Power supply apparatus

Abstract

To provide a power supply apparatus that can improve convenience.SOLUTION: A power supply apparatus 1 according to the present disclosure includes: a slave unit 3 which has a laminate 32 in which a plurality of sheet-like perovskite solar cells (solar cells 322) are laminated; and a master unit 2 which comprises a power reception unit 23 for receiving a power supply transmitted by the perovskite solar cells (solar cells 322), and a power supply unit 25 for wirelessly supplying the power supplied to the power reception unit 23 to external equipment 4, and in which the slave unit 3 is detachably connected.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a power supply device. [Background technology]

[0002] The power supply device (referred to as "wireless power supply device" in the text) described in Patent Document 1 includes an inverter circuit that converts DC power supplied from an external power source into AC power, and supplies the AC power output from the inverter circuit wirelessly to an external device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-247822 Summary of the Invention [Problem to be solved by the invention]

[0004] The power supply device described in Patent Document 1 is inconvenient because it cannot supply power to an external device in a place where there is no external power source.

[0005] An object of the present disclosure is to provide a power supply device that can improve convenience. [Means for solving the problem]

[0006] The power supply device according to the present disclosure is characterized by including a slave unit having a laminate in which a plurality of sheet-like perovskite solar cells are stacked, a power receiving unit that receives power generated by the perovskite solar cells, and a power supply unit that wirelessly supplies the power received by the power receiving unit to an external device, and a master unit to which the slave unit is detachably connected.

[0007] In the present disclosure, the parent device includes a power receiving unit and a power supply unit. The power receiving unit receives power generated by the perovskite solar cell that constitutes the laminate. Perovskite solar cells have the advantage of being able to generate power even in weak indoor light. The power received by the power receiving unit is supplied wirelessly to an external device via the power supply unit. Therefore, power can be supplied to the external device regardless of the presence or absence of an external power source, thereby improving convenience.

[0008] Because perovskite solar cells are translucent, light that passes through one of the multiple perovskite solar cells that make up the stack can be received by the other perovskite solar cells to generate electricity. By stacking sheet-like perovskite solar cells, multiple perovskite solar cells can be arranged compactly. Perovskite solar cells are flexible, making them easy to conform to the shape of the device.

[0009] The slave unit includes a laminate of perovskite solar cells and is detachably connected to the master unit. Therefore, for example, when the power supply device is not in use, the user can choose to store the power supply device in the storage space with the master unit and slave unit connected, or store the power supply device in the storage space with the slave unit detached from the master unit. This provides high convenience when not in use.

[0010] The power supply device according to the present disclosure is characterized in that the plurality of child devices are detachably connected to one another, and the connected child devices are detachably connected to the parent device.

[0011] In the present disclosure, when multiple interconnected slave units are connected to a master unit, the power generated by the perovskite solar cells constituting the laminates of each slave unit can be collected in the power receiving unit of the master unit. The collected power is then supplied wirelessly to an external device via the power supply unit, so the more slave units there are, the greater the power that can be supplied to the external device.

[0012] The power supply device according to the present disclosure is characterized in that each of the plurality of slave units is detachably connected to the master unit.

[0013] In the present disclosure, when multiple slave devices are connected to a master device, the power generated by the perovskite solar cells that make up the laminates in each slave device can be collected in the power receiving unit of the master device. The collected power is then supplied wirelessly to an external device via the power supply unit, so the more slave devices there are, the greater the power that can be supplied to the external device.

[0014] The power supply device according to the present disclosure is characterized in that the parent unit further includes a laminate in which a plurality of sheet-shaped perovskite solar cells are stacked, and the power receiving unit receives a supply of power generated by the perovskite solar cells that constitute the laminate included in the parent unit.

[0015] In the present disclosure, a power receiving unit of the parent device receives power generated by perovskite solar cells that constitute a laminate included in the parent device. The power received by the power receiving unit is then wirelessly supplied to an external device via a power supply unit. Therefore, the parent device alone can supply power to an external device.

[0016] The power supply device according to the present disclosure is characterized in that the slave unit further comprises an output terminal for supplying the power generated by the perovskite solar cell via a wired connection, the master unit further comprises an input terminal to which the output terminal is connected, and the power receiving unit receives the power via a wired connection via the output terminal and the input terminal.

[0017] In the present disclosure, the slave unit further includes an output terminal, and the master unit further includes an input terminal. The power receiving unit of the parent unit receives a wired supply of power generated by the perovskite solar cell that constitutes the laminate of the child unit via the output terminal of the child unit and the input terminal of the parent unit. Wired power supply is simpler than wireless power supply and has higher power supply efficiency.

[0018] The power supply device according to the present disclosure is characterized in that the slave units each include at least one slave unit input terminal and one output terminal, and a rectangular slave unit housing having the laminate arranged on one surface and the slave unit input terminal and the output terminal arranged on at least two side surfaces adjacent to the one surface, the slave unit input terminal of one of the slave units can be connected to the output terminal of another of the slave units, the power generated by the perovskite solar cell and the power supplied via the slave unit input terminal are supplied to the outside of the slave units via the output terminal in a wired manner, and the master unit further includes four master unit input terminals and a rectangular master unit housing having four master unit input terminals arranged on each of four side surfaces adjacent to the one surface, the output terminals can be connected to the master unit input terminals, and the power receiving unit receives the power supplied via a wired manner via the master unit input terminals.

[0019] In the present disclosure, the slave unit further includes at least one slave unit-side input terminal and one slave unit-side output terminal, and a slave unit-side housing. The slave unit side housing is rectangular. A laminate is arranged on one side of the slave unit side housing. When there is one slave unit side input terminal and one slave unit side output terminal, the slave unit side input terminal and the slave unit side output terminal are arranged on one and the other of two side surfaces adjacent to the one side of the slave unit side housing (the side on which the laminate is arranged). The master unit further includes four master unit side input terminals and a master unit side housing. The main unit housing is rectangular, and four main unit input terminals are arranged on four adjacent sides of one side of the main unit housing.

[0020] The parent unit input terminal of the parent unit can be connected to the output terminal of the child unit, and the child unit input terminal of one child unit can be connected to the output terminal of another child unit. The power generated by the perovskite solar cells that make up the laminated body of the slave unit is supplied to the outside of the slave unit (the master unit or another slave unit connected to the slave unit) via the output terminal of the slave unit. Similarly, the power supplied to the slave unit via the slave unit's input terminal is supplied to the outside of the slave unit via the output terminal of the slave unit.

[0021] The power receiving section of the parent unit receives power generated by the perovskite solar cells that make up the laminate via the parent unit input terminal. Wired power supply is simpler than wireless power supply and has higher power supply efficiency. [Effects of the Invention]

[0022] According to the power supply device of the present disclosure, convenience can be improved. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a perspective view that simply shows a power supply device according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view showing a parent unit and a child unit. [Figure 3] FIG. 2 is a block diagram showing a main part of a power supply device. [Figure 4] FIG. 10 is a perspective view that simply shows a power supply device according to a second embodiment. [Figure 5] FIG. 2 is a block diagram showing a main part of a power supply device. [Figure 6] FIG. 11 is a block diagram showing an example of a connection mode in a power supply device according to a third embodiment. [Figure 7] FIG. 10 is a block diagram showing another example of a connection mode in the power supply device. [Figure 8] FIG. 10 is a block diagram showing an example of a connection mode in a power supply device according to a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, embodiments of the present disclosure will be described.

[0025] Embodiment 1. FIG. 1 is a perspective view that schematically shows a power supply device according to a first embodiment. In the figure, reference numeral 1 denotes a power supply device, which includes a parent device 2 and a child device 3 . FIG. 2 is a cross-sectional view showing the main unit 2 and the sub unit 3. As shown in FIG. As shown in FIGS. 1 and 2, the slave unit 3 includes a housing 31 and a laminated body 32. The housing 31 is a rectangular box with one side completely open. A user places the housing 31 on a table, floor, or the like with the opening on one side of the housing 31 facing upward and the outer bottom surface of the housing 31 facing downward. The top surface (and bottom surface) of the housing 31 is long in one direction. Hereinafter, the longitudinal direction and lateral direction of the top surface of the housing 31 will be referred to as the longitudinal direction and lateral direction of the housing 31.

[0026] As shown in FIG. 2, the laminate 32 includes a substrate 321 and a plurality of solar cells 322 . The substrate 321 has insulating properties. One surface of the substrate 321 has optical reflectivity. Hereinafter, the optically reflective surface of the substrate 321 will be referred to as a reflective surface. Each solar cell 322 is a perovskite solar cell, has a sheet shape, and is flexible and optically transparent. The solar cells 322 are thinner than the substrate 321, but are exaggerated in FIG. 2 for clarity.

[0027] The solar cell 322 receives light and generates DC power. The multiple solar cells 322 are connected to each other in series, for example. When there are two solar cells 322, one solar cell 322 is stacked on the substrate 321 so as to completely cover the reflective surface of the substrate 321, and the other solar cell 322 is stacked on the one solar cell 322 so as to completely cover the other solar cell 322. The number of solar cells 322 may be three or more. The stack 32 may not have a substrate 321. The laminate 32 closes the top opening of the housing 31 with the substrate 321 positioned below the solar cell 322 (see FIG. 1). In order to protect the solar cell 322, it is desirable that the top surface of the laminate 32 be positioned below the periphery of the opening of the housing 31.

[0028] FIG. 3 is a block diagram showing the main parts of the power supply device 1. As shown in FIG. The slave unit 3 further includes a power storage unit 33 , an input terminal 34 , and an output terminal 35 . The power storage unit 33 is, for example, a thin-film battery, and is housed in the housing 31 (see FIG. 2). The power storage unit 33 receives power generated by the solar cell 322 and stores the received power. When power is supplied from outside the handset 3 via the input terminal 34, the power storage unit 33 stores the received power. The power stored in the power storage unit 33 is supplied to the outside of the handset 3 via the output terminal 35 .

[0029] As shown in Fig. 2, the input terminal 34 and the output terminal 35 are each provided so as to be exposed on the outer surface of the housing 31. For example, the input terminal 34 is arranged on one side surface of the housing 31 in the longitudinal direction (see Fig. 1). The input terminal 34 is also located at the center of the side surface on which the input terminal 34 is arranged. On the other hand, the output terminal 35 is arranged on the other side surface of the housing 31 in the longitudinal direction, and, like the input terminal 34, is also located at the center of the side surface on which the output terminal 35 is arranged. The positions of the input terminal 34 and the output terminal 35 are not limited to those shown in the figure, and may be arranged, for example, one on each side of the housing 31 in the short direction. An input terminal 34 of one slave unit 3 is detachably connected to an output terminal 35 of the other slave unit 3 . The slave unit 3 may be provided with M input terminals 34 (M is a natural number greater than or equal to 2).

[0030] The configuration for maintaining the connection between the input terminal 34 and the output terminal 35 is not limited. For example, one of the input terminal 34 and the output terminal 35 has a ferromagnetic material (or a magnet with a north pole), and the other of the input terminal 34 and the output terminal 35 has a magnet (or a magnet with a south pole), and the connection between the input terminal 34 and the output terminal 35 is maintained by the attractive force of the magnet. Alternatively, the convex output terminal 35 is inserted into the concave input terminal 34, and the connection between the input terminal 34 and the output terminal 35 is maintained by the frictional force generated between them. It is desirable that at least the input terminal 34 and the output terminal 35 are waterproof when connected to each other.

[0031] As shown in FIGS. 1 and 2, the base unit 2 includes a housing 21 and a laminated body 22. The housing 21 is a rectangular box. An opening 211 is provided on one side of the housing 21. A user places the housing 21 on a table, floor, or the like with the opening 211 facing upward and the outer bottom surface of the housing 21 facing downward. The top surface (and bottom surface) of the housing 21 is long in one direction. The vertical length, horizontal width, and height of the housing 21 are equal to the vertical length, horizontal width, and height of the housing 31. Hereinafter, the longitudinal direction and short side direction of the top surface of the housing 21 will be referred to as the longitudinal direction and short side direction of the housing 21. Opening 211 is disposed on one side in the longitudinal direction of the top surface of housing 21. The area of ​​opening 211 is, for example, about half the area of ​​the top surface of housing 21. The other side in the longitudinal direction of the top surface of housing 21 is a placement portion 212.

[0032] 2, stack 22 includes substrate 221 and a plurality of solar cells 222. Stack 22 has the same configuration as stack 32 of handset 3, and substrate 221 and solar cell 222 correspond to substrate 321 and solar cell 322. The laminate 22 closes the opening 211 of the housing 21 with the substrate 221 positioned below the solar cell 222. In order to protect the solar cell 222, it is desirable that the top surface of the laminate 22 be positioned below the periphery of the opening 211.

[0033] As shown in FIG. 3, the base unit 2 further includes a power receiving unit 23, an input terminal 24, and a power supply unit 25. The power receiving unit 23 is housed in the housing 21 (see FIG. 2), and includes a constant voltage circuit 231 and a power storage unit 232. Constant voltage circuit 231 has the function of keeping the voltage constant. Power generated by solar cell 222 is input to constant voltage circuit 231. Power is also input to constant voltage circuit 231 from outside parent unit 2 via input terminal 24. The power input to constant voltage circuit 231 is output to power storage unit 232. Due to the action of constant voltage circuit 231, the output voltage to power storage unit 232 is constant.

[0034] The power storage unit 232 is, for example, a thin-film battery. The power storage unit 232 receives power generated by the solar cell 222 via the constant voltage circuit 231 and stores the received power. When power storage unit 232 receives power from outside the parent unit 2 via the input terminal 24 and the constant voltage circuit 231, the power storage unit 232 stores the received power. In addition, in the slave unit 3, a constant voltage circuit similar to the constant voltage circuit 231 may be provided between the solar cell 322 and the input terminal 34 and the power storage unit 33.

[0035] 2, input terminal 24 is provided so as to be exposed on the outer surface of housing 21. For example, input terminal 24 is arranged on one side surface of housing 21 in the longitudinal direction. Furthermore, input terminal 24 is located at the center of the side surface on which input terminal 24 is arranged. Note that the position of input terminal 24 is not limited to that shown in the figure, and it may be arranged on one side surface of housing 21 in the lateral direction, for example. An output terminal 35 of the slave device 3 is detachably connected to the input terminal 24. The configuration for maintaining the connection between the input terminal 24 and the output terminal 35 is not limited, as is the case with the configuration for maintaining the connection between the input terminal 34 and the output terminal 35.

[0036] The power stored in power storage unit 232 of power receiving unit 23 is supplied to power supply unit 25. It is difficult to stabilize the output voltage from solar cell 222, but by interposing power receiving unit 23 between solar cell 222 and power supply unit 25, the output voltage to power supply unit 25 can be stabilized. The power supply unit 25 is a device for wirelessly supplying the power received by the power receiving unit 23 to the external device 4. The external device 4 is, for example, a smartphone or a tablet. The external device 4 has a built-in power receiving coil 41. Power supply unit 25 is housed in housing 21. As shown in FIG.

[0037] The power conversion unit 251 includes, for example, a DC / AC inverter, and converts DC power from the power storage unit 232 into AC power. The power storage unit 232 is also used as a power source for the power conversion unit 251. AC power is input to power feeding coil 252 from power conversion unit 251. Power feeding coil 252 is disposed below mounting portion 212 of housing 21 (see FIG. 2). At least mounting portion 212 of housing 21 is made of a material that does not impede electromagnetic induction.

[0038] When using the power supply device 1, the user prepares a base unit 2 and multiple slave units 3. The user connects one slave unit 3 to the base unit 2 by connecting the output terminal 35 of the slave unit 3 to the input terminal 24 of the base unit 2. The user also connects one slave unit 3 to another slave unit 3 by connecting the input terminal 34 of the first slave unit 3 to the output terminal 35 of the second slave unit 3. If there are three or more slave units 3, the user connects two slave units 3 to each other by connecting the output terminal 35 of the second slave unit 3 to the input terminal 34 of the second slave unit 3. If there are three or more slave units 3 and the slave units 3 have M input terminals 34, the user may connect the output terminals 35 of m slave units 3 to m input terminals 34 of one slave unit 3 (m is a natural number satisfying 2≦m≦M).

[0039] In this manner, the power supply device 1 is assembled by connecting a plurality of slave units 3 to one another and then connecting the connected slave units 3 to the base unit 2. Note that the user may also assemble the power supply device 1 by preparing one each of the base unit 2 and the slave unit 3 and connecting the slave unit 3 to the base unit 2. After assembling the power supply device 1, the user installs the power supply device 1 so that light is incident on the upper surfaces of the laminates 22 and 32. The light incident on the laminates 22 and 32 is preferably visible light, but may also be ultraviolet or infrared light.

[0040] When light is incident on the upper surface of the laminate 22, the light is incident on the solar cell 222 on the upper side of the laminate 22, and the light that passes through this solar cell 222 is incident on the solar cell 222 on the lower side of the laminate 22. The light that passes through both solar cells 222 is reflected by the reflective surface of the substrate 221. The reflected light is incident on the solar cell 222 again. Similarly, when light is incident on the upper surface of the laminate 32, the light is incident on the solar cell 322 on the upper side of the laminate 32, and the light that passes through this solar cell 322 is incident on the solar cell 322 on the lower side of the laminate 32. The light that passes through both solar cells 322 is reflected by the reflective surface of the substrate 321. The reflected light is incident on the solar cell 322 again.

[0041] The solar cells 222, 322 receive light incident thereon and generate DC power. The DC power generated by the solar cell 222 of the parent device 2 is stored in its own power storage unit 232. The DC power generated by the solar cell 322 of the child device 3 connected to the parent device 2 is stored in the power storage unit 232 of the parent device 2 via its own power storage unit 33. The DC power generated by the solar cell 322 of the child device 3 connected to the child device 3 is stored in the power storage unit 232 of the parent device 2 via its own power storage unit 33 and the power storage unit 33 of the other device. The DC power stored in the power storage unit 232 is supplied to the power supply unit 25 via the power storage unit 232. The DC power supplied to the power supply unit 25 is converted into AC power by the power conversion unit 251 and input to the power supply coil 252.

[0042] The user places the external device 4 on the placement section 212 of the base unit 2 (see FIGS. 1 and 2). When the external device 4 is placed on the placement section 212 of the parent device 2, the power receiving coil 41 and the power feeding coil 252 face each other vertically (see FIG. 2). When the external device 4 is placed on the placement section 212 and AC power is input to the power feeding coil 252, an electromotive force is generated in the power receiving coil 41 due to electromagnetic induction. In other words, the DC power generated by the solar cells 222, 322 is converted into AC power and then supplied to the external device 4 wirelessly.

[0043] The power supply control unit 253 controls power supply from the parent device 2 to the external device 4. For example, the power supply control unit 253 communicates with the external device 4 and determines whether power supply to the external device 4 is necessary. If power supply to the external device 4 is not necessary, the power supply control unit 253 stops the output of power from the power conversion unit 251 to the power supply coil 252. The power storage unit 232 is also used as a power source for the power supply control unit 253.

[0044] Alternatively, a ferromagnetic material and a magnet (or magnets with opposite polarities) may be provided in the housing 21 and the external device 4, and the magnetic attraction may prevent the external device 4 placed on the placement unit 212 from shifting in position. Alternatively, the placement unit 212 may be provided with a holder (for example, a smartphone stand) that holds the external device 4 in a predetermined position, and the power receiving coil 41 may be built into the holder. In the above cases, it is possible to prevent a decrease in power supply efficiency caused by a shift in position of the power receiving coil 41 relative to the power supply coil 252.

[0045] According to the power supply device 1 described above, the power storage unit 232 of the parent device 2 receives power generated by the solar cells 222, 322 constituting the laminated bodies 22, 32. The solar cells 222, 322 have the advantage of being able to generate power even in weak indoor light. The power received by the power storage unit 232 is supplied wirelessly to the external device 4 via the power supply unit 25. Therefore, power can be supplied to the external device 4 regardless of the presence or absence of an external power source, thereby improving convenience.

[0046] The power supply device 1 supplies power from the slave device 3 to the master device 2 via a wired connection, and from one slave device 3 to another slave device 3 via a wired connection. Wired power supply is simpler than wireless power supply and has higher power supply efficiency. Since power is supplied from the master device 2 to the external device 4 via wireless power supply, there is no need to connect the master device 2 and the external device 4 via a wired connection, which is highly convenient. The power supply device 1 may be configured to supply power wirelessly from a slave device 3 to a master device 2, or may be configured to supply power wirelessly from one slave device 3 to another slave device 3. In the case of wireless power supply, the power supply device 1 may be configured to supply power from one slave device 3 to a master device 2 (or another slave device 3) that is not connected to the slave device 3.

[0047] Because the solar cells 322 are translucent, light that passes through one solar cell 322 among the multiple solar cells 322 constituting the laminate 32 can be received by the other solar cells 322 to generate electricity. By stacking sheet-like solar cells 322, multiple solar cells 322 can be arranged compactly. The same applies to the laminate 22. Since the solar cells 222 and 322 are thin and light, the weight of the power supply device 1 can be reduced.

[0048] The handset 3 is detachably connected to the base unit 2. The handset 3 are also detachably connected to each other. Therefore, for example, when the power supply device 1 is not in use, the user can choose to store the assembled power supply device 1 in a storage space, or to detach the handset 3 from the base unit 2 and store the power supply device 1 in a storage space with the handset 3 detached from each other. This provides high convenience when not in use. Furthermore, the more handset 3 the power supply device 1 has, the more power it can supply to the external device 4. Therefore, by increasing or decreasing the number of handset 3 as needed, it is possible to appropriately supply power to the external device 4.

[0049] Note that the base unit 2 may be configured to be able to supply power to the power receiving unit 23 from an external power source (not shown). In this case, the power storage unit 232 also stores the power supplied from the external power source. For example, when the amount of power generated by the solar cells 222, 322 is insufficient due to insufficient light, the external power source can be used to charge the power storage unit 232, further improving convenience. Similarly, the slave unit 3 may be configured to be able to supply power to the power storage unit 33 from an external power source (not shown). The wireless power supply from the master unit 2 to the external device 4 is not limited to that by electromagnetic induction.

[0050] The shapes and dimensional ratios of the components of the power supply device 1 are not limited to those shown in the drawings. For example, the dimensions of the housing 21 may be larger than the dimensions of the housing 31. The parent unit 2 may not have the stacked body 22. In this case, the area of ​​the mounting portion 212 can be increased. On the other hand, when the parent unit 2 has the stacked body 22 as in the present embodiment, the parent unit 2 alone can supply power to the external device 4. The slave unit 3 may not have a power storage unit 33. However, when the slave unit 3 has the power storage unit 33 as in the present embodiment, the power storage unit 33 is charged in advance before connecting the slave unit 3 to the master unit 2, thereby stabilizing the power supply to the external device 4.

[0051] The connection between the parent unit 2 and the child unit 3 is not limited to the connection between the input terminal 24 and the output terminal 35. For example, one of the housings 21, 31 has a ferromagnetic material, and the other of the housings 21, 31 has a magnet, and the parent unit 2 and the child unit 3 are connected to each other by the attractive force of the magnet. Alternatively, the housings 21, 31 are each provided with corresponding projections and recesses, and the parent unit 2 and the child unit 3 are connected to each other by engagement of the projections and recesses. Similarly, the connection between the child units 3 is not limited to the connection between the input terminal 34 and the output terminal 35.

[0052] Next, embodiments 2 to 4 will be described. The configuration and effects of the power supply device 1 of embodiments 2 to 4 are substantially the same as the configuration and effects of the power supply device 1 of embodiment 1. Below, differences from embodiment 1 will be described, and other components that are the same as those of embodiment 1 will be assigned the same reference numerals and descriptions thereof will be omitted.

[0053] Embodiment 2. FIG. 4 is a perspective view that schematically shows a power supply device 1 according to the second embodiment. FIG. 5 is a block diagram showing the main parts of the power supply device 1. As shown in FIG. In the power supply device 1 of this embodiment, the master unit 2 has M input terminals 24. 5 has two input terminals 24, but may have three or more. Also, the slave unit 3 does not have an input terminal , but may have one or more input terminals . 4, the two input terminals 24 are arranged on two different side surfaces of the housing 21, but they may also be arranged on the same side surface of the housing 21. For example, the two input terminals 24 are arranged on one side surface of the housing 21 in the short side direction, adjacent to each other in the long side direction of the housing 21.

[0054] When using the power supply device 1 of this embodiment, a user prepares a base unit 2 and m slave units 3. The user connects the m output terminals 35 of the m slave units 3 to the base unit 2. In the case of the power supply device 1 shown in FIG. 4, two slave units 3 are connected to the base unit 2 so that both longitudinal side surfaces of the housing 21 of the base unit 2 face one longitudinal side surface of the housing 31 of each slave unit 3. The power supply device 1 is assembled by connecting each of the multiple slave units 3 to the base unit 2. The user may prepare one each of the base unit 2 and the slave unit 3 and assemble the power supply device 1 by connecting the slave unit 3 to the base unit 2.

[0055] After assembling the power supply device 1, the user installs the power supply device 1 so that light is incident on the upper surfaces of the laminates 22 and 32, as in the case of the first embodiment. Furthermore, the user places the external device 4 on the placement section 212 of the parent device 2. As a result, the DC power generated by the solar cells 222 and 322 is converted into AC power and then supplied to the external device 4 wirelessly. As with the power supply device 1 of the first embodiment, the power supply device 1 described above can supply power to the external device 4 regardless of the presence or absence of an external power source, thereby improving convenience. Also, the more slave devices 3 there are, the more power can be supplied to the external device 4.

[0056] Embodiment 3. FIG. 6 is a block diagram showing an example of a connection mode in the power supply device 1 according to the third embodiment. The base unit 2 further includes four magnets 26. The four magnets 26 are housed in the housing 21 (base unit side housing) and are arranged on the four side surfaces of the housing 21. For example, the magnets 26 are bar magnets. The four magnets 26 extend along the four side surfaces and the inner bottom surface of the housing 21 and are positioned below the input terminal 34. The north and south poles of the four magnets 26 are arranged point-symmetrically with respect to the center of the inner bottom surface of the housing 21 in a plan view.

[0057] The slave unit 3 further includes four magnets 36. The four magnets 36 are housed in the housing 31 (the slave unit side housing) and are arranged on the four side surfaces of the housing 31. The magnets 36 are also bar magnets, and the arrangement and orientation of the magnets 36 are similar to the arrangement and orientation of the magnets 26. The magnets 26 and 36 are attracted to each other, thereby connecting the parent unit 2 and the child unit 3. This prevents the connection between the input terminal 24 and the output terminal 35 from being unnecessarily released. When the input terminal 24 and the output terminal 35 each have separate positive and negative poles, it is desirable that the magnets 26 and 36 be arranged so that they repel each other when the same poles of the input terminal 24 and the output terminal 35 face each other.

[0058] As in the case of connecting the master unit 2 and the slave unit 3, the magnet 36 of one slave unit 3 and the magnet 36 of the other slave unit 3 attract each other, thereby connecting the two slave units 3 to each other. Therefore, it is possible to prevent the connection between the input terminal 34 and the output terminal 35 from being unnecessarily released.

[0059] In this embodiment, input terminals 24 (parent device side input terminals) are arranged on each side of the housing 21 of the parent device 2. The child device 3 has one input terminal 34 (child device side input terminal). The slave units 3 include one having three output terminals 35 (hereinafter referred to as slave unit 3A) and one having one output terminal 35 similar to the slave unit 3 of embodiment 1 (hereinafter referred to as slave unit 3B). In slave unit 3A, the three output terminals 35 are arranged on both longitudinal side surfaces and one lateral side surface of the housing 31, and one input terminal 34 is arranged on the other lateral side surface of the housing 31. In slave unit 3B, the input terminal 34 and the output terminal 35 are arranged on both longitudinal side surfaces of the housing 31.

[0060] The power supply device 1 shown in FIG. 6 includes a main unit 2 and eight slave units 3, of which two are slave units 3A and the remaining six are slave units 3B. The user connects two slave units 3A and two slave units 3B to the base unit 2 so that one side surface in the longitudinal direction or one side surface in the lateral direction of each housing 21, 31 faces each other. The user also connects two more slave units 3B to each slave unit 3A so that one side surface in the longitudinal direction of the housing 31 faces each other. As a result, a power supply device 1 having eight slave units 3 arranged around the base unit 2 can be obtained. By connecting additional slave units 3 to the slave units 3 included in the power supply device 1, the number of slave units 3 included in the power supply device 1 can be increased.

[0061] FIG. 7 is a block diagram showing another example of a connection mode in the power supply device 1. In FIG. The power supply device 1 shown in FIG. 7 includes a master unit 2 and five slave units 3, one of which is a slave unit 3A and the remaining four are slave units 3B.

[0062] The user connects the slave unit 3A to the base unit 2 so that one side surface in the short direction of the housings 21, 31 faces each other. The user also connects two slave units 3B to the base unit 2 so that one side surface in the long direction of the housings 21, 31 faces each other. The user then connects two slave units 3B to the slave unit 3A so that one side surface in the long direction of the housings 31 faces each other. As a result, a power supply device 1 having five slave units 3 arranged so that they face each other on two side surfaces of the housing 21 of the base unit 2 can be obtained. By connecting additional slave units 3 to the base unit 2 or slave units 3 included in the power supply device 1, the number of slave units 3 included in the power supply device 1 can be increased.

[0063] Embodiment 4. FIG. 8 is a block diagram showing an example of a connection mode in the power supply device 1 according to the fourth embodiment. In the case of the power supply device 1 of embodiment 3, by providing two types of sub-units 3 (sub-units 3A and 3B), it is possible to increase the flexibility in the number of sub-units 3 and the manner in which the sub-units 3 are connected to the parent unit 2 (see Figures 6 and 7). In the case of the power supply device 1 of this embodiment, by providing one type of slave unit 3, the degree of freedom in the number of slave units 3 and the manner in which the slave units 3 are connected to the base unit 2 can be improved.

[0064] The configuration of the base unit 2 of this embodiment is substantially the same as that of the base unit 2 of embodiment 3, and the four input terminals 24 are arranged in point symmetry in a plan view, with the center of the inner bottom surface of the housing 21 as the center of symmetry. However, each input terminal 24 is positioned at a distance offset in one direction (for example, leftward as viewed from the side) from the center position of the side surface on which the input terminal 24 is arranged. Each slave unit 3 has four input terminals 34 and four output terminals 35. The arrangement of the four input terminals 34 is the same as the arrangement of the four input terminals 24 of the master unit 2. The four output terminals 35 are arranged on the four side surfaces of the housing 31 in a point symmetry with the center of the inner bottom surface of the housing 31 as the center of symmetry in a plan view. However, each output terminal 35 is positioned at a suitable distance in one direction (for example, to the right as viewed from the side surface) from the center position of the side surface on which the output terminal 35 is arranged.

[0065] When one longitudinal side surface of the housing 31 of the slave unit 3 faces one longitudinal side surface of the housing 21 of the master unit 2, the output terminal 35 and the input terminal 24 arranged on these sides face each other. Similarly, when one lateral side surface of the housing 31 of the slave unit 3 faces one lateral side surface of the housing 21 of the master unit 2, the output terminal 35 and the input terminal 24 arranged on these sides face each other.

[0066] For example, a slide switch (not shown) is provided on the housing 31 for each output terminal 35, and each time the user operates the slide switch, the output terminal 35 is switched between a state in which it protrudes from the side surface of the housing 31 and a state in which it is recessed into the side surface of the housing 31. When the output terminal 35 is recessed, there is no risk that it will be connected to the input terminal 24 of the parent device 2 or the input terminal 34 of another child device 3.

[0067] The user can use the handset 3 in the same manner as the handset 3A of the third embodiment by protruding the output terminal 35 arranged on one side surface in the short direction of the housing 31 and retracting the other three output terminals (see the two on the left side of the four handset 3 shown in FIG. 8). Also, the user can use the handset 3 in the same manner as the handset 3B of the third embodiment by protruding the output terminal 35 arranged on one side surface in the long direction of the housing 31 and retracting the other three output terminals (see the two on the right side of the four handset 3 shown in FIG. 8).

[0068] The embodiments disclosed herein are to be considered as illustrative in all respects and not restrictive. The scope of the present invention is intended to include not only the above-mentioned meaning but also the meaning equivalent to the claims and all modifications within the scope of the claims. The constituent elements (technical features) disclosed in each embodiment can be combined with each other, and new technical features can be formed by such combinations. Furthermore, the independent and dependent claims described in the claims can be combined with each other in any and all combinations, regardless of the reference format. Furthermore, while the claims use a format in which a claim references two or more other claims (multiple claim format), this is not limited to this format. A multiple claim (multi-multi claim) that references at least one other multiple claim may also be used. [Explanation of symbols]

[0069] 1 Power supply device 2 Base unit 21 Housing (parent unit housing) 22 Laminate 222 Solar Cells (Perovskite Solar Cells) 23 Power receiving unit 24 Input terminal (parent unit input terminal) 25 Power supply unit 3 Handsets 31 Housing (child unit housing) 32 Laminate 322 Solar Cells (Perovskite Solar Cells) 34 Input terminal (child unit input terminal) 35 Output terminal 4 External equipment

Claims

1. a slave unit including a laminate in which a plurality of sheet-shaped perovskite solar cells are laminated; a power receiving unit that receives power generated by the perovskite solar cell, and a power supply unit that wirelessly supplies the power received by the power receiving unit to an external device, and a parent unit to which the child unit is detachably connected; A power supply device comprising:

2. The plurality of slave units are detachably connected to each other, 2. The power supply device according to claim 1, wherein the plurality of connected slave units are detachably connected to the master unit.

3. 3. The power supply device according to claim 1, wherein each of the plurality of slave units is detachably connected to the master unit.

4. The parent unit further includes a stack of a plurality of sheet-shaped perovskite solar cells, 3. The power supply device according to claim 1, wherein the power receiving unit receives a supply of power generated by the perovskite solar cell that constitutes the laminate included in the parent device.

5. the slave device further includes an output terminal for supplying the power generated by the perovskite solar cell via a wire; the parent device further includes an input terminal to which the output terminal is connected, The power supply device according to claim 1 , wherein the power receiving unit receives the power supplied via a wire via the output terminal and the input terminal.

6. The slave unit is At least one input terminal and one output terminal on the slave device side; a rectangular child device side housing having the laminate disposed on one side and the child device side input terminal and the output terminal disposed on at least two side surfaces adjacent to the one side; Further provided with The output terminal of one of the slave devices can be connected to the slave device side input terminal of the other slave device, the power generated by the perovskite solar cell and the power supplied via the slave device side input terminal are supplied via a wire to an outside of the slave device via the output terminal; The parent device is Four parent unit input terminals, a rectangular base unit side housing having four base unit side input terminals arranged on each of four adjacent sides of one side; Further provided with The output terminal can be connected to the parent device side input terminal, The power supply device according to claim 1 , wherein the power receiving unit receives the power supplied via a wired connection via the parent device side input terminal.

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