging pile under the condition that the target electric power carbon emission coefficient is smaller than the sum of the coefficients and is larger than or equal to the difference between the historical electric power average value carbon emission coefficient and the electric power carbon emission coefficient variation;
determining a second electric energy state power as an initial electric energy state power corresponding to the target charging pile under the condition that the target electric power carbon emission coefficient is smaller than the coefficient difference and larger than or equal to the historical electric power minimum value carbon emission coefficient, wherein the second electric energy state power is determined according to the rated electric energy state power, the electric power carbon emission coefficient variation, the historical electric power average value carbon emission coefficient, the historical electric power minimum value carbon emission coefficient, the electric energy state power curve and the target electric power carbon emission coefficient;
and under the condition that the target electric power carbon emission coefficient is smaller than the historical electric power minimum value carbon emission coefficient, determining the rated electric energy state power as the initial electric energy state power corresponding to the target charging pile.
5. The method of claim 4, wherein determining the initial power state corresponding to the target charging pile based on the power state power curve, the power carbon emission coefficient variation, the historical power average carbon emission coefficient, the historical power maximum carbon emission coefficient and the historical power minimum carbon emission coefficient, and the target power carbon emission coefficient further comprises:
Determining a first difference between the historical power maximum carbon emission coefficient and the target power carbon emission coefficient, a second difference between the historical power maximum carbon emission coefficient and the historical power average carbon emission coefficient, and a third difference between the second difference and the power carbon emission coefficient variation, and determining a fourth difference between the historical power average carbon emission coefficient and the power carbon emission coefficient variation, and a fifth difference between the fourth difference and the target power carbon emission coefficient, and a sixth difference between the fourth difference and the historical power minimum carbon emission coefficient;
determining a first ratio of the first difference to the third difference and a second ratio of a fifth difference to the sixth difference;
determining a first product of the rated maximum power state power and the first proportion under a target index term, and determining a second product of the rated power state power and the second proportion under the target index term, wherein the target index term is determined according to the power state power curve;
determining a difference between the first product and the nominal maximum power state power as the first power state power and determining the second product as the second power state power.
6. The method of claim 1, wherein after the sending the target power state control command to the target charging stake, further comprising:
determining a target carbon emission amount generated after the target charging pile executes the target electric energy state control instruction;
comparing the target carbon emission with a preset carbon emission to obtain a comparison result;
and sending alarm information to a preset terminal under the condition that the target carbon emission is larger than the preset carbon emission as a result of the comparison.
7. The method according to any one of claims 1 to 6, wherein determining the power curve of the electric energy state corresponding to the target charging pile according to the target electric energy state characteristic parameter and the target battery power comprises:
determining a seventh difference between a predetermined coefficient and the target power state characteristic parameter, an eighth difference between the predetermined coefficient and the target battery power, and a product of the target power state characteristic parameter and the target battery power;
determining a third ratio of the product to the eighth difference;
determining a sum of the seventh difference and the third ratio;
and determining an electric energy state power curve corresponding to the target charging pile according to the sum.
8. A charging pile charging and discharging power adjusting device, comprising:
the receiving module is used for receiving a target electric energy state control request, wherein the target electric energy state control request comprises a charging state control request and a discharging state control request;
the acquisition module is used for responding to the target electric energy state control request, acquiring the electric power carbon emission coefficient variation quantity, the historical electric power carbon emission coefficient, the target electric power carbon emission coefficient in a preset power grid, target electric energy state control characteristic parameters corresponding to a target charging pile and target battery electric quantity corresponding to a target electric automobile, wherein the target electric automobile is connected with the target charging pile, the historical electric power carbon emission coefficient comprises a plurality of electric power carbon emission coefficients in a preset time acquired from the preset power grid, and the target electric power carbon emission coefficient is an electric power carbon emission coefficient corresponding to a preset moment acquired from the preset power grid;
the first determining module is used for determining an electric energy state power curve corresponding to the target charging pile according to the target electric energy state characteristic parameter and the target battery electric quantity;
the second determining module is used for determining target electric energy state power corresponding to the target charging pile according to the electric energy state power curve, the electric power carbon emission coefficient variation, the historical electric power carbon emission coefficient and the target electric power carbon emission coefficient;
And the sending module is used for sending a target electric energy state control instruction to the target charging pile so as to control the target charging pile to charge the target electric automobile with the target electric energy state power under the condition that the target electric energy state control request is the charging state control request, and controlling the target charging pile to receive the electric quantity released by the target electric automobile with the target electric energy state power under the condition that the target electric energy state control request is the discharging state control request.
9. An electronic device, comprising:
a processor;
a memory for storing the processor-executable request;
wherein the processor is configured to execute the request to implement the charging and discharging power adjustment method of the charging pile according to any one of claims 1 to 7.
10. A computer readable storage medium, characterized in that a request in the computer readable storage medium, when executed by a processor of an electronic device, enables the electronic device to perform the charging and discharging power adjustment method of a charging pile according to any one of claims 1 to 7.
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| CN202311270614.7A CN117301933A (en) | 2023-09-27 | 2023-09-27 | Charging pile charging and discharging power adjusting method and device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311270614.7A CN117301933A (en) | 2023-09-27 | 2023-09-27 | Charging pile charging and discharging power adjusting method and device and electronic equipment |
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| CN202311270614.7A Pending CN117301933A (en) | 2023-09-27 | 2023-09-27 | Charging pile charging and discharging power adjusting method and device and electronic equipment |
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| CN (1) | CN117301933A (en) |
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