Control device and control method

Abstract

To provide a control device which is capable of ensuring connection speedily by standard of electric power transmission that a user desires between an electric power stand capable of transmitting electric power corresponding to request for adjusting electric power demand state in a power network and an electric vehicle.SOLUTION: A charge control ECU 10 (control device) is provided with a communication part 13 which communicates with EVSE 300 (electric power stand) at which external charge (electric power transmission) is executed between an electric vehicle 100 and the electric power stand. The communication part 13 notifies it to the EVSE 300 that the electric vehicle 100 corresponds to ISO15118-20 (first standard) when the user desires response for electric power demand-supply adjustment request and notifies it to the EVSE 300 that the electric vehicle 100 corresponds to ISO15118-2 (second standard) when the user does not desire response for the electric power demand-supply adjustment request.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a control device and a control method. [Background technology]

[0002] JP 2022-139080 A (Patent Document 1) discloses a vehicle and a charging facility in which external charging is performed using first to fifth charging standards. Priorities are set in advance for the first to fifth charging standards. A connection attempt process is performed in descending order of priority for the charging standards. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-139080 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the above Patent Document 1, as described above, the priority order of charging standards is set in advance. Furthermore, although not described in the above Patent Document 1, a vehicle can perform charging corresponding to a request for adjusting the power supply and demand state in a power grid (hereinafter referred to as VPP (Virtual Power Plant) charging) and charging not corresponding to VPP charging (non-VPP charging). Here, it is assumed that the priority order of the charging standard corresponding to VPP charging is set in advance higher than that of the charging standard corresponding to non-VPP charging. In this case, for example, even if the user does not desire VPP charging, a connection based on the charging standard corresponding to VPP charging is preferentially attempted, and it is considered that it takes a long time until a connection based on the charging standard corresponding to the non-VPP charging desired by the user is established.

[0005] The present disclosure has been made to solve the above-mentioned problems, and its purpose is to provide a control device and control method that can quickly establish a connection based on the power transmission standard desired by a user between an electric vehicle and a power stand that is capable of transmitting power in response to a request for adjusting the power supply and demand state in a power grid. [Means for solving the problem]

[0006] A control device according to a first aspect of the present disclosure is a control device that controls power transmission including at least one of charging from a power grid and discharging to the power grid, and includes an acquisition unit that acquires information regarding whether or not a user of an electric vehicle desires a response to a request for adjusting a power supply and demand state in the power grid, and a communication unit that communicates with a power station through which power transmission is performed between the electric vehicle and the electric vehicle. The electric vehicle is compatible with a first standard that is a power transmission standard corresponding to the request, and a second standard that is a power transmission standard that does not correspond to the request. The communication unit notifies the power station that the electric vehicle is compatible with the first standard when the user desires a response to the request, and notifies the power station that the electric vehicle is compatible with the second standard when the user does not desire a response to the request.

[0007] In the control device according to the first aspect of the present disclosure, as described above, when the user wishes to respond to the request, the power stand is notified that the electric vehicle complies with the first standard, and when the user does not wish to respond to the request, the power stand is notified that the electric vehicle complies with the second standard. In this way, when a process for connecting the power stand and the electric vehicle is executed, the power stand can be notified of a standard that corresponds to the user's desire to respond to the request. As a result, it is possible to prevent a connection process based on a power transmission standard that does not correspond to the user's desire from being executed. In this way, a connection between the electric vehicle and the power stand can be quickly established based on the power transmission standard that corresponds to the user's desire.

[0008] In the control device according to the first aspect, preferably, when the communication unit receives information indicating that the power stand does not comply with the first standard after notifying the power stand that the electric vehicle complies with the first standard, the communication unit notifies the power stand that the electric vehicle complies with the second standard. With this configuration, even if the power stand does not comply with the first standard, it is possible to quickly connect the power stand and the electric vehicle using the second standard.

[0009] In the control device according to the first aspect, preferably, when the user wishes to respond to the request, the communication unit notifies the power stand that the first standard has the highest priority for use in power transmission, followed by the second standard, and when the user does not wish to respond to the request, the communication unit notifies the power stand that the second standard has the highest priority for use in power transmission, followed by the first standard. With this configuration, the priority order of the power transmission standards notified to the power stand can be changed in accordance with the user's desire for the request.

[0010] A control method according to a second aspect of the present disclosure is a control method for controlling power transmission including at least one of charging from a power grid and discharging to a power grid, and includes the steps of: acquiring information on whether or not a user of an electric vehicle desires a response to a request for adjusting a power supply and demand state in the power grid; and notifying a power station through which power transmission is performed between the electric vehicle and the electric vehicle of a power transmission standard compatible with the electric vehicle. The electric vehicle is compatible with a first standard, which is a power transmission standard compatible with the request, and a second standard, which is a power transmission standard not compatible with the request. The notifying step includes the steps of notifying the power station that the electric vehicle is compatible with the first standard when the user desires a response to the request, and notifying the power station that the electric vehicle is compatible with the second standard when the user does not desire a response to the request.

[0011] In the management method according to the second aspect of the present disclosure, as described above, if the user wishes to respond to the request, the power stand is notified that the electric vehicle complies with the first standard, and if the user does not wish to respond to the request, the power stand is notified that the electric vehicle complies with the second standard. This makes it possible to provide a control method that can quickly establish a connection between the power stand and the electric vehicle based on the power transmission standard desired by the user. Effect of the Invention

[0012] According to the present disclosure, a connection based on the power transmission standard desired by a user can be quickly established between an electric vehicle and a power station capable of transmitting power in response to a request for adjusting the power supply and demand state in a power grid. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a diagram showing a configuration of a system according to a first embodiment. [Diagram 2] FIG. 4 is a sequence diagram showing control of the system according to the first embodiment. [Diagram 3] FIG. 11 is a diagram showing a configuration of a system according to a second embodiment. [Figure 4] FIG. 11 is a sequence diagram showing control of the system according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and the description thereof will not be repeated.

[0015] [First embodiment] 1 is a diagram showing the configuration of a system 1 according to a first embodiment. The system 1 includes an electric vehicle 100, a user terminal (such as a smartphone) 200, an EVSE (Electric Vehicle Supply Equipment) 300, a grid management server 400, a server 500, and a power grid PG. The EVSE 300 and the power grid PG are examples of a "power stand" and a "power grid" in the present disclosure, respectively.

[0016] The power system PG is a power grid constructed by a power plant and a power transmission and distribution facility (not shown). In this embodiment, an electric power company serves as both a power generation business operator and a power transmission and distribution business operator. The electric power company corresponds to a general power transmission and distribution business operator, and maintains and manages the power system PG. The electric power company corresponds to a manager of the power system PG.

[0017] The power system management server 400 manages the power supply and demand in the power system PG (power grid). The power system management server 400 belongs to a power company. The power system management server 400 transmits a request (power supply and demand adjustment request) to the server 500 to adjust the power supply and demand state in the power system PG based on the power generated and consumed by each power adjustment resource managed by the power system management server 400.

[0018] The server 500 is a server managed by an aggregator. The aggregator is an electric utility that provides an energy management service by bundling a plurality of power adjustment resources in a region, a specific facility, and the like.

[0019] The server 500 requests the electric vehicle 100 to perform "external charging" as one means for adjusting the power demand (power supply and demand state) of the power system PG. External charging means charging the electric vehicle 100 using power from the power system PG. The server 500 transmits a request signal requesting external charging to the electric vehicle 100 or a user terminal 200 owned by the user of the electric vehicle 100. External charging is an example of "power transmission" in the present disclosure.

[0020] External charging is performed between electric vehicle 100 and power grid PG via EVSE 300. Electric vehicle 100 includes, for example, a plug-in hybrid electric vehicle (PHEV), a battery electric vehicle (BEV), and a fuel cell electric vehicle (FCEV). A battery (not shown) of electric vehicle 100 is charged by external charging.

[0021] EVSE 300 means a power supply facility for vehicles. Electric vehicle 100 is configured to be electrically connectable to EVSE 300. For example, a charging cable (not shown) of EVSE 300 is connected to an inlet (not shown) of electric vehicle 100, thereby enabling electric power to be exchanged between EVSE 300 and electric vehicle 100.

[0022] Furthermore, the server 500 is configured to manage information on registered electric vehicles 100 (hereinafter also referred to as "vehicle information"), information on each registered user (hereinafter also referred to as "user information"), and information on registered EVSEs 300 (hereinafter also referred to as "EVSE information"). The user information, vehicle information, and EVSE information are distinguished by identification information (ID) and stored in a memory (not shown) of the server 500.

[0023] The electric vehicle 100 includes a charge control ECU (Electric Control Unit) 10, a DCM (Data Communication Module) 20, and an input device 30 (such as a car navigation system). The charge control ECU 10 is an example of a "control device" in the present disclosure.

[0024] The charging control ECU 10 controls external charging between the EVSE 300 and the electric vehicle 100. The charging control ECU 10 has a processor 11, a memory 12, and a communication unit 13. The processor 11 is an example of an "acquisition unit" in the present disclosure.

[0025] The processor 11 acquires ON / OFF information of the VPP function. The ON / OFF information of the VPP function includes information on whether the user of the electric vehicle 100 desires to respond to a request for adjusting the power supply and demand state in the power system PG (hereinafter referred to as a power supply and demand adjustment request). In the following, the ON state of the VPP function indicates a state in which the user desires to respond to the power supply and demand adjustment request. Also, the OFF state of the VPP function indicates a state in which the user does not desire to respond to the power supply and demand adjustment request. The processor 11 acquires the ON / OFF information of the VPP function from at least one of the DCM 20 and the input device 30.

[0026] The memory 12 stores information used in the programs (for example, maps, formulas, and various parameters) in addition to the programs executed by the processor 11. The communication unit 13 includes various communication I / Fs. The processor 11 controls the communication unit 13.

[0027] The communication unit 13 is configured to be able to communicate with the EVSE 300. The communication unit 13 exchanges information about a charging standard (charging protocol) used when external charging is performed between the communication unit 13 and the EVSE 300.

[0028] In the first embodiment, the electric vehicle 100 complies with a charging standard called ISO15118-20 and a charging standard called ISO15118-2. ISO15118-20 is a standard for external charging that complies with a request for power supply and demand adjustment (hereinafter referred to as VPP charging). ISO15118-2 is a standard for external charging that does not complies with a request for power supply and demand adjustment (hereinafter referred to as non-VPP charging). Note that ISO15118-20 and ISO15118-2 are examples of the "first standard" and "second standard" of the present disclosure, respectively.

[0029] Here, in the EVSE, for example, it is assumed that the charging standard corresponding to VPP charging is set in advance to have a higher priority than the charging standard corresponding to non-VPP charging. In this case, even if the user does not desire VPP charging, a connection using the charging standard corresponding to VPP charging is preferentially attempted. For this reason, it is considered that it takes a long time to establish a connection using the charging standard corresponding to non-VPP charging desired by the user.

[0030] Therefore, in the first embodiment, when the user desires to respond to the power supply and demand adjustment request (when the VPP function is ON), the communication unit 13 notifies the EVSE 300 that the electric vehicle 100 is compatible with ISO15118-20. Also, when the user does not desire to respond to the power supply and demand adjustment request (when the VPP function is OFF), the communication unit 13 notifies the EVSE 300 that the electric vehicle 100 is compatible with ISO15118-2. This makes it possible to prevent the process of connecting the EVSE 300 and the electric vehicle 100 using a charging standard that does not comply with the user's desire from being performed (attempted). As a result, it is possible to prevent time loss from occurring in the connection between the EVSE 300 and the electric vehicle 100.

[0031] <Sequence control in systems> The sequence control in the system 1 will be described in detail with reference to Fig. 2. Note that the example shown in Fig. 2 is merely an example, and the present disclosure is not limited to the example shown in Fig. 2. Note that the control of the electric vehicle 100 shown in Fig. 2 is executed by the charging control ECU 10.

[0032] In step S1, the electric vehicle 100 acquires VPP function ON / OFF information. Specifically, the charging control ECU 10 acquires the VPP function ON / OFF information from the DCM 20 or the input device 30.

[0033] In step S2, the electric vehicle 100 and the EVSE 300 are connected (connected) by a charging cable (not shown).

[0034] In step S3, the electric vehicle 100 checks the VPP function ON / OFF information acquired in step S1.

[0035] In step S4, the electric vehicle 100 determines whether the information acquired in step S1 indicates that the VPP function is ON (a state in which external charging that does not correspond to a power supply and demand adjustment request is desired). If the VPP function is ON (Yes in S4), the process proceeds to step S5. If the information acquired indicates that the VPP function is OFF (a state in which external charging that does not correspond to a power supply and demand adjustment request is desired) (No in S4), the process proceeds to step S9.

[0036] In step S5, electric vehicle 100 requests EVSE 300 through communication unit 13 to select ISO15118-20 as the charging standard to be used.

[0037] In step S6, EVSE 300 transmits a response to the request of step S5 to electric vehicle 100. If EVSE 300 supports ISO 15118-20, EVSE 300 transmits a response (OK) that accepts the request of step S5. If EVSE 300 does not support ISO 15118-20, EVSE 300 transmits a response (NG) that rejects the request of step S5.

[0038] In step S7, the electric vehicle 100 determines whether the response in step S6 is NG. If the response is NG (Yes in S7), the process proceeds to step S9. If the response is OK (No in S7), the process proceeds to step S13.

[0039] In step S8, EVSE 300 determines whether or not an OK response was transmitted in step S6. If an OK response was transmitted (Yes in S8), the process proceeds to step S13. If an OK response was not transmitted (No in S8), the process proceeds to step S10.

[0040] In step S9, electric vehicle 100 requests EVSE 300 through communication unit 13 to select ISO15118-2 as the charging standard to be used.

[0041] In step S10, EVSE 300 transmits a response to the request of step S9 to electric vehicle 100. If EVSE 300 supports ISO 15118-2, EVSE 300 transmits a response (OK) that accepts the request of step S9. If EVSE 300 does not support ISO 15118-2, EVSE 300 transmits a response (NG) that rejects the request of step S9.

[0042] In step S11, the electric vehicle 100 determines whether the response in step S10 is NG. If the response is NG (Yes in S11), the process ends. If the response is OK (No in S11), the process proceeds to step S13.

[0043] In step S12, EVSE 300 determines whether or not an OK response was transmitted in step S10. If an OK response was transmitted (Yes in S12), the process proceeds to step S13. If an NG response was transmitted (No in S12), the process ends.

[0044] In step S13, electric vehicle 100 and EVSE 300 proceed with the charging sequence in accordance with the selected charging standard. Specifically, if No in step S7 (Yes in S8), the charging sequence proceeds in accordance with ISO 15118-20. On the other hand, if No in step S11 (Yes in S12), the charging sequence proceeds in accordance with ISO 15118-2.

[0045] As described above, in the first embodiment, the communication unit 13 of the electric vehicle 100 notifies the EVSE 300 that the electric vehicle 100 complies with ISO15118-20 when the user desires to respond to the power supply and demand adjustment request. In addition, the communication unit 13 notifies the EVSE 300 that the electric vehicle 100 complies with ISO15118-2 when the user does not desire to respond to the power supply and demand adjustment request. This makes it possible to prevent the electric vehicle 100 and the EVSE 300 from being connected by ISO15118-2 when the user desires to respond to the power supply and demand adjustment request. As a result, external charging between the electric vehicle 100 and the EVSE 300 can be smoothly performed in a format as desired by the user.

[0046] [Second embodiment] Next, a second embodiment of the present disclosure will be described with reference to Fig. 3 and Fig. 4. In the second embodiment, information on the priority of charging standards is transmitted from the electric vehicle 100A to the EVSE 300. Note that the same components as those in the first embodiment are denoted by the same reference numerals and will not be described repeatedly.

[0047] 3 is a diagram showing the configuration of a system 2 according to the second embodiment. The system 2 differs from the system 1 of the first embodiment in that the system 2 includes an electric vehicle 100A instead of the electric vehicle 100 of the first embodiment.

[0048] The electric vehicle 100A differs from the electric vehicle 100 of the first embodiment in that the electric vehicle 100A includes a charge control ECU 10A instead of the charge control ECU 10 of the first embodiment. The charge control ECU 10A includes a processor 11A, a memory 12A, and a communication unit 13A. The processor 11A is an example of an "acquisition unit" in the present disclosure. The charge control ECU 10A is an example of a "control device" in the present disclosure.

[0049] Assume that the electric vehicle 100A complies with a charging standard called ISO15118-20, a charging standard called ISO15118-2, and a charging standard called DIN70121. Like ISO15118-2, DIN70121 is a charging standard that supports non-VPP charging. Note that DIN70121 is an example of the "second standard" of the present disclosure.

[0050] <Sequence control in systems> The sequence control in the system 2 will be described in detail with reference to Fig. 4. Note that the description of the same processes as those in the first embodiment may be simplified. Note that the control of the electric vehicle 100A shown in Fig. 4 is executed by the charging control ECU 10A.

[0051] Steps S21 to S24 are the same processes as steps S1 to S4 (see FIG. 2) in the first embodiment. If step S24 is Yes, the process proceeds to step S25. If step S24 is No, the process proceeds to step S28. After step S22, the process of the EVSE 300 proceeds to step S26.

[0052] In step S25, electric vehicle 100A notifies EVSE 300 through communication unit 13A that the charging standards to be used have the highest priority, in the order of ISO15118-20, ISO15118-2, and DIN70121. That is, EVSE 300 is notified that the charging standards corresponding to VPP charging have a higher priority than the charging standards corresponding to non-VPP charging. Also, EVSE 300 is notified that ISO15118-2 has a higher priority than DIN70121.

[0053] In step S26, EVSE 300 determines whether or not the request in step S25 has been received. If the request in step S25 has been received (Yes in S26), the process proceeds to step S27. If the request in step S25 has not been received (No in S26), the process proceeds to step S29.

[0054] In step S27, EVSE 300 selects a charging standard based on the priority in the request in step S25. Specifically, EVSE 300 selects the charging standard with the highest priority in step S25 from among the charging standards that EVSE 300 can support. For example, when EVSE 300 can support both ISO15118-20 and ISO15118-2, ISO15118-20 is selected. The selected charging standard is notified from EVSE 300 to electric vehicle 100A.

[0055] Meanwhile, in step S28, electric vehicle 100A notifies EVSE 300 through communication unit 13A that the charging standards to be used have the highest priority, in the order of ISO15118-2, DIN70121, and ISO15118-20. That is, EVSE 300 is notified that the charging standards corresponding to non-VPP charging have a higher priority than the charging standards corresponding to VPP charging. Also, EVSE 300 is notified that ISO15118-2 has a higher priority than DIN70121.

[0056] In step S29, electric vehicle 100A determines whether or not the request in step S28 has been received. If the request in step S28 has been received (Yes in S29), the process proceeds to step S30. If the request in step S28 has not been received (No in S29), the process proceeds to step S31.

[0057] In step S30, EVSE 300 selects a charging standard based on the priority in the request in step S28. Specifically, EVSE 300 selects the charging standard with the highest priority in step S28 from among the charging standards that EVSE 300 can support. For example, when EVSE 300 can support both ISO15118-20 and ISO15118-2, ISO15118-2 is selected. The selected charging standard is notified from EVSE 300 to electric vehicle 100A.

[0058] In step S31, the electric vehicle 100A and the EVSE 300 proceed with the charging sequence in accordance with the selected charging standard.

[0059] The other configurations are the same as those in the first embodiment, and therefore will not be described repeatedly.

[0060] In the first embodiment, the electric vehicle 100 is shown to be compatible with only ISO15118-20 and ISO15118-2, but the present disclosure is not limited thereto. The electric vehicle 100 of the first embodiment may also be compatible with ISO15118-20, ISO15118-2, and DIN70121, similar to the electric vehicle 100A of the second embodiment. In this case, after the response in step S10 of FIG. 2 is NG, the electric vehicle 100 may request DIN70121 from the EVSE 300.

[0061] In the above first and second embodiments, the processing when the electric vehicle 100 (100A) performs external charging is described as an example, but the present disclosure is not limited to this. Processing similar to that of the above first and second embodiments may be performed during external power feeding (external discharging) in which electric power is supplied from the electric vehicle 100 (100A) to the power grid PG. Furthermore, the above processing may be performed in both external charging and external power feeding.

[0062] In the above first and second embodiments, an example has been described in which the charge control ECU 10 (10A) of the electric vehicle 100 (100A) performs control to notify the EVSE 300 of a request for a charging standard, but the present disclosure is not limited to this. A control device (server) provided separately from the electric vehicle may perform the above control.

[0063] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present disclosure is defined by the claims, not by the description of the embodiments described above, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0064] 10, 10A charging control ECU (control device), 11, 11A processor (acquisition unit), 13, 13A communication unit, 100, 100A electric vehicle, 300 EVSE (power station), PG power system (power grid).

Claims

1. A control device for controlling power transmission including at least one of charging from a power grid and discharging to the power grid, an acquisition unit that acquires information regarding whether a user of an electric vehicle desires a response to a request for adjusting a power supply and demand state in the power grid; a communication unit that communicates with a power station between which the power transmission is performed and the electric vehicle; the electric vehicle is compatible with a first standard that is a standard for the power transmission corresponding to the request and a second standard that is a standard for the power transmission that does not correspond to the request, The communication unit is notifying the power station that the electric vehicle complies with the first standard if the user wishes to respond to the request; A control device that notifies the power station that the electric vehicle complies with the second standard if the user does not wish to respond to the request.

2. The communication unit is 2. The control device according to claim 1, wherein, after notifying the power station that the electric vehicle complies with the first standard, if information indicating that the power station does not complies with the first standard is received, the control device notifies the power station that the electric vehicle complies with the second standard.

3. The communication unit is When the user wishes to respond to the request, the power stand is notified that the first standard and the second standard have a higher priority for use in the power transmission, in that order; The control device according to claim 1 or 2, wherein when the user does not wish to respond to the request, the control device notifies the power stand that the second standard has a higher priority than the first standard for use in the power transmission.

4. A control method for controlling power transmission including at least one of charging from a power grid and discharging to the power grid, comprising: obtaining information regarding whether a user of an electric vehicle wishes to respond to a request for adjusting a power supply and demand state in the power grid; notifying a power station, which performs the power transmission between the power station and the electric vehicle, of a standard of the power transmission corresponding to the electric vehicle; the electric vehicle is compatible with a first standard that is a standard for the power transmission corresponding to the request and a second standard that is a standard for the power transmission that does not correspond to the request, The notifying step includes a step of notifying the power stand that the electric vehicle complies with the first standard when the user wishes to respond to the request, and a step of notifying the power stand that the electric vehicle complies with the second standard when the user does not wish to respond to the request.

Images