Solar power generation and energy storage systems and power supply devices

Abstract

To provide a power supply device capable of operating in combination with a photovoltaic power generation system and being retrofitted in an inexpensive and simple method.SOLUTION: The power supply device is connected to a photovoltaic power generation storage system that includes at least a photovoltaic power generation device, a power storage device, a power conditioner into which power from each of the photovoltaic power generation device and the power storage device is input. External device power from an external device including an electric vehicle having a secondary battery is input into the power supply device. The power is output to an input side of a DCAC inverter of the power conditioner from the power supply device. The power supply device has an output limiting unit that limits the output power to the power conditioner side.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a solar power generation and energy storage system including at least a solar power generation device, a power conditioner, and an energy storage device, and a power supply device used in the system.

Background Art

[0002] Conventionally, a solar power generation and energy storage system including at least a solar power generation device, an energy storage device, and a power conditioner into which power from the solar power generation device and the energy storage device is input respectively has been used in buildings such as houses and buildings. For example, a so-called hybrid type power conditioner (hybrid power conditioner) is used for this power conditioner. On the other hand, conventionally, a so-called electric vehicle (including a hybrid type) using a secondary battery and an electric motor has been used, and outlets for charging external devices including electric vehicles have been provided in the above buildings. On the other hand, an external device including a secondary battery such as an electric vehicle is useful as an emergency power source during a power outage, and power supply from the secondary battery into the building has become possible.

Summary of the Invention

Problems to be Solved by the Invention

[0003] As described above, external devices containing secondary batteries, such as electric vehicles, are useful as emergency power sources during power outages. However, when using a hybrid energy storage system, including a solar power generation and energy storage hybrid system equipped with a hybrid power conditioner and energy storage device, it is currently not possible to draw power from the secondary batteries of external devices (Figure 1). In other words, in order to use the power of the above-mentioned external devices, it is necessary to replace the aforementioned hybrid energy storage system with a V2H unit 200A, etc., which has a V2H (Vehicle to Home) device 250 as shown in Figure 2, rather than using the above-mentioned hybrid energy storage system. Furthermore, such V2H equipment that supplies power from the secondary batteries of these external devices into the building is extremely expensive. Therefore, in buildings where a (solar power generation) hybrid energy storage system has already been installed, in order to use power from the secondary batteries of electric vehicles, it is necessary to abandon the already installed hybrid energy storage system and purchase new V2H equipment, etc., to obtain power from electric vehicles, resulting in high costs again and the hassle of replacement.

[0004] Therefore, the present invention aims to address the above-mentioned conventional problems by providing a solar power generation and energy storage system that can replace existing systems in an inexpensive and simple manner, and a power supply device that can operate in combination with existing solar power generation and energy storage systems and can be retrofitted in an inexpensive and simple manner. [Means for solving the problem]

[0005] The power supply device of the present invention is, for example, a DC power supply device (such as an AC / DC adapter) that operates in combination with a solar power generation and energy storage hybrid system. It is a DC power supply device that enables the use of a 1500W AC outlet connected to the secondary battery of an external device for full load use from all outlets of a typical household with voltages such as 100V and 200V, in an inexpensive and simple manner. In other words, by adding the power supply device of the present invention, it becomes possible to take power from the external device and use it as an emergency power source in the building during a power outage without changing (continuing to use) the solar power generation and energy storage hybrid system that has already been installed. By retrofitting the power supply device of the present invention, it is possible to utilize the above power inexpensively, without wasting existing equipment, and without interfering with the conventional operation of existing equipment. Note that the solar power generation and energy storage hybrid system may be a residential solar power generation and energy storage hybrid system.

[0006] In this application, the retrofit described above refers to a "safe retrofit" that, for example, does not affect the operation (also called the conventional operation) of the basic configuration (described later) shown in Figures 3, 5-7, etc. (typically done during power outages, etc.), except for the power boost operation (power output) to the basic configuration, or enables the basic configuration to operate as conventionally (the conventional operation described above) in the configuration shown in Figures 1 and 8 when the power supply device of the present invention is not connected (disconnected) (typically done during normal times (non-power outages, etc.)). This retrofit allows the system to operate in combination with existing solar power generation and energy storage systems (also called the safe retrofit effect). The basic configuration is typically the part of the solar power generation and energy storage system shown in Figures 3, 5-7, etc., excluding the power supply device of the present invention, and corresponds to the configuration of an existing solar power generation and energy storage system (conventional system). The safe retrofit described above can typically be achieved with at least the "safe power connection" and / or "safe communication connection" described later.

[0007] As a result of various studies, the inventors have found that the above objective can be achieved by the present invention described below.

[0008] In other words, the solar power generation and energy storage system according to the present invention is A solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner into which power from the solar power generation device and the energy storage device is input, Furthermore, the power supply unit includes an output limiting unit that receives power from external devices, including electric vehicles with secondary batteries, outputs power to the input side of the DC-AC inverter of the power conditioner, and limits the power output to the power conditioner. Furthermore, the power supply device according to the present invention is A power supply device connected to a solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner to which power from the solar power generation device and the energy storage device is input, External power from external devices, including electric vehicles with secondary batteries, is input, and power is output to the input side of the DC-AC inverter of the power conditioner. The power conditioner also has an output limiting unit that limits the power output to the power conditioner. In the above configuration, the potentials may be in the following order of increasing voltage: the output voltage from the solar power generation device, the output voltage of the power supply device, and the voltage required for output by the DC-AC inverter included in the power conditioner (hereinafter also referred to as the voltage relationship).

[0009] The output limiting unit described above has a function (also called a power output limiting function) to limit the power output from the power supply unit to prevent it from affecting the original operation of the basic configuration (the conventional operation described above) when the power supply unit may affect the original operation of the basic configuration. For example, a DC-DC converter and / or diode set to a predetermined voltage can be used. The power output limiting function can be activated by adjusting the setting voltages of DC-DC converters and other components in various locations so that the DC-DC converter is set to a predetermined voltage. Furthermore, if the output voltage of the power supply unit is adjusted in relation to the output voltage of the solar power generation unit to satisfy the above voltage relationship, the operation of the solar power generation unit takes precedence over the output operation of the power supply unit, and the power output limiting function can be activated. Diodes are sometimes perceived as check valves in output devices, but if the output voltage of the solar power generation unit always satisfies the above voltage relationship, the power output limiting function can be activated, so the output limiting unit can be composed of diodes alone. The power output limiting function enables the safe retrofitting described above (safe power connection).

[0010] Therefore, since the power supply unit has the output limiting unit described above, the above-mentioned safe retrofit becomes possible, and the safe retrofit effect is achieved. As a result, the solar power generation and energy storage system according to the present invention can replace existing systems in an inexpensive and simple manner, and the power supply unit according to the present invention can operate in combination with existing solar power generation and energy storage systems (achieving a safe retrofit effect) and can be retrofitted in an inexpensive and simple manner.

[0011] In the communication unit of the power supply device, information communicated between the energy storage device and the power conditioner is input via an isolation circuit, and there is no need to output information to the energy storage device or the power conditioner. This isolated information acquisition and the absence of information output configuration allow the power supply device to obtain the information without affecting communication between the energy storage device and the power conditioner. Therefore, the power supply device can be safely retrofitted (secure connection in terms of communication).

[0012] In the above configuration, information regarding the power outage is communicated between the energy storage device and the power conditioner. In the communication unit of the power supply, information regarding the power outage may be input via the isolation circuit, and the power outage may be detected. This allows the power supply to obtain information regarding the power outage and detect the power outage without affecting communication between the energy storage device and the power conditioner. Therefore, the power supply can be safely retrofitted (safe connection on the communication side), and in addition, the power outage detection line that was conventionally required to detect power outages can be eliminated.

[0013] The power supply unit may also output a DC power to the power conditioner from the AC input from the external device. This allows for easy extraction of AC power from an external device, such as an outlet used for household appliances inside the electric vehicle, and outputting it as DC to the power conditioner, thus enabling the use of power from the vehicle's secondary battery, similar to V2H equipment.

[0014] The power output of the power supply unit to the power conditioner may be input to a power line directly connected to the input terminal on the energy storage device side of the DC-AC inverter included in the power conditioner and to the output terminal on the power conditioner side of the energy storage device. Alternatively, the power output of the power supply unit to the power conditioner may be input to a power line directly connected to the input terminal on the battery side of the DC-DC converter included in the energy storage device. These configurations make it easy to achieve the above-mentioned safe retrofit effect.

[0015] If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device may be charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". In this way, the charging and discharging of the energy storage device does not affect the conventional operation of the basic configuration described above, and the above-mentioned safe retrofit effect can be achieved.

[0016] If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device may be suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. In this way, by suppressing the power output from the external device via the power supply, the above-mentioned safe add-on effect can be achieved without affecting the conventional operation of the basic configuration described above.

[0017] If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device may be charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply) - (the power consumption of all electrical equipment receiving power from the power conditioner)". By charging the energy storage device in this way, the above-mentioned safe add-on effect can be achieved without affecting the conventional operation of the basic configuration described above.

[0018] The solar power generation and energy storage system according to the present invention is A solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner into which power from the solar power generation device and the energy storage device is input, Furthermore, the power supply unit includes a communication unit that receives power from external devices, including electric vehicles with secondary batteries, outputs power to the input side of the DC-AC inverter of the power conditioner, and does not output information to the energy storage device or the power conditioner. The power supply device according to the present invention is A power supply device connected to a solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner to which power from the solar power generation device and the energy storage device is input, The device has a communication unit that receives power from external devices, including electric vehicles with secondary batteries, outputs power to the input side of the DC-AC inverter of the power conditioner, and does not output information to the energy storage device or the power conditioner. The power supply unit's communication section is configured not to output the above-mentioned information, so the power supply unit does not affect communication between the energy storage device and the power conditioner. Therefore, the power supply unit can be safely retrofitted (safe connection in terms of communication).

[0019] The solar power generation and energy storage system according to the present invention is A photovoltaic power generation storage system comprising at least a photovoltaic power generation device, a power storage device, and a power conditioner into which power from the photovoltaic power generation device and the power storage device is input respectively, Further, external device power from an external device including an electric vehicle having a secondary battery is input, power is output to the input side of the DC-AC inverter of the power conditioner, and a communication unit including only a receiving unit that only performs reception in information communication with the power storage device and the power conditioner is provided. The power supply device according to the present invention Is a power supply device connected to a photovoltaic power generation storage system comprising at least a photovoltaic power generation device, a power storage device, and a power conditioner into which power from the photovoltaic power generation device and the power storage device is input respectively, External device power from an external device including an electric vehicle having a secondary battery is input, power is output to the input side of the DC-AC inverter of the power conditioner, and it has a communication unit including only a receiving unit that only performs reception in information communication with the power storage device and the power conditioner.​​​​​​​​​​​​​​​​​​​This is another diagram showing an example of a conventional configuration. [Figure 3] This figure shows a power supply device according to one embodiment of the present invention. [Figure 4] This figure shows the output voltage of the power supply unit mentioned above. [Figure 5] This figure shows an example of a configuration using the power supply unit described above. [Figure 6] Another diagram showing an example of a configuration using the above power supply unit. [Figure 7] Another diagram showing an example of a configuration using the above power supply unit. [Figure 8] Another diagram showing an example of a configuration using the above power supply unit. [Figure 9] This diagram illustrates power outage detection using the power supply device described above. [Figure 10] Another diagram showing an example of a configuration using the above power supply unit. [Modes for carrying out the invention]

[0022] Embodiments of the present invention will be described below with reference to the drawings. In each figure, the same reference numerals indicate the same or corresponding parts, and unless otherwise specified, their descriptions will be omitted as appropriate.

[0023] Figure 3 shows an example of a power supply unit 100 of a solar power generation and energy storage hybrid system (hereinafter also simply referred to as a hybrid system) 1, which is a type of solar power generation and energy storage system according to one embodiment of the present invention. Unlike Figure 1, Figure 3 shows the operation of a self-sustaining system, in which a solar power generation device 300 installed on the roof of a building BLD such as a house or office building is connected to a power conditioner (a hybrid power conditioner in this embodiment) 210 in a power conditioner unit 200. An energy storage device 230 in the power conditioner unit 200 is also connected to the power conditioner 210. A plug CT, which is connected to an output outlet (1500W, etc.) for power supply in an external device EVHV, including household generators such as gas generators and electric vehicles with built-in secondary batteries SC, is provided on the wall of the building BLD, such as a parking lot, and the plug CT is also connected to the power conditioner 210, specifically to the input side (input terminal 213a) of the DCAC inverter 213 of the power conditioner 210, as will be described later. For example, these output outlets are used to power household appliances inside a car. The power supply unit 100 can supply AC power to the electrical equipment 600 from outlets or other sources provided inside the electric vehicle.

[0024] Broadly speaking, the power supply unit 100 of this embodiment is interposed between the plug CT and the power conditioner 210, receiving AC power from external devices and outputting DC power to the power conditioner. The power conditioner 210 is connected to a power switching box 400 inside the building's BLD. The power switching box 400 has the function of switching between power from the power conditioner unit 200 and (commercial) power from the grid side PN via a power meter 700 (Figure 1), which is not shown in Figure 3 for the purpose of explaining the operation of a self-sustaining system. Power is then supplied to various electrical devices 600 such as home appliances inside the building's BLD (such as inside a home or building) via the distribution board 500 shown in Figure 3.

[0025] In this embodiment, the power supply unit 100 is "added" to the hybrid system 1 between the plug CT and the power conditioner 210. This "added" configuration ensures that, when the power supply unit 100 is operating, it does not affect the conventional operation of the basic configuration except for the power output from the power supply unit 100. Furthermore, when the power supply unit 100 is not operating or is disconnected, the basic configuration can continue to operate conventionally, thus providing a safe and effective add-on.

[0026] For example, the power supply unit 100 can supply the AC 100V output of the external device EVHV to all electrical equipment 600 during a power outage when power is not supplied to the electrical equipment 600 from the grid side PN. Power from the power supply unit 100 can be supplied as DC power to the power line at the point where the power from the solar power generation device 300 and the power from the energy storage device of the hybrid system 1 merge. In other words, without changing the basic configuration of the solar power generation and energy storage hybrid system described above, the AC power from the external device EVHV can be taken into the building BLD and used as an emergency power source during a power outage. Therefore, by adding the power supply unit 100 of this embodiment, existing equipment can be used inexpensively without wasting it. Note that, under conditions in accordance with Article 199-2 of the Ministry of Economy, Trade and Industry's "Interpretation of Technical Standards for Electrical Equipment," the external device power of the external device EVHV cannot be output to the hybrid system 1 under normal conditions because the hybrid system 1 is operating in grid-connected mode, and can only be output in the event of a power outage (such as when it operates independently as shown in Figure 3).

[0027] Here, the conventional operation of the photovoltaic power storage (hybrid) system with the above basic configuration will be described with reference to FIG. 1. This corresponds to the self-sustaining operation in FIG. 1 and the operation of the above basic configuration in FIG. 3. The conventional photovoltaic power storage hybrid system shown in FIG. 1 can sell the power from the photovoltaic power generation device 300 to the grid side PN via the power supply switching box 400. In the self-sustaining operation of the conventional photovoltaic power storage hybrid system, power is not supplied from the grid side PN, and the power consumption of all electrical devices 600 is covered by the power Ppv from the photovoltaic power generation device 300. If the power consumption Pload of all electrical devices 600 > the power Ppv from the photovoltaic power generation device 300, power Pbat such that Pload - Ppv = Pbat is discharged from the power storage device 230. Also, when Pload < Ppv, power Pbat such that Pbat = Ppv - Polad is charged to the power storage device 230.

[0028] Now, in the case of FIG. 3, if the output voltage Vev of the power supply device 100 of the present embodiment is higher than the output voltage Vpv via the DCDC converter 211 (FIG. 5) from the photovoltaic power generation device 300, output voltage feedback is applied to Vpv, and the power output from the photovoltaic power generation device 300 is suppressed. Thus, the power supply device 100 of the present embodiment affects the power output operation from the photovoltaic power generation device 300 and affects the operation of the above basic configuration. Also, if Vev is lower than the voltage Vinv required for the output of the DCAC inverter 213 of the power conditioner 210, power supply from the storage battery is prioritized, and the output from the power supply device 100 of the present embodiment cannot be utilized. In this case, as shown in FIG. 7 described later, the output voltage Vev of the power supply device 100 of the present embodiment is suppressed and can become zero. Therefore, as shown in FIG. 4, it is necessary to satisfy the relationship: the output voltage Vpv from the photovoltaic power generation device 300 via the DCDC converter 211 > the output voltage Vev of the power supply device 100 of the present embodiment > the voltage Vinv required for the output of the DCAC inverter 213. With this relationship, combined with the configuration described later, safe retrofitting (safe electrical connection) can be realized.

[0029] As shown in Figure 5, the power conditioner 210 of this embodiment includes a plurality of DC-DC converters 211 connected one-to-one with the photovoltaic power generation device 300, and a DC-AC inverter 213. The outputs of the plurality of DC-DC converters 211, the output from the external device EVHV via the power supply unit 100 of this embodiment, and the output terminal of the energy storage device 230 (specifically, the DC-DC converter 231) described later are input to the input terminal of the DC-AC inverter 213. The output of the DC-AC inverter 213 is input to the power switching box 400 and output to the electrical equipment 600. The energy storage device 230 includes a (bidirectional) DC-DC converter 231 and a battery 233 connected to its input terminal. The external device EVHV has the above-mentioned secondary battery SC and DC-AC converter DAC connected in series.

[0030] The power supply unit 100 of this embodiment includes an AC / DC converter ADC and an output limiting unit CC connected in series. The output limiting unit CC limits the power output to the power conditioner 210 by the power output limiting function described above, and may include, for example, a DC / DC converter (not shown) and / or a diode (not shown) set to a predetermined voltage that does not have the above-mentioned effects. In the case of a DC / DC converter, by adjusting the setting voltage of the DC / DC converters etc. in each location so that it is set to a predetermined voltage, an effect that does not affect other things is achieved. For example, if the output voltage of the power supply unit is adjusted in relation to the output voltage of the solar power generation device so that the relationship in Figure 4 is satisfied, the above-mentioned safe after-market effect is achieved. In the case of a diode, if the output voltage of the solar power generation device is always in a state that satisfies the relationship in Figure 4, the above-mentioned safe after-market effect can be achieved. Therefore, the output limiting unit may consist of only a diode. The AC / DC converter ADC of the power supply unit 100 and the DC / AC converter DAC of the external device EVHV are connected by the plug CT shown in Figure 3, and AC power is exchanged.

[0031] The (DC) power output of the power supply unit 100 to the power conditioner 210 is input to a power line PWL1 that is directly connected to the input terminal 213a on the energy storage device 230 side of the DC-AC inverter 213 included in the power conditioner 210 in Figure 5, and to the output terminal 231a on the power conditioner 210 side of the DC-DC converter 231 in the energy storage device 230. In this embodiment, the power output of the power supply unit 100 to the power conditioner 210 is directly connected to the output terminal 231a on the power conditioner 210 side of the DC-DC converter 231. Furthermore, the output terminal 231a has output terminals 231a2 to 231aN that allow other energy storage devices 230 to be connected in parallel, in case multiple energy storage devices 230 are installed (power line PWL1 is connected to output terminal 231a1), and the power output of the power supply unit 100 to the power conditioner 210 is connected to output terminal 231a2, for example, as if it were another energy storage device 230 (or pretending to be another energy storage device 230). Furthermore, the power supply unit 100 does not affect the power conditioner 210 or the energy storage devices 230 except for outputting power to the power conditioner 210, thereby realizing the above-mentioned safe retrofit (safe power connection).

[0032] In this embodiment, the power supply unit 100 can reliably detect and operate in the event of a power outage through the configuration described later. In the conventional solar power generation and storage (hybrid) system described above (Figure 1), the power conditioner 210 is equipped with a power outage detection function that observes the AC voltage between the power meter 700 and the power conditioner 210, and between the power meter 700 and the power switching box 400. However, in order to provide such a power outage detection function in the power supply unit 100 of this embodiment, it is conceivable that a power outage detection line that detects the DC power between the power supply unit 100 and the power switching box 400 of this embodiment would be necessary, and it is conceivable that a configuration connecting from the power conditioner 210 or the like would be applied. However, if the connection of this power outage detection line is forgotten, the power supply unit 100 of this embodiment would not be able to distinguish whether the connection was forgotten or whether a power outage occurred, and it is possible that a power outage would be mistakenly detected as a forgotten connection. However, in the power supply unit 100 of this embodiment, this power outage detection line is unnecessary. As shown in Figure 9, by monitoring the communication line COM between the control circuit PU in the power conditioner 210 to which each DC-DC converter 211 is connected and the DC-DC converter 231 of the energy storage device 230, it is possible to obtain information between the two (such as information regarding power outages) without changing the system configuration of the power conditioner 210, energy storage device 230, etc. For example, power outages can be detected, so there is no room for concern about forgetting to connect the wires. Such monitoring can be done, for example, by intercepting at a predetermined location or by receiving a signal emitted from the control circuit PU toward the output terminal of the power conditioner 210 at an open terminal of the output terminal. Here, interception means obtaining the information in a way that does not affect the power conditioner 210 or energy storage device 230, etc., without mutual communication or signal transmission, or in a way that is not known to anyone other than those generally known. The monitoring location may also be between the control circuit PU and the DC-AC inverter 213, etc.

[0033] The information in this embodiment includes, for example, information that can detect a power outage on the grid side (information related to power outages) in part of the communication message between the two parties, and may include grid voltage information and operating mode information (interconnected operation / standalone operation, etc.). The power supply unit 100 in this embodiment does not have a power outage detection function that directly detects the voltage on the grid side using the power outage detection line, etc., but by interpreting the content of the information contained therein through the communication monitoring described above, it can obtain information related to power outages and operate only when there is a power outage. In other words, additional equipment to the system such as the power supply unit 100 in this embodiment would normally require a power outage detection line similar to the conventional one described above, but in this embodiment, the monitoring function and monitoring configuration described above eliminate the need for a power outage detection line and provide the effect of detecting power outages.

[0034] To perform the above monitoring (interception), the power supply unit 100 has a communication unit 150 and an isolation circuit 110 including a photocoupler, etc. Specifically, the communication unit 150 does not output information to the energy storage device 230 and the power conditioner 210. Alternatively, the communication unit 150 may be configured to include only a receiving unit that only receives information in communication with the energy storage device 230 and the power conditioner 210, and not a transmitting unit for information output (transmission), in which case the communication unit 150 can also be called the receiving unit 150. In addition, the communication unit 150 receives information communicated between the energy storage device 230 and the power conditioner 210 via the isolation circuit 110. More specifically, when the energy storage device 230 and the power conditioner 210 are communicating information regarding the above-mentioned power outage, the communication unit 150 receives this power outage information via the isolation circuit 110 and interprets the communication without using the above-mentioned power outage detection line to detect the power outage. This power outage detection may also be performed by the control unit of the power supply unit 100.

[0035] As a configuration for performing the above monitoring, the communication line for monitoring from the power supply unit 100 is configured as follows. In this embodiment, the communication line COM is connected to the communication terminal 231b of the DC-DC converter 231 of the energy storage device 230. The communication terminal 231b has communication terminals 231b2 to 231bN that allow other energy storage devices 230 to be connected in parallel in case there are multiple energy storage devices 230 (the communication line COM is connected to the communication terminal 231a1). The communication terminal 100a on the power conditioner 210 side of the power supply unit 100 (the input terminal of the isolation circuit 110) is directly connected to the output terminal 231b2, for example, as if it were another energy storage device 230 (or pretending to be another energy storage device 230). The power supply unit 100 does not affect the power conditioner 210 or the energy storage device 230 except for monitoring communications such as interception from the communication line COM.

[0036] Through the safe power and communication connections described above, the power supply unit 100 of this embodiment behaves like other solar cell devices 300 or energy storage devices 230 during a power outage, providing a kind of electrical assistance to the electrical equipment 600 inside the building. During normal operation, it does not affect the conventional operation of the basic configuration, and the basic configuration can continue to operate as usual, thus achieving the safe add-on effect described above.

[0037] The specific operation of the hybrid system 1 of the present embodiment will be described. For example, when "the power consumption Pload of all electrical devices 600 in the building BLD > the power Ppv from the solar power generation device 300 + the power Pev from the external device EVHV via the power supply device 100 of the present embodiment", the power Pbat such that Pload - (Ppv + Pev) = Pbat is discharged from the power storage device 230 (Fig. 5). Due to this discharge from the power storage device 230, for example, even if the maximum output of Pev from the external device EVHV is, for example, 1500 W or the like, and as will be described later, the power Pev is charged in the power storage device 230, it means that power exceeding the maximum output (for example, 5500 W) can be output to the electrical device 600 in the form of Pbat. Further, when Pload < Ppv + Pev, as shown in Fig. 6, Pbat such that Pbat = Ppv + Pev - Pload is charged into the power storage device 230. That is, when the power consumption of all electrical devices 600 is less than the sum of the power from the solar power generation device 300 and the power from the external device EVHV, the surplus power can be charged into the power storage device 230. In this case, the voltage Vinv required for the output of the DCAC inverter 213 tends to increase. When Pload < Ppv, Pbat is charged such that Pbat = Ppv + Pev - Pload. At this time, the surplus of Ppv and Pev are charged into the power storage device 230 as Pbat. In the present embodiment, the power Ppv of the solar power generation device 300 connected to the hybrid system 1 as described above and the power Pev from the external device EVHV via the power supply device 100 of the present embodiment are charged into the power storage device 230, and the power of the power storage device 230 can be supplied with power from the power conditioner unit 200. Although there is a power boosting operation from the power supply device 100, this is within the range of the conventional operation of the conventional solar power generation and power storage hybrid system, and except for this power boosting operation from the power supply device 100, it does not affect the conventional operation of the above basic configuration and exhibits the above-described safe retrofitting effect.

[0038] Also, when Ppv < Pload + Pbat < Ppv + Pev, the discharge of power Pev from the external device EVHV via the power supply device 100 of the present embodiment is first suppressed so that Ppv + Pev = Pload + Pbat. This is because, in the present embodiment, the output voltage Vpv from the solar power generation device 300 via the DCDC converter 211 is set higher than the output voltage Vev of the power supply device 100, and the power output from the solar power generation device 300 operates preferentially over the power output of the power supply device 100. Further, when Pload + Pbat < Ppv, when the voltage Vbat of the storage battery 233 reaches the maximum value and Vinv and Vev become substantially equal, as shown in FIG. 7, Ppv is suppressed so that Ppv = Pload + Pbat, and due to the influence of setting the output voltage Vpv from the solar power generation device 300 via the DCDC converter 211 higher than the output voltage Vev of the power supply device 100, the output of Pev is suppressed to almost zero. Thus, with respect to the conventional operation of the above basic configuration, without giving an impact except for the power assist operation from the power supply device 100, the above-described safe retrofit effect is achieved. [[ID=z]]

[0039] As shown in FIG. 8, when the plug CT is not connected to the external device EVHV, when it is not a power outage, or when the power Pev from the external device EVHV is insufficient, etc., even if the power supply device 100 of the present embodiment is disconnected or the input of the power Pev via the power supply device 100 is stopped, the power Pbat once charged in the power storage device 230 can be output via the DCDC converter 231 and the power conditioner 210. With respect to the conventional operation of the above basic configuration, without giving an impact except for the power assist operation from the power supply device 100, the above-described safe retrofit effect is achieved.

[0040] The present invention is not limited to the above embodiments, and various additions, changes, or deletions are possible without departing from the gist of the present invention. Therefore, such things are also included in the scope of the present invention.

[0041] It should be noted that in the above translation, the original "z" in the "[[ID=z]]" should be a misprint. It should be "" as in the original text. I translated it according to the correct understanding.For example, as shown in Figure 10, the power from the power supply unit 100 of the above embodiment can be supplied between the DC-DC converter 231 and the battery 233 without going through the power conditioner 210, in a configuration different from the above embodiment, and it is also possible to supply power directly to the energy storage device 233. Specifically, for example, the (DC) power output of the power supply unit 100 to the power conditioner 210 side is supplied by the DC-DC converter 231 included in the energy storage device 230 in Figure 10. The power is input to the power line PWL2, which is directly connected to the input terminal 231c on the battery side. In this modified configuration, the power output of the power supply unit 100 to the power conditioner 210 side is directly connected to the output terminal 231c on the power conditioner 210 side of the energy storage device 230. The output terminal 231c has output terminals 231c2 to 231cN that allow other batteries 233 to be connected in parallel in case multiple batteries 233 are provided (the power line PWL2 is connected to output terminal 231c1), and the power output of the power supply unit 100 to the power conditioner 210 side is connected to output terminal 231c2, for example, as if it were another battery 233 (or pretending to be another battery 233). The power supply unit 100 does not affect the power conditioner 210 or the energy storage device 230 except for outputting power to the power conditioner 210 side, and thus can achieve the above safe retrofit effect. Furthermore, the present invention includes the following embodiments. [Aspect 1] A solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner into which power from the solar power generation device and the energy storage device is input, Furthermore, the power supply device includes an output limiting unit that limits the power output to the power conditioner, and receives power from external devices, including electric vehicles with secondary batteries, outputs power to the input side of the DC-AC inverter of the power conditioner, and limits the power output to the power conditioner. Solar power generation and energy storage system. [Aspect 2] A solar power generation and energy storage system according to Embodiment 1, At least the voltages are in the following order of increasing potential: the output voltage from the solar power generation device, the output voltage of the power supply device, and the voltage required for output by the DC-AC inverter included in the power conditioner. Solar power generation and energy storage system. [Aspect 3] A solar power generation and energy storage system according to embodiment 1 or 2, In the communication unit of the power supply device, information to be communicated between the energy storage device and the power conditioner is input via an isolation circuit, and no information is output to the energy storage device or the power conditioner. Solar power generation and energy storage system. [Aspect 4] A solar power generation and energy storage system according to embodiment 3, Information regarding the power outage is communicated between the aforementioned energy storage device and the aforementioned power conditioner. In the communication unit of the power supply device, information regarding the power outage is input via the isolation circuit, and the power outage is detected. Solar power generation and energy storage system. [Aspect 5] A solar power generation and energy storage system according to embodiment 1 or 2, The power supply unit outputs a DC signal to the power conditioner from the AC input from the external device. Solar power generation and energy storage system. [Aspect 6] A solar power generation and energy storage system according to embodiment 3, The power supply unit outputs a DC signal to the power conditioner from the AC input from the external device. Solar power generation and energy storage system. [Aspect 7] A solar power generation and energy storage system according to Embodiment 4, The power supply unit outputs a DC signal to the power conditioner from the AC input from the external device. Solar power generation and energy storage system. [Aspect 8] A solar power generation and energy storage system according to embodiment 1 or 2, The power output of the power supply unit to the power conditioner is input to a power line directly connected to the input terminal on the energy storage device side of the DC-AC inverter included in the power conditioner and the output terminal on the power conditioner side of the energy storage device. Solar power generation and energy storage system. [Aspect 9] A solar power generation and energy storage system according to embodiment 3, The power output of the power supply unit to the power conditioner is input to a power line directly connected to the input terminal on the energy storage device side of the DC-AC inverter included in the power conditioner and the output terminal on the power conditioner side of the energy storage device. Solar power generation and energy storage system. [Aspect 10] A solar power generation and energy storage system according to Embodiment 4, The power output of the power supply unit to the power conditioner is input to a power line directly connected to the input terminal on the energy storage device side of the DC-AC inverter included in the power conditioner and the output terminal on the power conditioner side of the energy storage device. Solar power generation and energy storage system. [Aspect 11] A solar power generation and energy storage system according to Embodiment 5, The power output of the power supply unit to the power conditioner is input to a power line directly connected to the input terminal on the energy storage device side of the DC-AC inverter included in the power conditioner and the output terminal on the power conditioner side of the energy storage device. Solar power generation and energy storage system. [Aspect 12] A solar power generation and energy storage system according to embodiment 6, The power output of the power supply unit to the power conditioner is input to a power line directly connected to the input terminal on the energy storage device side of the DC-AC inverter included in the power conditioner and the output terminal on the power conditioner side of the energy storage device. Solar power generation and energy storage system. [Aspect 13] A solar power generation and energy storage system according to Embodiment 7, The power output of the power supply unit to the power conditioner is input to a power line directly connected to the input terminal on the energy storage device side of the DC-AC inverter included in the power conditioner and the output terminal on the power conditioner side of the energy storage device. Solar power generation and energy storage system. [Aspect 14] A solar power generation and energy storage system according to embodiment 1 or 2, The power output of the power supply unit to the power conditioner side is input to a power line directly connected to the battery-side input terminal of the DC-DC converter included in the energy storage device. Solar power generation and energy storage system. [Aspect 15] A solar power generation and energy storage system according to embodiment 3, The power output of the power supply unit to the power conditioner side is input to a power line directly connected to the battery-side input terminal of the DC-DC converter included in the energy storage device. Solar power generation and energy storage system. [Aspect 16] A solar power generation and energy storage system according to Embodiment 4, The power output of the power supply unit to the power conditioner side is input to a power line directly connected to the battery-side input terminal of the DC-DC converter included in the energy storage device. Solar power generation and energy storage system. [Aspect 17] A solar power generation and energy storage system according to Embodiment 5, The power output of the power supply unit to the power conditioner side is input to a power line directly connected to the battery-side input terminal of the DC-DC converter included in the energy storage device. Solar power generation and energy storage system. [Aspect 18] A solar power generation and energy storage system according to embodiment 6, The power output of the power supply unit to the power conditioner side is input to a power line directly connected to the battery-side input terminal of the DC-DC converter included in the energy storage device. Solar power generation and energy storage system. [Aspect 19] A solar power generation and energy storage system according to Embodiment 7, The power output of the power supply unit to the power conditioner side is input to a power line directly connected to the battery-side input terminal of the DC-DC converter included in the energy storage device. Solar power generation and energy storage system. [Aspect 20] A solar power generation and energy storage system according to embodiment 8, The power output of the power supply unit to the power conditioner side is input to a power line directly connected to the battery-side input terminal of the DC-DC converter included in the energy storage device. Solar power generation and energy storage system. [Aspect 21] A solar power generation and energy storage system according to embodiment 9, The power output of the power supply unit to the power conditioner side is input to a power line directly connected to the battery-side input terminal of the DC-DC converter included in the energy storage device. Solar power generation and energy storage system. [Aspect 22] A solar power generation and energy storage system according to embodiment 10, The power output of the power supply unit to the power conditioner side is input to a power line directly connected to the battery-side input terminal of the DC-DC converter included in the energy storage device. Solar power generation and energy storage system. [Aspect 23] A solar power generation and energy storage system according to embodiment 11, The power output of the power supply unit to the power conditioner side is input to a power line directly connected to the battery-side input terminal of the DC-DC converter included in the energy storage device. Solar power generation and energy storage system. [Aspect 24] A solar power generation and energy storage system according to embodiment 12, The power output of the power supply unit to the power conditioner side is input to a power line directly connected to the battery-side input terminal of the DC-DC converter included in the energy storage device. Solar power generation and energy storage system. [Pattern 25] A solar power generation and energy storage system according to embodiment 13, The power output of the power supply unit to the power conditioner side is input to a power line directly connected to the battery-side input terminal of the DC-DC converter included in the energy storage device. Solar power generation and energy storage system. [Aspect 26] A solar power generation and energy storage system according to embodiment 1 or 2, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 27] A solar power generation and energy storage system according to embodiment 3, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 28] A solar power generation and energy storage system according to Embodiment 4, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 29] A solar power generation and energy storage system according to Embodiment 5, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 30] A solar power generation and energy storage system according to embodiment 6, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 31] A solar power generation and energy storage system according to Embodiment 7, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 32] A solar power generation and energy storage system according to embodiment 8, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 33] A solar power generation and energy storage system according to embodiment 9, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 34] A solar power generation and energy storage system according to embodiment 10, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 35] A solar power generation and energy storage system according to embodiment 11, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 36] A solar power generation and energy storage system according to embodiment 12, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 37] A solar power generation and energy storage system according to embodiment 13, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 38] A solar power generation and energy storage system according to embodiment 14, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 39] A solar power generation and energy storage system according to embodiment 15, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 40] A solar power generation and energy storage system according to embodiment 16, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," The power consumption of all electrical equipment that receives power from the aforementioned power conditioner is equal to the power consumption of the aforementioned solar power If the power of the electrical device is less than the sum of the power from the external device via the power supply, the energy storage device is charged with power equivalent to "(sum of the power of the solar power generation device and the power from the external device via the power supply) - (power consumption of all electrical devices)". Solar power generation and energy storage system. [Aspect 41] A solar power generation and energy storage system as described in Embodiment 17, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 42] A solar power generation and energy storage system according to embodiment 18, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 43] A solar power generation and energy storage system according to embodiment 19, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 44] A solar power generation and energy storage system according to embodiment 20, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 45] A solar power generation and energy storage system according to embodiment 21, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 46] A solar power generation and energy storage system according to embodiment 22, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 47] A solar power generation and energy storage system according to embodiment 23, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 48] A solar power generation and energy storage system according to embodiment 24, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system. [Aspect 49] A solar power generation and energy storage system according to embodiment 25, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the total power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation device and the power from the external equipment via the power supply device, The energy storage device is charged with power equivalent to "(the sum of the power from the solar power generation device and the power from the external device via the power supply device) - (the power consumption of all the electrical equipment)". Solar power generation and energy storage system. [Aspect 50] A solar power generation and energy storage system according to embodiment 1 or 2, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 51] A solar power generation and energy storage system according to embodiment 3, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 52] A solar power generation and energy storage system according to Embodiment 4, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 53] A solar power generation and energy storage system according to Embodiment 5, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 54] A solar power generation and energy storage system according to embodiment 6, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 55] A solar power generation and energy storage system according to Embodiment 7, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 56] A solar power generation and energy storage system according to embodiment 8, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) will be equal. The power output from the external device via the power supply is suppressed. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 57] A solar power generation and energy storage system according to embodiment 9, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 58] A solar power generation and energy storage system according to embodiment 10, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 59] A solar power generation and energy storage system according to embodiment 11, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then the sum of (the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) In the relationship where the two are equal, the power of the solar power generation device is suppressed while the power output from the external device via the power supply is suppressed toward zero. Solar power generation and energy storage system. [Aspect 60] A solar power generation and energy storage system according to embodiment 12, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 61] A solar power generation and energy storage system according to embodiment 13, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 62] A solar power generation and energy storage system according to embodiment 14, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 63] A solar power generation and energy storage system according to embodiment 15, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 64] A solar power generation and energy storage system according to embodiment 16, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 65] A solar power generation and energy storage system as described in Embodiment 17, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 66] A solar power generation and energy storage system according to embodiment 18, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) will be equal. The power output from the external device via the power supply is suppressed. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 67] A solar power generation and energy storage system according to embodiment 19, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Pattern 68] A solar power generation and energy storage system according to embodiment 20, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 69] A solar power generation and energy storage system according to embodiment 21, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then the sum of (the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) In the relationship where the two are equal, the power of the solar power generation device is suppressed while the power output from the external device via the power supply is suppressed toward zero. Solar power generation and energy storage system. [Aspect 70] A solar power generation and energy storage system according to embodiment 22, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 71] A solar power generation and energy storage system according to embodiment 23, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 72] A solar power generation and energy storage system according to embodiment 24, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 73] A solar power generation and energy storage system according to embodiment 25, If (the power of the solar power generation system) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) < (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit), then the output of power from the external equipment via the power supply unit is suppressed so that (the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage system) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system. [Aspect 74] A solar power generation and energy storage system according to embodiment 1 or 2, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 75] A solar power generation and energy storage system according to embodiment 3, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 76] A solar power generation and energy storage system according to Embodiment 4, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 77] A solar power generation and energy storage system according to Embodiment 5, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 78] A solar power generation and energy storage system according to embodiment 6, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 79] A solar power generation and energy storage system according to Embodiment 7, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 80] A solar power generation and energy storage system according to embodiment 8, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 81] A solar power generation and energy storage system according to embodiment 9, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 82] A solar power generation and energy storage system according to embodiment 10, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 83] A solar power generation and energy storage system according to embodiment 11, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 84] A solar power generation and energy storage system according to embodiment 12, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 85] A solar power generation and energy storage system according to embodiment 13, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 86] A solar power generation and energy storage system according to embodiment 14, The power consumption of all electrical equipment that receives power from the aforementioned power conditioner is equal to the power consumption of the aforementioned solar power generation If the power is less than that of the device, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation device and the power from the external device via the power supply device) - (the power consumption of all electrical equipment that receives power from the power conditioner)". Solar power generation and energy storage system. [Aspect 87] A solar power generation and energy storage system according to embodiment 15, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Pattern 88] A solar power generation and energy storage system according to embodiment 16, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 89] A solar power generation and energy storage system as described in Embodiment 17, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 90] A solar power generation and energy storage system according to embodiment 18, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 91] A solar power generation and energy storage system according to embodiment 19, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 92] A solar power generation and energy storage system according to embodiment 20, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 93] A solar power generation and energy storage system according to embodiment 21, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation device, the energy storage device will be configured to "(the power of the solar power generation device and the power supply The device charges power equivalent to "(sum of power from external devices via the device) - (power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 94] A solar power generation and energy storage system according to embodiment 22, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 95] A solar power generation and energy storage system according to embodiment 23, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 96] A solar power generation and energy storage system according to embodiment 24, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 97] A solar power generation and energy storage system according to embodiment 25, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system. [Aspect 98] A solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner into which power from the solar power generation device and the energy storage device is input, Furthermore, the power supply device includes a communication unit that receives power from external devices, including an electric vehicle with a secondary battery, outputs power to the input side of the DC-AC inverter of the power conditioner, and does not output information to the energy storage device and the power conditioner. Solar power generation and energy storage system. [Aspect 99] A solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner into which power from the solar power generation device and the energy storage device is input, Furthermore, the power supply device includes a communication unit that includes only a receiving unit that performs only the receiving of information in communication with the energy storage device and the power conditioner, and to which external device power is input from external devices, including electric vehicles with secondary batteries, and power is output to the input side of the DC-AC inverter of the power conditioner. Solar power generation and energy storage system. [Aspect 100] A power supply device connected to a solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner to which power from the solar power generation device and the energy storage device is input, External power from external devices, including electric vehicles with secondary batteries, is input, and power is output to the input side of the DC-AC inverter of the power conditioner, and the power conditioner has an output limiting unit that limits the power output to the power conditioner. power supply. [Aspect 101] A power supply device connected to a solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner to which power from the solar power generation device and the energy storage device is input, External device power, including that from an electric vehicle with a secondary battery, is input, and power is output to the input side of the DC-AC inverter of the power conditioner, and the device has a communication unit that does not output information to the energy storage device and the power conditioner. power supply. [Aspect 102] A power supply device connected to a solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner to which power from the solar power generation device and the energy storage device is input, External device power, including that from an electric vehicle with a secondary battery, is input, and power is output to the input side of the DC-AC inverter of the power conditioner. The power conditioner also has a communication unit that includes only a receiving unit that performs only the receiving of information in communication with the energy storage device and the power conditioner. power supply. [Explanation of Symbols]

[0042] 1. Solar power generation and energy storage hybrid system (solar power generation and energy storage system) 100 Power supply 210 Hybrid Power Conditioner (Power Conditioner) 230 Energy storage devices 300 Solar power generation equipment 600 Electrical equipment EVHV external equipment

Claims

1. A solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner into which power from the solar power generation device and the energy storage device is input, Furthermore, the power supply device includes an output limiting unit that receives power from external devices, including electric vehicles with secondary batteries, outputs power to the input side of the DC-AC inverter of the power conditioner, and limits the power output to the power conditioner. In the communication unit of the power supply device, information to be communicated between the energy storage device and the power conditioner is input via an isolation circuit, and no information is output to the energy storage device or the power conditioner. Solar power generation and energy storage system.

2. A solar power generation and energy storage system according to claim 1, At least the voltages are in the following order of increasing potential: the output voltage from the solar power generation device, the output voltage of the power supply device, and the voltage required for output by the DC-AC inverter included in the power conditioner. Solar power generation and energy storage system.

3. A solar power generation and energy storage system according to claim 1, Information regarding the power outage is communicated between the aforementioned energy storage device and the aforementioned power conditioner. In the communication unit of the power supply device, information regarding the power outage is input via the isolation circuit, and the power outage is detected. Solar power generation and energy storage system.

4. A solar power generation and energy storage system according to claim 3, The power supply unit outputs a DC signal to the power conditioner from the AC input from the external device. Solar power generation and energy storage system.

5. A solar power generation and energy storage system according to claim 3, The power output of the power supply unit to the power conditioner is input to a power line directly connected to the input terminal on the energy storage device side of the DC-AC inverter included in the power conditioner and the output terminal on the power conditioner side of the energy storage device. Solar power generation and energy storage system.

6. A solar power generation and energy storage system according to claim 4, The power output of the power supply unit to the power conditioner is input to a power line directly connected to the input terminal on the energy storage device side of the DC-AC inverter included in the power conditioner and the output terminal on the power conditioner side of the energy storage device. Solar power generation and energy storage system.

7. A solar power generation and energy storage system according to claim 3, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system.

8. A solar power generation and energy storage system according to claim 4, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system.

9. A solar power generation and energy storage system according to claim 5, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system.

10. A solar power generation and energy storage system according to claim 6, If the power consumption of all electrical equipment receiving power from the power conditioner is greater than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device will discharge power equivalent to "(power consumption of all electrical equipment) - (sum of the power from the solar power generation system and the power from the external equipment via the power supply unit)," If the power consumption of all electrical equipment receiving power from the power conditioner is less than the sum of the power from the solar power generation system and the power from the external equipment via the power supply unit, the energy storage device is charged with power equivalent to "(sum of the power from the solar power generation system and the power from the external equipment via the power supply unit) - (power consumption of all electrical equipment)". Solar power generation and energy storage system.

11. A solar power generation and energy storage system according to claim 3, If (the power of the solar power generation device) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device), then the output of power from the external equipment via the power supply device is suppressed so that (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system.

12. A solar power generation and energy storage system according to claim 4, If (the power of the solar power generation device) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device), then the output of power from the external equipment via the power supply device is suppressed so that (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system.

13. A solar power generation and energy storage system according to claim 5, If (the power of the solar power generation device) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device), then the output of power from the external equipment via the power supply device is suppressed so that (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system.

14. A solar power generation and energy storage system according to claim 6, If (the power of the solar power generation device) < (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device), then the output of power from the external equipment via the power supply device is suppressed so that (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) become equal. Furthermore, if (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) < (the power of the solar power generation device), then in the relationship where (the sum of the power of the solar power generation device and the power from the external equipment via the power supply device) and (the sum of the power consumption of all electrical equipment receiving power from the power conditioner and the power of the energy storage device) are equal, the power of the solar power generation device is suppressed while the output of power from the external equipment via the power supply device is suppressed toward zero. Solar power generation and energy storage system.

15. A solar power generation and energy storage system according to claim 3, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system.

16. A solar power generation and energy storage system according to claim 4, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system.

17. A solar power generation and energy storage system according to claim 5, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system.

18. A solar power generation and energy storage system according to claim 6, If the power consumption of all electrical equipment receiving power from the power conditioner is less than the power of the solar power generation system, the energy storage device is charged with power equivalent to "(the sum of the power of the solar power generation system and the power from the external equipment via the power supply unit) - (the power consumption of all electrical equipment receiving power from the power conditioner)". Solar power generation and energy storage system.

19. A power supply device connected to a solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner to which power from the solar power generation device and the energy storage device is input, External power from external devices, including electric vehicles with secondary batteries, is input, and power is output to the input side of the DC-AC inverter of the power conditioner, and the power conditioner has an output limiting unit that limits the power output to the power conditioner. In the communication unit of the power supply device, information to be communicated between the energy storage device and the power conditioner is input via an isolation circuit, and no information is output to the energy storage device or the power conditioner. power supply.

20. A power supply device connected to a solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner to which power from the solar power generation device and the energy storage device is input, External power is input from external devices, including electric vehicles with secondary batteries, and power is output to the input side of the DC-AC inverter of the power conditioner, and, This device has an output limiting unit that limits the power output to the power conditioner, and a communication unit that receives information communicated between the energy storage device and the power conditioner via an isolation circuit and does not output information to the energy storage device and the power conditioner. power supply.

21. A power supply device connected to a solar power generation and energy storage system comprising at least a solar power generation device, an energy storage device, and a power conditioner to which power from the solar power generation device and the energy storage device is input, External power is input from external devices, including electric vehicles with secondary batteries, and power is output to the input side of the DC-AC inverter of the power conditioner, and, This device has an output limiting unit that limits the power output to the power conditioner, and a communication unit that includes only a receiving unit that receives information only in the communication between the energy storage device and the power conditioner, and receives the information communicated between the energy storage device and the power conditioner via an isolated circuit and does not output information to the energy storage device and the power conditioner. power supply.

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