Wireless power supply system

Abstract

In recent years, cashless payments (also called "electronic payments") have become widespread, and if the power of the smartphone used for cashless payments is turned off, the payment cannot be made, which can be a problem. In addition, when providing a wired charging device, the wiring becomes complicated and it is also troublesome to consider the layout of the wiring. [Solution] The present invention has been made in consideration of the above-mentioned circumstances, and provides a system that safely and efficiently wirelessly supplies power to mobile devices such as smartphones at any position within a living space.

Description

[Technical field]

[0001] The present invention relates to a wireless power supply system that wirelessly charges a mobile device in a living space. [Background technology]

[0002] In recent years, cashless payment (also called "electronic payment") has been recommended, and it can eliminate the need for cash management, and solve the problem of labor shortage and productivity improvement. In addition, it is costly to maintain the infrastructure costs for cash payment, and it can reduce these costs.

[0003] There are various types of electronic payments, including payments made by installing a dedicated app on a mobile device such as a smartphone, payments made using a credit card, and payments made using a prepaid card. Credit card and prepaid card payments are unlikely to become unusable unless the card is physically damaged. On the other hand, electronic payments made using a mobile device such as a smartphone cannot be made if the mobile device runs out of power. In addition, smartphones in particular consume a lot of power because they are used for a variety of purposes such as calling, playing games, SNS, and taking photos, and you may not realize that you have run out of power.

[0004] At certain events, only electronic payments are accepted and cash is not accepted. In such a situation, if the smartphone used for electronic payments runs out of power and there is no other means of payment, the purchaser of the goods or service will be in a great deal of trouble. It is conceivable to lend out cables capable of charging mobile devices such as smartphones, but if a wired system is used, it is necessary to prepare many lines (wires) for charging in accordance with the various input and output shapes, which is cumbersome. Therefore, it is conceivable to charge mobile devices wirelessly. The following prior art is a conventional technology for wireless charging. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2021-7276 [Patent Document 2] Patent Publication No. 2016-182035 [Patent Document 3] Patent Publication No. 2024-47209 Summary of the Invention [Problem to be solved by the invention]

[0006] There are three technologies for wireless power supply (wireless power supply): electromagnetic induction, electrostatic coupling, and electromagnetic wave (microwave, laser). Electromagnetic induction can be realized in a small size and at low cost, and can transmit relatively large amounts of power with high efficiency. There is an international standard called "Qi" for wireless charging, and this electromagnetic induction method is used. Therefore, many smartphones that support wireless charging are compatible with this electromagnetic induction "Qi" standard. On the other hand, the electromagnetic induction method has the disadvantage that the power transmission distance is short (a few mm to about 10 cm).

[0007] In addition, the electromagnetic wave method uses an electromagnetic field to transmit power; 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 direct current using a rectifier circuit. This method has the advantage of transmitting power over long distances (several meters). On the other hand, this electromagnetic wave method has the disadvantage that the power transmission efficiency is poor and it is difficult to transmit large amounts of power. In other words, it is difficult to supply enough power to cover the power consumption of a smartphone with wireless power supply using the electromagnetic wave method. In addition, outputting high-power electromagnetic waves (wireless signals) over long distances is not desirable, as it is necessary to consider the impact on other wireless devices and the human body.

[0008] The present invention has been made in consideration of the above-mentioned circumstances, and provides a system that safely and efficiently wirelessly supplies power to a mobile device such as a smartphone at any position in a living space. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems, a wireless power supply system according to a first aspect of the present invention includes: A wireless power supply system capable of supplying power to a mobile device at a specific position in a living space, comprising: A first wireless power supply device capable of wirelessly supplying power; A power supply device capable of receiving power from the first wireless power supply device and storing the power. Has a storage battery Power storage unit and, A power storage unit is capable of wirelessly supplying power to the mobile device. A power transmission unit having a power transmission coil. A second wireless power supply device, a distance over which the first wireless power supplying apparatus can supply power to the second wireless power supplying apparatus is longer than a distance over which the second wireless power supplying apparatus can supply power to the mobile device; an amount of power per unit time that the second wireless power supplying apparatus can supply to the mobile device is greater than an amount of power per unit time that the first wireless power supplying apparatus can supply to the second wireless power supplying apparatus; The power storage unit of the second wireless power supplying apparatus constantly receives power from the first wireless power supplying apparatus and stores the power, and when the mobile device is placed at the specific position, the second wireless power supplying apparatus wirelessly supplies power to the mobile device using the power of the power storage unit. It is something like the second wireless power supply device includes a first switch capable of switching a power supply of the power storage unit between ON and OFF, and a second switch capable of switching a power supply of the power transmission unit between ON and OFF, When the power transmission unit is turned off and the power storage unit is turned on, the power storage unit is capable of receiving power from the first wireless power supply device and storing the power. It is characterized by the above.

[0010] Such a wireless power supply system includes a first wireless power supplying apparatus capable of supplying power wirelessly and a second wireless power supplying apparatus capable of supplying power wirelessly. The first wireless power supplying apparatus has a longer distance over which power can be wirelessly transmitted than the second wireless power supplying apparatus, and the second wireless power supplying apparatus can transmit a larger amount of power per unit time than the first wireless power supplying apparatus. By utilizing the respective advantages of the first wireless power supplying apparatus and the second wireless power supplying apparatus, which have different wireless power transmission capabilities, it is possible to wirelessly supply power to a mobile device at a specific position in a living space safely and efficiently.

[0011] In addition, the wireless power supply system of the second invention is the wireless power supply system of the first invention, the first wireless power supply device is an electromagnetic wave type wireless power supply device, The second wireless power supplying device is characterized in that it is an electromagnetic induction type wireless power supplying device.

[0012] According to this 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 wireless power supply device and the second wireless power supply device, which have different wireless power transmission capabilities, it is possible to wirelessly supply power to a mobile device at a specific position in a living space safely and efficiently.

[0013] A wireless power supply system according to a third aspect of the present invention is the wireless power supply system according to the first or second aspect of the present invention, a table is provided in the living space, and the specific position is a position on the table; The first wireless power supply device is installed directly or via an installation member on a wall or ceiling surface of the living space, The second wireless power supply device is disposed below the specific position on the table.

[0014] According to such a wireless power supply system, the first wireless power supply device is installed on a wall or ceiling surface 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. As a result, the first wireless power supply device is installed in a position where electromagnetic waves can be easily transmitted to substantially the entire living space (for example, on the ceiling or upper part of a wall), and wireless power is supplied from the first wireless power supply device to a power storage unit of the second wireless power supply device installed on the table. This also 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 a mobile device at a specific position in the living space. Effect of the Invention

[0015] According to the present invention, it is possible to wirelessly supply power to mobile devices in a living space safely and efficiently using a plurality of wireless power supply devices having different wireless power transmission capabilities. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a diagram showing an embodiment of a system for wirelessly supplying power to a mobile device in a living space. [Diagram 2] 1 is a block diagram showing a configuration of a wireless power supply system. [Diagram 3] 1A is a perspective view of an electromagnetic induction type wireless power supplying device, FIG. 1B is a view of a table on which an electromagnetic induction type wireless power supplying device is installed, as viewed from above the table, and FIG. 1C is a view of a table on which an electromagnetic induction type wireless power supplying device is installed, as viewed from the side of the table. [Figure 4] FIG. 13 is a diagram showing another aspect of a system for wirelessly supplying power to a mobile device in a room space. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Next, an embodiment of the present invention will be described using an example. In the following, an example in which the wireless power supply system of the present invention is applied to a living space of a cafe (coffee shop) will be described. Also, this example is an example of installation of the wireless power supply system to the structure 2, and is not limited to this example. It can be applied to various spaces. EXAMPLES

[0018] The wireless power supply system 1 of this embodiment is a system that combines multiple wireless power supply devices with different wireless power supply capabilities (wireless power supply mechanisms) to wirelessly charge a mobile device such as a smartphone used by a user at a set position in a living space. In this embodiment, a set position 81 (also called a charging position, charging area, or specific position) where a mobile device such as a smartphone 71 can be wirelessly charged is provided on a table 61. Since this table 61 is not connected to a commercial AC power source (since movement and installation position are not restricted by a cable), the table 61 can be laid out at any position in the living space.

[0019] This allows the store to arrange tables, chairs, and other fixtures in any layout they like, without having to consider wiring, etc. Also, because there is no need to consider wiring for the layout, it is possible to reduce costs for both the initial layout and any changes to the layout.

[0020] FIG. 1 is a diagram showing a schematic view of a part of the exterior of a structure 2 operating a cafe (coffee shop) in which a wireless power supply system 1 of the present invention is installed, and a part of the interior of a living space 3. This cafe is capable of using electronic payment to pay for the purchase of goods and services (electronic payment may be the only option). In the living space 3, three tables are spaced apart at a predetermined interval. Chairs are placed on the left and right of each table, making it a two-seater table. In addition, one user is seated at each table, and the scene shows each user (user) charging his / her own smartphone 71 at a set position (charging position, specific position) on the table while drinking a drink. In this embodiment, the smartphone is compatible with electromagnetic induction wireless charging such as the Qi standard.

[0021] A solar panel 11 (for example, generating 10 kW) is installed on the roof of the structure 2, making it possible to generate electricity using sunlight. A power conditioner 21 is installed at the top of the outer wall of the structure 2 on the right side of the paper, and a solar storage battery 31 (solar power storage device) that stores the electricity generated by the solar panel 11 is installed at the bottom. The solar panel 11, power conditioner 21, and solar storage battery 31 are electrically connected by a cable 12. The power conditioner 21 is a well-known device and has the functions of converting the electricity generated by the solar panel 11 and the electricity stored in the solar storage battery 31 from direct current to alternating current, and cutting off the output of electricity from the outside when an event such as overvoltage or undervoltage occurs.

[0022] Here, electromagnetic induction, magnetic resonance, electrostatic coupling, and electromagnetic wave are known as methods for supplying power wirelessly. Of these, the Qi standard, which uses the electromagnetic induction method, is an international standard for wireless charging, and is currently used in many smartphones. Moreover, wireless power supply devices using the electromagnetic induction method can be realized at a small size and low cost. Furthermore, they are suitable for transmitting relatively large amounts of power over short distances, and can wirelessly supply enough power to charge devices that consume the same amount of power as mobile devices such as smartphones 71. On the other hand, the electromagnetic induction method has a disadvantage in that the power transmission distance is short (several mm to about 10 cm), making it difficult to transmit power over a wide area of ​​the living space 3.

[0023] Furthermore, there is an electromagnetic wave method as a method that can transmit power over long distances. The electromagnetic wave method is a method that transmits power using an electromagnetic field, in which the power transmitting side converts electric current into electromagnetic waves (microwaves, lasers) and transmits them, and the power receiving side receives the electromagnetic waves from an antenna and converts them into direct current using a rectifier circuit, and has the advantage of transmitting power over long distances (several meters). On the other hand, the electromagnetic wave method has the disadvantage that the power transmission efficiency is poor and it is difficult to transmit large amounts of power. In other words, with the electromagnetic wave method, it is difficult to directly charge a device that consumes power at the same level as a mobile device such as a smartphone 71. In addition, it is not preferable to output high-power electromagnetic waves (wireless signals) over long distances, as it is necessary to consider the effects on other wireless devices and the human body.

[0024] Therefore, in this wireless power supply system, an electromagnetic induction type wireless power supply device 51 using an electromagnetic induction method and an electromagnetic wave type wireless power supply device 41 using an electromagnetic wave method are combined to construct a wireless power supply system capable of wirelessly charging a mobile device such as a smartphone 71.

[0025] As shown in FIG. 1, an electromagnetic wave type wireless power supply device 41 (first wireless power supply device) is provided at approximately the center of the ceiling of the living space 3. The electromagnetic wave type wireless power supply device 41 is preferably installed at a position overlooking the entire living space 3 so that electromagnetic waves can be transmitted to any position (as wide an area as possible) in the living space 3. In this embodiment, it is installed at the center of the ceiling, but it may be installed on a wall. The electromagnetic wave type wireless power supply device 41 (first wireless power supply device) is electrically connected to the solar storage battery 31 (solar panel 11) via the power conditioner 21, and power is constantly supplied to the electromagnetic wave type wireless power supply device 41 (first wireless power supply device) and electromagnetic waves for power supply are constantly output unless a switching operation (power off or electromagnetic wave transmission off) is intentionally performed by turning off a switch (changeover switch), for example.

[0026] The electromagnetic wave type wireless power feeder 41 is constantly driven using the power of the solar storage battery 31 to output electromagnetic waves. This is because the electromagnetic wave type wireless power feeder cannot transmit large power, and can only transmit small power (1W or less). For this reason, if the operating time (power supply time) of the electromagnetic wave type wireless power feeder 41 and the operating time (power supply time) of the electromagnetic induction type wireless power feeder 51 are the same, the charging of the electromagnetic induction type wireless power feeder 51 (storage battery 53) will not keep up with the power, and the power will run out, making it impossible to operate the electromagnetic induction type wireless power feeder 51. Therefore, the electromagnetic wave type wireless power feeder 41 is constantly driven, and power is transmitted for a longer time than the operating time of the electromagnetic induction type wireless power feeder 51 to constantly charge the storage battery 53, thereby covering the weakness of only being able to transmit small power.

[0027] Moreover, an electromagnetic induction type wireless power feeder 51 (second wireless power feeder) is installed on a table 61 installed on the floor surface of the living space 3. This electromagnetic induction type wireless power feeder 51 has a storage battery 53 (power storage unit). Then, the storage battery 53 of the electromagnetic induction type wireless power feeder 51 is wirelessly fed (wirelessly charged) by electromagnetic waves 42 (wireless power feed) constantly output from the electromagnetic wave type wireless power feeder 41. Also, on three (plural) tables installed in the living space 3, an electromagnetic induction type wireless power feeder 51 (second wireless power feeder) having a storage battery 53 is installed, respectively. Then, the electromagnetic wave type wireless power feeder 41 wirelessly feeds power simultaneously or sequentially to the storage batteries 53 of the plurality of electromagnetic induction type wireless power feeders 51 by the electromagnetic waves (wireless power feed) constantly output.

[0028] A customer (user) who wishes to charge a mobile device such as a smartphone 71 can wirelessly charge the mobile device by simply placing the mobile device in a set position on the upper part of the electromagnetic induction type wireless power supply device 51 for a predetermined time while having a drink at a cafe. As a result, even if the remaining power of the smartphone 71 owned by the user is low (empty), the smartphone 71 can be charged to a certain extent while the user is using the cafe, and the cost of drinks and other services at the cafe can be paid for by electronic payment using the smartphone 71.

[0029] In addition, stores can provide mobile device charging facilities in a layout of their choice without incurring large costs, and users can easily charge their smartphones when they are out of power, eliminating problems that can occur when making electronic payments, such as smartphones running out of power.

[0030] In this wireless power supply system 1, power generated by the solar panel 11 (power generated by solar power) is used as power (main power) for the wireless power supply device. Therefore, it is possible to provide a wireless power supply system that is mainly based on clean energy and has a low environmental impact (is friendly to the global environment).

[0031] In addition, the wireless power supply system 1 can operate autonomously using only the power generated by sunlight, but in order to stabilize the operation, the power conditioner and the storage battery may be connected to a commercial AC power source with a power cable. In addition, a monitoring control unit that monitors the amount of power generated by the solar panel 11 and the remaining amount of power stored in the solar storage battery 31 and a monitor that allows the amount to be visually confirmed may be provided. These may also be connected to a commercial AC power source with a power cable. In addition, since the ability of solar power generation by the solar panel 11 is significantly reduced in bad weather, in such a case, the storage of power in the solar storage battery 31 may be switched to storage from the commercial AC power source. In addition, power may be directly supplied from the commercial AC power source to the electromagnetic wave type wireless power supply device 41. In addition, the wireless power supply system 1 of the present invention may be adopted in a store where payment can be made by cash or the like other than electronic payment.

[0032] 2 is a block diagram showing 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 above-mentioned solar panel 11, power conditioner 21, solar storage battery 31, and electromagnetic wave type wireless power supply device 41, and also has a transmission circuit and a control unit (not shown). Furthermore, the electromagnetic wave type wireless power supply device 41 has a transmission antenna 43 for transmitting electromagnetic waves therein, and transmits electromagnetic waves 42 from this transmission antenna 43 toward a receiving antenna 52 of an electromagnetic induction type wireless power supply device 51 (the distance between the antennas is assumed to be 2 m to 5 m, and the electromagnetic waves use a frequency of, for example, 5.7 GHz band).

[0033] The middle block is composed of an electromagnetic induction type wireless power feeder 51, which will be described later. The electromagnetic induction type wireless power feeder 51 has a receiving antenna 52 for receiving electromagnetic waves transmitted from the electromagnetic induction type wireless power feeder 41. It also has a receiving circuit and a control unit (not shown) that receive electromagnetic waves from the power receiving antenna 52 and convert them into direct current. The electromagnetic induction type wireless power feeder 51 is also provided with two power switches SW1 and SW2. The electromagnetic induction type wireless power feeder 51 includes 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.

[0034] The power switch 1SW1 (first switch) can switch the power of the power storage unit ON or OFF, and the power switch 2SW2 (second switch) can switch the power of the power transmission unit ON or OFF. This allows the operating power of the power storage unit to be always ON to store power at all times in order to minimize the power consumption of the electromagnetic induction type wireless power supply device 51, and allows the operating power of the power transmission unit to be turned OFF except when power is supplied 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. This also makes it possible to compensate for the fact that the amount of power supply per unit time of the electromagnetic wave type wireless power supply device 41 is small, that is, the ability to charge the storage battery of the electromagnetic induction type wireless power supply device 51 is low.

[0035] As described above, the wireless power feeding system 1 is configured so that the time during which power is fed from the electromagnetic wave type wireless power feeder 41 to the electromagnetic induction type wireless power feeder 51 is longer than the time during which power is fed from the electromagnetic induction type wireless power feeder 51 to the mobile device. The electromagnetic induction type wireless power feeder 51 feeds power only when the mobile device is placed in a set position.

[0036] By turning on the power of the power storage unit, it becomes possible to receive (receive) and store the power transmitted from the electromagnetic wave type wireless power feeder 41. Also, by turning on the power of the power transmission unit, it becomes possible to generate an induced current 57 between the power transmission coil 54 of the electromagnetic induction type wireless power feeder 51 and the power receiving coil 72 of the smartphone 71 placed in the set area, thereby charging the storage battery 73 (power storage unit) of the smartphone 71.

[0037] The lower block shows a smartphone 71. The smartphone 71 that can be used with this wireless power supply system is an electromagnetic induction type wireless power supply compatible device (mobile device) that has an internal receiving coil 72, a storage battery 73, a control unit 74 that performs various controls, etc.

[0038] Next, the electromagnetic induction type wireless power feeder 51 and wireless power feed to the smartphone 71 will be specifically described with reference to FIG. 3. As shown in FIG. 3(a), the electromagnetic induction type wireless power feeder 51 is a rectangular box-shaped (rectangular parallelepiped) device. In FIG. 3(a), a box section (power transmission section) with a double square pattern on the left side of the electromagnetic induction type wireless power feeder 51 contains a power transmission coil 54 and a power transmission circuit (not shown), which are essential to the electromagnetic induction type wireless power feeder 51. Also, a box section (power storage section) with an antenna pattern on the right side of the electromagnetic induction type wireless power feeder 51 contains a receiving antenna 52 for receiving electromagnetic waves from the electromagnetic wave type wireless power feeder 41, a receiving circuit (not shown), and a storage battery 53 for converting the received electromagnetic waves into a current and storing the current.

[0039] Also, the power switch 56 (Part 2 A power switch is a switch that can turn the power supply on the power transmission unit on or off. 55 (Part 1 The switch) is a switch that can turn the power supply on the power storage unit side ON or OFF. When the power supply on the power storage unit side is turned OFF, the power supply on the power transmission unit side is automatically turned OFF as well.

[0040] Fig. 3(b) shows the electromagnetic induction type wireless power supply 51 of Fig. 3(a) installed in a storage recess 64 formed on the upper surface of a table 61. The storage recess 64 is formed in an approximately similar shape (slightly larger size) to the electromagnetic induction type wireless power supply 51, and is shaped so that the entire electromagnetic induction type wireless power supply 51 fits into it. In addition, when the electromagnetic induction type wireless power supply 51 is fitted (installed) in the storage recess 64, the upper surface of the electromagnetic induction type wireless power supply 51 and the upper surface of the table 61 are configured to be approximately flush with each other.

[0041] When a user 63 (user) wants to charge his / her mobile device such as a smartphone 71, he / she first turns on both power switches 55 and 56 of the electromagnetic induction type wireless power supply 51. Then, the smartphone 71 is placed so that the power receiving coil 72 of the smartphone 71 is located at the top (set position) of the "box part with a double square pattern" on the left side of FIG. 3(a) (the smartphone 71 is placed at the set position on the table) (the smartphone 71 is placed at the position shown by the dashed line in FIG. 3(b)), and the smartphone 71 is automatically charged. When charging is to be terminated, it is desirable to turn off only the power switch 56 side of the electromagnetic induction type wireless power supply 51. This reduces the power consumption of the electromagnetic induction type wireless power supply 51, while continuing power supply from the electromagnetic wave type wireless power supply device 41, and minimizes the possibility of the storage battery 53 running out of power.

[0042] The box part (power storage part) on which an antenna pattern is drawn is provided on the table top in order to more efficiently receive the electromagnetic waves 42 transmitted by the electromagnetic wave type wireless power supply device 41 installed on the ceiling. Furthermore, since the receiving antenna 52 is provided on the upper part inside the box part, it is possible to more efficiently receive the electromagnetic waves 42 transmitted by the electromagnetic wave type wireless power supply device 41. FIG. 3(c) is a side view of the table 61 on which the electromagnetic induction type wireless power supply device 51 is installed and the smartphone 71 is placed at the setting position 81. The shaded area is the setting position 81, and by positioning the receiving coil 72 of the smartphone 71 within this area, it is possible to charge more efficiently.

[0043] Next, an embodiment in which the wireless power supply system 100 is installed with a different table layout in the same living space 3 as described above will be described with reference to FIG. 4. In the embodiment of FIG. 4, a plurality (four) of tables 61 are attached to each other to form a table layout that can be used by a large group (e.g., eight people). Since no cable is provided on the table 61 on which the electromagnetic induction type wireless power supply device 51 capable of charging a smartphone is installed, it is possible to easily change the layout to any layout without worrying about wiring while maintaining the charging function. In addition, the store side can freely change the table layout at any time in response to a request from a user or according to the store side's convenience while maintaining the charging function.

[0044] In addition, the rechargeable battery 53 (charging section) that 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), so there is no need to replace the battery or charge it via a cable. In this way, by introducing this wireless power supply system, it is possible to obtain a great number of benefits (effects).

[0045] 4, unlike FIG. 1, two mounting rails 44 (mounting members) are installed in parallel on the ceiling, and the electromagnetic wave type wireless power feeder 41 (first wireless power feeder) is mounted via the mounting rails 44, so that the electromagnetic wave type wireless power feeder 41 can be moved (slid) to any position on the mounting rails 44. This allows the electromagnetic wave type wireless power feeder 41 to be moved in response to a change in the layout of the table 61, and improves the transmission and reception efficiency of the electromagnetic waves 42 between the electromagnetic wave type wireless power feeder 41 and the electromagnetic induction type wireless power feeder 51. This makes it possible to minimize the possibility that the stored power of the rechargeable battery 53 of the electromagnetic induction type wireless power feeder 51 will run out.

[0046] 4, a plurality of electromagnetic wave type wireless power feeders 41 may be attached to a mounting rail 44 on the ceiling. Each of the plurality of electromagnetic wave type wireless power feeders 41 may be independently movable to any position on the mounting rail 44. This increases the ability of the electromagnetic wave type wireless power feeder 41 to feed power to the storage battery 53 of the electromagnetic induction type wireless power feeder 51, and minimizes the possibility that the storage power of the rechargeable battery 53 of the electromagnetic induction type wireless power feeder 51 will run out.

[0047] As described above, the electromagnetic wave type wireless power feeder 41 constantly (for a long time) transmits weak electromagnetic waves that have no effect on the human body over a long distance to a wide area of ​​the living space 3, and the electromagnetic waves are received by the electromagnetic induction type wireless power feeder 51, converted into current, and stored in the power storage unit 53. This electromagnetic induction type wireless power feeder 51 has a power output at a level capable of charging a mobile device (smartphone 71), and consumes a large amount of power but has a short usage time.

[0048] As a result, even if the power of mobile devices such as smartphones used for electronic payments, which have been increasing in number in recent years, runs low, they can be easily charged while receiving services at a cafe, etc., making it possible to eliminate problems such as the smartphone 71 running out of power and being unable to make electronic payments for services. Note that since the object of the present invention is to increase or maintain the charging level of the smartphone 71 to a level at which electronic payments can be made, there is no need to charge it to a full level.

[0049] [Other aspects] In the above-mentioned configuration, one electromagnetic wave type wireless power feeder (first wireless power feeder) may supply power to a plurality (two or more) of electromagnetic induction type wireless power feeders (second wireless power feeder (power storage unit)). In the above-mentioned configuration, a table (wireless power feed table) on which the electromagnetic induction type wireless power feeder (second wireless power feeder) is installed can be freely laid out (moved) in the living space. An installation member for installing the electromagnetic wave type wireless power feeder (first wireless power feeder) may be configured to be adjustable in angle (right downward, left downward, front downward, back downward, combinations thereof, etc.) and position (slide movement) of the electromagnetic wave type wireless power feeder (first wireless power feeder). This makes it possible to improve the efficiency of power feed by adjusting the transmission direction of the electromagnetic waves, and improve charging efficiency (power storage efficiency). In addition, the electromagnetic induction type wireless power supply device (second wireless power supply device) is arranged so that the power receiving unit of the power storage unit of the electromagnetic induction type wireless power supply device (second wireless power supply device) is located on the upper surface of the table, thereby making it possible to improve charging efficiency.

[0050] In this embodiment, power is supplied to the electromagnetic wave type wireless power supply device (first wireless power supply device) by photovoltaic power generation (solar power generation) using a solar panel. Instead of this mode, the electromagnetic wave type wireless power supply device (first wireless power supply device) may be connected to a commercial AC power source by a wire (power line) to provide operating power. The electromagnetic wave type wireless power supply device may be connected to both power generated by a solar panel (solar storage battery) and a commercial AC power source, and the power generated by the solar panel may be used preferentially, while the remaining power of the solar storage battery may be monitored, and when the amount of power decreases, the power source may be switched to the commercial AC power source (power switching means may be provided). Such power source switching control may be performed automatically by providing a power decrease monitoring means.

[0051] Similarly, the electromagnetic induction type wireless power feeder may also be provided with a connection port that can be electrically connected to a commercial AC power source, and when a problem occurs in the electromagnetic wave type wireless power feeder, the remaining power of the solar storage battery decreases, or the remaining power of the power storage unit of the electromagnetic induction type wireless power feeder decreases, and a smartphone or the like cannot be charged properly, the power source may be switched to the commercial AC power source (having a power switching means). Also, such power source switching control may be performed automatically by providing a power drop monitoring means.

[0052] A monitoring means for monitoring the remaining charge (amount of charge) of the storage battery 53 of the electromagnetic induction type wireless power supply device 51 may be provided, and when the amount of charge in the storage 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. A transmission control means for switching on / off the electromagnetic wave transmission of the electromagnetic wave type wireless power supply device 41 may be provided.

[0053] [others] Simply providing a battery-type wireless power supply device requires the battery to be recharged or replaced when it runs out of power, which is time-consuming. The present invention provides a system that wirelessly supplies power to a mobile device such as a smartphone at any position in a living space in a safe and efficient manner. The present invention also provides a wireless power supply system that allows easy and free layout in a living space.

[0054] 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 position in a living space, comprising: A first wireless power supply device capable of wirelessly supplying power; a second wireless power supplying apparatus having a power storage unit capable of receiving power from the first wireless power supplying apparatus and storing the power, and capable of wirelessly supplying power to the mobile device using power from the power storage unit; a distance over which the first wireless power supplying apparatus can supply power to the second wireless power supplying apparatus is longer than a distance over which the second wireless power supplying apparatus can supply power to the mobile device; an amount of power per unit time that the second wireless power supplying apparatus can supply to the mobile device is greater than an amount of power per unit time that the first wireless power supplying apparatus can supply to the second wireless power supplying apparatus; The power storage unit of the second wireless power supplying apparatus constantly receives power from the first wireless power supplying apparatus and stores the power, and when the mobile device is placed at the specific position, the second wireless power supplying apparatus wirelessly supplies power to the mobile device using the power of the power storage unit. It is characterized by the above.

[0055] Such a wireless power supply system includes a first wireless power supplying apparatus capable of supplying power wirelessly and a second wireless power supplying apparatus capable of supplying power wirelessly. The first wireless power supplying apparatus has a longer distance over which power can be wirelessly transmitted than the second wireless power supplying apparatus, and the second wireless power supplying apparatus can transmit a larger amount of power per unit time than the first wireless power supplying apparatus. By utilizing the respective advantages of the first wireless power supplying apparatus and the second wireless power supplying apparatus, which have different wireless power transmission capabilities, it is possible to wirelessly supply power to a mobile device at a specific position in a living space safely and efficiently.

[0056] In addition, the wireless power supply system of Reference Invention 1-2 is 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 supplying device is characterized in that it is an electromagnetic induction type wireless power supplying device.

[0057] According to this 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 wireless power supply device and the second wireless power supply device, which have different wireless power transmission capabilities, it is possible to wirelessly supply power to a mobile device at a specific position in a living space safely and efficiently.

[0058] In addition, the wireless power supply system of Reference Invention 1-3 is the wireless power supply system of Reference Invention 1-1 or Reference Invention 1-2, a table is provided in the living space, and the specific position is a position on the table; The first wireless power supply device is installed directly or via an installation member on a wall or ceiling surface of the living space, The second wireless power supply device is disposed below the specific position on the table.

[0059] According to such a wireless power supply system, the first wireless power supply device is installed on a wall or ceiling surface 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. As a result, the first wireless power supply device is installed in a position where electromagnetic waves can be easily transmitted to substantially the entire living space (for example, on the ceiling or upper part of a wall), and wireless power is supplied from the first wireless power supply device to a power storage unit of the second wireless power supply device installed on the table. This also 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 a mobile device at a specific position in the living space.

[0060] According to the present reference invention, it is possible to wirelessly supply power to mobile devices in a living space safely and efficiently by using a plurality of wireless power supplying apparatuses having different wireless power transmission capabilities. [Explanation of symbols]

[0061] 1 Wireless power supply system, 3 Living space, 11 Solar panel, 21 Power conditioner, 31 Solar storage battery, 41 Electromagnetic wave wireless power supply device, 51 Electromagnetic induction wireless power supply device, 61 Table, 71 Smartphone.

Claims

1. A wireless power supply system capable of supplying power to a mobile device at a specific position in a living space, comprising: A first wireless power supply device capable of wirelessly supplying power; a second wireless power supplying apparatus including: a power storage unit having a storage battery capable of receiving power supplied from the first wireless power supplying apparatus and storing the power; and a power transmission unit having a power transmission coil capable of wirelessly supplying power to the mobile device using power from the power storage unit; a distance over which the first wireless power supplying apparatus can supply power to the second wireless power supplying apparatus is longer than a distance over which the second wireless power supplying apparatus can supply power to the mobile device; an amount of power per unit time that the second wireless power supplying apparatus can supply to the mobile device is greater than an amount of power per unit time that the first wireless power supplying apparatus can supply to the second wireless power supplying apparatus; the power storage unit of the second wireless power supplying apparatus constantly receives power supplied from the first wireless power supplying apparatus and stores the power, and when the mobile device is placed at the specific position, the second wireless power supplying apparatus wirelessly supplies power to the mobile device using power from the power storage unit, the second wireless power supply device includes a first switch capable of switching a power supply of the power storage unit between ON and OFF, and a second switch capable of switching a power supply of the power transmission unit between ON and OFF, When the power supply of the power transmission unit is turned off and the power supply of the power storage unit is turned on, the power storage unit is capable of receiving power from the first wireless power supply device and storing the power. A wireless power supply system comprising:

2. the first wireless power supply device is an electromagnetic wave type wireless power supply device, 2. The wireless power supply system according to claim 1, wherein the second wireless power supply device is an electromagnetic induction type wireless power supply device.

3. a table is provided in the living space, and the specific position is a position on the table; The first wireless power supply device is installed directly or via an installation member on a wall surface or a ceiling surface of the living space, The wireless power supply system according to claim 1 , wherein the second wireless power supply device is installed below the specific position on the table.

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