CN113276722A - Charging method and device - Google Patents

Charging method and device Download PDF

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Publication number
CN113276722A
CN113276722A CN202110559041.4A CN202110559041A CN113276722A CN 113276722 A CN113276722 A CN 113276722A CN 202110559041 A CN202110559041 A CN 202110559041A CN 113276722 A CN113276722 A CN 113276722A
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charging
power
module
vehicle
direct current
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CN113276722B (en
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李帅
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Jiangsu Dupu New Energy Technology Co ltd
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Dupu Suzhou New Energy Technology 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention provides a charging method and a charging device, comprising the following steps: acquiring a charging request of a vehicle; calculating according to the charging voltage and the charging current, and determining the charging power of the charging request; and controlling the charging pile to enter a charging and discharging mode when the charging power of the charging request is determined to be smaller than the maximum output power of the direct current/direct current (DC/DC) module, so as to charge the vehicle and the battery pack of the charging pile simultaneously. The electric quantity of the battery pack is kept at a higher quantity to deal with the power-off condition of the power grid, so that the vehicle is charged in time, and the charging experience of a driver can be improved.

Description

Charging method and device
Technical Field
The present invention relates to the field of charging technologies, and in particular, to a charging method and device.
Background
At present, with the wide application of electric automobiles, the charging pile for charging the electric automobiles also receives wide attention. Dispose energy storage battery package in the post that charges, current battery package is often when filling electric pile leisure, utilizes external electric wire netting to charge for the battery package, makes to fill electric pile after the electric wire netting outage, also can charge for electric automobile. Because fill electric pile and can not charge for the vehicle simultaneously with filling the battery package of electric pile, consequently, when the electric wire netting broke down, fill the battery package of electric pile and also be in under the extremely low condition of electric quantity, fill the battery package of electric pile then can't in time charge for the vehicle. Thereby affecting the charging experience for the driver.
Disclosure of Invention
In view of this, embodiments of the present invention provide a charging method and device, so as to solve the problem that in the prior art, a battery pack of a charging pile cannot timely charge a vehicle, which affects user experience of a driver.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a first aspect of an embodiment of the present invention shows a charging method, where the method includes:
acquiring a charging request of a vehicle, wherein the charging request carries charging voltage and charging current required by charging;
calculating according to the charging voltage and the charging current, and determining the charging power of the charging request;
and when the charging power of the charging request is determined to be smaller than the maximum output power of the direct current-to-direct current DC/DC module, controlling the charging pile to enter a charging and discharging mode so as to charge the vehicle and a battery pack of the charging pile simultaneously.
Optionally, the method further includes:
before a charging request of a vehicle is obtained, whether an electric gun of the charging pile is connected with the vehicle is detected;
and if the electric gun of the charging pile is connected with the vehicle, acquiring a charging request of the vehicle.
Optionally, the determining that the charging power of the charging request is smaller than the maximum output power of the DC-to-DC/DC module includes:
judging whether the charging power is smaller than the maximum output power of the direct current-to-direct current DC/DC module;
and if the charging quantity is smaller than the charging quantity, the EMS controls the charging pile to enter a charging and discharging mode so as to charge the vehicle and a battery pack of the charging pile.
Optionally, electric quantity management system EMS control fills electric pile and enters the mode of putting while filling to the vehicle charges with the battery package that fills electric pile, includes:
an electric quantity management system EMS controls an alternating current-to-direct current AC/DC module of a charging pile to output power same as the charging power to a direct current-to-direct current DC/DC module;
controlling the direct current to direct current DC/DC module to charge the vehicle according to the power output by the alternating current to direct current AC/DC module;
when the electric quantity of the battery pack is determined to be smaller than the preset electric quantity, calculating the residual output power of the AC-to-DC AC/DC module according to the charging power and the initial power of the AC-to-DC AC/DC module;
and controlling an AC-to-DC AC/DC module to charge the battery pack of the charging pile according to the residual output power.
A second aspect of the embodiments of the present invention shows a charging apparatus, including:
the charging system comprises an acquisition unit, a charging unit and a charging unit, wherein the acquisition unit is used for acquiring a charging request of a vehicle, and the charging request carries charging voltage and charging current required by charging;
the determining unit is used for calculating according to the charging voltage and the charging current and determining the charging power of the charging request;
and the charging unit is used for controlling the charging pile to enter a charging and discharging mode when the charging power of the charging request is determined to be smaller than the maximum output power of the direct current-to-direct current DC/DC module so as to charge the vehicle and the battery pack of the charging pile simultaneously.
Optionally, the method further includes:
the detection unit is used for detecting whether the electric gun of the charging pile is connected with the vehicle or not before the acquisition unit; and if the electric gun of the charging pile is connected with the vehicle, executing an acquisition unit.
Optionally, the charging unit that determines that the charging power of the charging request is smaller than the maximum output power of the DC-to-DC/DC module is specifically configured to: judging whether the charging power is smaller than the maximum output power of the direct current-to-direct current DC/DC module; and if the charging quantity is smaller than the charging quantity, the EMS controls the charging pile to enter a charging and discharging mode so as to charge the vehicle and a battery pack of the charging pile.
Optionally, electric quantity management system EMS control fills electric pile and gets into and fill the mode of putting simultaneously to the vehicle with fill the charging unit that the battery package of electric pile charges, specifically be used for: an electric quantity management system EMS controls an alternating current-to-direct current AC/DC module of a charging pile to output power same as the charging power to a direct current-to-direct current DC/DC module; controlling the direct current to direct current DC/DC module to charge the vehicle according to the power output by the alternating current to direct current AC/DC module; when the electric quantity of the battery pack is determined to be smaller than the preset electric quantity, calculating the residual output power of the AC-to-DC AC/DC module according to the charging power and the initial power of the AC-to-DC AC/DC module; and controlling an AC-to-DC AC/DC module to charge the battery pack of the charging pile according to the residual output power.
Based on the charging method and the charging device provided by the embodiment of the invention, the charging method and the charging device are applied to a charging pile, the charging pile is connected with a vehicle, and the method comprises the following steps: acquiring a charging request of a vehicle, wherein the charging request carries charging voltage and charging current required by charging; calculating according to the charging voltage and the charging current, and determining the charging power of the charging request; and when the charging power of the charging request is determined to be smaller than the maximum output power of the direct current-to-direct current DC/DC module, controlling the charging pile to enter a charging and discharging mode so as to charge the vehicle and a battery pack of the charging pile simultaneously. In the embodiment of the invention, the charging pile calculates the charging power corresponding to the charging request through the charging voltage and the charging current in the charging request; and when the charging power of the charging request is determined to be smaller than the maximum output power of the DC-to-DC/DC module, controlling the charging pile to enter a charging and discharging mode so as to charge the vehicle and the battery pack of the charging pile simultaneously. The electric quantity of the battery pack is kept at a higher quantity to deal with the power-off condition of the power grid, so that the vehicle is charged in time, and the charging experience of a driver can be improved.
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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a diagram illustrating an application structure of an external charging device, a charging pile and a vehicle according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a charging method according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of another charging method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a charging device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another charging device according to an embodiment of the present invention.
Detailed Description
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.
In this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Known by the background art, fill electric pile and can not charge for the vehicle with the battery package that fills electric pile simultaneously, consequently, when the electric wire netting breaks down, fill electric pile's battery package and also be in under the extremely low condition of electric quantity, fill electric pile's battery package then can't in time charge for the vehicle. Thereby affecting the user experience of the driver.
In the embodiment of the invention, the charging pile calculates the charging power corresponding to the charging request through the charging voltage and the charging current in the charging request; and when the charging power of the charging request is determined to be smaller than the maximum output power of the DC-to-DC/DC module, controlling the charging pile to enter a charging and discharging mode so as to charge the vehicle and the battery pack of the charging pile simultaneously. The electric quantity of the battery pack is kept at a higher quantity to deal with the power-off condition of the power grid, so that the vehicle is charged in time, and the charging experience of a driver can be improved.
Referring to fig. 1, a diagram of an application structure of an external charging device, a charging pile, and a vehicle according to an embodiment of the present invention is shown.
The external charging device 10 is connected to the charging post 20, and the charging post 20 is connectable to the vehicle 30.
The charging pile 20 is a power supply device that supplies dc power to the power battery of the vehicle 30.
And the external charging equipment 10 is used for providing alternating current for the charging pile.
The external charging device 10 may be a three-phase power; the vehicle 30 is an electric automobile.
The charging pile 20 comprises an electric energy management system EMS201, a direct current-to-direct current DC/DC module 202 and a battery pack 203.
The energy management system EMS201 is configured to control a power output of the DC-to-DC/DC module 202.
The process of implementing the charging method based on the application architecture shown in the embodiment of the present invention specifically includes:
the vehicle 30 collects the remaining electric energy of its battery management module through a vehicle controller (ECU), calculates the charging current and the charging voltage required for full charge according to the collected electric energy, generates a charging request, and sends the charging request to the charging pile 20.
The charging pile 20 is used for acquiring a charging request of a vehicle, wherein the charging request carries charging voltage and charging current required by charging; calculating according to the charging voltage and the charging current, and determining the charging power of the charging request; when it is determined that the charging power of the charging request is less than the maximum output power of the DC-to-DC/DC module 202, the electric quantity management system EMS201 controls the charging pile to enter a charging and discharging mode, so as to simultaneously charge the vehicle 30 and the battery pack 203 of the charging pile.
It should be noted that the maximum output power of the DC-to-DC/DC module 202 is empirically set in advance.
Optionally, the charging pile 20 is further provided with an AC-to-DC AC/DC module 204.
Specifically, the external charging device 10 is connected to an AC-to-DC AC/DC module 204 in the charging pile 20; the AC-to-DC AC/DC module 204 is also connected to the DC-to-DC/DC module 202 and the battery pack 203, respectively.
A DC-to-DC/DC module 202 for charging the vehicle 30.
An AC-to-DC AC/DC module 204 for storing power input from the external charging device 10; converting alternating current input by external charging equipment into direct current; the battery pack 203 is charged with the charging power of the converted direct current, and is transmitted to the direct current to direct current DC/DC module 202 using the converted direct current.
In the embodiment of the invention, the charging pile calculates the charging power corresponding to the charging request through the charging voltage and the charging current in the charging request; and when the charging power of the charging request is determined to be smaller than the maximum output power of the DC-DC/DC module, controlling the charging pile to enter a charging and discharging mode so as to charge the vehicle and the battery pack of the charging pile simultaneously. The electric quantity of the battery pack is kept at a higher quantity to deal with the power-off condition of the power grid, so that the vehicle is charged in time, and the charging experience of a driver can be improved.
Based on the above application architecture shown in the above embodiment, referring to fig. 2, a schematic flow diagram of a charging method shown in the embodiment of the present invention is shown, where the method includes:
step S201: a charging request of a vehicle is obtained.
In step S201, the charging request carries the charging voltage and the charging current required for charging.
Optionally, a vehicle controller (Electronic Control Unit, ECU) collects the remaining electric quantity of the battery management module, calculates a charging current and a charging voltage required for full charging according to the collected electric quantity, generates a charging request, and sends the charging request to the charging pile.
In the specific implementation process of step S201, the charging pile obtains a charging request carrying a charging voltage and a charging current of the vehicle.
Step S202: and calculating according to the charging voltage and the charging current, and determining the charging power of the charging request.
In the process of implementing step S202 specifically, the product of the charging voltage and the charging current is calculated to obtain the charging power of the charging request.
Step S203: and judging whether the charging power of the charging request is smaller than the maximum output power of the direct current-to-direct current DC/DC module, if so, executing the step S204, and if so, charging the vehicle according to a preset charging mode.
In the process of specifically implementing step S203, it is determined whether the charging power requested by the charging request reaches the maximum output power of the DC-to-DC/DC module, when the charging voltage and the charging current requested by the vehicle end, that is, the charging power requested by the charging request, do not reach the maximum output power of the DC-to-DC/DC module, step S204 is executed, and when the charging power requested by the charging request reaches the maximum output power of the DC/DC module, the vehicle is charged according to a preset charging mode.
It should be noted that the maximum output power of the DC-to-DC/DC module is set empirically in advance, for example, 330 v.
The preset charging mode is that a technician performs equipment according to experience in advance, such as: the vehicle can be directly charged according to the output power of the direct current-to-direct current DC/DC module.
Step S204: and the EMS controls the charging pile to enter a charging and discharging mode so as to charge the vehicle and a battery pack of the charging pile.
In the process of specifically implementing the step S204, the charging pile enters a cross-over mode, and at this time, the EMS controls the charging pile to enter a charging mode in which the charging pile is charged and discharged, so as to charge the vehicle, and simultaneously, the remaining electric quantity is used for charging the battery pack of the charging pile.
In the embodiment of the invention, a charging request of a vehicle is obtained; calculating according to the charging voltage and the charging current, and determining the charging power of the charging request; and when the charging power of the charging request is determined to be smaller than the maximum output power of the DC-to-DC/DC module, controlling the charging pile to enter a charging and discharging mode so as to charge the vehicle and the battery pack of the charging pile simultaneously. The electric quantity of the battery pack is kept at a higher quantity to deal with the power-off condition of the power grid, so that the vehicle is charged in time, and the charging experience of a driver can be improved.
Based on the charging method shown in the embodiment of the present invention, in the process of executing step S204 to control the charging pile to enter the charging and discharging mode so as to charge the vehicle and the battery pack of the charging pile, the method includes the following steps:
step S11: and controlling an alternating current-to-direct current (AC/DC) module of the charging pile to output the same power as the charging power to the DC-to-DC/DC module.
Optionally, the AC-to-DC AC/DC module receives AC power transmitted by an external charging device, and converts the AC power into DC power to obtain the original electric quantity.
In the process of implementing step S11, the AC-to-DC AC/DC module outputs DC power to the AC-to-DC AC/DC module according to the charging power.
Step S12: and controlling the direct current-to-direct current (DC/DC) module to charge the vehicle according to the power output by the alternating current-to-DC AC/DC module.
In the process of implementing step S12, the AC-to-DC AC/DC module is controlled to charge the vehicle with the same power as the charging power.
Step S13: and determining whether the electric quantity of the battery pack is smaller than a preset electric quantity, if so, executing the steps S14 to S15, and if not, not charging the battery pack.
In the process of specifically implementing the step S13, whether the electric quantity of the battery pack of the charging pile is preset is detected, if so, the steps S14 to S15 are executed, and if not, the battery pack is not charged.
It should be noted that the preset electric quantity refers to a certain preset high electric quantity state.
Step S14: and calculating the residual output power of the AC-to-DC AC/DC module according to the charging power and the original power of the AC-to-DC AC/DC module.
In the process of specifically implementing step S14, first, the electric quantity corresponding to the charging power is determined; and then calculating the difference between the electric quantity corresponding to the charging power and the original electric quantity of the AC-DC AC/DC module to obtain the residual output power of the AC-DC AC/DC module.
It should be noted that the original power of the AC-to-DC AC/DC module is the same as the maximum output power of the DC-to-DC/DC module.
Step S15: and controlling an AC-to-DC AC/DC module to charge the battery pack of the charging pile according to the residual output power.
In the process of implementing step S15, when the AC-to-DC AC/DC module charges the vehicle, the battery pack of the charging pile is charged with the remaining output power of the AC-to-DC AC/DC module.
In the embodiment of the invention, an AC-to-DC AC/DC module for controlling a charging pile outputs the same power as the charging power to a DC-to-DC/DC module; controlling the direct current to direct current DC/DC module to charge the vehicle according to the power output by the alternating current to direct current AC/DC module; when determining whether the electric quantity of the battery pack is smaller than a preset electric quantity, determining the electric quantity corresponding to the charging power; and then calculating the difference between the electric quantity corresponding to the charging power and the original electric quantity of the AC-DC AC/DC module to obtain the residual output power of the AC-DC AC/DC module. And finally, controlling an AC-to-DC AC/DC module to charge the battery pack of the charging pile according to the residual output power. Thereby make the electric quantity of battery package keep at a higher volume to the outage condition of reply electric wire netting, and then make to fill electric pile and can in time charge for the vehicle, and can improve driver's the experience of charging.
Based on the charging method shown in the above embodiment of the present invention, referring to fig. 3, a schematic flow chart of another charging method shown in the embodiment of the present invention is shown, where the method includes:
step S301: detecting whether a charging gun of the charging pile is connected with the vehicle or not, if so, executing a step S302, and if not, returning to execute the step S301.
In the specific implementation process of step S301, it is determined whether the charging gun of the charging pile is connected to the charging port of the vehicle, if the charging gun of the charging pile is connected to the charging port of the vehicle, step S302 is executed, and if the charging gun of the charging pile is not connected to the charging port of the vehicle, step S301 is executed again.
It should be noted that there is at least one rifle that charges in the electric pile of filling, and when the quantity of rifle that charges was a plurality of, it can be that a plurality of cars charge simultaneously to fill electric pile.
Step S302: a charging request of a vehicle is obtained.
In step S302, the charging request carries the charging voltage and the charging current required for charging.
Step S303: and calculating according to the charging voltage and the charging current, and determining the charging power of the charging request.
Step S304: and judging whether the charging power of the charging request is smaller than the maximum output power of the direct current-to-direct current DC/DC module, if so, executing the step S305, and if so, charging the vehicle according to a preset charging mode.
Step S305: and the EMS controls the charging pile to enter a charging and discharging mode so as to charge the vehicle and a battery pack of the charging pile.
It should be noted that the specific implementation process of step S302 to step S305 is the same as the specific implementation process of step S201 to step S204 shown in the above embodiments, and reference may be made to each other.
Optionally, when it is detected that a plurality of charging guns of the charging pile are connected with the charging ports of the vehicles, a charging request of each vehicle is obtained; then, for each charging request, calculating according to the charging voltage and the charging current in the charging request to determine the charging power of each charging request; and then, judging whether the sum of all the charging powers is smaller than the maximum output power of the direct current-to-direct current DC/DC module, if so, controlling the charging pile to enter a charging and discharging mode by an electric quantity management system (EMS) so as to charge each vehicle, and simultaneously charging a battery pack of the charging pile by using the residual electric quantity.
In the embodiment of the invention, whether a vehicle is connected with a charging pile is detected, and when the vehicle is detected to be connected with the charging pile, a charging request of the vehicle is obtained; calculating according to the charging voltage and the charging current, and determining the charging power of the charging request; and when the charging power of the charging request is determined to be smaller than the maximum output power of the DC-to-DC/DC module, controlling the charging pile to enter a charging and discharging mode so as to charge the vehicle and the battery pack of the charging pile simultaneously. The electric quantity of the battery pack is kept at a higher quantity to deal with the power-off condition of the power grid, so that the vehicle is charged in time, and the charging experience of a driver can be improved.
Based on the charging method shown in the above embodiment of the present invention, an embodiment of the present invention also correspondingly discloses a charging device, as shown in fig. 4, which is a schematic structural diagram of the charging device shown in the embodiment of the present invention, and the charging device includes:
an obtaining unit 401 is configured to obtain a charging request of a vehicle, where the charging request carries a charging voltage and a charging current required for charging.
A determining unit 402, configured to perform calculation according to the charging voltage and the charging current, and determine the charging power of the charging request.
A charging unit 403, configured to, when it is determined that the charging power of the charging request is less than the maximum output power of the DC-to-DC/DC module, control, by the electric quantity management system EMS, the charging pile to enter a charging and discharging mode, so as to charge the vehicle and the battery pack of the charging pile at the same time.
It should be noted that, the specific principle and the implementation process of each unit in the charging device disclosed in the embodiment of the present invention are the same as those of the charging method implemented in the present invention, and reference may be made to corresponding parts in the charging method disclosed in the embodiment of the present invention, which are not described herein again.
In the embodiment of the invention, a charging request of a vehicle is obtained; calculating according to the charging voltage and the charging current, and determining the charging power of the charging request; and when the charging power of the charging request is determined to be smaller than the maximum output power of the DC-to-DC/DC module, controlling the charging pile to enter a charging and discharging mode so as to charge the vehicle and the battery pack of the charging pile simultaneously. The electric quantity of the battery pack is kept at a higher quantity to deal with the power-off condition of the power grid, so that the vehicle is charged in time, and the charging experience of a driver can be improved.
Based on the charging device shown in the above embodiment of the present invention, the charging device is further provided with a detection unit 404, as shown in fig. 5.
A detecting unit 404, configured to detect whether an electric gun of the charging pile is connected to the vehicle before the obtaining unit; and if the electric gun of the charging pile is connected with the vehicle, executing an acquisition unit.
In the embodiment of the invention, whether a vehicle is connected with a charging pile is detected, and when the vehicle is detected to be connected with the charging pile, a charging request of the vehicle is obtained; calculating according to the charging voltage and the charging current, and determining the charging power of the charging request; and when the charging power of the charging request is determined to be smaller than the maximum output power of the DC-to-DC/DC module, controlling the charging pile to enter a charging and discharging mode so as to charge the vehicle and the battery pack of the charging pile simultaneously. The electric quantity of the battery pack is kept at a higher quantity to deal with the power-off condition of the power grid, so that the vehicle is charged in time, and the charging experience of a driver can be improved.
Based on the charging apparatus shown in the above embodiment of the present invention, the charging unit 403 that determines that the charging power of the charging request is smaller than the maximum output power of the DC-DC/DC module is specifically configured to: judging whether the charging power is smaller than the maximum output power of the direct current-to-direct current DC/DC module; and if the charging quantity is smaller than the charging quantity, the EMS controls the charging pile to enter a charging and discharging mode so as to charge the vehicle and a battery pack of the charging pile.
Based on the charging device shown in the above embodiment of the present invention, the charging unit 403, which is used for controlling the charging pile to enter the charging and discharging mode simultaneously to charge the vehicle and the battery pack of the charging pile, is specifically configured to: an electric quantity management system EMS controls an alternating current-to-direct current AC/DC module of a charging pile to output power same as the charging power to a direct current-to-direct current DC/DC module; controlling the direct current to direct current DC/DC module to charge the vehicle according to the power output by the alternating current to direct current AC/DC module; when the electric quantity of the battery pack is determined to be smaller than the preset electric quantity, calculating the residual output power of the AC-to-DC AC/DC module according to the charging power and the initial power of the AC-to-DC AC/DC module; and controlling an AC-to-DC AC/DC module to charge the battery pack of the charging pile according to the residual output power.
In the embodiment of the invention, an AC-to-DC AC/DC module for controlling a charging pile outputs the same power as the charging power to a DC-to-DC/DC module; controlling the direct current to direct current DC/DC module to charge the vehicle according to the power output by the alternating current to direct current AC/DC module; when determining whether the electric quantity of the battery pack is smaller than a preset electric quantity, determining the electric quantity corresponding to the charging power; and then calculating the difference between the electric quantity corresponding to the charging power and the original electric quantity of the AC-DC AC/DC module to obtain the residual output power of the AC-DC AC/DC module. And finally, controlling an AC-to-DC AC/DC module to charge the battery pack of the charging pile according to the residual output power. Thereby make the electric quantity of battery package keep at a higher volume to the outage condition of reply electric wire netting, and then make to fill electric pile and can in time charge for the vehicle, and can improve driver's the experience of charging.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the 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 network units. 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.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. A method of charging, the method comprising:
acquiring a charging request of a vehicle, wherein the charging request carries charging voltage and charging current required by charging;
calculating according to the charging voltage and the charging current, and determining the charging power of the charging request;
and when the charging power of the charging request is determined to be smaller than the maximum output power of the direct current-to-direct current DC/DC module, controlling the charging pile to enter a charging and discharging mode so as to charge the vehicle and a battery pack of the charging pile simultaneously.
2. The method of claim 1, further comprising:
before a charging request of a vehicle is obtained, whether an electric gun of the charging pile is connected with the vehicle is detected;
and if the electric gun of the charging pile is connected with the vehicle, acquiring a charging request of the vehicle.
3. The method of claim 1, wherein the determining that the charging power of the charging request is less than the maximum output power of a DC-to-DC/DC module comprises:
judging whether the charging power is smaller than the maximum output power of the direct current-to-direct current DC/DC module;
and if the charging quantity is smaller than the charging quantity, the EMS controls the charging pile to enter a charging and discharging mode so as to charge the vehicle and a battery pack of the charging pile.
4. The method of claim 1, wherein the Energy Management System (EMS) controls a charging pile to enter a charging and discharging mode to charge the vehicle and a battery pack of the charging pile, and the method comprises the following steps:
an electric quantity management system EMS controls an alternating current-to-direct current AC/DC module of a charging pile to output power same as the charging power to a direct current-to-direct current DC/DC module;
controlling the direct current to direct current DC/DC module to charge the vehicle according to the power output by the alternating current to direct current AC/DC module;
when the electric quantity of the battery pack is determined to be smaller than the preset electric quantity, calculating the residual output power of the AC-to-DC AC/DC module according to the charging power and the initial power of the AC-to-DC AC/DC module;
and controlling an AC-to-DC AC/DC module to charge the battery pack of the charging pile according to the residual output power.
5. A charging device, the device comprising:
the charging system comprises an acquisition unit, a charging unit and a charging unit, wherein the acquisition unit is used for acquiring a charging request of a vehicle, and the charging request carries charging voltage and charging current required by charging;
the determining unit is used for calculating according to the charging voltage and the charging current and determining the charging power of the charging request;
and the charging unit is used for controlling the charging pile to enter a charging and discharging mode when the charging power of the charging request is determined to be smaller than the maximum output power of the direct current-to-direct current DC/DC module so as to charge the vehicle and the battery pack of the charging pile simultaneously.
6. The apparatus of claim 5, further comprising:
the detection unit is used for detecting whether the electric gun of the charging pile is connected with the vehicle or not before the acquisition unit; and if the electric gun of the charging pile is connected with the vehicle, executing an acquisition unit.
7. The apparatus according to claim 5, wherein the charging unit that determines that the charging power of the charging request is less than the maximum output power of the DC-to-DC/DC module is specifically configured to: judging whether the charging power is smaller than the maximum output power of the direct current-to-direct current DC/DC module; and if the charging quantity is smaller than the charging quantity, the EMS controls the charging pile to enter a charging and discharging mode so as to charge the vehicle and a battery pack of the charging pile.
8. The apparatus of claim 5, wherein the energy management system EMS controls the charging pile to enter a charging and discharging mode to simultaneously charge the vehicle and a battery pack of the charging pile, and is specifically configured to: an electric quantity management system EMS controls an alternating current-to-direct current AC/DC module of a charging pile to output power same as the charging power to a direct current-to-direct current DC/DC module; controlling the direct current to direct current DC/DC module to charge the vehicle according to the power output by the alternating current to direct current AC/DC module; when the electric quantity of the battery pack is determined to be smaller than the preset electric quantity, calculating the residual output power of the AC-to-DC AC/DC module according to the charging power and the initial power of the AC-to-DC AC/DC module; and controlling an AC-to-DC AC/DC module to charge the battery pack of the charging pile according to the residual output power.
CN202110559041.4A 2021-05-21 2021-05-21 Charging method and device Active CN113276722B (en)

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