Wireless power supply system

Abstract

In recent years, cashless payments (also known as "electronic payments") have become widespread, and if the smartphone used for cashless payments runs out of power, payments cannot be made, which can lead to inconvenient situations. Furthermore, providing wired charging devices involves complicated wiring and requires careful consideration of the wiring layout. [Solution] The present invention has been made in view of the above circumstances, and provides a system for safely and efficiently supplying power wirelessly to a mobile device such as a smartphone at any location within a living space.

Description

Technical Field

[0001] The present invention relates to a wireless power supply system for wirelessly charging a mobile device in a living space.

Background Art

[0002] In recent years, cashless payment (also referred to as "electronic payment") has been recommended. By cashless payment, cash management can be abolished, and problems such as labor shortage and productivity improvement can be solved. In addition, maintaining the infrastructure cost of cash payment requires a huge cost, and it is also possible to reduce these costs.

[0003] For electronic payment, there are those that install a dedicated app on a mobile device such as a smartphone for payment, those that use a credit card for payment, and those that use a prepaid card for payment. In credit card payment and prepaid card payment, the possibility of becoming unusable is low as long as the card is not physically damaged. On the other hand, in electronic payment using a mobile device such as a smartphone, payment cannot be made when the power of the mobile device runs out. In particular, a smartphone is used for various purposes such as phone calls, games, SNS, and photography, so power consumption is large, and there are cases where the power has run out without notice.

[0004] In addition, in certain events, only electronic payment is valid and the use of cash is prohibited. In such a situation, if the power of the smartphone used for electronic payment runs out and there is no other payment means, the purchaser (user) of goods and services will be very troubled. Therefore, it is conceivable to lend a charging cable or the like that can charge a mobile device such as a smartphone. However, if it is a wired method, a large number of lines (wires) for charging need to be prepared according to various input / output shapes, which is also visually complicated. Therefore, it is conceivable to charge a mobile device wirelessly. The following prior arts are available as prior arts of wireless charging.

Prior Art Documents

[0005] [Patent Document 1] Japanese Patent Publication No. 2021-7276 [Patent Document 2] Japanese Patent Publication No. 2016-182035 [Patent Document 3] Japanese Patent Publication No. 2024-47209 [Overview of the project] [Problems that the invention aims to solve]

[0006] Wireless power supply (wireless power transfer) methods include electromagnetic induction, electrolytic coupling, and electromagnetic wave methods (microwaves, lasers). Electromagnetic induction is compact, low-cost, and can transmit relatively large amounts of power efficiently. Furthermore, there is an international standard called "Qi" for wireless charging, which utilizes this electromagnetic induction method. Therefore, many smartphones that support wireless charging are compatible with the "Qi" standard. However, electromagnetic induction has the disadvantage of a short power transmission distance (approximately a few millimeters to 10 centimeters).

[0007] The electromagnetic wave method is a power transmission method that uses an electromagnetic field to transmit power, where the transmitting side converts electric current into electromagnetic waves and transmits them, and the receiving side receives the electromagnetic waves from an antenna and converts them into DC current using a rectifier circuit. This method has the advantage of long power transmission distances (several meters). On the other hand, this electromagnetic wave method has the disadvantage of poor power transmission efficiency, making it difficult to transmit large amounts of power. Furthermore, outputting high-power electromagnetic waves (wireless signals) over long distances is undesirable because it requires consideration of the impact on other wireless devices and the human body. In short, wireless power supply using the electromagnetic wave method has the problem of being difficult to supply sufficient power to meet the power consumption of smartphones while considering the impact on the human body.

[0008] This invention has been made in view of the above circumstances, and provides a system for safely and efficiently supplying power wirelessly to a device such as a smartphone at any location in a living space. [Means for solving the problem]

[0009] The first invention, a wireless power supply system for solving the aforementioned problems, is: A wireless power supply system capable of supplying power to a device by placing the device on a designated position on a storage stand arranged in a living space, A first wireless power supply device capable of supplying power wirelessly, The device includes a second wireless power supply unit that has a power storage unit capable of receiving power from the first wireless power supply unit and storing said power, and that can wirelessly supply power to the device using the power from the power storage unit, The aforementioned storage stand comprises a base portion having a mounting surface on which the device can be placed, The distance over which the first wireless power supply device can supply power to the second wireless power supply device is longer than the distance over which the second wireless power supply device can supply power to the device. The second wireless power supply device is provided on the base portion of the storage stand, The first wireless power supply device is provided below the second wireless power supply device which is provided on the base portion of the storage stand, The power storage unit of the second wireless power supply device stores power supplied from the first wireless power supply device, and when the device is placed in the predetermined location, the second wireless power supply device wirelessly supplies power to the device using the power from the power storage unit. It is characterized by the following:

[0010] Such a wireless power supply system includes a platform on which a device can be placed, a first wireless power supply device capable of supplying power wirelessly, and a second wireless power supply device capable of supplying power wirelessly. The first wireless power supply device has a longer wireless power transmission distance than the second wireless power supply device. The second wireless power supply device is located on the upper part of the platform, and the first wireless power supply device is located below the second wireless power supply device. The power storage unit of the second wireless power supply device receives power from the first wireless power supply device and stores it, enabling the second wireless power supply device placed on the platform to be powered wirelessly.

[0011] This configuration leverages the strengths of both the first and second wireless power supply devices, which have different wireless power transmission capabilities. Furthermore, by installing the second wireless power supply device on the base of the storage unit and positioning the first wireless power supply device below the second, it enables safe and efficient wireless power supply to devices without unnecessarily emitting electromagnetic waves into the living space.

[0012] Furthermore, the wireless power supply system of the second invention is, in the wireless power supply system of the first invention, The storage platform is surrounded by chairs where users can sit. The second wireless power supply device is characterized in that when the user, seated in the chair, places the device in the predetermined position, the second wireless power supply device supplies power to the device wirelessly.

[0013] This type of wireless power supply system includes a platform surrounded by chairs for users to sit on. When a user sits in one of the chairs and places their device in a designated position on the platform, wireless power is supplied to that device. This allows users to safely and efficiently wirelessly power (charge) their devices while they are sitting in the chairs surrounding the platform, resting or working.

[0014] Furthermore, the wireless power supply system of the third invention is, in the wireless power supply system of the second invention, When the user approaches the storage platform, the first wireless power supply device will not supply power to the second wireless power supply device. The first wireless power supply device is characterized in that, if the user is not approaching the storage platform, it supplies power to the second wireless power supply device.

[0015] With this type of wireless power supply system, when a user approaches the storage platform, the supply of power (wireless power supply) from the first wireless power supply device to the second wireless power supply device is stopped, and when the user is not approaching the storage platform, the supply of power (wireless power supply) from the first wireless power supply device to the second wireless power supply device is enabled. When a user approaches the storage platform, the user's (for example, a seated user) feet may come close to the electromagnetic wave output area at the bottom of the placement surface (platform). Therefore, by stopping the wireless power supply from the first wireless power supply device when the user approaches the storage platform, the possibility of electromagnetic waves emitted from the floor adversely affecting the seated user can be reduced.

[0016] Here, proximity detection means (such as an infrared sensor) may be installed at a predetermined position on the storage unit to detect when a user approaches the unit, and the presence or absence of approach may be determined by the ON or OFF state of the proximity detection means. Alternatively, the proximity detection means may be installed on the chair. The proximity detection means may also be a sensor capable of determining whether or not a user is seated in the chair.

[0017] Furthermore, the wireless power supply system of the fourth invention is, in the wireless power supply system of the first or second invention, The invention is characterized by providing an intrusion prevention member between the first wireless power supply device and the second wireless power supply device, which surrounds the output area of ​​the electromagnetic waves output from the first wireless power supply device to the second wireless power supply device.

[0018] According to such a wireless power supply system, a shielding member is provided to surround the electromagnetic wave output area between the first wireless power supply device and the second wireless power supply device. Also, by physically surrounding the periphery of the electromagnetic wave output area with the shielding member, it is possible to prevent a user's foot sitting on the chair from accidentally entering the electromagnetic wave output area. Thereby, it enables wireless power supply to a device safely and efficiently.

Effect of the Invention

[0019] According to the present invention, it is possible to wirelessly supply power to devices in a living space safely and efficiently by using a plurality of wireless power supply devices having different wireless power transmission capabilities.

Brief Description of the Drawings

[0020] [Figure 1] It is a diagram showing an embodiment of a system for wirelessly charging a mobile device in a living space. [Figure 2] It is a block diagram showing the configuration of a wireless power supply system. [Figure 3] (a) It is a perspective view showing an electromagnetic induction type wireless power supply device. (b) It is a view of a table with an electromagnetic induction type wireless power supply device installed, seen from the upper surface of the table. (c) It is a view of a table with an electromagnetic induction type wireless power supply device installed, seen from the side surface of the table. [Figure 4] It is a diagram showing another embodiment of a system for wirelessly charging a mobile device in a living space. [Figure 5] It is a diagram showing an embodiment of a system for wirelessly charging a mobile device in a living space. [Figure 6] (a) It is a perspective view showing the base of a table. (b) It is a perspective view showing the legs of a table. (c) It is a perspective view showing a table. <​​​​(a) This figure shows another embodiment of Embodiment 2 of a system for wirelessly supplying power to mobile devices in a living space. (b) This is a view of the floor from above. [Modes for carrying out the invention]

[0021] Next, embodiments of the present invention will be described using examples. In the following, an example of applying the wireless power supply system of the present invention to the living space of a cafe (coffee shop) will be described. Furthermore, this embodiment is just one example of the installation of the wireless power supply system on structure 2, and is not limited to this embodiment. It is applicable to a variety of spaces. [Examples]

[0022] The wireless power supply system 1 of Embodiment 1 is a system that combines multiple wireless power supply devices with different wireless power supply capabilities (wireless power supply mechanisms) to wirelessly charge mobile devices such as smartphones used by users at a set location in the living space. In this embodiment, a set location 81 (also called a charging location, charging area, or specific location) where mobile devices such as smartphones 71 can be wirelessly charged is provided on the table 61. Since this table 61 is not connected to a commercial AC power supply (and is not restricted in terms of movement or installation location by cables), it is possible to lay out the table 61 at any location in the living space.

[0023] This allows stores to arrange tables, chairs, and other equipment in any layout they prefer, without having to consider wiring or other routing. Furthermore, since there's no need to consider wiring in relation to the layout, costs can be reduced both for the initial layout and for any subsequent layout changes.

[0024] Figure 1 is a schematic diagram showing a portion of the exterior and interior of a living space 3 of a structure 2 that operates a cafe (coffee shop) equipped with the wireless power supply system 1 of the present invention. This cafe allows the use of electronic payment for the purchase of goods and services (it may also be electronic payment only). Three tables are arranged at predetermined intervals within the living space 3. Chairs are placed on either side of each table, making them two-seater tables. Each table is occupied by one user, and the diagram shows each user drinking a beverage while charging their own smartphone 71 at a designated location (charging location, specific location) on the table. In this embodiment, a smartphone compatible with electromagnetic induction wireless charging such as the Qi standard is used.

[0025] Solar panels 11 (for example, with a power generation capacity of 10 kW) are installed on the roof of structure 2, enabling power generation from sunlight. Furthermore, on the right side of the exterior wall of structure 2, a power conditioner 21 is installed at the top, and a solar battery 31 (solar energy storage device) for storing electricity generated by the solar panels 11 is installed at the bottom. These solar panels 11, power conditioner 21, and solar battery 31 are electrically connected by cables 12. The power conditioner 21 is a well-known device that converts the electricity generated by the solar panels 11 and the electricity stored in the solar battery 31 from direct current to alternating current, and also has the function of shutting off external power output in the event of overvoltage or undervoltage.

[0026] Here, electromagnetic induction, magnetic resonance, electrolytic coupling, and electromagnetic wave methods are known as wireless power supply methods. Of these, the Qi standard, which uses electromagnetic induction, is an international standard for wireless charging and is currently used in many smartphones. Furthermore, electromagnetic induction wireless power supply devices can be realized in a small size and at low cost. They are also suitable for transmitting relatively large amounts of power over short distances and can wirelessly supply enough power to charge devices with power consumption similar to that of mobile devices such as smartphones. On the other hand, electromagnetic induction has the disadvantage of a short power transmission distance (about a few millimeters to 10 centimeters), making it difficult to transmit power over a wide area of ​​a living space.

[0027] Another method that allows for long-distance power transmission is the electromagnetic wave method. The electromagnetic wave method converts electric current into electromagnetic waves (microwaves, lasers) at the transmitting end and transmits them, and the receiving end receives the electromagnetic waves from an antenna and converts them into DC current using a rectifier circuit. This method uses an electromagnetic field to transmit power and has the advantage of long power transmission distances (several meters). On the other hand, the electromagnetic wave method has the disadvantage of poor power transmission efficiency, making it difficult to transmit large amounts of power. In other words, it is difficult to directly charge devices with power consumption levels similar to smartphones, such as mobile devices, using the electromagnetic wave method. Furthermore, outputting high-power electromagnetic waves (wireless signals) over long distances is undesirable because it requires consideration of the impact on other wireless devices and the human body.

[0028] Therefore, this wireless power supply system combines an electromagnetic induction type wireless power supply device 51 and an electromagnetic wave type wireless power supply device 41 to construct a wireless power supply system capable of wirelessly charging mobile devices such as smartphones 71.

[0029] As shown in Figure 1, an electromagnetic wave wireless power supply device 41 (first wireless power supply device) is installed approximately in the center of the ceiling of the living space 3. It is preferable to install the electromagnetic wave wireless power supply device 41 in a position that oversees the entire living space 3 so that electromagnetic waves can be transmitted to any location in the living space 3 (over as wide an area as possible). In this embodiment, it is installed in the center of the ceiling, but it may also be installed on a wall. The electromagnetic wave wireless power supply device 41 (first wireless power supply device) is electrically connected to the solar battery 31 (solar panel 11) via the power conditioner 21, and unless a switching operation (power off or electromagnetic wave transmission off) is intentionally performed by turning off a switch (changeover switch), power is supplied at all times and electromagnetic waves for power supply are output at all times.

[0030] The electromagnetic wave wireless power supply device 41 is continuously driven using the power of the solar battery 31 to output electromagnetic waves. This is because electromagnetic wave wireless power supply cannot transmit large amounts of power and can only transmit small amounts of power (less than 1W). For example, if the operating time (power supply time) of the electromagnetic wave wireless power supply device 41 and the operating time (power supply time) of the electromagnetic induction wireless power supply device 51 are the same, the charging of the electromagnetic induction wireless power supply device 51 (battery 53) will not keep up, the power will run out, and the electromagnetic induction wireless power supply device 51 will not be able to be driven. Therefore, the weakness of being able to transmit only small amounts of power is covered by continuously driving the electromagnetic wave wireless power supply device 41 and transmitting power for a longer time than the operating time of the electromagnetic induction wireless power supply device 51 to constantly charge the battery 53.

[0031] Furthermore, an electromagnetic induction type wireless power supply device 51 (second wireless power supply device) is installed on a table 61 placed on the floor of the living space 3. This electromagnetic induction type wireless power supply device 51 has a storage battery 53 (power storage unit). The storage battery 53 of the electromagnetic induction type wireless power supply device 51 is wirelessly powered (wirelessly charged) by electromagnetic waves 42 (wireless power supply) that are constantly output from the electromagnetic wave type wireless power supply device 41. In addition, each of the three (multiple) tables installed in the living space 3 has an electromagnetic induction type wireless power supply device 51 (second wireless power supply device) with a storage battery 53 installed on it. The electromagnetic wave type wireless power supply device 41 wirelessly supplies power to the storage batteries 53 of these multiple electromagnetic induction type wireless power supply devices 51 simultaneously or sequentially by electromagnetic waves (wireless power supply) that it constantly outputs.

[0032] Users who wish to charge their mobile devices, such as smartphones 71, can wirelessly charge their devices simply by placing them on the designated position on top of the electromagnetic induction wireless power supply device 51 for a predetermined time while enjoying a drink at the cafe. This allows users to charge their smartphones 71 to some extent while they are at the cafe, even if the battery level of their smartphones 71 is low (or completely depleted), and to pay for their drinks and other services at the cafe using electronic payment via their smartphones 71.

[0033] Furthermore, from the store's perspective, it allows them to provide mobile device charging facilities in a flexible layout without incurring significant costs, and makes it easy for users to charge their smartphones even if they run out of power while making electronic payments. This also helps to resolve problems that can occur during electronic payments, such as smartphones running out of battery.

[0034] In this wireless power supply system 1, the electricity generated using the solar panel 11 (electricity from solar power generation) is used as the power source (main power) for the wireless power supply device. Therefore, it is possible to provide a wireless power supply system that is primarily based on clean energy and has a low environmental impact (friendly to the global environment).

[0035] Furthermore, while this wireless power supply system 1 can operate independently using only electricity generated by solar power, the power conditioner and battery may be connected to a commercial AC power source via power cables to stabilize operation. It may also be equipped with a monitoring and control unit that monitors the amount of power generated by the solar panel 11 and the remaining charge of the solar battery 31, as well as a monitor that allows visual confirmation of these amounts. These may also be connected to a commercial AC power source via power cables. Additionally, since the solar power generation capacity of the solar panel 11 decreases significantly during severe weather, the system may be configured to switch from storing power in the solar battery 31 to storing power from a commercial AC power source in such cases. Furthermore, the electromagnetic wave wireless power supply device 41 may be directly supplied with power from a commercial AC power source. The wireless power supply system 1 of the present invention may also be adopted in stores that accept payment by cash or other means in addition to electronic payment.

[0036] Figure 2 is a block diagram of the wireless power supply system 1. Power is supplied wirelessly from the upper block to the middle block, and from the middle block to the lower block. The upper block has the aforementioned solar panel 11, power conditioner 21, solar battery 31, and electromagnetic wave wireless power supply device 41, as well as a transmission circuit and control unit which are not shown. The electromagnetic wave wireless power supply device 41 also has a transmitting antenna 43 for transmitting electromagnetic waves, and transmits electromagnetic waves 42 from this transmitting antenna 43 to the receiving antenna 52 of the electromagnetic induction wireless power supply device 51 (assuming a distance of 2m to 5m between the antennas, and using a frequency band of, for example, 5.7GHz for the electromagnetic waves).

[0037] The middle block consists of an electromagnetic induction type wireless power supply device 51, which will be described later. The electromagnetic induction type wireless power supply device 51 has a receiving antenna 52 for receiving electromagnetic waves transmitted from the electromagnetic induction type wireless power supply device 41. It also has a receiving circuit and control unit (not shown) that receive electromagnetic waves from the receiving antenna 52 and convert them into DC current. The electromagnetic induction type wireless power supply device 51 is also provided with two power switches SW1 and SW2. The electromagnetic induction type wireless power supply device 51 comprises a power storage unit having a storage battery 53 and a power transmission unit having a power transmission coil 54 that performs electromagnetic induction type wireless power supply.

[0038] The power switch 1SW1 (first switch) can switch the power of the storage unit ON or OFF, and the power switch 2SW2 (second switch) can switch the power of the transmission unit ON or OFF. This is to minimize the power consumption of the electromagnetic induction type wireless power supply device 51 by keeping the power supply of the storage unit ON at all times for continuous storage, and by making it possible to turn off the power supply of the transmission unit when not supplying power to a smartphone or the like. This makes it possible to minimize the power consumption of the electromagnetic induction type wireless power supply device 51. In addition, this makes it possible to compensate for the fact that the amount of power supplied per unit time of the electromagnetic wave type wireless power supply device 41 is small, that is, the capacity to charge the storage battery of the electromagnetic induction type wireless power supply device 51 is low.

[0039] As mentioned above, this wireless power supply system 1 is configured such that the time it takes for the electromagnetic wave type wireless power supply device 41 to supply power to the electromagnetic induction type wireless power supply device 51 is longer than the time it takes for the electromagnetic induction type wireless power supply device 51 to supply power to the mobile device. The electromagnetic induction type wireless power supply device 51 supplies power only when the mobile device is placed in the set position.

[0040] Furthermore, by turning on the power to the power storage unit, it becomes possible to receive (take) power transmitted from the electromagnetic wave type wireless power supply device 41 and store it. Also, by turning on the power to the power transmission unit, an induced current 57 is generated between the power transmission coil 54 of the electromagnetic induction type wireless power supply device 51 and the power receiving coil 72 of the smartphone 71 placed in the designated area, making it possible to charge the battery 73 (power storage unit) of the smartphone 71.

[0041] The lower block shows a smartphone 71, and the smartphone 71 usable with this wireless power supply system is an electromagnetic induction type wireless power supply compatible device (mobile device) that has a power receiving coil 72, a storage battery 73, a control unit 74 for various controls, etc. inside.

[0042] Next, Figure 3 will be used to specifically explain the electromagnetic induction type wireless power supply device 51 and wireless power supply to the smartphone 71. As shown in Figure 3(a), the electromagnetic induction type wireless power supply device 51 is a rectangular box-shaped (cuboid-shaped) device. In Figure 3(a), the box section (power transmission section) on the left side of the paper, which is marked with a double square, houses the power transmission coil 54, which is the main component of the electromagnetic induction type wireless power supply device 51, and a power transmission circuit (not shown). The box section (energy storage section) on the right side of the paper, which is marked with an antenna, houses a receiving antenna 52 for receiving electromagnetic waves from the electromagnetic wave type wireless power supply device 41, a receiving circuit (not shown), and a battery 53 for converting the received electromagnetic waves into electric current and storing energy.

[0043] Furthermore, the power switch 56 (second switch) is a switch that can turn the power on or off on the power transmission unit side. Also, the power switch 55 (first switch) is a switch that can turn the power on or off on the power storage unit side. Note that if the power on the power storage unit side is turned off, the power on the power transmission unit side will also be automatically turned off.

[0044] Figure 3(b) shows the electromagnetic induction wireless power supply 51 shown in Figure 3(a) installed in a storage recess 64 formed on the upper surface of the table 61. The storage recess 64 is formed to be approximately the same shape as the electromagnetic induction wireless power supply 51 (slightly larger in size), and is shaped to fit the entire electromagnetic induction wireless power supply 51. Furthermore, when the electromagnetic induction wireless power supply 51 is fitted (installed) in the storage recess 64, the upper surface of the electromagnetic induction wireless power supply 51 and the upper surface of the table 61 are configured to be approximately flush.

[0045] Furthermore, if a user 63 wants to charge their mobile device such as a smartphone 71, they first turn ON both the power switches 55 and 56 of the electromagnetic induction wireless power supply 51. Then, by placing the smartphone 71 so that its receiving coil 72 is positioned on the top (set position) of the "box section with the double square pattern" on the left side of Figure 3(a) (placing the smartphone 71 at the set position on the table) (placing it at the position shown by the dashed line in Figure 3(b)), it will automatically start charging. When charging is finished, it is desirable to turn OFF only the power switch 56 of the electromagnetic induction wireless power supply 51 (leaving the power switch 55 ON). This reduces the power consumption of the electromagnetic induction wireless power supply section (transmitting coil 54, etc.) of the electromagnetic induction wireless power supply 51, while the storage section (storage battery 53, receiving antenna 52, etc.) continues to receive power from the electromagnetic wave wireless power supply device 41. This improves the charging efficiency of the storage battery 53 and minimizes the possibility of the storage battery 53 running out of power.

[0046] Furthermore, the box section (power storage section) with the antenna design is positioned on the table surface to more efficiently receive the electromagnetic waves 42 transmitted by the electromagnetic wave wireless power supply device 41 installed on the ceiling. Also, since the receiving antenna 52 is positioned at the top inside the box section, it is possible to receive the electromagnetic waves 42 transmitted by the electromagnetic wave wireless power supply device 41 more efficiently. Figure 3(c) is a side view of the table 61 with the electromagnetic induction wireless power supply device 51 installed and the smartphone 71 placed at the set position 81. The area indicated by the shaded lines is the set position 81, and by positioning the receiving coil 72 of the smartphone 71 within this area, it is possible to charge it more efficiently.

[0047] Next, using Figure 4, we will explain an embodiment in which the wireless power supply system 100 is installed in the same living space 3 as described above, but with a different table layout. In the embodiment shown in Figure 4, multiple (four) tables 61 are joined together to create a table layout that can be used by a group of many people (for example, eight people). Since there are no cables on the tables 61 on which the electromagnetic induction type wireless power supply device 51 capable of charging smartphones is installed, it is possible to easily change the layout to any desired one without worrying about wiring while maintaining the charging function. In addition, the store can freely change the table layout at any time, either at the request of the user or at the store's convenience, while maintaining the charging function.

[0048] Furthermore, the rechargeable battery 53 (charging unit), which serves as the power source for the electromagnetic induction type wireless power supply device 51, is automatically wirelessly charged by the electromagnetic wave type wireless power supply device 41 (first wireless power supply device), eliminating the need for battery replacement or charging via cable. Thus, by introducing this wireless power supply system, it becomes possible to obtain a great many advantages (benefits).

[0049] Furthermore, in the configuration shown in Figure 4, unlike in Figure 1, two mounting rails 44 (mounting members) are installed parallel to each other on the ceiling, and the electromagnetic wave type wireless power supply device 41 (first wireless power supply device) is attached via the mounting rails 44, making it possible to move (slide) the electromagnetic wave type wireless power supply device 41 to any position on the mounting rails 44. This allows the electromagnetic wave type wireless power supply device 41 to be moved in accordance with changes in the layout of the table 61, and improves the transmission and reception efficiency of electromagnetic waves 42 between the electromagnetic wave type wireless power supply device 41 and the electromagnetic induction type wireless power supply device 51. This makes it possible to minimize the possibility of the stored power of the rechargeable battery 53 of the electromagnetic induction type wireless power supply device 51 running out.

[0050] Furthermore, as shown in Figure 4, multiple electromagnetic wave wireless power supply devices 41 may be attached to the mounting rail 44 on the ceiling. Also, each of these multiple electromagnetic wave wireless power supply devices 41 may be independently movable to any position on the mounting rail 44. This increases the ability of the electromagnetic wave wireless power supply devices 41 to supply power to the battery 53 of the electromagnetic induction wireless power supply device 51, thereby minimizing the possibility of the battery 53 of the electromagnetic induction wireless power supply device 51 running out of power.

[0051] As mentioned above, the electromagnetic wave wireless power supply device 41 continuously (for a long time) transmits weak electromagnetic waves that do not affect the human body over a long distance to a wide area of ​​the living space 3. The electromagnetic waves are received by the electromagnetic induction wireless power supply device 51, converted into electric current, and stored in the power storage unit 53. This electromagnetic induction wireless power supply device 51 has a power supply output level that can charge a mobile device (smartphone 71), and although its power consumption is high, its usage time is short.

[0052] This makes it possible to easily charge mobile devices such as smartphones used for electronic payments, which have been increasing in recent years, even if their power level drops while receiving services at a cafe, etc., thus eliminating the problem of the smartphone 71 running out of power and being unable to make electronic payments for services. Furthermore, since the objective of the present invention is to raise or maintain the charge level of the smartphone 71 to a level at which electronic payments are possible, it is not necessary to fully charge it. [Examples]

[0053] Next, the wireless power supply system 200 of Embodiment 2 will be described with reference to Figures 5 to 8. The wireless power supply system 200 of Embodiment 2 is a system that combines multiple wireless power supply devices with different wireless power supply capabilities (wireless power supply mechanisms) to wirelessly charge mobile devices such as smartphones used by the user at a set location in the living space, and its configuration is the same as that of Embodiment 1. Also, similar to Embodiment 1, Embodiment 2 provides a charging area 111 (also called a charging position, charging area, specific position, predetermined position, or set position) on the table 103 that can wirelessly charge devices such as smartphones 71 (mobile devices). Since this table 103 is not connected to a commercial AC power supply (its movement and installation location are not restricted by cables), it is possible to lay out the table 103 at any position in the living space (on the floor).

[0054] This allows stores to arrange tables, chairs, and other equipment in any layout they prefer, without having to consider the routing of wiring. Furthermore, since there is no need to consider the routing of wiring connected to the trademark power supply when creating the layout, costs can be reduced both for the initial layout and for layout changes.

[0055] In the wireless power supply system 1 of Embodiment 1, the electromagnetic wave wireless power supply device 41 was placed on the ceiling of the living space 3, which has a clear view of the entire living space, in order to efficiently wirelessly supply power to the battery 53 of the electromagnetic induction wireless power supply device 51 installed on a table in the living space 3. In contrast, in the wireless power supply system 200 of Embodiment 2, the electromagnetic wave wireless power supply device 41 was placed on the floor in a one-to-one relationship with the electromagnetic induction wireless power supply device 51 installed on the table 103. This limits the output range of the electromagnetic waves emitted from the electromagnetic wave wireless power supply device 41 toward the electromagnetic induction wireless power supply device 51, thereby minimizing the impact on people (users) around the table and electronic devices placed in the living space 3.

[0056] Figure 5 is a schematic diagram showing a portion of the exterior and a portion of the interior of the living space 3 of the structure 2 which operates a cafe (coffee shop) equipped with the wireless power supply system 200 of Example 2. Parts common to Example 1 will not be explained. As shown in Figure 5, an underfloor space 102 is provided below the floor 101, and the underfloor space 102 is divided into multiple underfloor space areas. That is, multiple underfloor spaces 102a to 102e, each divided into predetermined sizes, are provided under the floor.

[0057] An electromagnetic wave wireless power supply device 41 (first wireless power supply device) can be mounted in the underfloor space 102 (underside of the floor material) via a mounting part 115. The electromagnetic wave wireless power supply device 41 is also mounted in the underfloor space 102 vertically below the (power storage part) of the electromagnetic induction wireless power supply device 51 (second wireless power supply device) which is attached to the base of the table 103. In the table layout shown in Figure 5, three two-seater tables 103 are placed side by side at a predetermined distance apart. The electromagnetic wave wireless power supply devices 41 are installed in three locations in the underfloor spaces 102a, 102c, and 102e, which are vertically below the electromagnetic induction wireless power supply devices 51 provided on these three tables 103.

[0058] As will be described in more detail later, electromagnetic waves 110 for wireless power supply are output upward from the electromagnetic wave wireless power supply device 41. The electromagnetic wave output area 108 where these electromagnetic waves are output is surrounded on the sides by the legs 105 of the table 103 and its top surface is surrounded by the table base 104. The legs 105 are also provided with an intrusion prevention part 106 to prevent the user's feet from entering the electromagnetic wave output area 108, and an electromagnetic wave shielding member 107 to prevent the electromagnetic waves 110 from being output outward from the electromagnetic wave output area 108 (the area surrounded by the legs). The electromagnetic wave shielding member 107 is made of a metal plate-like member. Furthermore, below the top surface 104a (mounting surface) of the base 104, an electromagnetic wave shielding member 107 is provided to cover the upper part of the electromagnetic wave output area 108.

[0059] Thus, the electromagnetic wave output area 108 is structured in such a way that all sides surrounding the electromagnetic wave wireless power supply device 41, excluding the surface on which the electromagnetic wave wireless power supply device 41 is installed, and the upper surface are covered with electromagnetic wave shielding members 107, thereby preventing electromagnetic waves from being output (leaking) outside the electromagnetic wave output area 108. This prevents electromagnetic waves output from the electromagnetic wave wireless power supply device 41 in order to wirelessly power the electromagnetic induction wireless power supply device 51 from flying around the living space and adversely affecting users in the living space or electronic devices placed in the living space.

[0060] In this way, the electromagnetic wave wireless power supply device 41 can be installed at different locations in the underfloor space (underfloor space 102a to 102e) depending on the table layout. Furthermore, since there is no wiring on the table 103, there is no need to create a complicated wiring layout, resulting in a clean appearance and allowing for flexible table layouts. In addition, the legs 105, intrusion prevention part 106, and electromagnetic wave shielding member 107 of the table 103 may be provided as separate components, or some or all of them may be combined.

[0061] Furthermore, the electromagnetic wave wireless power supply device 41, which is installed in the underfloor space, is connected to the power cable 12 in the underfloor space 102 and is constantly supplied with stable power from the commercial power supply or the aforementioned solar battery 31. In addition, the electromagnetic induction wireless power supply device 51 is not connected to the commercial power supply or the solar battery 31, and is configured to be charged wirelessly by the electromagnetic wave wireless power supply device 41.

[0062] Next, the structure of the table 103 used in the wireless power supply system 200 of Embodiment 2 will be explained using Figure 6. Figure 6(a) shows the base portion 104 of the table 103. This is a diagram of the base portion 104 with the base portion 104 and the leg portion 105 separated. The shape of the top surface 104a of the table 104 is approximately square, and by attaching multiple tables together and arranging them adjacently, it is possible to create a table of any size. In addition, although not shown in the diagram, mounting recesses (Figure 7) are formed on the underside of the base portion 104 for attaching the electromagnetic induction type wireless power supply device 51 (second wireless power supply device), electromagnetic wave shielding member 107, and leg portion 105 to the base portion 104.

[0063] As will be explained in more detail later, electromagnetic waves for wireless power supply are output from the electromagnetic wave type wireless power supply device 41 toward the electromagnetic induction type wireless power supply device 51 installed in the mounting recess 104b of the base 104. That is, electromagnetic waves are output from the electromagnetic wave type wireless power supply device 41 vertically upward. To prevent these electromagnetic waves from penetrating the base 104 and being output into the living space 3, an electromagnetic wave shielding member 107 is attached to the mounting recess 104b so as to surround the upper part of the electromagnetic wave output area 108 (see Figure 7).

[0064] Figure 6(b) shows the legs 105 of the table 103. This figure shows the legs 105 separated from the base 104. As shown in Figure 6(b), the legs are made of four rectangular plates combined to form a hollow rectangular parallelepiped with openings at the top and bottom. The sides are made of plate-like members to eliminate gaps and prevent the feet of a user seated in a chair from entering the electromagnetic wave output area when electromagnetic waves are being output from the electromagnetic wave wireless power supply device 41.

[0065] The legs 105 that support the base 104 (table 103) also serve as intrusion prevention members 106. In this embodiment 2, the legs are made of a plate-like member to ensure that parts of the user's body, such as feet, do not enter. Instead of this configuration, a fence-like or net-like configuration made of multiple rod-like members may be used. In that case, the gaps must be made large enough to prevent feet from entering. Both the base 104 and the legs 105 are made of wood. Alternatively, instead of wood, they may be made of a transparent resin so that the electromagnetic wave output area 108 can be seen from the outside.

[0066] Furthermore, an electromagnetic wave shielding member 107 is installed on the inside of the leg portion 105 so as to surround the lateral perimeter of the electromagnetic wave output area 108. The electromagnetic wave shielding member 107 is a sheet-like metal material (for example, an aluminum sheet) and is configured to prevent electromagnetic waves output from the electromagnetic wave wireless power supply device 41 from being output (leaking) outwards (into the living space 3) from the electromagnetic wave output area 108 (the inner area surrounded by the leg portion 105, the base portion 104, and the floor 101). This makes it possible to minimize the adverse effects of electromagnetic waves on users in the living space and on equipment installed in the living space. The electromagnetic wave shielding member 107 may also be made of a fine mesh.

[0067] Figure 6(c) shows the table 103 constructed by combining the base 104 and the legs 105. A charging area 111 is provided approximately in the center of the top surface 104a, and an electromagnetic induction type wireless power supply device 51 (power transmission coil 54, etc.) is installed on the underside of the base 104 of this charging area 111. Users can wirelessly charge devices such as smartphones by placing them on this charging area 111.

[0068] Figure 7 is a schematic diagram showing the xx cross-section of Figure 6(c). Figure 7(a) shows the xx cross-section of the table 103 when the electromagnetic induction wireless power supply device 51 and the electromagnetic wave shielding member 107 are not attached to the table 103. The electromagnetic induction wireless power supply device 51 and the electromagnetic wave shielding member 107 are attached to the mounting recess 104, and the electromagnetic wave shielding member 107 is also attached to the inner surface of the leg portion 105.

[0069] Figure 7(b) shows a cross-section of a table 103 with an electromagnetic induction wireless power supply device 51 and an electromagnetic wave shielding member 107 attached to it, positioned vertically above the floor 101 on which the electromagnetic wave wireless power supply device 41 is installed. As shown in Figure 7(b), the aforementioned electromagnetic wave shielding member 107 and the electromagnetic induction wireless power supply device 51 are attached to the mounting recess 104b on the underside of the base portion 104 of the table 103. Here, the electromagnetic induction wireless power supply device 51 is separated into a power storage unit (receiving antenna 52, battery 53) and a power supply unit (transmission coil, power transmission circuit, etc.). The power storage unit (battery 53, etc.) of the electromagnetic induction wireless power supply device 51 is attached below the electromagnetic wave shielding member 107 (inner region of the electromagnetic wave output area), and the power supply unit (transmission coil 54, etc.) of the electromagnetic induction wireless power supply device 51 is attached above the electromagnetic wave shielding member 107 (outer region of the electromagnetic wave output area).

[0070] The storage unit (battery 53, etc.) of the electromagnetic induction wireless power supply device 51 needs to efficiently receive and store the electromagnetic waves output by the electromagnetic wave wireless power supply device 41. Therefore, the storage unit of the electromagnetic induction wireless power supply device 51 needs to be installed inside the electromagnetic wave output area 108. On the other hand, the power supply unit (transmitting coil 54, etc.) of the electromagnetic induction wireless power supply device 51 generates an induced current 57 between the transmitting coil 54 and the device-side receiving coil, enabling it to charge the device-side battery 73 (storage unit). Therefore, if there is an electromagnetic wave shielding member 107 between the power supply unit of the electromagnetic induction wireless power supply device 51 and the device's storage unit, the device cannot be charged efficiently. Consequently, the power supply unit of the electromagnetic induction wireless power supply device 51 needs to be installed outside the electromagnetic wave output area 108.

[0071] Therefore, in this embodiment 2, the electromagnetic induction type wireless power supply device 51 is separated into a power storage unit (receiving antenna 52, storage battery 53) and a power supply unit (transmission coil, power transmission circuit, etc.), and the electromagnetic wave shielding member 107 is sandwiched between the power storage unit and the power supply unit, with the power storage unit side positioned inside the electromagnetic wave output area 108 and the power supply unit side outside the electromagnetic wave output area 108 (see Figure 7(b)). The power storage unit and the power supply unit of the electromagnetic induction type wireless power supply device 51 are electrically connected by a harness and connector.

[0072] The power supply unit of the electromagnetic induction type wireless power supply device 51 is mounted via a mounting part 114 to a mounting recess 104 in the outer region of the electromagnetic wave output area 108. Next, a sheet-like electromagnetic wave shielding member 107 is attached to the mounting recess 104, and then the power storage unit of the electromagnetic induction type wireless power supply device 51 is mounted via a mounting part 113 to a mounting recess 104 in the inner region of the electromagnetic wave output area 108. The electromagnetic wave shielding member 107 is attached to the inside of the leg portion 105.

[0073] The floor 101 has an opening / closing section 101a and a fixed section 101b, and by lifting the opening / closing section 101b upward, the underfloor space 102 can be accessed. In addition, an electromagnetic wave wireless power supply device 41 can be attached to the back side of the opening / closing section 101b of the floor 101 via a mounting section 115. Furthermore, the floor 101 is provided with multiple opening / closing sections 101b (see Figure 8(b)), and the electromagnetic wave wireless power supply device 41 can be attached to one or more opening / closing sections 101b at any position depending on the layout of the table 103. The table layout can be done arbitrarily, but the electromagnetic wave wireless power supply device 41 should be positioned in the center of the electromagnetic wave output area 108 and vertically below the electromagnetic induction wireless power supply device 51. This makes it possible to prevent the electromagnetic waves output by the electromagnetic wave wireless power supply device 41 from leaking outside the electromagnetic wave output area 108 as much as possible.

[0074] Figure 8(a) shows an embodiment of the wireless power supply system 200 of Embodiment 2, with a modified layout of the table 103. In the embodiment of Figure 8(a), the number of tables 103 arranged in a row is reduced from three to two, the electromagnetic wave wireless power supply device 41 is placed in the underfloor space 102b and underfloor space 102d, and the table 103 is laid out on top of the underfloor space 102b and underfloor space 102d. In this way, the wireless power supply system 200 of Embodiment 2 allows the wireless table 103, which is not connected to a trademark power supply, to be set to any layout. Compared to Embodiment 1, the wireless power supply system 200 of Embodiment 2 is configured to minimize the output of electromagnetic waves outside the electromagnetic wave output area 108, even when transmitting relatively strong electromagnetic waves, thus minimizing the impact on the human body and other equipment, and enabling safe operation.

[0075] Figure 8(b) is a plan view of the floor 101 as seen from above. The floor surface is provided with 15 opening / closing sections 101a, and the table 103 can be freely arranged according to the positions of these opening / closing sections 101a.

[0076] [Other forms] Furthermore, in the configuration described above, one electromagnetic wave wireless power supply device (first wireless power supply device) may supply power to multiple (two or more) electromagnetic induction wireless power supply devices (second wireless power supply device (or its energy storage unit)). Also, in the configuration described above, a table on which the electromagnetic induction wireless power supply device (second wireless power supply device) is installed (wireless power supply table) can be freely arranged (moved) in the living space. The mounting member on which the electromagnetic wave wireless power supply device (first wireless power supply device) is installed may be configured to allow adjustment of the angle (downward to the right relative to the ceiling, downward to the left, downward towards the front, downward towards the back, or a combination of these) and position (sliding movement) of the electromagnetic wave wireless power supply device (first wireless power supply device). This makes it possible to adjust the direction of transmission of electromagnetic waves to improve the efficiency of power supply and improve charging efficiency (energy storage efficiency). Furthermore, the electromagnetic induction type wireless power supply device (second wireless power supply device) is positioned such that the power receiving section of the power storage unit is located on the table surface. This makes it possible to improve charging efficiency.

[0077] In this embodiment, power to the electromagnetic wave wireless power supply device (first wireless power supply device) was supplied by photovoltaic power generation (solar power generation) using a solar panel. Alternatively, the electromagnetic wave wireless power supply device (first wireless power supply device) may be connected to a commercial AC power source via a wired connection (power line) to provide operating power. Furthermore, the electromagnetic wave wireless power supply device may be connected to both power generated by the solar panel (solar battery) and a commercial AC power source, prioritizing the use of power from the solar panel, while also monitoring the remaining power level of the solar battery and switching to the commercial AC power source when the power level drops (having a power switching means). In addition, such power source switching control may be performed automatically with a power level monitoring means.

[0078] Similarly, electromagnetic induction wireless power supply devices may also be provided with a connection port that can be electrically connected to a commercial AC power source. If a problem occurs with the electromagnetic wave wireless power supply device, the power level of the solar battery decreases, or the power level of the storage unit of the electromagnetic induction wireless power supply device decreases, and it is not possible to properly charge a smartphone or the like, the device may be switched to power from the commercial AC power source (having a power switching means). Furthermore, such power source switching control may be performed automatically with a power level monitoring means.

[0079] Furthermore, the electromagnetic induction type wireless power supply device 51 is equipped with monitoring means to monitor the remaining charge (amount of charge) of the battery 53, and if the amount of charge of the battery 53 exceeds a predetermined amount (when it is determined to be fully charged), the power supply (electromagnetic wave transmission) of the electromagnetic wave type wireless power supply device 41 may be turned off. Furthermore, the electromagnetic wave type wireless power supply device 41 may be equipped with transmission control means to switch the electromagnetic wave transmission on or off.

[0080] Furthermore, the battery (storage unit) of the electromagnetic induction wireless power supply device may be made into a removable cartridge type, allowing it to be replaced when fully charged or when the charge is depleted. Also, in the embodiments 1 and 2 described above, an embodiment was described in which the battery of the electromagnetic induction wireless power supply device attached to the table 103 is wirelessly charged (powered wirelessly) by an electromagnetic wave wireless power supply device. Alternatively, or in addition to this, by making the power unit of the battery (storage unit) of the electromagnetic induction wireless power supply device into a removable cartridge type, a system for wirelessly charging mobile devices, etc., without complicated wiring can be provided simply by installing the table 103 to which the electromagnetic induction wireless power supply device is attached (even without an electromagnetic wave wireless power supply device).

[0081] Furthermore, the electromagnetic wave wireless power supply device may wirelessly supply power (wireless charging) to the electromagnetic induction wireless power supply device at night or outside of business hours when users are not using the facility. This further reduces the possibility that electromagnetic waves emitted from the electromagnetic wave wireless power supply device may have adverse effects on the human body of users or store employees. Additionally, an automatic control function may be adopted that stops the electromagnetic wave wireless power supply device from wirelessly supplying power to the electromagnetic induction wireless power supply device when it detects the presence of a user or human body (for example, sitting in a chair or approaching a table).

[0082] Furthermore, in the embodiment of Embodiment 2, the electromagnetic wave type wireless power supply device is placed on the floor vertically below the electromagnetic induction type wireless power supply device, thereby shortening the radio wave transmission distance and improving the efficiency of radio wave transmission and reception compared to when the electromagnetic wave type wireless power supply device is placed on the ceiling. Alternatively, or in addition to such embodiments, the electromagnetic induction type wireless power supply device may be placed on the floor surface, installed on the floor diagonally below (above or below the floor) rather than vertically below, or positioned below the tabletop of a wall-mounted table. This also allows for a shorter distance between the electromagnetic induction type wireless power supply device and the electromagnetic wave type wireless power supply device compared to when the electromagnetic wave type wireless power supply device is installed on the ceiling, and enables safe and efficient wireless power supply to devices without unnecessarily transmitting electromagnetic waves into the living space.

[0083] Furthermore, while silicon-based solar panels 11 were used in the aforementioned Examples 1 and 2 to generate solar power, organic thin-film solar cells (OPVs), dye-sensitized solar cells (DSSCs), or perovskite solar cells may be used instead of solar panels 11. Additionally, using flexible sheet-shaped solar cells allows them to be mounted on walls or glass surfaces, enabling more efficient solar power generation.

[0084] [others] Simply providing a battery-powered wireless power supply device is inconvenient because it requires recharging or replacing the battery when it runs out of power. This reference invention provides a system that can safely and efficiently supply power wirelessly to mobile devices such as smartphones at any location within a living space. It also provides a wireless power supply system that allows for easy and flexible layout within a living space.

[0085] [Reference Invention Mark] The wireless power supply system of Reference Invention 1-1 is A wireless power supply system capable of supplying power to a mobile device at a specific location in a living space, A first wireless power supply device capable of supplying power wirelessly, The device includes a second wireless power supply unit that has a power storage unit capable of receiving power from the first wireless power supply unit and storing said power, and that can wirelessly supply power to the mobile device using the power from the power storage unit, The distance over which the first wireless power supply device can supply power to the second wireless power supply device is longer than the distance over which the second wireless power supply device can supply power to the mobile device. The amount of power per unit time that the second wireless power supply device can supply to the mobile device is greater than the amount of power per unit time that the first wireless power supply device can supply to the second wireless power supply device. The power storage unit of the second wireless power supply device stores power by receiving a constant power supply from the first wireless power supply device, and the second wireless power supply device wirelessly supplies power to the mobile device using the power of the power storage unit when the mobile device is placed at the specified location. It is characterized by the following:

[0086] This wireless power supply system comprises a first wireless power supply device capable of supplying power wirelessly and a second wireless power supply device capable of supplying power wirelessly. Furthermore, the first wireless power supply device has a longer wireless power transmission distance than the second wireless power supply device, and the second wireless power supply device has a larger power transmission capacity per unit time than the first wireless power supply device. By utilizing the respective advantages of the first and second wireless power supply devices, which have different wireless power transmission capabilities, it is possible to safely and efficiently wirelessly supply power to mobile devices at specific locations in living spaces.

[0087] Furthermore, the wireless power supply system of Reference Invention 1-2 is, in the wireless power supply system of Reference Invention 1-1, The first wireless power supply device is an electromagnetic wave type wireless power supply device, The second wireless power supply device is characterized by being an electromagnetic induction type wireless power supply device.

[0088] In this type of wireless power supply system, the first wireless power supply device uses an electromagnetic wave method, and the second wireless power supply device uses an electromagnetic induction method. By utilizing the respective advantages of the first and second wireless power supply devices, which have different wireless power transmission capabilities, it becomes possible to safely and efficiently wirelessly supply power to mobile devices at specific locations within a living space.

[0089] Furthermore, the wireless power supply system of Reference Invention 1-3 is, in the wireless power supply system of Reference Invention 1-1 or Reference Invention 1-2, A table is provided in the aforementioned living space, and the aforementioned specific location is a location on the table. The first wireless power supply device is installed directly on the wall or ceiling surface of the living space or via an installation member. The second wireless power supply device is characterized by being installed below the specific position on the table.

[0090] In this wireless power supply system, the first wireless power supply device is installed on the wall or ceiling of the living space, and the second wireless power supply device is installed below a specific position on a table placed in the living space. This allows the first wireless power supply device to be installed in a position that facilitates the transmission of electromagnetic waves throughout almost the entire living space (for example, on the ceiling or upper part of the wall), and wireless power is supplied from the first wireless power supply device to the power storage unit of the second wireless power supply device installed on the table. Furthermore, this enables safe and efficient wireless power supply from the first wireless power supply device to the second wireless power supply device, and enables wireless power supply to mobile devices at a specific position in the living space.

[0091] According to this reference invention, it is possible to safely and efficiently wirelessly power mobile devices within a living space using multiple wireless power supply devices with different wireless power transmission capabilities.

[0092] [Reference Invention 2] This reference invention 2 provides a system that safely and efficiently supplies power wirelessly to a device such as a smartphone at any location within a living space.

[0093] The wireless power supply system of Reference Invention 2-1 is A wireless power supply system capable of supplying power to a device by placing the device on a designated position on a storage stand arranged in a living space, A first wireless power supply device capable of supplying power wirelessly, The device includes a second wireless power supply unit that has a power storage unit capable of receiving power from the first wireless power supply unit and storing said power, and that can wirelessly supply power to the device using the power from the power storage unit, The aforementioned storage stand comprises a base portion having a mounting surface on which the device can be placed, The distance over which the first wireless power supply device can supply power to the second wireless power supply device is longer than the distance over which the second wireless power supply device can supply power to the device. The second wireless power supply device is provided on the base portion of the storage stand, The first wireless power supply device is provided below the second wireless power supply device which is provided on the base portion of the storage stand, The power storage unit of the second wireless power supply device stores power supplied from the first wireless power supply device, and when the device is placed in the predetermined location, the second wireless power supply device wirelessly supplies power to the device using the power from the power storage unit. It is characterized by the following:

[0094] Such a wireless power supply system includes a platform on which a device can be placed, a first wireless power supply device capable of supplying power wirelessly, and a second wireless power supply device capable of supplying power wirelessly. The first wireless power supply device has a longer wireless power transmission distance than the second wireless power supply device. The second wireless power supply device is located on the upper part of the platform, and the first wireless power supply device is located below the second wireless power supply device. The power storage unit of the second wireless power supply device receives power from the first wireless power supply device and stores it, enabling the second wireless power supply device placed on the platform to be powered wirelessly.

[0095] This configuration leverages the strengths of both the first and second wireless power supply devices, which have different wireless power transmission capabilities. Furthermore, by installing the second wireless power supply device on the base of the storage unit and positioning the first wireless power supply device below the second, it enables safe and efficient wireless power supply to devices without unnecessarily emitting electromagnetic waves into the living space.

[0096] Furthermore, the distance over which the first wireless power supply device can supply power to the second wireless power supply device may be longer than the distance over which the second wireless power supply device can supply power to the device, and the amount of power per unit time that the second wireless power supply device can supply to the device may be greater than the amount of power per unit time that the first wireless power supply device can supply to the second wireless power supply device.

[0097] Furthermore, the first wireless power supply device can be installed below (in a lower position) the second wireless power supply device which is installed on the base of the storage stand. Since it is installed below the second wireless power supply device which is installed on the base of the storage stand, it will be in a lower position than the base (top) of the storage stand (table, etc.). For example, it can be attached (placed) on the floor (above or below the floor), or attached to a wall at a height lower than the base (top). More preferably, it can be installed on the floor vertically below the second wireless power supply device which is installed on the base of the storage stand. This makes it possible to shorten the distance between the first wireless power supply device and the second wireless power supply device compared to when the first wireless power supply device is installed on the ceiling, thereby improving the transmission efficiency of radio waves without unnecessarily transmitting electromagnetic waves into the living space.

[0098] Furthermore, the number of first wireless power supply devices and second wireless power supply devices installed may be in a 1:multiple ratio (for example, one first wireless power supply device powers multiple second wireless power supply devices, or multiple first wireless power supply devices power a smaller number (including one) of second wireless power supply devices), or in a 1:1 ratio (one first wireless power supply device powers one second wireless power supply device).

[0099] Furthermore, the wireless power supply system of Reference Invention 2-2 is, in the wireless power supply system of the first invention, The storage platform is surrounded by chairs where users can sit. The second wireless power supply device is characterized in that when the user, seated in the chair, places the device in the predetermined position, the second wireless power supply device supplies power to the device wirelessly.

[0100] This type of wireless power supply system includes a platform surrounded by chairs for users to sit on. When a user sits in one of the chairs and places their device in a designated position on the platform, wireless power is supplied to that device. This allows users to safely and efficiently wirelessly power (charge) their devices while they are sitting in the chairs surrounding the platform, resting or working.

[0101] Furthermore, the wireless power supply system of Reference Invention 2-3 is, in the wireless power supply system of the second invention, When the user approaches the storage platform, the first wireless power supply device will not supply power to the second wireless power supply device. The first wireless power supply device is characterized in that, if the user is not approaching the storage platform, it supplies power to the second wireless power supply device.

[0102] With this type of wireless power supply system, when a user approaches the storage platform, the supply of power (wireless power supply) from the first wireless power supply device to the second wireless power supply device is stopped, and when the user is not approaching the storage platform, the supply of power (wireless power supply) from the first wireless power supply device to the second wireless power supply device is enabled. When a user approaches the storage platform, the user's (for example, a seated user) feet may come close to the electromagnetic wave output area at the bottom of the placement surface (platform). Therefore, by stopping the wireless power supply from the first wireless power supply device when the user approaches the storage platform, the possibility of electromagnetic waves emitted from the floor adversely affecting the seated user can be reduced.

[0103] Here, proximity detection means (such as an infrared sensor) may be installed at a predetermined position on the storage unit to detect when a user approaches the unit, and the presence or absence of approach may be determined by the ON or OFF state of the proximity detection means. Alternatively, the proximity detection means may be installed on the chair. The proximity detection means may also be a sensor capable of determining whether or not a user is seated in the chair.

[0104] Furthermore, the wireless power supply system of Reference Invention 2-4 is a wireless power supply system of the first or second invention, The invention is characterized by providing an intrusion prevention member between the first wireless power supply device and the second wireless power supply device, which surrounds the output area of ​​the electromagnetic waves output from the first wireless power supply device to the second wireless power supply device.

[0105] This wireless power supply system includes an intrusion prevention member that surrounds the electromagnetic wave output area between the first and second wireless power supply devices. Furthermore, by physically surrounding the electromagnetic wave output area with the intrusion prevention member, it is possible to prevent the user's feet from accidentally entering the electromagnetic wave output area while seated in a chair. This also enables safe and efficient wireless power supply to devices.

[0106] Furthermore, in the invention described above, the member surrounding the electromagnetic wave output area between the first wireless power supply device and the second wireless power supply device (which may also serve as an intrusion prevention member, or may be provided separately) has an electromagnetic wave shielding section that prevents electromagnetic waves output from the first wireless power supply device from being output to the side of the electromagnetic wave output area. The electromagnetic wave shielding section (first electromagnetic wave shielding section) can prevent electromagnetic waves output from the first wireless power supply device toward the power storage section of the second wireless power supply device from being output outward (towards the user, outside the electromagnetic wave shielding section) from the electromagnetic wave output area below the storage stand. This also enables safe and efficient wireless power supply to the device. Furthermore, this ensures safety because even if the feet of a user sitting in a chair approach the electromagnetic wave output area, electromagnetic waves will not be output outward. Note that this also includes a configuration in which the member surrounding the electromagnetic wave output area itself serves as the electromagnetic wave shielding section.

[0107] Furthermore, the aforementioned storage stand has an electromagnetic wave shielding section (second electromagnetic wave shielding section) on the base (below the mounting surface of the base), and the electromagnetic wave shielding section prevents electromagnetic waves output from the first wireless power supply device installed on the floor towards the power storage section of the second wireless power supply device installed on the base of the storage stand from penetrating the mounting surface of the base of the storage stand and being output above the mounting surface. This also enables safe and efficient wireless power supply to the device. The electromagnetic wave shielding section can be made of a metal plate, an aluminum plate, a metal-plated resin plate, a plate coated with conductive paint, etc.

[0108] Furthermore, by covering both the lateral and upper regions between the first and second wireless power supply devices with electromagnetic wave shielding sections within the electromagnetic wave output region, wireless power supply to devices can be made safer. Ideally, the power storage section of the second wireless power supply device should be located in the inner region of the electromagnetic wave output region, and the power supply section of the second wireless power supply device should be located in the outer region of the electromagnetic wave output region, with the power storage section and the power supply section connected by a wire. This enables safe and efficient wireless power supply to devices.

[0109] According to this reference invention 2, it is possible to safely and efficiently wirelessly supply power to devices in a living space using multiple wireless power supply devices with different wireless power transmission capabilities. [Explanation of Symbols]

[0110] 1 Wireless power supply system, 3 Living space, 11 Solar panel, 21 Power conditioner, 31 Solar battery, 41 Electromagnetic wave wireless power supply device, 51 Electromagnetic induction wireless power supply device, 61 Table, 71 Smartphone, 81 Charging area, 101 Floor, 102 Underfloor space, 103 Table, 104 Base section, 105 Leg section, 106 Intrusion prevention section, 107 Electromagnetic wave shielding member, 108 Electromagnetic wave output area, 111 Charging area, 200 Wireless power supply system.

Claims

1. A wireless power supply system capable of supplying power to a device by placing the device on a designated position on a storage stand arranged in a living space, A first wireless power supply device capable of supplying power wirelessly, The device includes a second wireless power supply unit that has a power storage unit capable of receiving power from the first wireless power supply unit and storing said power, and is capable of wirelessly supplying power to the device using the power from the power storage unit, The aforementioned storage stand comprises a base portion having a mounting surface on which the device can be placed, The distance over which the first wireless power supply device can supply power to the second wireless power supply device is longer than the distance over which the second wireless power supply device can supply power to the device. The second wireless power supply device is provided on the base portion of the storage stand, The first wireless power supply device is provided below the second wireless power supply device which is provided on the base portion of the storage stand, The power storage unit of the second wireless power supply device stores power supplied from the first wireless power supply device, and when the device is placed in the predetermined location, the second wireless power supply device wirelessly supplies power to the device using the power from the power storage unit. A wireless power supply system characterized by the following features.

2. The storage platform is surrounded by chairs where users can sit. The wireless power supply system according to claim 1, characterized in that when the user, seated in the chair, places the device in the predetermined position, the second wireless power supply device wirelessly supplies power to the device.

3. When the user approaches the storage platform, the first wireless power supply device does not supply power to the second wireless power supply device. The wireless power supply system according to claim 2, characterized in that the first wireless power supply device supplies power to the second wireless power supply device when the user is not approaching the storage platform.

4. The wireless power supply system according to claim 2 or 3, characterized in that an intrusion prevention member is provided between the first wireless power supply device and the second wireless power supply device, enclosing the output area of ​​electromagnetic waves output from the first wireless power supply device to the second wireless power supply device.

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