Power supply device and power supply system

Abstract

The object of the present invention is to provide a power supply device and a power supply system, which can freely select power at the consumer end, and can determine the power transmission source when receiving power, and can reliably and safely transmit power between transaction parties (transmitters and receivers). Provided is a power supply device and a power supply system, which have: a baseband unit that generates a power signal; a modulation processing unit that modulates the power signal to give a code that determines the power transmission source of the power signal generated by the baseband unit, and generates a modulated signal that can be demodulated by the power receiving device; and a transmission unit that transmits the modulated signal generated by the modulation processing unit.

Description

Technical Field

[0001] The disclosure in this specification relates to a power supply device that transmits a power signal to supply power to a power receiving device and transmits and receives data related to the transmission, and a power supply system including the power supply device. Background Art

[0002] With the liberalization of electricity retail, the active use of renewable energy electricity is being promoted. In order to further promote the use, a system is needed that allows consumers to freely choose the supplier of electricity. Therefore, the determination of the power supply source (transmission power source) is an important technical issue in the construction of this system.

[0003] However, even if the power comes from a different power source, once it flows into the power grid, it is transmitted together with power supplied from other power sources in order to be supplied to the consumer, so the power source cannot be determined at the consumer end.

[0004] Therefore, an electricity trading platform is proposed, which issues tokens as digital certificates to prove the amount of electricity generated and consumed, and records the transaction records between power generation companies and consumers in the blockchain ledger. By referring to the records in the ledger, it is possible to confirm the power source from which the consumer obtains electricity and which consumer the power generation company supplies electricity to (for example, refer to non-patent document 1).

[0005] In addition, in recent years, contactless power supply based on wireless power transmission has attracted attention in terms of power supply technology. The Ministry of Internal Affairs and Communications is also promoting discussions on the design of systems to cope with the wirelessization of electrical appliances, namely power receiving devices. In the future, it is expected that the number of power receiving devices that cope with contactless power supply will increase. For example, in a case where the power receiving device is located at the boundary of a range (power supply area) where power can be supplied by multiple power supply devices, a structure is required to appropriately select any power supply device from among the multiple power supply devices on the power receiving device side according to the power supply status and power receiving status.

[0006] Therefore, in the past, a contactless power supply system has been proposed, in which a power receiving device sends a request power as the power requested by itself to multiple power supply devices, and when the power supply device receives the request power from the power receiving device, it generates judgment reference information used as a judgment reference when the power receiving device selects a power supply device based on the received request power, and sends the generated judgment reference information to the power receiving device. The power receiving device receives the judgment reference information, selects a power supply device to be powered by itself based on the judgment reference information, sends a power supply start request to the selected power supply device, and when the power supply device receives the power supply start request, it starts to supply power to the power receiving device (for example, refer to Patent Document 1).

[0007] In addition, as described above, with the development of power liberalization and wireless power transmission technology, the diversification of power supply sources and terminals at power receiving destinations is expected to accelerate. In the field of information and communication, multiple connections between the transmitting and receiving terminals are known. To eliminate "interference from other users" that occurs during demodulation on the receiving side, spread spectrum modulation is performed. In particular, when using a chaotic spreading code with a constant power, perfect orthogonality can be ensured and the autocorrelation characteristics are good (for example, refer to Patent Document 2).

[0008] Furthermore, as a multi-carrier modulation method, orthogonal frequency division multiple access (OFDM) is known. However, since multiple different frequencies are synthesized, the amplitude variation is large, and large peaks appear at specific times, which may cause saturation of the amplification factor. Therefore, reducing the peak to average power ratio (PAPR) has become an important technical issue. In this regard, from the perspective of signal processing, it has been reported that the super frequency reuse method using almost periodic frequency allocation is effective (for example, refer to Non-Patent Document 2).

[0009] In addition, in non-contact power supply, in the magnetic field resonance coupling method, that is, by using an LC resonator composed of a coil (L) and a capacitor (C) with the same resonance frequency in both the power transmitting and receiving devices to generate a resonance state, high efficiency and large power can be achieved at a large air gap (for example, refer to Non-Patent Document 3).

[0010] Prior Art Documents

[0011] Patent Documents

[0012] Patent Document 1: Japanese Patent Publication No. 5116904

[0013] Patent Document 2: Japanese Patent Publication No. 5131550

[0014] Non-Patent Documents

[0015] Non-Patent Document 1: "Nikkei Business Online Nikkei Energy NextMINNA DENRYOKU and ENERES, Power Blockchain Launched (Minna Denryoku and Eneres, Power Blockchain Launched)", [Online], March 19, 2018, [Retrieved on October 28, 2018], Website <URL: https: / / business.nikkeibp.co.jp / atcl / report / 16 / 022700115 / 031500093 / >

[0016] Non-Patent Document 2: Nakazawa Isao and Umeno Ken, "Performance Evaluation of Satellite Communication Methods Using Almost Periodic Frequency Allocation," Japan Institute of Electronics, Information and Communications Technology Research Report, No. 115, pp. 75-79, November 2015

[0017] Non-patent document 3: Takehiro Imura and Yoichi Hori, "Unified theory of electromagnetic induction method and magnetic field resonance coupling method", The Institute of Electrical Engineering, Proceedings of the Institute of Electrical Engineering D, Journal of Industrial Applications, Vol. 135, No. 6, pp. 697-710, June 2015 Summary of the invention

[0018] Technical Problems to be Solved by the Invention

[0019] However, in the electricity trading platform, the structure of virtually determining the match between electricity consumption and power generation is the following technical problems: namely, the record data of the account book and the supplied electricity are processed by different systems, and the transmission paths are also different, so it is impossible to ensure that the two are accompanied in real time, and the system structure is also complicated.

[0020] In addition, the prior art involved in the patent document 1 is that when a power receiving device requests power supply to multiple power supply devices, each power supply device calculates the distance from the current position of the power receiving device to the power receiving device, and calculates the transmission efficiency when sending power to the power receiving device based on the calculated distance and sends it to the power receiving device. The power receiving device is configured as follows: that is, it receives the received transmission efficiency as judgment reference information, selects a power supply device with good transmission efficiency, sends a power supply start request, and starts power supply from the selected power supply device. Therefore, the power supply device is at most selected within the range limited to the judgment reference information based on the transmission efficiency, rather than a structure that can freely select the power transmission destination desired by the consumer. In addition, as in the case of the power trading platform, the power supply process and the transmission and reception processing process of the judgment reference information are separate systems, so the same technical problems as mentioned above exist.

[0021] Furthermore, as described above, along with the diversification of power receiving terminals, similarly to the information communication field, there is a need for parties involved in power transactions (ie, power supply side and power receiving side) to be able to conduct transactions reliably and safely.

[0022] The disclosure in this specification is proposed to solve the above-mentioned technical problems, and its purpose is to provide a power supply device and a power supply system, which can freely select power at the consumer end and can determine the power transmission source when receiving power, and the transaction parties (power supply side and power receiving side) can conduct transactions reliably and safely.

[0023] Technical solutions for solving technical problems

[0024] In order to achieve the above-mentioned object, the power supply device disclosed in this specification is a power supply device that transmits a power signal to supply power to a power receiving device and transmits and receives data related to the transmission, and has:

[0025] A baseband unit, generating the power signal;

[0026] a modulation processing unit that modulates the power signal so as to add a code that specifies a transmission source of the power signal generated by the baseband unit, and generates a modulated signal that can be demodulated by the power receiving device; and

[0027] a transmitting unit that transmits the modulated signal generated by the modulation processing unit to the power receiving device in a non-contact manner,

[0028] The modulation processing unit comprises:

[0029] A code generator on the transmission side generates a complex spreading code common to the power receiving device based on a primitive root of a predetermined prime number and an identification number of an integer used to generate the chaotic spreading code with constant power, in order to generate the chaotic spreading code with constant power as the code by spread spectrum modulation processing, and multiplies the complex spreading code by the power signal; and

[0030] The complex spreading unit spreads the power signal using the complex spreading code.

[0031] The modulation processing unit comprises:

[0032] a serial / parallel conversion unit, wherein the modulation processing unit converts the power signal as a serial code into a parallel code having a parallel number corresponding to a predetermined multiplexing code length when transmitting using a multi-carrier whose frequency configuration is set to an quasi-periodic function configuration in order to generate the modulation signal using an quasi-periodic function that determines the power signal of at least one power transmission source;

[0033] a subcarrier modulation unit that performs subcarrier modulation of a parallel code of the predetermined multiplexing code length and outputs a multicarrier signal configured at a quasi-periodic frequency represented by the code sequence transmitted by the transmission unit; and

[0034] a substantially periodic function configuration generating unit, which assigns a multi-carrier to the subcarrier modulation unit,

[0035] The transmitting unit allocates subcarrier signals to a plurality of subcarriers different from each other in a predetermined frequency band, thereby transmitting the multicarrier signal as a quasi-periodic frequency subcarrier composite signal using multiple carriers.

[0036] In the modulation processing unit, the predetermined quasi-periodic frequency of the power signal may be a resonance frequency of a magnetic field resonance method.

[0037] In order to achieve the above-mentioned object, the power supply system disclosed in this specification has:

[0038] Any of the power supply devices described above comprises: a baseband unit that generates a power signal; a modulation processing unit that modulates the power signal to give a code that specifies a power source of the power signal generated by the baseband unit and generates a modulated signal that can be demodulated by a power receiving device; and a transmission unit that transmits the modulated signal generated by the modulation processing unit; and

[0039] The power receiving device includes: a receiving unit that receives the modulated signal through a predetermined transmission path; a demodulation processing unit that performs demodulation processing on the received modulated signal; and a power receiving unit that receives power from the power signal obtained by the demodulation processing.

[0040] Effects of the Invention

[0041] The power supply device and power supply system disclosed in this specification have the effect of enabling consumers to freely select power suppliers and determine the power transmission source when receiving power. In addition, it also has the effect of promoting the active use of renewable energy power and accelerating the popularization of contactless power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 (A) is a block diagram of the configuration of a power supply device, and (B) is a block diagram of the configuration of a power receiving device constituting the power supply system disclosed in this specification.

[0043] Figure 2 The figures are for explaining the modulation processing unit and demodulation processing unit of a power supply device and a power receiving device based on spread spectrum modulation processing. (A) is a structural block diagram of the modulation processing unit of the power supply device, and (B) is a structural block diagram of the modulation processing unit of the power receiving device.

[0044] Figure 3 It is a diagram of a modulation processing unit of a power supply device and a power receiving device, in which the frequency configuration of multiple carriers is not synchronized, the frequency intervals are non-equal intervals and are set to a quasi-periodic frequency configuration. (A) is a structural block diagram of the modulation processing unit of the power supply device, and (B) is a structural block diagram of the modulation processing unit of the power receiving device.

[0045] Figure 4 The diagram illustrates a case where power is transmitted by setting the quasi-periodic frequency to the resonant frequency of the magnetic field resonance method in a multi-carrier of an electric power signal. (A) is a basic circuit configuration diagram, and (B) is an equivalent circuit diagram of the basic configuration circuit.

[0046] Figure 5 The present invention is a diagram showing a plurality of power receiving devices that receive power at a plurality of quasi-periodic frequencies transmitted from a power supply device and include resonance circuits that match the respective quasi-periodic frequencies.

[0047] Figure 6 It is a block diagram of the structure of the power supply system according to the first embodiment.

[0048] Figure 7 The figures are figures showing specific examples of the first embodiment, (A) is a schematic diagram showing the state of power supply to a smartphone having a power supply device and a power receiving device, (B) is a schematic diagram showing the state of power supply to a car having a power supply device and a power receiving device, and (C) is a schematic diagram showing the state of power supply to an unmanned aerial object (drone) having a power supply device and a power receiving device.

[0049] Figure 8 Schematic diagrams showing power supply methods when the power supply device and the power receiving device involved in the first embodiment are automobiles, (A) shows the power supply state when there are multiple mobile objects on the power supply side and a single mobile object on the power receiving side, (B) shows the power supply state when there is a single mobile object on the power supply side and multiple mobile objects on the power receiving side, and (C) shows the power supply state when the mobile object on the power receiving side continuously moves to an adjacent cell.

[0050] Fig. 9 It is a block diagram of the structure of the power supply system according to the second embodiment.

[0051] Fig.10 1 is a diagram schematically showing the structure of communication data transmitted to the power receiving device according to the second embodiment.

[0052] Fig.11 It is a block diagram of the structure of the power supply system according to the third embodiment.

[0053] Fig.12 It is a diagram showing an example of screen display on a display unit of a power receiving device according to the third embodiment.

[0054] Fig.13 It is a block diagram of the structure of the power supply system according to the fourth embodiment.

[0055] Fig.14 It is a block diagram of the structure of the power supply system involved in the fifth embodiment.

[0056] Fig.15 This is a schematic diagram showing a state in which power is received only from the power supply device set in advance by the setting unit of the power receiving device according to the fourth embodiment.

[0057] Fig.16 It is a block diagram of the structure of the power supply system involved in the sixth embodiment.

[0058] Fig.17It is a diagram showing a specific example in which the power supply system according to the sixth embodiment is applied to a portable vital sign data measuring device.

[0059] Fig.18 It is a block diagram of the structure of the power supply system involved in the seventh embodiment.

[0060] Fig.19 It is a block diagram of the structure of the power supply system involved in the eighth embodiment.

[0061] Fig. 20 1. It is a schematic diagram showing a state in which power is supplied to power receiving devices having different power supply conditions by a power supply condition processing unit of a power supply system according to an eighth embodiment. (A) is a diagram showing a state in which power is supplied to vehicles passing through a predetermined location in such a manner that the amount of power is different between authenticated vehicles and unauthenticated vehicles. (B) is a diagram showing a state in which priorities are given to power receiving devices and the amount of power is supplied in accordance with the priorities.

[0062] Fig.21 It is a block diagram of the structure of the power supply system involved in the eighth embodiment.

[0063] Fig. 22 This is a schematic diagram showing a state in which a selection unit of a power supply device of a power supply system according to an eighth embodiment selects a power supply destination to be supplied with power based on a state information signal from a power receiving device.

[0064] Fig.23 It is a block diagram of the structure of the power supply system involved in the ninth embodiment.

[0065] Fig.24 It is a block diagram of the structure of the power supply system involved in the tenth embodiment.

[0066] Fig.25 It is a diagram showing the processing of the power storage unit, the log information generating unit, and the calculating unit when receiving and supplying power in the power supply system according to the tenth embodiment.

[0067] Fig.26 It is a block diagram of a modification of the power supply system according to the tenth embodiment.

[0068] Fig. 27 It is a schematic diagram showing a specific example in which the power supply system involved in the tenth embodiment is applied to a smart home.

[0069] Fig.28 It is a block diagram of the structure of the power supply system involved in the eleventh embodiment.

[0070] Fig.29It is a schematic diagram showing a specific example in which the power supply system according to the eleventh embodiment is applied to a smart city.

[0071] Fig.30 Schematic diagram showing a power supply system based on the shortest path selection of the power supply system.

[0072] Fig.31 Schematic diagrams showing a power supply system based on dynamic path selection of the power supply system, (A) is a schematic diagram showing path selection at time t1, (B) is a schematic diagram showing path selection at time t2, and (C) is a schematic diagram showing path selection at time t3.

[0073] Fig.32 Schematic diagrams showing a supply system based on path selection according to priority conditions of the power supply system, (A) is a schematic diagram showing path selection according to priority conditions on the power receiving device side, and (B) is a schematic diagram showing path selection according to priority conditions on the power supply device side. DETAILED DESCRIPTION

[0074] Hereinafter, with reference to the accompanying drawings, the disclosed method for implementing the present specification is described. In the case where a subsequent embodiment has structural elements corresponding to the previously described embodiment, the same figure mark is assigned and repeated description is omitted. In addition, in the case where only a part of the structure is described in each embodiment, there is a case where the figure mark of the previously described embodiment is used for the other parts of the structure. In the case where it is not explicitly stated that a specific combination can be made in each embodiment, the embodiments can also be partially combined with each other as long as there is no particular obstacle to the combination. Furthermore, the embodiments described below are examples and are not limited to the following embodiments. Various changes can be made as long as they do not deviate from the purpose disclosed in this specification.

[0075] Generally, in the field of information communication, by encrypting data, data can be transmitted only to a specific terminal even if the high-frequency medium physically reaches an unspecified number of receiving terminals. On the other hand, for example, in the case of non-contact power transmission by radio wave radiation, it is unmodulated continuous radiation, the spectrum is narrow, and there is interference, so it is difficult to transmit data only to a specific terminal as in the above-mentioned information communication field. Based on the above viewpoints, the disclosure of this specification has the feature of pre-digital processing and encoding before transmitting power, which did not exist before.

[0076] Figure 1 This is a block diagram schematically showing the configuration of a power supply device and a power receiving device constituting a power supply system disclosed in this specification. Figure 1The structural block diagram is a schematic diagram consisting of only necessary structural elements for explaining the disclosed features of this specification, and the common structural elements required for power transmission and reception have been simplified. In addition, as described later, in addition to the case where the power supply device and the power receiving device are each configured as a dedicated machine, there is also a mobile terminal that has both power supply and power receiving functions as described later and has functions other than power supply and power receiving functions.

[0077] Figure 1 (a) is a block diagram of the power supply device. The power supply device 1 includes: a baseband unit 11, which generates a baseband signal before modulation, that is, a power signal; a modulation processing unit 12, which modulates the power signal to give a code that determines the power source of the power signal generated by the baseband unit 11, and generates a modulated signal that can be demodulated by a power receiving device described later; and a transmission unit 13, which transmits the modulated signal generated by the modulation processing unit 12.

[0078] on the other hand, Figure 1 (b) is a block diagram of the power receiving device. The power receiving device 2 includes: a receiving unit 21 that receives the modulated signal generated by the power supply device 1 through a predetermined transmission path; a demodulation processing unit 22 that demodulates the received modulated signal; and a powered unit 23 that receives the power signal obtained by the demodulation processing.

[0079] In addition, the transmission path between the power supply device 1 and the power receiving device 2 may be a transmission path based on power line communication (PLC: Power Line Communication) or high-speed power line communication (BPL: Broadband over Power Lines) in addition to non-contact (wireless). In addition, in the case of the wireless method, the power transmission method is not particularly limited. That is, it may be a transmission path using any method, such as a non-radiative magnetic field coupling type (electromagnetic induction type, magnetic field resonance type), an electric field coupling type, an evanescent wave type, or a radiative radio wave type (microwave, etc.), a laser type, etc.

[0080] <Power supply device>

[0081] (First Embodiment)

[0082] Figure 2 1 is a diagram for explaining the modulation processing unit 12 and the demodulation processing unit 22 of the power supply device and the power receiving device based on the spread spectrum modulation process. That is, the power signal is given a spread code by the spread spectrum modulation process, and the modulated signal is generated by multiplying the power signal. Figure 2 As shown in (a) of FIG. 1 , the modulation processing unit 12 comprises: a transmission side code generating unit 121, which generates a spreading code using a high-speed code series; and a complex spreading unit 122, which performs complex spreading on the code according to two code series. Figure 2 As shown in (b) of FIG. 1 , the demodulation processing unit 22 of the power receiving device includes: a receiving side code generating unit 221, which generates the same extension code as the transmitting side code generating unit 121; and a complex de-extension unit 222, Figure 1 In the receiving unit 21 shown in (b) in FIG. 1 , the modulated signal transmitted from the transmitting unit 13 of the power supply device 1 and received by the receiving unit 21 is despread.

[0083] In the first embodiment, a method of using a chaotic spreading code with constant power as the spreading code is described. In addition, as for the chaotic spreading code with constant power, the SN ratio of the received signal is high, and the amount of information that can be carried on the radio wave in the spreading code also increases sharply, and the anti-fading property is strong, so it is also preferred when sending the power signal.

[0084] Usually, the number of primitive roots q of a prime number p is calculated using the Euler function Given Here, the transmitting side code generating unit 121 first accepts the primitive root q for generating the extension code with respect to the prime number p. primitive roots q1,q2,…, And independently of the acceptance of the primitive root q, any integer among 0, 1, 2, ..., p-1 is accepted as the serial number k for generating the extension code.

[0085] Next, using the specified angle θ, based on the received primitive root q and the received sequence number k, when k = 0, 1, 2, ..., p-2, a complex extension code b(q, k) = (exp(iθ), exp(2πi×q 0+k / p),exp(2πi×q 1+k / p),exp(2πi×q 2+k / p),…,exp(2πi×q (p-2)+k On the other hand, when k=p-1, a complex spreading code b(q,k)=(exp(iθ),1,1,...,1) of length p is generated.

[0086] That is, the primitive root q is assigned as a primitive root for generating a chaotic spreading code, and the integer k is assigned as an identification number for generating a chaotic spreading code, thereby generating a complex spreading code b(q, k).

[0087] Next, the complex spreading section 122 spreads one power signal to be transmitted using a complex spreading code b(q, k) generated with respect to the integer k.

[0088] The receiving side code generating unit 221 of the demodulation processing unit 22 also assigns the primitive root q as the primitive root for generating the extension code, and assigns the integer k as the identification number for generating the extension code, thereby generating a complex extension code. That is, the power supply device 1 and the power receiving device 2 share the primitive root q and the identification number k, and therefore share the complex extension code b (q, k) of length p.

[0089] Here, when Figure 1 When the receiving unit 21 of the power receiving device 2 described in the figure receives the power signal sent from the power supply device 1, the complex despreading unit 222 of the demodulation processing unit 22 despreads the received power signal by using the spread code b(q, k) generated relative to the integer k to obtain the power signal.

[0090] As described above, in this embodiment, the power supply device 1 and the power receiving device 2 share the prime number p. primitive roots q1,q2,…, Any primitive root q in , any integer k among integers 0, 1, 2, ..., p-1, and a predetermined angle θ (typically, θ=0). The complex spreading code b(q, k) is a code having perfect orthogonality and good autocorrelation characteristics.

[0091] (Second Embodiment)

[0092] In the second embodiment, a method of using an almost periodic function code as the spreading code will be described.

[0093] In this embodiment, when k is an integer from 1 to K and is an identifier for identifying K almost periodic function codes, the parameters for respectively determining the K almost periodic function codes are represented by δ+(k-1) / K. Among the K almost periodic function codes, the codes corresponding to the number of users or channels are used for modulation.

[0094] Here, K is N or 2N (N is the code length of the quasi-periodic function code), and δ is preferably a real number greater than 0 and less than 1 / N.

[0095] In the spread spectrum modulation process, such as Figure 1 As shown in (a) of FIG. 1 , the power supply device 1 using the quasi-periodic function code includes a modulation processing unit 12 for modulating the power signal. The modulation processing unit 12 multiplies the power signal by the quasi-periodic function code and outputs a modulated signal. The modulated signal (transmission data) transmitted by the transmission unit 13 may be a primary modulation multiplied by BPSK, QPSK, 16QAM, etc. The modulated signal output from the modulation processing unit 12 is received by the power receiving device 2 via the transmission route and demodulated by the demodulation processing unit 22, and power is supplied to the power receiving unit 23.

[0096] (Third Embodiment)

[0097] In the third embodiment, in the case of multi-carrier transmission, the frequency configuration of the multi-carrier is asynchronous between the multi-carriers, and the frequency interval is an almost periodic frequency configuration with non-equal intervals. Here, the almost periodic frequency configuration refers to a frequency configuration that is also asynchronous between any sub-carriers with respect to the frame time length divided as a signal sequence, including a configuration with non-equal intervals, and the almost periodic frequency (Almost Periodic Frequnecy) refers to the frequency of each sub-carrier on the almost periodic frequency configuration.

[0098] Generally, in OFDM (Orthogonal Frequency Division Multiplexing) as a multi-carrier modulation method, the reduction of PAPR (Peak to Average Power Ratio), which is the ratio of peak to average power, is an important technical issue. In this embodiment, each subcarrier is configured with an asynchronous quasi-periodic frequency relative to the frame time length, so even if the number of carrier multiplexing increases, the PAPR can be suppressed from increasing.

[0099] Figure 3 The diagram is for explaining the modulation processing unit 12 and the demodulation processing unit 22 of the power supply device and the power receiving device in which the frequency arrangement of the multi-carrier is set to the quasi-periodic frequency arrangement.

[0100] The modulation processing unit 12 receives Figure 1 When the baseband unit 11 of (a) receives the power signal, the serial / parallel converter 124 converts the power signal (serial code) into a parallel code having a parallel number corresponding to the multiplexing code length N. The parallel code of the multiplexing code length N becomes the transmission code. In the subcarrier modulation unit 125, quasi-periodic frequency multiplexing modulation is performed according to Formula 1.

[0101] [Formula 1]

[0102] Send code (d1d2d3…d N-1 d N )

[0103] The code sequence (y1y2y3…y N-1 y N )

[0104] Input-output relationship

[0105]

[0106] Here, the expression of the quasi-periodic frequency on the frequency axis is substituted and expressed as follows.

[0107]

[0108] Here,

[0109] A k ,B k : The amplitude value of the kth subcarrier of the quasi-periodic frequency

[0110] P dk : The kth prime number with quasi-periodic frequency

[0111] n:nth root

[0112] I: Imaginary unit

[0113] T: The length of time for signal processing

[0114] The subcarrier modulation unit 125 performs the transmission code (d1d2d3...d N-1 d N ) subcarrier modulation, the output code sequence (y1y2y3…y N-1 y N ) The subcarrier modulation unit 125 performs multicarrier modulation based on the multicarrier assigned by the quasi-periodic frequency configuration generation unit 123.

[0115] The quasi-periodic frequency configuration generating unit 123, for example, comprises: a prime number group storage unit not shown, a calculation / storage unit of the quasi-periodic frequency group, a calculation / storage unit of the reference frequency configuration, and a retrieval / storage unit of the quasi-periodic frequency configuration. The prime number group storage unit stores a plurality of (for example, 10,000,000) prime numbers for calculating the quasi-periodic frequency. The quasi-periodic frequency group calculation / storage unit uses the prime numbers stored in the prime number group storage unit to calculate and store the quasi-periodic frequency. The calculation / storage unit of the reference frequency configuration calculates and stores the reference frequency configuration for determining the quasi-periodic frequency configuration. The retrieval / storage unit of the quasi-periodic frequency configuration retrieves and selects the quasi-periodic frequency close to the reference carrier frequency in the reference frequency configuration according to the quasi-periodic frequency group, determines the quasi-periodic frequency configuration, and stores the determined quasi-periodic frequency configuration.

[0116] In the input-output relationship shown in equation 1, there is an element a k b k ~p k The matrix of (1≦k≦N) is an N×N matrix. In addition, in Formula 1, ρ dk is a prime number used to generate the kth frequency in a quasi-periodic frequency configuration with N carriers. In addition, in Formula 1, θ k is any real number, which can also be 0.

[0117] In addition, in the input-output relationship shown in Formula 1, the element a is not explicitly stated. k bk Elements other than c k ~p k , but will be included in element a k b k A in the definition of k , B k Replace with C k ~P k That's it. k , B k Likewise, C k ~P k is the amplitude value of the kth carrier.

[0118] The subcarrier signal output from the subcarrier modulation unit 125 is allocated to a plurality of subcarriers different from each other in a predetermined frequency band, and is given to the subcarrier as a multicarrier signal (quasi-periodic frequency subcarrier composite signal) configured with quasi-periodic frequencies. Figure 1 The transmission unit 13 of (a) transmits the signal to the power receiving device 2. The serial / parallel converter 124, the subcarrier modulator 125, and the transmission unit 13 operate according to the synchronization signal given from the synchronization signal generator 126.

[0119] The demodulation processing unit 22 includes a subcarrier demodulation unit 224 , a quasi-periodic frequency arrangement generation unit 223 , a parallel / serial conversion unit 225 , and a synchronization signal generation unit 226 .

[0120] Figure 1 The receiving unit 21 in (b) receives an input of a received modulation signal (quasi-periodic frequency subcarrier synthesis signal) and assigns the received modulation signal to the subcarrier demodulation unit 224. The subcarrier demodulation unit 224 performs demodulation by obtaining the quasi-periodic frequency (quasi-periodic frequency configuration for demodulation; quasi-periodic complex carrier) used on the sending side of the received modulation signal and the cross-correlation value (complex correlation value) thereof. The frequency of the quasi-periodic frequency configuration for demodulation is assigned from the quasi-periodic frequency configuration generation unit 223. The cross-correlation value of the signal can be obtained, for example, by the "method of obtaining on the time axis" of Formula 2 or the "method of obtaining based on the cross spectrum" of Formula 3.

[0121] [Formula 2]

[0122]

[0123] [Formula 3]

[0124]

[0125] The signal output from the subcarrier demodulation unit 224 is converted into serial data by the parallel / serial conversion unit 225. The serial data is output as a demodulated power signal to Figure 1The powered portion 23 shown in (b) is supplied with electric power.

[0126] also, Figure 1 The receiving unit 21 , the subcarrier demodulating unit 224 , the quasi-periodic frequency arrangement generating unit 223 , and the parallel / serial converting unit 225 in (b) operate according to the synchronization signal given from the synchronization signal generating unit 226 .

[0127] (Fourth Embodiment)

[0128] Figure 4 (a) is used in Figure 3 A basic circuit structure diagram for transmitting power by setting the quasi-periodic frequency to the resonant frequency of the magnetic field resonance coupling method (magnetic field resonance method) in the multi-carrier of the power signal described in the text. That is, it is a circuit diagram of a series secondary series capacitor method (SS method) in which the modulation processing unit 12 of the power supply device 1 has a primary side circuit and the demodulation processing unit 22 of the power receiving device 2 has a secondary side circuit. Modulation based on the quasi-periodic frequency configuration (signals of different frequencies corresponding to the transmission source) can be achieved by making the frequency consistent with the resonant frequency of the magnetic field resonance method, so the power signal is transmitted through a known basic circuit. In addition, as Figure 4 As shown in (a), the primary side circuit and the secondary side circuit both have the structure of an RLC series circuit, C1 is the resonant capacitor of the primary side circuit, r1 is the line resistance of the primary side circuit, L1 is the reactance of the coil of the primary side circuit, C2 is the resonant capacitor of the secondary side circuit, r2 is the line resistance of the secondary side circuit, L2 is the reactance of the coil of the secondary side circuit, R L is the load of the secondary circuit, L m is the mutual inductance between L1 and L2.

[0129] Figure 4 (b) is an equivalent circuit diagram of the basic circuit structure diagram. Usually, in the case of an equivalent circuit, the leakage inductance -L m With L m Integrated record, but in Figure 4 Here, when the voltage on the primary circuit side (power supply side) is V1 and the voltage on the secondary circuit side (load R L The voltage on the primary side is V2, and the voltage applied by the resonant capacitor C1 of the primary side circuit is V C1 The voltage applied by the reactance L1 of the coil of the primary circuit is V L1 The voltage applied by the line resistance r1 of the primary circuit is V r1 The voltage applied by the resonant capacitor C2 of the secondary circuit is V C2 The voltage applied by the reactance L2 of the coil of the secondary circuit is VL2 The voltage applied by the line resistor r2 of the secondary circuit is V r2 , the output voltage of the primary circuit is V Lm1 , the input voltage of the secondary circuit is V Lm2 When , the voltage of the primary side circuit and the voltage of the secondary side circuit are expressed as Formula 4 and Formula 5, but can also be further transformed into Formula 6 and Formula 7.

[0130] [Formula 4]

[0131] V1=V L1 +V C1 +V r1 +V Lm1

[0132] [Formula 5]

[0133] 0 = V L2 +V C2 +V r2 +V2+V Lm2

[0134] [Formula 6]

[0135]

[0136] [Formula 7]

[0137]

[0138] Furthermore, the resonance condition of the secondary side circuit is expressed by equation 8, and the resonance frequency of the primary side circuit is expressed by equation 9.

[0139] [Formula 8]

[0140]

[0141] [Formula 9]

[0142]

[0143] When the resonant frequencies of the primary side circuit and the secondary side circuit are made the same, the resonant frequency is as shown in Formula 10.

[0144] [Formula 10]

[0145]

[0146] When equation 10 is satisfied, a power signal of a predetermined quasi-periodic frequency transmitted from a power supply device 1 having a primary circuit can be received only by a power receiving device 2 having a secondary circuit that resonates with the power signal of the quasi-periodic frequency.

[0147] Figure 5The power supply device 1 transmits a plurality of quasi-periodic frequencies (f1, f2, f3 ... f m ) and receiving power from a plurality of power receiving devices 2a, 2b, 2c and 2m having resonance circuits corresponding to the respective quasi-periodic frequencies. Even if the power supply device 1 performs modulation based on the quasi-periodic frequency configuration and transmits a signal having the plurality of quasi-periodic frequencies (f1, f2, f3 ... f m ) power signal, and since each of the power receiving devices 2a, 2b, 2c and 2m has a secondary side circuit (resonant circuit) that resonates only with a predetermined quasi-periodic frequency in each power signal, the demodulation processing unit can receive only the power signal with the predetermined quasi-periodic frequency (at Figure 4 In the example, the power receiving device 2a is f1, the power receiving device 2b is f2, the power receiving device 2c is f3, and the power receiving device 2m is f m ).

[0148] As described above, also by the magnetic field resonance method, only a desired power signal can be recognized on the power receiving device 2 side, and power can be received selectively.

[0149] <Power supply system>

[0150] Below, through Figure 6 to Figure 32 , the structure of the power supply system disclosed in this specification is explained.

[0151] (First Embodiment)

[0152] Figure 6 It is the basic structure of the power supply system. Figure 1 The power supply device 1 described in (a) is provided to Figure 1 The power receiving device 2 described in (b) transmits a power signal, and a transmission path 3 is provided. Hereinafter, in this embodiment, a power supply system based on wireless transmission will be described, and therefore the transmission path 3 represents a frequency band.

[0153] Hereinafter, the power supply system disclosed in this specification will be described by taking as an example a case where the power supply device 1 and the power receiving device 2 are mobile bodies. Figure 7(a) is an embodiment in which the mobile object is a smartphone, and shows a case where a modulated signal, i.e., an electric power signal, is sent from the smartphone Ms on the power supply side to the smartphone Mr on the power receiving side through the power supply base station B. In addition, as a variation of this embodiment, it can also be set that the smartphone Ms connected to the information communication base station on the information communication network sends power supply instruction data to the smartphone Mr in a remote location through the information communication base station, and according to the power supply instruction data, power is supplied from the power supply base station B within the range where the smartphone Mr can receive power (not shown). In this case, the power supply base station B itself is also connected to the information communication network so as to be able to receive the power supply instruction data. In addition, it can also be set that multiple power supply base stations B are connected to the information communication network, and any power supply base station B can receive the power supply instruction data, and supply power from the power supply base station B that is most suitable for the smartphone Mr as the power receiving object (usually the power supply base station B that is closest to the smartphone Mr). Figure 7 (b) is an example in which the moving object is a car, and shows a case in which a power signal is transmitted from a moving power supply-side car Cs to a power receiving-side car Cr moving in the same direction. Figure 7 (c) is an embodiment in which the mobile body is an unmanned aerial vehicle (UAV), and shows a case where a power signal is sent from a power generation device G to a UAV Fr. As shown in this embodiment, in particular, when power is supplied to a mobile body, the possibility of crosstalk, so-called power hacking based on disguise, etc., becomes high, but in the power supply of the power signal involved in the disclosure of this specification, by using a chaotic extension code, it has anti-fading properties, and reliable power supply can be performed with high security.

[0154] In addition, as in Figure 8 As shown in , various responses can be made to the power supply mode of the mobile object. Hereinafter, a car will be described as an example of the mobile object. Figure 8 In (a), power is supplied from power supplying cars Cs1, Cs2 and Cs3 (3 cars) to power receiving car Cr1 via power supply base station B. That is, power can be supplied from multiple power supplying cars to a single power receiving car, and in this case, a "many-to-1" power supply relationship is formed.

[0155] Figure 8 In (b), power is supplied from power supply side car Cs4 (1 car) to power receiving side cars Cr2, Cr3 and Cr4 (3 cars) via power supply base station B. That is, power can be supplied from a single power supply side car to multiple power receiving side cars, and in this case, a "one-to-many" power supply relationship is formed.

[0156] In addition, although not shown in the figure, a "many-to-many" power supply relationship including both the "many-to-1" and "1-to-many" relationships also exists. The disclosure of this specification can signal the supplied power and send it together with the information signal, so it can exert a significant effect that did not exist in the past: that is, it is possible to supply power from multiple moving cars (moving bodies) to multiple moving cars (moving bodies) at the same time.

[0157] Figure 8 (c) in the figure is a schematic diagram of a case where the power supply side car Cs5 supplies power to the moving power receiving side car Cr5 through the power supply base station B1. When the power supply side car Cs5 starts to supply power to the power receiving side car Cr5, the car passes through the cell R1 of the power supply base station B1. However, when the car moves to the cell R2 of the power supply base station B2 during the power supply, the modulation signal is inherited from the power supply base station B1 to the power supply base station B2 through the so-called soft handover, and the power supply to the power receiving side car Cr5 is continued. In addition, although not shown in the figure, when the power supply side car Cs5 moves from the cell R1 to the cell R2 during the power supply and supplies power to the power receiving side car Cr5, the power supply is also continued through the soft handover.

[0158] (Second Embodiment)

[0159] Fig. 9 The power supply device 1 includes an information generation unit 14 that generates an information signal related to the power signal. The information signal generated by the information generation unit 14 is multiplexed with the power signal generated by the baseband unit 11 and generated as a modulated signal by the modulation processing unit 12.

[0160] The communication data d of the modulated signal generated from the power signal and the information signal has Fig.10 That is, the communication data d includes a fixed-length header d1 including transmission source information, transmission destination information, length information, etc., and a variable-length data portion d2, and the data portion d2 includes information data d21 and power data d22.

[0161] (Third Embodiment)

[0162] Fig.11 1 is a block diagram of a third embodiment of a power supply system. The power receiving device 2 that receives the modulated signal has a display unit 24 that displays the information signal obtained together with the power signal as at least any of visible information and audible information after the demodulation processing by the demodulation processing unit 22. The display unit 24 may be, for example, a display, a speaker, or the like.

[0163] like Fig.12As shown, the display unit 24 displays predetermined information related to the power signal according to the information signal. Fig.12 In the figure, receiver information 24a, source information 24b, environmental value information 24c, electric energy information 24d, and billing information 24e are exemplarily displayed. Here, "environmental value information" refers to, for example, information indicating an environmental value certificate obtained by a certificate issuing company and securitized by a third-party certification authority for the environmental added value of electricity generated by natural energy.

[0164] (Fourth Embodiment)

[0165] Fig.13 It is a block diagram of the structure of the fourth embodiment of the power supply system. Fig.13 In the example, the information generation unit 14 of the power supply device 1 generates a cipher signal, and the modulation processing unit 12 generates an encrypted modulation signal. The power receiving device 2 demodulates the encrypted modulation signal through the demodulation processing unit, and decrypts it in the decryption processing unit 25 to return a plain text. By inserting such a process, the so-called power hacking can be prevented.

[0166] (Fifth Embodiment)

[0167] Fig.14 It is a block diagram of the structure of the fifth embodiment of the power supply system. Fig.14 In the example, there is a setting unit 26, which preliminarily accepts only power signals based on the specified power supply condition information in the power receiving device 2. As the information signal generated by the information generating unit 14 of the power supply device 1, the power supply condition information signal is included. When the power supply condition information signal is received by the receiving unit 21 of the power receiving device 2, it is determined whether the power supply condition information signal is a power signal based on the power supply condition set by the setting unit 26, and only when it is a power signal based on the set power supply condition, the received modulated signal is demodulated in the demodulation processing unit 22. In addition, here, the power supply condition information refers to, for example, power generation source certification information (power supply condition information for receiving only power from a specified power generation source) for proving whether the supplied power is generated by renewable energy or fossil energy, power fee information (power supply condition information for receiving only power at a specified power fee), etc., but is not limited thereto. That is, any condition that helps to determine whether the consumer end accepts power reception from the power supply device 1 is sufficient.

[0168] like Fig.15As shown, for example, in a case where a car C1 as a power receiving device receives power generation source certification information signals from power plants G1 and G2 as power supply devices, when the power generation source certification information of power plant G1 is based on fossil energy and the power generation source certification information of power plant G2 is based on renewable energy (for example, solar energy), if the car C is set in the setting unit 26 to only accept power signals from renewable energy sources, then the reception of the power signal from power plant G1 is rejected and only the power signal from power plant G2 is received.

[0169] (Sixth Embodiment)

[0170] Fig.16 The power receiving device 2 includes a power receiving side transmitter 27 for transmitting a power supply request signal to a predetermined power supply device 1, and the power supply device 1 includes a power supply side receiver 15 for receiving the power supply request signal.

[0171] When the power supply side receiving unit 15 receives the power supply request signal from the power receiving side transmitting unit 27 via a communication transmission route such as a network, the reception of the power supply request signal is used as a trigger to start an oscillation circuit (not shown) and generate a power signal in the baseband unit 11 .

[0172] The power supply request signal may be transmitted from the power receiving side transmitting unit 27 when a predetermined threshold value is reached in the power receiving device 2. The predetermined threshold value may be at least the remaining amount of power stored in the power receiving device 2, the usage time of the power receiving device 2, etc. For example, when the load connected to the power receiving device 2 side is a type of equipment that requires constant operation, the remaining amount of power stored, the usable time relative to the charged amount, etc. may be measured, and the predetermined remaining amount of power stored and the predetermined accumulated usage time may be set as threshold values ​​in advance, and the power supply request signal may be transmitted when the reaching of the threshold value is detected.

[0173] Fig.17 The portable vital sign data measuring device V is mounted on the arm of the measured person, for example. When the measured person is indoors, the charging unit of the portable vital sign data measuring device V is connected to a power receiving device (not shown), and the remaining amount of power stored in the charging unit and the accumulated usage time are detected. When a predetermined threshold is reached, a power supply request signal Ds1 is sent to the power supply device 1A indoors. In addition, when the measured person is outdoors, similarly, when a predetermined threshold is reached, a power supply request signal Ds2 is sent to the power supply device 1B outdoors.

[0174] Vital sign data (e.g., blood sugar level, blood pressure level, etc.) can be used to make accurate medical judgments by continuously measuring how they change with changes in the environment. However, it is extremely troublesome for the moving subject to constantly check the battery status of the portable vital sign data measuring device V. On the contrary, when the specified remaining battery level or accumulated usage time is reached, even if an alarm is sounded, charging cannot be performed in the absence of a charging device, which hinders the continuous measurement. Therefore, as shown in the present embodiment, automatic charging can be performed without operation based on the subject, so that the continuous measurement can be achieved. In addition, in Fig.17 In the figure, an example is shown in which there is only one person being measured, but for multiple persons being measured, for example, the power supply request signal can be associated with the ID signal of each person being measured to distinguish each person being measured, and power supply corresponding to each person being measured can be performed from one power supply device.

[0175] In addition, since various devices can be powered at multiple frequencies, the charging devices held by the various devices can be miniaturized (lightened). For example, if the device is a smartphone, the usage time can be extended even if it is smaller. If it is a mobile object such as a car or an unmanned aerial vehicle, the cruising range can also be extended.

[0176] (Seventh Embodiment)

[0177] Fig.18 is a block diagram of a seventh embodiment of a power supply system. Fig.16 As described in the above, when the power supply side receiving unit 15 of the power supply device 1 receives a power supply request signal from the power receiving device 2, in order to determine whether to allow power supply to the power receiving device 2 that sent the power supply request signal, the authentication processing unit 16 performs authentication processing. Therefore, the power receiving device 2 sends the authentication information (for example, ID, password) required for the authentication processing together with the power supply request signal (not shown).

[0178] In addition, in addition to waiting for the power supply request signal from the power receiving device 2 to be processed, the authentication process can also be configured to request the power receiving device 2 that has received the modulated signal from the sending unit 13 of the power supply device 1 by the receiving unit 21 to send the authentication information, and perform the authentication process after the power supply side receiving unit 15 receives the authentication information (not shown).

[0179] (Eighth Embodiment)

[0180] Fig.19 1 is a block diagram of the structure of the eighth embodiment of the power supply system. The power supply device 1 includes a power supply condition processing unit 17. Fig.18In the authentication processing unit 16 described in the foregoing, the power supply condition of the power receiving device 2 is made different between the power receiving device that has passed the authentication and the power receiving device that has not passed the authentication. The power supply condition processing unit 17 generates various power signals from the baseband unit 11 according to different power supply conditions in accordance with whether the authentication is allowed or not. For example, the following processing can be performed: that is, when a power signal is transmitted to all cars passing through a predetermined location such as a so-called drive-thru, the authentication processing unit 16 distinguishes between members and non-members of the store providing the drive-thru, and the power supply condition processing unit 17 makes the amount of power supplied to each car different, etc.

[0181] Fig. 20 An example of processing in the power supply condition processing unit 17 is shown. Fig. 20 (a) in the figure is a diagram showing a state in which the solar photovoltaic power generation device group G3, which is a power supply device installed in a predetermined passing area (road R), performs processing to change the power supply conditions in a manner that makes the billing of the power supplied from the solar photovoltaic power generation device group G3 different between the car C1, which is a power receiving device that frequently uses the road R, and the car C2, which occasionally uses the road R. That is, the car C1 has signed a renewal contract and has an ID as a contractor, so it passes authentication in the authentication processing unit 16, and is processed in the power supply condition processing unit 17 to be billed at the discounted rate on the renewal contract. On the other hand, the car C2 does not have an ID as the contractor, so it does not pass authentication in the authentication processing unit 16, and is processed in the power supply condition processing unit 17 to be billed at the normal rate.

[0182] in addition, Fig. 20 In (b), when the solar power generation device G4 as the power supply device supplies power to each power receiving device (car C1, car C2, fixed device U1, fixed device U2) at the power supply destination, the authentication processing unit 16 performs authentication processing on each of the power receiving devices to identify each of them, and in the power supply condition processing unit 17, the power supply priority is given, and the power supply amount of each power receiving device can be changed. That is, the total power supply amount of the solar power generation device G4 at a certain point in time is not evenly distributed proportionally to the four power receiving devices at the power supply destination, but power can be supplied with different power supply amounts according to the priority. In this embodiment, it is shown that of the total power supply amount that can be supplied by the solar power generation device G4, 10% is transmitted to the car C1, 20% is transmitted to the car C2, 40% is transmitted to the fixed device U1, and 30% is transmitted to the fixed device U2.

[0183] (Ninth Embodiment)

[0184] Fig.211 is a block diagram of a ninth embodiment of the power supply system. The power supply device 1 includes a selection unit 18, which, when receiving the power receiving side state information from the power receiving side transmission unit 27 of the power receiving device 2, checks the power supply side state information of the power supply device 1, and selects the power receiving device 2 that has transmitted the power receiving side state information having a predetermined relationship with the power supply side state information as the power supply destination. Here, the state information refers to information that changes over time, such as the position of the mobile body (the distance between the power supply device 1 and the power receiving device 2), time (for example, sunshine time when the power supply means is renewable energy), and the amount of change in position (the moving speed when the power supply device 1 and the power receiving device 2 are mobile bodies). In addition, the predetermined relationship refers to a relationship that enables efficient power supply, such as when the power supply device 1 and the power receiving device are mobile bodies and move in the same or similar moving directions.

[0185] Fig. 22 The figure shows the prescribed relationship in the state information by taking the moving direction of the moving body as an example. That is, the figure shows a state in which, when the power supply side car C1 is moving in a prescribed direction, there are the power receiving side car C2 moving in the same direction as the power supply side car C1 and the power receiving side car C3 moving in the opposite direction to the power supply side car C1. In this case, the selection unit 18 of the power supply side car C1 receives the power receiving side state information indicating that the car is moving in the same direction from the power receiving side car C2, and receives the power receiving side state information indicating that the car is moving in the opposite direction from the power receiving side car C3. The selection unit 18 checks its own power supply side state information with the two power receiving side state information, determines that the power receiving side state information of the power receiving side car C2 has the prescribed relationship of moving in the same direction, and selects the power receiving side car C2 as the power supply destination. On the other hand, the receiving car C3 that has issued the receiving state information indicating that it is traveling in the opposite direction determines that it is not a state to be selected as a power supply destination from the viewpoint of efficiency after comparing the relationship with the receiving car C2, and the power supplying car C1 refuses power supply.

[0186] (Tenth Embodiment)

[0187] Fig.23This is a block diagram showing the structure of a power receiving and power supplying device 4 constituting the tenth embodiment of the power supply system. The power receiving and power supplying device 4 is capable of receiving power from the power supplying device 1 and supplying power to the power receiving device 2. It mainly functions as a relay device (node) in the power supply network to be described later. The structure of the power receiving and power supplying device 4 has the same structure as the power supplying device 1 and the power receiving device 2. That is, the power receiving unit 41 of the power receiving and power supplying device 4 has a receiving unit 413, a demodulation processing unit 412, and a powered unit 411, and the power supply unit 42 has a baseband unit 421, a modulation processing unit 422, and a transmitting unit 423 (In addition, in this embodiment, the same method as the first embodiment is illustrated, but it may also be a structure that is the same as the structure of the second to ninth embodiments.).

[0188] The power receiving and supplying device 4 according to the present embodiment may also include a power storage unit 43 for storing a part or all of the received electricity. The power storage unit 43 can store the power received by the power receiving and supplying device 4 in the power storage unit 43 and supply power to other power receiving devices 2 and the power receiving and supplying device 4 at any time.

[0189] Fig.24 This is a first variation of the power receiving and power supplying device 4 according to the tenth embodiment. This variation at least comprises: a log information generating unit that generates information about the power receiving source and the power received, and information about the power supply destination and the power supply amount according to a predetermined time unit; and a calculating unit that calculates the difference between the power received and the power supply amount. Fig.25 As shown, at a certain time (t3), when the power receiving and power supplying device 4 receives power Pi1 and power Pi2 and stores them in the power storage unit 43 while supplying power Po1 and power Po2, the log information generating unit 44 generates log information related to power receiving and power supply, and the calculating unit 45 calculates the difference between the power receiving amount and the power supply amount. In this way, the power receiving and power supplying device 4 sequentially calculates the power receiving and power supply amount as a node of the power supply network described later, so that data that helps to dynamically measure the power supply efficiency of the entire power supply network can be provided.

[0190] Fig.26 This is a second modification of the power receiving and power supplying device 4. The power receiving and power supplying device 4 includes a control unit 46 that distributes the received power to the plurality of load devices supplied from the power receiving and power supplying device 4 as needed. In addition, the control unit 46 distributes power to supplement the power distributed to the plurality of load devices from the existing power distribution equipment other than the power receiving and power supplying device 4.

[0191] Fig. 27: is a diagram showing a specific embodiment of the second variant. That is, an embodiment in which a power receiving and power supplying device 4 is provided in the so-called smart home H. The control unit 46 of the power receiving and power supplying device 4 supplies power to the load devices L1 to L3 (in this variant, L1 is a refrigerator, L2 is a TV, and L3 is a cooling and heating machine) used in the smart home. In addition, the control unit 46 distributes the power to supplement the power distributed to the load devices L1 to L3 from the existing distribution equipment (the existing distribution equipment supplied from the solar panel Sp and the power company's distribution line through the distribution board Db). For example, the control unit 46 can also monitor the excess of the ampere capacity with the existing power contract, and in the case of a possible excess, only switch the specified load device and accept the power supply from the power receiving and power supplying device 4. In addition, the control unit 46 can also monitor the power usage of the entire smart home H and control the standby power of various load devices. In addition, the control unit 46 can also monitor the power usage of the entire smart home H and operate the power supply unit 42 in order to sell the surplus power. In this case, the information of the power selling destination can be known through the log information generating unit 44 and the calculating unit 4 .

[0192] In addition, the power receiving and power supplying device 4 may be a form in which the power receiving unit 31 and the power supplying unit 42 are integrated, or a form in which the power receiving unit 41 and the power supplying unit 42 are separate bodies connected together.

[0193] (Eleventh Embodiment)

[0194] Fig.28 This is a block diagram of the structure of the eleventh embodiment of the power supply system. In this embodiment, there is a collection and distribution server 6, which includes a collection unit 61 that forms a plurality of power supply devices 1, power receiving devices 2, and power receiving and power supply devices 4 in a predetermined area into a cluster CL1 and collects the power supply power of the cluster CL1, and a distribution control unit 62 that supplies the collected power supply power to other clusters CL2 and CL3.

[0195] In addition, Fig.28 In the present invention, each power supply device 1, power receiving device 2 and power receiving and power supply device 4 is equipped with a meteorological observation and detection unit 5, which detects various meteorological data at their respective locations. The meteorological data is, for example, temperature data, humidity data, air pressure data, wind direction data, sunshine time data, and crustal movement data, but is not limited thereto. The meteorological observation and detection unit 5 is powered by the power supply device 1 or the power receiving and power supply device 4 in a manner that is always in operation. In addition, the collection and distribution server 6 has: a storage unit 63 that stores the meteorological data detected by each meteorological observation and detection unit 5; and a power demand prediction unit 64 that predicts the excess / deficient power data of other cluster units based on the accumulated meteorological data. The power demand prediction unit 64 can predict the power demand of the cluster unit by using, for example, past data related to changes in meteorological data and power usage.

[0196] The distribution control unit 62 estimates excess / deficit data based on the power demand predicted by the power demand prediction unit 64 , and supplies power to the cluster predicted to be short of power.

[0197] In addition, in this embodiment, as the elements constituting the collection and distribution server 6, the collection unit 61, the distribution control unit 62, the storage unit 63, and the power demand prediction unit 64 are described, but it is also possible to have a structure in which each is connected together as a separate device. In addition, in this embodiment, the example of the meteorological observation detection unit 5 detecting meteorological observation data is described, but it is not limited to meteorological observation data, and it is also possible to have a structure (data detection unit) that detects satellite data and other data that contributes to the power demand prediction.

[0198] Fig.29 It is formed in smart cities Fig.28 A specific embodiment of the power supply system described in the embodiment of FIG. CL1 to CL4 are formed, and the power supply device 1, the power receiving device 2 and the power receiving and power supply device 4 constituting each cluster are Fig. 27 In addition to the smart home described in the embodiment, it can also be a mobile object that temporarily exists in the cluster, such as a car. As in the present embodiment, if a smart city is formed, it is possible to provide effective and timely support for power supply in regional (cluster) units when other regions (clusters) are affected by disasters. In the present embodiment, the state in which clusters CL1 to CL3 provide power supply support to cluster CL4 is shown. In addition, as in cluster CL3, cluster CL4 can be powered directly without going through the collection and distribution server 6.

[0199] According to the present embodiment, since a large amount of weather data at a micro level can be acquired, it can be expected to contribute to improving the accuracy of weather forecasts.

[0200] In this embodiment, the collection distribution server 6 is installed in an area not belonging to any cluster, but it may be installed in any cluster. In either case, various devices (especially mobile objects) can be powered around the location where the collection distribution server 6 is installed.

[0201] In addition, the Fig.17 The data obtained by the portable vital sign data measuring device V described in the above can be used to determine regional characteristics related to health by acquiring and summarizing the vital sign data of residents in different regions, which can be expected to contribute to medical measures.

[0202] (Twelfth Embodiment)

[0203] Figure 30 to Figure 32This is a schematic diagram of a power supply network for explaining the twelfth embodiment of the power supply system. The power supply system involved in this embodiment has a computing unit that estimates a channel in order to form a power supply network in which a power supply device supplies power to a power receiving device through a plurality of power receiving power supply devices (nodes). In addition to a server dedicated to the computing unit, the computing unit can also be estimated through P2P communication (hereinafter, in this embodiment, the computing unit is not shown in the figure.).

[0204] Fig.30 is a schematic diagram showing a supply system Sn1 based on the shortest path selection of the power supply system. In the calculation unit, the shortest distance channel in the power supply path from the power supply device 1A to the power receiving device 2A is estimated. The shortest distance calculation can be performed using a well-known algorithm (for example, Dijkstra's algorithm). The shortest distance sometimes changes dynamically according to the setting of new nodes, but basically, since the power supply path can be determined before power supply, it can be fixedly set in advance. In this embodiment, the shortest distance power supply network Sn1 is formed from the power supply device 1A through the power receiving power supply device 41A, the power receiving power supply device 42A, the power receiving power supply device 43A and the paths W1, W2, W3 and W3 between the power receiving device 2A. In addition, the power receiving power supply devices 41A to 43A can receive transaction fees (hereinafter referred to as transaction fees) generated by power supply. Fig.31 , Fig.32 In this method, a long-distance power supply path can be formed in units of short distances, thereby improving power supply efficiency.

[0205] Fig.31 The calculation unit selects the path W1 from the power supply device 11B as the optimal path at time t1 as the power supply path to the power receiving device 2A ( Fig.31 (A) in the figure), and the paths W2 and W3 passing through the power receiving and power supplying device 41B and the power receiving and power supplying device 42B are selected as the optimal paths at time t2 ( Fig.31 (B) in the figure, the paths W4, W5, W2, and W3 passing through the power supply device 12B, the power receiving power supply device 43B, the power receiving power supply device 41B, and the power receiving power supply device 42B are selected as the optimal paths at time t3 ( Fig.31 (C) in the.

[0206] In this embodiment, the operation unit measures the power consumption in multiple channels of the power supply network Sn2, and dynamically changes the path according to the power supply margin data, so that the path changes dynamically as time t1 to t3 passes. In addition, in the case of this method, at least the power receiving and power supply device located in the middle of the path is in a standby state as a node, so it is equipped with a power storage unit. In particular, when the demand forecast of the entire power supply network is improved, the optimal amount of power is stored, and the power supply efficiency is improved. In particular, the power supply efficiency is improved in the case of many-to-many power supply.

[0207] Fig.32 This is a schematic diagram showing a supply network determined based on route selection according to priority conditions of the power supply system. Fig.32 The power supply network Sn3 in (A) is a schematic diagram showing the path selection according to the priority condition on the power receiving device 2A side. On the power receiving device 2A side, for example, when the priority condition is set to give priority to the power supply of the renewable energy promotion enterprise, the computing unit performs the path selection according to the priority condition (as in Fig.14 , Fig.15 In the present embodiment, when the power receiving device 2A sets a predetermined priority condition, the operation unit selects the paths Wp1, Wp2, Wp3, Wp4, and Wp5 passing through the power supply device 1C, the power receiving power supply device 41C, the power receiving power supply device 42C, and the power receiving power supply device 44C.

[0208] Fig.32 The power supply network Sn4 in (B) is a schematic diagram showing the path selection according to the priority condition on the power supply device 1D side. For example, the power supply device 1D is connected to the weather forecast server 7 through the network I. When receiving information (signal) related to the disaster forecast of the area where the power receiving device 2A is located from the server 7, the reception is used as a trigger, the operation unit is started, and the optimal path from the power supply device 1D to the power receiving device 2A is calculated. In this embodiment, when the power supply device 1D sets the prescribed priority condition, the operation unit selects the paths Wp6, Wp7, Wp8, Wp9, and Wp10 passing through the power supply device 1D, the power receiving power supply device 41D, the power receiving power supply device 42D, and the power receiving power supply device 44D.

[0209] In this embodiment, the activation of the computing unit is triggered by the reception of a signal from the server 7, but the computing unit may be activated and the priority condition may be set independently of an external signal. In addition, for example, the power receiving and power supply device 44D may be installed in a medical facility, a disaster response headquarters, a public shelter, etc.

[0210] As described above, the power supply device and the power supply system disclosed in this specification are transmitted after encoding the power signal in advance, so the robustness is high and the power can be supplied with a good SN ratio. In addition, according to the encoding, multiple power signals can be transmitted without interfering with each other, so the anti-fading performance is high and it is suitable for radiative wireless power transmission between multiple mobile bodies (many to 1, 1 to many, many to many).

[0211] Description of Reference Numerals

[0212] 1: Power supply device

[0213] 2: Power receiving device

[0214] 11: Baseband

[0215] 12: Modulation processing unit

[0216] 13: Sending Department

[0217] 14: Information Generation Department

[0218] 15: Power supply side receiving part

[0219] 21: Receiving Department

[0220] 22: Demodulation processing unit

[0221] 23: Power supply part

[0222] 24: Display unit

[0223] 25: Decryption processing unit

[0224] 26: Setting Department

[0225] 27: Transmitter on the receiving side

Claims

1. A power supply device that transmits a power signal to supply power to a power receiving device and transmits and receives data related to the transmission, comprising: A baseband unit, generating the power signal; a modulation processing unit that modulates the power signal so as to impart a code that specifies a transmission source of the power signal generated by the baseband unit, and generates a modulated signal that can be demodulated by the power receiving device; as well as a transmitting unit that transmits the modulated signal generated by the modulation processing unit to the power receiving device in a non-contact manner, The modulation processing unit comprises: A code generator on the transmission side generates a complex spreading code common to the power receiving device based on a primitive root of a predetermined prime number and an identification number of an integer used to generate the chaotic spreading code with constant power, in order to generate the chaotic spreading code with constant power as the code by spread spectrum modulation processing, and multiplies the complex spreading code by the power signal; and The complex spreading unit spreads the power signal using the complex spreading code.

2. The power supply device according to claim 1, wherein: The modulation processing unit assigns a spreading code based on K quasi-periodic frequencies determined by a parameter represented by δ+(k-1) / K as the spreading code to the power signal generated by the baseband unit and multiplies the spreading code to generate a modulated signal that can be demodulated by the power receiving device, and the transmission unit transmits the modulated signal generated by the modulation processing unit to the power receiving device in a non-contact manner, Wherein, k is an integer from 1 to K and is an identifier for identifying K quasi-periodic function codes, K is N or 2N, where N is the code length of the quasi-periodic function code, and δ is a real number greater than 0 and less than 1 / N.

3. The power supply device according to claim 1, wherein: The modulation processing unit comprises: a serial / parallel conversion unit, wherein the modulation processing unit converts the power signal as a serial code into a parallel code having a parallel number corresponding to a predetermined multiplexing code length when transmitting using a multi-carrier whose frequency configuration is set to an quasi-periodic function configuration in order to generate the modulation signal using an quasi-periodic function that determines the power signal of at least one power transmission source; a subcarrier modulation unit that performs subcarrier modulation of a parallel code of the predetermined multiplexing code length and outputs a multicarrier signal configured at a quasi-periodic frequency represented by the code sequence transmitted by the transmission unit; as well as a substantially periodic function configuration generating unit, which assigns a multi-carrier to the subcarrier modulation unit, The transmitting unit allocates subcarrier signals to a plurality of subcarriers different from each other in a predetermined frequency band, thereby transmitting the multicarrier signal as a quasi-periodic frequency subcarrier composite signal using multicarriers.

4. The power supply device according to claim 3, wherein: In the modulation processing unit, the predetermined quasi-periodic frequency of the power signal is a resonance frequency of a magnetic field resonance method.

5. The power supply device according to any one of claims 1 to 4, wherein: A power supply side receiving unit is provided for receiving a power supply request signal from the power receiving device, and a circuit for generating the power signal generated by the baseband unit is activated by receiving the power supply request signal.

6. A power supply system comprising: The power supply device according to any one of claims 1 to 5, comprising: a baseband unit that generates a power signal; a modulation processing unit that modulates the power signal to impart a code that specifies a transmission source of the power signal generated by the baseband unit and generates a modulated signal that can be demodulated by a power receiving device; and a transmission unit that transmits the modulated signal generated by the modulation processing unit; as well as The power receiving device comprises: a receiving unit for receiving the modulated signal through a predetermined transmission path; and a demodulation processing unit for demodulating the received modulated signal; and a power receiving unit that receives power from the power signal obtained through the demodulation process.

7. The power supply system according to claim 6, wherein: At least one of the power supply device or the power receiving device is a mobile object.

8. The power supply system according to claim 7, wherein: The power signal is simultaneously transmitted from the power supply device to a plurality of moving objects including the moving moving object.

9. The power supply system according to claim 7 or claim 8, wherein: The power signal supplies power to the moving object through a power supply base station.

10. The power supply system according to claim 9, wherein: A plurality of power supply base stations capable of transmitting and receiving the power signals to each other are inserted, and the plurality of power supply base stations are connected via an information communication network.

11. The power supply system according to any one of claims 6 to 8, wherein: The power supply device includes an information generating unit configured to generate a predetermined information signal related to the power signal, and the modulation processing unit modulates the information signal together with the power signal to generate the modulated signal.

12. The power supply system according to claim 11, wherein: The power receiving device includes a display unit, and the display unit displays the information signal.

13. The power supply system according to claim 12, wherein: The information signal includes at least one of a transmission source information signal, an electric power information signal, a billing information signal, and an environmental value information signal.

14. The power supply system according to claim 12, wherein: The information signal includes an encrypted signal, and the power receiving device having received the encrypted signal includes a decryption processing unit, and the decryption processing unit decrypts the encrypted signal.

15. The power supply system according to claim 12, wherein: The information signal includes a power feeding condition information signal, and the power receiving device having received the power feeding condition information signal includes a setting unit configured to receive only a power signal transmitted together with a predetermined power feeding condition information signal.

16. The power supply system according to claim 12, wherein: The power receiving device includes a power receiving side transmitting unit, which transmits a power supply request signal to the power supply device. The power supply device includes a power supply side receiving unit, which receives the power supply request signal. When the power supply side receiving unit receives the power supply request signal, the circuit that generates the power signal generated by the baseband unit is started.

17. The power supply system according to claim 16, wherein: The power supply request signal is sent when a prescribed threshold is reached.

18. The power supply system according to claim 17, wherein: The predetermined threshold value is at least one of a remaining amount of power stored in the power receiving device and a predetermined usage time of the power receiving device.

19. The power supply system according to claim 12, wherein: The power supply device includes an authentication processing unit that performs authentication processing when requesting authentication information for power reception from the power receiving device and receiving the authentication information from the power receiving device.

20. The power supply system according to claim 19, wherein: The power supply device includes a power supply condition processing unit configured to change power supply conditions between a power receiving device authenticated by the authentication process and a power receiving device not authenticated.

21. The power supply system according to claim 12, wherein: The power supply device includes a selection unit that, when receiving power receiving side state information transmitted from the power receiving device, checks the power supply side state information with the power supply side state information of the power supply device, selects the power receiving device that has transmitted the power receiving side state information having a predetermined relationship with the power supply side state information, and transmits the power signal.

22. The power supply system according to claim 6, wherein: A power receiving and power supplying device is provided, the power receiving and power supplying device being capable of receiving power from the power supplying device and supplying the received power to another power receiving device.

23. The power supply system according to claim 22, wherein: The power receiving and power supplying device includes a power storage device that stores a part or all of the received power.

24. The power supply system according to claim 22, wherein: The power receiving and power supplying device includes at least: a log information generating unit generating information of a receiving power source, a received power amount, information of a power supply destination, and a power supply amount per predetermined time unit; and a calculating unit calculating a difference between the received power amount and the power supply amount.

25. The power supply system according to claim 22, wherein: The power receiving and feeding device includes a control unit that distributes received power to a plurality of predetermined load devices as needed and distributes power to supplement power distributed to the load devices from existing power distribution equipment other than the power receiving and feeding device.

26. The power supply system according to claim 22, comprising: a collecting unit that groups the plurality of power supply devices, power receiving devices, and power receiving and power supply devices into a plurality of clusters in a predetermined area unit, and collects the power supply power in the cluster unit; and The distribution control unit supplies the collected power for supply to other clusters.

27. The power supply system according to claim 26, comprising: a storage unit that supplies power so that a data detection unit provided in each power supply device, power receiving device, and power receiving and power supply device constituting the cluster is always operated, and stores data detected by the data detection unit; and The power demand prediction unit predicts excess / deficit data of power in cluster units based on the stored data. The distribution control unit supplies electric power to the cluster based on excess / deficit data predicted by the electric power demand prediction unit.

28. The power supply system according to claim 27, wherein: The data detected by the data detection unit is at least one of weather observation data and satellite data.

29. The power supply system according to claim 22, wherein: A calculation unit is provided for calculating a path to form a power supply network for supplying power from the power supply device to the power receiving device via the plurality of power supply devices.

30. The power supply system according to claim 29, wherein: The calculation unit estimates a shortest path from the power supply device to the power receiving device in the power supply network.

31. The power supply system according to claim 29, wherein: The calculation unit measures power consumption in a plurality of paths of the power supply network and dynamically changes the paths based on power supply margin data.

32. The power supply system according to claim 29, wherein: The calculation unit estimates a route of the power supply network according to a predetermined condition set by the power receiving device.

33. The power supply system according to claim 29, wherein: The calculation unit estimates a route of the power supply network according to a predetermined condition set by the power supply device.

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