TWI882410B - Charging management and calibration systems and methods for electric vehicle charging stations - Google Patents

Abstract

Charging management and calibration systems and methods of 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. A first charging request corresponding to a first electric vehicle is received from a first electric vehicle charging station or a first mobile device, and a first charging schedule corresponding to the first electric vehicle is generated in response to the first charging request, wherein the first electric vehicle charging station outputs power to the first electric vehicle to perform a first charging operation based on the first charging schedule. Next, during the first charging operation, current power level of the first electric vehicle is obtained at regular intervals and a calibration condition is determined whether to be triggered based on the current power level and an estimated power level corresponding to the current power level. When the calibration condition is being triggered, a calibration operation is performed to execute the energy management scheme to generate a second charging schedule based on the current power level and the estimated power level, so as to cause the first electric vehicle charging station to perform the first charging operation based on the second charging schedule.

Description

Charging management and calibration system and method for electric vehicle charging station

The present invention relates to a charging management and correction system and method for an electric vehicle charging station, and in particular to a charging management method and system for an electric vehicle charging station that can flexibly execute an energy management plan based on the charging status during the charging operation.

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. For example, in some industrial applications, a scheduled charging mechanism can be used to charge during off-peak hours to achieve the purpose of reducing the impact on the power grid. However, due to some factors such as the electric vehicle's own power limit or the output loss of the electric vehicle charging station, a specific electric vehicle charging station cannot output the specified power to charge a specific electric vehicle, resulting in the scheduled charging operation of the specific electric vehicle not being executed and completed as expected, which in turn affects the scheduled charging operations of other electric vehicles in the charging field. 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 management and calibration method and system for an electric vehicle charging station.

A charging management and correction system for an electric vehicle charging station according to 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 via a network. The server includes at least one energy management scheme, 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 receives a first charging demand corresponding to a first electric vehicle from a first electric vehicle charging station or a first mobile device among the electric vehicle charging stations, and generates a first charging plan corresponding to the first electric vehicle in response to the first charging demand, wherein the first electric vehicle charging station outputs power to the first electric vehicle according to the first charging plan to perform a first charging operation of the corresponding first electric vehicle. During the first charging operation, the server periodically obtains a current power of the corresponding first electric vehicle and determines whether to trigger a calibration condition based on the current power and an estimated power of the corresponding current power. When the calibration condition is triggered, a calibration operation is performed to execute an energy management plan based on the current power and the estimated power to generate a second charging plan, and the first electric vehicle charging station performs the first charging operation of the corresponding first electric vehicle according to the second charging plan.

A charging management and correction 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, 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. A first charging demand corresponding to a first electric vehicle is received by a first electric vehicle charging station or a first mobile device among the electric vehicle charging stations, and a first charging plan corresponding to the first electric vehicle is generated in response to the charging demand, wherein the first electric vehicle charging station outputs power to the first electric vehicle according to the first charging plan to perform a first charging operation of the corresponding first electric vehicle. Then, during the first charging operation, a current power of the corresponding first electric vehicle is obtained at regular intervals and a correction condition is determined based on the current power and an estimated power of the corresponding current power. When the correction condition is triggered, a correction operation is performed to execute an energy management plan based on the current power and the estimated power to generate a second charging plan, and the first electric vehicle charging station performs the first charging operation of the corresponding first electric vehicle according to the second charging plan.

In some embodiments, the server determines whether to trigger a calibration condition by calculating a difference between the current power and the estimated power, and determining whether the difference is greater than a predetermined threshold value. When the difference is greater than the predetermined threshold value, the calibration condition is determined to be triggered.

In some embodiments, the current power is a total received power of the first electric vehicle at a first time point in the first charging operation corresponding to the first charging operation, and the estimated power is a total estimated output power of the first electric vehicle charging station at the first time point in the first charging operation corresponding to the total received power, and the server determines that the correction condition is triggered when the difference between the total received power and the total estimated output power is greater than a predetermined threshold value.

In some embodiments, the first charging plan includes an output power setting value of the corresponding first electric vehicle charging station, and the server performs a calibration operation to determine whether the total received power is less than the total estimated output power. If so, the difference between the corresponding total estimated output power and the total received power is calculated, the output power setting value is adjusted according to the difference and the total estimated output power, and a second charging plan is generated according to the adjusted output power setting value, so that the first electric vehicle charging station performs the first charging operation with the adjusted output power setting value.

In some embodiments, the current power is a first instantaneous received power measured from the first electric vehicle at a first time point, and the estimated power is an estimated instantaneous output power of the first electric vehicle charging station corresponding to the charging operation at the first time point, and the server determines that the correction condition is triggered when the estimated instantaneous output power does not match the instantaneous received power and the difference between the estimated instantaneous output power and the instantaneous received power is greater than a predetermined threshold value.

In some embodiments, the first charging plan includes an output power setting value of the corresponding first electric vehicle charging station, and the server performs a calibration operation to obtain an instantaneous output power of the corresponding first electric vehicle charging station, determine whether the instantaneous output power of the corresponding first electric vehicle charging station is equal to the estimated instantaneous output power, and when the instantaneous output power is not equal to the estimated instantaneous output power, calculate an adjustment value between the corresponding instantaneous output power and the estimated instantaneous output power, and adjust the output power setting value according to the adjustment value to generate a second charging plan, so that the first electric vehicle charging station performs the first charging operation with the adjusted output power setting value.

In some embodiments, the server further provides a vehicle charging statistics data and the first charging plan includes an output power setting value of the corresponding first electric vehicle charging station, and the server performs a calibration operation to determine whether the first instantaneous received power is less than the estimated instantaneous output power. If so, the output power setting value is adjusted according to the vehicle charging statistics data and the difference between the first instantaneous received power and the estimated instantaneous output power to generate a second charging plan, so that the first electric vehicle charging station performs the first charging operation with the adjusted output power setting value, wherein the vehicle charging statistics data at least includes a charging characteristic curve of the corresponding first electric vehicle. In some embodiments, the server performs the calibration operation further including obtaining a second instantaneous received power of the corresponding first electric vehicle at a second time point of the first charging operation, determining whether the second instantaneous received power is equal to the adjusted output power setting value, and when the second instantaneous received power is not equal to the adjusted output power setting value and the first instantaneous received power is the same as the second instantaneous received power, setting the output power setting value to the second instantaneous received power to generate a second charging plan, so that the first electric vehicle charging station performs the first charging operation with the adjusted output power setting value.

In some embodiments, the server executes an energy management scheme to determine a corresponding charging plan for the charging operation of each electric vehicle charging station, and executes the charging operation according to the corresponding charging plan through each electric vehicle charging station. The server adjusts the charging plan corresponding to the charging operation of each electric vehicle charging station according to the second charging plan. Each electric vehicle charging station executes the corresponding charging operation according to the adjusted charging plan.

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 management and calibration system for electric vehicle charging stations

110: Charging area

112: First charging station

114: Second 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

S510, S520, S530, S540: Steps

S610, S620, S630, S640, S650, S660, S670: Steps

S710, S720, S730, S740, S750, S760, S770: Steps

S810, S820, S830: Steps

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

Figure 5 is a flow chart showing a method for determining whether a calibration condition is triggered according to an embodiment of the present invention.

Figure 6 is a flow chart showing the method of performing a calibration operation according to an embodiment of the present invention.

Figure 7 is a flow chart showing a method for performing a calibration operation according to another embodiment of the present invention.

Figure 8 is a flow chart showing a method for performing a calibration operation according to another embodiment of the present invention.

Figure 9 is a flow chart showing a method for performing a calibration operation according to another embodiment of the present invention.

Figure 10 is a flow chart showing a charging management and calibration method for an electric vehicle charging station according to another embodiment of the present invention.

FIG. 1 shows a charging management and calibration system for an electric vehicle charging station according to an embodiment of the present invention. The charging management and calibration 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 management and calibration 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 charging station 112, a second charging station 114, and a server 130 connected to the first charging station 112 and the second charging station 114 respectively through a network 120. Individual charging stations can provide an electric vehicle (EV1, EV2) of an electric vehicle user for a charging operation. In some embodiments, the network 120 may be a wired network, a telecommunications network, and a wireless network, such as a Wi-Fi network. The server 130 may receive various data from the first charging station 112 and the second charging station 114 through the network 120, and transmit relevant signals to the first charging station 112 and the second charging station 114. The first charging station 112 and the second charging station 114 may perform relevant operations according to the signals received by the server 130. For example, when the electric vehicle EV1 is coupled to the first charging station 112 through a charging gun of the first charging station 112 to perform a charging operation, the first charging station 112 can continuously transmit the charging information of the corresponding charging operation of the electric vehicle EV1 through the network 120, and the server 130 can receive the charging information of the corresponding charging operation from the first charging station 112 through the network 120. Similarly, when the electric vehicle EV2 is coupled to the second charging station 114 through a charging gun of the second charging station 114 to perform a charging operation, the second 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 charging station 114 through the network 120.

It is worth noting that the user can connect the electric vehicle EV1 to the first 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 charging station 112, so as to use the first charging station 112 to charge the electric vehicle EV1. Similarly, the user can connect the electric vehicle EV2 to the second 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 charging station 114, so as to use the second charging station 114 to charge the electric vehicle EV2. It is worth noting that in some embodiments, the server 130 may directly or indirectly receive a charging request from a mobile device (not shown in FIG. 1 ) of the owner of the corresponding electric vehicle EV1, generate a charging authorization instruction according to the charging request, and transmit it to the first charging station 112 through the network 120, so that the first charging station 112 outputs power to an electric vehicle EV1 electrically connected thereto, such as an electric motorcycle or an electric car, or prohibits the first charging station 112 from outputting power to the electric vehicle EV1. It is noted that in some embodiments, the charging request may be accompanied by an identity authentication and/or a payment mechanism, and the charging authorization instruction will be generated only after the identity authentication and/or the payment mechanism is completed. In some embodiments, the user of the electric vehicle EV1 can download and install an application using his mobile device to generate a charging request through the user interface of the application. In some embodiments, the user can scan a quick response code (QR code) on the first charging station 112 through the scanning function of the application to generate the above-mentioned charging request, thereby starting a charging process. In some embodiments, the user can select a specific charging station through the application and execute an activation function to generate the above-mentioned charging request, thereby starting a charging process. 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 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 for the electric vehicle charging station of the charging site 110 according to at least one energy management scheme. Specifically, the server 130 can generate a corresponding charging plan, generate corresponding instructions according to the charging plan, and transmit the instructions to the charging station (112, 114) through the network 120 to control the 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 charging station from outputting power to the electric vehicle. It is worth noting that in some embodiments, when the server 130 receives a charging request 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 performed immediately. The server will schedule the charging according to the time electricity price, the power limit of the site, and the electric vehicles that need to be charged, select the appropriate charging time point, and perform all charging operations in a way with the lowest electricity cost. In some embodiments, each electric vehicle that requires charging may have its charging parameters, such as the required power, the desired charging fee, and/or the estimated charging time at this charging station. The server can also perform energy management, such as charging scheduling operations, based on the charging parameters of each corresponding electric vehicle.

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 charging station 112 and the second charging station 114 in FIG. 1. It 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 includes at least a storage unit 212, a network connection unit 214, a charging gun 216, and a processing unit 218. 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 management and calibration 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 status of the corresponding electric vehicle through a network using the network connection unit 214 for a cloud management server, such as the cloud server 130, to perform subsequent charging management. In another embodiment, the processing unit 216 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 by the server 130, and output the power to at least one electric vehicle through the charging gun 216 for charging. Among them, the power parameters of the corresponding charging operation are included in the charging plan of the corresponding charging operation. It is worth noting that in some embodiments, the electric vehicle charging station 200 can include an RFID reading unit to sense the information of an RFID 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 program EMP. The energy management program 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 configured to determine the execution order of individual charging demands (charging operations) in the charging demands of 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 period and an off-peak period, and a corresponding time electricity price. In some embodiments, the storage unit 132 may include charging parameters received by an electric vehicle charging station or a mobile device. The storage unit 110 may further record a flag (not shown in FIG. 3). The flag may have a specific initial value. It is worth noting that in some embodiments, the specific initial value may be implemented with a hardware and/or software protection mechanism, such as encryption, to ensure that the specific initial value is not easily obtained. It must be noted that in some embodiments, the flag may be implemented with a hardware component, such as a register. In some embodiments, the specific initial value of the flag may be deleted. In some embodiments, the value of the flag can be set to a specific value different from the specific initial value. For example, in one embodiment, the specific initial value can be 0, and the specific value can be any value other than 0, such as 1, but the present invention is not limited to this. Through the network connection unit 134, the server 130 can couple and communicate with the electric vehicle charging stations 112 and 114 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 power and specifies power parameters to output power to charge the electric vehicle. The processor 136 can control the operation of the relevant software and hardware in the server 130, and execute the charging management and calibration method of the electric vehicle charging station of this case, and the relevant details will be described 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. In some embodiments, the processor 136 can determine whether to adjust an output power setting value of the corresponding electric vehicle charging station (for example: the output power of the electric vehicle charging station) to generate a second charging plan according to the value of the flag. As mentioned above, in some embodiments, the value of the flag can be a specific initial value or a specific value different from the specific initial value. For example, in one embodiment, the specific initial value may be 0, and the specific value may be any value other than 0, such as 1, but the present invention is not limited to this. Similarly, in some embodiments, when the value of the flag is a specific initial value, the output power setting value of the electric vehicle charging station will not be adjusted, and the electric vehicle charging station continues to perform the corresponding charging operation according to the first charging plan. When the value of the flag is not a specific initial value, the output power setting value of the electric vehicle charging station will be adjusted to generate a second charging plan, and the electric vehicle charging station performs the corresponding charging operation according to the second charging plan. It is worth noting that in some embodiments, the processor 136 may 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 noted that, as mentioned above, the server can perform 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 in a manner with the lowest electricity cost. Similarly, each electric vehicle requiring charging can have its charging parameters, such as the required power and/or the expected stay time at this charging station. The server can also perform energy management, such as charging scheduling operations, based on the charging parameters of each corresponding electric vehicle.

FIG. 4 shows a charging management and correction method for an electric vehicle charging station according to an embodiment of the present invention. The charging management and correction 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 scheme is provided in the server. As mentioned above, the energy management scheme can record a power distribution logic for controlling a charging operation corresponding to each of the electric vehicle charging stations. It is noted that the power distribution logic is configured to determine the execution order of individual charging demands (charging operations) in the charging demands (charging operations) corresponding to different charging stations under the power limit of the charging field, and the corresponding charging plan when executing the charging demand. The charging plan can indicate the charging schedule details for executing the charging demand, such as the charging operation time, output power setting value, target power parameter value, etc. of the corresponding charging demand. As in step S420, a first charging demand corresponding to a first electric vehicle is received by a first electric vehicle charging station or a first mobile device among the electric vehicle charging stations. 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 is obtained. It is noted that, in some embodiments, the first charging parameter may include at least a required power amount, a charging fee and/or a charging time, etc. It is noted that the charging time may be the time that the first electric vehicle is expected to stay at the first electric vehicle charging station. Then, as in step S430, a first charging plan corresponding to the first electric vehicle is generated in response to the charging demand. In this step, the server can execute an energy management scheme according to the required power, charging cost and/or charging time of the corresponding first charging parameter to determine a first charging plan for a first charging operation of the corresponding first electric vehicle charging station, wherein the charging plan is used to generate an instruction corresponding to the first charging operation and transmit the instruction to the first electric vehicle charging station through the network to control the first electric vehicle charging station to output power to the electric vehicle connected to the charging station at a specified output power setting value, such as a specified ampere, during a specific time period, or prohibit the charging station from outputting power to the electric vehicle. It is noted that the first electric vehicle charging station can output power to the first electric vehicle according to the first charging plan to perform the first charging operation of the corresponding first electric vehicle. During the first charging operation, such as step S440, the server periodically obtains a current power of the corresponding first electric vehicle and determines whether to trigger a calibration condition based on the current power and an estimated power of the corresponding current power. Specifically, during the execution of the first charging operation, the server can periodically sample the charging state of the first electric vehicle to obtain the current power of the corresponding first electric vehicle, and estimate the estimated power corresponding to this specific sampling point according to the first charging plan, and determine whether to trigger a calibration condition accordingly. For example, the current power may be the instantaneous received power of the first electric vehicle at a specific sampling point and the estimated power may be the corresponding estimated instantaneous output power of the first electric vehicle at the specific sampling point, or the current power may be the accumulated total received power of the first electric vehicle at this specific sampling point and the estimated power may be the corresponding accumulated total output power of the first electric vehicle at the specific sampling point, etc., but not limited thereto. It is noted that the accumulated total received power of the first electric vehicle at a specific sampling time point is the total received power of the first electric vehicle calculated from the start of charging of one of the corresponding first charging operations to the specific sampling time point. In other words, the current power represents the actual charging state of the corresponding first charging operation, and the estimated power represents the expected charging state. In some embodiments, the current power of the corresponding first electric vehicle can be obtained by the first electric vehicle and then uploaded to the server, or obtained by the electric vehicle charging station through the first electric vehicle and then uploaded to the server. The server can then determine whether to trigger a calibration condition based on the current power and the corresponding estimated power.

Figure 5 shows a method for determining whether a calibration condition is triggered according to an embodiment of the present invention.

As in step S510, the server calculates the difference between the current power of the corresponding first electric vehicle obtained in step S440 and the estimated power of the corresponding current power, and as in step S520, determines whether the difference is greater than a predetermined threshold value. The predetermined threshold value may be a predefined error tolerance value. For example, in one embodiment, when the current power value is less than the estimated power value, the server may subtract the current power value from the estimated power value to obtain the difference. It should be noted that the aforementioned method of calculating the difference is only an example of this case, and the present invention is not limited thereto. Any mathematical method that can calculate the difference between the two may be applicable to the present invention. When the difference is greater than the predetermined threshold value (Yes in step S530), as in step S530, the server determines that the calibration condition is triggered. On the contrary, when the difference is not greater than the predetermined threshold value (No in step S530), as in step S540, the server determines that the calibration condition is not triggered. In other words, the present case allows a certain error value to exist, and only when the error value exceeds this error value will it be determined that the calibration condition is triggered and calibration is required, which can avoid erroneous judgments and unnecessary calculations. In one embodiment, the current power may be a total received power of the first electric vehicle at a first time point in the first charging operation corresponding to the first charging operation, and the estimated power may be a total estimated output power of the first electric vehicle charging station corresponding to the total received power at the first time point in the first charging operation, and the server determines that the correction condition is triggered when the difference between the total received power and the total estimated output power is greater than a predetermined threshold value. In another embodiment, the current power may be a first instantaneous received power measured from the first electric vehicle at a first time point, and the estimated power is an estimated instantaneous output power corresponding to the first charging operation of the first electric vehicle charging station at the first time point, and the server determines that the correction condition is triggered when the estimated instantaneous output power does not match the instantaneous received power and the difference between the estimated instantaneous output power and the instantaneous received power is greater than a predetermined threshold value.

Please refer back to Figure 4. When it is determined in step S450 that the calibration condition is not triggered (step S450 is No), the server then determines whether the first charging operation has been completed in step S460. When the first charging operation has not been completed (step S460 is No), return to step S440, continue to obtain the current power of the corresponding first electric vehicle and determine whether to trigger the calibration condition based on the current power and the estimated power of the corresponding current power until the first charging operation is completed. When the first charging operation has been completed (step S460 is Yes), the process ends. When it is determined in step S450 that the calibration condition is triggered (yes in step S450), steps S470 to S480 are executed. As in step S470, the server executes a calibration operation to execute an energy management plan based on the current power and the estimated power to generate a second charging plan. In short, when the calibration condition is triggered, it means that the actual charging state is inconsistent with the expected charging state, so a calibration operation needs to be performed to readjust the charging plan, wherein the calibration operation adjusts the original first charging plan to a new second charging plan based on the current power and the estimated power. For example, in some embodiments, the first charging plan includes an output power setting value, and the second charging plan includes the adjusted output power setting value. The execution details of the calibration operation will be described below. Then, as in step S480, the first electric vehicle charging station performs the first charging operation of the corresponding first electric vehicle according to the second charging plan. Then, the server executes step S460 to determine whether the first charging operation has been completed. When the first charging operation has not been completed (no in step S460), return to step S440, continue to obtain the current power of the corresponding first electric vehicle and determine whether to trigger the calibration condition according to the current power and the estimated power of the corresponding current power until the first charging operation is completed. When the first charging operation has been completed (yes in step S460), the process ends. In other words, in this embodiment, the server can continuously monitor the current power and estimated current power of the first electric vehicle during the execution of the first charging operation to determine whether the charging plan needs to be corrected, and execute the correction operation to adjust the charging plan when the correction condition is triggered to make it conform to the actual charging status.

It is worth noting that there are many possible factors that may cause the error between the actual charging state and the expected charging state, such as factors of the electric vehicle charging station itself or factors of the first electric vehicle. Therefore, this case provides several examples of correction operations as an illustration to perform corresponding corrections for various possible scenarios, but the present invention is not limited to this.

FIG. 6 shows a method for performing a calibration operation according to an embodiment of the present invention. In this embodiment, the first charging plan includes an output power setting value of the corresponding first electric vehicle charging station, and when the actual accumulated charging power at a specific sampling time point is inconsistent with the estimated total charging power, the difference between the two can be calculated and the output power setting value of the corresponding first electric vehicle charging station can be adjusted accordingly to perform a calibration operation.

As in step S610, the server obtains the total received power of the first electric vehicle at the first time point in the first charging operation corresponding to the first charging operation, and estimates the corresponding total estimated output power, and as in step S620, determines whether the total received power is less than the total estimated output power. It should be noted that the first time point can be any time point in the execution of the first charging operation. For example, in one embodiment, the first time point can be a sampling point every minute, every 10 minutes or every half hour after the start of charging of the first charging operation, but the present invention is not limited to this. In some embodiments, the current power of the corresponding first electric vehicle can be obtained by the first electric vehicle and then uploaded to the server, or obtained by the first electric vehicle charging station through the first electric vehicle and then uploaded to the server. Similarly, it is noted that the accumulated total received power of the first electric vehicle at the first time point is the total received power of the first electric vehicle accumulated from the start of charging of one of the corresponding first charging operations to the first time point, and the server can obtain the charging power of the first electric vehicle at multiple time points within the period from the start of charging to the first time point from the first electric vehicle or the first electric vehicle charging station through the network and sum up these charging power amounts to obtain the total received power of the corresponding first charging operation. Similarly, the server can calculate the charging power of the first electric vehicle at multiple time points within the period from the start of charging to the first time point according to the first charging plan and sum up these calculated charging power amounts to estimate the corresponding total estimated output power. When the total received power is greater than or equal to the total estimated output power (No in step S620), as in step S660, it means that there is no need to perform a calibration operation, the output power setting value of the first electric vehicle charging station remains unchanged, and the process ends. When the total received power is less than the total estimated output power (Yes in step S620), as in step S630, the server calculates the difference based on the total estimated output power and the total received power. Among them, the predetermined threshold value can be a pre-defined error tolerance value. For example, in one embodiment, when the value of the total received power is less than the value of the total estimated output power, the server can subtract the value of the total received power from the value of the total estimated output power to obtain the difference. It should be noted that the aforementioned method of calculating the difference is only for this case, and the present invention is not limited to this. Any mathematical method that can calculate the difference between the two can be applied to the present invention. After calculating the difference, as in step S640, the server adjusts the output power setting value of the corresponding first electric vehicle charging station according to the difference and the total estimated output power, and as in step S650, generates a second charging plan according to the adjusted output power setting value, so that the first electric vehicle charging station performs the first charging operation with the adjusted output power setting value.

FIG. 7 shows a method for performing a calibration operation according to another embodiment of the present invention. In this embodiment, the first charging plan includes an output power setting value of the corresponding first electric vehicle charging station, and when the actual instantaneous received power of the first electric vehicle charging station at a specific sampling time point is inconsistent with the estimated instantaneous charging power, the server can calculate the difference between the two and adjust the output power setting value of the corresponding first electric vehicle charging station accordingly to perform a calibration operation.

As in step S710, the server obtains the first instantaneous received power measured by the first electric vehicle at the first time point in the first charging operation, and estimates the corresponding estimated instantaneous output power. Similarly, the first time point can be any time point in the execution of the first charging operation. For example, in one embodiment, the first time point can be a sampling point every minute, every 10 minutes, or every half hour after the charging of the first charging operation starts, but the present invention is not limited thereto. In some embodiments, the first instantaneous received power of the corresponding first electric vehicle can be obtained by the first electric vehicle and then uploaded to the server, or obtained by the first electric vehicle charging station through the first electric vehicle and then uploaded to the server. It is noted that the first instantaneous received power is the real-time received power measured from the first electric vehicle at the first time point, that is, the real-time received power of the first electric vehicle, and the server can obtain the real-time received power of the first electric vehicle at the first time point from the first electric vehicle or the first electric vehicle charging station through the network. Similarly, the server can calculate a specific output power at the corresponding first time point according to the first charging plan to estimate the corresponding estimated instantaneous output power. Then, as in step S720, the server obtains the instantaneous output power of the corresponding first electric vehicle charging station, and as in step S730, determines whether the instantaneous output power of the corresponding first electric vehicle charging station is equal to the estimated instantaneous output power. In some embodiments, the instantaneous output power of the corresponding first electric vehicle charging station may be the instantaneous output power obtained at a specific location of the corresponding first electric vehicle charging station, such as the charging gun head. When the instantaneous output power is equal to the estimated instantaneous output power (Yes in step S730), as in step S770, it means that no calibration operation is required, the output power setting value of the first electric vehicle charging station remains unchanged, and the process ends. When the instantaneous output power is not equal to the estimated instantaneous output power (No in step S730), as in step S740, the server calculates an adjustment value based on the instantaneous output power and the estimated instantaneous output power. For example, in one embodiment, when the instantaneous output power value is less than the estimated instantaneous output power value, it indicates that the first electric vehicle charging station may have power loss, and the server can subtract the instantaneous output power value from the estimated instantaneous output power value to obtain the adjustment value. It should be noted that the aforementioned method for calculating the adjustment value is only an example of this case, and the present invention is not limited thereto. Any mathematical method that can calculate the adjustment value can be applied to the present invention. After calculating the adjustment value, as in step S750, the server adjusts the output power setting value of the corresponding first electric vehicle charging station according to the adjustment value, and as in step S760, generates a second charging plan according to the adjusted output power setting value, so that the first electric vehicle charging station performs the first charging operation with the adjusted output power setting value. For example, if the instantaneous output power measured by the first electric vehicle charging station is 8 amps, and the estimated instantaneous output power (output power setting value) is 10 amps, it means that the first electric vehicle charging station will lose 2 amps of power. Therefore, the server can increase the output power setting value by 2 amps to 12 amps to generate the second charging plan, so that the first electric vehicle can receive the expected receiving power.

FIG. 8 shows a method for performing a calibration operation according to another embodiment of the present invention. In this embodiment, the server may include a vehicle charging statistics data and the first charging plan includes an output power setting value of the corresponding first electric vehicle charging station. When the actual instantaneous received power at a specific sampling time point is inconsistent with the estimated instantaneous charging power, the difference between the two can be calculated and the output power setting value of the corresponding first electric vehicle charging station can be adjusted through the difference and the vehicle charging statistics data to perform a calibration operation.

First, as in step S810, a vehicle charging statistics is recorded on the server. The vehicle charging statistics may include various vehicle data of electric vehicles such as basic battery data (e.g., battery age, battery cycle times, battery percentage, temperature, etc.) and a charging characteristic curve of a corresponding specific electric vehicle. In some embodiments, the vehicle charging statistics include at least one charging characteristic curve of a corresponding first electric vehicle, and the charging characteristic curve records the historical changes and corresponding relationships of the battery voltage or battery capacity of the corresponding first electric vehicle in different charging stages (e.g., constant current charging stage, constant voltage charging stage, and floating charging stage), and the server can estimate the charging capacity and current corresponding to a specific received capacity or output capacity through the charging characteristic curve. As in step S820, the server obtains the first instantaneous received power measured from the first electric vehicle at the first time point in the first charging operation, and estimates the corresponding estimated instantaneous output power. Similarly, the first time point can be any time point in the execution of the first charging operation. In some embodiments, the first instantaneous received power of the corresponding first electric vehicle can be obtained by the first electric vehicle and then uploaded to the server, or obtained by the first electric vehicle charging station through the first electric vehicle and then uploaded to the server. It is reminded that the first instantaneous received power is the real-time received power measured from the first electric vehicle at the first time point, that is, the real-time received power of the first electric vehicle, and the server can obtain the real-time received power of the first electric vehicle at the first time point from the first electric vehicle or the first electric vehicle charging station through the network. Similarly, the server can calculate a specific output power at the corresponding first time point according to the first charging plan to estimate the corresponding estimated instantaneous output power. Then, as in step S830, the server determines whether the first instantaneous received power is less than the estimated instantaneous output power. When the first instantaneous received power is greater than or equal to the estimated instantaneous output power (No in step S830), as in step S840, it means that no calibration operation is required, and the output power setting value of the first electric vehicle charging station remains unchanged, and the process ends. When the first instantaneous received power is less than the estimated instantaneous output power (Yes in step S830), as in step S850, the server adjusts the output power setting value of the first electric vehicle charging station according to the vehicle charging statistics and the difference between the first instantaneous received power and the estimated instantaneous output power, and as in step S860, generates a second charging plan according to the adjusted output power setting value, so that the first electric vehicle charging station performs the first charging operation with the adjusted output power setting value. For example, in one embodiment, the server can calculate a difference according to the first instantaneous received power and the estimated instantaneous output power, and estimate an adjustment value through the charging characteristic curve in the vehicle charging statistics and the difference, and then adjust the output power setting value accordingly, but the present invention is not limited to this.

FIG. 9 shows a method for performing a calibration operation according to another embodiment of the present invention. In this embodiment, the first charging plan includes an output power setting value of the corresponding first electric vehicle charging station. When the actual instantaneous received power at a specific sampling time point is inconsistent with the estimated instantaneous charging power and the first electric vehicle terminal has a power limit value, the server can adjust the output power setting value of the corresponding first electric vehicle charging station according to the power limit value to perform a calibration operation.

First, as in step S910, a vehicle charging statistics is recorded in the server. Similarly, the vehicle charging statistics may include various vehicle data of electric vehicles such as basic battery data (e.g., battery age, battery cycle times, battery percentage, temperature, etc.) and charging characteristic curves of corresponding specific electric vehicles. In some embodiments, the vehicle charging statistics include at least a charging characteristic curve corresponding to the first electric vehicle, which records the historical changes and corresponding relationships of the battery voltage or battery capacity of the first electric vehicle in different charging stages (such as constant current charging stage, constant voltage charging stage and floating charging stage), and the server can estimate the charging capacity and current corresponding to the specific received capacity or output capacity through the charging characteristic curve. For example, in step S920, the server obtains the first instantaneous received capacity measured from the first electric vehicle at the first time point in the first charging operation, and estimates the corresponding estimated instantaneous output capacity. Similarly, the first instantaneous received power is the real-time received power measured from the first electric vehicle at the first time point, that is, the real-time received power of the first electric vehicle, and the server can obtain the real-time received power of the first electric vehicle at the first time point from the first electric vehicle or the first electric vehicle charging station through the network. Similarly, the server can calculate a specific output power at the corresponding first time point according to the first charging plan to estimate the corresponding estimated instantaneous output power. Then, as in step S930, the server determines whether the first instantaneous received power is less than the estimated instantaneous output power. When the first instantaneous received power is greater than or equal to the estimated instantaneous output power (No in step S930), as in step S960, it means that no calibration operation is required, and the output power setting value of the first electric vehicle charging station remains unchanged, and then step S970 is executed. When the first instantaneous received power is less than the estimated instantaneous output power (Yes in step S940), as in step S950, the server adjusts the output power setting value of the first electric vehicle charging station according to the vehicle charging statistics and the difference between the first instantaneous received power and the estimated instantaneous output power, and as in step S960, generates a second charging plan according to the adjusted output power setting value, so that the first electric vehicle charging station performs the first charging operation with the adjusted output power setting value, and then executes step S970. As in step S970, the server obtains the second instantaneous received power measured from the first electric vehicle at the second time point in the first charging operation. Similarly, the second time point can be any time point after the first time point. It is noted that the second instantaneous received power is the real-time received power measured from the first electric vehicle at the second time point, that is, the real-time received power of the first electric vehicle, and the server can obtain the real-time received power of the first electric vehicle at the second time point from the first electric vehicle or the first electric vehicle charging station through the network. Then, as in step S980, the server determines whether the second instantaneous received power is equal to the adjusted output power setting value. When the second instantaneous received power is equal to the adjusted output power setting value (step S980 is), as in step S994, it means that there is no need to perform the calibration operation again, the output power setting value of the first electric vehicle charging station remains unchanged, and the process ends. When the second instantaneous received power is not equal to the adjusted output power setting value (No in step S980), the server then determines whether the first instantaneous received power is equal to the second instantaneous received power in step S990. When the first instantaneous received power is not equal to the second instantaneous received power (No in step S990), it indicates that the calibration has failed, and the process returns to step S920 to perform the calibration operation again. When the first instantaneous received power is equal to the second instantaneous received power (Yes in step S990), as in step S992, it means that the first electric vehicle has a power limit value that causes calibration failure, so the server sets the output power setting value to the second instantaneous received power (i.e., power limit value) to generate a second charging plan, causing the first electric vehicle charging station to perform the first charging operation with the adjusted output power setting value.

In some embodiments, a flag may be provided on the server. The flag may have a specific initial value. It is worth noting that in some embodiments, the specific initial value may be implemented with a hardware and/or software protection mechanism, such as encryption, to ensure that the specific initial value cannot be easily obtained. It must be noted that in some embodiments, the flag may be implemented with a hardware component, such as a register. The server may change the value of the flag when it determines that the first electric vehicle terminal has a power limit value. In some embodiments, the specific initial value of the flag may be deleted. In some embodiments, the value of the flag may be set to a specific value different from the specific initial value. For example, in one embodiment, the specific initial value may be 0, and the specific value may be any value other than 0, such as 1, but the present invention is not limited to this. Afterwards, the server can decide whether to adjust the output power setting value of the electric vehicle charging station to generate a second charging plan based on the value of the flag. Similarly, in some embodiments, when the value of the flag is a specific initial value, the output power setting value of the electric vehicle charging station will not be adjusted, and the electric vehicle charging station continues to perform the corresponding charging operation according to the first charging plan. When the value of the flag is not a specific initial value, the output power of the electric vehicle charging station will be adjusted to the instantaneous received power to generate a second charging plan, and the electric vehicle charging station performs the corresponding charging operation according to the second charging plan. In other words, when the flag value is changed to a specific value other than the specific initial value, it means that the electric vehicle can only receive charging with a specific input power and cannot be charged according to the allocated power. Therefore, the output power of the electric vehicle charging station can be adjusted to this specific power and the corresponding charging plan can be adjusted, and the remaining power can be allocated to the charging operations of other electric vehicle charging stations for use.

In other words, in the above embodiment, the first electric vehicle charging station first outputs power to the first electric vehicle according to the output power setting value specified in the original first charging plan to perform the first charging operation, and after the calibration operation is completed, the first electric vehicle charging station will output power to the first electric vehicle according to the output power setting value specified in the second charging plan to perform the subsequent first charging operation.

FIG. 10 shows a charging management and correction method for an electric vehicle charging station according to another embodiment of the present invention. The charging management and correction 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 S1010, at least one energy management scheme is provided in the server. As mentioned above, the energy management scheme can record a power distribution logic for controlling a charging operation corresponding to each of the electric vehicle charging stations. It is noted that the power distribution logic is configured to determine the execution order of individual charging demands (charging operations) in the charging demands (charging operations) corresponding to different charging stations under the power limit of the charging field, and the corresponding charging plan when executing the charging demand. The charging plan can indicate the charging schedule details for executing the charging demand, such as the charging operation time, output power setting value, target power parameter value, etc. of the corresponding charging demand. As in step S1020, the server executes an energy management scheme to determine a corresponding charging plan for the charging operation of each electric vehicle charging station, and performs charging operations on a coupled electric vehicle through individual electric vehicle charging stations according to the corresponding charging plan. For example, when the total amount of the number of electric vehicle charging stations that need to perform charging operations multiplied by the output power upper limit of the individual electric vehicle charging stations is greater than the power limit of the charging site, the power output of each corresponding electric vehicle charging station will be reduced so that the total amount does not exceed the power limit of the charging site. As in step S1030, a first charging demand corresponding to a first electric vehicle is received by a first electric vehicle charging station or a first mobile device in the electric vehicle charging stations. 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 is obtained. It is noted that in some embodiments, the first charging parameter may include at least a required power amount, a charging fee and/or a charging time. It is noted that the charging time may be the time the first electric vehicle is expected to stay at the first electric vehicle charging station. Then, as in step S1040, a first charging plan corresponding to the first electric vehicle is generated in response to the charging demand. In this step, the server can execute an energy management scheme according to the required power, charging cost and/or charging time of the corresponding first charging parameter to determine a first charging plan for a first charging operation of the corresponding first electric vehicle charging station, wherein the charging plan is used to generate an instruction corresponding to the first charging operation and transmit the instruction to the first electric vehicle charging station through the network to control the first electric vehicle charging station to output power to the electric vehicle connected to the charging station at a specified output power setting value, such as a specified ampere, during a specific time period, or prohibit the charging station from outputting power to the electric vehicle. It is noted that the first electric vehicle charging station can output power to the first electric vehicle according to the first charging plan to perform the first charging operation of the corresponding first electric vehicle. During the first charging operation, such as step S1050, the server periodically obtains a current power of the corresponding first electric vehicle and determines whether to trigger a calibration condition based on the current power and an estimated power of the corresponding current power. Specifically, during the execution of the first charging operation, the server can periodically sample the charging state of the first electric vehicle to obtain the current power of the corresponding first electric vehicle, and estimate the estimated power corresponding to this specific sampling point based on the first charging plan, and determine whether to trigger a calibration condition based on this. For the method of determining whether to trigger the calibration condition, please refer to the description of Figure 5, and the details are not repeated here. When it is determined in step S1050 that the calibration condition is triggered, such as step S1060, the server executes a calibration operation to execute the energy management scheme according to the current power and the estimated power to generate a second charging plan. In short, when the calibration condition is triggered, it means that the actual charging state is inconsistent with the expected charging state, so it is necessary to execute the calibration operation to readjust the charging plan, wherein the calibration operation is to adjust the original first charging plan to a new second charging plan according to the current power and the estimated power. Afterwards, as in step S1070, the server adjusts the charging plan corresponding to the charging operation of each electric vehicle charging station according to the second charging plan, and as in step S1080, each electric vehicle charging station performs the corresponding charging operation according to the adjusted charging plan.

Therefore, the charging management and correction system and method of the electric vehicle charging station of the present case can provide a flexible charging schedule to perform the electric vehicle charging management operation, and can monitor the charging status during the charging management operation and dynamically adjust the charging plan and load according to the charging status, so that the charging schedule is more accurate and more efficient, and further increase the flexibility of the load adjustment operation and/or scheduled charging in individual charging sites.

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 similarly to 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, S470, S480: Steps

Claims (10)

A charging management and calibration 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 charging operation corresponding to each of the electric vehicle charging stations, wherein a first electric vehicle charging station or a first mobile device among the electric vehicle charging stations receives a first charging demand corresponding to a first electric vehicle, and generates a first charging plan corresponding to the first electric vehicle in response to the first charging demand, wherein the first charging plan is configured to control the charging operation corresponding to each of the electric vehicle charging stations. An electric vehicle charging station outputs power to the first electric vehicle according to the first charging plan to perform a first charging operation corresponding to the first electric vehicle. During the first charging operation, a current power of the first electric vehicle is obtained on a regular basis and a correction condition is determined based on the current power and an estimated power of the current power to determine whether to trigger a correction condition. When the correction condition is triggered, a correction operation is performed to execute the energy management plan based on the current power and the estimated power to generate a second charging plan, and the first electric vehicle charging station performs the first charging operation corresponding to the first electric vehicle according to the second charging plan. As described in Item 1 of the patent application scope, the charging management and calibration system for an electric vehicle charging station, wherein the server determines whether to trigger the calibration condition by calculating a difference between the current power and the estimated power and determining that the difference is greater than a predetermined threshold value. When the difference is greater than the predetermined threshold value, the calibration condition is determined to be triggered. As described in item 2 of the patent application scope, the charging management and correction system of an electric vehicle charging station, wherein the current power is a total received power of the first electric vehicle at a first time point in the first charging operation corresponding to the first charging operation, and the estimated power is a total estimated output power of the first electric vehicle charging station at the first time point in the first charging operation corresponding to the total received power, and the server calculates the difference based on the total received power and the total estimated output power and determines that the correction condition is triggered when the difference is greater than the predetermined threshold value. As described in item 3 of the patent application scope, the charging management and calibration system for an electric vehicle charging station, wherein the first charging plan includes an output power setting value corresponding to the first electric vehicle charging station and the server performs the calibration operation to determine whether the total received power is less than the total estimated output power. If so, the difference is calculated based on the total estimated output power and the total received power, the output power setting value is adjusted based on the difference and the total estimated output power, and the second charging plan is generated based on the adjusted output power setting value, so that the first electric vehicle charging station performs the first charging operation with the adjusted output power setting value. As described in item 2 of the patent application scope, the charging management and correction system of an electric vehicle charging station, wherein the current power is a first instantaneous received power measured from the first electric vehicle at a first time point in the first charging operation, and the estimated power is an estimated instantaneous output power of the first electric vehicle charging station corresponding to the first charging operation at the first time point, and the server calculates the difference based on the estimated instantaneous output power and the instantaneous received power and determines that the correction condition is triggered when the difference is greater than the predetermined threshold value. As described in item 5 of the patent application scope, the charging management and calibration system for an electric vehicle charging station, wherein the first charging plan includes an output power setting value corresponding to the first electric vehicle charging station and the server performs the calibration operation to obtain an instantaneous output power of the first electric vehicle charging station, determine whether the instantaneous output power is equal to the estimated instantaneous output power, and when the instantaneous output power is not equal to the estimated instantaneous output power, calculate an adjustment value based on the instantaneous output power and the estimated instantaneous output power, and adjust the output power setting value based on the adjustment value to generate the second charging plan, so that the first electric vehicle charging station performs the first charging operation with the adjusted output power setting value. As described in item 5 of the patent application scope, the charging management and calibration system of an electric vehicle charging station, wherein the server further records a vehicle charging statistic and the first charging plan includes an output power setting value corresponding to the first electric vehicle charging station, and wherein the server performs the calibration operation to determine whether the first instantaneous received power is less than the estimated instantaneous output power, and if so, adjust the output power setting value according to the vehicle charging statistic and the difference between the first instantaneous received power and the estimated instantaneous output power to generate the second charging plan, so that the first electric vehicle charging station performs the first charging operation with the adjusted output power setting value, wherein the vehicle charging statistic at least includes a charging characteristic curve corresponding to the first electric vehicle. As described in item 7 of the patent application scope, the charging management and calibration system of the electric vehicle charging station, wherein the server performs the calibration operation further including obtaining a second instantaneous received power of the corresponding first electric vehicle at a second time point of the charging operation, determining whether the second instantaneous received power is equal to the adjusted output power setting value, and when the second instantaneous received power is not equal to the adjusted output power setting value and the first instantaneous received power is the same as the second instantaneous received power, setting the output power setting value to the second instantaneous received power to generate the second charging plan, so that the first electric vehicle charging station performs the first charging operation with the adjusted output power setting value. As described in item 1 of the patent application scope, the charging management and correction system for electric vehicle charging stations, wherein the server executes the energy management scheme to determine a corresponding charging plan for the charging operation of each of the electric vehicle charging stations, and performs the charging operation according to the corresponding charging plan through the individual electric vehicle charging stations, and adjusts the charging plan corresponding to the charging operation of each of the electric vehicle charging stations according to the second charging plan, and each of the electric vehicle charging stations performs the corresponding charging operation according to the adjusted charging plan. A charging management and calibration method for an electric vehicle charging station is applicable to a charging field, wherein the charging field includes a plurality of electric vehicle charging stations, and the electric vehicle charging stations are connected to a server via a network, and includes 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; receiving a charging demand corresponding to a first electric vehicle from a first electric vehicle charging station or a first mobile device among the electric vehicle charging stations; generating a first charging plan corresponding to the first electric vehicle in response to the charging demand, The first electric vehicle charging station outputs power to the first electric vehicle according to the first charging plan to perform a first charging operation corresponding to the first electric vehicle; during the first charging operation, a current power of the first electric vehicle is obtained on a regular basis and a correction condition is determined based on the current power and an estimated power of the current power to determine whether to trigger a correction condition; and when the correction condition is triggered, a correction operation is performed to execute the energy management plan based on the current power and the estimated power to generate a second charging plan, and the first electric vehicle charging station performs the first charging operation corresponding to the first electric vehicle according to the second charging plan.

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