Method and device for determining dispatchable charging and discharging capacity of electric vehicle charging station

Abstract

The present invention discloses a method and apparatus for determining the dispatchable charging and discharging capacity of an electric vehicle charging station. The method comprises: determining a plurality of electric vehicles connected to a target charging station; obtaining the charging power requirements corresponding to each of the plurality of electric vehicles, and obtaining the duration of time each of the plurality of electric vehicles was connected to a power grid and not charged within a predetermined time period, wherein the power grid includes a power grid that charges the plurality of electric vehicles through the target charging station; and determining the dispatchable charging capacity of the target charging station based on the charging power requirements corresponding to each of the plurality of electric vehicles and the duration of time each of the plurality of electric vehicles was connected to the power grid and not charged within a predetermined time period. The present invention solves the technical problem in related arts of the difficulty in calculating the dispatchable charging capacity of a charging station.

Description

Technical Field

[0001] The present invention relates to the field of power systems, and in particular to a method and device for determining the dispatchable charging and discharging capacity of an electric vehicle charging station. Background Art

[0002] Taking electric vehicle charging stations as units, the charging and discharging power at a certain moment in the station can be scheduled and controlled. When scheduling the charging and discharging power of electric vehicle charging stations, it is necessary to obtain the dispatchable charging capacity of the charging station. In related technologies, it is usually necessary to calculate the dispatchable charging capacity of the charging station by obtaining parameters such as the initial SOC (State of Charge, battery state of charge, indicating the remaining capacity of the battery, the ratio of the remaining capacity to the total capacity) and the expected SOC of the electric vehicle. In practical applications, these parameters are difficult to obtain, resulting in difficulty in calculating the dispatchable charging capacity of the charging station. That is, in related technologies, there is a technical problem that it is difficult to determine the dispatchable charging capacity of the charging station.

[0003] To address the above-mentioned problems, no effective solutions have been proposed so far. Summary of the Invention

[0004] The embodiments of the present invention provide a method and apparatus for determining the dispatchable charging and discharging capacity of an electric vehicle charging station, so as to at least solve the technical problem in the related art that it is difficult to calculate the dispatchable charging capacity of a charging station.

[0005] According to one aspect of an embodiment of the present invention, a method for determining the dispatchable charging and discharging capacity of an electric vehicle charging station is provided, comprising: determining a plurality of electric vehicles connected to a target charging station; obtaining the charging power requirements corresponding to each of the plurality of electric vehicles, and obtaining the duration of time during which each of the plurality of electric vehicles is connected to the power grid and is not charged within a predetermined time period, wherein the power grid includes a power grid for charging the plurality of electric vehicles through the target charging station; determining the dispatchable charging capacity of the target charging station based on the charging power requirements corresponding to each of the plurality of electric vehicles, and the duration of time during which each of the plurality of electric vehicles is connected to the power grid and is not charged within a predetermined time period.

[0006] Optionally, obtaining the durations during which the multiple electric vehicles are respectively connected to the power grid and not charged within the predetermined time period includes: obtaining the durations during which the multiple electric vehicles are respectively connected to the power grid and the charging durations within the predetermined time period; and obtaining the durations during which the multiple electric vehicles are respectively connected to the power grid and not charged within the predetermined time period based on the durations during which the multiple electric vehicles are respectively connected to the power grid and the charging durations within the predetermined time period.

[0007] Optionally, the method of determining the dispatchable charging capacity of the target charging station based on the charging power demands corresponding to each of the multiple electric vehicles and the durations during which the multiple electric vehicles are connected to the power grid and not charged within a predetermined time period comprises: obtaining the number of the multiple electric vehicles; obtaining the ratio of the durations during which the multiple electric vehicles are connected to the power grid and not charged within the predetermined time period to the duration of the predetermined time period; obtaining the duration ratio and the charging power demands of the corresponding electric vehicles to determine the dispatchable charging capacity of the multiple electric vehicles; obtaining the sum of the dispatchable charging capacities of the multiple electric vehicles, and obtaining the dispatchable charging capacity of the target charging station based on the sum of the dispatchable charging capacities of the multiple electric vehicles.

[0008] Optionally, it includes: determining a plurality of electric vehicles with discharge capabilities connected to a target charging station; obtaining the available capacity and charge-discharge flexibility of the on-board batteries corresponding to the plurality of electric vehicles with discharge capabilities; determining the dispatchable discharge capacity corresponding to the plurality of electric vehicles with discharge capabilities according to the available capacity and charge-discharge flexibility of the on-board batteries corresponding to the plurality of electric vehicles with discharge capabilities; determining the dispatchable discharge capacity of the target charging station according to the dispatchable discharge capacity corresponding to the plurality of electric vehicles with discharge capabilities, wherein the target charging station has a discharge function.

[0009] Optionally, obtaining the available capacities of the on-board batteries corresponding to the multiple electric vehicles with discharge capabilities includes: obtaining the capacities of the on-board power batteries corresponding to the multiple electric vehicles with discharge capabilities; and obtaining the available capacities of the on-board batteries corresponding to the multiple electric vehicles with discharge capabilities based on the capacities of the on-board power batteries corresponding to the multiple electric vehicles with discharge capabilities and the required charging power.

[0010] Optionally, obtaining the charge and discharge flexibility corresponding to each of the multiple electric vehicles with discharge capabilities includes: obtaining the rated discharge power corresponding to each of the multiple electric vehicles with discharge capabilities; obtaining the charge and discharge flexibility corresponding to each of the multiple electric vehicles with discharge capabilities based on the rated discharge power corresponding to each of the multiple electric vehicles with discharge capabilities, and the length of time that the multiple electric vehicles with discharge capabilities are connected to the power grid and not charged within the predetermined time period.

[0011] Optionally, determining the dispatchable discharge capacity of the target charging station based on the dispatchable discharge capacities corresponding to the multiple electric vehicles with discharge capabilities includes: obtaining the sum of the dispatchable discharge capacities of the multiple electric vehicles with discharge capabilities based on the dispatchable discharge capacities corresponding to the multiple electric vehicles with discharge capabilities, and obtaining the discharge dispatchable capacity of the target charging station based on the sum of the dispatchable discharge capacities of the multiple electric vehicles with discharge capabilities.

[0012] According to another aspect of an embodiment of the present invention, a device for determining a dispatchable charging capacity is further provided, comprising: a determination module for determining a plurality of electric vehicles connected to a target charging station; an acquisition module for acquiring the charging demand power amounts corresponding to the plurality of electric vehicles, and acquiring the durations during which the plurality of electric vehicles are connected to the power grid and not charged within a predetermined time period, wherein the power grid includes a power grid for charging the plurality of electric vehicles through the target charging station; and a determination module for determining the dispatchable charging capacity of the target charging station based on the charging demand power amounts corresponding to the plurality of electric vehicles, and the durations during which the plurality of electric vehicles are connected to the power grid and not charged within a predetermined time period.

[0013] According to another aspect of an embodiment of the present invention, a device for determining the schedulable charging and discharging capacity of an electric vehicle charging station is also provided, including: a third determination module for determining a plurality of electric vehicles with discharge capabilities connected to the target charging station; a second acquisition module for acquiring the available capacity and charge and discharge flexibility of the on-board batteries corresponding to the plurality of electric vehicles with discharge capabilities; a fourth determination module for determining the schedulable discharge capacity corresponding to the plurality of electric vehicles with discharge capabilities based on the available capacity and charge and discharge flexibility corresponding to the plurality of electric vehicles with discharge capabilities; and a fifth determination module for determining the schedulable discharge capacity of the target charging station based on the schedulable discharge capacity corresponding to the plurality of electric vehicles with discharge capabilities, wherein the target charging station has a discharge function.

[0014] According to another aspect of an embodiment of the present invention, a non-volatile storage medium is provided, wherein the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute any one of the above methods.

[0015] In an embodiment of the present invention, by determining a plurality of electric vehicles connected to a target charging station, the charging power requirements corresponding to the plurality of electric vehicles are obtained, as well as the duration of time that the plurality of electric vehicles are connected to the power grid and not charged within a predetermined time period, wherein the power grid includes a power grid that charges the plurality of electric vehicles through the target charging station; based on the charging power requirements corresponding to the plurality of electric vehicles and the duration of time that the plurality of electric vehicles are connected to the power grid and not charged within the predetermined time period, the dispatchable charging capacity of the target charging station is determined, thereby solving the technical problem in the related art of difficulty in determining the dispatchable charging capacity of the charging station. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 is a flow chart of a method for determining the dispatchable charging and discharging capacity of an electric vehicle charging station according to an embodiment of the present invention;

[0018] Figure 2 is a flow chart of an optional method for determining the dispatchable discharge capacity of an electric vehicle charging station according to an embodiment of the present invention;

[0019] Figure 3 4 is a framework diagram of an optional apparatus for determining a dispatchable discharge capacity according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0021] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] According to an embodiment of the present invention, an embodiment of a method for determining the dispatchable charging and discharging capacity of an electric vehicle charging station is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0023] Figure 1 FIG. 1 is a flow chart of a method for determining the dispatchable charge and discharge capacity of an electric vehicle charging station according to an embodiment of the present invention. Figure 1 As shown, the method may include the following steps:

[0024] Step S102: Determine a plurality of electric vehicles connected to a target charging station.

[0025] In some optional embodiments, the target charging station is an electric vehicle charging station that can charge multiple models of electric vehicles, and the electric vehicle charging station includes multiple bidirectional charging piles.

[0026] Step S104, obtaining charging power requirements corresponding to the plurality of electric vehicles, and obtaining the duration of time that the plurality of electric vehicles are connected to the power grid and not charged within a predetermined time period, wherein the power grid includes a power grid for charging the plurality of electric vehicles through the target charging station.

[0027] In some optional embodiments, the charging state of an electric vehicle after being connected to the power grid includes multiple states, for example, one of the following: the electric vehicle is connected to a charging station within the power grid and is charging, and the electric vehicle is connected to a charging station within the power grid but is not charging. The connection between the electric vehicle and the charging station may be a wired connection via a charging gun or a wireless connection via a wireless charging device.

[0028] Step S106 , determining the dispatchable charging capacity of the target charging station according to the charging power requirements of the plurality of electric vehicles and the durations of the plurality of electric vehicles being connected to the power grid and not being charged within a predetermined time period.

[0029] In this optional embodiment, the target charging station's dispatchable charging capacity is determined based on the number of electric vehicles connected to the target charging station, the charging power requirements of each of the electric vehicles, and the duration of time each of the electric vehicles was connected to the power grid and not charged within a predetermined time period. The power grid includes the power grid that charges the electric vehicles through the target charging station. The dispatchable charging capacity of the target charging station is determined based on the charging power requirements of each of the electric vehicles and the duration of time each of the electric vehicles was connected to the power grid and not charged within the predetermined time period. In this optional embodiment, the parameters used to calculate the dispatchable charging capacity of the target charging station are all readily available. Calculating the dispatchable charging capacity of the target charging station based on these parameters solves the technical problem in related art of difficulty in calculating the dispatchable charging capacity of a charging station.

[0030] In some optional embodiments, a method for obtaining the duration of time that multiple electric vehicles are connected to the power grid and not charged within a predetermined time period may include the following steps: obtaining the duration of time that the multiple electric vehicles are connected to the power grid and the duration of charging within the predetermined time period; and obtaining the duration of time that the multiple electric vehicles are connected to the power grid and not charged within the predetermined time period based on the duration of time that the multiple electric vehicles are connected to the power grid and the duration of charging within the predetermined time period. In an optional embodiment, the duration of time that the electric vehicles are connected to the power grid and the duration of charging within the predetermined time period can be accurately obtained through historical charging data, and the difference between the duration of time connected to the power grid and the duration of charging can be obtained. This difference is the duration of time that the electric vehicles are connected to the power grid and not charged within the predetermined time period. Based on the method of this optional embodiment, the duration of time that the electric vehicles are connected to the power grid and not charged within the predetermined time period can be accurately obtained.

[0031] In some optional embodiments, the dispatchable charging capacity of a target charging station is determined based on the charging power requirements of multiple electric vehicles and the duration of time that the multiple electric vehicles were connected to the power grid and not charged within a predetermined time period. The method includes: obtaining the number of the multiple electric vehicles; obtaining the ratio of the duration of time that the multiple electric vehicles were connected to the power grid and not charged within the predetermined time period to the duration of the predetermined time period; determining the dispatchable charging capacity of the multiple electric vehicles based on the duration ratio and the charging power requirements of the corresponding electric vehicles; and obtaining the sum of the dispatchable charging capacities of the multiple electric vehicles. Based on the sum of the dispatchable charging capacities of the multiple electric vehicles, the dispatchable charging capacity of the target charging station can be accurately obtained. In one embodiment, the sum of the dispatchable charging capacities of the multiple electric vehicles is determined as the dispatchable charging capacity of the target charging station. In another embodiment, the dispatchable charging capacity of the target charging station is obtained based on the sum of the dispatchable charging capacities of the multiple electric vehicles and a preset correction value.

[0032] In this optional embodiment, the dispatchable charging capacity of the multiple electric vehicles is determined based on the ratio of the time period during which the multiple electric vehicles were connected to the power grid and not charged to the time period of the predetermined time period and the charging power requirements of the corresponding electric vehicles. The dispatchable charging capacity of the target charging station is obtained based on the dispatchable charging capacity of the multiple electric vehicles. When calculating the dispatchable charging capacity of the target charging station, it does not rely on parameters such as the SOC of the electric vehicles that are difficult to obtain at the charging station. As a result, the dispatchable charging capacity of the target charging station can be conveniently and accurately obtained.

[0033] Figure 2 1 is a flow chart of an optional method for determining the dispatchable discharge capacity of an electric vehicle charging station according to an embodiment of the present invention. Figure 2 As shown, the method may include the following steps:

[0034] Step S202, determining a plurality of electric vehicles with discharge capabilities connected to a target charging station;

[0035] Step S204, obtaining the available capacity and charge / discharge flexibility of the onboard batteries corresponding to a plurality of electric vehicles with discharge capabilities;

[0036] Step S206 , determining the dispatchable discharge capacities corresponding to the plurality of electric vehicles with discharge capabilities according to the available capacities and charge and discharge flexibility of the on-board batteries corresponding to the plurality of electric vehicles with discharge capabilities.

[0037] In an optional embodiment, the available capacity and charge and discharge flexibility of the onboard battery of the electric vehicle with discharge capability are compared, and the smaller value between the two is determined as the dispatchable discharge capacity corresponding to the electric vehicle with discharge capability.

[0038] Step S208 : determining the dispatchable discharge capacity of the target charging station according to the dispatchable discharge capacities corresponding to the plurality of electric vehicles with discharge capabilities, wherein the target charging station has a charging function.

[0039] It should be understood that in the related art, when scheduling the charge and discharge power of a charging station with discharge capability, it is necessary to obtain the station's dispatchable discharge capacity. In the related art, this typically requires calculating the station's dispatchable discharge capacity by obtaining parameters such as the initial state of charge (SOC) and expected SOC of the discharge-capable electric vehicle. In practical applications, these parameters are difficult to obtain, making it difficult to calculate the station's dispatchable discharge capacity. In other words, the related art presents a technical problem of difficulty in calculating the dispatchable discharge capacity of a charging station. In this alternative embodiment, the available capacity and charge and discharge flexibility of the onboard batteries of multiple discharge-capable electric vehicles are obtained; the dispatchable discharge capacity of each of the multiple discharge-capable electric vehicles is determined based on the available capacity and charge and discharge flexibility of the onboard batteries of the multiple discharge-capable electric vehicles; and the dispatchable discharge capacity of the target charging station is determined based on the dispatchable discharge capacity of each of the multiple discharge-capable electric vehicles. This solves the technical problem of difficulty in calculating the dispatchable discharge capacity of a charging station in the related art.

[0040] In some optional embodiments, a method for obtaining the available capacities of onboard batteries corresponding to a plurality of electric vehicles with discharge capabilities may include the following steps: obtaining the capacities of the onboard power batteries corresponding to the plurality of electric vehicles with discharge capabilities; and obtaining the available capacities of the onboard batteries corresponding to the plurality of electric vehicles with discharge capabilities based on the capacities of the onboard power batteries corresponding to the plurality of electric vehicles with discharge capabilities and the required charging power. The available capacities of the corresponding onboard batteries are obtained by calculating the capacities of the onboard power batteries corresponding to the plurality of electric vehicles with discharge capabilities and the required charging power. In this process, the available capacities of the corresponding onboard batteries are calculated without the need to obtain relevant parameters from other systems outside the electric vehicle or the target charging station, thereby resolving the problem in related technologies of difficulty in obtaining the available capacities of the onboard batteries due to the difficulty in obtaining external parameters.

[0041] In some optional embodiments, obtaining the charge and discharge flexibility corresponding to each of a plurality of electric vehicles with discharge capabilities may include the following steps: obtaining the rated discharge power corresponding to each of the plurality of electric vehicles with discharge capabilities; accurately obtaining the charge and discharge flexibility corresponding to each of the plurality of electric vehicles with discharge capabilities based on the rated discharge power corresponding to each of the plurality of electric vehicles with discharge capabilities and the length of time that the plurality of electric vehicles with discharge capabilities are connected to the power grid and not charged within a predetermined time period.

[0042] In some optional embodiments, determining the dispatchable discharge capacity of a target charging station based on the dispatchable discharge capacities corresponding to multiple discharge-capable electric vehicles includes: obtaining the sum of the dispatchable discharge capacities of the multiple discharge-capable electric vehicles based on the dispatchable discharge capacities corresponding to the multiple discharge-capable electric vehicles, and obtaining the dispatchable discharge capacity of the target charging station based on the sum of the dispatchable discharge capacities of the multiple discharge-capable electric vehicles. In one embodiment, the sum of the dispatchable discharge capacities corresponding to the multiple discharge-capable electric vehicles is determined as the dispatchable discharge capacity of the target charging station. In this manner, the dispatchable discharge capacity of the target charging station can be accurately obtained.

[0043] Based on the above embodiments and optional embodiments, the present invention provides an optional implementation of a method for determining the dispatchable charging and discharging capacity of an electric vehicle charging station.

[0044] As the sales of electric vehicles increase, the mobile energy storage characteristics of electric vehicles are becoming increasingly prominent.

[0045] The dispatchable capacity assessment technology for electric vehicle onboard power batteries refers to a predictive assessment method that can dispatch and control the charging and discharging power at a certain moment in an electric vehicle charging station. It is very important to be able to accurately and quantitatively calculate the dispatchable charging and discharging capacity of each vehicle. It is the basis for many subsequent research works and can be used for the subsequent orderly charging scheduling strategy formulation, regional power grid coordinated scheduling, etc.

[0046] In related technologies, most of them rely on multiple real-time parameters of a single electric vehicle to calculate the dispatchable charging and discharging capacity, such as initial SOC, expected SOC, expected departure time, etc. In actual charging station scenarios, there is a lack of channels to obtain the above parameters, and it is difficult to promote and apply them. This leads to the problem of lack of methods for calculating dispatchable charging and discharging capacity in related technologies.

[0047] In view of this, this optional embodiment provides a method for determining the dispatchable charging and discharging capacity of an electric vehicle charging station, by determining a plurality of electric vehicles connected to a target charging station;

[0048] Obtaining charging power requirements corresponding to each of the plurality of electric vehicles, and obtaining durations during which each of the plurality of electric vehicles is connected to a power grid and is not charged within a predetermined time period, wherein the power grid includes a power grid for charging the plurality of electric vehicles through a target charging station;

[0049] The target charging station's dispatchable charging capacity is determined based on the charging power requirements of multiple electric vehicles and the duration of time that each of the electric vehicles has been connected to the grid but not charged within a predetermined time period. This addresses the problem of a lack of methods for calculating dispatchable charging capacity in related technologies.

[0050] The application scenario of this optional embodiment is an electric vehicle charging station including multiple bidirectional charging piles, and the charging station is used to charge or discharge various types of electric vehicles.

[0051] In this optional embodiment, the method for obtaining the dispatchable charging capacity includes the following steps:

[0052] The amount of dispatchable electricity will not be greater than the user's charging demand. Therefore, in the calculation process, it is a prerequisite to meet the daily charging demand of electric vehicles. Assume that the orderly charging dispatchable capacity of the i-th electric vehicle charging station connected to the charging pile is C i , by the following method:

[0053]

[0054] Get the orderly charging dispatchable capacity of the i-th electric vehicle charging station as C i .

[0055] Where N is the number of electric vehicles connected to the i-th electric vehicle charging station; E n is the charging power requirement of the nth electric vehicle; T represents a predetermined time period. In this optional embodiment, the predetermined time period is 24 hours, that is, one day is used as the calculation period; t d,n is the time that the nth electric vehicle is not connected to the grid on that day; t c,n The time it takes for the nth electric car to be charged on that day. It should be understood that the time the electric car is not connected to the grid includes the time the electric car is driving on that day, etc.

[0056] In this optional embodiment, the method for obtaining the dispatchable discharge capacity includes the following steps:

[0057] The discharge capacity of an electric vehicle to the grid depends on two factors: charging and discharging flexibility and the available capacity of the onboard battery. The smaller of the two factors is the discharge capacity of the electric vehicle. Charging and discharging flexibility is equal to the product of the rated charging and discharging power and the available parking time during off-peak hours. The available capacity of the onboard battery is equal to the difference between the rated capacity of the onboard battery and the average daily power consumption of the vehicle, as shown in Equation 2:

[0058]

[0059]

[0060] Where, V2G i is the dischargeable adjustable capacity of the i-th electric vehicle charging station; M represents the number of electric vehicles with discharge capacity connected to the i-th electric vehicle charging station; C m is the dispatchable discharge capacity of the mth electric vehicle with discharge capability; P m is the rated discharge power of the mth electric vehicle with discharge capability; B m is the capacity of the onboard power battery of the mth electric vehicle with discharge capability, E m is the charging power required for the mth electric vehicle. d,m is the time that the mth electric vehicle with discharge capability is not connected to the grid on that day; t c,m The time it takes to charge the mth electric car on that day.

[0061] In this optional embodiment, a method for evaluating the dispatchable capacity of an electric vehicle charging station is provided. Specifically, a method for the dispatchable charging capacity of an electric vehicle charging station and a method for the dispatchable discharge capacity of an electric vehicle charging station are provided. The above parameters used in the calculation process can all be obtained through the relevant systems and historical databases of the electric vehicle charging station, without the need for relevant calculations through external data, thereby improving the practical applicability of the method. In addition, the method of this optional embodiment adapts to the development trend of the electric vehicle industry and has value that can be widely applied.

[0062] According to an embodiment of the present invention, a device for implementing the above-mentioned method for determining the charge dispatchable capacity is also provided. Figure 3 1 is a framework diagram of an optional device for determining a dispatchable discharge capacity according to an embodiment of the present invention. Figure 3 As shown, the apparatus includes a first determining module 302, a first acquiring module 304, and a second determining module 306. The details are described below.

[0063] A first determination module 302 is used to determine multiple electric vehicles connected to the target charging station; a first acquisition module 304 is connected to the above-mentioned first determination module 302, and is used to obtain the charging power requirements corresponding to the multiple electric vehicles, and obtain the time periods when the multiple electric vehicles are connected to the power grid and not charged within a predetermined time period, wherein the power grid includes a power grid that charges the multiple electric vehicles through the target charging station; a second determination module 306 is connected to the above-mentioned first acquisition module 304, and is used to determine the dispatchable charging capacity of the target charging station based on the charging power requirements corresponding to the multiple electric vehicles, and the time periods when the multiple electric vehicles are connected to the power grid and not charged within the predetermined time period.

[0064] It should be noted here that the above-mentioned first determination module 302, first acquisition module 304 and second determination module 306 correspond to steps S102 to S106 in the embodiment respectively, and the three modules and the corresponding steps implement the same instances and application scenarios, but are not limited to the contents disclosed in the above embodiments.

[0065] According to another aspect of an embodiment of the present invention, a device for determining the schedulable charging and discharging capacity of an electric vehicle charging station is also provided, including: a third determination module for determining a plurality of electric vehicles with discharge capabilities connected to a target charging station; a second acquisition module for acquiring the available capacity and charge and discharge flexibility of the on-board batteries corresponding to the plurality of electric vehicles with discharge capabilities; a fourth determination module for determining the schedulable discharge capacity corresponding to the plurality of electric vehicles with discharge capabilities based on the available capacity and charge and discharge flexibility of the on-board batteries corresponding to the plurality of electric vehicles with discharge capabilities; and a fifth determination module for determining the schedulable discharge capacity of the target charging station based on the schedulable discharge capacity corresponding to the plurality of electric vehicles with discharge capabilities, wherein the target charging station has a discharge function.

[0066] The embodiment of the present invention further provides a non-volatile storage medium. Optionally, in this embodiment, the non-volatile storage medium can be used to store the program code executed by the method for determining the dispatchable discharge capacity provided in the embodiment.

[0067] Optionally, in this embodiment, the non-volatile storage medium may be located in any computer terminal in a computer terminal group in a computer network, or in any mobile terminal in a mobile terminal group.

[0068] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for executing the following steps: determining a plurality of electric vehicles connected to a target charging station; obtaining charging demand power corresponding to each of the plurality of electric vehicles, and obtaining the duration of time that each of the plurality of electric vehicles is connected to the power grid and is not charged within a predetermined time period, wherein the power grid includes a power grid that charges the plurality of electric vehicles through the target charging station; determining the dispatchable charging capacity of the target charging station based on the charging demand power corresponding to each of the plurality of electric vehicles, and the duration of time that each of the plurality of electric vehicles is connected to the power grid and is not charged within a predetermined time period.

[0069] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for executing the following steps: obtaining the duration of time that multiple electric vehicles are connected to the power grid and not charged within a predetermined time period, including: obtaining the duration of time that multiple electric vehicles are connected to the power grid and the charging duration within the predetermined time period; obtaining the duration of time that multiple electric vehicles are connected to the power grid and not charged within the predetermined time period based on the duration of time that multiple electric vehicles are connected to the power grid and the charging duration within the predetermined time period.

[0070] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for executing the following steps: determining the dispatchable charging capacity of the target charging station based on the charging demand power corresponding to each of the multiple electric vehicles and the duration of time that the multiple electric vehicles are connected to the power grid and not charged within a predetermined time period, including: obtaining the number of the multiple electric vehicles; obtaining the ratio of the duration of time that the multiple electric vehicles are connected to the power grid and not charged within the predetermined time period to the duration of the predetermined time period; obtaining the duration ratio and the charging demand power of the corresponding electric vehicle to determine the dispatchable charging capacity of the multiple electric vehicles; obtaining the sum of the dispatchable charging capacities of the multiple electric vehicles, and obtaining the dispatchable charging capacity of the target charging station based on the sum of the dispatchable charging capacities of the multiple electric vehicles.

[0071] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for executing the following steps: including: obtaining the available capacity and charge and discharge flexibility of the on-board batteries corresponding to multiple electric vehicles; determining the dispatchable discharge capacity corresponding to the multiple electric vehicles based on the available capacity and charge and discharge flexibility of the on-board batteries corresponding to the multiple electric vehicles; determining the dispatchable discharge capacity of the target charging station based on the dispatchable discharge capacity corresponding to the multiple electric vehicles.

[0072] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for executing the following steps: obtaining the available capacity of the on-board batteries corresponding to the multiple electric vehicles, including: obtaining the capacity of the on-board power batteries corresponding to the multiple electric vehicles; obtaining the available capacity of the on-board batteries corresponding to the multiple electric vehicles based on the capacity of the on-board power batteries corresponding to the multiple electric vehicles and the charging demand power.

[0073] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for executing the following steps: obtaining the charging and discharging flexibility corresponding to each of the multiple electric vehicles, including: obtaining the rated discharge power corresponding to each of the multiple electric vehicles; obtaining the charging and discharging flexibility corresponding to each of the multiple electric vehicles based on the rated discharge power corresponding to each of the multiple electric vehicles, and the length of time that the multiple electric vehicles are connected to the power grid and not charged within a predetermined time period.

[0074] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for executing the following steps: determining the dispatchable discharge capacity of the target charging station based on the dispatchable discharge capacities corresponding to the multiple electric vehicles, including: obtaining the available capacity and charge and discharge flexibility of the on-board batteries corresponding to the multiple electric vehicles; determining the dispatchable discharge capacity corresponding to the multiple electric vehicles based on the available capacity and charge and discharge flexibility of the on-board batteries corresponding to the multiple electric vehicles; determining the dispatchable discharge capacity of the target charging station based on the dispatchable discharge capacity corresponding to the multiple electric vehicles.

[0075] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for executing the following steps: determining the dispatchable discharge capacity of the target charging station based on the dispatchable discharge capacities corresponding to the multiple electric vehicles, including: obtaining the sum of the dispatchable discharge capacities of the multiple electric vehicles based on the dispatchable discharge capacities corresponding to the multiple electric vehicles, and obtaining the discharge dispatchable capacity of the target charging station based on the sum of the dispatchable discharge capacities of the multiple electric vehicles.

[0076] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0077] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0078] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0079] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected to achieve the purpose of the present embodiment according to actual needs.

[0080] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0081] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk, etc. Various media that can store program codes.

[0082] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for determining the dispatchable charging and discharging capacity of an electric vehicle charging station, characterized in that: include: Determine multiple electric vehicles connected to a target charging station; Obtaining charging power requirements corresponding to each of the plurality of electric vehicles, and obtaining durations during which each of the plurality of electric vehicles is connected to a power grid and is not charged within a predetermined time period, wherein the power grid includes a power grid that charges the plurality of electric vehicles through the target charging station; Determining the dispatchable charging capacity of the target charging station based on the charging power requirements of the plurality of electric vehicles and the durations during which the plurality of electric vehicles are connected to the power grid and not charged within a predetermined time period; The obtaining of the durations during which the plurality of electric vehicles are connected to the power grid and are not charged within the predetermined time period comprises: obtaining the durations during which the plurality of electric vehicles are connected to the power grid and the durations during which they are charged within the predetermined time period; obtaining the durations during which the plurality of electric vehicles are connected to the power grid and are not charged within the predetermined time period based on the durations during which the plurality of electric vehicles are connected to the power grid and the durations during which they are charged within the predetermined time period; The method of determining the dispatchable charging capacity of the target charging station based on the charging power demands corresponding to the plurality of electric vehicles and the durations during which the plurality of electric vehicles are connected to the power grid and not charged within a predetermined time period comprises: obtaining the number of the plurality of electric vehicles; obtaining the ratio of the durations during which the plurality of electric vehicles are connected to the power grid and not charged within the predetermined time period to the duration of the predetermined time period; obtaining the duration ratio and the charging power demands of the corresponding electric vehicles to determine the dispatchable charging capacity of the plurality of electric vehicles; obtaining the sum of the dispatchable charging capacities of the plurality of electric vehicles, and obtaining the dispatchable charging capacity of the target charging station based on the sum of the dispatchable charging capacities of the plurality of electric vehicles.

2. The method according to claim 1, characterized in that include: Determining a plurality of electric vehicles with discharge capabilities connected to the target charging station; Obtaining the available capacity and charge-discharge flexibility of the on-board batteries corresponding to the plurality of electric vehicles with discharge capabilities; Determining the dispatchable discharge capacities corresponding to the plurality of electric vehicles with discharge capabilities according to the available capacities and charge and discharge flexibility of the on-board batteries corresponding to the plurality of electric vehicles with discharge capabilities; The schedulable discharge capacity of the target charging station is determined according to the schedulable discharge capacities corresponding to the plurality of electric vehicles with discharge capabilities, wherein the target charging station has a discharge function.

3. The method according to claim 2, characterized in that The obtaining of the available capacities of the on-board batteries corresponding to the plurality of electric vehicles having discharge capabilities includes: Obtaining the capacities of the on-board power batteries corresponding to the plurality of electric vehicles having discharge capabilities; The available capacities of the on-board batteries corresponding to the plurality of electric vehicles with discharge capabilities are obtained according to the on-board power battery capacities and charging demand quantities corresponding to the plurality of electric vehicles with discharge capabilities.

4. The method according to claim 2, characterized in that The obtaining of the charge and discharge flexibility corresponding to each of the plurality of electric vehicles having discharge capabilities includes: Obtaining the rated discharge powers corresponding to the plurality of electric vehicles having discharge capabilities; The charging and discharging flexibility corresponding to each of the plurality of electric vehicles with discharge capabilities is obtained based on the rated discharge powers respectively corresponding to the plurality of electric vehicles with discharge capabilities and the durations during which the plurality of electric vehicles with discharge capabilities are connected to the power grid and not charged within the predetermined time period.

5. The method according to claim 2, characterized in that The determining the schedulable discharge capacity of the target charging station according to the schedulable discharge capacities corresponding to the plurality of electric vehicles with discharge capabilities includes: Based on the dispatchable discharge capacities corresponding to the multiple electric vehicles with discharge capabilities, the sum of the dispatchable discharge capacities of the multiple electric vehicles with discharge capabilities is obtained, and the discharge dispatchable capacity of the target charging station is obtained according to the sum of the dispatchable discharge capacities of the multiple electric vehicles with discharge capabilities.

6. A device for determining the charge and discharge dispatchable capacity of an electric vehicle charging station, characterized in that: include: A first determining module is used to determine a plurality of electric vehicles connected to a target charging station; a first acquisition module, configured to acquire the charging power requirements corresponding to each of the plurality of electric vehicles, and to acquire the duration of time during which each of the plurality of electric vehicles is connected to a power grid and is not charged within a predetermined time period, wherein the power grid includes a power grid that charges the plurality of electric vehicles through the target charging station; a second determining module, configured to determine the dispatchable charging capacity of the target charging station based on the charging power requirements of the plurality of electric vehicles and the durations during which the plurality of electric vehicles are connected to the power grid and not charged within a predetermined time period; The first acquisition module is further configured to acquire the duration of time that the plurality of electric vehicles are connected to the power grid and the duration of charging during the predetermined time period; and acquire the duration of time that the plurality of electric vehicles are connected to the power grid and not charged during the predetermined time period based on the duration of time that the plurality of electric vehicles are connected to the power grid and the duration of charging during the predetermined time period. Among them, the second determination module is also used to obtain the number of the multiple electric vehicles; obtain the ratio of the time period during which the multiple electric vehicles are connected to the power grid and not charged within the predetermined time period to the time period of the predetermined time period; obtain the time ratio and the charging power demand of the corresponding electric vehicles to determine the dispatchable charging capacity of the multiple electric vehicles; obtain the sum of the dispatchable charging capacities of the multiple electric vehicles, and obtain the dispatchable charging capacity of the target charging station based on the sum of the dispatchable charging capacities of the multiple electric vehicles.

7. The device according to claim 6, characterized in that Also includes: A third determining module is used to determine a plurality of electric vehicles with discharge capabilities connected to the target charging station; A second acquisition module is used to obtain the available capacity and charge and discharge flexibility of the on-board batteries corresponding to the multiple electric vehicles with discharge capabilities; a fourth determining module, configured to determine the dispatchable discharge capacities corresponding to the plurality of electric vehicles with discharge capabilities, respectively, based on the available capacities and charge and discharge flexibility of the on-board batteries corresponding to the plurality of electric vehicles with discharge capabilities; The fifth determining module is configured to determine the schedulable discharge capacity of the target charging station according to the schedulable discharge capacities corresponding to the plurality of electric vehicles with discharge capabilities, wherein the target charging station has a discharge function.

8. A non-volatile storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 5.

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