Portable solar power generation equipment

Abstract

This enables charging of the storage battery from a power source other than a solar panel. [Solution] The portable solar power generation device (1) comprises a housing (2), a solar panel (3) mounted on the housing (2), a storage battery (7) mounted on the housing (2) for storing the power output from the solar panel (3), and a charging / discharging device (5) mounted on the housing (2) for charging the storage battery (7) using the power of an electric vehicle with a power storage function.

Description

[Technical Field]

[0001] The present invention relates to a portable solar power generation device. [Background technology]

[0002] Power supplies in disaster-stricken areas experiencing power outages due to disasters, construction sites and mountainous areas without power grids have relied primarily on generators that use fossil fuels such as diesel engines. These generators produce noise and exhaust gases during operation, which limits the location and time of their use and creates a significant environmental burden. Furthermore, fuel must be continuously secured and replenished.

[0003] As a technology that can solve such problems, for example, Patent Document 1 discloses a device that includes a power storage device, a charge / discharge control device, a box-type structure that houses the power storage device and the charge / discharge control device, and a power generation device (solar cell panel) attached to the box-type structure. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-122817 Summary of the Invention [Problem to be solved by the invention]

[0005] In the above-mentioned device, even if the remaining charge of the power storage device becomes low due to power consumption in situations where the power generation capacity of the power generation device decreases due to cloudy weather or when the power generation device cannot generate power at night, it is not possible to replenish power to the power storage device. Furthermore, if a large-capacity power storage device is installed that can sufficiently store the power generated by the power generation device, the power storage device will become larger, and the device will also become larger. Since the device will be transported and used in the above-mentioned disaster-stricken areas or areas without a power grid, it is desirable to avoid making it larger and make it as small as possible, taking into account road conditions.

[0006] One aspect of the present invention aims to realize charging of a storage battery from a power supply source other than a solar panel. [Means for solving the problem]

[0007] In order to solve the above problems, a portable solar power generation device according to one embodiment of the present invention comprises a housing, a solar power generation panel mounted on the housing, a storage battery mounted on the housing for storing the power output from the solar power generation panel, and a charging device mounted on the housing for charging the storage battery using the power of an electric vehicle having a power storage function. [Effects of the Invention]

[0008] According to one aspect of the present invention, it is possible to charge a storage battery from a power supply source other than a solar panel. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view showing the configuration of a portable solar power generation device according to a first embodiment of the present invention; [Figure 2] FIG. 2 is a front view showing the configuration of the portable solar power generation device. [Figure 3] FIG. 2 is a rear view showing the configuration of the portable solar power generation device. [Figure 4] FIG. 2 is a side view showing the configuration of the portable solar power generation device. [Figure 5] FIG. 2 is a block diagram showing the configuration of an electrical system of the portable solar power generation device. DETAILED DESCRIPTION OF THE INVENTION

[0010] [Embodiment] Hereinafter, one embodiment of the present invention will be described in detail.

[0011] FIG. 1 is a perspective view showing the configuration of a portable solar power generation device 1 according to this embodiment. FIG. 2 is a front view showing the configuration of the portable solar power generation device 1. FIG. 3 is a rear view showing the configuration of the portable solar power generation device 1. FIG. 4 is a side view showing the configuration of the portable solar power generation device 1. In the following description, for convenience, the portable solar power generation device 1 will be simply referred to as the solar power generation device 1.

[0012] The solar power generation device 1 shown in Fig. 1 is a portable device that generates electricity using sunlight. The solar power generation device 1 can be used as a completely independent off-grid power supply device that does not require connection to a power grid.

[0013] 1 to 4, the solar power generation system 1 includes a housing 2, a solar panel 3 (photovoltaic power generation panel), a damper 4, a charge / discharge device 5, a storage box 6, a storage battery 7, an internal charger 8, an external charger 9, and a pair of inverters 10. The solar power generation system 1 also includes, as breakers, a main breaker 11, an equipment breaker 12, a 200V breaker 13, and a 100V breaker 14. The solar power generation system 1 also includes, as input / output units, a 200V outlet 15, a 100V outlet 16, and a connector 17.

[0014] The housing 2 is formed in a container shape so as to house various devices therein, and has a main body 21 and a base 22. The main body 21 has a front face 21a, a pair of side faces 21b (outer faces), a back face 21c (outer face), and a top face 21d. An openable shutter 211 or door (not shown) is provided at the opening of the front face 21a.

[0015] The base 22 is provided at the bottom of the main body 21 and supports the entire solar power generation device 1. The base 22 is provided with insertion ports 22a and 22b into which the forks of a forklift can be inserted. Specifically, the insertion port 22a is provided for inserting the forks from the front and rear sides of the housing 2, and the insertion port 22b is provided for inserting the forks from the side side of the housing 2.

[0016] This allows the solar power generation device 1 to be easily moved using a forklift, and can be easily loaded onto, for example, a truck, etc. This makes it possible to quickly transport the solar power generation device 1 to a disaster-stricken area and deploy it there in the event of a disaster.

[0017] The solar panel 3 is a power generating device that receives sunlight and generates power. The solar panel 3 has a central panel 31 fixed to the top surface 21d of the housing 2, a pair of side panels 32 provided on the pair of side surface portions 21b of the housing 2, respectively, and a back panel 33 provided on the back surface portion 21c of the housing 2.

[0018] The pair of side panels 32 are rotatably attached to the upper part of the pair of side surface portions 21b via support shafts 32a. The rear panel 33 is rotatably attached to the upper part of the rear surface portion 21c via support shafts 33a. The side panels 32 and the rear panel 33 are supported by the side surface portions 21b and the rear surface portion 21c by dampers 4, respectively.

[0019] The damper 4 has a main body portion 41 and hinge portions 42 and 43. The hinge portion 42 connects the upper end of the main body portion 41 to the rear surface of the side panel 32 so that the main body portion 41 can rotate relative to the rear surface of the side panel 32. The hinge portion 43 connects the lower end of the main body portion 41 to the side surface portion 21b so that the main body portion 41 can rotate relative to the side surface portion 21b.

[0020] With this connection structure, the damper 4 supports the side panel 32 and the rear panel 33 so that they can move between a standby position in which they are folded along the side portion 21b and the rear portion 21c, respectively, and an open position in which they are open relative to the side portion 21b and the rear portion 21c.

[0021] With the assistance of the dampers 4, a user can easily move the side panels 32 and the rear panel 33 between the standby position and the open position by simply slightly moving the side panels 32 and the rear panel 33 by hand. This improves the workability when installing and transporting the solar power generation device 1. Furthermore, when transporting or storing the solar power generation device 1, the side panels 32 and the rear panel 33 can be folded into the standby position to make the solar power generation device 1 compact.

[0022] The charging / discharging device 5 is a charging / discharging device compatible with V2X (Vehicle to X (X means everything)), and is disposed on the upper surface 22c of the base part 22 inside the housing 2. The charging / discharging device 5 functions as a charging device for charging the storage battery 7 with electric power stored in an electric vehicle 200 (see FIG. 5 ) such as an EV or PHV that has a power storage function.

[0023] As a result, even when solar power generation is unavailable during the day and the remaining charge of the storage battery 7 is low, power can be supplied from the electric vehicle 200 connected to the charging / discharging device 5 to the storage battery 7, thereby allowing the storage battery 7 to continue supplying power. This allows the electric vehicle 200 to be used as a mobile, large-capacity storage battery, greatly improving the flexibility of energy use. Conversely, the charging / discharging device 5 has the function of charging the electric vehicle 200 from the storage battery 7. Therefore, when the remaining charge of the storage battery 7 is sufficient, power can be supplied to the electric vehicle 200.

[0024] The storage box 6 stores a storage battery 7, an internal charger 8, an external charger 9, and a pair of inverters 10. The pair of inverters 10 are arranged on shelf 6b of the storage box 6, and the internal charger 8 and external charger 9 are arranged on shelf 6c. The storage box 6 holds a main breaker 11, an equipment breaker 12, a 200V breaker 13, and a 100V breaker 14. The storage box 6, like the charging / discharging device 5, is arranged on the upper surface 22c of the base part 22 inside the housing 2.

[0025] The storage battery 7 stores the power output from the solar panel 3, as well as the power from the electric vehicle 200 and the generator 100 described below. The storage battery 7 is, for example, a lithium iron phosphate battery, and is configured as a unit, allowing for expansion.

[0026] The 200V outlet 15 and the 100V outlet 16 are provided, for example, at the bottom of the rear portion 21c of the housing 2, and are outlets for supplying the power stored in the storage battery 7 to external devices. The power supply via the 200V outlet 15 and the 100V outlet 16 can accommodate a variety of power loads, from small electrical devices such as mobile phone chargers to large devices such as construction machinery. This makes it possible to accommodate a wide range of applications, such as power use in evacuation shelters in disaster-stricken areas and construction sites without a power grid.

[0027] The connector 17 is provided, for example, at the bottom of the rear surface portion 21c of the housing 2 in order to connect the generator 100.

[0028] Next, a description will be given of charging and discharging the storage battery 7 in the electrical system of the solar power generation device 1. FIG.

[0029] As shown in FIG. 5, DC power generated by the solar panel 3 is charged into the storage battery 7 via an internal charger 8.

[0030] The generator 100 is an external power supply device such as an inverter generator. AC power supplied from the generator 100 via a connector 17 is converted to DC power by an external charger 9 and charged into the storage battery 7. The charging system using the external charger 9 can be used as a backup when solar power generation is not possible and the electric vehicle 200 is also not available.

[0031] The DC power stored in the storage battery 7 is converted into AC power (for example, single-phase three-wire 200V) by a pair of inverters 10. The AC power from the inverters 10 is supplied to the charging / discharging device 5 via a main breaker 11 and an equipment breaker 12. The AC power is also supplied to a 200V outlet 15 and a 100V outlet 16 via the main breaker 11, a 200V breaker 13, and a 100V breaker 14, respectively.

[0032] The charging / discharging device 5 has an inverter 51 built in, and performs bidirectional power conversion between the DC power of the electric vehicle 200 and the AC power within the device. When charging the storage battery 7 from the electric vehicle 200, the DC power from the electric vehicle 200 is converted into AC power by the inverter 51 and supplied to a pair of inverters 10 via an equipment breaker 12 and a main breaker 11. This AC power is converted into DC power by the pair of inverters 10 and charged into the storage battery 7.

[0033] The portable solar power generation device 1 according to this embodiment is configured and operates as described above, thereby realizing three types of power supply and charging methods. First, during the day, the storage battery 7 is charged with power from the solar panel 3 and power is supplied from the outlets 15 and 16. Second, when solar power generation is unavailable and the remaining charge of the storage battery 7 is low, the storage battery 7 is charged from the electric vehicle 200 via the charging / discharging device 5. Third, when the remaining charge of the storage battery 7 is low and the electric vehicle 200 cannot be used, the storage battery 7 is charged via the external charger 9 using power from the generator 100.

[0034] This enables a stable power supply regardless of weather or time of day. In particular, the solar power generation device 1 makes it easy to use the storage battery 7 as a continuous power supply source by charging it from the electric vehicle 200, so the storage battery 7 can be made smaller without increasing its capacity for continuous use, thereby making it possible to reduce the size of the entire device.

[0035] Furthermore, the solar power generation device 1 enables a rapid supply of power in the event of a disaster. Because the solar power generation device 1 is highly portable, it can be quickly deployed to evacuation shelters and other locations in disaster-stricken areas in the event of a power outage due to a disaster and used as an emergency power source. In particular, by transporting the miniaturized solar power generation device 1 using a small transport vehicle such as a 2-ton truck, it becomes easier to transport the solar power generation device 1 to disaster-stricken areas where road conditions have deteriorated.

[0036] Furthermore, the solar power generation system 1 enables the use of electricity anywhere. Clean electricity can be used anywhere, such as construction sites or mountainous areas where grid connection is not possible. By connecting the solar power generation system 1 to a container house, it is also possible to build an "off-grid house" in a place where there is no power infrastructure.

[0037] The solar power generation system 1 also contributes to the environment. Because it uses renewable energy, such as sunlight, it does not emit carbon dioxide and contributes to carbon neutrality. In addition, because it operates very quietly, it can be used at night or in residential areas.

[0038] Furthermore, the solar power generation system 1 improves the flexibility of energy use. By utilizing the V2X function of the charging / discharging device 5, the electric vehicle 200 can be used as a "mobile storage battery," and the balance between supply and demand of electricity can be flexibly adjusted. Furthermore, the charging / discharging device 5 can also charge the electric vehicle 200.

[0039] [Additional Notes] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Furthermore, embodiments obtained by appropriately combining the technical means disclosed in the embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0040] 1. Portable solar power generation equipment 2. Case 3. Solar panels (photovoltaic panels) 4 Damper 5 Charging / discharging device (charging device) 7. Storage battery 15 200V outlet (outlet) 16 100V outlet (outlet) 21b Side part (outer surface) 21c Back part (outer side) 22a, 22b outlets 200 Electric Vehicles

Claims

1. The housing and a solar panel provided in the housing; a storage battery provided in the housing and configured to store power output from the solar power generation panel; a charging device provided in the housing and configured to charge the storage battery with power from an electric vehicle having a power storage function.

2. 2. The portable solar power generation device according to claim 1, further comprising a damper that movably supports the solar power generation panel provided on the outer surface of the housing between a standby position along the outer surface and an open position that opens relative to the outer surface.

3. The portable solar power generation device according to claim 1 or 2, wherein the housing is provided with an insertion port into which forks of a forklift can be inserted.

4. The portable solar power generation device according to claim 1 or 2, further comprising an outlet provided in the housing for supplying the power stored in the storage battery to an external device.

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