JP2017046578A - Non-contact power transmission device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device that simply transmits power and data in a non-contact manner not using a metal contact point in an environment on a sea surface, under the sea, or being soaked with water.SOLUTION: A device is composed of a pair of a power transmission side device S1 including a power transmission unit for supplying power without contact, and a power reception side device R1 including a power reception unit capable of receiving power without contact, and has structure in which the outer shape of the power transmission unit is a female fitting portion 30 and the outer shape of the other power reception unit is a mail fitting portion 31, and they fit into each other. Induction coils with a core 13 and 16 are provided for facing each other on the fitting portions 30 and 31. AC power is applied to the induction coil 13 at the power transmission side, and voltage at the induction coil 16 of the power reception unit at the other power reception side is converted into direct current by a rectifier circuit 17 and applied to a load 18. In addition, optical fibers 14 and 19 are provided for facing each other on both units, and optical communication devices 14a and 19a are attached to the respective optical fibers 14 and 19, making data communication possible.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an apparatus for transmitting electric power in a non-contact manner without using metal contacts. In particular, it is a technology useful for a non-contact power transmission technology between devices of power generation facilities of marine renewable energy.

  Since connection parts having metal contacts have problems such as rust and electric leakage, their use is limited in the sea surface, in seawater, or in places where there is concern about getting wet.

  In addition, technology related to non-contact power supply that has been attracting attention recently has given priority to improving the convenience of users, so even if the positional relationship between the power supply side device and the power reception side device is slightly shifted, It is also characterized by non-contact power supply reliably. As a result, there is a trend that priority is given to extending the distance between the power supply side device and the power reception side device over the improvement of the power efficiency of the non-contact power supply.

Japanese Patent Laying-Open No. 2015-023669 JP 2014-150697 A JP 2014-135797 A JP 2013-219972 A JP 2013-051855 A JP 2006-078560 A JP 2004-166459 A Special table 2010-523030 gazette JP 2003-209020 A JP-A-2005-101392

  Patent Document 1 relates to a non-contact power supply system, and is characterized in that the relative posture relationship between the power transmission side coil and the power reception side coil can be adjusted in order to maintain the state of non-contact power supply. This assumes that the joining of the power transmission side device and the power reception side device is unstable in the first place.

  Patent Document 2 relates to a non-contact power feeding system that transmits and receives electric power in a non-contact manner. An underwater mobile body to which a power transmission side device is attached and an underwater mobile body to which a power reception side device is attached run in parallel. The main feature is that the power transmission side device and the power reception side device are aligned when the power is transferred.

  Patent Document 3 relates to a non-contact power supply system, and is characterized in that power transmission is stopped when a positional relationship between a power transmission side device and a power reception side device exceeds a reference value.

  Patent Document 4 relates to a non-contact power feeding system, but between a power transmission side device and a power reception side device at a preset distance so that the power transmission side device and the power reception side device form an electromagnetic coupling circuit. The distance is controlled.

  Patent Document 5 relates to a contactless power supply system, and in particular, realizes a navigation system for establishing contact with each other while searching for each other's devices for contactless power transmission or power reception. It is.

  Patent Document 6 relates to a housing-type adapter that is attached to a camera, and includes data communication and power non-contact power supply. However, the data communication means employs a wireless communication method that is not related to the fitting portion between the housing and the camera. As for the non-contact power feeding of power, the power transmission phenomenon using the electromagnetic induction action between the combined coils is merely used.

  Patent Document 7 relates to a non-contact power supply system, but when the distance between the power transmission side device and the power reception side device approaches within a predetermined reference value, the power supply is continued and the proximity cannot be detected. Is characterized by stopping the continuation of power feeding.

  Patent Document 8 relates to a non-contact power supply system, but performs power supply and data transmission without contact with a rotating target device.

  As described above, the prior art realizes contactless power feeding in the sea or in an environment with water wet, so the distance between the device that sends power and the device that receives it, the positional relationship, the parallel state of both, The present invention relates to a method and apparatus for maintaining power in a required state by a complicated mechanism and procedure, or safely stopping power transmission when a required condition is not met.

  Or it is about the method of sending electric power without being conscious of the twist of a cable etc. with respect to the rotating object.

  Patent Document 9 relates to a contactless power supply coupler (coupler) that is supposed to be used on land.

  Patent Document 10 aims to prevent magnetic flux leaking between a power transmission side coil and a power reception side coil constituting non-contact power supply from interfering with other power cords and causing unnecessary electrical noise. The proposed configuration is proposed.

  As described above, there are several existing technical documents related to non-contact power feeding. Technical documents showing a method or apparatus for easily transmitting power and data in the sea surface, in the sea, or in an environment where the water is wet. There is no.

  The problem to be solved by the present invention is that there is no need for complicated mechanisms and procedures using non-contact power feeding technology and optical communication technology on the surface of the sea, in the sea, or in a wet environment, which is not found in the conventional known technology. The present invention provides a method and apparatus for simply transmitting power and data.

The configuration of the present invention that solves this problem is as follows.
1) There is a power transmission side device having a function of transmitting power in a contactless manner and a power receiving side device having a function of receiving power in a contactless manner. And the power receiving side device can be arranged at positions facing each other, and the mechanism or structure for fixing the relative positional relationship between the power transmission unit of the non-contact power transmission function and the power reception unit of the non-contact power reception function included in each device The non-contact type power transmission device 2 is characterized in that power transmission / reception exhibits a predetermined function or performance by fixing the relative position of the power transmission unit and the power reception unit. As a structure to fix the general positional relationship, the power sending part side is a female fitting part, the shape of the fitting part on the power receiving part side of the non-contact power receiving function is male, and the female fitting part on the power sending part side Accept electricity at joint The non-contact type power transmission device 3 according to the above 1), wherein the relative position relationship is fixed by fitting the male side fitting portion on the part side, and the function of non-contact power transmission of the power transmission side device And the function of receiving power in a non-contact manner of the power receiving side device is based on electromagnetic induction by the induction coil with core provided in the power transmission unit and the induction coil with core provided in the power reception unit. The non-contact according to the above 2), which has a structure in which a female fitting part and a male fitting part of the power receiving part are fitted to each other so as to be close to each other and their relative positions are fixed. 4) Type of power transmission device 4) The non-contact according to any one of 2) to 3), wherein a data communication means capable of non-contact data communication between adjacent distances is provided between the power transmission unit and the power receiving unit. Type power transmission device 5) The power receiving device receives power The monitor circuit for monitoring the power and voltage is provided, the monitor data of the power and voltage monitored by the monitor circuit is transmitted to the power transmission side device by the data communication means, and the power transmission side is based on the transmitted monitor data. In the non-contact type power transmission device 6) described in 4) above, the power transmission side device received by the data communication means, wherein the power control circuit in the device feedback-controls the amount of power transmitted by the induction coil. Transmitting an anomaly detection circuit that detects or predicts an abnormality in power transmission by inquiry comparison between the monitor data and the amount of transmitted power, and a protection circuit that eliminates the anomaly when the anomaly detection circuit detects or predicts an anomaly The non-contact power transmission device according to 5) provided in the side device 7) A fitting portion that fits the power sending portion and the power receiving portion close to each other The non-contact type power transmission device 8) according to any one of the above 2) to 6), in which the seawater or water that has entered is drained from the fitting portion, and the power of the power transmission unit of the power transmission side device and the power of the power reception side device Even if both the facing surface of the receiving part and the mating part or one of the face materials are made of elastic material, even if it is not possible to completely prevent the organism from attaching, the bulge by the organism is elastic. The non-contact power transmission device 9) according to any one of 2) to 7) above, wherein the fitting between the power transmission side device and the power reception side device can be achieved by biting into the material. Both of the facing surfaces of the power sending unit and the power receiving unit of the power receiving side device or one of the facing materials are made of a resilient material. In contact with the elasticity of the material. The non-contact power transmission device 10) according to any one of 2) to 8) above, wherein water remaining in the fitting portion gap is forcibly removed by increasing the contact area with the portion of 1) to 9) used in a power generation facility that generates power using marine renewable energy soaked in water and has a device divided into a power transmission side device that can supply the generated power and a power reception side device that receives the power supply. ) Any one of the contactless power transmission devices.

According to the present invention, power and data can be easily transmitted using a non-contact power feeding technology or an optical communication technology for this in the sea surface, under the sea, or in an environment where the water is wet, without requiring a complicated mechanism or procedure. Allows provision of methods and apparatus.
In recent non-contact power supply technologies, the distance between the power transmission unit and the power reception unit has increased, the parallel state between the power transmission unit and the power reception unit has shifted, or the facing position between the power transmission unit and the power reception unit has shifted. However, emphasis was placed on transmitting and receiving power safely and reliably, and the priority for increasing the power transmission efficiency was low. According to the present invention, the relative positional relationship between the members related to the spatial transmission of the power transmission function unit and the power reception function unit of non-contact power supply is within a predetermined state, thereby realizing sufficiently high power transmission efficiency. There is also an effect that makes possible.

FIG. 1 is an explanatory diagram showing the basic configuration of the present invention. FIG. 2 is an explanatory diagram according to the first embodiment of the present invention. FIG. 3 is a first explanatory view showing a mounted state of the included induction coil according to the second embodiment of the present invention. FIG. 4 is a second explanatory diagram showing a mounted state of the induction coil to be included according to the second embodiment of the present invention. FIG. 5 is an explanatory diagram according to Embodiment 3 of the present invention. FIG. 6 is an explanatory view showing a cross section of a recessed area of one fitting member according to Embodiment 4 of the present invention. FIG. 7 is an explanatory view showing a side surface of one fitting member according to Embodiment 4 of the present invention. FIG. 8 is a side view of the other fitting member according to the fourth embodiment of the present invention. FIG. 9 is an explanatory view showing a cross section of the other fitting member according to Embodiment 4 of the present invention.

  In the present invention in which the power transmission side device and the power reception side device are paired, it is preferable to have a protection circuit that prevents damage to the device by detecting a temperature rise value of a driving element such as a power device.

In the present invention, it is preferable to use a material for preventing corrosion or deterioration due to moisture when used in the sea, sea surface, water, water surface, or a place where there is a concern about water wetting.
In the present invention, when used in the sea, the sea surface, the water, the water surface, or a place where there is a concern about water wetting, it is preferable to perform a surface treatment for preventing the attachment of organisms.
Furthermore, in the present invention, when used in the sea, sea surface, underwater, water surface, or where there is a concern about water wetting, fine dirt adhering to the surface or light diffused by the surface becoming a rough surface due to friction. It is preferable to secure optical communication assuming it.

Furthermore, in the present invention, the structure (fitting part) for connecting (fixing) the power transmission side device and the power reception side device to each other is used in the sea, sea surface, underwater, water surface, or where there is a concern about water wetting. In addition, it is preferable not to expect seawater or water to escape from the play of fitting, but to provide a path (a groove serving as a drainage channel) through which seawater and water escape.
The present invention is beneficial in the field of marine regenerative energy for the purpose of efficiently and safely transmitting or receiving the generated electricity in a non-contact manner between devices separated by seawater.

  As a method of fixing the relative positional relationship between the power transmission unit of the power transmission side device and the power reception unit of the power reception side device, in particular, a mechanical connection work, a method of electromagnetic connection (fixation), or a combination thereof The method of connecting (fixing) can be adopted.

  Embodiments of the present invention will be described with reference to the drawings.

First, the basic configuration of the present invention will be described with reference to FIG.
In FIG. 1, a concave area A1 (mainly left side) surrounded by a concave shape indicates the power transmission side device S1, and a convex area A2 (mainly right side) also surrounded by a convex shape indicates the power receiving side device R1. .
The power transmission side device S1 includes a rectifier circuit 11, a power control circuit 12, an induction coil 13, an optical fiber 14, an optical communication device 14a, and the like. The electric symbol described at the left end represents a power source of AC power 10.
Similarly, the power receiving side device R1 includes an induction coil 16, a rectifier circuit 17, an optical fiber 19, an optical communication device 19a, and the like. The electrical symbol written at the right end represents the load 18.
These configurations are block diagrams that are often used in electrical document descriptions, and various specific configurations are available. Therefore, it is not limited to this description.
Further, since the drawing is described in an easy-to-understand manner, the fitting portion between the concave and convex portions is not in close contact, but in an actual use, an appropriate fitting process is performed.

In this figure, power transmission will be described as follows. FIG. 1 is a diagram showing a basic configuration of the present invention.
In FIG. 1, in the power transmission side device S1, the received AC power 10 is rectified by the rectifier circuit 11 and temporarily converted into a DC. After that, the power control circuit 12 converts it into desired high frequency power. This high frequency power is supplied to the induction coil 13.
When the concave region A1 and the convex region A2 of the power transmission side device S1 and the power reception side device R1 are appropriately fitted, the induction coil 13 of the power transmission side device S1 and the induction coil included in the power reception side device R1 The positional relationship with 16 is appropriate. For this reason, the high frequency power supplied to the induction coil 13 included in the power transmission side device S1 has a mutual induction action on the induction coil 16 included in the power reception side device R1.
In the power receiving device R1, an induced electromotive force is generated in the induction coil 16 due to the mutual induction action. Then, a predetermined current influenced by the load (Rz) 18 flows. The rectifier circuit 17 of the power receiving side device R1 may be unnecessary depending on the type and configuration of the load 18, but here the power is supplied to the load 18 after being converted to direct current.

Similarly, in FIG. 1, data transmission will be described as follows.
For example, assume a data communication means for bidirectional optical communication using a single optical transmission line such as the optical fibers 14 and 19.
When the power transmission side device S1 and the power reception side device R1 are appropriately fitted, the end face of the optical transmission line using the optical fibers 14 and 19 included in the power transmission side device S1 and the power reception side device R1 are included. The end face of the optical transmission line to be formed is in an appropriate facing state. For this reason, although there is a slight attenuation of the light amount, the data communication means of the optical fibers 14 and 19 and the optical communication devices 14a and 19a using light can be provided without any problem.
For example, when two-way communication is assumed by combining two different directions of unidirectional optical communication using separate optical transmission paths for uplink and downlink, the power transmission side device S1 and the power reception side device R1 are appropriately configured. When the fitting process is performed, if the upstream optical transmission paths and the downstream optical transmission paths are in an appropriate facing state, data communication means using the target light can be provided without any problem. It will be.

  Hereinafter, various variations will be described as examples.

Example 1
A first embodiment shown in FIG. 2 shows one of the embodiments relating to the entire apparatus included in the present invention.
In FIG. 2, the concave region A1 (mainly on the left side) shows the power transmission side device S1, and the convex region A2 (mainly on the right side) shows the power reception side device R1. Further, the left end of the figure shows the original AC power 10 and the right end of the figure shows the final load 18. These configurations are shown in block diagrams often used in electrical document descriptions, and actual circuit configurations vary. This is just one example.
The state shown in this figure is the situation before complete mating. In the state where the concave area A1 and the convex area A2 are fitted, both are in close contact with each other. It is also beneficial to add a means to lock (lock) it after an appropriate mating process. In addition, although each apparatus is shown by the concave type and the convex type, it is not necessary to be caught by this shape. Any shape may be used as long as the pair can be fitted.
The power transmission side device S1 includes a rectifier circuit 11, a power control circuit 12, an induction coil 13, an optical fiber 14, an optical communication device 14a, and the like. Similarly, the power receiving side device R1 includes an induction coil 16, a rectifier circuit 17, an optical fiber 19, an optical communication device 19a, and the like.
In this figure, power transmission is performed as follows. First, in the power transmission side device S1, the received (to be sent) power is rectified into a direct current. After that, the power control circuit 12 converts it into desired high frequency power. Then, this high frequency power is supplied to the induction coil 13. If the power transmission side device S1 and the power reception side device R1 are appropriately fitted, the positional relationship between the induction coils 13 and 16 included in the power transmission side device S1 and the power reception side device R1 is appropriate. It has become. For this reason, the high frequency power supplied to the induction coil 13 included in the power transmission side device S1 has a mutual induction action on the induction coil 16 included in the power reception side device R1. In the power receiving side device R <b> 1, an induced electromotive force is generated in the induction coil 16 due to the mutual induction action, and a predetermined current influenced by the load (Rz) 18 flows. The rectifier circuit 17 of the power receiving side device R1 may be unnecessary depending on the type and configuration of the load 18, but here, a diagram in the case where the power is supplied to the load 18 after the direct current is shown is shown.
Similarly, in this figure, data transmission is performed as follows. For example, in the case of bidirectional optical communication using a single optical fiber 14, when the power transmission side device S1 and the power reception side device R1 are appropriately fitted, the power transmission side device S1 and the power reception side device R1 The end faces of the respective optical fibers 14 and 19 to be included are in an appropriate facing state. For this reason, similarly to the connection of a normal optical fiber connector, data communication means using light can be provided without any problem. When used in the sea or the like, it is assumed that the end face of the optical fiber is worn or soiled. For this reason, devices such as using an optical fiber having an appropriate numerical aperture and coupling using a wide-angle lens are also effective.
In addition, the device can be used in various situations such as sea, sea, sea, water, water, underwater, outdoors or indoors where water is expected, indoors, leakage prevention and explosion-proof purposes. is there.
In addition, the surface and internal materials can be used with this device, such as those with excellent corrosion resistance, those with excellent anti-biological adhesion resistance, and those with excellent swelling resistance against moisture and solvents. Selection according to the scene is possible.

(Example 2)
The second embodiment shown in FIGS. 3 and 4 shows a mounting state of the induction coils 13 and 16 included in the power transmission side device S1 and the power reception side device R1.
These drawings show a case where the induction coils 13 and 16 described in the first embodiment are coils wound around the cores 13a and 16a.
In the case of non-contact power supply using an electromagnetic induction method, it is desirable to reduce the leakage magnetic flux as much as possible between the induction coil 13 on the power transmission side and the induction coil 16 on the power reception side.
Therefore, FIG. 3 shows the end faces of the cores 13a and 16a around which the induction coils 13 and 16 are wound as close as possible to the fitting surface. As described above, the waterproof cases 15 and 19b and the surface coating for waterproofing are made as thin as possible, and the distance between the cores 13a and 16a is made as small as possible. Other configurations are the same as those of the first embodiment, and have common reference numerals.
FIG. 4 shows a case where the fitting surface and the core surface are made to coincide so that the cores 13a and 16a of the power transmission side device S1 and the power reception side device R1 are completely fitted. Show. The cores 13a and 16a of the induction coils 13 and 16 used for the high-frequency power are made of ferrite or the like and do not require anticorrosion treatment. Focusing on this, the core surface (core cross section) is intentionally matched (exposed) with the fitting surface. In theory, this makes it possible to reduce the distance between the cores to zero and to minimize the leakage magnetic flux.

(Example 3)
As Example 3 shown in FIG. 5, the example in the case of performing the whole control using the communication function of the optical fibers 14 and 19 and the optical communication devices 14a and 19a between the power transmission side and the power receiving side is shown. Yes. In addition, as a communication function, a special communication means may be provided specially, and it may share with the communication means provided for an external device. This figure shows the case of carpooling. Other configurations and operational effects are the same as those of the first embodiment.
The monitoring function circuits 20 and 21 mounted on the power transmission side and the power reception side collect necessary information such as temperature, power, voltage, current, frequency, and power factor at various points in order to know the operating status of each device. It is a monitor circuit. The communication superimposing function circuits 23 and 24 convert the collected information into data, and transmit it together with the communication means provided for the external device. The communication discrimination function circuit 25 extracts the previously superimposed information and transmits it to the control function circuit 22. The control function circuit 22 analyzes various information collected or collected and transmitted, and realizes feedback to power control and emergency stop in the event of an abnormality.
The control function circuit 22 includes power reception / voltage data on the power receiving side from the monitoring function circuit 21 (monitor circuit) of the power receiving side device R1, and the power transmission side of the monitoring function circuit 20 (monitor circuit) of the power transmission side device S1. A power control feedback circuit 22a that feedback-controls the power / voltage of power transmission by comparing with power / voltage data, and an abnormality detection circuit 22b that detects power transmission / power reception abnormality from monitor data on the power receiving side and power transmission side. And an electrical protection circuit 22c that eliminates the abnormality by the abnormality detection signal of the abnormality detection circuit 22b. Other structures, functions and effects are the same as in the first and second embodiments.

Example 4
Example 4 shown in FIGS. 6-9 shows the structure of a fitting part. 6 and 7 show the fitting member 30 in the concave region A1, and FIGS. 8 and 9 show the fitting member 31 in the convex region A2 corresponding thereto.
In normal fitting, the position and orientation need only be defined. For this reason, it is usual to add one protrusion and a recess corresponding to the connector to be fitted. As shown in FIGS. 8 and 9, the fitting member 31 in the convex region A2 has one depression. This is added in consideration of the fitting process in the sea.
In places where there is a lot of moisture, such as in the sea, seawater and water are contained in the recessed regions A1 of the fitting members 30, 31. In the members 30 and 31 that are fitted without a gap, the seawater or water hinders the fitting process. It is the groove | channel 32 for draining this seawater and water efficiently. Such a groove | channel 32 may be what kind of shape, and may be provided to the fitting member 30 of concave area | region A1, or may be provided to the fitting member 31 of convex area | region A2. Also, any number is acceptable. Other structures, functions and effects are the same as in the first, second and third embodiments.

(Example 5)
In the fourth embodiment, after the fitting portions 30 and 31 are fitted, as a fixing method, there are a method of mechanically holding and fixing, and a method of attracting and fixing using a magnetic force generated by a magnet or the like.
In addition, since a method such as fixing with an adhesive material is also assumed, the method is not limited to a mechanical or electromagnetic fixing method.

(Example 6)
In the first to fifth embodiments, the surfaces of the fitting portions 30 and 31, that is, for example, both or one of the opposing surfaces of the power transmission side device S1 and the power reception side device R1 are made of an elastic material. Even if it is not possible to completely prevent the attachment of organisms, the protruding side caused by the organisms can be bitten into an elastic material, so that even if there is not enough play (gap) on the power transmission side Fitting between the device and the power receiving device can be achieved.

(Example 7)
In the first to sixth embodiments, the surface of the fitting portions 30, 31, that is, for example, both or one of the opposing surfaces of the power transmission side device S1 and the power reception side device R1 is made of an elastic material, and the fitting operation is performed. At this time, a part of the opposite surfaces is first brought into contact with the other, and the area in which other parts are brought into contact with each other is increased by the elasticity of the material. This makes it possible to forcibly exclude the moisture remaining in the fitting portion gap.

  The present invention provides a method for transmitting electric power and data, which is used in situations where it is not desired to use a metal contact, such as in leakage prevention or explosion prevention, in the sea surface, in the sea, or in a wet environment, and the apparatus. Contributes to industry as a manufacturing method.

A1 concave region A2 convex region S1 power transmission side device R1 power reception side device 10 AC power 11 rectification circuit 12 power control circuit 13 induction coil 13a core 14 optical fiber 14a optical communication device 15 waterproof case 16 induction coil 16a core 17 rectification circuit 18 load DESCRIPTION OF SYMBOLS 19 Optical fiber 19a Optical communication device 19b Waterproof case 20, 21 Monitoring function circuit 22 Control function circuit 22a Power control feedback circuit 22b Abnormality detection circuit 22c Protection circuit 23, 24 Communication superposition function circuit 25 Communication discrimination function circuit 30 Female type fitting Member (Fitting part)
31 Male fitting member (fitting part)
32 grooves

Claims (10)

  There are a power transmission side device having a function of transmitting power in a contactless manner and a power receiving side device having a function of receiving power in a contactless manner. The side devices can be placed at positions facing each other, and there is a mechanism or structure that fixes the relative positional relationship between the power transmission unit of the non-contact power transmission function and the power reception unit of the non-contact power reception function included in each device. A non-contact power transmission device characterized in that power transmission and reception exhibits a predetermined function or performance by fixing its relative position.   As a structure for fixing the relative positional relationship between the power sending part and the power receiving part, the power sending part side is a female fitting part, and the shape of the fitting part on the power receiving part side of the non-contact power receiving function is male. The non-contact type according to claim 1, wherein the relative positional relationship is fixed by fitting a male fitting portion on the power receiving portion side to a female fitting portion on the power sending portion side. Power transmission device.   Electromagnetic induction by the non-contact power transmission function of the power transmission side device and the non-contact power reception function of the power reception side device by the cored induction coil provided in the power transmission unit and the cored induction coil provided in the power reception unit In the structure of fixing the relative position of the power sending part having the core and the female fitting part and the male fitting part of the power receiving part, which are close to each other by fitting. The non-contact power transmission device according to claim 2, wherein   The contactless power transmission device according to any one of claims 2 to 3, wherein a data communication means capable of data communication between adjacent distances in a contactless manner is provided between the power transmission unit and the power receiving unit.   The power receiving side device is provided with a monitor circuit for monitoring the received power and voltage, and the monitor of the power and voltage monitored by the monitoring circuit is transmitted to the power transmitting side device by the data communication means. The non-contact power transmission device according to claim 4, wherein the power control circuit in the power transmission side device performs feedback control of the power transmission side power amount by the induction coil based on the data.   6. The abnormality detection circuit according to claim 5, wherein the power transmission side device detects or predicts a power transmission abnormality by comparing the monitor data received by the data communication means with the transmitted power amount, and the abnormality detection circuit detects the abnormality. Or the non-contact-type electric power transmission apparatus of Claim 5 which provided the protection circuit which eliminates the abnormality when it estimates, in the power transmission side apparatus.   The non-contact in any one of Claims 2-6 which formed the groove | channel of the drainage channel which escapes the seawater or water which approached the fitting part which fits the said electric power transmission part and the electric power reception part closely. Power transmission device.   It is not possible to completely prevent the attachment of organisms by making both or one of the opposing faces of the fitting part of the power sending part of the power transmitting side device and the power receiving part of the power receiving side device elastic. 8, wherein the fitting by the power transmission side device and the power reception side device can be achieved by causing the bulge of the living organism to bite into the elastic material. Non-contact power transmission device.   Both or one of the facing surfaces of the power transmitting unit of the power transmission side device and the power receiving unit of the power receiving side device are made of elastic material, and the same surface is also used during the fitting operation. The portion that comes into contact first, and the area where the other portions sequentially come into contact with each other due to the elasticity of the material increases, so that moisture remaining in the fitting portion gap is forcibly removed. 8. The non-contact power transmission device according to any one of 8.   A power generation facility that generates power using marine renewable energy immersed in seawater, which is used for a power transmission side device that can supply the generated power and a device that is divided into a power reception side device that receives power supply. 9. The non-contact power transmission device according to any one of 9.

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