Power supply systems and buildings

Abstract

To mainly reduce an installation area of a charging / discharging stand with respect to the periphery of a parking space so as to enable efficient installation.SOLUTION: A power supply system 11 divides a charging / discharging stand 4 for an electric vehicle 3 into a pod part 13 having a charging / discharging gun 12 and a stand part 14 having no charging / discharging gun 12. The pod part 13 is installed around a parking space 5 in a site 2. The stand part 14 is installed at a position away from the parking space 5 in the site 2. When a building 1 is interposed between the pod part 13 and the stand part 14, wiring 31 for connecting between the pod part 13 and the stand part 14 is installed through an underfloor 32 of the building 1.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an electric power supply system and a building. [Background technology]

[0002] In recent years, the role that electric vehicles play in preserving the global environment has been receiving a great deal of attention. It is expected that the proportion of electric vehicles in the total automobile market will increase in the future. In order to make effective use of electric vehicles, it is important to provide a power supply system for electric vehicles within the building premises (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-171633 Summary of the Invention [Problem to be solved by the invention]

[0004] Electric vehicle power supply systems are primarily comprised of charging stations, which are generally all-in-one. However, because all-in-one charging stations are large, they require a large installation area, making it difficult to efficiently install charging stations around parking spaces on a site.

[0005] Therefore, a main object of the present invention is to contribute to improving the above-mentioned problems. [Means for solving the problem]

[0006] In response to the above problems, the present invention provides: A charging / discharging stand for an electric vehicle is divided into a pod section having a charging / discharging gun and a stand section not having the charging / discharging gun, The pod section is installed around the parking space on the premises, The stand is installed at a position away from the parking space within the site. 、 a building is interposed between the pod section and the stand section; Wiring connecting the pod unit and the stand unit is installed under the floor of the building, A protective pipe is provided to protect the portion of the wiring buried underground, and the end of the protective pipe on the pod section side that faces the building and the end of the protective pipe on the stand section side that faces the building are buried at positions away from the foundation of the building. It features a power supply system. [Effects of the Invention]

[0008] According to the present invention, the above configuration makes it possible to reduce the installation area of ​​the charging / discharging station relative to the periphery of the parking space, thereby enabling efficient installation. By running the wiring connecting the pod unit and the stand unit under the floor of the building, it is possible to connect the pod unit and the stand unit over the shortest distance. Also, by burying the ends of the protective pipes that protect the underground portion of the wiring at separate locations in the foundation of the building, the building can be equipped in advance with the configuration for installing a power supply system, and the power supply system can be easily constructed at any time by connecting the pod unit and the stand unit with wiring through the simple construction of running the wiring through the protective pipe. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a vertical cross-sectional view of a portion of a building site showing a power supply system according to an embodiment of the present invention. [Figure 2] FIG. 2 is a diagram showing a main part of the power supply system of FIG. [Figure 3] 1 is a schematic plan view showing the positional relationship between the pod unit and the stand unit relative to the building, where (a) is when they are located between opposite sides of the building, (b) is when they are located between adjacent sides of the building, and (c) is when they are located between adjacent sides opposite to (b). [Figure 4] This is a modified example of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, this embodiment will be described in detail with reference to the drawings. 1 to 4 are used to explain this embodiment. [Example]

[0011] <Configuration> The configuration of this embodiment will now be described.

[0012] As shown in FIG. 1, a charging / discharging station 4 for an electric vehicle 3 is installed within a site 2 of a building 1 .

[0013] Here, the building 1 may be any type of building, such as a detached house, an apartment building, or a commercial building.

[0014] Site 2 is the land on which Building 1 will be built. Site 2 will have at least one or more parking spaces 5.

[0015] The electric vehicle 3 is a vehicle that uses electricity as an energy source and is driven by a motor. The electric vehicle 3 can include a vehicle that also uses an engine, such as a plug-in hybrid vehicle.

[0016] The charging / discharging stand 4 is a device that has at least the function of charging the electric vehicle 3. The charging / discharging stand 4 also has a discharging function of discharging the electricity stored in the electric vehicle 3 and supplying it to the building 1. One charging / discharging stand 4 may be provided exclusively for each parking space 5, or one charging / discharging stand 4 may be shared by multiple parking spaces 5.

[0017] In addition to the basic configuration described above, this embodiment may also have the following configuration.

[0018] (1) As shown in FIG. 2 (also see FIG. 1), the power supply system 11 of this embodiment divides a charging / discharging stand 4 for an electric vehicle 3 into a pod section 13 having a charging / discharging gun 12 and a stand section 14 not having the charging / discharging gun 12. The pod section 13 is then installed around the parking space 5 within the site 2. In addition, the stand section 14 is installed at a position away from the parking space 5 within the site 2.

[0019] Here, the power supply system 11 is a facility (VtoH system) provided in the building 1 or the like to effectively utilize the electric vehicle 3, and is mainly composed of a charging and discharging stand 4 (VtoH: Vehicle to Home). The power supply system 11 may have a function to connect to a solar power generation facility 15 (FIG. 1) installed in the building 1.

[0020] In FIG. 1 , solar power generation equipment 15 includes solar panels 16 and a power conditioner 17 that converts DC power generated by solar panels 16 into AC power and controls the power. Solar panels 16 are installed on an upper surface 18 (roof portion) of building 1, and power conditioner 17 is installed on a side surface 19 of building 1. Solar panels 16 are electrically connected to power conditioner 17 (wiring section 20a). Solar power generation equipment 15 may be separate and independent from power supply system 11. However, as will be described later, solar power generation equipment 15 is preferably connected to power supply system 11 for cooperation. In this case, power conditioner 17 of solar power generation equipment 15 is electrically connected to power supply system 11 (wiring section 20b).

[0021] The charging / discharging gun 12 is a terminal portion (connecting portion) of the charging / discharging station 4 that is directly connected to the electric vehicle 3. The charging / discharging gun 12 corresponds to a fuel nozzle in a gasoline-powered vehicle.

[0022] The pod unit 13 is a small, separate part of the charging / discharging stand 4 that combines the minimum functions required to charge and discharge the electric vehicle 3. The pod unit 13 requires only about 20% of the installation area of ​​the existing all-in-one charging / discharging stand 4. This allows for a wider range of installation locations around the parking space 5. The pod unit 13 can be installed inconspicuously from the outside, for example, by utilizing dead space behind a gatepost installed at the entrance to the site 2.

[0023] The pod unit 13 has at least the charge / discharge gun 12, a holder 13a that holds the charge / discharge gun 12, a display 13b that displays the charge / discharge status, and an operation unit that operates the charge / discharge stand 4. The operation unit may be integrated by making the display 13b a touch panel or the like. A charge / discharge cable 21 is provided between the charge / discharge gun 12 and the holder 13a, the charge / discharge cable 21 being long enough to allow the charge / discharge gun 12 to reach the electric vehicle 3.

[0024] The charging / discharging cable 21 has an appropriate length, for example, in the range of approximately 2.5 m to 7.5 m. While it is generally considered that the charging / discharging cable 21 is 6.0 m or less, the charging / discharging cable 21 may be shortened to approximately 2.5 m to 3.5 m. For example, the charging / discharging cable 21 can be short when the parking space 5 is for one vehicle, and tends to be long when the parking space 5 is for multiple vehicles. In addition, the charging port differs depending on the electric vehicle 3, and this must also be taken into consideration. The lower part of the pod unit 13 is supported by a support pillar 22 and is installed at a height that is easy to handle (for example, approximately 1.2 m to 1.5 m). The support pillar 22 is fixed to a concrete foundation 23 or the like buried underground on the site 2 via root wrapping.

[0025] The stand unit 14 is the main body of the charging / discharging stand 4, which combines all the main functions except for the pod unit 13. The stand unit 14 is equipped with a power supply unit including a power conditioner unit and a control unit inside. The stand unit 14 also has a wiring connection box 24 on its exterior. The stand unit 14 is larger than the pod unit 13. The lower part of the stand unit 14 is installed and fixed on a concrete foundation 25 provided on the ground or the like of the site 2.

[0026] The parking space 5 is a space for parking the electric vehicle 3 provided within the site 2. The parking space 5 is provided in a part of the site 2 facing a public road, for example.

[0027] The periphery of the parking space 5 is, for example, a position close to the parking space 5 where the charge / discharge gun 12 can reach the charging port of the electric vehicle 3. The pod unit 13 is positioned around the parking space 5 so as not to interfere with tasks such as getting in and out of the electric vehicle 3 and loading and unloading luggage.

[0028] The position away from the parking space 5 is defined as a position farther from the parking space 5 than the pod unit 13. The stand unit 14 is installed at a position within a range where the straight-line distance between the stand unit 14 and the pod unit 13 is approximately 25 m or less. However, if there is sufficient space in the parking space 5, this does not prevent the stand unit 14 from being installed near the parking space 5 or the pod unit 13. The stand unit 14 and the pod unit 13 are connected by wiring 31, which will be described later.

[0029] (2) Depending on the situation, a building 1 may be interposed between the pod section 13 and the stand section 14. In such a case, the wiring 31 connecting the pod section 13 and the stand section 14 may be installed through the underfloor 32 of the building 1.

[0030] Here, the building 1 being interposed between the pod section 13 and the stand section 14 means that if a straight line is drawn between the pod section 13 and the stand section 14, part of the building 1 is on this line, causing the building 1 to interfere with the line. Alternatively, the building 1 is sandwiched between the pod section 13 and the stand section 14.

[0031] For example, when the stand unit 14 is installed facing one side surface 19a of the building 1, the pod unit 13 can be installed facing the side surface 19b opposite the side surface 19a of the building 1 as shown in FIG. 3(a), thereby placing the building 1 between the stand unit 14 and the pod unit 13. Also, as shown in FIG. 3(b), the pod unit 13 can be installed facing the side surface 19c adjacent to the side surface 19a of the building 1, thereby placing the building 1 between the stand unit 14 and the pod unit 13. Similarly, as shown in FIG. 3(c), the pod unit 13 can be installed facing another side surface 19d adjacent to the side surface 19a of the building 1, thereby placing the building 1 between the stand unit 14 and the pod unit 13.

[0032] More specifically, the pod section 13 is installed in a position facing the side surface 19 of the building 1, which is located around the parking space 5 within the site 2. The stand section 14 is installed, for example, in a position facing the side surface 19 at the rear of the building 1. In such a case, the building 1 will interfere with the straight line.

[0033] The wiring 31 is basically for the power supply system 11. The wiring 31 is composed of, for example, a communication line, a power line, and a ground wire. The wiring 31 can be connected to, for example, the wiring section 20b from the power conditioner 17 of the solar power generation facility 15. The length of the wiring 31 is approximately 25 m or less. The linear distance between the stand section 14 and the pod section 13 is determined by the length of the wiring 31.

[0034] The wiring 31 connecting the pod unit 13 and the stand unit 14 is basically buried underground so as not to interfere with daily life and to ensure safety. When buried underground, the wiring 31 is protected by covering its exterior with protective tubes 33 and 34. The protective tubes 33 and 34 are made of, for example, flame-resistant flexible resin tubes such as PF (Plastic Flexible) tubes.

[0035] The entire wiring 31 may be buried underground. In this case, the wiring 31 can be buried underground so as to detour around the outside of the building 1. However, in this embodiment, the wiring 31 is passed under the floor 32 of the building 1.

[0036] The underfloor space 32 of the building 1 is the internal space of the foundation 36, which is below the floor 35 of the lower floor of the building 1. The foundation 36 has a rising portion 36a provided along the periphery of the building 1. The foundation 36 may be a strip footing in which the ground inside the rising portion 36a is exposed. Alternatively, the foundation 36 may be a mat foundation in which the ground inside the rising portion 36a is covered with a slab 36b. In this embodiment, the foundation 36 is a mat foundation. Heat insulation 37 is installed inside the foundation 36. The heat insulation 37 is installed vertically and horizontally along the rising portion 36a and the slab 36b.

[0037] Installing the wiring 31 through the underfloor 32 means placing the middle portion 31a of the wiring 31 of the power supply system 11 under the floor 32. As a result, the main portion (middle portion 31a) of the wiring 31 passes through the underfloor 32, and the end portions 31b, 31c that protrude from the underfloor 32 (foundation 36) are short.

[0038] The end portions 31b, 31c of the wiring 31 that extend out from under the floor 32 (foundation 36) are buried underground as described above. The burial depth is 30 cm or more. The end portions 31b, 31c of the wiring 31 that are buried underground are protected by covering their exteriors with protective tubes 33, 34, respectively. Two protective tubes 33, 34 are used: one (first protective tube 33) that covers the end portion 31b of the wiring 31 on the pod section 13 side, and the other (second protective tube 34) that covers the end portion 31c of the wiring 31 on the stand section 14 side.

[0039] The middle portion 31a of the wiring 31, which is located under the floor 32, may be installed in an exposed state without being covered with the protective pipes 33 and 34. The middle portion 31a may be installed directly on the slab 36b. In this case, the middle portion 31a on the slab 36b is installed at a higher position than the end portions 31b and 31c, which are buried underground. In other words, a difference in elevation occurs between the middle portion 31a and the end portions 31b and 31c.

[0040] The protective pipes 33, 34 that cover the end portions 31b, 31c of the wiring 31 are extended to cover the portion of the wiring 31 that penetrates the foundation 36, and the protective pipes 33, 34 are buried in the foundation 36 with the protective pipes 33, 34 covering the outside.

[0041] The wiring 31 and the protective pipes 33, 34 are buried and fixed inside the foundation 36 so as to slope downward from the inside to the outside of the foundation 36. The protective pipes 33, 34 are buried in the boundary between the slab 36b and the rising portion 36a of the foundation 36 or in the vicinity thereof.

[0042] The protective pipes 33, 34 are extended to the inside of the foundation 36. The protective pipes 33, 34 penetrate around the corners of the heat insulating material 37 installed along the slab 36b and the rising portion 36a inside the foundation 36. The protective pipes 33, 34 are extended to a height that almost reaches the top end of the rising portion 36a of the foundation 36.

[0043] A lifting portion 38 is formed in the middle portion 31a of the wiring 31 near the rising portion 36a, lifting up toward the ends 33a, 34a that are inside the bases 36 of the protective tubes 33, 34. The ends 33a, 34a that protrude inside the bases 36 of the protective tubes 33, 34 are waterproofed and protected by wrapping tape 39 between them to seal the gap between them and the wiring 31. The outdoor ends 33b, 34b of the protective tubes 33, 34 are introduced inside the support pillars 22 of the pod unit 13 or inside the wiring connection box 24 of the stand unit 14, whereby they are isolated from the outside and made waterproof.

[0044] It is preferable that the solar power generation equipment 15 is connected to the power supply system 11 from a position under the floor 32 through a protective pipe 33 or the like. Also, as shown in Figure 4, the power conditioner unit inside the stand unit 14 of the power supply system 11 may be configured to also function as the power conditioner 17 of the solar power generation equipment 15, and the solar panel 16 may be connected directly to the stand unit 14.

[0045] (3) The building 1 may have protective pipes 33, 34 that protect the wiring 31 connecting the pod section 13 and the stand section 14 of the power supply system 11 and are buried underground, with the end 33a on the building 1 side of the pod section 13 and the end 34a on the building 1 side of the stand section 14 each buried (in advance) at a distance from the foundation 36.

[0046] Here, the portion of the protective tubes 33, 34 on the pod section 13 side is the above-mentioned first protective tube 33. Furthermore, the portion of the protective tubes 33, 34 on the stand section 14 side is the above-mentioned second protective tube 34.

[0047] The ends 33a, 34a of the protective pipes 33, 34 are buried in the foundation 36 when the foundation 36 is poured. The positions at which the ends 33a, 34a of the protective pipes 33, 34 are buried in the foundation 36 are determined in advance depending on the conditions of the site 2, the building 1, and the parking space 5.

[0048] When the foundation 36 is poured, the ends 33a, 34a of the protective pipes 33, 34 are embedded integrally inside the foundation 36 in advance as described above, and the remaining outdoor portions are buried underground. If the power supply system 11 is not installed at the same time as the construction of the building 1, the protective pipes 33, 34 are sealed to prevent rainwater from entering until the power supply system 11 is installed.

[0049] <Operation> The operation of this embodiment will now be described.

[0050] When constructing the building 1, a foundation 36 is poured into the ground on the site 2. At this time, for example, ends 33a and 34a of the protective pipes 33 and 34 are buried in the foundation 36 in advance. The ends 33a and 34a are buried in the foundation 36 near the locations where the pod unit 13 and the stand unit 14 will be installed. The protective pipes 33 and 34 are buried in the ground with lengths sufficient to reach the locations where the pod unit 13 and the stand unit 14 will be installed, respectively. The opposite ends 33b and 34b of the protective pipes 33 and 34 are left above ground. Call lines may be inserted into the protective pipes 33 and 34 in advance. Call lines may be inserted later as needed. This allows the power supply system 11 to be easily installed on the site 2 at any time with simple construction work.

[0051] When installing the power supply system 11, the pod unit 13 and the stand unit 14 are installed separately at separate locations on the site 2. That is, the pod unit 13 is installed near the parking space 5. The stand unit 14 is installed at a location away from the parking space 5. In addition, both ends of the wiring 31 are passed through the protective pipes 33 and 34 from under the floor 32 using a call line. Then, the wiring 31 is pulled out from the other ends 33b and 34b of the protective pipes 33 and 34, and the other ends 33b and 34b of the protective pipes 33 and 34 are introduced into the pod unit 13 and the stand unit 14, respectively, and the wiring 31 is connected to the pod unit 13 and the stand unit 14, respectively. In this way, the pod unit 13 and the stand unit 14 are connected by the wiring 31, and the power supply system 11 is constructed. Furthermore, if a photovoltaic power generation facility 15 is provided, the stand 14 of the photovoltaic power generation facility 15 and the power supply system 11 are connected via a protective pipe 34 .

[0052] <Effects> According to this embodiment, the following effects can be obtained.

[0053] (Effect 1) In the power supply system 11, the charging / discharging stand 4 for the electric vehicle 3 may be divided into a pod section 13 having a charging / discharging gun 12 and a stand section 14 not having a charging / discharging gun 12, and the pod section 13 may be installed around the parking space 5 within the site 2, while the stand section 14 may be installed at a location away from the parking space 5 within the site 2. In this way, by installing only the pod section 13 around the parking space 5 within the site 2, the installation area of ​​the charging / discharging stand 4 around the parking space 5 can be reduced. This allows the pod section 13 and the stand section 14 to be efficiently distributed around the site 2, thereby making effective use of the site 2. The stand section 14 is installed in an unobtrusive location, for example, in an empty space behind the site 2.

[0054] (Effect 2) In the power supply system 11, a building 1 may be interposed between the pod unit 13 and the stand unit 14, and the wiring 31 connecting the pod unit 13 and the stand unit 14 may be installed through an underfloor 32 of the building 1. In this way, by passing the wiring 31 connecting the pod unit 13 and the stand unit 14 through the underfloor 32 of the building 1, the pod unit 13 and the stand unit 14 can be connected over the shortest distance. In addition, the wiring 31 can be easily accessed from the underfloor 32. Furthermore, the portions of the end portions 31b, 31c of the wiring 31 that must be buried underground can be reduced. This reduces the amount of protective pipes 33, 34 used to bury the wiring 31 underground. Furthermore, the construction costs for burying the wiring 31 together with the protective pipes 33, 34 underground can be reduced.

[0055] (Effect 3) In the building 1, the protective pipes 33, 34 that protect and bury the wiring 31 connecting the pod unit 13 and the stand unit 14 of the power supply system 11 may be buried in the ground at positions separate from the foundation 36, with the end 33a of the part (protective pipe 33) on the pod unit 13 side facing the building 1 and the end 34a of the part (protective pipe 34) on the stand unit 14 side facing the building 1. This makes it possible to obtain a building 1 that is already equipped with a configuration for installing the power supply system 11. Therefore, the power supply system 11 can be easily constructed at any time by simply passing the wiring 31 through the protective pipes 33, 34, connecting the pod unit 13 and the stand unit 14 with the wiring 31. [Explanation of symbols]

[0056] 1. Building 2. Site 3. Electric vehicles 4. Charging and discharging stand 5 Parking spaces 11 Power Supply System 12 Charge / discharge gun 13 Pod section 14 Stand section 31 Wiring 32 Underfloor 33 Protection tube 33a end 34 Protective tube 34a end

Claims

1. A charging / discharging stand for an electric vehicle is divided into a pod section having a charging / discharging gun and a stand section not having the charging / discharging gun, The pod section is installed around the parking space on the premises, The stand unit is installed at a position away from the parking space within the site, a building is interposed between the pod section and the stand section; Wiring connecting the pod unit and the stand unit is installed under the floor of the building, A power supply system characterized in that a protective pipe is provided to protect the portion of the wiring that is buried underground, and the end of the protective pipe on the pod section side that faces the building, and the end of the protective pipe on the stand section side that faces the building are buried at positions away from the foundation of the building.

2. A building in which the power supply system according to claim 1 is installed, A building characterized in that the protective pipe, which protects the wiring connecting the pod section and the stand section and is buried underground, has an end portion on the building side of the pod section side and an end portion on the building side of the stand section side buried at positions separate from the foundation.

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