CN114559838A

CN114559838A - Charging and discharging method and device for charging pile, storage medium and charging pile

Info

Publication number: CN114559838A
Application number: CN202210221712.0A
Authority: CN
Inventors: 王杰
Original assignee: Chongqing Jinkang Sailisi New Energy Automobile Design Institute Co Ltd
Current assignee: Chongqing Jinkang Sailisi New Energy Automobile Design Institute Co Ltd
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-05-31

Abstract

The embodiment of the invention provides a charging and discharging method and device of a charging pile, a storage medium and the charging pile. The method comprises the following steps: if the detected grid voltage is smaller than a first set threshold value or reaches a first set time, supplying power to the grid through a discharging mode; and if the detected grid voltage is greater than a second set threshold value or reaches a second set time, charging the electric automobile through the charging mode. According to the technical scheme provided by the embodiment of the invention, the energy exchange between the electric vehicle and the power grid can be realized by utilizing the V2L function of the electric vehicle and the V2G mode of the household alternating-current charging pile, the operation cost of the charging pile can be reduced, and the utilization rate of electric quantity can be improved.

Description

Charging and discharging method and device for charging pile, storage medium and charging pile

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of charging and discharging equipment, in particular to a charging and discharging method and device of a charging pile, a storage medium and the charging pile.

[ background of the invention ]

With the popularization of electric vehicles, the electric vehicles are no longer simply used as a transportation tool, and most electric vehicles have a Vehicle to Load (V2L) function, and convert the electric quantity of a battery pack into 220V alternating current for household electrical appliances. Most of the currently-operated charging piles only have a single function of charging electric automobiles, and in the related art, a Vehicle-to-grid (V2G for short) system which is operated charges a power grid through a Direct Current (dc) bidirectional conversion device, so that the operating cost is high, the utilization rate is low, the power is high, a special site is required, and the popularization is difficult.

[ summary of the invention ]

In view of this, embodiments of the present invention provide a charging and discharging method and apparatus for a charging pile, a storage medium, and a charging pile, so as to reduce an operation cost of the charging pile and improve a utilization rate of electric quantity.

In one aspect, an embodiment of the present invention provides a charging and discharging method for a charging pile, where the charging pile includes a charging mode and a discharging mode, and includes:

if the voltage of the power grid is detected to be smaller than a first set threshold value or reach a first set time, the power grid is supplied with power through the discharging mode;

and if the detected grid voltage is greater than a second set threshold value or reaches a second set time, charging the electric automobile through the charging mode.

Optionally, the supplying power to the power grid through the discharging mode includes:

starting a discharge mode;

connecting a resistor with a set discharge mode into a connection detection CC loop;

and sending a charging control CP signal to the electric automobile so as to awaken the electric automobile and close a charging and discharging switch of the electric automobile, wherein the electric automobile supplies power to a power grid through the function of the load V2L from the automobile.

Optionally, the charging the electric vehicle through the charging mode includes:

starting a charging mode;

connecting a resistor with a set charging mode into a connection detection CC loop;

and sending a CP signal to the electric automobile to wake up the electric automobile and closing a charge and discharge switch of the electric automobile to charge the electric automobile.

Optionally, after the electric vehicle supplies power to the power grid through the vehicle-to-load V2L function, the method includes:

and if the electric automobile is discharged to the first set charge state, disconnecting a charge-discharge switch of the electric automobile and exiting the discharge mode.

Optionally, sending a CP signal to an electric vehicle to wake up the electric vehicle, closing a charge/discharge switch by the electric vehicle to charge the electric vehicle, including:

and if the electric automobile is charged to the second set charge state, disconnecting a charge-discharge switch of the electric automobile and exiting the charging mode.

Optionally, the CP signal comprises a pulse width modulation PWM wave with a duty cycle of 1%.

Optionally, the charging post comprises an alternating current charging post.

On the other hand, an embodiment of the present invention provides a charging and discharging device for a charging pile, including:

the power supply module is used for supplying power to the power grid through the discharging mode if the voltage of the power grid is detected to be smaller than a first set threshold value or reach a first set time;

and the charging module is used for charging the electric automobile through the charging mode if the fact that the power grid voltage is greater than a second set threshold value or second set time is reached is detected.

On the other hand, the embodiment of the invention provides a storage medium, which includes a stored program, wherein when the program runs, the device where the storage medium is located is controlled to execute the charging and discharging method of the charging pile.

On the other hand, an embodiment of the present invention provides a charging pile, including a memory and a processor, where the memory is configured to store information including program instructions, and the processor is configured to control execution of the program instructions, where the program instructions are loaded and executed by the processor to implement the charging and discharging method for the charging pile.

According to the technical scheme of the charging and discharging method of the charging pile, if the fact that the voltage of a power grid is smaller than a first set threshold value or reaches a first set time is detected, power is supplied to the power grid through a discharging mode; and if the detected grid voltage is greater than a second set threshold value or reaches a second set time, charging the electric automobile through the charging mode. According to the technical scheme provided by the embodiment of the invention, the energy exchange between the electric vehicle and the power grid can be realized by utilizing the V2L function of the electric vehicle and the V2G mode of the household alternating-current charging pile, the operation cost of the charging pile can be reduced, and the utilization rate of electric quantity can be improved.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a flowchart of a charging and discharging method of a charging pile according to an embodiment of the present invention;

FIG. 2 is a flow chart of FIG. 1 illustrating a method for providing power to a power grid via a discharging mode;

FIG. 3 is a flowchart illustrating charging of the electric vehicle through the charging mode shown in FIG. 1;

fig. 4 is a schematic structural diagram of a charging and discharging device of a charging pile according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a charging pile according to an embodiment of the present invention.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all 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.

It should be understood that the term "and/or" as used herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., A and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

An embodiment of the present invention provides a charging and discharging method for a charging pile, and fig. 1 is a flowchart of the charging and discharging method for the charging pile provided in the embodiment of the present invention, as shown in fig. 1, the method includes:

and 102, if the voltage of the power grid is detected to be smaller than a first set threshold value or reach a first set time, supplying power to the power grid through the discharging mode.

In the embodiment of the invention, each step is executed by a charging pile, the charging pile comprises an alternating current charging pile, the charging pile can be designed into a charging mode and a discharging mode, and the charging mode and the discharging mode can be distinguished by a charging Control (CP) signal and a Connection detection (CC) signal. The CC and the CP in the charging mode are unchanged, the CC resistance in the discharging mode can be designed to be 2K omega +/-10%, and the CP duty ratio can be designed to be 1% -5%.

In the embodiment of the present invention, the first setting threshold and the first setting time can be set according to actual conditions, for example, the first setting threshold is 210V. The user can input first set time through the user terminal and send the first set time to the charging pile. The user terminal comprises a mobile phone, a tablet computer or wearable equipment.

In the embodiment of the invention, if the detected voltage of the power grid is smaller than the first set threshold, the power grid enters the power utilization peak period.

In an embodiment of the present invention, fig. 2 is a flowchart of fig. 1 for supplying power to a power grid through a discharging mode, and as shown in fig. 2, step 102 includes:

and step 1022, turning on a discharging mode.

And step 1024, connecting the resistor with the set discharge mode into a connection detection CC loop.

In the embodiment of the present invention, the discharge mode resistor can be set according to actual conditions, for example, the resistance value of the discharge mode resistor is set to 2K Ω.

And step 1026, sending a charging control CP signal to the electric automobile to wake up the electric automobile, closing a charging and discharging switch by the electric automobile, and supplying power to a power grid by the electric automobile through the function of the vehicle-to-load V2L.

In the embodiment of the invention, the charge and discharge switch comprises an S2 switch.

In an embodiment of the present invention, the CP signal includes a pulse width modulation PWM wave having a duty ratio of 1%.

In the embodiment of the present invention, after step 1026, the method further includes: if the electric vehicle discharges to the first set state of charge, the electric vehicle turns off the S2 switch and exits the discharge mode.

According to the embodiment of the invention, the first set state of charge can be set according to actual conditions.

And 104, if the grid voltage is detected to be greater than a second set threshold value or reach a second set time, charging the electric automobile through the charging mode.

In the embodiment of the present invention, the second setting threshold and the second setting time can be set according to actual conditions, for example, the second setting threshold is 230V. And the user can input second set time through the user terminal and send the second set time to the charging pile. The user terminal comprises a mobile phone, a tablet computer or wearable equipment.

In the embodiment of the invention, if the voltage of the power grid is detected to be greater than the second set threshold, the power grid enters the electricity utilization valley period.

In an embodiment of the present invention, fig. 3 is a flowchart illustrating charging the electric vehicle through the charging mode in fig. 1, and as shown in fig. 3, step 104 includes:

step 1042, starting the charging mode.

And step 1044, connecting the resistor with the set charging mode to the CC loop.

In the embodiment of the present invention, the charge mode resistor can be set according to actual conditions, for example, the resistance value of the charge mode resistor is set to 200 Ω.

And 1046, sending a CP signal to the electric automobile to awaken the electric automobile, and closing the charge and discharge switch by the electric automobile to charge the electric automobile.

In this embodiment of the present invention, after step 1046, further includes: if the electric automobile is charged to the second set charge state, the electric automobile switches off the charge-discharge switch and exits the charging mode.

In the embodiment of the invention, the second set state of charge can be set according to actual conditions.

As an alternative, if the electric vehicle is fully charged, the electric vehicle actively opens the S2 switch and exits the charging mode.

In the embodiment of the invention, the charging pile is designed with a wireless communication function, and a user can control the charging mode or the discharging mode in real time through the user terminal.

In the embodiment of the invention, the charging pile is designed with timing and setting functions, can be set through a user terminal, and automatically enters an intelligent charging and discharging state after an electric automobile is connected by setting a fixed charging and discharging time period.

In the technical scheme provided by the embodiment of the invention, if the voltage of the power grid is detected to be smaller than a first set threshold value or reach a first set time, the power grid is supplied with power through a discharging mode; and if the detected grid voltage is greater than a second set threshold value or reaches a second set time, charging the electric automobile through the charging mode. According to the technical scheme provided by the embodiment of the invention, the energy exchange between the electric vehicle and the power grid can be realized by utilizing the V2L function of the electric vehicle and the V2G mode of the household alternating-current charging pile, the operation cost of the charging pile can be reduced, and the utilization rate of electric quantity can be improved.

In the technical scheme provided by the embodiment of the invention, the power supply capacity of the power grid is limited, higher and higher charging requirements cannot be met, and the electric automobile can be used as an energy storage device to supply power to the power grid during peak power and charge the electric automobile by the power grid during valley power. Can utilize electric vehicle's V2L function and domestic alternating-current charging stake's V2G mode, realize that the energy exchange between electric vehicle and the electric wire netting is more convenient, intelligent, and comprehensive utilization is higher. The capacity attenuation caused by the self-discharge difference of the battery system can be reduced for vehicles which are not used after being stored for a long time, and certain economic benefit can be brought by using the price difference of peak electricity and valley electricity.

According to the technical scheme provided by the embodiment of the invention, more electric vehicles are changed into energy storage devices to charge the power grid, and the high cost caused by the use of the direct current V2G charging pile is avoided.

The embodiment of the invention provides a charging and discharging device of a charging pile. Fig. 4 is a schematic structural diagram of a charging and discharging device of a charging pile according to an embodiment of the present invention, and as shown in fig. 4, the charging and discharging device includes: a power supply module 11 and a charging module 12.

The power supply module 11 is configured to supply power to the power grid through the discharging mode if it is detected that the power grid voltage is less than a first set threshold or reaches a first set time.

The charging module 12 is configured to charge the electric vehicle in the charging mode if it is detected that the grid voltage is greater than a second set threshold or reaches a second set time.

In the embodiment of the present invention, the power supply module 11 is specifically configured to start the discharging mode; connecting a resistor with a set resistor threshold value into a connection detection CC loop; and sending a charging control CP signal to the electric automobile so as to awaken the electric automobile, closing a charging and discharging switch by the electric automobile, and supplying power to a power grid by the electric automobile through a function of vehicle-to-load V2L.

In the embodiment of the present invention, the charging module 12 is specifically configured to start a charging mode; and sending a CP signal to the electric automobile to awaken the electric automobile, and closing a charging and discharging switch by the electric automobile to charge the electric automobile.

The charging and discharging device for the charging pile provided by this embodiment can be used to implement the charging and discharging method for the charging pile in fig. 1, fig. 2, and fig. 3, and for specific description, reference may be made to the embodiment of the charging and discharging method for the charging pile, and a description thereof will not be repeated here.

The embodiment of the invention provides a storage medium, which comprises a stored program, wherein when the program runs, a device where the storage medium is located is controlled to execute each step of the charging and discharging method of the charging pile, and specific description can refer to the charging and discharging method of the charging pile.

The embodiment of the invention provides a charging pile, which comprises a memory and a processor, wherein the memory is used for storing information comprising program instructions, the processor is used for controlling the execution of the program instructions, and the program instructions are loaded and executed by the processor to realize the steps of the charging and discharging method of the charging pile.

Fig. 5 is a schematic diagram of a charging pile according to an embodiment of the present invention. As shown in fig. 5, the charging pile 20 of this embodiment includes: the charging and discharging method applied to the charging pile in the embodiment is implemented by the computer program 23 being executed by the processor 21, and is not repeated herein in order to avoid repetition. Alternatively, the computer program is executed by the processor 21 to implement the functions of each model/unit in the charging and discharging device applied to the charging pile in the embodiment, which are not repeated herein to avoid repetition.

The charging post 20 includes, but is not limited to, a processor 21 and a memory 22. Those skilled in the art will appreciate that fig. 5 is merely an example of the charging post 20 and does not constitute a limitation of the charging post 20 and may include more or fewer components than shown, or some components in combination, or different components, e.g., the charging post may also include input and output devices, network access devices, buses, etc.

The Processor 21 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The storage 22 may be an internal storage unit of the charging post 20, such as a hard disk or a memory of the charging post 20. The memory 22 may also be an external storage device of the charging post 20, such as a plug-in hard disk provided on the charging post 20, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, the memory 22 may also include both an internal storage unit of the charging post 20 and an external storage device. The memory 22 is used for storing computer programs and other programs and data required for charging the charging post. The memory 22 may also be used to temporarily store data that has been output or is to be output.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a Processor (Processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A charging and discharging method of a charging pile is characterized in that the charging pile comprises a charging mode and a discharging mode, and comprises the following steps:

2. The method of claim 1, wherein said powering a grid by said discharging mode comprises:

starting a discharge mode;

3. The method of claim 1, wherein the charging the electric vehicle via the charging mode comprises:

starting a charging mode;

4. The method of claim 2, wherein after the electric vehicle powers the grid through a vehicle-to-load V2L function, comprising:

5. The method of claim 3, wherein sending a CP signal to the electric vehicle to wake up the electric vehicle, and after the electric vehicle closes the charge and discharge switch to charge the electric vehicle, the method comprises:

6. The method of claim 2, wherein the CP signal comprises a pulse width modulated PWM wave having a duty cycle of 1%.

7. The method of claim 1, wherein the charging post comprises an AC charging post.

8. The utility model provides a fill charge-discharge device of electric pile which characterized in that includes:

9. A storage medium, characterized in that the storage medium comprises a stored program, wherein when the program runs, a device where the storage medium is located is controlled to execute the charging and discharging method of the charging pile according to any one of claims 1 to 7.

10. Charging pole comprising a memory for storing information comprising program instructions and a processor for controlling the execution of the program instructions, characterized in that the program instructions are loaded and executed by the processor for carrying out the steps of the charging and discharging method of the charging pole according to any one of claims 1 to 7.