CN111071102B - Flexible charging method and device for direct-current charging pile - Google Patents

Flexible charging method and device for direct-current charging pile Download PDF

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CN111071102B
CN111071102B CN201911342421.1A CN201911342421A CN111071102B CN 111071102 B CN111071102 B CN 111071102B CN 201911342421 A CN201911342421 A CN 201911342421A CN 111071102 B CN111071102 B CN 111071102B
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charging
charge
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time
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CN111071102A (en
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张鹏飞
金正军
冯涛
宋书轩
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Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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Hangzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • 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
    • B60L53/30—Constructional details of charging stations
    • B60L53/305—Communication interfaces
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The disclosure relates to a flexible charging method and device for a direct current charging pile. The method comprises the following steps: acquiring a target charging vehicle and target charging time according to a charging request of a user; acquiring the state of charge of a battery in the target charging vehicle; determining an effective charging time and a charging rate based on a fuzzy control algorithm and the target charging time and the state of charge; and charging a target charging vehicle by the effective charging time and the charging rate. The flexible charging method and the device for the direct-current charging pile can realize the maximized satisfaction of the direct-current charging pile on the user demand, can ensure the protection of the battery in the charging process, and prolongs the service life of the electric vehicle.

Description

Flexible charging method and device for direct-current charging pile
Technical Field
The disclosure relates to the technical field of electric automobile charging, in particular to a flexible charging method and device for a direct current charging pile.
Background
Along with the rapid development of new energy automobiles in China, the design of charging equipment and charging strategies has important significance for reasonably distributing charging resources and maximally meeting the charging demands of users.
In order to meet the charging requirements of multiple electric vehicles of various types, the layout and development of the quick charging and direct current charging piles are quick, but the information interaction between the current electric vehicles is less, and the charging method does not fully consider the user requirements and the battery state, for example, the user requirements of simultaneous charging of multiple electric vehicles under the limited capacity of the direct current charging piles cannot be met, or the reasonable charging mode of the battery cannot be fully considered. In order to solve these problems, patent CN 107128199A designs a direct current charging pile charging management system with multiple scenario modes, a user can freely select a travel mode, a time-sharing lease mode, a nurse vehicle mode and other charging modes, each mode sets charging multiplying power of different time periods according to an SOC threshold value, initial charging requirements of the user are considered, but each charging mode only sets different charging multiplying power according to a fixed time node, flexibility is lacking, actual waiting time of the user is not considered, and battery management is not included in a control category; patent CN 105207302A designs a flexible charging method and a charger, which can collect BMS data of an electric vehicle in real time during charging, and control a power conversion module to an optimal charging current by comparing the BMS data with target charging data, so as to slow down battery aging and improve battery service life.
The above information disclosed in the background section is only for enhancement of understanding of the background of the disclosure and therefore it may include information that does not form the prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
In view of the above, the present disclosure provides a flexible charging method and apparatus for a dc charging pile, which can realize the maximum satisfaction of the dc charging pile to the user's demand, and can ensure the protection of the battery during the charging process, and prolong the service life of the electric vehicle.
Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure.
According to an aspect of the present disclosure, a flexible charging method for a dc charging pile is provided, the method including: acquiring a target charging vehicle and target charging time according to a charging request of a user; acquiring the state of charge of a battery in the target charging vehicle; determining an effective charging time and a charging rate based on a fuzzy control algorithm and the target charging time and the state of charge; and charging a target charging vehicle by the effective charging time and the charging rate.
In an exemplary embodiment of the present disclosure, further comprising: acquiring the current battery state of the target charging vehicle in real time in the charging process; and adjusting the charging power when the current battery state does not meet the condition.
In one exemplary embodiment of the present disclosure, obtaining, in real time, a current battery state of the target charging vehicle includes: acquiring the current charge state of the target charging vehicle in real time; and/or acquiring the current voltage state of the target charging vehicle in real time.
In one exemplary embodiment of the present disclosure, when the current battery state does not satisfy a condition, it includes: when the current state of charge exceeds a charge threshold range; and/or when the current voltage state is outside a voltage threshold range; and determining that the current battery state does not meet a condition.
In an exemplary embodiment of the present disclosure, adjusting the charging power includes: determining a changed charging time and a changed charging rate according to the target charging time and the current state of charge; and adjusting the charging power of the direct current charging pile through the changed charging time and the changed charging rate.
In one exemplary embodiment of the present disclosure, determining a modified charge time and a modified charge rate from the target charge time, the current state of charge, comprises: when the current state of charge exceeds a charge threshold range, determining the changed charge time and the changed charge rate through the charge threshold range, the target charge time and the current state of charge; and/or determining the altered charge time and the altered charge rate from a voltage threshold range and the target charge time, the current state of charge, when the current state of voltage exceeds a voltage threshold range
In one exemplary embodiment of the present disclosure, acquiring a state of charge of a battery in the target charging vehicle includes: and acquiring the charge state of the battery in the battery management system of the target charging vehicle.
In one exemplary embodiment of the present disclosure, determining an effective charge time and charge rate based on a fuzzy control algorithm and the target charge time, the state of charge, includes: reasoning the target charging time and the state of charge through a Mamdani fuzzy reasoning algorithm; and solving by a gravity center method.
According to an aspect of the present disclosure, there is provided a flexible charging device for a dc charging pile, the device comprising: the request module is used for acquiring a target charging vehicle and target charging time according to a charging request of a user; the data module is used for acquiring the charge state of the battery in the target charging vehicle; the parameter module is used for determining effective charging time and charging rate based on a fuzzy control algorithm, the target charging time and the state of charge; and a charging module for charging a target charging vehicle with the effective charging time and the charging rate.
In an exemplary embodiment of the present disclosure, further comprising: the state module is used for acquiring the current battery state of the target charging vehicle in real time in the charging process; and the adjusting module is used for adjusting the charging power when the current battery state does not meet the condition.
According to an aspect of the present disclosure, there is provided an electronic device including: one or more processors; a storage means for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the methods as described above.
According to an aspect of the present disclosure, a computer-readable medium is presented, on which a computer program is stored, which program, when being executed by a processor, implements a method as described above.
According to the flexible charging method and device of the direct current charging pile, a target charging vehicle and target charging time are obtained according to a charging request of a user; acquiring the state of charge of a battery in the target charging vehicle; determining an effective charging time and a charging rate based on a fuzzy control algorithm and the target charging time and the state of charge; and the method for charging the target charging vehicle by the effective charging time and the charging rate can realize the maximized satisfaction of the direct current charging pile on the user demand, ensure the protection of the battery in the charging process and prolong the service life of the electric vehicle.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely examples of the present disclosure and other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a flow chart illustrating a flexible charging method of a dc charging stake according to an exemplary embodiment.
Fig. 2 is a control strategy overall block diagram of a flexible charging method of a dc charging stake according to another exemplary embodiment.
Fig. 3 is a flow chart illustrating a flexible charging method of a dc charging stake according to another exemplary embodiment.
Fig. 4 is a battery SOC and voltage management control scheme diagram illustrating a flexible charging method of a dc charging stake according to another exemplary embodiment.
Fig. 5 is a block diagram of a flexible charging device for a dc charging stake, which is illustrated in accordance with an exemplary embodiment.
Fig. 6 is a block diagram of an electronic device, according to an example embodiment.
Fig. 7 is a block diagram of a computer-readable medium shown according to an example embodiment.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the disclosed aspects may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one element from another element. Accordingly, a first component discussed below could be termed a second component without departing from the teachings of the concepts of the present disclosure. As used herein, the term "and/or" includes any one of the associated listed items and all combinations of one or more.
Those skilled in the art will appreciate that the drawings are schematic representations of example embodiments and that the modules or flows in the drawings are not necessarily required to practice the present disclosure, and therefore, should not be taken to limit the scope of the present disclosure.
The method is mainly used for establishing an information sharing mechanism of the flexible charging pile and a user side and optimizing charging in a multiparty and collaborative mode. The following describes the disclosure in detail with the aid of specific examples.
Fig. 1 is a flow chart illustrating a flexible charging method of a dc charging stake according to an exemplary embodiment. The flexible charging method 10 of the direct current charging pile at least comprises steps S102 to S108.
As shown in fig. 1, in S102, a target charge vehicle and a target charge time are acquired according to a charge request of a user. Since the charge time and the battery SOC are the main influencing factors that determine the charge rate and the charge period optimization schedule, and also correspond to the critical parameters of the user demand and the battery characteristics, respectively, the battery SOC of each electric vehicle and each user desired charge time may be used as input to the controller for subsequent calculations, for example.
In S104, the state of charge of the battery in the target charge vehicle is acquired. Comprising the following steps: and acquiring the charge state of the battery from a battery management system of the target charging vehicle.
In S106, an effective charge time and a charge rate are determined based on the fuzzy control algorithm and the target charge time, the state of charge. Comprising the following steps: reasoning the target charging time and the state of charge through a Mamdani fuzzy reasoning algorithm; and solving by a gravity center method.
The charging rate Ce and the effective charging time TC of the electric vehicle can be obtained, for example, through fuzzification, fuzzy reasoning and fuzzy interpretation, and the charging mode is comprehensively considered and controlled by the user demand and the battery state.
More specifically, a fuzzy control algorithm may be designed to derive an effective charge time TC (denoted as an output variable u 1) and a charge rate Ce (denoted as an output variable u 2) for each electric vehicle based on a current state of charge (SOC) of the battery (denoted as an input variable y 1) and a charge retention time Tep (denoted as an input variable y 2) provided by the user. For a fuzzy system with two input variables, each input variable is composed of three fuzzy sets (three grades of high, medium and low, or fast, slow and the like) respectively, and is combined to form an l=9 fuzzy rule and has the following form:
Rule_1：if[＜y 1 ＝B＞]and＜y 2 ＝B＞
then＜u 1 ＝BB＞and＜u 2 ＝SS＞；
Rule_2：if[＜y 1 ＝B＞]and＜y 2 ＝M＞t
hen＜u 1 ＝MM＞and＜u 2 ＝MS＞；
Rule_3：if[＜y 1 ＝B＞]and＜y 2 ＝S＞
then＜u 1 ＝SS＞and＜u 2 ＝MM＞；
Rule_4：if[＜y 1 ＝M＞]and＜y 2 ＝B＞
then＜u 1 ＝MB＞and＜u 2 ＝MM＞；
Rule_5：if[＜y 1 ＝M＞]and＜y 2 ＝M＞
then＜u 1 ＝MM＞and＜u 2 ＝MB＞；
Rule_6：if[＜y 1 ＝M＞]and＜y 2 ＝S＞
then＜u 1 ＝SS＞and＜u 2 ＝MB＞；
Rule_7：if[＜y 1 ＝S＞]and＜y 2 ＝B＞
then＜u 1 ＝BB＞and＜u 2 ＝MM＞；
Rule_8：if[＜y 1 ＝S＞]and＜y 2 ＝M＞
then＜u 1 ＝MS＞and＜u 2 ＝MM＞；
Rule_9：if[＜y 1 ＝S＞]and＜y 2 ＝S＞
then＜u 1 ＝SS＞and＜u 2 ＝BB＞。
in S108, the target charge vehicle is charged with the effective charge time and the charge rate.
Fig. 2 is a control strategy overall block diagram of a flexible charging method of a dc charging stake according to another exemplary embodiment.
As can be seen from fig. 2, a user inputs an expected charging time Tep through a terminal, a direct-current charging pile reads related battery data through a battery BMS system, wherein the battery data comprises an SOC and a battery voltage Vbat, the SOC and the Tep form two controlled input quantities, and the effective charging time TC and the charging rate Ce of each electric vehicle are obtained by fuzzy control; in addition, the SOO and the voltage Vbat read from the battery BMS by the dc charging post are used as two control input amounts for battery SOC and voltage management, the output power variation dPbat required for keeping the battery in the SOC and voltage normal range is calculated, and is converted into the charge rate variation dCe by the charge rate converter, and the charge rate ce_final required for the electric vehicle is obtained by adding the charge rate variation dCe to the fuzzy controller output Ce.
According to the flexible charging method of the direct current charging pile, a target charging vehicle and target charging time are obtained according to a charging request of a user; acquiring the state of charge of a battery in the target charging vehicle; determining an effective charging time and a charging rate based on a fuzzy control algorithm and the target charging time and the state of charge; and the method for charging the target charging vehicle by the effective charging time and the charging rate can realize the maximized satisfaction of the direct current charging pile on the user demand, ensure the protection of the battery in the charging process and prolong the service life of the electric vehicle.
The technical problem to be solved and the technical task to be put forward in the disclosure are to improve and perfect the control strategy of the existing direct current charging pile, so that the direct current charging pile is in information sharing with a user and a battery to cooperatively control charging, the direct current charging pile can maximally meet the user demand, the battery can be protected in the charging process, and the service life of the electric vehicle is prolonged.
It should be clearly understood that this disclosure describes how to make and use particular examples, but the principles of this disclosure are not limited to any details of these examples. Rather, these principles can be applied to many other embodiments based on the teachings of the present disclosure.
Fig. 3 is a flow chart illustrating a flexible charging method of a dc charging stake according to another exemplary embodiment.
As shown in fig. 3, in S302, during the charging process, the current battery state of the target charging vehicle is acquired in real time. May include: acquiring the current charge state of the target charging vehicle in real time; and/or acquiring the current voltage state of the target charging vehicle in real time.
In S304, it is determined whether the current battery state satisfies a condition. Wherein when the current battery state does not satisfy the condition, the method comprises the following steps: when the current state of charge exceeds a charge threshold range; and/or when the current voltage state is outside a voltage threshold range; and determining that the current battery state does not meet a condition.
And a battery SOC regulation and battery overvoltage and undervoltage protection control strategy is designed, and the charging multiplying power Ce is cooperatively and finely adjusted, so that the battery operation is effectively protected, and the service life of the battery is prolonged.
In S306, a modified charge time and a modified charge rate are determined from the target charge time and the current state of charge. May include: when the current state of charge exceeds a charge threshold range, determining the changed charge time and the changed charge rate through the charge threshold range, the target charge time and the current state of charge; and/or determining the changed charging time and the changed charging rate through a voltage threshold range and the target charging time and the current state of charge when the current state of voltage exceeds the voltage threshold range.
And (3) designing battery SOC management and overvoltage/undervoltage protection control, and carrying out fine adjustment on charging parameters on the fuzzy control output result, so that the battery SOC operates in a threshold range [ SOC low, SOCh i gh ], and the battery voltage is maintained in a threshold range [ Vbat_min, vbat_max ], thereby being beneficial to prolonging the service life of the battery.
In S308, the charging power of the dc charging stake is adjusted by the modified charging time and the modified charging rate.
When the battery SOC reaches the maximum or minimum allowable value boundary SOC llow, SOCh i gh and the battery voltage reaches the under-voltage or over-voltage protection threshold vbat_min, vbat_max, the controller initiates an event-triggered mode, and the fuzzy controller recalculates and refreshes the results of outputs Ce and TC.
Fig. 4 is a battery SOC and voltage management control scheme diagram illustrating a flexible charging method of a dc charging stake according to another exemplary embodiment.
Fig. 4 is a battery SOC and voltage management control scheme diagram. The control is realized in two parts, and the change rate dPbat_SOC of the charging power is obtained by the SOC regulation controller, wherein the relation dP is satisfied bat_SOC ＝dP bat_max δ SOC ，δ SOC Determined by a battery SOC minimum maximum allowable threshold SOClow, SOChigh;
further: dP bat_SOC ＝dP bat_max δ SOC
δ SOC ＝min(1，max(-1，θ(soc))；
Figure BDA0002331788540000091
The output of the power change rate of the battery under-voltage and over-voltage protection controller meets the following conditions: dP bat ＝dP bat_SOC δ V Wherein delta V Is determined by the battery under-voltage and over-voltage protection thresholds vbat_min and vbat_max, and the battery rated output voltage vbat_e.
Further: dP bat ＝dP bat_SOC δ V
Figure BDA0002331788540000092
Those skilled in the art will appreciate that all or part of the steps implementing the above described embodiments are implemented as a computer program executed by a CPU. The above-described functions defined by the above-described methods provided by the present disclosure are performed when the computer program is executed by a CPU. The program may be stored in a computer readable storage medium, which may be a read-only memory, a magnetic disk or an optical disk, etc.
Furthermore, it should be noted that the above-described figures are merely illustrative of the processes involved in the method according to the exemplary embodiments of the present disclosure, and are not intended to be limiting. It will be readily appreciated that the processes shown in the above figures do not indicate or limit the temporal order of these processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, for example, among a plurality of modules.
The following are device embodiments of the present disclosure that may be used to perform method embodiments of the present disclosure. For details not disclosed in the embodiments of the apparatus of the present disclosure, please refer to the embodiments of the method of the present disclosure.
Fig. 5 is a block diagram of a flexible charging device for a dc charging stake, which is illustrated in accordance with an exemplary embodiment. As shown in fig. 5, the flexible charging device 50 of the dc charging stake includes: a request module 502, a data module 504, a parameter module 506, and a charging module 508.
The request module 502 is configured to obtain a target charging vehicle and a target charging time according to a charging request of a user;
the data module 504 is configured to obtain a state of charge of a battery in the target charging vehicle;
the parameter module 506 is configured to determine an effective charging time and a charging rate based on a fuzzy control algorithm and the target charging time, the state of charge; and
the charging module 508 is configured to charge the target charging vehicle with the effective charging time and the charging rate.
The flexible charging device 50 of the dc charging stake may further include: the state module is used for acquiring the current battery state of the target charging vehicle in real time in the charging process; and the adjusting module is used for adjusting the charging power when the current battery state does not meet the condition.
According to the flexible charging device of the direct-current charging pile, a target charging vehicle and target charging time are obtained according to a charging request of a user; acquiring the state of charge of a battery in the target charging vehicle; determining an effective charging time and a charging rate based on a fuzzy control algorithm and the target charging time and the state of charge; and the method for charging the target charging vehicle by the effective charging time and the charging rate can realize the maximized satisfaction of the direct current charging pile on the user demand, ensure the protection of the battery in the charging process and prolong the service life of the electric vehicle.
Fig. 6 is a block diagram of an electronic device, according to an example embodiment.
An electronic device 600 according to such an embodiment of the present disclosure is described below with reference to fig. 6. The electronic device 600 shown in fig. 6 is merely an example and should not be construed to limit the functionality and scope of use of embodiments of the present disclosure in any way.
As shown in fig. 6, the electronic device 600 is in the form of a general purpose computing device. Components of electronic device 600 may include, but are not limited to: at least one processing unit 610, at least one memory unit 620, a bus 630 connecting the different system components (including the memory unit 620 and the processing unit 610), a display unit 640, etc.
Wherein the storage unit stores program code executable by the processing unit 610 such that the processing unit 610 performs steps according to various exemplary embodiments of the present disclosure described in the above-described electronic prescription flow processing methods section of the present specification. For example, the processing unit 610 may perform the steps as shown in fig. 1, 3.
The memory unit 620 may include readable media in the form of volatile memory units, such as Random Access Memory (RAM) 6201 and/or cache memory unit 6202, and may further include Read Only Memory (ROM) 6203.
The storage unit 620 may also include a program/utility 6204 having a set (at least one) of program modules 6205, such program modules 6205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
Bus 630 may be a local bus representing one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or using any of a variety of bus architectures.
The electronic device 600 may also communicate with one or more external devices 600' (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 600, and/or any devices (e.g., routers, modems, etc.) that enable the electronic device 600 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 650. Also, electronic device 600 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 660. The network adapter 660 may communicate with other modules of the electronic device 600 over the bus 630. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 600, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, raid systems, tape drives, data backup storage systems, and the like.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, as shown in fig. 7, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, or a network device, etc.) to perform the above-described method according to the embodiments of the present disclosure.
The software product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable storage medium may also be any readable medium that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
The computer-readable medium carries one or more programs, which when executed by one of the devices, cause the computer-readable medium to perform the functions of: acquiring a target charging vehicle and target charging time according to a charging request of a user; acquiring the state of charge of a battery in the target charging vehicle; determining an effective charging time and a charging rate based on a fuzzy control algorithm and the target charging time and the state of charge; and charging a target charging vehicle by the effective charging time and the charging rate.
Those skilled in the art will appreciate that the modules may be distributed throughout several devices as described in the embodiments, and that corresponding variations may be implemented in one or more devices that are unique to the embodiments. The modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or in combination with the necessary hardware. Thus, the technical solutions according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, and include several instructions to cause a computing device (may be a personal computer, a server, a mobile terminal, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that this disclosure is not limited to the particular arrangements, instrumentalities and methods of implementation described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (4)

1. The flexible charging method of the direct current charging pile is characterized by comprising the following steps of:
acquiring a target charging vehicle and target charging time according to a charging request of a user;
acquiring the state of charge of a battery in the target charging vehicle;
determining an effective charging time and a charging rate based on a fuzzy control algorithm and the target charging time and the state of charge; and
charging a target charging vehicle by the effective charging time and the charging rate;
further comprises:
acquiring the current battery state of the target charging vehicle in real time in the charging process; and
when the current battery state does not meet the condition, the charging rate is adjusted;
acquiring the current battery state of the target charging vehicle in real time comprises the following steps:
acquiring the current charge state of the target charging vehicle in real time; and/or
Acquiring the current voltage state of the target charging vehicle in real time;
when the current battery state does not meet the condition, the method comprises the following steps:
when the current state of charge exceeds a charge threshold range; and/or
When the current voltage state exceeds a voltage threshold range;
determining that the current battery state does not meet a condition;
adjusting the charge rate, comprising:
determining a changed charging time and a changed charging rate according to the target charging time and the current state of charge; and
adjusting the charging rate of the direct current charging pile through the changed charging time and the changed charging rate;
determining a modified charge time and a modified charge rate from the target charge time, the current state of charge, comprising:
when the current state of charge exceeds a charge threshold range, determining the changed charge time and the changed charge rate through the charge threshold range, the target charge time and the current state of charge; and/or
And when the current voltage state exceeds a voltage threshold range, determining the changed charging time and the changed charging rate through the voltage threshold range, the target charging time and the current charge state.
2. The flexible charging method of a direct current charging pile according to claim 1, wherein obtaining the state of charge of the battery in the target charging vehicle comprises:
and acquiring the charge state of the battery from a battery management system of the target charging vehicle.
3. The flexible charging method of a direct current charging pile according to claim 1, wherein determining an effective charging time and a charging rate based on a fuzzy control algorithm and the target charging time, the state of charge, comprises:
reasoning the target charging time and the state of charge through a Mamdani fuzzy reasoning algorithm; and
the solution is performed by a barycenter method.
4. A flexible charging device for a dc charging pile for performing a flexible charging method for a dc charging pile according to any one of claims 1-3, comprising:
the request module is used for acquiring a target charging vehicle and target charging time according to a charging request of a user;
the data module is used for acquiring the charge state of the battery in the target charging vehicle;
the parameter module is used for determining effective charging time and charging rate based on a fuzzy control algorithm, the target charging time and the state of charge; and
the charging module is used for charging a target charging vehicle through the effective charging time and the charging rate;
further comprises:
the state module is used for acquiring the current battery state of the target charging vehicle in real time in the charging process; and
and the adjusting module is used for adjusting the charging rate when the current battery state does not meet the condition.
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