Power management system

Abstract

To allow a user to select settings according to the intention of the user.SOLUTION: A power management system 1 includes an on-board storage battery 4, a stationary storage battery 3 and a power conditioner 10. The power conditioner 10 includes: an AC / DC inverter 12 provided between a DC bus LB and a load connected to a system power supply Q; and a controller 13 controlling the charge / discharge of the on-board storage battery 4 and the stationary storage battery 3; and a reception unit receiving a setting operation from a user. When user setting information is received via the reception unit, the controller 13 controls the charge / discharge of the on-board storage battery 4 and the stationary storage battery 3 based on the user setting information and power consumption at an in-house load 5.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a power management system that manages the charging and discharging of stationary storage batteries and vehicle-mounted storage batteries. [Background technology]

[0002] With the widespread use of electric vehicles, technological developments have been underway in recent years to enable power interchange between stationary storage batteries and vehicle-mounted storage batteries. Furthermore, technologies for supplying solar-generated power to storage batteries and electric vehicles are known.

[0003] For example, Patent Document 1 discloses a charging / discharging system configured to stably supply solar-generated power to a storage battery and an electric vehicle with minimal control. Patent Document 1 also discloses a technology for transferring power from a stationary storage battery to an on-board storage battery.

[0004] Patent Document 2 discloses a technique for preventing excessive burden from being placed on a storage battery when transferring power from an in-vehicle storage battery to a stationary storage battery. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5990786 [Patent Document 2] Patent Publication No. 2021-93788 Summary of the Invention [Problem to be solved by the invention]

[0006] In order to reduce electricity costs, there is a demand for utilizing stand-alone operation as much as possible while minimizing the use of grid power supplied from a grid power source. In such systems, when stand-alone operation is achieved, there are cases where it is desirable to arbitrarily select the power supplier and the power destination among the stationary storage battery, the vehicle storage battery, and the load.

[0007] In addition, in general power management devices, default settings may be set for selecting the power supply source and destination. Even in such cases, there may be cases where a user wants to change the settings to their intended settings, different from the default settings, during a power outage or at night.

[0008] The present invention has been made in view of the above-mentioned problems, and specifically provides a method for supplying power between a stationary storage battery, an on-board storage battery, and a load during autonomous operation. [Means for solving the problem]

[0009] In a first aspect of the present invention, a power management system is provided, the power conditioner including an on-board storage battery mounted on a vehicle, a stationary storage battery connected to the on-board storage battery via a DC bus, and a power conditioner. The power conditioner includes an AC / DC inverter provided between the DC bus and a load connected to a power grid, a controller that controls charging and discharging of the on-board storage battery and the stationary storage battery based on mode setting information that sets charge / discharge modes of the on-board storage battery and the stationary storage battery and power consumption of the load, and a reception unit that receives user setting information that indicates a priority of charging and discharging of the on-board storage battery and the stationary storage battery set by a user, and when the user setting information is acquired via the reception unit, the controller controls charging and discharging of the on-board storage battery and the stationary storage battery based on the user setting information and power consumption of the load.

[0010] According to the configuration of the first aspect, in the default setting, the charging and discharging of the in-vehicle storage battery and the stationary storage battery are controlled based on the mode setting information and the power consumption of the load. When user setting information is acquired via the reception unit, the charging and discharging of the in-vehicle storage battery and the stationary storage battery are controlled based on the user setting information and the power consumption of the load. This allows the user to change the settings to reflect their intentions, for example, during a power outage or at night, when the user wants to change the settings to something different from the default settings. This enables the power supply within the power management system to be tailored to the situation at the time, such as a power outage.

[0011] In the first aspect, when a setting input of a load priority mode that prioritizes discharging to the load is received as the user setting information, the controller may supply discharge power from a discharging side battery, which is one of the vehicle storage battery and the stationary storage battery, to the load, and when the supplied power is greater than the power consumed by the load, control the controller to charge the surplus power to the charging side battery, which is the other of the vehicle storage battery and the stationary storage battery.

[0012] According to this configuration, in addition to the effect of the first aspect, it is possible to reduce the need to purchase electricity.

[0013] In the first aspect, when a setting input of a charge priority mode that prioritizes charging between batteries is received as the user setting information, the controller may control the controller to charge the discharged power from a discharge side battery, which is one of the vehicle storage battery and the stationary storage battery, to a charge side battery, which is the other of the vehicle storage battery and the stationary storage battery, and when the discharged power of the discharge side battery is greater than the charge power to the charge side battery, the controller may control the controller to supply the surplus to the load.

[0014] This configuration enables maximum charging of the storage battery, and satisfies user needs such as use of an EV (Electric Vehicle) in the event of a disaster or as a backup for domestic loads.

[0015] In the second aspect, the power conditioner further includes a solar cell panel, and the power conditioner further includes a solar cell DC / DC converter that converts the output voltage of the solar cell panel to a predetermined voltage and outputs it to the DC bus, and when the load priority mode setting is input as the user setting information, the controller supplies discharge power from the solar cell panel and the discharge side storage battery to the load, and when the supplied power is greater than the power consumed by the load, controls the surplus power to be charged to the charge side storage battery.

[0016] This configuration makes it possible to reduce the amount of electricity purchased from the grid.

[0017] In a second aspect of the present invention, a power management system is provided, the power conditioner including an on-board storage battery mounted on a vehicle, a stationary storage battery connected to the on-board storage battery via a DC bus, and a power conditioner. The power conditioner includes an AC / DC inverter provided between the DC bus and a load connected to a grid power supply, a controller that controls charging and discharging of the on-board storage battery and the stationary storage battery based on mode setting information that sets charge and discharge modes of the on-board storage battery and the stationary storage battery and on power consumption of the load, and an operation input unit that accepts setting operations from a user, and the controller is configured to control charging and discharging of the on-board storage battery and the stationary storage battery based on the setting operation, giving priority to the mode setting information, when an operation input is made to the operation input unit.

[0018] According to the configuration of the second aspect, as in the first aspect, when a user wants to change the settings to their own intentions, different from the default settings, for example, during a power outage or at night, the settings can be changed to reflect the user's intentions. This makes it possible to supply power within the power management system in accordance with the situation at the time, such as a power outage. [Effects of the Invention]

[0019] According to the present invention, the power supply between the stationary storage battery, the vehicle storage battery, and the load during autonomous operation can be set to a setting that is different from the default setting and that is intended by the user. [Brief explanation of the drawings]

[0020] [Figure 1] Block diagram showing the overall configuration of the power management system [Figure 2] Flowchart showing an example of the operation of a power management system [Figure 3] Flowchart showing an example of a default setting operation [Figure 4] An example of power flow during default setting operation (nighttime) [Figure 5] A diagram showing an example of power flow during user-configured operation (nighttime) [Figure 6] Another example of power flow during user-configured operation (nighttime) [Figure 7] An example of power flow during default setting operation (daytime) [Figure 8] A diagram showing an example of power flow during user-configured operation (daytime) [Figure 9] Another example of power flow during user-defined operation (daytime) [Figure 10] Flowchart showing another example of the operation of the power management system DETAILED DESCRIPTION OF THE INVENTION

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the present invention, its scope of application, or its uses.

[0022] FIG. 1 shows an example of the configuration of a power management system 1.

[0023] The power management system 1 includes a solar panel 2, a stationary storage battery 3, an in-vehicle storage battery 4, a power conditioner 10, a household load 5 (corresponding to a load), and a remote controller 6 (corresponding to an operation reception unit).

[0024] The stationary storage battery 3 is a stationary storage battery installed in a house, various facilities, etc., and is connected to the DC bus LB via a DC / DC converter 31 for the stationary storage battery. In a charge mode, the DC / DC converter 31 performs a step-down operation on the bus voltage of the DC bus LB to output charging power to the stationary storage battery 3, while in a discharge mode, it converts the output voltage of the stationary storage battery 3 to a predetermined voltage and outputs it to the DC bus LB. The DC / DC converter 31 may be built into the stationary storage battery 3 or the power conditioner 10.

[0025] The on-board battery 4 is a storage battery that is mounted on a vehicle such as an electric vehicle and used as a power source for the vehicle, and is connected to the DC bus LB via a DC / DC converter 41 for the on-board battery. In a charge mode, the DC / DC converter 41 performs a step-down operation on the bus voltage of the DC bus LB to output charging power to the on-board battery 4, while in a discharge mode, it converts the output voltage of the on-board battery 4 to a predetermined voltage and outputs it to the DC bus LB. The DC / DC converter 41 may be built into the on-board battery 4 or the power conditioner 10.

[0026] The power conditioner 10 includes a DC / DC converter 11 for solar cells, an AC / DC inverter 12, a controller 13, and a wireless communication unit 7 (corresponding to a reception unit). The power conditioner 10 is configured to be able to operate in a discharge mode and a charge mode. In the discharge mode, the power generated by the solar cell panel 2, the power stored in the stationary storage battery 3, and / or the power stored in the vehicle-mounted storage battery 4 are received as input, converted into AC power, and output to the domestic load 5. In the charge mode, the power generated by the solar cell panel 2 is received as input, and the DC / DC converter 11 converts the voltage of the power converted, and / or the AC power input from the grid power source Q is converted into DC power by the AC / DC inverter 12. The converted power is supplied to the stationary storage battery 3 and / or the vehicle-mounted storage battery 4. Note that the charge mode and the discharge mode may be collectively referred to as the "charge / discharge mode."

[0027] The DC / DC converter 11 converts the output voltage of the solar cell panel 2 into a predetermined voltage and outputs it to the DC bus LB. The solar cell panel 2 and the DC / DC converter 11 are connected by an electric line L1.

[0028] In a charging mode, the AC / DC inverter 12 converts AC input from the system power supply Q into DC and outputs the DC to the DC bus B, while in a discharging mode, it converts the bus voltage of the DC bus B into AC and outputs the AC to the domestic load 5. The system power supply Q and the AC / DC inverter 12 are connected by an electric line L2. The domestic load 5 is connected to the system power supply Q and the AC / DC inverter 12 via the electric line L2.

[0029] The controller 13 has a function of controlling the overall operation of the power management system 1. Specifically, the controller 13 has a function of controlling the charging and discharging of the on-board storage battery 4 and the stationary storage battery 3 based on the power generation information of the solar cell panel 2, the charge and discharge mode settings of the on-board storage battery 4 and the stationary storage battery 3, and charge and discharge power information derived from the power consumption of the domestic load 5. Here, the charge and discharge mode setting is a default mode setting preset in the controller 13 based on, for example, the time and the remaining capacity of the storage battery. Furthermore, the charge and discharge setting information includes, for example, mode setting information indicating whether the on-board storage battery 4 and the stationary storage battery 3 operate in a charge mode or a discharge mode, and information on the set power values ​​of the charge power and the discharge power, for each of the on-board storage battery 4 and the stationary storage battery 3. Note that in a configuration where the solar cell panel 2 is not connected (see FIGS. 4 and 5 ), the controller 13 has a function of controlling the charging and discharging of the on-board storage battery 4 and the stationary storage battery 3 based on the mode setting information for setting the charge and discharge modes of the on-board storage battery 4 and the stationary storage battery 3 and the power consumption of the domestic load 5.

[0030] Furthermore, when user setting information is acquired via the remote controller 6 or the wireless communication unit 7, the controller 13 applies the user setting information by giving priority to the charge / discharge setting information (default setting) described above. That is, when user setting information is acquired, the controller 13 is configured to control the charge / discharge of the stationary storage battery 3 and the vehicle storage battery 4 based on the user setting information. The user setting information is setting information indicating the priority of charging / discharging set by the user, and may be the same as the default setting or may be different from the default setting. The charge / discharge operations of the storage batteries 3, 4 and the domestic load 5 of the power management system 1 will be described later with specific examples.

[0031] The remote controller 6 and the wireless communication unit 7 function as a receiving unit that receives user setting information indicating the charging / discharging priority set by the user. The remote controller 6 is installed, for example, in a house together with the in-house loads 5, and receives input operations from the user regarding the user setting information using mechanical push buttons, touch sensors, touch panels, etc. The wireless communication unit 7 receives the user setting information via wireless communication from wireless transmission means such as a tablet 8 or a smartphone 9.

[0032] -Example of power management system operation- Next, an example of the operation of the power management system 1 will be described with reference to Figures 2 to 9. In reality, complex calculations including conditional branching and the like are performed, but here, a simplified outline of the contents related to this embodiment will be described.

[0033] (Example 1) In this operation example 1, the operation of the power management system 1 during nighttime hours will be described. Here, it is assumed that the default setting is to give top priority to charging the in-vehicle storage battery 4 during nighttime hours. Furthermore, during this operation, the power generation amount of the solar cell panel 2 is 0 [W], the power consumption of the home load is 2 [kW], and the charge command value is 5 [kW].

[0034] In step S10 of FIG. 2, the power management system 1 executes an operation set in the default settings (hereinafter referred to as "default setting operation").

[0035] FIG. 3 is a flow diagram showing an example of the default setting operation.

[0036] In step S11, the controller 13 receives an instruction from a higher-level interface (not shown) to operate the stationary storage battery 3 in load following mode and the vehicle-mounted storage battery 4 in forced charging mode as default settings, giving top priority to charging the vehicle-mounted storage battery 4.

[0037] In step S12, the controller 13 sets the power supply source and the power supply destination. Here, a command to prioritize charging the vehicle-mounted storage battery 4 has been received, so the controller 13 sets the stationary storage battery 3 as the power supply source and the vehicle-mounted storage battery 4 as the power supply destination.

[0038] In step S13, the controller 13 calculates the charge power / discharge power of each storage battery. Since the charge command value is 5 [kW], the load-following power command value of the stationary storage battery 3 is set to 5 [kW]. In the following description, the calculation result (power command value) obtained here will be referred to as "charge setting information."

[0039] In step S14, the controller 13 executes charge / discharge control of the stationary storage battery 3 and the vehicle-mounted storage battery 4 based on the charge setting information. In this example, the DC / DC converter 31 is set to a discharge mode and controlled so that the discharge power of the stationary storage battery 3 becomes 5 [kW]. Also, the DC / DC converter 41 is set to a charge mode and controlled so that the charge power of the vehicle-mounted storage battery 4 becomes 5 [kW].

[0040] FIG. 4 shows the flow of power in the power management system 1 during the above-described default setting operation.

[0041] Returning to Figure 2, when the controller 13 acquires the user setting information via the remote controller 6 or the wireless communication unit 7, it controls the charging and discharging of the stationary storage battery 3 and the vehicle storage battery 4 based on the user setting information, giving priority to the charging and discharging setting information.

[0042] Specifically, first, in step S21, user setting information is acquired. In this example, it is assumed that the user will not use the vehicle the next day, and therefore the user setting information is set so that charging of the stationary storage battery 3 is given top priority during the nighttime hours. Then, the controller 13 acquires the user setting information.

[0043] In step S22, the controller 13 sets the power supply source and the power supply destination based on the acquired user setting information. Here, since the controller 13 has received a command to prioritize charging the stationary storage battery 3, the controller 13 sets the in-vehicle storage battery 4 as the power supply source and the stationary storage battery 3 as the power supply destination.

[0044] In step S23, the controller 13 calculates the charge power / discharge power of each storage battery. Specifically, since the charge command value is 5 [kW], the controller sets the load-following power command value of the in-vehicle storage battery 4 to 5 [kW].

[0045] In step S24, the controller 13 executes charge / discharge control of the stationary storage battery 3 and the vehicle-mounted storage battery 4 based on the user setting information. In this example, the DC / DC converter 41 is set to a discharge mode and controlled so that the discharge power of the vehicle-mounted storage battery 4 becomes 5 [kW]. The DC / DC converter 31 is also set to a charge mode and controlled so that the charge power of the stationary storage battery 3 becomes 5 [kW]. Such an operation based on the user setting information is referred to as a "user-set operation."

[0046] Fig. 5 shows the flow of power in the power management system 1 during the above-mentioned user setting operation. As shown in Fig. 4 and Fig. 5, in this example, the user setting information causes the charging and discharging settings to differ from the default settings.

[0047] As described above, by operating in accordance with the present operation example 1, it is possible to set the power supply and receipt settings as intended by the user, which are different from the default settings.

[0048] (Example 2) In this operation example 2, the operation of the power management system 1 during nighttime hours will be described. As in operation example 1, it is assumed that the default setting is to give top priority to charging the vehicle storage battery 4 during nighttime hours. Furthermore, during this operation, the power generation amount of the solar cell panel 2 is 0 [W], the power consumption of the domestic load is 2 [kW], and the charge command value to the vehicle storage battery 4 is 5.5 [kW]. Note that the following description will focus on the differences from operation example 1.

[0049] Step S10 (S11-S14) is the same as in the above-mentioned "Operation Example 1," and therefore a description thereof will be omitted here.

[0050] User setting information is acquired in step S21 of Fig. 2. In this example, it is assumed that the user wants to reduce the amount of electricity purchased as much as possible, and has set user setting information that gives top priority to power supply to household loads during the nighttime hours.

[0051] In step S22, the controller 13 sets the power supply source and the power supply destination based on the acquired user setting information. Here, since a command to prioritize power supply to the domestic load 5 has been received, the domestic load 5 is set as the power supply destination. As the power supply source, either the stationary storage battery 3 or the vehicle storage battery 4 is set. Here, it is assumed that the stationary storage battery 3 is set as the power supply source. Note that the vehicle storage battery 4 may also be set as the power supply source.

[0052] In step S23, the controller 13 calculates the charge power / discharge power of each storage battery. Since the charge command value is 5.5 [kW], the load-following power command value for the stationary storage battery 3 is set to 5.5 [kW]. Since the power generated by the solar panel 2 is 0 [W] and power supply to the domestic load 5 has priority, the controller 13 calculates 5.5 [kW] - 2 [kW] and derives 3.5 [kW] as the power command value for the vehicle storage battery 4.

[0053] In step S24, the controller 13 executes charge / discharge control of the stationary storage battery 3 and the vehicle-mounted storage battery 4 as a user-set operation based on the user-set information. In this example, the DC / DC converter 31 is set to a discharge mode and controlled so that the discharge power of the stationary storage battery 3 becomes 5.5 [kW]. Also, the DC / DC converter 41 is set to a charge mode and controlled so that the charge power of the vehicle-mounted storage battery 4 becomes 3.5 [kW].

[0054] FIG. 6 shows the flow of power in the power management system 1 after the user has performed the setting operation in the second operation example.

[0055] As described above, by operating in accordance with the present operation example 2, it is possible to set a user-intended setting, different from the default setting, for the power supply among the three parties of the stationary storage battery 3, the vehicle storage battery 4, and the domestic load 5 during autonomous operation. Furthermore, by providing a mode that prioritizes charging the domestic load 5, it is possible to reduce the need to purchase power.

[0056] (Example 3) In this operation example 3, the operation of the power management system 1 during daytime hours will be described. Here, it is assumed that the default settings are set so that during daytime hours, top priority is given to charging the onboard storage battery 4 and top priority is given to using the power generated by the solar panel 2 as the power supply source. Furthermore, during this operation, the power generation amount of the solar panel 2 is 2 [kW], the power consumption of the household load is 3 [kW], and the charge command value is 5.5 [kW].

[0057] First, in the power management system 1, a default setting operation is executed (step S10 in FIG. 2).

[0058] In step S11 of FIG. 3, the controller 13 receives an instruction from a higher-level interface (not shown) to operate the stationary storage battery 3 in load following mode and the vehicle-mounted storage battery 4 in forced charging mode, giving top priority to charging the vehicle-mounted storage battery 4.

[0059] In step S12, the controller 13 sets the power supply source and the power supply destination. Since the highest priority is given to the power generated by the solar cell panel 2, the solar cell panel 2 is set as the power supply source. Furthermore, since a command to give priority to charging the vehicle-mounted storage battery 4 has been received, the stationary storage battery 3 is set as the power supply source, and the vehicle-mounted storage battery 4 is set as the power supply destination.

[0060] In step S13, the controller 13 calculates the charge power / discharge power of each storage battery. Since the charge command value is 5.5 [kW], the power generated by the solar panel 2 is 2 [kW], and the power consumption of the domestic load 5 is 3 [kW], the load following power command value of the stationary storage battery 3 is set to 5.5 [kW] as the charge setting information.

[0061] In step S14, the controller 13 executes charge / discharge control of the stationary storage battery 3 and the vehicle-mounted storage battery 4 based on the charge setting information. In this example, the DC / DC converter 31 is set to a discharge mode and controlled so that the discharge power of the stationary storage battery 3 becomes 5.5 [kW]. Also, the DC / DC converter 41 is set to a charge mode and controlled so that the charge power of the vehicle-mounted storage battery 4 becomes 5.5 [kW].

[0062] FIG. 7 shows the flow of power in the power management system 1 during the above-described default setting operation.

[0063] Returning to FIG. 2, when the controller 13 acquires the user setting information via the remote controller 6 or the wireless communication unit 7, the controller 13 controls the charging and discharging of the stationary storage battery 3 and the vehicle storage battery 4 based on the user setting information, prioritizing it over the charging and discharging setting information.

[0064] Specifically, in step S21, user setting information is acquired. In this example, the user will not be using the car for a while, and so the user has set the user setting information to give top priority to charging the stationary storage battery 3 during the daytime. Then, the controller 13 acquires the user setting information.

[0065] In step S22, the controller 13 sets the power supply source and the power supply destination based on the acquired user setting information. Here, since the controller 13 has received a command to prioritize charging of the stationary storage battery 3 while maintaining the setting of the solar cell panel 2 as the power supply source, it sets the vehicle-mounted storage battery 4 as the power supply source and the stationary storage battery 3 as the power supply destination.

[0066] In step S23, the controller 13 calculates the charge power / discharge power of each storage battery. Since the charge command value is 5.5 [kW], the power generated by the solar panel 2 is 2 [kW], and the power consumption of the domestic load 5 is 3 [kW], the load following power command value of the vehicle storage battery 4 is set to 5.5 [kW].

[0067] In step S24, the controller 13 executes charge / discharge control of the stationary storage battery 3 and the vehicle-mounted storage battery 4 based on the user setting information, i.e., performs a user setting operation. In this example, the DC / DC converter 41 is set to a discharge mode and controlled so that the discharge power of the vehicle-mounted storage battery 4 becomes 5.5 [kW]. The DC / DC converter 31 is also set to a charge mode and controlled so that the charge power of the stationary storage battery 3 becomes 5.5 [kW].

[0068] Fig. 8 shows the flow of power in the power management system 1 after the user setting operation of operation example 3. As shown in Fig. 7 and Fig. 8, in this example, the user setting information causes the charge / discharge setting to be different from the default setting.

[0069] As described above, by operating in accordance with this operation example 3, the power supply between the stationary storage battery 3, the vehicle storage battery 4, and the domestic load 5 during autonomous operation can be set to a setting intended by the user that differs from the default setting.

[0070] (Example 4) In this operation example 4, the operation of the power management system 1 during daytime hours will be described. As in operation example 3, the default settings are set so that during daytime hours, top priority is given to charging the on-board storage battery 4, and top priority is given to power generated by the solar panel 2 as the power supply source. Furthermore, during this operation, the power generation amount of the solar panel 2 is 2 [W], the power consumption of the home load is 2 [kW], and the charge command value is 5.5 [kW]. Note that the following description will focus on the differences from operation example 3.

[0071] Step S10 (S11-S14) is the same as in the above-mentioned "Operation Example 1," and therefore a description thereof will be omitted here.

[0072] User setting information is acquired in step S21 of Fig. 2. In this example, the user wants to reduce the amount of electricity purchased as much as possible, so the user setting information is set to give top priority to power supply to in-home loads during the daytime.

[0073] In step S22, the controller 13 sets the power supply source and the power supply destination based on the acquired user setting information. Here, since a command to prioritize power supply to the domestic load 5 has been received, the domestic load 5 is set as the power supply destination. As for the power supply source, in addition to the solar cell panel 2, either the stationary storage battery 3 or the vehicle storage battery 4 is set. Here, it is assumed that the stationary storage battery 3 is set as the power supply source. Note that the vehicle storage battery 4 may also be set as the power supply source.

[0074] In step S23, the controller 13 calculates the charge power / discharge power of each storage battery. Since the charge command value is 5.5 [kW], the load-following power command value for the stationary storage battery 3 is set to 5.5 [kW]. Since the power generated by the solar panel 2 is 1 [kW] and the power supply (2 [kW]) to the domestic load 5 has priority, the controller 13 calculates 5.5 [kW] + 1 [kW] - 2 [kW] and derives 4.5 [kW] as the power command value for the vehicle storage battery 4.

[0075] In step S24, the controller 13 executes charge / discharge control of the stationary storage battery 3 and the vehicle-mounted storage battery 4 based on the user setting information. In this example, as a user setting operation, the DC / DC converter 31 is set to a discharge mode and controlled so that the discharge power of the stationary storage battery 3 becomes 5.5 [kW]. Also, the DC / DC converter 41 is set to a charge mode and controlled so that the charge power of the vehicle-mounted storage battery 4 becomes 4.5 [kW].

[0076] FIG. 9 shows the flow of power in the power management system 1 after the user setting operation of the fourth operation example.

[0077] As described above, by operating in accordance with this operation example 4, it is possible to set a setting intended by the user that differs from the default setting for the power supply among the three parties of the stationary storage battery 3, the in-vehicle storage battery 4, and the domestic load 5 during autonomous operation. Furthermore, by providing a mode that prioritizes charging the domestic load 5, it is possible to reduce the need to purchase power.

[0078] <Other embodiments> As described above, the embodiments have been described as examples of the technology disclosed in this application. However, the technology in this disclosure is not limited to these, and can be applied to embodiments in which appropriate modifications, substitutions, additions, omissions, etc. are made. Furthermore, it is also possible to combine the components described in the above embodiments to create new embodiments.

[0079] In the above embodiment, an example has been described in which the controller 13 is configured to control the charging and discharging of the in-vehicle storage battery 4 and the stationary storage battery 3 based on the user setting information when the user setting information is acquired, but the control method is not limited to the above embodiment.

[0080] For example, in the above-described operation examples 1 to 4, when the user setting information is acquired, the controller 13 may select one of the stationary storage battery 3 and the vehicle storage battery 4 as the power supply source, and select the other storage battery and one of the domestic load 5 as the power supply destination. An example of the operation flow in this case is shown in FIG. 10.

[0081] Step S10 (S11-S14) is the same as the operation examples of the above-described embodiments, and the description thereof will be omitted here.

[0082] In step S21 of Figure 10, when user setting information is acquired, in step S30, the controller 13 selects one of the stationary storage battery and the in-vehicle storage battery as the power supply source based on the user setting information and the power consumption of the domestic load 5.

[0083] Specifically, in the case of the above-described operation example 3, the in-vehicle storage battery 4 is set as the supply source based on the user setting information (step S40). Then, in step S41, either the stationary storage battery 3 or the domestic load 5 is set as the priority supply destination. In operation example 3, the stationary storage battery 3 is set as the priority supply destination based on the user setting information, so power is supplied preferentially to the stationary storage battery 3 (step S44), and any surplus power is supplied to the domestic load 5 (step S45). On the other hand, although not shown, when the domestic load 5 is set as the priority supply destination, power is supplied preferentially to the domestic load 5 (step S42), and any surplus power is supplied to the stationary storage battery 3 (step S43).

[0084] Furthermore, in the case of the above-described operation example 4, the stationary storage battery 3 is set as the supply source based on the user setting information (step S50). In the subsequent step S51, either the vehicle storage battery 4 or the domestic load 5 is set as the priority supply destination. In operation example 4, the domestic load 5 is set as the priority supply destination based on the user setting information, so power is supplied preferentially to the domestic load 5 (step S52), and any surplus power is supplied to the vehicle storage battery 4 (step S53). On the other hand, although not shown, when the vehicle storage battery 4 is set as the priority supply destination, power is supplied preferentially to the vehicle storage battery 4 (step S54), and any surplus power is supplied to the domestic load 5 (step S55).

[0085] In this way, in other embodiments, as in the above-mentioned embodiments, the power supply between the stationary storage battery 3, the vehicle storage battery 4, and the indoor load 5 during autonomous operation can be set to a setting intended by the user that differs from the default setting. [Industrial Applicability]

[0086] According to the present invention, the power supply between the stationary storage battery 3, the vehicle storage battery 4, and the household load 5 during autonomous operation can be set to a setting intended by the user that differs from the default setting, which is extremely useful. [Explanation of symbols]

[0087] 1. Power Management System 2. Solar panels 3 Stationary storage batteries 5. In-house load (load) 6 Remote controller (reception area) 7. Wireless Communication Department (Reception Department) 10 Power Conditioner 12 AC / DC inverter 13 Controller

Claims

1. an on-board storage battery mounted on the vehicle; a stationary storage battery connected to the vehicle-mounted storage battery via a DC bus; Equipped with a power conditioner, The power conditioner comprises: an AC / DC inverter provided between the DC bus and a load connected to a system power supply; a controller that controls charging and discharging of the in-vehicle storage battery and the stationary storage battery based on charge / discharge mode settings of the in-vehicle storage battery and the stationary storage battery and power consumption of the load; a reception unit that receives user setting information indicating a priority of charging and discharging the in-vehicle storage battery and the stationary storage battery set by a user, When the user setting information is acquired via the reception unit, the controller controls charging and discharging of the in-vehicle storage battery and the stationary storage battery based on the user setting information and power consumption of the load. Power management system.

2. 2. The power management system according to claim 1, When a setting input of a load priority mode that prioritizes discharging to the load is received as the user setting information, the controller supplies discharged power from a discharging-side battery, which is one of the in-vehicle storage battery and the stationary storage battery, to the load, and when the supplied power is greater than the power consumed by the load, controls so that the surplus power is charged in the charging-side battery, which is the other of the in-vehicle storage battery and the stationary storage battery. Power management system.

3. 2. The power management system according to claim 1, When a setting input of a charge priority mode that prioritizes charging between storage batteries is received as the user setting information, the controller controls the controller to charge the discharged power from a discharging side storage battery that is one of the in-vehicle storage battery and the stationary storage battery to the charging side storage battery that is the other of the in-vehicle storage battery and the stationary storage battery, and when the discharged power of the discharging side storage battery is greater than the charge power to the charging side storage battery, the surplus power is supplied to the load. Power management system.

4. 3. The power management system according to claim 2, Further comprising a solar panel; the power conditioner further includes a solar cell DC / DC converter that converts an output voltage of the solar cell panel into a predetermined voltage and outputs the voltage to the DC bus; When the load priority mode is set as the user setting information, the controller supplies discharged power from the solar panel and / or the discharge-side storage battery to the load, and when the supplied power is greater than the power consumed by the load, controls the controller to charge the surplus power to the charge-side storage battery. Power management system.

5. an on-board storage battery mounted on the vehicle; a stationary storage battery connected to the vehicle-mounted storage battery via a DC bus; Equipped with a power conditioner, The power conditioner comprises: an AC / DC inverter provided between the DC bus and a load connected to a system power supply; a controller that controls charging and discharging of the in-vehicle storage battery and the stationary storage battery based on charge and discharge setting information derived from charge and discharge mode settings of the in-vehicle storage battery and the stationary storage battery and power consumption in the load; a reception unit that receives user setting information indicating a priority of charging and discharging the in-vehicle storage battery and the stationary storage battery set by a user, When the user setting information is acquired via the reception unit, the controller selects one of the stationary storage battery and the in-vehicle storage battery as a power supply source, and selects the other storage battery or one of the load as a power supply destination, based on the user setting information and charge / discharge setting information derived from power consumption in the load. Power management system.

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