CN110682823A - Charging control method and system for electric automobile - Google Patents

Charging control method and system for electric automobile Download PDF

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Publication number
CN110682823A
CN110682823A CN201810732088.4A CN201810732088A CN110682823A CN 110682823 A CN110682823 A CN 110682823A CN 201810732088 A CN201810732088 A CN 201810732088A CN 110682823 A CN110682823 A CN 110682823A
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charging
load
target
information
user
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邬超慧
付媛
张春慧
闫志海
张晓妍
聂建春
李孝林
张利峰
姜维
邢炜
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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
    • 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
    • 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
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

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Abstract

The invention discloses a charging control method and a charging control system for an electric automobile, wherein the method comprises the following steps: acquiring a target charging capacity, wherein the target charging capacity is associated with environment information and charging user number information; acquiring a charging load and a residential electricity load at preset time intervals; judging whether the sum of the charging load and the residential electricity load is less than or equal to the rated output power of the transformer or not; if the sum of the charging load and the residential electricity load is less than or equal to the rated power output by the transformer, determining a target charging load according to the actual charging demand load and the charging load; and charging the electric automobile to the target charging capacity according to the target charging load. According to the method and the system, the active power output control of the charging pile is adopted, the peak staggering regulation of the charging power consumption and the residential power consumption is realized, and the spare capacity is used for charging the electric automobile under the condition that no transformer is added, so that the transformer is not overloaded.

Description

Charging control method and system for electric automobile
The technical field is as follows:
the invention relates to the technical field of intelligent charging of electric automobiles, in particular to a charging control method and system of an electric automobile.
Background art:
the electric automobile industry is vigorously developed in China at present, the primary task for developing electric automobiles is to develop charging facilities, and with the maturity of power battery technology and the further reduction of price, the electric automobile industry in China will be developed in a large step in the future. The development of the electric automobile industry is mainly tasked with developing charging facilities, and for common residents, the most convenient charging mode is to directly charge at a fixed parking space in a community.
However, in the process of implementing the invention, the inventor finds that, for the existing residential area, if the ac charging piles are configured according to the parking spaces 1:1, considering that the power of each ac charging pile is 3-7 kW, the newly increased power load is very large, and the existing residential area distribution transformer cannot meet the requirement of the newly increased load. If a power supply transformer is additionally arranged, the occupied area investment of a cell and the investment of a power distribution network need to be considered, but the problem that the transformation cannot be carried out can be caused because some cells do not have the occupied area of the newly-arranged transformer or the power distribution network does not have available loads or loops, and at the moment, if charging facilities are built on a large scale, the risk of overload of the transformer is necessarily caused.
The invention content is as follows:
the present invention is directed to a method and a system for controlling charging of an electric vehicle, so as to solve the problems in the prior art.
The invention is implemented by the following technical scheme:
the embodiment of the invention provides a charging control method for an electric automobile, which comprises the following steps:
acquiring a target charging capacity, wherein the target charging capacity is associated with environment information and charging user number information; acquiring a charging load and a residential electricity load at preset time intervals; judging whether the sum of the charging load and the residential electricity load is less than or equal to the rated output power of the transformer or not; if the sum of the charging load and the charging load is less than or equal to the rated power output by the transformer, determining a target charging load according to the actual charging demand load and the residential electricity load; and charging the electric automobile to the target charging capacity according to the target charging load.
Further, before the obtaining the target charging capacity, the method further includes: receiving a charging instruction of a user, and acquiring first electricity price information, the environment information and the charging user quantity information; adjusting the first electricity price information according to the environment information and the charging user quantity information, and displaying the adjusted second electricity price information to the user; determining a target charging capacity in response to the user's selection instruction.
Further, the adjusting the first electricity price information according to the environment information and the charging user quantity information includes: determining the current electricity price time period according to the environment information; if the charging user is in the electricity price trough time period, reducing the first electricity price information according to the charging user number information and a preset electricity price lever adjusting curve; and if the current price is in the peak time period of the current price, improving the first current price information according to the charging user quantity information and a preset current price lever adjusting curve.
Further, the determining a target charging load according to the actual charging demand load and the charging load includes: comparing the magnitude of the charging actual demand load with the magnitude of the charging load; if the actual charging demand load is larger than the charging load, increasing the charging load to obtain the target charging load; and if the actual charging demand load is equal to the charging load, taking the charging load as the target charging load.
Further, the method further comprises: and if the sum of the charging load and the residential electricity load is greater than the rated power output by the transformer, reducing the charging load to obtain the target charging load.
The embodiment of the invention also provides an electric vehicle charging control system, which comprises:
the charging system comprises a first acquisition module, a second acquisition module and a charging management module, wherein the first acquisition module is used for acquiring a target charging capacity, and the target charging capacity is associated with environment information and charging user number information; the second acquisition module is used for acquiring the charging load and the residential electricity load at preset time intervals; the judging module is used for judging whether the sum of the charging load and the residential electricity load is less than or equal to the rated power output by the transformer or not; the first determination module is used for determining a target charging load according to the actual charging demand load and the residential electricity load if the sum of the charging load and the charging load is less than or equal to the rated power output by the transformer; and the charging module is used for charging the electric automobile to the target charging capacity according to the target charging load.
Further, the system further comprises: the receiving module is used for receiving a charging instruction of a user and acquiring first electricity price information, the environment information and the charging user quantity information; the adjusting module is used for adjusting the first electricity price information according to the environment information and the charging user quantity information and displaying the adjusted second electricity price information to the user; and the second determination module is used for responding to the selection instruction of the user and determining the target charging capacity.
Further, the adjusting module is specifically configured to determine a current electricity price period according to the environment information; if the charging user is in the electricity price trough time period, reducing the first electricity price information according to the charging user number information and a preset electricity price lever adjusting curve; and if the current price is in the peak time period of the current price, improving the first current price information according to the charging user quantity information and a preset current price lever adjusting curve.
Further, the first determining module is specifically configured to compare the actual charging demand load with the magnitude of the charging load; if the actual charging demand load is larger than the charging load, increasing the charging load to obtain the target charging load; and if the actual charging demand load is equal to the charging load, taking the charging load as the target charging load.
Further, the system further comprises: and the reducing module is used for reducing the charging load to obtain the target charging load if the sum of the charging load and the residential electricity load is greater than the rated power output by the transformer.
The invention has the advantages that:
according to the electric vehicle charging control method and system provided by the embodiment of the invention, the active power output of the charging pile is controlled, so that the peak shifting regulation of charging power consumption and resident power consumption is realized; by monitoring the power of the transformer in the community in real time, the electric automobile is charged by using the spare capacity under the condition that the transformer is not newly added, and the transformer is ensured not to be overloaded.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a charging control method for an electric vehicle according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating an embodiment of a charging control method for an electric vehicle according to the present invention;
fig. 3 is a flowchart illustrating an embodiment of a charging control method for an electric vehicle according to the present invention;
fig. 4 is a schematic structural diagram of an electric vehicle charging control system according to an embodiment of the present invention;
fig. 5 is a structural diagram of an output power adjustable ac charging pile with an electric vehicle charging control system according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electric vehicle charging control system according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electric vehicle charging control system according to an embodiment of the present invention;
the specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
First, terms related to embodiments of the present invention are explained as follows:
electric automobile alternating-current charging stake: the method comprises the following steps of providing an alternating current power supply for a vehicle-mounted charger, and charging a vehicle storage battery by the vehicle-mounted charger, wherein the charging power is low, and the charging time is long; the output capacity of the ac charging post is determined by the vehicle-mounted charger. The power supply power of the alternating current charging pile is generally 3-7 kW, and the charging time is about 7-10 hours after the alternating current charging pile is completely charged.
Charging a direct current: and outputting a direct current power supply to directly charge the storage battery of the electric automobile. The power supply power is larger and is generally 30-100 kW, and the fully charged charging time is about 0.5-2 hours. Current electric automobile charging control system only manages filling electric pile, does not fill electric pile and carries out active control, can't realize charging power consumption and resident's power consumption regulation and control of staggering peak. The reasonable utilization of the surplus capacity of the existing community power supply transformer cannot be realized.
The technical scheme of the embodiment of the invention is described in detail as follows:
fig. 1 is a flowchart of an electric vehicle charging control method according to an embodiment of the present invention. As shown in fig. 1, a method for controlling charging of an electric vehicle according to an embodiment of the present invention includes:
s101, acquiring a target charging capacity, wherein the target charging capacity is associated with environment information and charging user number information.
Generally speaking, the power of alternating current charging pile is 3 ~ 7kW, and this load is exactly close to the design power consumption load of each household resident. The peak time of electricity consumption of residents is mostly concentrated at 18:00 evening to 7:00 morning of the next day, the peak time of charging of electric vehicles is concentrated in the time period, and in the time period of 18: 00-23: 00, the peak time is the time period of overlapping of the peak time of electricity consumption, and the time period of the highest overload probability of residential electricity consumption transformers in a community. According to the residential electricity load curve and the charging pile service condition curve, the output power of the charging pile is actively controlled, the peak staggering of charging electricity and residential electricity can be realized, the overload of residential electricity transformers in a community is avoided, and the electric automobile is charged to the maximum extent by utilizing the spare time of 23: 00-7: 00 days.
When the user charges the electric automobile in the peak period of electricity utilization of residents, the electricity price can be adjusted according to the preset model and by considering the number of charging users of the charging pile of the current community, and on the premise of maintaining the total price of power supply unchanged, the individual electricity price of each user is adjusted up and down through the preset electricity price lever adjusting curve, so that the user can determine the charging capacity of the user according to the individual electricity price and the condition of the user, and the purpose of load regulation and control is actively responded. Therefore, the residents can select the charging capacity according to the adjusted electricity price, namely when the electricity price is too high, the residents can only charge to the target charging capacity meeting the next day trip requirement of the residents, and the peak load shifting of the charging electricity and the resident electricity is realized.
Specifically, as shown in fig. 2, before the above steps are performed, the embodiment of the present invention further includes the following steps:
s201, receiving a charging instruction of a user, and acquiring first electricity price information, environment information and charging user quantity information.
Specifically, the first power rate information may be a time-of-use power rate of a current time period, and the environment information may be current time information by which a current power rate time period can be determined.
S202, adjusting the first electricity price information according to the environment information and the charging user quantity information, and displaying the adjusted second electricity price information to the user.
And S203, responding to the selection instruction of the user, and determining the target charging capacity.
Specifically, the user electricity consumption data of the number of charging users and the electricity consumption peak-trough time period can be collected in advance, an electricity price lever adjusting curve is set according to the data, the abscissa of the curve is the number of charging users in each electricity consumption time period, and the ordinate is first electricity price information.
Specifically, the current electricity price period is determined according to the environment information; if the charging user is in the electricity price trough time period, reducing the first electricity price information according to the charging user number information and a preset electricity price lever adjusting curve; and if the current price is in the peak time period of the current price, improving the first current price information according to the charging user quantity information and a preset current price lever adjusting curve. That is, if the current peak time is in the peak time period, the charging capacity of the user can be controlled by increasing the electricity price, and optionally, the increased electricity price amplitude can be specifically limited by the current charging user number information; if the current time is in the valley period, the user can be encouraged to be fully charged or the charging power can be increased by reducing the electricity price, and optionally, the reduced electricity price amplitude can be specifically limited by the number of the current charging users. It should be noted that the lever price of electricity needs to be kept consistent with the original total price of electricity.
The adjusted second electricity price information is displayed to the user, and meanwhile, the user can also charge to price lists corresponding to different capacities and mileage capable of driving, so that the user can select the corresponding target charging capacity according to the actual situation of the user without charging to the capacity of 100%.
And S102, acquiring the charging load and the residential electricity load at preset time intervals.
In this step, the residential electricity load (i.e. the current residential electricity consumption power) can be obtained by monitoring the electricity consumption of the transformer in real time, and correspondingly, the charging load of the electric vehicle being charged (i.e. the current charging power of the electric vehicle) can be obtained in real time. In addition, the residential electricity load and the charging load can be acquired once every preset time. The preset time can be set by a person skilled in the art according to actual needs, and the invention is not limited herein.
And S103, judging whether the sum of the charging load and the residential electricity load is less than or equal to the output rated power of the transformer.
Specifically, let PBFor outputting rated power, P, to the transformerJFor the resident electrical load, PCFor charging the load, if PJ+PC≤PBThen step S103 is executed.
And if the sum of the charging load and the residential electricity load is greater than the rated power output by the transformer, reducing the charging load to obtain a target charging load. Specifically, if PJ+PC>PBIt is explained that the current power supply capacity of the residential transformer is smaller than the charging demand, and the charging power output of the charging pile needs to be controlled to be reduced, so that the current charging load is reduced.
And S104, determining a target charging load according to the actual charging demand load and the charging load.
Specifically, the charging actual demand load is a target charging power determined according to a target charging capacity, a charging period, and the like selected or input by a user when charging the electric vehicle. In this step, let PCXAnd comparing the sizes of the actual charging demand load and the charging load for charging the actual demand load, and determining a target charging load according to the size relation between the actual charging demand load and the charging load, namely whether the current charging power is adjusted or not.
When P is presentCX>PCThe electricity load indicating the actual demand of the user is higher than the current charging load, and the current residentsThe transformer has surplus power supply capacity, and the surplus capacity of the resident power utilization transformer is used for charging the charging automobile, so that overload tripping of the transformer is avoided. Therefore, the current charging power can be increased, namely the current charging load is increased to obtain the target charging load, so that the aim of fully utilizing the surplus power supply capacity is fulfilled; when P is presentCX＝PCIn this case, the current charging power may be maintained if the power consumption load actually required by the user matches the current charging load, and thus the current charging load may be set as the target charging load.
And S105, charging the electric automobile to the target charging capacity according to the target charging load.
Specifically, during the charging process according to the target charging load determined in step S103, since the charging load and the residential electricity load are constantly changed in real time, that is, the surplus capacity of the transformer is changed in real time, the output power of the charging pile is required to be changed in real time. Therefore, the steps S101 to S103 can be repeated, so that the charging load can be actively controlled according to the electricity consumption of the residents, and the electric vehicle can be charged under the condition that the resident transformer is not overloaded.
Optionally, when the electric vehicle is charged, the charging pile has multiple charging mode selections, and a user can select different charging control modes to meet various requirements of residents in a community. Specifically, the charging control mode includes, but is not limited to, a control mode, a peak-to-valley electricity rate mode, a priority mode, a charge-discharge mode, and the like. When the control mode is selected, the control of the charging power is performed through the steps S101 to S104, and at this time, the user can also input the charging amount by self-definition; when the peak-valley electricity price mode is selected, charging is started in the valley electricity price period by monitoring the electricity utilization load in real time until the electric quantity of the vehicle is full; when the priority mode is selected, the emergency of the charging vehicle exists for the user, and the charging power is not controlled by selecting to charge without considering the power price problem; when the charging and discharging mode is selected, discharging is carried out in the power grid during the peak period of power utilization, and the charging mode is entered when the trough of power utilization.
According to the electric vehicle charging control method provided by the embodiment of the invention, the active power output of the charging pile is controlled, so that the peak shifting regulation of charging power consumption and resident power consumption is realized; by monitoring the power of the transformer in the community in real time, the electric automobile is charged by using the spare capacity under the condition that the transformer is not newly added, and the transformer is ensured not to be overloaded.
Fig. 3 is a flowchart of an electric vehicle charging control method according to an embodiment of the present invention. As shown in fig. 3, this embodiment is a specific implementation scheme of the embodiment shown in fig. 1 and fig. 2, and therefore detailed implementation methods and beneficial effects of each step in the embodiment shown in fig. 1 and fig. 2 are not described again, and the electric vehicle charging control method provided in the embodiment of the present invention includes:
s301, acquiring a target charging capacity, wherein the target charging capacity is associated with environment information and charging user number information.
And S302, acquiring the charging load and the residential electricity load at preset time intervals.
And S303, judging whether the sum of the charging load and the residential electricity load is less than or equal to the output rated power of the transformer.
Specifically, when the sum of the charging load and the residential electricity load is less than or equal to the rated power output of the transformer, the steps S304 to S306 are executed; when the sum of the charging load and the residential electricity load is greater than the transformer output rated power, step S307 is executed.
And S304, comparing the actual charging demand load with the charging load.
S305, if the actual charging demand load is larger than the charging load, increasing the charging load to obtain a target charging load.
And S306, if the actual charging demand load is equal to the residential electricity load, taking the charging load as a target charging load.
And S307, reducing the charging load to obtain a target charging load.
And S308, charging the electric automobile to the target charging capacity according to the target charging load.
According to the electric vehicle charging control method provided by the embodiment of the invention, the active power output of the charging pile is controlled, so that the peak shifting regulation of charging power consumption and resident power consumption is realized; by monitoring the power of the transformer in the community in real time, the electric automobile is charged by using the spare capacity under the condition that the transformer is not newly added, and the transformer is ensured not to be overloaded.
Fig. 4 is a schematic structural diagram of an electric vehicle charging control system according to an embodiment of the present invention,
fig. 5 is a structural diagram of an output power adjustable ac charging pile with an electric vehicle charging control system according to an embodiment of the present invention. As shown in fig. 4, the system specifically includes: a first obtaining module 410, a second obtaining module 420, a judging module 430, a first determining module 440 and a charging module 450. Wherein,
a first obtaining module 410, configured to obtain a target charging capacity, where the target charging capacity is associated with environment information and charging user number information; a second obtaining module 420, configured to obtain the charging load and the residential electricity load at preset time intervals; the judging module 430 is used for judging whether the sum of the charging load and the residential electricity load is less than or equal to the rated output power of the transformer; a first determining module 440, configured to determine a target charging load according to an actual charging demand load and the charging load if a sum of the charging load and the residential electricity load is less than or equal to the rated power output by the transformer; the charging module 450 is configured to charge the electric vehicle to the target charging capacity according to the target charging load.
Optionally, as shown in fig. 6, the system further includes: a receiving module 610, an adjusting module 620, and a second determining module 630. Wherein,
the receiving module 610 is configured to receive a charging instruction of a user, and acquire first electricity price information, environment information, and charging user quantity information; the adjusting module 620 is configured to adjust the first electricity price information according to the environment information and the charging user quantity information, and display the adjusted second electricity price information to the user; a second determining module 630, configured to determine a target charging capacity in response to the selection instruction of the user.
Optionally, the adjusting module 620 is specifically configured to determine the current electricity price period according to the environment information; if the charging user is in the electricity price trough time period, reducing the first electricity price information according to the charging user number information and a preset electricity price lever adjusting curve; and if the current price is in the peak time period of the current price, improving the first current price information according to the charging user quantity information and a preset current price lever adjusting curve.
The electric vehicle charging control provided by the embodiment of the present invention is specifically configured to execute the method provided by the embodiment shown in fig. 1 and fig. 2, and the implementation principle, the method, the function and the like of the method provided by the embodiment shown in fig. 1 and fig. 2 are similar to those of the embodiment shown in fig. 1 and fig. 2, and are not described herein again.
Fig. 7 is a schematic view of a charging control structure of an electric vehicle according to an embodiment of the present invention. As shown in fig. 7, the system specifically includes:
a first obtaining module 710, a second obtaining module 720, a determining module 730, a first determining module 740, a decreasing module 750, and a charging module 760. Wherein,
a first obtaining module 710, configured to obtain a target charging capacity, where the target charging capacity is associated with environment information and charging user number information; a second obtaining module 720, configured to obtain the charging load and the residential electricity load every preset time; the judging module 730 is used for judging whether the sum of the charging load and the residential electricity load is less than or equal to the rated output power of the transformer; a first determining module 740, configured to determine a target charging load according to an actual charging demand load and the charging load if a sum of the charging load and the residential electricity load is less than or equal to the rated power output by the transformer; a reducing module 750, configured to reduce the charging load to obtain the target charging load if a sum of the charging load and the residential electricity load is greater than a rated power output by the transformer; and a charging module 760 for charging the electric vehicle to the target charging capacity according to the target charging load.
The first determining module 740 is specifically configured to compare the magnitude of the charging actual demand load with the magnitude of the charging load; if the actual charging demand load is larger than the charging load, increasing the charging load to obtain the target charging load; and if the actual charging demand load is equal to the residential electricity load, taking the charging load as the target charging load.
The electric vehicle charging control system provided by the embodiment of the invention is specifically used for executing the method provided by the embodiment shown in fig. 3, and the implementation principle, the method, the functional application and the like of the electric vehicle charging control system are similar to those of the embodiment shown in fig. 3, and are not described again here.
The above-described embodiments are merely illustrative, and the modules described as separate components may or may not be physically separate, and the components displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it may still be said that
The technical scheme is modified, or part of technical characteristics are equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A charging control method for an electric vehicle is characterized by comprising the following steps:
acquiring a target charging capacity, wherein the target charging capacity is associated with environment information and charging user number information;
acquiring a charging load and a residential electricity load at preset time intervals;
judging whether the sum of the charging load and the residential electricity load is less than or equal to the rated output power of the transformer or not;
if the sum of the charging load and the residential electricity load is less than or equal to the rated power output by the transformer, determining a target charging load according to the actual charging demand load and the charging load;
and charging the electric automobile to the target charging capacity according to the target charging load.
2. The method of claim 1, wherein prior to obtaining the target charging capacity, the method further comprises:
receiving a charging instruction of a user, and acquiring first electricity price information, the environment information and the charging user quantity information;
adjusting the first electricity price information according to the environment information and the charging user quantity information, and displaying the adjusted second electricity price information to the user;
determining a target charging capacity in response to the user's selection instruction.
3. The method according to claim 2, wherein the adjusting the first power rate information according to the environment information and the charging user number information comprises:
determining the current electricity price time period according to the environment information;
if the charging user is in the electricity price trough time period, reducing the first electricity price information according to the charging user number information and a preset electricity price lever adjusting curve;
and if the current price is in the peak time period of the current price, improving the first current price information according to the charging user quantity information and a preset current price lever adjusting curve.
4. The method according to claims 1-3, wherein determining a target charging load according to a charging actual demand load and the charging load comprises:
comparing the magnitude of the charging actual demand load with the magnitude of the charging load;
if the actual charging demand load is larger than the charging load, increasing the charging load to obtain the target charging load;
and if the actual charging demand load is equal to the charging load, taking the charging load as the target charging load.
5. The method according to any one of claims 1-3, further comprising:
and if the sum of the charging load and the residential electricity load is greater than the rated power output by the transformer, reducing the charging load to obtain the target charging load.
6. An electric vehicle charging control system, comprising:
the charging system comprises a first acquisition module, a second acquisition module and a charging management module, wherein the first acquisition module is used for acquiring a target charging capacity, and the target charging capacity is associated with environment information and charging user number information;
the second acquisition module is used for acquiring the charging load and the residential electricity load at preset time intervals;
the judging module is used for judging whether the sum of the charging load and the residential electricity load is less than or equal to the rated power output by the transformer or not;
the first determination module is used for determining a target charging load according to the actual charging demand load and the charging load if the sum of the charging load and the residential electricity load is less than or equal to the rated power output by the transformer;
and the charging module is used for charging the electric automobile to the target charging capacity according to the target charging load.
7. The system of claim 6, further comprising:
the receiving module is used for receiving a charging instruction of a user and acquiring first electricity price information, the environment information and the charging user quantity information;
the adjusting module is used for adjusting the first electricity price information according to the environment information and the charging user quantity information and displaying the adjusted second electricity price information to the user;
and the second determination module is used for responding to the selection instruction of the user and determining the target charging capacity.
8. The system of claim 7, wherein the adjusting module is specifically configured to determine a current electricity price period according to the environment information; if the charging user is in the electricity price trough time period, reducing the first electricity price information according to the charging user number information and a preset electricity price lever adjusting curve; and if the current price is in the peak time period of the current price, improving the first current price information according to the charging user quantity information and a preset current price lever adjusting curve.
9. The system according to claims 6 to 8, wherein the first determining module is specifically configured to compare the magnitude of the charging actual demand load and the charging load; if the actual charging demand load is larger than the charging load, increasing the charging load to obtain the target charging load; and if the actual charging demand load is equal to the charging load, taking the charging load as the target charging load.
10. The system of claims 6-8, further comprising:
and the reducing module is used for reducing the charging load to obtain the target charging load if the sum of the charging load and the residential electricity load is greater than the rated power output by the transformer.
CN201810732088.4A 2018-07-05 2018-07-05 Charging control method and system for electric automobile Pending CN110682823A (en)

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