KR20240001006A - Charger connected to energy storage system and method of providing user interface of charger thereof - Google Patents

Abstract

The present invention relates to a charger connected to an energy storage device and a method of providing a user interface for the charger. The charger according to an embodiment of the present invention includes a power unit that receives power from one or more supply sources of the grid or an energy storage device and a charging amount. An interface unit that provides an interface for selecting either the charging method or charging time method and an interface for setting the charging amount or charging time according to the selected method, and a charging unit for charging amount or charging time depending on the type of supply source. It includes a charger control unit that makes decisions and a charging unit that performs charging according to the time or amount selected in the interface unit.

Description

Charger connected to energy storage device and method of providing user interface of charger {CHARGER CONNECTED TO ENERGY STORAGE SYSTEM AND METHOD OF PROVIDING USER INTERFACE OF CHARGER THEREOF}

The present invention relates to a charger connected to an energy storage device and a method for providing a user interface for the charger. More specifically, it relates to a method for a charger to perform charging and provide a user interface by reflecting the energy supply situation.

An Energy Storage System (ESS) is a device that stores electricity in batteries and then supplies power to the grid. Energy storage devices can perform charging and discharging.

Recently, as the use of electric vehicles has expanded, electric vehicle chargers are being placed in various spaces. However, the use of electric vehicle chargers increases electricity usage on the grid and can affect other electricity usage in the space. In particular, when electricity usage increases rapidly, there is a problem that the use of electric vehicle chargers is limited.

Accordingly, there is a need for a method to stably perform charging in a space where a charger is placed and to provide a user interface for this.

The problem that the present invention aims to solve is that an energy storage device assists the charger's power use to stabilize the power supply of the grid and the charger accordingly provides a charging service.

The problem that the present invention aims to solve is that an energy storage device stabilizes the power supply of the grid by assisting the charger's power use according to the power usage situation, and the charger provides a charging service accordingly.

The problem that the present invention aims to solve is to enable a stable supply of power by an energy storage device supplying power to a charger when grid power is cut off or power supply is unstable.

The problem that the present invention aims to solve is to enable a stable supply of power by energy storage devices supplying power to other areas connected to the grid when grid power is cut off or power supply and demand are unstable.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned here will be clearly understood by those skilled in the art from the description below.

The energy storage device according to an embodiment of the present invention is electrically connected to a grid that supplies power to the energy storage device, a charger, and other loads excluding the energy storage device and the charger.

A charger according to an embodiment of the present invention includes a power supply unit that receives power from one or more supply sources of the grid or an energy storage device, an interface that allows selection of either a charging amount method or a charging time method, and a charging method according to the selected method. An interface unit that provides an interface for setting the charging amount or charging time, a charger control unit that determines the charging unit of the charging amount or charging time depending on the type of supply source, and a charging unit that performs charging according to the time or amount selected in the interface unit. Includes.

A method of providing a user interface according to an embodiment of the present invention involves switching the power supplied from the power grid and the energy storage device according to the control of the energy storage device to provide stable charging in response to changes in the power supply situation. ) or a method in which the charger charges an object that needs to be charged using the power supplied after receiving it through power supply merging. The first screen allows the charger to select either the charging amount method or the charging time method. A step of receiving the user's input selection by displaying an interface on the screen, and the charger receiving the user's selection input by displaying a second screen interface on the screen with detailed information about the charging time method or charging cost method selected through the first screen interface. It includes the step of displaying charging status-related information on the screen through a third screen interface as charging progresses based on detailed information related to the charging time method or charging cost method selected through the step and the second screen interface.

When an embodiment of the present invention is implemented, the energy storage device can stabilize the power supply of the grid by assisting the charger's power use, and accordingly the charger can provide a stable charging service.

When an embodiment of the present invention is implemented, the energy storage device can stabilize the power supply of the grid by assisting the charger's power use depending on the power usage situation, and the charger can accordingly provide a stable charging service.

When implementing an embodiment of the present invention, the energy storage device supplies power to the charger when grid power is cut off or power supply is unstable, thereby enabling a stable supply of power.

When an embodiment of the present invention is implemented, the energy storage device supplies power to another area connected to the grid when grid power is cut off or power supply is unstable, thereby enabling a stable supply of power.

The effects provided by the present invention are not limited to the effects mentioned above, and other effects not mentioned herein will be clearly understood by those skilled in the art from the description below.

Figure 1 is a diagram showing the arrangement of an energy storage device in a space and the configuration of power supply with other electric devices according to an embodiment of the present invention.
Figure 2 is a diagram showing a configuration in which a charger receives power from an energy storage device and a power distribution device according to an embodiment of the present invention.
Figure 3 is a diagram showing the detailed operation of the charger according to an embodiment of the present invention.
Figure 4 is a diagram showing a configuration in which a charger receives power from an energy storage device according to another embodiment of the present invention.
Figure 5 is a diagram showing the detailed operation of an energy storage device according to an embodiment of the present invention.
Figure 6 is a diagram showing the configuration of an energy storage device according to an embodiment of the present invention.
Figure 7 is a diagram showing a process in which a controller according to an embodiment of the present invention controls an energy storage device according to the amount of power in the grid.
Figure 8 is a diagram showing the arrangement and operation of an energy storage device and charger according to an embodiment of the present invention.
Figure 9 is a diagram showing the arrangement and operation of an energy storage device and charger according to another embodiment of the present invention.
Figure 10 is a diagram showing a process in which an energy storage device operates in response to an increase in power use in the grid according to an embodiment of the present invention.
Figure 11 is a diagram showing the configuration of an energy storage device according to another embodiment of the present invention.
Figure 12 is a diagram showing the configuration of a charger according to an embodiment of the present invention.
Figure 13 is a diagram showing a process in which a charger displays an interface required for charging or charging according to an embodiment of the present invention.
Figure 14 is a diagram showing a process in which a charger displays an interface required for charging or charging according to another embodiment of the present invention.
Figure 15 is a diagram showing the process of determining a charging unit according to an embodiment of the present invention.
Figure 16 is an interface for selecting a charging method according to an embodiment of the present invention.
17 to 24 are diagrams showing a charging interface according to an embodiment of the present invention.
Figure 25 is a diagram showing the charging process after starting charging according to an embodiment of the present invention.
Figure 26 is a diagram showing an interface for setting the charging amount according to another embodiment of the present invention.

The advantages and features of the invention presented in this specification and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed in the present specification and will be implemented in various different forms, and the present embodiments are merely intended to ensure that the disclosure of the present invention is complete and to provide a general understanding of the technical field to which the present invention pertains. It is provided to fully inform those with knowledge of the scope of the invention, and the present invention is only defined by the scope of the claims. The same reference numerals may refer to the same components throughout this specification.

Additionally, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description may be omitted.

Additionally, when describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, order, or number of the components are not limited by the term. When a component is described as being “connected,” “coupled,” or “connected” to another component, that component may be directly connected or connected to that other component, but there are no other components between each component. It should be understood that may be “interposed” or that each component may be “connected,” “combined,” or “connected” through other components.

Hereinafter, in this specification, we will look at technology for controlling the charging or discharging of energy storage devices installed in spaces such as buildings, houses, subways, and public places according to the electricity usage status of other electric devices in the space. In addition, we look at technology in which the energy storage device controls the charger according to the aforementioned electricity usage situation. Additionally, when the power usage load of other electrical devices in a space increases, we look at technology in which an energy storage device supplies power to other electrical devices.

Figure 1 is a diagram showing the arrangement of an energy storage device in a space and the configuration of power supply with other electric devices according to an embodiment of the present invention. Figure 1 shows an energy storage system (ESS) 100 and other devices that supply power to the Supportive Power Region 30 and the Primary Power Region 40. It shows. The grid corresponding to the power source 10 can supply power to the Supportive Power Region 30 and the Primary Power Region 40. The energy storage device (ESS) 100 may be placed in the supportive power area 30 .

The power source 10 supplies power to the corresponding space and, in one embodiment, includes an AC grid. The power supplied by the power source 10 is distributed to two or more power areas 30 and 40 by a predetermined power distribution device 20.

In one embodiment, the power distribution device 20 may supply power to the supportive power area 30 and the primary power area 40. The power distribution device 20 uses a switchboard as an example.

The primary power area 40 includes areas where power is supplied from the power source 10, excluding the supportive power area 30. The energy storage device according to an embodiment of the present invention can supply power to the supportive power area 30 and the primary power area 40, and can also be disposed in the supportive power area 30.

An energy storage device (ESS, 100) and one or more chargers (50a, ..., 50n) may be disposed in the supportive power area (30). A plurality of electric devices 60a, ..., 60n may be disposed in the primary power area 40. Additionally, a separate ESS that is different from the energy storage device 100 disposed in the supportive power region 30 may be disposed in the primary power region 40. That is, a separate ESS that is distinct from the energy storage device 100 may also be placed as an electric device (for example, 60 m) within the primary power area 40.

In the embodiment of FIG. 1, the power distribution device 20 may distribute power to the supportive power area 30 and the primary power area 40. A configuration without the power distribution device 20 may also be included in an embodiment of the present invention. In this case, the power supplied from the power source 10 is connected to the supportive power area 30 and the primary power area 40 by one power line. ) can be provided. Additionally, the energy storage device 100 and chargers 50a, ..., 50n that receive some or all of the power from the energy storage device 100 may be disposed in the supportive power area 30.

The energy storage device (ESS, 100) according to an embodiment of the present invention is capable of supplying power to the supportive power area 30 and the primary power area 40 within the maximum range of power supplied by the power source 10. You can. The energy storage device 100 can charge or discharge according to the electricity demand or expected demand used in the two areas 30 and 40.

For this purpose, a power meter 210 may be placed connected to the supportive power area 30. Alternatively, the power meter 210 may be disposed within the supportive power area 30.

Additionally, a power meter 220 may be placed connected to the primary power area 40. Alternatively, the power meter 220 may be placed within the primary power area 40.

The power meters 210 and 220 are, in one embodiment, a power meter and measure the amount of power being used in the installed area. The power meters 210 and 220 transmit the measured value (amount of power) to the energy storage device 100.

Additionally, according to an embodiment of the present invention, a separate power meter may be placed in the power source 10. In this case, the energy storage device 100 can check the amount of power consumed by the power source 10 in real time.

According to another embodiment of the present invention, the energy storage device 100 is configured to measure the power consumed by the power meter 210 in the supportive power area 30 branched from the power distribution device 20 and the power consumption in the primary power area 40. The total amount of power consumed by the power source 10 can be calculated by adding up the amount of power consumed by the power meter 220. This may vary depending on the implementation method, and the present invention is not limited thereto.

Additionally, the energy storage device 100 may include the power meter 210 of the above-described supportive power region 30 as a component. Additionally, the energy storage device 100 may receive the power usage of the primary power area 40 from the power meter 220 disposed in the primary power area 40 according to a prearranged communication protocol.

In this specification, the energy storage device includes an energy storage device including a vanadium ion battery, but the present invention is not limited thereto. For example, in this specification, energy storage devices include vanadium redox battery (VRB), polysulfide bromide battery (PSB), and zinc-bromine battery (ZBB).

When applying the embodiment of FIG. 1, when the charger 50 charges an electric vehicle or another device that requires charging, charging can be performed according to charging conditions required by the electric vehicle or other device. For example, when high current charging is requested, the charger 50 performs high current charging. According to the control of the energy storage device 100, the power source 10 and the power of the energy storage device 100 are provided to the charger 50.

The energy storage device 100 may control power to be supplied to the charger 50 only from the power source 10 according to the amount of power supplied by the power source 10 and the amount of power used by the primary power area 40. Additionally, the energy storage device 100 may provide only the power of the energy storage device 100 to the charger 50 depending on the amount of power supplied by the power source 10 and the amount of power used by the primary power area 40. Alternatively, the energy storage device 100 may provide the power of the energy storage device 100 as part of the power requested by the charger 50. As a result, the charger 50 can charge electric vehicles or other devices with power supplied from both the power source 10 and the energy storage device 100.

The energy storage device 100 adjusts the amount of power to be provided to the charger 50 according to the power supply situation of the power source 10 or the power use situation of the primary power area 40, resulting in a change in the amount of power of the power source 10. Even in this case, the charger 50 can stably charge electric vehicles or other devices. In particular, when the charger 50 performs high-current charging, the energy storage device 100 charges the charger 50 at a certain level depending on the power supply situation of the power source 10 or the power use situation of the primary power area 40. By supplying more power than the above, the charger 50 can stably perform high-current charging.

And when the charger 50 performs low-current charging, the energy storage device 100 receives a charger ( 50) can be supplied with power and charged.

FIG. 2 is a diagram showing a configuration in which a charger receives power from the energy storage device 100 and the power distribution device 20 according to an embodiment of the present invention. The charger 50 may receive power from the power distribution device 20 and the energy storage device 100. In more detail, the energy storage device 100 may receive information about the amount of power used by the charger 50 from the power meter 212. The energy storage device 100 may receive information about the amount of power used in the primary power area 40 from the power meter 220.

In the embodiment of FIG. 2, the charger 50 may receive power from the power distribution device 20 (P1). In one embodiment, this means that power is supplied from the grid, that is, the power source 10. In addition, the energy storage device 100 compares the information on the amount of power received from the power meters 210 and 220 with the maximum amount of power that can be provided by the power source 10 to assist with part or all of the amount of power to be used by the charger 50. can do.

The energy storage device 100 can supply power to the charger 50 (P2). The charger 50 may switch or merge the supplied power under the control of the energy storage device 100. The charger 50 can supply power according to a charging request from an external device (P5).

The energy storage device 100 may receive power from the power distribution device 20 (P3). And the energy storage device 100 can supply power to the primary power area 40 (P4). Power supplied by the energy storage device 100 may be supplied to the primary power area 40 via the power distribution device 20. That is, the direction of power supply between the energy storage device 100 and the power distribution device 20 may be bidirectional.

The power supply (P4) of the energy storage device 100 may be determined based on the power demand of the primary power area 40, the maximum amount of power that the power source 10 can supply, etc.

Therefore, when the power amount of the grid 10 measured by the power meter 220 is below a preset standard, the energy storage device 100 performs high current discharging so that the charger 50 performs high current-rate charging. can do. The energy storage device 100 continuously monitors the amount of power in the grid 10 while discharging at high current so that the charger 50 can charge at high current.

As a result, the energy storage device 100 can stop discharging high current to the charger 50 when the power usage of the grid 10 increases. Alternatively, the energy storage device 100 may perform high-current discharge to support high-current charging of the charger 50 depending on its own energy storage status.

When the energy storage device 100 supports the high-speed charging and discharging functions of the charger 50, the energy storage device 100 can flexibly respond to the power situation of the grid 10 by monitoring the amount of power in the grid 10. In particular, the energy storage device 100 can predict times when grid 10 power usage is low by accumulating and storing information about past power usage times of the grid 10. As a result, the energy storage device 100 can prepare for the case where power use of the grid 10 increases rapidly during the high-speed charging and discharging process of the charger 50.

In addition, the above process can be applied even when high-speed charging of the energy storage device 100 is required. That is, the energy storage device 100 can receive power from the grid 10 and perform high-speed charging of the energy storage device 100. In this process, it is possible to flexibly respond to the power situation of the grid 10 by monitoring the amount of power of the grid 10 as described above.

Figure 3 is a diagram showing the detailed operation of a charger according to an embodiment of the present invention.

The charger 50 can receive power from two power supply lines (P2 and P1). Charger 50 may include components 55 that provide merging/switching functionality. When power is not supplied through P2, the charger 50 can provide a charging service to an external device (eg, electric vehicle, EV) using power supplied from P1.

Additionally, when power is supplied through P2, the charger 50 can provide a charging service to an external device (EV) using power supplied from both P1 and P2. In this case, the amount of power used by the charger 50 through P1 is reduced compared to when power is supplied only through P1.

Additionally, the charger 50 can provide a charging service to an external device (EV) by receiving power only through P2. In this case, the amount of power used by the charger 50 through P1 is 0.

The energy storage device 100 can control the operation of the charger 50. In this case, according to the control of the energy storage device 100, the charger 50 can determine the amount of power to be used through P1 and P2. Alternatively, the charger 50 may adjust the amount of power used through P1 according to the amount of power supplied from P2. The energy storage device 100 can control the charger 50 to adjust the amount of power the charger 50 uses through P1 by increasing or decreasing the amount of power supplied to the charger 50.

Figure 4 is a diagram showing a configuration in which a charger receives power from an energy storage device according to another embodiment of the present invention. The charger 50 may receive power from the energy storage device 100. In more detail, the energy storage device 100 may receive information about the amount of power used by the charger 50 from the power meter 212. The energy storage device 100 may receive information about the amount of power used in the primary power area 40 from the power meter 220.

In the embodiment of FIG. 4, the charger 50 may receive power from the energy storage device 100, and the energy storage device 100 may supply charged power to an internal battery or from the power distribution device 20. The supplied power can be supplied by transferring it to the charger 50 (P2). Alternatively, the energy storage device 100 may adjust the amount of power supplied and the amount of transmission of the amount of power supplied from the power distribution device 20.

Let's take a closer look at the process of adjusting the power supply ratio. The energy storage device 100 compares information about the amount of power to be used by the charger 50, the amount of power used in the primary power area 40, and the maximum amount of power that can be provided by the power source 10 to be used by the charger 50. Part or all of the electric power can be subsidized. The energy storage device 100 may supply power charged in the battery to the charger 50 (P2). And the charger 50 can supply power according to a charging request from an external device (P5).

The energy storage device 100 may receive power from the power distribution device 20 (P3). And the energy storage device 100 can supply power to the primary power area 40 (P4). The power supplied by the energy storage device 100 is supplied to the primary power area 40 via the power distribution device 20. That is, the direction of power supply between the energy storage device 100 and the power distribution device 20 may be bidirectional.

The power supply (P4) of the energy storage device 100 may be determined based on the power demand of the primary power area 40, the maximum amount of power that the power source 10 can supply, etc.

Figure 5 is a diagram showing the detailed operation of the ESS according to an embodiment of the present invention.

The energy storage device 100 may supply power (P3) supplied from the power distribution device 20 and power (P6) charged from the battery inside the energy storage device 100 to the charger 50 (P2). Energy storage device 100 may include a component 155 that provides merging/switching functions. The energy storage device 100 compares the amount of power requested by the charger 50, the amount of power used in the primary power area 40, and the maximum amount of power that can be supplied by the power source 10, and when the power supply and demand are stable, it is connected through P3. The supplied power can be supplied to the charger 50.

In addition, if the power supply and demand are not stable in the above-described comparison process, the energy storage device 100 supplies only a portion of the power supplied through P3 to the charger 50 and the charger 50 requests the power charged from the internal battery. The remaining amount of power can be supplied (P6).

In addition, if the energy storage device 100 is unable to supply power P3 in the above-described comparison process, the energy storage device 100 may supply power charged from the internal battery to the charger 50 (P6).

Figure 6 is a diagram showing the configuration of an ESS according to an embodiment of the present invention. The energy storage device 100 includes an energy storage module 110 including a battery and a controller 150.

The controller 150 may determine charging or discharging of the energy storage module using the power measurement results of the supportive power area and the power measurement results of the primary power area. Additionally, the controller 150 may determine whether to discharge to one or more chargers arranged in the supportive power area or to one or more of the primary power areas.

The energy storage device 100 includes a pack BMS 120 that manages charging and discharging of the energy storage module 110. Additionally, the energy storage device 100 may optionally include a Power Management System (PMS) 130 and a Power Conversion System (PCS) 140. If the energy storage device 100 includes both the PMS 130 and the PCS 140, it may be referred to as an integrated ESS.

Alternatively, depending on the configuration of the energy storage device 100, the PMS 130 and PCS 140 may be physically separated from the energy storage device 100 and configured as separate devices. The PMS 130 and PCS 140 can be operated independently as separate devices and can control the operation of the energy storage device 100 by exchanging information through communication with the energy storage device 100.

As shown, the energy storage module 110 of the energy storage device 100 may be composed of one or more battery modules and module BMSs that manage the battery modules. One embodiment of the energy storage module 110 includes a battery module-module BMS as one set and a battery pack composed of one or more sets.

The battery of the energy storage module 110 can be charged with electricity via the PCS 140. The PCS 140 can receive electricity and store it in a battery or emit electricity to the system. In this process, the PCS 140 can convert AC/DC or incoming/outgoing voltage or frequency.

The PMS 130 exchanges information using communication with the PCS 140 and can provide the PCS 140 with information necessary for charging or discharging or controlling the battery.

The module BMS manages the battery by monitoring the charging status, discharge status, temperature, voltage, and current of the battery. The pack BMS 120 is a battery management system for the entire battery pack.

The controller 150 uses the power measurement results of the supportive power area and the power measurement results of the primary power area to determine charging or discharging of the energy storage module 110, or one or more chargers disposed in the supportive power area. You can decide whether or not to discharge using the primary power area. Additionally, according to one embodiment, the controller 150 may be integrated with the PMS 130 and operate as a single component.

According to one embodiment of the present invention, the controller 150 may be an independent component. According to another embodiment of the present invention, the controller 150 may be implemented within the PMS 130, and the PMS 130 may provide the controller functions described herein.

Figure 7 is a diagram showing a process in which a controller according to an embodiment of the present invention controls the ESS according to the amount of power in the grid.

The controller 150 may store the maximum power amount (Grid_Max) of the grid that supplies power to the primary power area and the supportive power area, that is, the power source 10 (S301). Maximum power amount (Grid_Max) refers to the maximum amount of power that can be used in the grid. This allows the aforementioned power source 10 to provide information regarding the maximum amount of power to the controller 150. Alternatively, the maximum power amount of the power source 10 may be input to the controller 150 in advance. The maximum amount of power can increase or decrease depending on the power supply situation in the future, and the controller 150 can update information about the maximum amount of power input according to the increase or decrease.

Thereafter, the power meter 220 measures the power usage (Primary_Usage) of the primary power area 40 (S302). In one embodiment, this measures power usage (load usage) generated in areas other than the supportive power area 30 where the energy storage device 100 is placed. The energy storage device 100 may receive the power usage (Primary_Usage) of the primary power area 40 from the power meter 220 disposed in the primary power area 40 according to a prearranged communication protocol.

Additionally, according to another embodiment of the present invention, in step S302, the energy storage device 100 or the controller 150 may receive the total power consumption of the grid and the power usage of the primary power area. For example, in FIG. 1, a separate power meter may be placed between the power source 10 and the power distribution device 20. The controller 150 may receive information on the total power consumption of the grid from a power meter disposed between the power source 10 and the power distribution device 20 and monitor the power usage status of the grid.

Next, the controller 150 determines whether to use the charger 50 arranged in the supportive power area 30 (S303). If there are multiple chargers 50, the controller 150 can determine whether to use each charger. If the charger 50 is not in use, the controller 150 performs step S307. The controller 150 compares the amount of power (S307). If Grid_Max is greater than Primary_Usage by comparing Grid_Max and Primary_Usage, the controller 150 determines the amount of ESS charging and proceeds with charging (S311).

Then, the controller 150 measures the State of Charge (SOC) of the ESS (S312) and ends charging if the SOC is greater than the reference value. Meanwhile, by measuring the SOC of the energy storage device 100 (S312) and repeating the process after S302 when the SOC is below the standard value, charging of the ESS can be controlled.

Meanwhile, if Grid_Max is less than Primary_Usage in S307, the controller 150 determines the amount of discharge power of the energy storage device 100 and controls the energy storage device 100 so that the energy storage device 100 discharges into the primary power area 40. Do it (S313). As a result, excess grid power is assisted by discharge of the energy storage device 100.

If the charger is in use in S303, the controller 150 measures the amount of power required for the charger (Charging_Request) (S304). At this time, it is assumed that the SOC of the ESS is above the standard value. Then, the controller 150 compares the amount of power (S305), comparing the sum of Charging_Request and Primary_Usage (Charging_Request+Primary_Usage) and Grid_Max.

As a result of the comparison, if Grid_Max is less than (Primary_Usage+Charging_Request), the controller 150 determines the amount of discharge power of the energy storage device 100 and causes the energy storage device 100 to discharge to the primary power area 40. ) is controlled (S313). As a result, excess grid power is assisted by discharge of the energy storage device 100.

Additionally, if Grid_Max is greater than (Primary_Usage+Charging_Request) as a result of the comparison in S305, the controller 150 checks whether the difference (the amount of spare power in the grid, see Equation 1 below) is more than the grid spare reference value (S306).

[Equation 1]

Free power in grid = Grid_Max - (Primary_Usage+Charging_Request)

If the amount of spare power in the grid is more than the grid spare reference value, the power amount is sufficient, so the controller 150 determines the amount of charging power of the energy storage device 100 and controls the energy storage device 100 to charge the energy storage device 100. Do it (S314). This means that the energy storage device 100 is charged with a sufficient amount of grid power.

On the other hand, if the amount of spare power in the grid is less than the grid spare reference value, there is a high possibility that the power demand of the supportive power area 30 and the primary power area 40 will not be met by the amount of power in the grid in the future, so the controller 150 The energy storage device 100 enters the discharge standby mode (S315).

In FIG. 7 , in steps S311 and S314 of charging the ESS, the controller 150 may perform a high current charging process of the battery. Additionally, the controller 150 continuously receives power measurement results in the primary power area, and when the spare power of the grid becomes low, the controller 150 can charge the battery at low current or enter a discharge standby mode as in S315. Of course, even in the discharge standby mode, the controller 150 can determine whether to charge the battery at low power or high current by monitoring the overall grid power situation and the SOC of the battery.

Figure 8 is a diagram showing the arrangement and operation of the ESS and charger according to an embodiment of the present invention. Figure 8 shows the arrangement of a vanadium ion battery ESS (VIB ESS) 100a, which is an embodiment of the ESS. The electricity supply process is in the order of the grid power source 10, the substation room 5, the power meter 205, and the power distribution device 20a, which uses the main distribution board as an example, and the VIB from the power distribution device 20a Electricity is supplied to the ESS (100a), the charger (50), and loads other than the ESS. A power meter 205 is placed on the grid main power line, and power meters 211, 212, and 220 may be placed for each line in each area 30a and 40a. Information on power consumption for each area and overall is transmitted to the VIB ESS (100a).

The previously described supportive power area 30a and primary power area 40a are partitioned. The amount of power branched from the power distribution device 20a can be measured by each power meter 211, 212, and 220. And the controller placed within the VIB ESS (100a) can receive the power consumption information measured by each power meter. At this time, the VIB ESS (100a) may include a PMS, and in this case, the PMS may provide the function of a controller.

As seen in FIG. 7, the VIB ESS (100a) stores information on the maximum amount of power (Grid_Max) that can be used in the grid. Additionally, the VIB ESS (100a) may receive information about the amount of power supplied to loads other than the ESS (for example, the amount of power being used by 40a) from the power meter 220 disposed at 40a. Additionally, in one embodiment of the present invention, the VIB ESS (100a) may receive the entire grid power consumption (Grid_Usage) from the power meter 205.

The reception method can be either periodic reception or real-time reception. In the case of periodicity, the period may be changed according to changes in the amount of power used in the primary power area 40a. For example, the controller 150 may set the reception period to 5 minutes at night when there is little change in power amount, and set the reception period to 1 minute during the day when there is a large change in power amount.

The VIB ESS (100a) may control charging or discharging of the VIB ESS (100a) so that grid power use can be optimized according to the amount of power used in the primary power area (40a).

The driving modes of the VIB ESS (100a) include charging mode, discharging mode, and standby mode. In the case of charging mode, the VIB ESS (100a) determines the ESS charging amount, proceeds with charging according to the SOC standard value of the ESS, and then terminates the charging mode.

In the case of discharge mode, the VIB ESS (100a) receives the required power amount information (Charging_Request) of the charger (50) from the power meter (212). Then, the sum of the amount of power received from the power meter 220 in the primary power area 40a (Primary_Usage) and the amount of power required by the charger 50 (Charging_Request) is compared with Grid_Max to determine whether to discharge. The decision process for this is the same as previously seen in FIG. 7.

Additionally, when Primary_Usage is greater than Grid_Max or when grid power is cut off, the VIB ESS (100a) can discharge the amount of power charged into the primary power area (40a). For example, when the VIB ESS 100a, like P10, discharges power to the power distribution device 20a, the power distribution device 20a can supply power to the primary power area 40a.

Additionally, the VIB ESS (100a) may assist with all or part of the amount of power output from the charger (50) (P11). For example, if the value obtained by subtracting the power usage of the primary power area (40a) from the grid maximum power amount (available power amount) is less than the power amount output from the charger 50 (a shortfall in the charger charging power amount occurs), VIB ESS (100a) It can support the amount of power that is short or more than the shortfall.

In discharge mode, the VIB ESS (100a) can receive the entire grid power consumption from the power meter (205).

For example, the VIB ESS (100a) receives the required power amount information (Charging_Request) of the charger 50 from the power meter 212. Then, information on the total power consumption of the grid (Grid_Usage) is received from the power meter 205. Then, the sum of the total grid power consumption (Grid_Usage) and the power demand information (Charging_Request) of the charger 50 is compared with Grid_Max to determine whether to discharge. The decision process for this is the same as previously seen in FIG. 7.

In addition, when Grid_Usage is Grid_Max or exceeds Grid_Max and grid power is cut off, VIB ESS (100a) can discharge the amount of power charged into the primary power area (40a). For example, when the VIB ESS 100a, like P10, discharges power to the power distribution device 20a, the power distribution device 20a can supply power to the primary power area 40a.

Additionally, the VIB ESS (100a) may assist with all or part of the amount of power output from the charger (50) (P11). For example, if the value obtained by subtracting the total grid consumption power (Grid_Usage) from the grid maximum power amount (available power amount) is less than the power amount output from the charger 50 (a shortfall in the charger charging power amount occurs), the VIB ESS (100a) is responsible for the shortfall or It is possible to supplement the amount of power exceeding the shortfall.

In the embodiment of FIG. 8, VIB ESS 100a may maintain standby mode. If the SOC of the VIB ESS (100a) is above the standard value, power usage in the grid can be monitored without a separate charging process. Meanwhile, if the SOC of the VIB ESS (100a) is below the standard value, charging can be performed by determining the charging amount according to the current grid power status. Of course, if it is in standby mode and the SOC is above the standard value, the VIB ESS (100a) can supply power to the primary power area (40a) (P10) or to the charger (50) when the amount of power in the grid increases (P11) ).

When applying the embodiment of FIG. 8, the VIB ESS (100a) can optimize the amount of power in the grid according to the power usage situation in the grid. For example, the VIB ESS (100a) can assist in the amount of power to minimize losses due to excessive peak power and suppress grid overload.

Since the VIB ESS (100a) supplies power to the primary power area (40a) and the charger (50) together with the grid under certain circumstances, stable power supply is possible. In addition, the VIB ESS (100a) can assist in power supply to the grid by receiving measured values of power consumption for each configuration and calculating the power loss. For example, if the grid output is 100, but the charger side output is detected as 95, VIB ESS (100a) can assist by 5.

This embodiment can be efficiently implemented in the case of the VIB ESS (100a). For example, batteries that generate heat at high output and affect battery life have limitations in supporting the grid. On the other hand, in the case of VIB, stable high output is possible. In addition, unlike ESS composed of batteries that may have limitations in charging and discharging, VIB ESS (100a) is capable of controlling input and output flow with high output, and in the event of a grid power outage, both the grid and charger can be assisted with high output. In particular, high output is possible even in the case of momentary power outages or power outages, ensuring a stable supply of grid power.

In addition, in the case of VIB ESS (100a), when power usage in the grid is low (if there is spare power), charging can be done at a high C-Rate (Current Rate), improving the efficiency of grid power use.

Accordingly, the controller 150 of the VIB ESS 100a may determine either high current charging or low current charging of the battery after receiving the power measurement result of the primary power area. If the power amount in the primary power area is below a certain standard (for example, 80% or less) compared to the total grid usage, the VIB ESS (100a) can be quickly charged through high current charging.

Conversely, if the power amount in the primary power area exceeds a certain standard (e.g., exceeds 80%) compared to the entire grid usage, the VIB ESS (100a) is continuously charged through low-current charging to lower the load on the entire grid and later The charged power can be used to support grid power.

Figure 9 is a diagram showing the arrangement and operation of an ESS and a charger according to another embodiment of the present invention. Unlike FIG. 8, the configuration of FIG. 9 is an embodiment in which the power distribution device 20a, which functions as a main distribution board, and the power distribution device 20b, which functions as an ESS distribution board, are separated. In addition, the power distribution device 20c, which functions as a DC distribution board (container) that supplies power to the VIB ESS 100b, is separately arranged.

The power distribution device 20c may be divided into one or more units, and the present invention is not limited to a specific power distribution device configuration method. The power distribution device 20c may be selectively arranged depending on the configuration and arrangement of the VIB ESS 100b.

9 shows the PMS 130b and the PCS 140b separately, but the present invention is not limited thereto, and the PMS 130b and the PCS 140b may be configured within the VIB ESS 100b. The PMS (130b) can be integrated with the above-described controller 150 to control the driving mode, such as charging or discharging, of the VIB ESS (100b).

Additionally, the power bank 51 may also be a component of the charger 50 or a component independent of the charger 50, depending on how the invention is implemented. In the configuration of FIG. 9, the VIB ESS (100b) can assist the power of the entire grid. VIB ESS (100b) stores information about the maximum output amount of the power grid. And the VIB ESS (100b) can receive the entire grid power consumption from the power meter (205). Alternatively, the VIB ESS (100b) may receive measurements of load usage other than the ESS and determine the amount of power available for grid use. The VIB ESS (100b) may control charging or discharging of the VIB ESS (100b) by receiving information on the total amount of power consumed in the grid or by receiving measurements of load usage other than the ESS.

Loads other than the ESS indicate loads for power use other than the VIB ESS (100b) and charger (50), and are within the primary power area (40b), such as power use within buildings, power use at home, servers, subways, etc. means the load of

Information about the maximum grid power amount can be input to the VIB ESS (100b) in advance, and if the grid maximum power amount changes, the VIB ESS (100b) stores the changed value. The input value may be stored in the ESS (100b) and maintained for a certain period of time. VIB ESS (100b) can store grid maximum power amount (Grid_Max) information in a manner such as 380V AC/150KW.

When applying the embodiment of FIG. 9, the grid, such as the power source 10, supplies power to the energy storage device 100b, the charger 50, and other loads (loads other than the ESS) excluding the energy storage device and the charger. In addition, the energy storage device 100b includes one or more power meters 205, 211, 212, and 220 that measure the amount of power of the grid, energy storage device 100b, charger 50, and other loads (loads other than ESS). can do.

In addition, the controller of the energy storage device 100b determines charging or discharging of the energy storage module using one or more of the power amount of the grid or the power amount of other loads measured by the power meter (205, 211, 212, 220). , you can decide to supply power to the charger or other load.

In the case of an embodiment in which the amount of power of the grid can be confirmed by the amount of power of other loads (loads other than the ESS), the energy storage device 100b uses the value measured by the power meter 220 placed in the load other than the ESS to measure the power of the energy storage module. You can decide to charge or discharge, or to supply power to a charger or other load.

On the other hand, when the power amount of the grid cannot be confirmed based on the power amount of other loads or when it is necessary to check the power amount of the grid in real time without error, the energy storage device 100b is measured by the power meter 205 placed in the power source 10. One value can be used to determine charging or discharging of an energy storage module, or supplying power to a charger or other load.

When applying an embodiment of the present invention, ESS charging can be performed when the power supply of the grid is stable. Conversely, if the power supply of the grid is not stable, the ESS can supply power to the primary power area 40b or the supportive power area 30b.

An energy storage device according to an embodiment of the present invention includes an energy storage module including a battery, one or more power meters that measure the amount of power of one or more of the grid, energy storage device, charger, and other loads, and the power meter measures the amount of power. It includes a controller that determines charging or discharging of an energy storage module using one or more of the power amount of a grid or the power amount of other loads, or determines supply of power to a charger or other loads.

A method of controlling an energy storage device according to an embodiment of the present invention includes the steps of a controller of the energy storage device receiving information on the maximum output power amount of the grid, and a power meter of the energy storage device measuring the grid, the energy storage device, the charger, and Measuring one or more of the power amount of other loads and the controller determining charging or discharging of the energy storage module of the energy storage device using one or more of the power amount of the grid or the power amount of other loads measured by the power meter, Includes determining whether to supply power to a charger or other load.

Figure 10 is a diagram showing the process in which the ESS operates in response to an increase in power use in the grid according to an embodiment of the present invention. The controller 150 may calculate the expected usage amount of power in the primary power area and determine a discharge standby mode for discharging to one or more of the primary power area or the charger.

The controller 150 stores the maximum amount of power (Grid_Max) available in the grid (S321). This allows the aforementioned power source 10 to provide information regarding the maximum amount of power to the controller 150. Alternatively, the maximum power amount of the power source 10 may be input to the controller 150 in advance.

Afterwards, the power meter 220 measures the power usage (Primary_Usage) in the primary power area, and the controller 150 calculates the expected usage within N hours (S322). The controller 150 may accumulate and store power usage (Primary_Usage) information in the primary power area. The controller 150 monitors the power usage (Primary_Usage) of the primary power area in real time and calculates the expected usage within N hours when the power usage increases.

At this time, the controller 150 can calculate the expected usage amount by reflecting seasonal factors. In one embodiment, the controller 150 may calculate the expected usage based on information about the time period when the air conditioner is likely to be used in the space (building, house, etc.) (for example, 2 PM to 4 PM, etc.). there is.

As a result, the controller 150 may determine whether the current power usage (Primary_Usage) in the primary power area is within a stable range or below the standard value, but the expected usage within N hours is outside the stable range or exceeds the standard value (S323 ). In this case, the controller 150 enters a standby mode to support power usage (Primary_Usage) in the primary power area in preparation for an increase in power usage.

The controller 150 checks whether the charger 50 is in use (S324). When the charger 50 is in use, charging can be controlled to proceed only with grid power (S325). This is to preserve the power charged in the energy storage device 100 to support power use in the primary power area.

Additionally, when the charger 50 is not in use or when the charger 50 is charging only with grid power, the controller 150 measures the SOC of the energy storage device 100 (S326). As a result of the measurement, if the SOC of the energy storage device 100 is below the reference value (S327), charging of the energy storage device 100 is performed (S328).

When applying the process of FIG. 10, when the power usage (Primary_Usage) in the primary power area increases, the energy storage device 100 can provide power assistance.

Figure 11 is a diagram showing the configuration of an ESS according to another embodiment of the present invention. Power supplied from the outside is applied to the battery pack 110d via a ground fault device (GFD) 127d and a switch gear 125d. The detailed configuration of the switchgear 125d includes a switched-mode power supply (SMPS) 121d and a pack BMS 120d as an example.

The pack BMS (120d) can perform control (128d) and sensing (129d), and can control LEDs and relays and sense current and voltage.

In FIG. 11, the switch gear 125d and the PMS 130d may form the controller 150.

When applying the above-described embodiment, the power supply network includes two or more power sources including a power grid and at least one energy storage system (energy storage device).

The energy storage system (ESS) 100 receives a power charging request from the power charger 50, which is used to charge an object containing a rechargeable battery.

The energy storage system 100 compares the sum of the charger power demand (Charging Request) 50 and the amount of power defined for primary use (Primary_Usage) with the maximum amount of power available from the power grid (Grid_Max).

In addition, if the maximum amount of power available from the power grid (Grid_Max) is less than or equal to the sum value, the energy storage system 100 may perform the first procedure. Otherwise, the energy storage system 100 may perform the second procedure. .

Then, the energy storage system 100 selectively performs the first procedure or the second procedure to provide power to the power charger from the power grid alone, the energy storage system 100 alone, or the power grid and the energy storage system together. can do.

Here, the amount of power (Primary_Usage) defined for primary use is related to the power used in the primary power area 40 of the power grid. That is, it includes the load of the building, etc.

In one embodiment, the first procedure involves the energy storage system 100 determining and discharging the amount of power discharged from the energy storage system to assist with power exceeding the maximum amount of power available from the power grid (Grid_Max).

In the second procedure, when the amount of spare power of the power grid is greater than the standard value, the energy storage system 100 determines the amount of charging power of the energy storage system and performs charging, so that the spare power of the power grid is used for charging and the spare power of the power grid is equal to the standard value. In the case below, the energy storage system 100 enters the discharge standby mode as an example.

The charger 50 supplies power to the electric vehicle to charge the battery mounted on the electric vehicle. According to various power supply situations, the charger 50 may receive power from the grid (power source) 10 or from the ESS (100). Alternatively, the charger 50 can receive power from both.

Meanwhile, charging for the provided power may vary depending on whether the charger 50 supplies power from the power source 10 or the charger 50 . For example, when the charger 50 receives power from the power source 10 to charge an electric vehicle, the charging unit price per kwh and when the charger 50 receives power from the charger 50 to charge an electric vehicle, the charging unit price per kwh may be different. In addition, the charging unit price may vary depending on the charging time, and the charging unit price may vary depending on the charging speed, such as fast charging/low-speed charging.

Accordingly, the charger 50 can vary the charging system depending on the source of power input for charging, charging speed, charging method, charging time, etc., and provide a charging and charging interface that allows the user to easily check this.

Figure 12 is a diagram showing the configuration of a charger according to an embodiment of the present invention.

The charger control unit 550 controls the operation of the charger 50 and various components 510, 520, 530, and 540 that make up the charger 50.

The interface unit 510 provides interface rules so that the user can input or confirm information in the process of charging various devices such as electric vehicles and electric bicycles from the charger 50. The interface unit 510 may be composed of a touch screen and buttons.

The communication unit 520 transmits and receives information to and from external devices. The communication unit 520 may receive information about the current available power status and whether the input power is input from the grid or the ESS from the ESS 100 or the PMS 130. Additionally, the communication unit 520 may transmit information related to the current charging status of the charger 50 to the ESS 100 or the PMS 130. Alternatively, the communication unit 520 may transmit information related to the current charging situation to another charger.

The charging unit 530 charges other devices (electric vehicles, electric bicycles, electronic products, etc.). The power supply unit 540 receives power from the outside and provides it to the charging unit 530.

The charger control unit 550 outputs the amount, time, options, etc. related to charging to the interface unit 510 according to the source of power supplied to the power unit 540. The charger control unit 550 may control the charger 530 according to the source of power supplied to the power unit 540, the charging option set in the interface unit 510, etc.

In summary, the power unit 540 receives power from one or more supply sources of a grid or an energy storage device. And the interface unit 510 provides an interface for selecting either the charging amount method or the charging time method and an interface for setting the charging amount or charging time according to the selected method.

The charger control unit 550 determines the charging amount or charging unit of charging time depending on the type of supply source. The charging unit 530 charges according to the time or amount selected in the interface unit 510.

13 and 14 show that the charger control unit 550 determines the charging unit according to the supply source. This is a diagram showing the process of determining the maximum charging time or maximum charging amount according to the expected supply amount information from the supply source.

Figure 13 is a diagram showing a process in which a charger displays an interface required for charging or charging according to an embodiment of the present invention. Figure 13 shows the process of proceeding with payment after charging is completed. The user can select the charging unit price displayed by the interface unit 510 of the charger 50 according to the charging amount, charging time, etc. Among the charging methods, selectable options may vary depending on high-speed/low-speed charging, and the charging unit price may change depending on changes in these options.

The charger control unit 550 determines the charging unit according to changes in the supply environment, including the supply source (S330). The charger control unit 550 may determine the grid charging charging unit based on grid charging when the supply source is the grid (power) and is expected to provide power sufficiently stably.

On the other hand, if the supply source is the grid (power), but it is not provided stably and power is expected to be provided from the ESS, the charger control unit 550 sets the grid charging billing unit for up to a certain time/charge amount, and charges the ESS for more time/charge amount. The unit can be determined.

Meanwhile, if the supply source is the ESS and it is expected to provide power sufficiently stably, the charger control unit 550 may determine the ESS charging billing unit based on the ESS charging.

Lastly, if the supply source is ESS and cannot stably provide power, the charger control unit 550 may determine an ESS charging unit that can charge only up to the ESS charging time/charge amount limit.

The charger control unit 550 can predict the amount of power to be used in the future based on electricity use status and past electricity use history.

Thereafter, the interface unit 510 outputs an interface for inputting charging time/charging cost according to the charging unit determined by the charger control unit 550 (S331). The interface unit 510 may display an interface through which a user can input a charging time or a charging cost. Of course, in addition to this, the interface unit 510 may provide an interface for inputting the charge amount or full charge.

Thereafter, power is supplied according to the charging time/charging cost information input from the interface output to the interface unit 510 (S332). This process takes place after the user enters the charging time or charging cost.

Meanwhile, the charger control unit 550 continuously monitors whether an abnormal condition occurs during the charging process (S334). Abnormal states include not only abnormal states that occur during the charging process, but also rapid changes in the amount of power provided by the grid or ESS.

If an abnormal condition occurs (S334), the charger control unit 550 sends an abnormal signal and stops power supply (S335). Abnormal signals may be transmitted to systems related to ESS or grid power.

And in case of interruption due to an abnormal condition, payment is made for the amount of power supplied so far (S337).

Meanwhile, if no abnormal condition occurs (S334), the charger control unit 550 continues charging and proceeds with payment when charging is completed (S336) (S337). If charging is not complete, proceed with the charging process.

Figure 14 is a diagram showing a process in which a charger displays an interface required for charging or charging according to another embodiment of the present invention. Figure 14 shows the process of making payment before starting charging. The user can select the charging unit price displayed by the interface unit 510 of the charger 50 according to the charging amount, charging time, etc. Among the charging methods, selectable options may vary depending on high-speed/low-speed charging, and the charging unit price may change depending on changes in these options.

S330 and S331 are the same as previously described in FIG. 13.

Thereafter, power is supplied after payment according to the charging time/charging cost information input from the interface output to the interface unit 510 (S333). Charging begins after the user enters the charging time or charging cost and pays the corresponding cost.

Meanwhile, the charger control unit 550 continuously monitors whether an abnormal condition occurs during the charging process (S334). Abnormal states include not only abnormal states that occur during the charging process, but also rapid changes in the amount of power provided by the grid or ESS.

If an abnormal condition occurs (S334), the charger control unit 550 sends an abnormal signal and stops power supply (S335). Abnormal signals may be transmitted to systems related to ESS or grid power.

And, if the service is stopped due to an abnormal condition, the amount of power supplied so far is less than the amount of power paid for in S333, so the charger control unit 550 proceeds with a process to return the difference (S339).

Meanwhile, if no abnormal condition occurs (S334), the charger control unit 550 continues charging and ends when charging is completed (S338). If charging is not complete, proceed with the charging process.

Figure 15 is a diagram showing the process of determining a charging unit according to an embodiment of the present invention. The charger control unit 550 may determine the charging unit differently depending on whether the supply source is the grid or ESS (S351). The charger control unit 550 determines whether the supply source is grid (power) and is provided stably as Max_GRID_EST_Time / Max_GRID_EST_Cost (S352).

Max_GRID_EST_Time means the time the grid can charge to its maximum. Max_GRID_EST_Cost refers to the maximum charging cost that the grid can charge.

As a result of the determination, if stable provision is possible, the charger control unit 550 determines the charging unit based on the grid supply source and displays the charging time or charging cost accordingly (S353).

Meanwhile, if the charger control unit 550 determines in S352 that the supply source is the grid (power) and is not stably provided within Max_GRID_EST_Time / Max_GRID_EST_Cost, and thus may be used through ESS, the charger control unit 550 performs S354.

That is, the charger control unit 550 determines the charging unit differently depending on the case of Before_ESS_Time / Before_ESS_Cost or less and the case of Before_ESS_Time / Before_ESS_Cost more and displays the charging time or charging cost accordingly.

Before_ESS_Time refers to the time the grid can charge to its maximum without power supply from the ESS. Before_ESS_Cost refers to the cost that the grid can charge to its maximum without power supply from the ESS.

That is, the charger control unit 550 determines the charging unit for time/cost below Before_ESS_Time / Before_ESS_Cost based on the grid supply source and displays the charging time or charging cost accordingly.

Meanwhile, the charger control unit 550 determines the charging unit based on the ESS supply source when Before_ESS_Time / Before_ESS_Cost is exceeded, and displays the charging time or charging cost accordingly.

Meanwhile, if the charger control unit 550 determines in S352 that the supply source is the ESS rather than the grid, the charger control unit 550 determines whether the supply source is the ESS and whether it is provided stably as Max_ESS_EST_Time / Max_ESS_EST_Cost (S355).

Max_ESS_EST_Time refers to the time that ESS can charge to its maximum. Max_ESS_EST_Cost refers to the maximum charging cost of ESS.

As a result of the determination, if stable provision is possible, the charger control unit 550 determines the charging unit based on the ESS supply source and displays the charging time or charging cost accordingly (S356).

Meanwhile, if the charger control unit 550 determines in S355 that the supply source is ESS and that there is a possibility that it may not provide power as stably as Max_ESS_EST_Time / Max_ESS_EST_Cost, the charger control unit 550 performs S357.

In this case, the charger control unit 550 displays available charging units, Available_CHG_Time and Available_CHG_Cost (S357).

Figure 15 can be summarized as follows.

If the supply source is the grid and the grid can supply power more than the maximum charging time (Max_GRID_EST_Time) or the maximum charging amount Max_GRID_EST_Cost, the charger control unit 550 determines the charging unit based on the grid supply source (S353).

Meanwhile, the charger control unit 550 uses the grid as the supply source, and if the grid cannot supply power more than the maximum charging time (Max_GRID_EST_Time) or the maximum charging amount (Max_GRID_EST_Cost), the charger control unit 550 uses the first reference time or the second reference time. For amounts less than 1 charge, the first charging unit is determined based on the grid supply source. Additionally, the charger control unit 550 determines a second charging unit based on the energy storage device supply source for exceeding the first reference time or the first charging amount (S354). In Figure 18, which will be described later, the first standard time is 15 minutes, and in Figure 22, which will be described later, the first standard amount is 20,000 won. 18 and 22, which will be described later, an example of the difference between the first charging unit and the second charging unit is provided.

If the supply source is an energy storage device and the energy storage device can supply power more than the maximum charging time (Max_ESS_EST_Time) or the maximum charging amount (Max_ESS_EST_Cost), the charger control unit 550 sets a charging unit based on the energy storage device supply source. Decide (S356).

The charger control unit 550 determines that the supply source is an energy storage device, and if the energy storage device cannot supply power more than the maximum charging time (Max_ESS_EST_Time) or the maximum charging amount (Max_ESS_EST_Cost), the charger control unit 550 sets the first reference time Alternatively, the charging unit is determined based on the energy storage device supply source only for the first charging amount or less. Additionally, the charger control unit 550 may control the interface unit 510 so that payment cannot be made for exceeding the first reference time or the first charging amount.

In Figure 20, which will be described later, the first standard time is 10 minutes, and in Figure 24, which will be described later, the first standard amount is 7,000 won. 20 and 24, which will be described later, an example of the difference between the first charging unit and the second charging unit is provided.

Figure 16 is an interface for selecting a charging method according to an embodiment of the present invention. 360 displays the interface where the user chooses to charge with time. 361 displays the interface where the user chooses to recharge with cost.

17 to 24 are diagrams showing a charging interface according to an embodiment of the present invention.

17 and 21 show the interface provided by the interface unit 510 in step S353 of FIG. 15.

18 and 22 are interfaces provided by the interface unit 510 in step S354 of FIG. 15.

Figures 19 and 23 show the interface provided by the interface unit 510 in step S356 of Figure 15.

Figures 20 and 24 show the interface provided by the interface unit 510 in step S357 of Figure 15.

In each interface, the triangle placed to the left or right of the text labeled Time Selection or Cost Selection is a button to indicate another interface.

Figures 17 to 20 are interfaces displayed when “Charge by time” is selected as shown at 360 in Figure 16. In this case, the interface unit 510 may select or input a charging time according to the charging time method and output an expected charging amount corresponding to the charging time.

In more detail, the charging time method is a method in which the interface unit 510 outputs an interface that can select the charging time (S353a, S354a, S356a, S357a), and a method in which the interface unit 510 outputs an interface that increases or decreases the charging time (S353b) , S354b, S356b, S357b), or a method in which the interface unit 510 outputs an interface that receives the charging time as a number (S353c, S354c, S356c, S357c).

Figures 21 to 24 are interfaces displayed when “Charge at cost” is selected as shown at 361 in Figure 16. In this case, the interface unit 510 may output an interface for selecting or inputting the amount to be charged according to the charging cost method, and an expected charging time corresponding to the amount to be charged.

More specifically, the charging cost method is a method in which the interface unit 510 outputs an interface that allows selection of the amount to be charged (S353e, S354e, S356e, S357e), and a method in which the interface unit outputs an interface that increases or decreases the amount to be charged (S353f , S354f, S356f, S357f), or a method in which the interface unit 510 outputs an interface that receives the amount to be charged as a number (S353g, S354g, S356g, S357g).

Look at Figure 17 in detail.

S353 is supplied with power from the grid and can be recharged by stably supplying power as much as Max_GRID_EST_Time / Max_GRID_EST_Cost. Accordingly, the interface unit 510 may output one of S353a, S353b, and S353c interfaces according to the grid charging charging unit. Grid charging charging unit is based on 10 minutes, 15,000 won, and increases by 5,000 won for every 5 minutes.

S353a is an interface that displays time in units (10 minutes, 15 minutes, 20 minutes). Additionally, the charging cost is displayed at the bottom of each unit time. For example, if you select 10 minutes, the charging cost is 15,000 won, if you select 15 minutes, the charging cost is 20,000 won, and if you select 20 minutes, the charging cost is 25,000 won. When you select the triangle placed to the right of “time selection” of S353a, the interface of S353b can be displayed.

S353b is an interface that can increase or decrease time in 1-minute increments. If you press the up/down triangle to the right of the area marked 16 minutes, the time increases or decreases. And the corresponding charging cost is calculated as 21,000 won. If the user presses the bottom triangle, the charging time is reduced to 15 minutes and the cost is displayed at 20,000 won. When you select the triangle placed to the right of “Time Selection” of S353b, the interface of S353c can be displayed. When you select the triangle placed to the left of “time selection” of S353b, the interface of S353a can be displayed.

The S353c displays a numeric input pad and allows you to enter the time. When you select a number and select the "Enter" button, the charging time and estimated cost will be displayed. When you select the triangle placed to the left of “Time Selection” of S353c, the interface of S353b can be displayed.

At the bottom of S353a, S353b, and S353c, the currently charged amount and the expected charged amount according to the time selected by the user are displayed. The range of expected charging may change as the user selects a specific time.

Look at Figure 18 in detail.

S354 is a case where the supply source is grid (power) and it is not provided stably within Max_GRID_EST_Time / Max_GRID_EST_Cost, so there is a possibility of using it through ESS. That is, the control unit 550 determines the charging unit differently depending on the case of Before_ESS_Time / Before_ESS_Cost or less and the case of Before_ESS_Time / Before_ESS_Cost exceeding and displays the charging time or charging cost accordingly.

In Figure 18, Before_ESS_Time is 15 minutes.

Accordingly, the interface unit 510 may output one of S354a, S354b, and S354c interfaces in grid charging charging units for 15 minutes or less and in ESS charging charging units for exceeding 15 minutes. Grid charging charging unit is based on 10 minutes, 15,000 won, and increases by 5,000 won for every 5 minutes. The ESS charging unit increases by 10,000 won for every 5 minutes exceeding 15 minutes.

S354a is an interface that displays time in units (10 minutes, 15 minutes, 20 minutes). Additionally, the charging cost is displayed at the bottom of each unit time. For example, if you select 10 minutes, the charging cost is 15,000 won, and if you select 15 minutes, the charging cost is 20,000 won. If you select 20 minutes, the ESS charging unit is applied for the excess time if it exceeds 15 minutes, so the charging cost is 30,000 won. When you select the triangle placed to the right of “time selection” of S354a, the interface of S354b can be displayed.

S354b is an interface that can increase or decrease time in 1-minute increments. If you press the up/down triangle to the right of the area marked 16 minutes, the time increases or decreases. And the corresponding charging cost is calculated as 22,000 won. If the user presses the bottom triangle, the charging time is reduced to 15 minutes and the cost is displayed at 20,000 won. If the charge exceeds 15 minutes, a message will be displayed indicating that ESS will be charged, and the amount per minute will increase by 10,000 won. When you select the triangle placed to the right of “Time Selection” of S354b, the interface of S354c can be displayed. When you select the triangle placed to the left of “Time Selection” of S354b, the interface of S354a can be displayed.

The S354c displays a numeric input pad and allows you to enter the time. When you select a number and select the "Enter" button, the charging time and estimated cost will be displayed. If the charge exceeds 15 minutes, a message will be displayed indicating that ESS will be charged, and the amount per minute will increase by 10,000 won. When you select the triangle placed to the left of “Time Selection” of S354c, the interface of S354b can be displayed.

At the bottom of S354a, S354b, and S354c, the currently charged amount and the expected charged amount according to the time selected by the user are displayed. The range of expected charging may change as the user selects a specific time.

Look at Figure 19 in detail.

S356 is supplied with power from ESS and can be recharged by stably supplying power as much as Max_ESS_EST_Time / Max_ESS_EST_Cost. Accordingly, the interface unit 510 may output one of S356a, S356b, and S356c interfaces according to the ESS charging unit. The ESS charging unit is based on 5 minutes, 15,000 won, and increases by 10,000 won for every 5 minutes.

S356a is an interface that displays time in units (5 minutes, 10 minutes, 15 minutes). Additionally, the charging cost is displayed at the bottom of each unit time. For example, if you select 5 minutes, the charging cost is 15,000 won, if you select 10 minutes, the charging cost is 25,000 won, and if you select 15 minutes, the charging cost is 35,000 won. When you select the triangle placed to the right of “Time Selection” of S356a, the interface of S356b can be displayed.

S356b is an interface that can increase or decrease time in 1-minute increments. If you press the up/down triangle to the right of the area marked 11 minutes, the time increases or decreases. And the corresponding charging cost is calculated as 27,000 won. If the user presses the bottom triangle, the charging time is reduced to 10 minutes and the cost is displayed at 25,000 won. When you select the triangle placed to the right of “Time Selection” of S356b, the interface of S356c can be displayed. When you select the triangle placed to the left of “Time Selection” of S356b, the interface of S356a can be displayed.

The S356c displays a numeric input pad and allows you to enter the time. When you select a number and select the "Enter" button, the charging time and estimated cost will be displayed. When you select the triangle placed to the left of “Time Selection” of S356c, the interface of S356b can be displayed.

At the bottom of S356a, S356b, and S356c, the currently charged amount and the expected charge amount according to the time selected by the user are displayed. The range of expected charging may change as the user selects a specific time.

Look at Figure 20 in detail.

S357 is a case where power is supplied from the ESS, but charging is possible by supplying power as much as the available charging units (Available_CHG_Time, Available_CHG_Cost). Available_CHG_Time is 10 minutes, so you can only select the charging time for times less than that.

Accordingly, the interface unit 510 may output one of S357a, S357b, and S357c interfaces depending on the ESS charging unit and available charging unit. The ESS charging unit is based on 5 minutes, 15,000 won, and increases by 10,000 won for every 5 minutes.

S357a is an interface that displays times under 10 minutes as 5 minutes and 10 minutes. Additionally, the charging cost is displayed at the bottom of each unit time. For example, if you select 5 minutes, the charging cost is 15,000 won, and if you select 10 minutes, the charging cost is 25,000 won. When you select the triangle placed to the right of “Time Selection” of S357a, the interface of S357b can be displayed.

S357b is an interface that can increase or decrease time in 1-minute increments. If you press the up/down triangle to the right of the area marked 9 minutes, the time increases or decreases. And the corresponding charging cost is calculated as 23,000 won. If the user presses the top triangle, the charging time increases to 10 minutes and the cost is displayed as 25,000 won. Additionally, a message appears indicating that charging is possible for up to 10 minutes.

When you select the triangle placed to the right of "Select Time" of S357b, the interface of S357c can be displayed. When you select the triangle placed to the left of “Time Selection” of S357b, the interface of S357a can be displayed.

The S357c displays a numeric input pad and allows you to enter the time. When you select a number and select the "Enter" button, the charging time and estimated cost will be displayed. If you enter 25 minutes, a message is displayed indicating that charging is only possible for up to 10 minutes. When you select the triangle placed to the left of “Time Selection” of S357c, the interface of S357b can be displayed.

At the bottom of S357a, S357b, and S357c, the currently charged amount and the expected charged amount according to the time selected by the user are displayed. The range of expected charging may change as the user selects a specific time.

Look at Figure 21 in detail.

S353 is supplied with power from the grid and can be recharged by stably supplying power as much as Max_GRID_EST_Time / Max_GRID_EST_Cost. Accordingly, the interface unit 510 may output one of S353e, S353f, and S353g interfaces according to the grid charging charging unit.

S353e is an interface that displays costs in units of 10,000 won, 20,000 won, and 30,000 won. Additionally, the estimated charging time is displayed at the bottom of each unit amount. For example, if you select 10,000 won, the charging time is 5 minutes, if you select 20,000 won, the charging time is 15 minutes, and if you select 30,000 won, the charging time is 25 minutes. When you select the triangle placed to the right of “Cost Selection” of S353e, the interface of S353f can be displayed.

S353f is an interface that allows you to increase or decrease the cost in units of 1,000 won. If you press the up/down triangle to the right of the area marked 22,000 won, the cost will increase or decrease. And the charging time is calculated accordingly at 17 minutes. If the user presses the bottom triangle, the charging cost decreases to 21,000 won and the time is displayed as 16 minutes. When you select the triangle placed to the right of “Cost Selection” of S353f, the interface of S353g can be displayed. When you select the triangle placed to the left of “Cost Selection” of S353f, the interface of S353e can be displayed.

The S353g displays a numeric input pad and allows you to enter costs. When you select a number and select the "Enter" button, the corresponding charging cost and estimated time will be displayed. When you select the triangle placed to the left of “Cost Selection” of S353g, the interface of S353f can be displayed.

The bottom of the S353e, S353f, and S353g displays the currently charged amount and the expected charged amount based on the cost selected by the user. The range of expected charges may change as the user selects a specific cost.

Look at Figure 22 in detail.

S354 is a case where the supply source is grid (power) and it is not provided stably within Max_GRID_EST_Time / Max_GRID_EST_Cost, so there is a possibility of using it through ESS. That is, the control unit 550 determines the charging unit differently depending on the case of Before_ESS_Time / Before_ESS_Cost or less and the case of Before_ESS_Time / Before_ESS_Cost exceeding and displays the charging time or charging cost accordingly.

In Figure 22, Before_ESS_Cost is 20,000 won.

Accordingly, the interface unit 510 may output any one of S354e, S354f, and S354g interfaces in grid charging charging units for amounts under 20,000 won, and in ESS charging charging units for amounts exceeding 20,000 won. The grid charging charging unit is 10,000 won, based on 5 minutes, and the estimated time increases by 10 minutes for every 10,000 won increase. The ESS charging unit increases by 10,000 won for each minute above 20,000 won.

S354e is an interface that displays costs in units of 10,000 won, 20,000 won, and 30,000 won. Additionally, the charging cost is displayed at the bottom of each unit time. For example, if you select 10,000 won, the expected charging time is 5 minutes, and if you select 20,000 won, the charging time is 15 minutes. If you select 30,000 won, the ESS charging unit is applied for costs exceeding 20,000 won, and the charging time can be 20 minutes. When charging ESS, the charging time may be reduced in fast charging mode. When charging ESS in slow charging mode, the charging time can be predicted to be similar to the grid charging time.

When you select the triangle placed to the right of “Cost Selection” of S354e, the interface of S354f can be displayed.

S354f is an interface that allows you to increase or decrease the cost in units of 1,000 won. If you press the up/down triangle to the right of the area marked 22,000 won, the cost will increase or decrease. And the expected charging time is calculated as 17 minutes. If the user presses the bottom triangle and the charging cost decreases to 21,000 won, the estimated time may be displayed as 16 minutes. A message may be displayed indicating that ESS charging is required for amounts exceeding 20,000 won. When you select the triangle placed to the right of “Cost Selection” of S354f, the interface of S354g can be displayed. When you select the triangle placed to the left of “Cost Selection” of S354f, the interface of S354e can be displayed.

The S354g displays a numeric input pad and allows you to enter costs. When you select a number and select the "Enter" button, the corresponding charging cost and estimated time will be displayed. For amounts exceeding 20,000 won, a message will be displayed indicating that ESS charging is required, and the expected charging time may change accordingly. When you select the triangle placed to the left of “Cost Selection” of S354g, the interface of S354f can be displayed.

The bottom of the S354e, S354f, and S354g displays the currently charged amount and the estimated charged amount based on the cost selected by the user. The range of expected charges may change as the user selects a specific cost.

Look at Figure 23 in detail.

S356 is supplied with power from ESS and can be recharged by stably supplying power as much as Max_ESS_EST_Time / Max_ESS_EST_Cost. Accordingly, the interface unit 510 may output one of S356e, S356f, and S356g interfaces according to the ESS charging unit. The ESS charging unit is 5,000 won and is calculated based on an estimate of 1 minute of charging.

S356e is an interface that displays charging costs in units of 5,000 won, 7,000 won, and 10,000 won. Additionally, the estimated charging time is displayed at the bottom of each unit cost. For example, if you select 5,000 won, the charging time is 1 minute, if you select 7,000 won, the charging time is 2 minutes, and if you select 10,000 won, the charging time is 3 minutes. When you select the triangle placed to the right of “Cost Selection” of S356e, the interface of S356f can be displayed.

S356f is an interface that allows you to increase or decrease the cost in units of 1,000 won. If you press the up/down triangle to the right of the area marked 7,000 won, the cost will increase or decrease. And the charging time of 2 minutes is calculated accordingly. If the user presses the bottom triangle, the charging cost is reduced to 6,000 won and the time is displayed as 1 minute and 50 seconds. When you select the triangle placed to the right of "Select Cost" of S356f, the interface of S356g can be displayed. When you select the triangle placed to the left of “Cost Selection” of S356f, the interface of S356e can be displayed.

The S356g displays a numeric input pad and allows you to enter costs. When you select a number and select the "Enter" button, the corresponding charging cost and estimated time will be displayed. When you select the triangle placed to the left of "Select Cost" of S356g, the interface of S356f can be displayed.

The bottom of the S356e, S356f, and S356g displays the currently charged amount and the expected charged amount based on the cost selected by the user. The range of expected charges may change as the user selects a specific cost.

Look at Figure 24 in detail.

S357 is a case where power is supplied from the ESS, but charging is possible by supplying power as much as the available charging units (Available_CHG_Time, Available_CHG_Cost). Available_CHG_Cost is 7,000 won, so you can only select the charging time for times less than that.

Accordingly, the interface unit 510 may output one of S357e, S357f, and S357g interfaces depending on the ESS charging unit and available charging unit.

S357e is an interface that displays charging costs of 5,000 won and 7,000 won. Additionally, the estimated charging time is displayed at the bottom of each unit cost. For example, if you select 5,000 won, the charging time is 1 minute, and if you select 7,000 won, the charging time is 2 minutes. When you select the triangle placed to the right of “Cost Selection” of S357e, the interface of S357f can be displayed.

S357f is an interface that allows you to increase or decrease the cost in units of 1,000 won. If you press the up/down triangle to the right of the area marked 7,000 won, the cost will increase or decrease. And the charging time is calculated as 2 minutes. If the user presses the triangle at the top, the charge can be charged up to 7,000 won, so the cost does not increase any further.

When you select the triangle placed to the right of "Select Cost" of S357f, the interface of S357g can be displayed. When you select the triangle placed to the left of “Cost Selection” of S357f, the interface of S357e can be displayed.

The S357g displays a numeric input pad and allows you to enter costs. When you select a number and select the "Enter" button, the charging time and estimated cost will be displayed. If you enter 8,000 won, a message is displayed stating that only up to 7,000 won can be charged. When you select the triangle placed to the left of “Cost Selection” of S357g, the interface of S357f can be displayed.

The bottom of the S357e, S357f, and S357g displays the currently charged amount and the expected charge amount based on the cost selected by the user. The range of expected charges may change as the user selects a specific cost.

Figure 25 is a diagram showing the charging process after starting charging according to an embodiment of the present invention. S35a starts charging after setting the charging time and then shows the charging status. The interface unit 510 displays the initial state of the vehicle and displays the amount of power supplied. The arrow indicating the current charging state increases to the right during the charging process and can reach the expected charging amount.

S35b starts charging after setting the charging time and then shows the charging status. The interface unit 510 does not display the initial state of the vehicle, but displays the total expected charge amount and indicates the current state of charge with an arrow.

S35c can be displayed in a way that the area of the pie chart increases or decreases depending on the amount of power supplied.

Even if the charging cost is set, it can be displayed as S35a~S35c, but information about the cost is displayed first.

S35b and S35c in Figure 25 display an interface called "fast charging button". If the user confirms that the charging speed is slow during the charging process, he or she can touch the "fast charging button" to instruct fast charging and pay the corresponding cost.

That is, when the charger control unit confirms that fast charging is possible from the energy storage device during the charging process of the charging unit 530, the interface unit 510 may output an interface for selecting fast charging.

Figure 26 is a diagram showing an interface for setting the charging amount according to another embodiment of the present invention. S35e is a jog shuttle method in which the user touches the area displayed on the interface unit 510 using his hand (indicated by HAND) and adjusts the size of the pie chart left and right to control the charging time. S35f is a method in which the user sets the charging cost by adjusting the area displayed on the interface unit 510 using the finger (indicated by FINGER).

When applying the embodiment of the present invention, before the user inputs the charging cost/charging time/charge amount, the charger 50 sets the maximum possible charging time/cost/quantity according to the current grid load and other charger/ESS load conditions. can be displayed. Additionally, during this process, information about the vehicle's current charging state can be displayed.

During the charging process, the changed charging time/charge cost/charge amount can be displayed depending on the current grid load and other charger/ESS load status.

Meanwhile, it is also possible to change the charging. For example, at the beginning of charging, a large number of loads were generated and low-speed charging was performed, but as other loads disappeared during the charging process, the charger 50 automatically performed high-speed charging, or, as shown in FIG. 25, the user performed high-speed charging. Select the button to enable fast charging.

When applying embodiments of the present invention, the charger 50 can provide stable charging in response to changes in power supply conditions. The charger 50 can receive power supplied from the power grid and the energy storage device through power supply switching or power supply merging under the control of the energy storage device 100.

Additionally, the charger 50 can charge an object that needs to be charged using the supplied power.

Looking at the charging process in detail, the charger 50 displays a first screen interface (FIG. 16) on the screen where one of the charging amount method and the charging time method can be selected to receive the user's input selection. Then, the charger 50 receives the user's selection input by displaying detailed information about the charging time method or charging cost method selected through the first screen interface on the second screen interface.

Examples of the second screen interface in the case of the charging time method are shown in FIGS. 17 to 20.

Examples of the second screen interface in the case of the charging cost method are shown in Figures 21 to 24.

And, as charging progresses based on detailed information related to the charging time method or charging cost method selected through the second screen interface, information related to the charging status can be displayed on the screen through the third screen interface (FIG. 25).

Relevant details about the charging time method may include a plurality of charging time selection icons or time number input icons. This is shown in detail in Figures 17 to 20.

Additionally, detailed information about the charging cost method may include a plurality of charging cost selection icons or a cost number input icon. This is shown in detail in Figures 21 to 24.

Additionally, the charger 50 may display charging state-related information such that the current charging amount and expected charging amount change in real time. This takes Figure 25 as an example.

The interface of the charger 50 according to an embodiment of the present invention includes an interface for charging an electric vehicle (EV), which is an object that requires charging.

Even though all the components constituting the embodiment of the invention are described as being combined or operated in combination, the present invention is not necessarily limited to this embodiment, and within the scope of the purpose of the present invention, all the components are combined into one or more. It can also operate by selectively combining. In addition, although all of the components may be implemented as a single independent hardware, a program module in which some or all of the components are selectively combined to perform some or all of the functions of one or more pieces of hardware. It may also be implemented as a computer program having. The codes and code segments that make up the computer program can be easily deduced by a person skilled in the art of the present invention. Such a computer program can be stored in a computer-readable storage medium and read and executed by a computer, thereby implementing embodiments of the present invention. Storage media for computer programs include magnetic recording media, optical recording media, and storage media including semiconductor recording elements. Additionally, the computer program implementing the embodiment of the present invention includes a program module that is transmitted in real time through an external device.

The above-described embodiments should be understood in all respects as illustrative and not restrictive, and the scope of the present invention will be indicated by the claims to be described later rather than the detailed description given above. In addition, the meaning and scope of this patent claim, as well as all possible transformations and modifications derived from the equivalent concept, should be construed as being included in the scope of the present invention.

30: Supportive power area 40: Primary power area
50: Charger 100: ESS
150: controller

Claims (19)

A power supply unit that receives power from at least one supply source: a grid or an energy storage device;
An interface unit providing an interface for selecting either the charging amount method or the charging time method and an interface for setting the charging amount or charging time according to the selected method;
a charger control unit that determines a charging unit of the charging amount or the charging time according to the type of the supply source; and
A charger including a charging unit that performs charging according to the time or amount selected in the interface unit.
According to paragraph 1,
The charger control unit determines a charging unit according to the supply source. A charger that determines the maximum charging time or maximum charging amount according to the expected supply amount information from the supply source.
According to paragraph 1,
The charger control unit determines a charging unit based on the grid supply source when the supply source is a grid and the grid can supply power beyond the maximum charging time or maximum charging amount.
According to paragraph 1,
If the supply source is a grid and the grid cannot supply power for more than the maximum charging time or maximum charging amount, the charger control unit,
The charger control unit determines the first charging unit based on the grid supply source for less than or equal to the first reference time or the first charging amount, and based on the energy storage device supply source for exceeding the first reference time or the first charging amount. The charger determines the second charging unit.
According to paragraph 1,
The charger control unit determines a charging unit based on the energy storage device supply source when the supply source is an energy storage device and the energy storage device can supply power more than the maximum charging time or maximum charging amount.
According to paragraph 1,
If the supply source is an energy storage device and the energy storage device cannot supply power for more than the maximum charging time or maximum charging amount, the charger control unit,
The charger control unit determines the charging unit based on the energy storage device supply source only for less than or equal to the first reference time or the first charging amount,
A charger that controls the interface unit so that payment cannot be made for exceeding the first reference time or the first charging amount.
According to paragraph 1,
The interface unit outputs an interface for selecting or inputting a charging time according to the charging time method and an estimated charging amount corresponding to the charging time.
In clause 7,
The charging time method is a method in which the interface unit outputs an interface that can select the charging time, a method in which the interface unit outputs an interface that increases or decreases the charging time, or the interface unit inputs the charging time as a number. A charger, including one or more ways to output a receiving interface.
According to paragraph 1,
The interface unit outputs an interface for selecting or inputting an amount to be charged according to the charging cost method and an expected charging time corresponding to the amount to be charged.
According to clause 9,
The charging cost method is a method in which the interface unit outputs an interface for selecting the amount to be charged, a method in which the interface unit outputs an interface that increases or decreases the amount to be charged, or the interface unit inputs the amount to be charged as a number. A charger, including one or more ways to output a receiving interface.
According to paragraph 1,
When the charger control unit confirms that fast charging is possible from the energy storage device during the charging process, the interface unit outputs an interface for selecting fast charging.
In order to provide stable charging in response to changes in power supply conditions, power supplied from the power grid and energy storage devices is supplied through power supply switching or power supply merging under the control of the energy storage device. In the method of charging an object that requires charging by a charger using the power supplied after
The charger receiving a user's input selection by displaying a first screen interface on the screen that allows the charger to select one of a charging amount method and a charging time method;
The charger receiving a user's selection input by displaying detailed information about the charging time method or charging cost method selected through the first screen interface on a second screen interface; and
Characterized in that it includes the step of displaying charging status-related information on the screen through a third screen interface as charging progresses based on detailed information related to the charging time method or charging cost method selected through the second screen interface. How to provide a user interface.
In paragraph 12
Detailed information about the charging time method includes a plurality of charging time selection icons or time number input icons, and detailed information about the charging cost method includes a plurality of charging cost selection icons or cost number input icons. A method of providing a user interface.
In paragraph 13
A method of providing a user interface, characterized in that the charging state-related information displays the current charging amount and the expected charging amount to change in real time.
In paragraph 14
A method of providing a user interface, wherein the object requiring charging is an electric vehicle (EV).
According to clause 12,
The power grid to which the charger is connected is a power grid with two or more power sources including the grid and at least one energy storage device,
the energy storage device receiving a power charging request from the charger used to charge an object containing a rechargeable battery;
Comparing, by the energy storage device, a sum of the charger power demand (Charging_Request) and the power amount defined for primary use (Primary_Usage) with the maximum amount of power available from the grid (Grid_Max);
If the maximum amount of power available from the grid (Grid_Max) is less than or equal to the sum value, the energy storage device performs a first procedure, and if not, the energy storage device performs a second procedure;
The energy storage device selectively performing the first procedure or the second procedure to provide power to the charger by the grid alone, the energy storage device alone, or the grid and the energy storage device together. Including, a method of providing an interface.
In paragraph 16
A method of providing an interface, wherein the amount of power (Primary_Usage) defined for the primary use is related to the power used in the primary power area of the power grid.
In paragraph 16
The first procedure is a method of providing an interface, characterized in that it determines and discharges the amount of power discharged from the energy storage device to assist with power exceeding the maximum amount of power available from the grid (Grid_Max).
In paragraph 16
The second procedure determines the amount of charging power of the energy storage device and performs charging when the amount of spare power in the grid is greater than the standard value, so that the spare power in the grid is used for charging, and if the amount of spare power in the grid is less than the standard value, the energy storage device is used for charging. A method of providing an interface characterized by entering a discharge standby mode.