TWI888036B - Charging schedule management methods and systems for electric vehicle charging stations - Google Patents

Abstract

Charging schedule management methods and systems for electric vehicle charging stations are provided, which is applicable to a charging field including a plurality of electric vehicle charging stations, and the electric vehicle charging stations are connected to a server through a network. First, at least one energy management scheme is provided in the server, wherein the energy management scheme records a power distribution logic for controlling the charging operations in each of the electric vehicle charging stations. The server obtains a usage status of each electric vehicle charging station through the network and executes the energy management scheme to determine the target power parameter value of the charging operation of each of first electric vehicle charging stations with a usage status of an operating state. When the server detects that at least one second electric vehicle charging station of the electric vehicle charging stations is in a standby state and determines that the remaining power of the charging field is lower than the output power upper limit value of the second electric vehicle charging station, the server performs a load retention operation. During the load retention operation, the server calculates a reserved power parameter value, sequentially selects at least one adjusted charging station from the first electric vehicle charging stations according to a predetermined parameter in response to the reserved power parameter value, and reduces the target power parameter value of the charging operation of the selected at least one adjusted charging station to a specific power parameter value.

Description

Charging schedule management method and system for electric vehicle charging stations

The present invention relates to a charging schedule management method and system, and in particular to a charging schedule management method and system for an electric vehicle charging station that can flexibly implement an energy management solution based on the usage status.

In recent years, with the rise of environmental awareness and the advancement of electric vehicle technology, the development of electric vehicles powered by electricity to replace traditional vehicles powered by fossil fuels has gradually become an important goal in the automotive field, making electric vehicles more and more popular. In order to improve the range and willingness of electric vehicles, many countries or cities have begun to plan to set up charging stations in public places to provide electricity for electric vehicles, and have also begun to plan to deploy a large number of charging stations in urban areas or scenic areas to make charging electric vehicles more convenient.

Generally speaking, the power equipment in most sites has already been built. If you want to update the power equipment, such as the capacity of the power disk, it is very expensive and time-consuming to build. Generally speaking, the number of electric vehicle charging stations that can be set up in a single charging site is limited by the existing maximum load capacity of the existing site. Therefore, in the case of limited electric vehicle charging stations, electric vehicle drivers may have to spend time waiting because the charging station is in use, or need to find other nearby charging stations to charge, which causes inconvenience in use and thus discourages drivers from using electric vehicles.

Therefore, without updating the power equipment, some charging sites can introduce load adjustment operations to increase the number of electric vehicle charging stations that can be set up in the site. In the load adjustment operation, by reducing the power output of individual electric vehicle charging stations, more electric vehicles can be charged at the same time in this charging site. On the other hand, since the amount of electricity that can be provided by power companies and their power grids is limited, how to prevent the power required for electric vehicle charging operations from causing an impact on the power grid has also become an important issue in the industry. However, due to the communication restrictions between electric vehicle charging stations and electric vehicles, during the load operation, when the rear-end vehicle is charging, the field often jumps, causing the electric vehicle in the charging operation to pause or interrupt or causing the new electric vehicle to be unable to charge. Therefore, how to maintain flexibility and elasticity in the charging management of electric vehicles will become an important key to the development of electric vehicles.

In view of this, the present invention provides a charging schedule management method and system for an electric vehicle charging station.

A charging schedule management method for an electric vehicle charging station according to an embodiment of the present invention is applicable to a charging field including a plurality of electric vehicle charging stations, wherein the charging field has a power limit and each electric vehicle charging station is connected to a server via a network. First, at least one energy management scheme is provided on the server, wherein the energy management scheme records a power distribution logic for controlling a corresponding charging operation of each of the electric vehicle charging stations. The server obtains a usage status of each electric vehicle charging station via the network, wherein the usage status indicates whether each electric vehicle charging station is in an operating state or a standby state. The server executes an energy management scheme to determine a corresponding target power parameter value for the charging operation of each of the plurality of first electric vehicle charging stations in the electric vehicle charging station, and executes the charging operation according to the corresponding target power parameter value through the individual first electric vehicle charging stations, wherein the use state of each first electric vehicle charging station is an operating state and outputs power to at least one coupled electric vehicle according to the target power parameter value. The server detects that the use state of at least one second electric vehicle charging station in the electric vehicle charging station is a standby state, and determines whether a remaining power of a charging field is lower than an output power upper limit value of the second electric vehicle charging station. When the remaining power is lower than the output power upper limit value of the second electric vehicle charging station, the server executes a load reservation operation. In the load reservation operation, the server calculates a reserved power parameter value, and selects at least one adjustment charging station from the first electric vehicle charging station in sequence according to a predetermined parameter and corresponding to the reserved power parameter value, and reduces the target power parameter value corresponding to the charging operation of at least one adjustment charging station to a specific power parameter value, wherein the sum of the power parameter values reduced by at least one adjustment charging station is equal to the reserved power parameter value.

A charging schedule management system for an electric vehicle charging station of an embodiment of the present invention is applicable to a charging field. The system includes a plurality of electric vehicle charging stations and a server. Each electric vehicle charging station has a network connection capability and is connected to the server through a network. The server includes at least one energy management scheme, wherein the energy management scheme records a power distribution logic for controlling a corresponding charging operation of each of the electric vehicle charging stations. The server obtains a usage status of each electric vehicle charging station through the network, wherein the usage status indicates whether each electric vehicle charging station is in an operating state or a standby state, and executes an energy management plan to determine a corresponding target power parameter value for the charging operation of each of a plurality of first electric vehicle charging stations whose usage status is an operating state among the electric vehicle charging stations, and executes the charging operation according to the corresponding target power parameter value through the individual first electric vehicle charging stations, wherein each first electric vehicle charging station outputs power to at least one coupled electric vehicle according to the target power parameter value. The server detects that the use status of at least one second electric vehicle charging station in the electric vehicle charging station is in standby mode, and determines whether a remaining power in the charging field is lower than an output power upper limit value of the second electric vehicle charging station, and when the remaining power is lower than the output power upper limit value of the second electric vehicle charging station, a load reservation operation is performed. In the load reservation operation, the server calculates a reserved power parameter value, and selects at least one adjustment charging station from the first electric vehicle charging station in sequence according to a predetermined parameter and corresponds to the reserved power parameter value, and reduces the target power parameter value corresponding to the charging operation of at least one adjustment charging station to a specific power parameter value, wherein the sum of the power parameter values reduced by at least one adjustment charging station is equal to the reserved power parameter value.

In some embodiments, the server receives a first charging demand corresponding to a first electric vehicle from a second electric vehicle charging station or a first mobile device, and corresponding to the first charging demand, the server sets the target power parameter value of the second electric vehicle charging station to the reserved power parameter value and transmits the target power parameter value to the second electric vehicle charging station through the network. The second electric vehicle charging station outputs power to the first electric vehicle according to the target power parameter value to perform the corresponding charging operation.

In some embodiments, the server further executes an energy management scheme when detecting that the use status of the second electric vehicle charging station has changed to an operating status, so as to adjust the target power parameter value of the second electric vehicle charging station and the target power parameter value corresponding to the charging operation of each first electric vehicle charging station, and each first electric vehicle charging station and the second electric vehicle charging station respectively execute corresponding charging operations according to the adjusted target power parameter value, wherein the sum of the adjusted target power parameter value of the second electric vehicle charging station and the adjusted target power parameter value of each first electric vehicle charging station is not higher than the power limit of the corresponding charging field.

In some embodiments, the reserved power parameter value is set to the lower limit value of the output power of one of the second electric vehicle charging stations.

In some embodiments, at least one adjustment charging station includes a first adjustment charging station and a second adjustment charging station, and the server further selects a first charging station from the first electric vehicle charging station as a first adjustment charging station according to a predetermined parameter during a first predetermined period, records the target power parameter value corresponding to the charging operation of the first charging station as a reference power parameter value, and reduces the target power parameter value to provide a reserved power parameter value. Thereafter, the server further adjusts the target power parameter value corresponding to the charging operation of the first charging station back to the reference power parameter value during a second predetermined period, and selects a second charging station from the first electric vehicle charging station as a second adjustment charging station according to a predetermined parameter, and reduces the target power parameter value corresponding to the charging operation of the second charging station to provide a reserved power parameter value.

In some embodiments, at least one adjustment charging station includes a first adjustment charging station and a second adjustment charging station, and the server further selects a first charging station and a second charging station from the first electric vehicle charging station as the first adjustment charging station and the second adjustment charging station according to a predetermined parameter during a first predetermined period, and respectively reduces the target power parameter value corresponding to the charging operation of the first charging station to a first power parameter value and reduces the target power parameter value corresponding to the charging operation of the second charging station to a second power parameter value, wherein the sum of the power parameter values reduced by the first charging station and the second charging station is equal to the reserved power parameter value.

In some embodiments, the predetermined parameters include at least one of a user priority parameter, a charging progress parameter, and a charging station parameter.

In some embodiments, the server further obtains identification data of a specific charging station in the corresponding first electric vehicle charging station through the network and determines whether the identification data of the corresponding specific charging station meets an exclusion condition. When the identification data of the corresponding specific charging station meets the exclusion condition, the specific charging station is not selected as the adjustment charging station.

In some embodiments, the server further calculates the remaining power of the charging site based on the power limit of the charging site and the target power parameter values of all first electric vehicle charging stations.

The above method of the present invention can exist in the form of program code. When the program code is loaded and executed by a machine, the machine becomes a device for implementing the present invention.

In order to make the above-mentioned purposes, features and advantages of the present invention more clearly understood, the following is a detailed description of the embodiments with accompanying diagrams.

100: Charging schedule management system for electric vehicle charging stations

110: Charging area

112: The first electric vehicle charging station

114: Second electric vehicle charging station

116: The third electric vehicle charging station

EV1, EV2: Electric vehicles

120: Internet

130: Server

132: Storage unit

EMP: Energy Management Program

134: Network connection unit

136: Processor

200: Electric vehicle charging station

212: Storage unit

214: Network connection unit

216: Rechargeable gun

218: Processing unit

220: Card reading unit

S410, S420, S430, S440, S450, S460: Steps

S510, S520: Steps

S610, S620, S630: Steps

S710, S720: Steps

S810, S820, S830, S840, S850: Steps

S910, S920: Steps

S1010, S1020, S1030, S1040: Steps

Figure 1 is a schematic diagram showing a charging schedule management system for an electric vehicle charging station according to an embodiment of the present invention.

Figure 2 is a schematic diagram showing an electric vehicle charging station according to an embodiment of the present invention.

Figure 3 is a schematic diagram showing a server according to an embodiment of the present invention.

Figure 4 is a flow chart showing the charging schedule management method of an electric vehicle charging station according to an embodiment of the present invention.

Figure 5 is a flow chart showing the load retention operation according to an embodiment of the present invention.

Figure 6 is a flow chart showing a charging schedule management method for an electric vehicle charging station according to another embodiment of the present invention.

Figure 7 is a flow chart showing a charging schedule management method for an electric vehicle charging station according to another embodiment of the present invention.

Figure 8 is a flow chart showing the execution method of the load retention operation according to the embodiment of the present invention.

Figure 9 is a flow chart showing the execution method of the load retention operation according to another embodiment of the present invention.

Figure 10 is a flow chart showing the execution method of the load retention operation according to another embodiment of the present invention.

FIG. 1 shows a charging schedule management system for an electric vehicle charging station according to an embodiment of the present invention. The charging schedule management system 100 for an electric vehicle charging station according to an embodiment of the present invention is applicable to a charging field 110 including a plurality of electric vehicle charging stations. It is noted that the charging field 110 has a power limit. As shown in FIG. 1, the charging schedule management system 100 for an electric vehicle charging station according to an embodiment of the present invention includes a plurality of electric vehicle charging stations, such as a first electric vehicle charging station 112, a second electric vehicle charging station 114, a third electric vehicle charging station 116, and a server 130 connected to the first electric vehicle charging station 112, the second electric vehicle charging station 114, and the third electric vehicle charging station 116 through a network 120, respectively. Individual electric vehicle charging stations can provide electric vehicles (EV1, EV2) of electric vehicle users with a charging operation. In some embodiments, the network 120 can be a wired network, a telecommunications network, and a wireless network, such as a Wi-Fi network. The server 130 can receive various data from the first electric vehicle charging station 112, the second electric vehicle charging station 114, and the third electric vehicle charging station 116 through the network 120, and transmit relevant signals to the first electric vehicle charging station 112, the second electric vehicle charging station 114, and the third electric vehicle charging station 116. The first electric vehicle charging station 112, the second electric vehicle charging station 114, and the third electric vehicle charging station 116 can perform relevant operations based on the signals received by the server 130. For example, when the electric vehicle EV1 is coupled to the first electric vehicle charging station 112 through a charging gun of the first electric vehicle charging station 112 to perform a charging operation, the first electric vehicle charging station 112 can continuously transmit the charging information of the charging operation of the corresponding electric vehicle EV1 through the network 120, and the server 130 can receive the charging information of the corresponding charging operation from the first electric vehicle charging station 112 through the network 120. Similarly, when the electric vehicle EV2 is coupled to the second electric vehicle charging station 114 through a charging gun of the second electric vehicle charging station 114 to perform a charging operation, the second electric vehicle charging station 114 can continuously transmit the charging information of the corresponding charging operation of the electric vehicle EV2 through the network 120, and the server 130 can receive the charging information of the corresponding charging operation from the second electric vehicle charging station 114 through the network 120. When a specific electric vehicle is coupled to the third electric vehicle charging station 116 through a charging gun of the third electric vehicle charging station 116 to perform a charging operation, the third electric vehicle charging station 116 can continuously transmit the charging information of the charging operation of the corresponding specific electric vehicle through the network 120, and the server 130 can receive the charging information of the corresponding charging operation from the third electric vehicle charging station 116 through the network 120. In some embodiments, the server 130 can also receive corresponding usage status information from the first electric vehicle charging station 112, the second electric vehicle charging station 114 and the third electric vehicle charging station 116 through the network 120. The usage status indicates whether each charging station is in an operating state or a standby state. In this embodiment, the first electric vehicle charging station 112 is coupled to the electric vehicle EV1 to perform a first charging operation and the second electric vehicle charging station 114 is coupled to the electric vehicle EV2 to perform a second charging operation, so the use status of the first electric vehicle charging station 112 and the second electric vehicle charging station 114 is in an operating state; and the third electric vehicle charging station 116 has not been coupled to any electric vehicle and has not performed a charging operation, so the use status of the third electric vehicle charging station 116 is in a standby state. It is noted that the above data is only for this case, and the present invention is not limited thereto.

It is worth noting that the user can connect the electric vehicle EV1 to the first electric vehicle charging station 112, such as inserting a charging gun into the charging port of the electric vehicle to send a charging request corresponding to the first electric vehicle charging station 112, so as to use the first electric vehicle charging station 112 to charge the electric vehicle EV1. Similarly, the user can connect the electric vehicle EV2 to the second electric vehicle charging station 114, such as inserting a charging gun into the charging port of the electric vehicle to send a charging request corresponding to the second electric vehicle charging station 114, so as to use the second electric vehicle charging station 114 to charge the electric vehicle EV2. Similarly, the user can connect the specific electric vehicle to the third electric vehicle charging station 116, such as inserting a charging gun into the charging port of the electric vehicle to send a charging request corresponding to the third electric vehicle charging station 116, so as to use the third electric vehicle charging station 116 to charge the specific electric vehicle. It is worth noting that in some embodiments, the server 130 can directly or indirectly receive a charging request from a mobile device (not shown in Figure 1) of the owner of the corresponding electric vehicle EV1, generate a charging authorization instruction based on the charging request, and transmit it to the first electric vehicle charging station 112 through the network 120, so that the first electric vehicle charging station 112 outputs power to one of the electric vehicles EV1 electrically connected thereto, such as an electric motorcycle or an electric car, or prohibits the first electric vehicle charging station 112 from outputting power to the electric vehicle EV1. It is noted that in some implementations, a charging request may be accompanied by an identity authentication and/or a payment mechanism, and a charging authorization instruction may be generated only after the identity authentication and/or payment mechanism is completed. In some implementations, a user of the electric vehicle EV1 may download and install an application using his mobile device to generate a charging request through the user interface of the application. In some implementations, a user may scan a quick response code (QR code) on the first electric vehicle charging station 112 using the scanning function of the application to generate the above-mentioned charging request, thereby starting a charging procedure. In some implementations, a user may select a specific charging station through the application and execute a start function to generate the above-mentioned charging request, thereby starting a charging procedure. It is worth noting that in some embodiments, the owner of the electric vehicle EV1 can use an RFID sensing card to approach a sensing area (not shown in Figure 1) on the first electric vehicle charging station 112 to generate a corresponding charging request and transmit it to the server 130 via the network 120. It is noted that in some embodiments, each user can have an RFID sensing card.

It is noted that the device of the electric vehicle owner can be any electronic device with Internet access, such as a mobile device, such as a mobile phone, a smart phone, a personal digital assistant, a global positioning system, and a laptop. In some embodiments, the mobile device can receive status information and notifications of the corresponding charging operation from the cloud management server 130 via the network 120. In some embodiments, the status information and notifications can include notification that the electric vehicle has stopped charging, notification that the vehicle is being moved, and/or notification that the charging gun of the electric vehicle charging device has been removed from the electric vehicle, etc.

As previously mentioned, the charging site 110 has a power limit. The server 130 can perform a load adjustment operation on the electric vehicle charging station of the charging site 110 according to at least one energy management scheme. Specifically, the server 130 can generate instructions and transmit the instructions to the electric vehicle charging station (112, 114, 116) through the network 120 to control the electric vehicle charging station to output power to the electric vehicle connected to the charging station at a specific time period with a specified power parameter, such as a specified ampere, or prohibit the electric vehicle charging station from outputting power to the electric vehicle. It is worth noting that in some embodiments, when the server 130 receives charging requests from the charging station, it can perform a charging scheduling operation for these charging requests. In some embodiments, the charging scheduling operation can be performed in conjunction with a time electricity price. For example, when an electric vehicle and a charging station are connected to each other, such as inserting a charging gun into the charging port of the electric vehicle, the corresponding charging operation will not be executed immediately. The server will schedule charging according to the time electricity price, the power limit of the field, and the electric vehicle that needs to be charged, select the appropriate charging time point, and execute all charging operations in a manner with the lowest electricity cost. On the other hand, the server 130 can also execute the load reservation operation of this case for the electric vehicle charging station of the charging field 110. The details of the load reservation operation will be explained later.

FIG. 2 shows an electric vehicle charging station according to an embodiment of the present invention. The electric vehicle charging station 200 shown in FIG. 2 can be applied to the first electric vehicle charging station 112, the second electric vehicle charging station 114 and the third electric vehicle charging station 116 in FIG. 1, and has processing computing capabilities to perform charging management operations belonging to the electric vehicle charging station, and has a network connection function to transmit, receive, download or update various parameters and information required for charging management operations.

The electric vehicle charging station 200 at least includes a storage unit 212, a network connection unit 214, a charging gun 216, a processing unit 218, and a card reading unit 220. The storage unit 212 can be a memory for storing and recording relevant data, such as the electric vehicle charging station information contained in the electric vehicle charging station, such as the charging station identification code, charging request information, etc. It should be noted that the aforementioned data is only an example of this case, and the present invention is not limited thereto. The network connection unit 214 can transmit, receive, download or update various parameters and information required for charging management calculations through a network, such as a wired network, a telecommunications network, and a wireless network, such as a Wi-Fi network. The charging gun 216 may include one or more charging connectors that conform to the same charging interface specification or conform to different charging interface specifications, which are electrically connected to the corresponding electric vehicle. The processing unit 218 can control the operation of the relevant software and hardware in the electric vehicle charging station 200, and cooperate with the server 130 to execute the charging schedule management method of the electric vehicle charging station of this case. The relevant details will be explained later. It is worth noting that in some embodiments, the processing unit 218 can be a general controller, a microcontroller (Micro-Control Unit, MCU), or a digital signal controller (Digital Signal Processor, DSP), etc., to provide data analysis, processing and calculation functions, but the present invention is not limited to this. In some embodiments, the processing unit 218 can transmit the power state and/or usage state of the corresponding electric vehicle through a network using the network connection unit 214, so as to provide a cloud management server, such as the server 130, with subsequent charging management. The usage state is used to indicate whether the electric vehicle charging station 200 is in an operating state or a standby state. In another embodiment, the processing unit 218 can obtain the power parameters of a corresponding charging operation through the server 130, and determine the output power according to the power parameters received from the server 130, and output the power to at least one electric vehicle through the charging gun 216 to perform the charging operation. The card reading unit 220 can be an RFID reading unit for sensing a physical sensing card, such as information of an RFID card, such as a card identification code of the corresponding physical sensing card.

It should be noted that the electric vehicle charging station 200 has an output power upper limit value and an output power lower limit value. Specifically, the electric vehicle charging station 200 can use this output power upper limit value as a power parameter at most to output power to the electric vehicle in a charging operation. On the other hand, the electric vehicle charging station 200 must use this output power lower limit value as a power parameter at least to output power to the electric vehicle in a charging operation. It should be noted that charging stations of different brands and models may have different output power upper limits and output power lower limits. The present invention is not limited to any value, and the value may vary for different charging stations.

FIG. 3 shows a server according to an embodiment of the present invention. As shown in FIG. 3, the server 130 according to the embodiment of the present invention can be any processor-based electronic device, which at least includes a storage unit 132, a network connection unit 134, and a processor 136. It is worth noting that the server 130 can receive various data corresponding to a plurality of electric vehicle charging stations in the charging field. The server 130 can directly or indirectly receive a charging request from an electric vehicle charging station or a mobile device, and after performing relevant authentication and other actions according to the charging request, generate a charging authorization instruction and transmit it to the corresponding electric vehicle charging station through the network to allow the corresponding electric vehicle charging station to output power to an electric vehicle connected to it, such as an electric motorcycle or electric car, or prohibit the electric vehicle charging station from outputting power to the electric vehicle.

The storage unit 132, such as a memory, can store and record relevant data, such as various data of the corresponding electric vehicle charging station. It is noted that the storage unit 132 may include at least one energy management scheme EMP. The energy management scheme EMP records a distribution logic for controlling a charging operation corresponding to each of the electric vehicle charging stations. It is noted that the distribution logic is used to configure the execution sequence of individual charging demands (charging operations) in the corresponding different charging stations under the power limit of the charging field, and the corresponding target power parameter value when executing the charging demand. It is worth noting that in some embodiments, the storage unit 132 may include a time setting table for setting at least one peak time period and an off-peak time period, and a corresponding time electricity price. In some embodiments, the storage unit 132 may include charging parameters received by the electric vehicle charging station or the mobile device. Through the network connection unit 134, the server 130 can be coupled and communicated with the electric vehicle charging stations 112, 114 and 116 through the network 120, such as a wired network, a telecommunications network, and a wireless network, such as a Wi-Fi network, and transmit relevant data/signals/commands to different electric vehicle charging stations through the network 120 to control whether the electric vehicle charging station outputs electricity and specifies the power parameters to output electricity to charge the electric vehicle. The processor 136 can control the operations of the relevant software and hardware in the server 130, and execute the charging schedule management method of the electric vehicle charging station in this case. The relevant details will be explained later. It is reminded that when the server has multiple energy management schemes EMP, the processor 136 can select one from the energy management schemes EMP and perform a load adjustment operation for the charging field according to the selected energy management scheme EMP. It is worth noting that in some embodiments, the processor 136 can be a general controller, a microcontroller, or a digital signal controller, etc., to provide data analysis, processing and calculation functions, but the present invention is not limited to this. It is reminded that, as mentioned above, the server can execute a charging scheduling operation for the charging request of the corresponding electric vehicle charging station. In some embodiments, the charging scheduling operation can be performed in conjunction with a time electricity price, so that all charging operations are performed at the lowest electricity cost. The server can also perform energy management, such as charging scheduling operations, based on the charging parameters of each electric vehicle.

FIG. 4 shows a charging schedule management method for an electric vehicle charging station according to an embodiment of the present invention. The charging schedule management method for an electric vehicle charging station according to an embodiment of the present invention is applicable to a charging field. The charging field includes a plurality of electric vehicle charging stations and has a power limit. Individual electric vehicle charging stations can be electrically coupled to a remote server via a network.

First, as in step S410, at least one energy management solution is provided on the server. As mentioned above, the energy management solution can record a power distribution logic to control a charging operation corresponding to each of the electric vehicle charging stations. It is reminded that the power distribution logic is configured to determine the execution order of individual charging demands in the charging demands (charging operations) of different charging stations under the power constraints of the charging field, and the target power parameter values corresponding to the execution of the charging demands. As in step S420, the server obtains a usage status of each electric vehicle charging station through the network. Among them, the usage status indicates whether each electric vehicle charging station is in an operating state or a standby state. In other words, the usage status of each electric vehicle charging station can be used to know whether the electric vehicle charging station has been used. In some embodiments, the server can communicate with each electric vehicle charging station through the network, thereby obtaining the use status of each electric vehicle charging station through the network. Then, as in step S430, the server executes an energy management scheme to determine a corresponding target power parameter value for the charging operation of each of the plurality of first electric vehicle charging stations in the electric vehicle charging station, and executes the charging operation according to the corresponding target power parameter value through the individual first electric vehicle charging station, wherein the use status of each first electric vehicle charging station is an operating state. It is noted that the individual first electric vehicle charging station can output power to at least one coupled electric vehicle according to the target power parameter value. For example, in the example shown in FIG. 1, the first electric vehicle charging station 112 is coupled to the electric vehicle EV1 to perform a first charging operation and the second electric vehicle charging station 114 is coupled to the electric vehicle EV2 to perform a second charging operation, so the use status of the first electric vehicle charging station 112 and the second electric vehicle charging station 114 is in an operating state. In other words, the first electric vehicle charging station here includes the first electric vehicle charging station 112 and the second electric vehicle charging station 114. Then, as in step S440, the server detects that the use status of at least one second electric vehicle charging station in the electric vehicle charging station is a standby state, and as in step S450, it is determined whether a remaining power of the charging field is lower than an output power upper limit value of the second electric vehicle charging station. For example, in the example shown in FIG. 1, the third electric vehicle charging station 116 has not been coupled to any electric vehicle and has not performed a charging operation, so the use state of the third electric vehicle charging station 116 is in a standby state. In other words, the second electric vehicle charging station here at least includes the third electric vehicle charging station 116. As mentioned above, the second electric vehicle charging station has an output power upper limit value and an output power lower limit value. It is noted that the output power upper limit value and the output power lower limit value of the first electric vehicle charging station and the second electric vehicle charging station may be different. In some embodiments, the server can calculate the remaining power of the charging field based on the power limit of the charging field and the target power parameter values of all the first electric vehicle charging stations. When the remaining power is not lower than the output power upper limit of the second electric vehicle charging station (No in step S450), the process ends. When the remaining power is lower than the output power upper limit of the second electric vehicle charging station (Yes in step S450), as in step S460, the server executes a load reservation operation. It is reminded that the main purpose of the load reservation operation is to reserve enough power for subsequent charging operations. In other words, through the load reservation operation, it can be ensured that the subsequent charging operation of any electric vehicle charging station in the corresponding standby state can be carried out smoothly. The load reservation operation will be explained later.

Figure 5 shows a load reservation operation according to an embodiment of the present invention. In the load reservation operation, such as step S510, the server calculates a reserved power parameter value. It is reminded that the reserved power parameter value is the minimum power parameter value corresponding to a specific electric vehicle charging station for starting the charging operation, and the server can calculate this reserved power parameter value based on the minimum power parameter value corresponding to the specific electric vehicle charging station. As mentioned above, the second electric vehicle charging station has an output power upper limit value and an output power lower limit value. It is worth noting that in some embodiments, the reserved power parameter value is the output power lower limit value of the specific electric vehicle charging station. It is reminded that the output power upper limit value and the output power lower limit value of different electric vehicle charging stations may be different. In some embodiments, the server may store a predetermined power parameter value in a storage unit in advance, and the server may retrieve the predetermined power parameter value from the storage unit as a reserved power parameter value. Then, as in step S520, the server sequentially selects at least one adjustment charging station from the first electric vehicle charging station according to a predetermined parameter and corresponding to the reserved power parameter value, and reduces the target power parameter value corresponding to the charging operation of the at least one adjustment charging station to a specific power parameter value, wherein the sum of the power parameter values reduced by the at least one adjustment charging station is equal to the reserved power parameter value. In one embodiment, the predetermined parameters include a user priority parameter, wherein the user priority parameter of a specific electric vehicle charging station is used to indicate a user identification data of an electric vehicle coupled to the corresponding specific electric vehicle charging station, such as identity level, whether the user is a member, and member level, and the server can select at least one adjustment charging station from all first electric vehicle charging stations in sequence according to the user priority parameter, such as member level. In another embodiment, the predetermined parameters include a charging progress parameter, wherein the charging progress parameter of a specific electric vehicle charging station is used to indicate the charging progress of the specific electric vehicle charging station, such as remaining charging time, remaining charging power, and the server can select at least one adjustment charging station from all first electric vehicle charging stations in sequence according to the charging progress parameter, such as the length of the remaining charging time. In another embodiment, the predetermined parameters include a charging station parameter, wherein the charging station parameter of a specific electric vehicle charging station is used to indicate relevant information of the specific electric vehicle charging station, such as a charging station identification code, a maximum output power of the charging station, a fast charging mode or a slow charging mode, and the server can select at least one adjustment charging station from all first electric vehicle charging stations in sequence according to the charging station parameters such as the charging station identification code, the maximum output power of the charging station, a fast charging mode or a slow charging mode. In some embodiments, the predetermined parameters include at least one of a user priority parameter, a charging progress parameter, and a charging station parameter, or a combination thereof. It should be noted that the aforementioned data is only an example of this case, and the present invention is not limited thereto. In some embodiments, when the first electric vehicle charging station includes a first charging station, a second charging station, and a third charging station, the server sequentially selects at least one adjustment charging station from all the first electric vehicle charging stations according to a predetermined parameter, and sorts the first charging station, the second charging station, and the third charging station according to the predetermined parameter, and then selects one or more of the three charging stations in turn as the adjustment charging station that needs to be adjusted in power according to the sorting result. It is worth noting that the server can adjust the target power parameter value of one or more adjustment charging stations to perform the load reservation operation. As mentioned above, the main purpose of the load reservation operation is to reserve enough power for subsequent charging operations. The server can sort all the first electric vehicle charging stations in operation according to the given parameters, and then select one or more of them in turn according to the ranking values of individual first electric vehicle charging stations to adjust the power to provide the reserved power parameter values required for the load reservation operation. In other words, the reserved power parameter values required for the load reservation operation will be provided by multiple electric vehicle charging stations in operation in turn, so it will not significantly affect the charging operation progress of individual electric vehicle charging stations, and at the same time, it will not lose fairness.

FIG. 6 shows a charging schedule management method for an electric vehicle charging station according to another embodiment of the present invention. In this embodiment, the server can use the reserved power parameter value to perform the corresponding charging operation when receiving a new charging demand from the corresponding second electric vehicle charging station.

First, as in step S610, the server receives a first charging demand corresponding to a first electric vehicle from a second electric vehicle charging station or a first mobile device. It is noted that the first mobile device may be owned by the owner of the first electric vehicle. At the same time, a first charging parameter corresponding to the first charging demand may be obtained. Then, as in step S620, corresponding to the first charging demand, the server sets the target power parameter value of the second electric vehicle charging station to the reserved power parameter value and transmits the target power parameter value to the second electric vehicle charging station via the network. Thereafter, as in step S630, the second electric vehicle charging station outputs power to the first electric vehicle according to the target power parameter value to perform the corresponding charging operation.

FIG. 7 shows a charging schedule management method for an electric vehicle charging station according to another embodiment of the present invention. The charging schedule management method for an electric vehicle charging station according to the embodiment of the present invention is applicable to a charging field. The charging field includes a plurality of electric vehicle charging stations and has a power limit. Individual electric vehicle charging stations can be electrically coupled to a remote server through a network. In this embodiment, the server can execute the energy management scheme again when it detects that the corresponding second electric vehicle charging station is performing a new charging operation to readjust the target power parameter value of the individual electric vehicle charging station.

First, as in step S710, the server detects that the use state of the second electric vehicle charging station has changed to the operating state and executes the energy management plan to adjust the target power parameter value of the second electric vehicle charging station and the target power parameter value corresponding to the charging operation of each first electric vehicle charging station. As mentioned above, the energy management plan can record a distribution logic for controlling a charging operation corresponding to each of the electric vehicle charging stations. It is reminded that the distribution logic is configured to determine the execution order of individual charging demands in the charging demands (charging operations) corresponding to different charging stations under the power limit of the charging field, and the target power parameter value corresponding to the execution of the charging demand. In some embodiments, the server may increase the target power parameter value of the second electric vehicle charging station from the original lower reserved power parameter value to a specific power parameter value, and at the same time, the target power parameter values of some or all of the first electric vehicle charging stations are correspondingly lowered according to the adjustment range. Thereafter, as in step S720, each of the first electric vehicle charging station and the second electric vehicle charging station respectively performs corresponding charging operations according to the adjusted target power parameter value. Among them, the sum of the adjusted target power parameter value of the second electric vehicle charging station and the adjusted target power parameter value of each first electric vehicle charging station is not higher than the power limit of the corresponding charging field. For example, when the total of the number of electric vehicle charging stations that need to perform charging operations multiplied by the target power parameter value of each electric vehicle charging station is greater than the power limit of the charging site, the power output (target power parameter value) of each corresponding electric vehicle charging station will be reduced so that the total will not exceed the power limit of the charging site.

FIG. 8 shows a method for executing a load reservation operation according to an embodiment of the present invention. In this embodiment, the adjustment charging station may include at least a first adjustment charging station and a second adjustment charging station, and the server may perform the load reservation operation by taking turns through the first adjustment charging station and the second adjustment charging station.

As in step S810, the server selects a first charging station from the first electric vehicle charging stations as a first adjustment charging station according to the predetermined parameters during a first predetermined period, and as in step S820, records the target power parameter value corresponding to the charging operation of the first charging station as a reference power parameter value. Then, as in step S830, the server reduces the target power parameter value corresponding to the charging operation of the first charging station to provide a reserved power parameter value. In other words, the target power parameter value corresponding to the charging operation of the first charging station will be adjusted to the current value minus the reserved power parameter value. It is noted that during the first predetermined period, the first charging station can output power to the first electric vehicle according to the adjusted target power parameter value to perform the corresponding charging operation. As in step S840, during a second predetermined period after the first predetermined period, the server adjusts the target power parameter value corresponding to the charging operation of the first charging station back to the reference power parameter value, and selects a second charging station from the first electric vehicle charging station as the second adjustment charging station according to the predetermined parameters. It is noted that when the power parameter at the beginning of the charging operation is higher than any value of the output power lower limit value, step S830 indicates that the power parameter is adjusted back from the specific output power value to this any value. Thereafter, as in step S850, the server lowers the target power parameter value corresponding to the charging operation of the second charging station to provide a reserved power parameter value. In other words, the target power parameter value corresponding to the charging operation of the second charging station will be adjusted to the current value minus the reserved power parameter value. Note that, during the second predetermined period, the second charging station can output power to a second electric vehicle according to the adjusted target power parameter value to perform the corresponding charging operation. For example, when the predetermined parameter is set to a remaining charging time, the reserved power parameter value is set to 8 amperes (A), and the first electric vehicle charging station includes a first charging station with a remaining charging time of 2 hours and a target power parameter value of 16 amperes and a second charging station with a remaining charging time of 1 hour and a target power parameter value of 16 amperes, the server can first select the first charging station with a longer time length as the first charging station according to the length of the remaining charging time. The adjustment charging station and the second charging station with a shorter time length are the second adjustment charging station. After that, at a predetermined time interval (for example, 10 minutes or half an hour), the target power parameter value of the first charging station is first adjusted from 16 amperes to 8 amperes, and then the target power parameter value of the first charging station is adjusted back from 8 amperes to 16 amperes and the target power parameter value of the second charging station is adjusted from 16 amperes to 8 amperes, and then adjusted back to 16 amperes after a predetermined time, and so on. It should be noted that the above data is only for this case, and the present invention is not limited to this.

FIG. 9 shows a method for executing a load reservation operation according to another embodiment of the present invention. In this embodiment, the adjustment charging station may include at least a first adjustment charging station and a second adjustment charging station, and the server may perform a load reservation operation through the first adjustment charging station and the second adjustment charging station at the same time.

First, as in step S910, the server selects a first charging station and a second charging station from the first electric vehicle charging station as the first adjustment charging station and the second adjustment charging station according to the predetermined parameters during the first predetermined period. Then, as in step S920, the server respectively reduces the target power parameter value corresponding to the charging operation of the first charging station to a first power parameter value and reduces the target power parameter value corresponding to the charging operation of the second charging station to a second power parameter value, wherein the sum of the power parameter values reduced by the first charging station and the second charging station is equal to the reserved power parameter value. For example, when the predetermined parameter is set to a remaining charging time, the reserved power parameter value is set to 8 amperes (A), and the first electric vehicle charging station includes the first charging station and the second charging station with a remaining charging time of less than 2 hours and a second charging station with a target power parameter value of 16 amperes, and the third charging station and the fourth charging station with a remaining charging time of less than 1 hour and a target power parameter value of 16 amperes, the server can first select the first charging station and the second charging station with a longer time length as the first (group) of adjusted charging according to the length of the remaining charging time. The first charging station and the third and fourth charging stations with shorter time are the second (group) adjustment charging stations. After that, the target power parameter values of the first and second charging stations are simultaneously reduced from 16 amperes to 12 amperes at a predetermined time interval (for example, 10 minutes or half an hour). After a predetermined time, the target power parameter values of the first and second charging stations are adjusted back to 16 amperes from 8 amperes and the target power parameter values of the third and fourth charging stations are reduced from 16 amperes to 12 amperes. After a predetermined time, they are adjusted back to 16 amperes, and so on. It should be noted that the above data is only for this case, and the present invention is not limited to this.

FIG. 10 shows a method for executing a load reservation operation according to another embodiment of the present invention. In this embodiment, the server can further determine whether to select a specific charging station in the first electric vehicle charging station as an adjustment charging station.

As in step S1010, the server obtains identification data of a specific charging station in the corresponding first electric vehicle charging station through the network, and as in step S1020, determines whether the identification data of the corresponding specific charging station meets an exclusion condition. It should be noted that the server may define one or more exclusion conditions for the identification data of the corresponding specific charging station in advance, and determine whether the exclusion condition is met based on the identification data of the specific charging station. Among them, the exclusion condition is used to indicate a condition that can be excluded from the power adjustment of the load retention operation. In some embodiments, the identification data of the corresponding specific charging station may include at least one of a user priority parameter, a charging progress parameter, and a charging station parameter, or a combination thereof. For the description of the relevant parameters, please refer to the description of Figure 5, and the details are not repeated here. It should be noted that the aforementioned data is only an example of this case, and the present invention is not limited thereto. When the identification data of the corresponding specific charging station meets the exclusion condition (Yes in step S1020), as in step S1030, the specific charging station is not selected as an adjustment charging station and is noted. When the identification data of the corresponding specific charging station does not meet the exclusion condition (No in step S1020), as in step S1040, the specific charging station is selected as an adjustment charging station. It is reminded that when the identification data of the corresponding specific charging station meets the exclusion condition, the corresponding specific charging station and its charging operation will be noted to exclude the selection of the adjustment charging station in future load retention operations. Please note that when the charging operation is completed, the note of the corresponding specific charging station can be removed. For example, in one embodiment, the identification data of the specific charging station may include a user priority parameter and the exclusion condition is a highest level member, wherein the user priority parameter of the corresponding specific charging station is used to indicate the identity identification data of a user of an electric vehicle coupled to the corresponding specific charging station, such as identity level, whether a member and member level, and the server can determine whether the member level of the user of the corresponding specific charging station indicates a highest level member, and when the user's member level indicates a highest level member, it is determined that the exclusion condition is met, so the specific charging station will be noted and excluded from the selection of charging stations for adjusting the future load retention operation. It is noted that the aforementioned data is only for this case, and the present invention is not limited to this.

Therefore, through the charging schedule management method and system of the electric vehicle charging station of this case, a flexible charging schedule can be provided according to the use status of individual electric vehicle charging stations in the charging field to perform electric vehicle charging management operations, and power can be dynamically allocated according to the use status of the electric vehicle charging station in a timely manner, further increasing the flexibility of load adjustment operations and/or charging scheduling in individual charging fields, thereby fully utilizing the field power while avoiding the situation where the rear vehicles cannot charge smoothly during the load operation.

The method of the present invention, or a specific form or part thereof, may exist in the form of program code. The program code may be contained in a physical medium, such as a floppy disk, an optical disk, a hard disk, or any other machine-readable (such as computer-readable) storage medium, or a computer program product that is not limited to an external form, wherein when the program code is loaded and executed by a machine, such as a computer, the machine becomes an apparatus for participating in the present invention. The program code may also be transmitted through some transmission medium, such as wires or cables, optical fibers, or any transmission type, wherein when the program code is received, loaded and executed by a machine, such as a computer, the machine becomes an apparatus for participating in the present invention. When implemented on a general-purpose processing unit, the code combines with the processing unit to provide a unique device that operates like an application-specific logic circuit.

Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this technology can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of the patent application attached hereto.

S410, S420, S430, S440, S450, S460: Steps

Claims (10)

A charging schedule management method for an electric vehicle charging station is applicable to a charging field, wherein the charging field has a power limit and includes a plurality of electric vehicle charging stations, and the electric vehicle charging stations are connected to a server through a network, comprising the following steps: providing at least one energy management scheme on the server, wherein the energy management scheme records a power distribution logic for controlling a charging operation corresponding to each of the electric vehicle charging stations; the server obtains each of the electric vehicle charging stations through the network; A usage status of the electric vehicle charging station, wherein the usage status indicates whether each of the electric vehicle charging stations is in an operating state or a standby state; the server executes the energy management scheme to determine a corresponding target power parameter value for the charging operation of each of the plurality of first electric vehicle charging stations in the electric vehicle charging stations, and executes the charging operation according to the corresponding target power parameter value through the individual first electric vehicle charging stations, wherein each of the first electric vehicle charging stations The use state of the charging station is the operating state and outputs power to at least one coupled electric vehicle according to the target power parameter value; the server detects that the use state of at least one second electric vehicle charging station among the electric vehicle charging stations is the standby state; determines whether a remaining power of the charging field is lower than an output power upper limit value of the second electric vehicle charging station; and when the remaining power is lower than the output power upper limit value of the second electric vehicle charging station, the server executes a load reservation Operation, wherein the load reservation operation includes the following steps: the server calculates a reserved power parameter value; and corresponding to the reserved power parameter value, the server sequentially selects at least one adjustment charging station from the first electric vehicle charging stations according to a predetermined parameter and reduces the target power parameter value corresponding to the charging operation of the at least one adjustment charging station to a specific power parameter value, wherein the sum of the power parameter values reduced by the at least one adjustment charging station is equal to the reserved power parameter value. The charging schedule management method of an electric vehicle charging station as described in Item 1 of the patent application scope further includes the following steps: the second electric vehicle charging station or a first mobile device receives a first charging demand corresponding to a first electric vehicle; corresponding to the first charging demand, the server sets the target power parameter value of the second electric vehicle charging station to the reserved power parameter value and transmits the target power parameter value to the second electric vehicle charging station through the network; and the second electric vehicle charging station outputs power to the first electric vehicle according to the target power parameter value to perform the corresponding charging operation. The charging schedule management method for an electric vehicle charging station as described in item 2 of the patent application scope further includes the following steps: the server detects that the use state of the second electric vehicle charging station changes to the operating state; and the server executes the energy management plan to adjust the target power parameter value of the second electric vehicle charging station and the target power parameter value corresponding to the charging operation of each of the first electric vehicle charging stations; and each of the first electric vehicle charging stations and the second electric vehicle charging station respectively execute the corresponding charging operation according to the adjusted target power parameter value, wherein the sum of the adjusted target power parameter value of the second electric vehicle charging station and the adjusted target power parameter value of each of the first electric vehicle charging stations is not higher than the power limit corresponding to the charging field. As described in item 1 of the patent application scope, the charging schedule management method for an electric vehicle charging station, wherein the reserved power parameter value is set to a lower limit value of the output power of the second electric vehicle charging station. As described in item 1 of the patent application scope, the charging schedule management method of an electric vehicle charging station, wherein the at least one adjustment charging station includes a first adjustment charging station and a second adjustment charging station, and the load reservation operation further includes the following steps: the server selects a first charging station from the first electric vehicle charging stations as the first adjustment charging station according to the predetermined parameter during a first predetermined period, records the target power parameter value corresponding to the charging operation of the first charging station as a reference power parameter value, and reduces the The target power parameter value is adjusted from the target power parameter value to the specific power parameter value to provide the reserved power parameter value; and the server adjusts the target power parameter value corresponding to the charging operation of the first charging station back to the reference power parameter value during a second predetermined period, and selects a second charging station from the first electric vehicle charging stations as the second adjustment charging station according to the predetermined parameter and adjusts the target power parameter value corresponding to the charging operation of the second charging station to the specific power parameter value to provide the reserved power parameter value. As described in item 1 of the patent application scope, the charging schedule management method of an electric vehicle charging station, wherein the at least one adjustment charging station includes a first adjustment charging station and a second adjustment charging station, and the load reservation operation further includes the following steps: the server selects a first charging station and a second charging station from the first electric vehicle charging stations as the first adjustment charging station and the second adjustment charging station according to the predetermined parameter during a first predetermined period, and respectively reduces the target power parameter value corresponding to the charging operation of the first charging station to a first power parameter value and reduces the target power parameter value corresponding to the charging operation of the second charging station to a second power parameter value, wherein the sum of the power parameter values reduced by the first charging station and the second charging station is equal to the reserved power parameter value. As described in Item 1 of the patent application scope, the charging schedule management method for an electric vehicle charging station, wherein the predetermined parameter includes at least one of a user priority parameter, a charging progress parameter, and a charging station parameter. As described in the charging schedule management method of an electric vehicle charging station in Item 1 of the patent application, the load reservation operation further includes the following steps: the server obtains identification data of a specific charging station corresponding to the first electric vehicle charging stations through the network; determines whether the identification data of the specific charging station meets an exclusion condition; and when the identification data of the specific charging station meets the exclusion condition, the specific charging station is not selected as the adjustment charging station. As described in Item 1 of the patent application scope, the charging schedule management method for an electric vehicle charging station, wherein the server calculates the remaining power of the charging site based on the power limit of the charging site and the target power parameter values of the first electric vehicle charging stations. A charging schedule management system for an electric vehicle charging station is applicable to a charging field, comprising: a plurality of electric vehicle charging stations, each of which has a network connection capability; and a server, comprising at least one energy management scheme, wherein the energy management scheme records a power distribution logic for controlling a corresponding charging operation of each of the electric vehicle charging stations, and obtains a usage status of each of the electric vehicle charging stations through the network. The usage status indicates whether each of the electric vehicle charging stations is in an operating state or a standby state, executes the energy management scheme to determine a corresponding target power parameter value for the charging operation of each of the plurality of first electric vehicle charging stations in the electric vehicle charging stations, and executes the charging operation according to the corresponding target power parameter value through the individual first electric vehicle charging stations, wherein the usage status of each of the first electric vehicle charging stations The state is the operating state and outputs power to at least one coupled electric vehicle according to the target power parameter value, detects that the use state of at least one second electric vehicle charging station among the electric vehicle charging stations is the standby state, determines whether a remaining power of the charging field is lower than an output power upper limit value of the second electric vehicle charging station, and when the remaining power is lower than the output power upper limit value of the second electric vehicle charging station, executes a load reservation operation, The load reservation operation is that the server calculates a reserved power parameter value, and corresponding to the reserved power parameter value, the server sequentially selects at least one adjustment charging station from the first electric vehicle charging stations according to a predetermined parameter and reduces the target power parameter value corresponding to the charging operation of the at least one adjustment charging station to a specific power parameter value, wherein the sum of the power parameter values reduced by the at least one adjustment charging station is equal to the reserved power parameter value.

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