Power management device and method for power trading

Abstract

A power management device according to an embodiment of the present invention is a power management device for managing the power of a battery included in a transportation means, and may comprise: at least one processor; and a memory for storing at least one instruction executed through the at least one processor. The at least one instruction may include: an instruction for classifying and storing information on the charging power of the battery according to energy type; an instruction for, when a power transaction request for charging power of a specific energy type is received, determining whether to agree to the power transaction on the basis of the amount of the charging power of the specific energy type; and an instruction for checking the amount of power discharged by the battery in response to the power transaction when the power transaction is agreed to.

Description

Power management device and method for power trading

[0001] This application claims the benefit of Korean Patent Application No. 10-2024-0046622 filed with the Korean Intellectual Property Office on April 5, 2024, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a power management device and method, and more particularly, to a power management device and method for trading power of a battery included in a means of transportation.

[0003] RE100 stands for "Renewable Electricity 100%," and is an international campaign aimed at ensuring that 100% of the electricity consumed by companies comes from renewable energy sources. Renewable energy, here, refers to energy sources that replace fossil fuels and can include solar thermal, photovoltaic, biomass, wind, hydroelectric, and geothermal energy.

[0004] To achieve RE100, companies are either installing power generation facilities powered by renewable energy or purchasing electricity generated from renewable energy power plants. However, installing power generation facilities and purchasing electricity can be costly, and the secured power alone is limited in meeting the company's electricity needs.

[0005] Meanwhile, a plan to supply power from an energy storage system (ESS) linked to a PV (Photovoltaic; solar power generation) system can be considered, but for this plan to be realized, additional transmission and distribution lines must be installed to supply power from the ESS, and separate facilities are needed to stabilize voltage and frequency.

[0006] As a related prior art document, there is Korean Patent Publication No. 10-2011-0072531.

[0007] The purpose of the present invention to solve the above problems is to provide a power management device for trading power of a battery included in a means of transportation.

[0008] Another object of the present invention to solve the above problems is to provide a power management method using such a power management device.

[0009] According to one embodiment of the present invention to achieve the above object, a power management device is a power management device that manages the power of a battery included in a means of transportation, and may include at least one processor; and a memory that stores at least one command executed through the at least one processor.

[0010] Here, the at least one command may include: a command for storing information about the charging power of the battery by classifying it by energy type; a command for determining whether to conclude a power transaction based on the amount of charging power of the specific energy type when a power transaction request for charging power of a specific energy type is received; and a command for checking the amount of power discharged by the battery in response to the power transaction when the power transaction is concluded.

[0011] The command for classifying and storing information about the charging power of the battery by energy type may include a command for classifying and recording the charging power of the battery by type 1, which is charged using a renewable energy source, and type 2, which is charged using grid power.

[0012] The command to classify and store information on the charging power of the above battery by energy type may include a command to receive and record the charging power amount by energy type at a predetermined time from an energy management device of an energy storage system linked to the above means of transportation.

[0013] The command for determining whether to conclude the above power transaction may include a command for receiving power transaction request information including a requested energy type and a requested charging power amount from a charging request device or a power transaction device; and a command for determining whether the battery can provide power based on the requested energy type and the requested charging power amount and the charging power amount for each energy type of the battery.

[0014] The command for determining whether to conclude the above power transaction may include a command for determining that the power transaction is concluded when it is determined that power provision is possible and a transaction acceptance signal is input from the user.

[0015] The command to check the amount of power discharged by the battery may include a command to update the amount of power charged by each stored energy type based on the amount of power discharged by the battery in response to the power transaction.

[0016] The at least one command may further include a command to provide the amount of power discharged by the battery to the power trading device for calculating power transaction costs.

[0017]

[0018] According to an embodiment of the present invention for achieving the above another object, a power management method is provided, by a power management device for managing power of a battery included in a means of transportation, the power management method including: a step of classifying and storing information on charging power of the battery by energy type; a step of determining whether to conclude a power transaction based on the amount of charging power of the specific energy type when a power transaction request for charging power of a specific energy type is received; and a step of confirming the amount of power discharged by the battery in response to the power transaction when the power transaction is concluded.

[0019] The step of classifying and storing information about the charging power of the battery by energy type may include a step of classifying and recording the charging power of the battery into a first type charged using a renewable energy source and a second type charged using grid power.

[0020] The step of classifying and storing information on the charging power of the battery by energy type may include a step of receiving and recording the charging power amount by energy type at a predetermined time interval from an energy management device of an energy storage system linked to the means of transportation.

[0021] The step of determining whether to conclude the above power transaction may include the step of receiving power transaction request information including a requested energy type and a requested charging power amount from a charging request device or a power transaction device; and the step of determining whether the battery can provide power based on the requested energy type and the requested charging power amount and the charging power amount for each energy type of the battery.

[0022] The step of determining whether or not to conclude the above power transaction may include a step of determining that the power transaction has been concluded when it is determined that power provision is possible and a transaction acceptance signal is input from the user.

[0023] The step of checking the amount of power discharged by the battery may include a step of updating the amount of power charged by each stored energy type based on the amount of power discharged by the battery in response to the power transaction.

[0024] The above power management method may further include a step of providing the amount of power discharged by the battery to a power trading device for calculating power transaction costs.

[0025] According to the above-described embodiment of the present invention, power transactions between a purchaser who wishes to receive power of a specific energy type and an owner of a means of transportation can be supported, and the traded power can be supplied without installing a separate power supply network.

[0026] Figure 1 is a block diagram of an energy storage system that can be linked with the present invention.

[0027] Figure 2 shows an implementation example of an energy storage system that can be linked with the present invention.

[0028] Figure 3 is a flowchart of a power management method according to an embodiment of the present invention.

[0029] FIG. 4 is a reference diagram for explaining a method for storing charging power information according to an embodiment of the present invention.

[0030] FIG. 5 is a reference diagram for explaining a method for updating charging power information according to an embodiment of the present invention.

[0031] Figure 6 is a flowchart of a power management method according to another embodiment of the present invention.

[0032] Figure 7 is a block diagram of a power management device according to an embodiment of the present invention.

[0033] 100: Grid

[0034] 200: Subordinate

[0035] 300: Power generation device

[0036] 400: Vehicle Charger

[0037] 500: Battery System

[0038] 600: Energy management device

[0039] 700: Power Management Unit

[0040] The present invention is susceptible to various modifications and embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, but rather to encompass all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention. Throughout the description of each drawing, similar reference numerals have been used to designate similar components.

[0041] Terms such as "first," "second," "A," and "B" may be used to describe various components, but these components should not be limited by these terms. These terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, the first component could be referred to as the "second component," and similarly, the second component could also be referred to as the "first component." The term "and / or" includes any combination of multiple related items listed or any one of multiple related items listed.

[0042] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0043] The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprise" or "have" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0044] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0045]

[0046] Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the attached drawings.

[0047]

[0048] Figure 1 is a block diagram of an energy storage system that can be linked with the present invention.

[0049] The energy management device (600) can be connected to a grid (100), a load (200), a power generation device (300), a mobile charger (400), and a battery system (500).

[0050] The battery system (500) is electrically connected to the grid (100) and the power generation device (300), and can receive power from the grid (100) and the power generation device (300) and store it internally.

[0051] The battery system (500) is electrically connected to a load (200) and a mobile charger (400), and can supply power stored in a battery (hereinafter, ESS battery) included in an energy storage system to the load (200) and the mobile charger (400). Meanwhile, the load (200) is electrically connected to a grid (100) and a power generation device (300), and can receive power from the grid (100) and the power generation device (300).

[0052] The power generation device (300) is a device that generates power using a renewable energy source, and may be a power generation device that uses one or more of the following energy sources: solar energy, solar heat, bio energy, wind energy, hydroelectric energy, and geothermal energy. Meanwhile, the type of the power generation device (300) is not an essential component of the present invention, and therefore the scope of the present invention is not limited to these entities.

[0053] The mobility charger (400) is electrically connected to the grid (100), the power generation device (300), and the battery system (500), and can receive power from the grid (100), the power generation device (300), and the battery system (500). Here, the mobility charger may correspond to any one of an electric vehicle (EV), an electric bicycle, and an electric scooter, and may include a battery therein.

[0054] In an embodiment, the vehicle charger (400) may be a bidirectional charger. In this case, the vehicle charger (400) may charge the battery included in the vehicle using externally supplied power and discharge the power stored in the battery to the outside. For example, when the EV is connected to the EV charger (400), the bidirectional EV charger and EV battery may function in the same manner as the battery system (500) according to the present invention.

[0055] When the mobile charger (400) is configured as a bidirectional charger, the mobile charger (400) can supply power stored therein to the load (200) and the battery system (500).

[0056] The energy management device (600) may be configured to be connected to one or more of a load (200), a power generation device (300), a mobile charger (400), and a battery system (500) through a network to transmit and receive data with each other.

[0057] The energy management device (600) may be configured to be included within the battery system (500), or may be separately provided outside the battery system (500). For example, the energy management device (600) may be implemented to be included within a HEMS (Home Energy Management System), which is the top-level control system of a residential ESS, or may be implemented to be included within a server of an ESS management company and connected to the HEMS via a network.

[0058] The energy management device (600) collects one or more of the amount of power supplied from the grid (100), the amount of power output toward the grid (100), the amount of charge and discharge of the battery system (500), the amount of power generated by the power generation device (300), the amount of power consumed by the load (200), and the amount of charge and discharge of the mobile vehicle charger (200), and can calculate the amount of power stored in the battery of the mobile vehicle or the state of charge (SOC) using the collected information.

[0059] The power management device (700) of a vehicle is a device that manages the power of the vehicle's battery and can collect and manage status information regarding the power of the vehicle's battery. Here, the power management device (700) can be implemented and included in a computing device used or managed by the owner of the vehicle. For example, the power management device (700) can be implemented and included in a personal computer (PC), mobile phone, or tablet PC of the vehicle owner.

[0060] The power management device (700) is connected to one or more of the BMS of the mobile means, the mobile means charger (400), and the energy management device (600) through a network, and can collect status information on the battery of the mobile means.

[0061] The power management device (700) can receive a power transaction request from an external charging request device or power transaction device, and perform a power transaction process in response to the received power transaction request.

[0062]

[0063] Figure 2 shows an implementation example of an energy storage system that can be linked with the present invention.

[0064] Referring to FIG. 2, the battery system (500) may include an ESS battery (510) and an inverter (520) that controls the charging and discharging operation of the ESS battery (510).

[0065] The ESS battery (510) can be typically implemented in a form where multiple battery packs form a battery rack, and multiple battery racks form a battery bank. Here, depending on the device or system in which the battery is used, the battery pack may also be referred to as a battery module.

[0066] Each battery can be equipped with a Battery Management System (BMS). The BMS monitors the current, voltage, and temperature of each battery rack (or pack) it manages, calculates the State of Charge (SOC) based on the monitoring results, and controls charging and discharging.

[0067] The inverter (520), also referred to as a power conditioning system (PCS) or a power conversion system (PCS), can control power supplied from the outside to the ESS battery (510) and power supplied from the ESS battery (510) to the outside. Here, the energy management device (600) can be configured to be linked with the inverter (520) to mutually transmit and receive data.

[0068] The load (200) may include a plurality of loads (200-1 to 200-N). Here, the load (200) may receive power from one or more of the grid (100), the PV inverter (320), the inverter (520) of the battery system, and the bidirectional EV charger (420).

[0069] The PV system may include a PV module (310) (e.g., a solar panel) and a PV inverter (320) which is an AC / DC inverter, and an AC terminal of the PV inverter (320) and an AC terminal of an inverter (520) of a battery system may be connected to an AC link.

[0070] The bidirectional EV charger (420) includes an AC / DC inverter, and an AC terminal can be connected to an AC link.

[0071] A two-way EV charger (420) can control the charging and discharging operation of an EV battery (411) included in an EV (410).

[0072] The energy management device (600) is an upper control device of a grid, multiple loads, a PV system, a bidirectional EV charger, and a battery system, and can collect status information of each component and, based on the collected status information, control operations for one or more of the loads, the PV system, the bidirectional EV charger, and the battery system.

[0073] The energy management device (600) collects one or more of the amount of power supplied from the grid (100), the amount of power output toward the grid (100), the amount of charge and discharge of the ESS battery (510), the amount of power generated by the PV module (310), the amount of power consumed by the load (200), and the amount of charge and discharge of the two-way EV charger (420), and can calculate the amount of power stored in the EV battery (411) or the state of charge (SOC) using the collected information.

[0074] The power management device (700) of the EV is a device that manages the power of the EV battery (411) and can collect and manage status information on the power of the EV battery (411). Here, the power management device (700) can be implemented by being included in a computing device used or managed by the EV owner. For example, the power management device (700) can be implemented by being included in a personal computer (PC), mobile phone, or tablet PC of the EV owner, or can be implemented by being included in an AVN (Audio, Video, Navigation) system of the EV.

[0075] The power management device (700) may be connected to one or more of the battery management system (BMS) of the EV (410), the EV charger (420), and the energy management device (600) via a network to collect status information on the EV battery (411). Here, the status information may include the charging power amount of the EV battery (411), and the charging power amount may be classified and managed by energy type.

[0076] The power management device (700) can receive a power transaction request from an external charging request device or power transaction device, and perform a power transaction process in response to the received power transaction request.

[0077] The energy storage system illustrated in Fig. 2 is an AC coupled ESS in which a PV system, a bidirectional EV charger, a load, and an energy storage system are connected over an AC link. Meanwhile, the present invention can also be applied to a DC coupled ESS in which the output terminal of the PV system, the input terminal of the EV charger, and the output terminal of the energy storage system are connected over a DC link, and the DC link is connected to one terminal of an AC / DC inverter.

[0078]

[0079] Figure 3 is a flowchart of a power management method according to an embodiment of the present invention.

[0080] A power management method according to an embodiment of the present invention may be performed by a power management device that manages the power of a battery included in a means of transportation. Here, the means of transportation refers to a means of transportation including a driving device that operates using electric energy, and in an embodiment, may include one or more of an electric vehicle, an electric bicycle, and an electric scooter.

[0081] The power management device can store information about the charging power of the battery by classifying it by energy type (S310).

[0082] The power management device can record the battery's charge power by classifying it into a first type, which is charged using a renewable energy source, and a second type, which is charged using grid power. Here, the first type of power may refer to power generated by a power generation device using one or more renewable energy sources, including solar energy, solar thermal energy, bio energy, wind energy, hydroelectric energy, and geothermal energy.

[0083] FIG. 4 is a reference diagram for explaining a method for storing charging power information according to an embodiment of the present invention. Here, FIG. 4 shows a screen of a power management device that displays charging power information.

[0084] For example, the power management device can store the 3 kWh of charging power of the EV battery by dividing it into a first type of power (1 kWh) charged with power produced by the PV power generation device and a second type of power (2 kWh) charged with grid power, as shown in FIG. 4(A).

[0085] In an embodiment, the power management device may receive and record the amount of charging power for each energy type of the battery from the energy management device of the energy storage system at a predetermined time interval.

[0086] Specifically, the energy management device can collect one or more of the amount of power P_grid(t) supplied from the grid or output to the grid side, the charge / discharge amount of the ESS battery P_bat_ESS(t), the amount of power generated by the renewable energy-based power generation device P_PV(t), the amount of power consumed by the load P_load(t), and the charge / discharge amount of the battery of the vehicle P_bat_MV(t). Here, the energy management device can classify the charge power amount or SOC of the battery of the vehicle into the first type and the second type using the collected information. That is, the energy management device can monitor the flow of power by energy type (the first type and the second type) within the energy storage system to calculate the charge power amount of the battery of the vehicle by energy type, respectively. The energy management device can calculate the charge power amount of the battery by energy type at predetermined intervals and transmit the calculation result to the power management device.

[0087] For example, as illustrated in FIG. 4(B), when charging of an EV battery is completed, the power management device can receive and store the amount of charging power by energy type at the time of charging completion from the energy management device of the energy storage system.

[0088] In another embodiment, the power management device may receive and record the amount of charging power for each energy type of the battery from a BMS located within the vehicle or a vehicle charger at a predetermined time interval.

[0089] Specifically, the energy management device can monitor the flow of power by energy type (type 1 and type 2) within the energy storage system to calculate the amount of charging power for each energy type for the battery of the vehicle. The energy management device can calculate the amount of charging power for each energy type of the battery at predetermined intervals and transmit the calculation result to the BMS located within the vehicle or the vehicle charger. Thereafter, the power management device can receive and record the amount of charging power for each energy type of the battery from the BMS located within the vehicle or the vehicle charger.

[0090] In another embodiment, the power management device can directly calculate the amount of charging power for each energy type of the battery.

[0091] Specifically, the power management device can receive one or more of the amount of power P_grid(t) supplied from the grid or output to the grid side from the energy management device, the charge / discharge amount of the ESS battery P_bat_ESS(t), the amount of power generated by the renewable energy-based power generation device P_PV(t), the amount of power consumed by the load P_load(t), and the charge / discharge amount of the battery of the vehicle P_bat_MV(t). Thereafter, the power management device can classify the charge power amount or SOC of the battery of the vehicle into the first type and the second type using the collected information.

[0092] Referring again to FIG. 3, the power management device may receive a power transaction request from an external device (S320). Here, the power management device may receive a power transaction request from a charging request device or a power transaction device.

[0093] A charging request device may refer to a device managed by a power consumer who wishes to receive electricity from renewable energy sources. For example, a charging request device may be a computing device managed by a company participating in the RE100 campaign.

[0094] A power trading device may refer to a power trading system or power trading platform that supports power trading between multiple power suppliers and power buyers.

[0095] Power transaction request information received from an external device may include one or more of the following: required energy type, required charging power amount, purchase price, charging location, and power supply time. For example, a power management device may receive power transaction request information including [PV power], [3 kWh], [1,000 won / kWh], and [14:00 ~ 15:00].

[0096] The power management device can determine whether to conclude a power transaction based on the battery's charged power amount (S330). Here, the power management device can determine whether to conclude a power transaction based on the battery's charged power amount corresponding to the requested energy type included in the power transaction request information.

[0097] Specifically, the power management device can determine whether the battery can provide power based on the requested energy type and requested charging power amount included in the power transaction request information, and the charging power amount for each energy type of the battery. If it is determined that power can be provided, the power management device can determine that a power transaction has been concluded. For example, if a power transaction request for 3 kWh of PV power is received, the power management device can check the PV power amount of the vehicle battery, and if the confirmed PV power amount is 4 kWh, determine that a power transaction has been concluded.

[0098] In an embodiment, the power management device may determine whether to conclude a power transaction based on the availability of power and the user's acceptance of the transaction. For example, if power is available for the required energy type and required charging power amount, and a transaction acceptance signal is input from the user, the power management device may determine that the power transaction has been concluded. According to this embodiment, the user may ultimately approve the power transaction based on factors such as the purchase price or power supply time.

[0099] If a power transaction is determined to have been concluded, the power management device may transmit power transaction result information, including data indicating that the power transaction has been concluded, to the charging request device or power transaction device. If the power transaction is determined to have not been concluded, the power management device may transmit power transaction result information, including the reason for the power transaction failure, to the charging request device or power transaction device.

[0100] After a power transaction is concluded, the power management device can check the amount of power discharged by the battery of the vehicle in response to the concluded power transaction (S340).

[0101] Specifically, when a power transaction is concluded, the vehicle is moved to the charging location included in the power transaction request information by the owner. The vehicle's battery is electrically connected to a power device located at that location and discharged. Once the amount of power traded has been discharged, the power management device receives the battery discharge amount from the vehicle's BMS.

[0102] The power management device can update the amount of charging power for each type of stored energy based on the amount of power discharged by the battery in response to power transactions.

[0103] Fig. 5 is a reference diagram for explaining a method for updating charging power information according to an embodiment of the present invention. Here, Fig. 5 shows a screen of a power management device that displays charging power information.

[0104] As shown in Fig. 5(A), if the power amount of the first type (PV power) is 3 kWh and the power amount of the second type (grid power) is 6 kWh before discharge, the power management device can check the discharge amount (3 kWh) according to the power transaction and change the power amount of the first type (PV power) to 0 kWh, as shown in Fig. 5(B).

[0105] Once the power transaction discharge is completed, the power management device can provide the power transaction device with the amount of discharge resulting from the power transaction to calculate the power transaction fee. The power transaction device can calculate the power transaction fee (KRW) based on the amount of discharge (kWh) resulting from the power transaction and the power purchase price (KRW / kWh). The power transaction device can then provide the calculated power transaction fee to the charging request device, thereby facilitating payment of the power transaction fee.

[0106]

[0107] FIG. 6 is a flowchart of a power management method according to another embodiment of the present invention. Here, the power management method illustrated in FIG. 6 can be performed by a power management device that manages the power of an EV battery.

[0108] The power management device can record information about the charging power of the EV battery by classifying it by energy type (S610).

[0109] The power management device can record the charging power of the EV battery by classifying it into a first type, which is charged using a renewable energy source, and a second type, which is charged using grid power. Here, the first type of power may refer to power generated by a power generation device using one or more renewable energy sources, including solar energy, solar thermal energy, bio energy, wind energy, hydroelectric energy, and geothermal energy.

[0110] The power management device can receive and record the charging power amount for each energy type of the EV battery from the energy management device of the energy storage system at a predetermined time interval.

[0111] Specifically, the energy management device can collect one or more of the amount of power P_grid(t) supplied from the grid or output to the grid side, the charge / discharge amount of the ESS battery P_bat_ESS(t), the amount of power generated by the renewable energy-based power generation device P_PV(t), the amount of power consumed by the load P_load(t), and the charge / discharge amount of the EV battery P_bat_EV(t). Here, the energy management device can classify the charge power amount or SOC of the EV battery into the first type and the second type using the collected information. That is, the energy management device can monitor the flow of power by energy type (the first type and the second type) within the energy storage system to calculate the charge power amount for the EV battery by energy type, respectively. The energy management device can calculate the charge power amount for the EV battery by energy type at a predetermined time interval and transmit the calculation result to the power management device.

[0112] A power management device may receive a power transaction request from a charging request device or a power transaction device (S620). Here, the power transaction request information may include one or more of the following: a requested energy type, a requested charging power amount, a purchase price, a charging location, and a power supply time.

[0113] The power management device can determine whether to conclude a power transaction based on whether power can be provided and whether the user accepts the transaction (S630).

[0114] Specifically, the power management device can determine whether the EV battery can provide power based on the requested energy type and requested charging power amount included in the power transaction request information and the charging power amount by energy type of the EV battery.

[0115] If the EV battery is capable of providing power and a transaction acceptance signal is input from the user, the power management device can determine that a power transaction has been concluded (S640).

[0116] Thereafter, the power management device can transmit power transaction result information including data indicating that a power transaction has been established to the charging request device or the power transaction device.

[0117] After a power transaction is concluded, the power management device can check the amount of power discharged by the EV battery in response to the concluded power transaction (S650).

[0118] Specifically, once a power transaction is concluded, the EV is moved to the charging location included in the power transaction request information by the owner. The EV battery is electrically connected to a power device located at that location and discharged. Once the amount of power traded has been discharged, the power management device receives the discharged amount of the EV battery from the EV's BMS.

[0119] The power management device can update the charging power amount for each stored energy type based on the amount of power discharged by the EV battery in response to power transactions.

[0120] Once the power transaction discharge is completed, the power management device can provide the power transaction device with the amount of discharge resulting from the power transaction to calculate the power transaction cost (S660). Here, the power transaction device can calculate the power transaction cost (KRW) based on the amount of discharge resulting from the power transaction (kWh) and the power purchase price (KRW / kWh). The power transaction device can then provide the calculated power transaction cost to the charging request device, thereby facilitating payment of the power transaction cost.

[0121]

[0122] Figure 7 is a block diagram of a power management device according to an embodiment of the present invention.

[0123] A power management device (700) according to an embodiment of the present invention is a device that manages the power of a battery of a mobile means, and can be linked with one or more of a BMS of the mobile means, a charger of the mobile means, and an energy management device.

[0124] A power management device (700) may include at least one processor (710), a memory (720) that stores at least one command executed through the processor, and a transmission / reception device (730) that is connected to a network and performs communication.

[0125] The at least one command may include: a command for storing information about the charging power of the battery by classifying it by energy type; a command for determining whether to conclude a power transaction based on the amount of charging power of the specific energy type when a power transaction request for charging power of a specific energy type is received; and a command for checking the amount of power discharged by the battery in response to the power transaction when the power transaction is concluded.

[0126] The command for classifying and storing information about the charging power of the battery by energy type may include a command for classifying and recording the charging power of the battery by type 1, which is charged using a renewable energy source, and type 2, which is charged using grid power.

[0127] The command to classify and store information on the charging power of the above battery by energy type may include a command to receive and record the charging power amount by energy type at a predetermined time from an energy management device of an energy storage system linked to the above means of transportation.

[0128] The command for determining whether to conclude the above power transaction may include a command for receiving power transaction request information including a requested energy type and a requested charging power amount from a charging request device or a power transaction device; and a command for determining whether the battery can provide power based on the requested energy type and the requested charging power amount and the charging power amount for each energy type of the battery.

[0129] The command for determining whether to conclude the above power transaction may include a command for determining that the power transaction is concluded when it is determined that power provision is possible and a transaction acceptance signal is input from the user.

[0130] The command to check the amount of power discharged by the battery may include a command to update the amount of power charged by each stored energy type based on the amount of power discharged by the battery in response to the power transaction.

[0131] The at least one command may further include a command to provide the amount of power discharged by the battery to the power trading device for calculating power transaction costs.

[0132] The power management device (700) may also include an input interface device (740), an output interface device (750), a storage device (760), etc. Each component included in the power management device (700) may be connected by a bus (770) and communicate with each other.

[0133] Here, the processor (710) may refer to a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which methods according to embodiments of the present invention are performed. The memory (or storage device) may be comprised of at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory may be comprised of at least one of a read-only memory (ROM) and a random access memory (RAM).

[0134] The operations of the method according to an embodiment of the present invention can be implemented as a computer-readable program or code on a computer-readable recording medium. A computer-readable recording medium includes any type of recording device that stores data readable by a computer system. Furthermore, a computer-readable recording medium can be distributed across network-connected computer systems, allowing the computer-readable program or code to be stored and executed in a distributed manner.

[0135] While some aspects of the present invention have been described in the context of a device, they may also represent a description of a corresponding method, wherein a block or device corresponds to a method step or a feature of a method step. Similarly, aspects described in the context of a method may also be described as a corresponding block or item or a feature of a corresponding device. Some or all of the method steps may be performed by (or using) a hardware device, such as, for example, a microprocessor, a programmable computer, or an electronic circuit. In some embodiments, one or more of the most significant method steps may be performed by such a device.

[0136] Although the present invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and changes may be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below.

Claims

1. A power management device that manages the power of a battery included in a means of transportation. at least one processor; and A memory that stores at least one instruction to be executed through at least one processor, At least one of the above commands, A command to store information about the charging power of the above battery by classifying it by energy type; When a power transaction request for charging power of a specific energy type is received, a command to determine whether to conclude a power transaction based on the charging power amount of the specific energy type; and A power management device, comprising a command to check the amount of power discharged by the battery in response to the power transaction when the power transaction is concluded.

2. In claim 1, A command to store information about the charging power of the above battery by classifying it by energy type, A power management device including a command for recording the amount of power charged in the battery, classified into a first type charged using a renewable energy source and a second type charged using grid power.

3. In claim 1, A command to store information about the charging power of the above battery by classifying it by energy type, A power management device including a command to receive and record the amount of charging power for each energy type at a predetermined time from an energy management device of an energy storage system linked to the above-mentioned means of transportation.

4. In claim 1, The order to decide whether to conclude the above power transaction is: A command for receiving power transaction request information including the requested energy type and the requested charging power amount from a charging request device or a power transaction device; and A power management device including a command for determining whether the battery can provide power based on the required energy type and required charging power amount, and the charging power amount for each energy type of the battery.

5. In claim 4, The order to decide whether to conclude the above power transaction is: A power management device, comprising a command that determines that a power transaction is concluded when it is determined that power provision is possible and a transaction acceptance signal is input from a user.

6. In claim 1, The command to check the amount of power discharged by the above battery is: A power management device including a command for updating the amount of charging power for each stored energy type based on the amount of power discharged by the battery in response to the above power transaction.

7. In claim 1, At least one of the above commands, A power management device further comprising a command to provide the amount of power discharged by the battery to a power trading device for calculating power transaction costs.

8. A power management method by a power management device that manages the power of a battery included in a means of transportation, A step of classifying and storing information on the charging power of the above battery by energy type; When a power transaction request for charging power of a specific energy type is received, a step of determining whether to conclude a power transaction based on the charging power amount of the specific energy type; and A power management method, comprising a step of checking the amount of power discharged by the battery in response to the power transaction when the power transaction is concluded.

9. In claim 8, The step of storing information about the charging power of the above battery by classifying it by energy type is as follows: A power management method comprising a step of recording the charging power of the battery by classifying it into a first type charged using a renewable energy source and a second type charged using grid power.

10. In claim 8, The step of storing information about the charging power of the above battery by classifying it by energy type is as follows: A power management method comprising a step of receiving and recording a charging power amount by energy type at a predetermined time interval from an energy management device of an energy storage system linked to the above-mentioned means of transportation.

11. In claim 8, The step of deciding whether to conclude the above power transaction is as follows: A step of receiving power transaction request information including a requested energy type and a requested charging power amount from a charging request device or a power transaction device; and A power management method comprising a step of determining whether the battery can provide power based on the required energy type and required charging power amount and the charging power amount for each energy type of the battery.

12. In claim 11, The step of deciding whether to conclude the above power transaction is as follows: A power management method, comprising a step of determining that a power transaction is concluded when it is determined that power provision is possible and a transaction acceptance signal is input from a user.

13. In claim 8, The step of checking the amount of power discharged by the above battery is: A power management method comprising a step of updating the amount of power charged for each type of stored energy based on the amount of power discharged by the battery in response to the above power transaction.

14. In claim 8, A power management method further comprising a step of providing the amount of power discharged by the battery to a power trading device for calculating power transaction costs.

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