JP2017169364A - Power supply unit and non-contact power transmission system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply unit and a non-contact power transmission system, capable of continuing power supply to a predetermined load if a vessel is extracted from a storage.SOLUTION: A power supply unit 1 is mounted on a vessel 10 including a plate body 30, whose inside can be seen through, and a lid 20 which covers the upper part of the plate body 30 and whose inside can be seen through. The power supply unit 1 includes: a power reception coil 41 mounted on the lid 20 or the plate body 30; and a secondary battery 45 mounted on the lid 20 or the plate body 30. Power is fed to the power reception coil 41 by making conductive a power supply coil 90 provided in a non-contact manner to the power reception coil 41 outside the vessel 10, so as to charge the secondary battery 45 from the power reception coil 41.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power supply unit capable of non-contact power transmission and a non-contact power transmission system including the same.

  The storage described in Patent Document 1 is provided in a storage room and has a wireless sensor having a detection function such as temperature, an antenna that communicates with the wireless sensor, and information that is sensed by the wireless sensor and received via the antenna. And an information reading device for reading the information and a control means for acquiring the information read by the information reading device and controlling the storage room. With this configuration, it is possible to place the sensor at any location without considering the wiring, and therefore it is possible to acquire information on any location within the storage chamber.

  The non-contact power transmission system described in Patent Document 2 includes a power transmission device having a power transmission coil, and a power reception device having a power reception coil and a magnetic flux collecting coil, and the power reception coil using a magnetic flux generated by passing a current through the power transmission coil as a medium. Transmit power to

  The culture apparatus described in Patent Document 3 is arranged in a thermostatic container having a stacker that accommodates a plurality of culture containers for culturing cells and an atmosphere in the thermostatic container, and is installed at an observation position in the thermostatic container. An observation lens having an objective lens for observing cells in the culture vessel, an objective lens driving unit, and a camera unit. With this configuration, it is possible to reduce the thermal influence of the observation unit on the thermostatic container.

JP 2006-214644 A JP 2012-50209 A International Publication No. 2007/004385

  In the storage described in Patent Document 1, neither the refrigerator main body nor the first refrigeration chamber can be observed without opening the door because of the structure and material thereof. There was a problem that the temperature and humidity changed. For this reason, it has been difficult to use in applications such as culture where it is necessary to observe the inside without opening the container.

  In the power receiving device of the non-contact power transmission system described in Patent Document 2, the installation location of the power receiving coil and the magnetic flux collecting coil is not limited, and no space for accommodating the substance is provided therein. Further, the power receiving device is not made of a material that transmits light. For this reason, even if a space for containing a substance is formed in the power receiving device, it is difficult to observe the inside unless the power receiving device is opened and brought into contact with the outside air.

  Although the culture apparatus described in Patent Document 3 can observe the inside of the culture container while reducing the thermal influence on the culture container, there is a problem that the configuration of the apparatus becomes complicated. In addition, a dedicated culture device is required, and an existing storage or microscope cannot be used.

  An object of the present invention is to provide a power supply unit and a non-contact power transmission system applied to a container that can observe the inside without taking a lid. Further, it is possible to provide a power supply unit and a non-contact power transmission system that can wirelessly supply power for each container and can continue power supply to a predetermined load even when the container is taken out from the storage. It is aimed.

  In order to solve the above-mentioned problems, the present invention is a power supply unit that is attached to a container including a dish body that can be seen through the inside and a lid part that can see through the inside of the dish body, and the lid part or the dish. A power receiving coil that is attached to the main body and a secondary battery that is attached to the lid or the dish main body, and that feeds power to the power receiving coil by energizing a power feeding coil provided in contact with the power receiving coil outside the container. A power supply unit that charges a secondary battery from a coil.

  According to such a configuration, by attaching the power supply unit of the present invention to an existing see-through container, the inside can be observed without taking the lid, and the environment in the container changes every time the observation is made. It is possible to accurately and reliably detect and manage the environment such as temperature and humidity without causing it to occur. Furthermore, since the secondary battery is charged from the power receiving coil, power can be supplied from the secondary battery even when power is not supplied from the power receiving coil.

  In the power supply unit of the present invention, the power supply unit further includes a control unit that is attached to the lid part or the plate body and that operates by power supplied from at least one of the power reception coil and the secondary battery. When it becomes lower than the set value, it is preferable to perform control to switch the power supply source from the power receiving coil to the secondary battery. Thereby, even when the receiving voltage of a receiving coil falls, it can switch to a secondary battery and can supply electric power.

  In the power supply unit of the present invention, the power receiving coil is preferably a conductive ink printing pattern, a flexible printed board, or a conductive pattern formed by thin film formation or surface treatment. Thereby, the receiving coil of a desired shape can be formed at a desired position at a low cost.

  The power supply unit of the present invention further includes an antenna attached to the lid or the dish body, and the antenna transmits a signal to the outside of the container by the power supplied from at least one of the power receiving coil and the secondary battery. Is preferred. Thereby, environmental data, such as temperature and humidity detected for every container, can be sent outside.

  The power supply unit of the present invention further includes a wireless communication unit attached to the lid or the dish body, and the wireless communication unit performs wireless communication with an external device by using power supplied from at least one of the power receiving coil and the secondary battery. It is preferable. Thereby, the progress and result of environmental management for each container can be sent to an external computer, a tablet terminal, or the like.

  The power supply unit of the present invention preferably further includes an environmental sensor attached to the lid or the dish body, and the environmental sensor is preferably operated by electric power supplied from at least one of the power receiving coil and the secondary battery. The environmental sensor is preferably a temperature / humidity sensor. This makes it possible to manage the environment for each container. In the power supply unit of the present invention, the container is preferably a petri dish for culturing.

  In the power supply unit of the present invention, it is preferable that the power supply unit further includes a solar battery attached to the lid or the dish body, and at least one of the power receiving coil, the secondary battery, and the solar battery is used as a power supply source. Thereby, when the receiving voltage of a receiving coil falls, a continuous operation can be aimed at by the electric power supply from a solar cell or a secondary battery. In the power supply unit of the present invention, the solar cell is preferably charged to the secondary battery.

  A non-contact power transmission system according to the present invention includes a container to which any of the above-described power supply units is attached, and a power supply apparatus that includes a placement surface on which the container is placed and is provided with a power supply coil. To do. Thereby, electric power can be supplied for each container.

  In the non-contact power transmission system of the present invention, the power supply coil is a conductive ink print pattern, a flexible printed circuit board, or a conductive pattern formed by thin film formation or surface treatment formed on the mounting surface. Is preferred. Thereby, the feed coil of a desired shape can be formed at a low cost at a desired position.

  In the non-contact power transmission system of the present invention, it is preferable that the surface including the feeding coil and the surface including the power receiving coil are parallel. Thereby, it is possible to efficiently supply power from the power feeding coil to the power receiving coil.

  In the non-contact power transmission system of the present invention, it is preferable that a plurality of containers are stacked in a direction perpendicular to the placement surface. Since there are few restrictions of arrangement | positioning of a container by the above-mentioned structure, it can stack and arrange | position, without extending arrangement | positioning space.

  In the non-contact power transmission system of the present invention, power is supplied from a power receiving coil to a predetermined load while the power receiving coil is receiving power, and when the power feeding coil stops receiving power, the power is changed from the power receiving coil to the secondary battery. It is preferable to supply electric power. As a result, even when the power receiving voltage is reduced or no power is received while power is received by the power receiving coil, it is possible to continue supplying power to the load without interruption.

  In the non-contact power transmission system of the present invention, when the power supply source is switched from the power receiving coil to the secondary battery, information indicating that the container is separated from the mounting surface is recorded, and the power supply source is the secondary power source. It is preferable to further include a recording unit that records information indicating that the container is placed on the placement surface when the battery is switched to the power receiving coil. Thereby, it is possible to obtain information on whether or not the container has been taken out of the storage position by switching the power supply source and whether or not the container has been returned to the storage position.

  ADVANTAGE OF THE INVENTION According to this invention, the electric power supply unit and non-contact electric power transmission system which are applied to the container which can observe the inside, without taking a cover part can be provided. Further, it is possible to provide a power supply unit and a non-contact power transmission system that can perform wireless power feeding for each container and can continue power supply to a predetermined load even when the container is taken out from the storage. .

(A) is a side view which shows the state which isolate | separated the tray main body and the cover part in the container with which the electric power feeding unit which concerns on embodiment of this invention was attached, (B) is a lid | cover on a dish main body in the container which concerns on embodiment of this invention. It is a side view which shows the state which mounted the part. It is a top view which shows the structure of the electric power feeding unit which concerns on embodiment of this invention. It is a block diagram which shows the structure of the non-contact electric power transmission system which concerns on embodiment of this invention. It is a perspective view which shows the structure of the coil in embodiment of this invention. It is a circuit diagram which shows the relationship of the coil in embodiment of this invention. It is a side view which shows the state which accumulated the container with which the electric power feeding unit which concerns on embodiment of this invention was attached. It is a side view which shows the state which set | placed the container with which the electric power feeding unit which concerns on embodiment of this invention was attached on the electric power feeder. It is a perspective view which shows the state which has arrange | positioned the non-contact electric power transmission system which concerns on embodiment of this invention in the storage.

  Hereinafter, a power supply unit and a non-contact power transmission system according to an embodiment of the present invention will be described in detail with reference to the drawings.

  1A and 1B are side views showing a configuration of a container 10 to which a power supply unit 1 according to the present embodiment is attached, in which FIG. 1A shows a state in which a plate body 30 and a lid 20 are separated, and FIG. The state which put the cover part 20 on the main body 30 is shown, respectively. FIG. 2 is a plan view showing the configuration of the power supply unit 1. FIG. 3 is a block diagram showing the configuration of the non-contact power transmission system according to the present embodiment. FIG. 4 is a perspective view showing the configuration of the coil in the present embodiment. FIG. 5 is a circuit diagram showing the relationship of the coils in the present embodiment.

  As shown in FIG. 1, the container 10 includes a cylindrical dish body 30 having a bottom surface and a transparent through-hole, and a cylindrical lid body having a ceiling surface that covers and covers the top of the dish body 30. Part 20. The container 10 is, for example, a petri dish for culturing inside, and the dish body 30 and the lid part 20 are preferably formed of glass or a synthetic resin material that allows the inside to be seen through. In this specification, “the inside can be seen through” means a state in which the inside of the container 10 can be visually observed from the outside, such as transparent or translucent.

  The power supply unit 1 according to the present embodiment is attached to the container 10 described above and can be supplied with electric power from the outside without contact. The power supply unit 1 includes a power receiving coil 41 and a secondary battery 45. The power receiving coil 41 is included in the coil part 40 and is attached to the lid part 20 or the dish body 30. The secondary battery 45 is attached to the lid 20 or the dish body 30 and is charged using the received power by the power receiving coil 41.

  A coil portion 40 is provided on the upper surface 21 of the lid portion 20. As shown in FIG. 4, the coil unit 40 includes a power receiving coil 41 and a load matching coil 42 that are stacked along the height direction Z of the container 10. The coil portion 40 is disposed around the central portion 22 of the upper surface 21 of the lid portion 20. The coil part 40 is formed by adhering a spirally wound conducting wire to the lid part 20, and also formed as a conductive ink printing pattern, a flexible printed circuit board, or a conductive pattern formed by thin film formation or surface treatment. You can also The power receiving coil 41 is supplied with power by energizing a power supply coil 90 (FIG. 7) provided in a non-contact manner with the power receiving coil 41 outside the container 10.

  As shown in FIG. 1, a control module 50, an antenna 60, and a secondary battery 45 that are electrically connected to each other by a conductive wire 70 are fixed to the side surface 23 of the lid portion 20 by adhesion. The control module 50 is electrically connected to the coil unit 40. The control module 50, the antenna 60, the secondary battery 45, and the conductive wire 70 are covered with a non-conductive and non-transparent tape 80.

  As shown in FIG. 3, the control module 50 includes a control circuit 51 that controls each unit as a control unit, and a temperature and humidity sensor 52 that is an example of an environmental sensor. In the present embodiment, the control circuit 51 includes a voltage detection unit 511 and a switching unit 512. The voltage detection unit 511 detects the power reception voltage of the power reception coil 41. The switching unit 512 switches the power supply source based on the voltage value detected by the voltage detection unit 511.

  In the present embodiment, when the voltage value detected by the voltage detection unit 511 is equal to or greater than a preset value (power reception reference value), the switching unit 512 selects the power reception coil 41 as a power supply source. Thus, a predetermined load (for example, the temperature / humidity sensor 52 and the antenna 60) is operated by the power supplied from the power receiving coil 41. Further, the secondary battery 45 is charged by the power supplied from the power receiving coil 41.

  On the other hand, when the voltage value detected by the voltage detection unit 511 is lower than the power reception reference value, the switching unit 512 selects the secondary battery 45 as the power supply source. Accordingly, a predetermined load (for example, the temperature / humidity sensor 52 and the antenna 60) is operated by the power supplied from the secondary battery 45. When the voltage value detected by the voltage detection unit 511 is lower than the power reception reference value, the switching unit 512 may select both the power reception coil 41 and the secondary battery 45 as power supply sources. Thereby, each of the power receiving coil 41 and the secondary battery 45 is configured to supplement each other's electric power.

  The power supply unit 1 may include a solar cell 46. The solar cell 46 is disposed at a position where light can easily hit, such as the upper surface 21 and the side surface 23 of the lid 20. When the solar battery 46 is provided, the power supply unit 1 uses at least one of the power receiving coil 41, the secondary battery 45, and the solar battery 46 as a power supply source. That is, when the power reception voltage of the power reception coil 41 detected by the voltage detection unit 511 is equal to or higher than the power reception reference value, the switching unit 512 selects the power reception coil 41 as a power supply source.

  On the other hand, when the power reception voltage of the power reception coil 41 detected by the voltage detection unit 511 is lower than the power reception reference value, the switching unit 512 is at least one of the secondary battery 45 and the solar battery 46, or the power reception coil 41, the secondary battery. 45 and all of the solar cells 46 are selected as power supply sources.

  Further, the voltage detection unit 511 may detect the voltage value of the solar battery 46. The switching unit 512 may select the flow of power based on the voltage value of the solar battery 46 detected by the voltage detection unit 511 and the received voltage value of the power receiving coil 41. For example, when the voltage value of the solar cell 46 detected by the voltage detection unit 511 is equal to or higher than a preset value (power generation reference value) and the power reception voltage of the power receiving coil 41 is equal to or higher than the power reception reference value, the switching unit 512 selects the power receiving coil 41 as a power supply source of the load such as the temperature / humidity sensor 52 and selects the power generated by the solar battery 46 to be assigned to the charging of the secondary battery 45.

  Further, the voltage detection unit 511 may further detect the voltage of the secondary battery 45. In this case, the switching unit 512 balances the supply source that supplies power to the load based on the received voltage of the power receiving coil 41 detected by the voltage detecting unit 511, the voltage of the secondary battery 45, and the voltage value of the solar battery 46, respectively. Or the power allocated to the charging of the secondary battery 45 can be adjusted.

  The contactless power transmission system according to the present embodiment includes a container 10 to which the power supply unit 1 is attached and a power supply apparatus 100 that supplies power to the container 10 in a contactless manner.

  As described above, the control module 50 mounted on the container 10 includes the control circuit 51 and the temperature / humidity sensor 52 as an environmental sensor. The control circuit 51, the temperature / humidity sensor 52, and the antenna 60 are at least one of the power supplied to the power receiving coil 41 and the power of the secondary battery 45, the power supplied to the power receiving coil 41, and the power of the secondary battery 45. And at least one of the electric power of the solar battery 46.

  The temperature / humidity sensor 52 detects the temperature and humidity of the container 10 and outputs them to the control circuit 51. The control circuit 51 records the detection result by the temperature / humidity sensor 52 and the ID information set for each container 10 from the antenna 60 to the ID reader 92 through the antenna 93 of the power feeding apparatus 100. For example, the antenna 60 modulates and transmits a high-frequency carrier signal with a signal corresponding to the detection result of the temperature / humidity sensor 52 and the ID information. The time interval for recording a signal from the antenna 60 to the ID reader 92 and the ID information are stored in advance in the storage unit of the control circuit 51.

  Moreover, it is preferable to provide the control module 50 with an indicator indicating that the power from the power supply apparatus 100 is being received. Providing this indicator is preferable because it is possible to replace the container 10 that cannot receive power due to a failure of the control module 50 or the like. A light emitting diode etc. are used for an indicator.

  In the power supply apparatus 100, information received by the ID reader 92 is stored in the storage unit of the control unit 91. When there is a request for retrieving information stored in the storage unit from an external device to the control unit 91, it can be transmitted to the external device (computer or tablet terminal) by the antenna 93 (wireless device).

  Further, when the power receiving voltage at the power receiving coil 41 becomes lower than the power receiving reference value, such as when the container 10 is separated from the power feeding device 100 or cannot be fed from the power feeding device 100 due to some influence, the secondary battery is switched by the switching unit 512. 45 and the power of the solar battery 46 are switched to be supplied to the temperature / humidity sensor 52 and the antenna 60. As a result, even when the power receiving voltage is reduced or no power is received while the power receiving coil 41 is receiving power, the temperature / humidity sensor 52 detects information without interruption and transmits information from the antenna 60. Can continue.

  In particular, wireless communication requires a predetermined time for pairing. In the present embodiment, even when the container 10 is separated from the power supply apparatus 100, power is supplied from the secondary battery 45 or the solar battery 46, so that wireless communication pairing is maintained and the link is not broken. Therefore, even when power is not supplied from the power supply apparatus 100, environmental information such as the temperature and humidity of the container 10 is not lost, and changes in the environmental information during the movement of the container 10 can be monitored.

  The relationship between the power feeding coil 90, the load matching coil 42 on the container 10 side, and the power receiving coil 41 is as shown in FIG.

In the control unit 91 provided in the power supply apparatus 100, the power supplied from the external power supply 110 is supplied (energized) to the power supply coil 90 as an AC voltage V _in having a predetermined waveform (FIG. 5). In the power feeding device 100, an oscillation circuit is configured by the power feeding coil (L ₁ ) 90, the capacitor C ₁ and the winding resistance r ₁ , and an alternating current having a predetermined frequency (1 MHz or less) is applied to the power feeding coil (L) 90. It is done. Capacitor C ₁ and winding resistance r ₁ are arranged in power supply apparatus 100.

On the container 10 side, a resonance circuit is configured by the load matching coil (L ₂ ) 42, the resonance capacitor C _2, and the winding resistance r ₂ , and the power receiving coil (L ₃ ) 41 includes the winding resistance r ₂ and the control module. Connected to a load _RL such as 50. On the container 10 side, the resonant capacitor C ₂ , the winding resistance r ₂ , the load R _L , and the winding resistance r ₃ are arranged in the control module 50.

In this configuration, the current magnetic field M ₁₂ is induced by an AC signal applied to the power feeding coil 90. The current magnetic field _{M 12,} the resonance is generated given the load matching coil _(L 2) 42, the induced magnetic field _{M 23} by the resonance is supplied to the power receiving coil 41, power is supplied to the load _{R L.}

  Since the power supply coil 90 and the load matching coil 42 are matched in impedance and supplied to the power receiving coil 41, power corresponding to the power supplied to the power supply coil 90 can be efficiently transmitted to the power receiving coil 41. That is, by using the load matching coil 42, it is possible to optimize the load characteristics. In particular, when power is supplied to the plurality of power receiving coils 41 with one power supply coil 90, mutual interference does not occur. The overall Q value of the plurality of power receiving coils 41 can be increased while suppressing the Q value to an extent.

  FIG. 6 is a side view illustrating a state in which the container 10 to which the power supply unit 1 according to the present embodiment is attached is stacked on the power supply apparatus 100. FIG. 7 is a side view showing a state where the container 10 to which the power supply unit 1 according to the present embodiment is attached is placed on the power supply apparatus 100.

  As shown in FIG. 6, the container 10 can be stacked by placing a plate body 30 of another container 10 on the lid part 20 on which the coil part 40 is formed. Here, if the fitting part which mutually fits is provided in the upper part of the cover part 20 and the lower part of the plate main body 30, the position of the piled container 10 in the plane direction (direction orthogonal to a height direction) will be decided, and all in a plane direction Since the center positions of the containers 10 coincide with each other, it is possible to more reliably supply power and to reduce the possibility of dropping due to misalignment. The containers 10 stacked in this way are arranged on the mounting surface 101 of the power supply apparatus 100 shown in FIG. Accordingly, the container 10 is stacked in the direction D1 perpendicular to the placement surface 101.

  Four regions 102, 103, 104, and 105 (FIGS. 6 and 7) in which the container 10 is disposed are provided on the mounting surface 101 having a substantially rectangular shape in plan view, and power is supplied to the peripheral portion so as to surround these regions. A coil 90 is formed. The feeding coil 90 is formed by adhering a conductive wire wound in a substantially rectangular shape to the mounting surface 101, and also as a conductive pattern formed by conductive ink printing pattern, flexible printed circuit board, or thin film formation or surface treatment. It can also be formed. Here, the surface including the feeding coil 90 and the surface including the power receiving coil 41 are parallel. The container 10 may be laid flat without being stacked.

  The power supply device 100 and the container 10 disposed on the power supply device 100 having the above-described configuration constitute a non-contact power transmission system. In the non-contact power transmission system of the present embodiment, by providing the load matching coil 42, even if the containers 10 are stacked, the Q value can be suppressed to a level that does not cause mutual interference for each container. This power can be supplied to the receiving coil 41 of each container.

  FIG. 8 is a perspective view showing a state in which the non-contact power transmission system according to the present embodiment is arranged in the storage 120. The power supply device 100 is placed on the upper surface 122 a of the main body 122 of the storage 120, and the container 10 is stacked on the placement surface 101 of the power supply device 100 in a direction D <b> 1 perpendicular to the placement surface 101. A lid 121 is placed on the main body 122 so as to surround the container 10 and the power supply apparatus 100. The main body 122 is provided with a temperature controller (not shown), and the temperature in the space surrounded by the lid 121 and the main body 122 can be adjusted.

  In the container 10 stored in the storage 120, the temperature / humidity is detected by the temperature / humidity sensor 52 and stored in the storage unit of the control circuit 51. The detection result by the temperature / humidity sensor 52 is transmitted to the power feeding apparatus 100 together with the ID information for each container 10, stored in the storage unit of the control unit 91, and transmitted to the outside by the antenna 93. The external device that has received the data transmitted from the antenna 93 can check the temperature and humidity for each container 10.

  Further, when the container 10 stored in the storage box 120 is taken out and the inside of the container 10 is to be observed with a microscope or the like, power supply cannot be performed by separating the container 10 from the power supply apparatus 100. Even in such a case, in the present embodiment, when the power reception voltage at the power reception coil 41 decreases, the secondary battery 45 or the solar battery 46 can continue to supply power to the temperature / humidity sensor 52 or the antenna 60. . Therefore, even if it takes out from the storage 120, the detection of the temperature and humidity in the container 10 can be continued.

  When the container 10 stored in the storage 120 is taken out and the inside of the container 10 is observed with a microscope or the like, an RF signal or the like is transmitted between the power supply apparatus 100 and a control circuit unit provided in the microscope. It is necessary to perform matching such as confirmation of ID by performing communication, and then transmit data transmitted from the antenna to the control circuit of the microscope. In the present embodiment, power can be secured in the power feeding apparatus 100 before the container 10 is taken out of the storage box 120 and carried to the microscope. Therefore, matching between the control unit 91 of the power supply apparatus 100 and the control circuit on the microscope side can be completed before the container 10 is taken out from the storage 120 and carried to the microscope, and immediately after the container 10 is installed in the microscope. In addition, communication between the control unit 91 of the power supply apparatus 100 and the control circuit on the microscope side is immediately possible.

  Further, when the power supply source is switched from the power receiving coil 41 to the secondary battery 45 or the like, information indicating that the container 10 is separated from the mounting surface 101 of the power feeding device 100 is recorded in the storage unit of the control circuit 51, When the supply source is switched from the secondary battery 45 or the like to the power receiving coil 41, information indicating that the container 10 is placed on the placement surface 101 of the power supply device 100 can be recorded in the storage unit of the control circuit 51.

  Thereby, it is possible to obtain information as to whether or not the container 10 has been taken out of the storage 120 due to switching of the power supply source and whether or not the container 10 has been returned to the storage 120. With this information, the timing at which the container 10 is taken out from the storage box 120 and the timing at which the container 10 is returned to the storage box 120 is recorded, and environmental information such as the management status of the container 10 and the temperature and humidity associated with the management status is obtained. It becomes possible.

With the configuration described above, the following effects are achieved according to the above embodiment.
(1) Since the power receiving coil 41 is disposed at a position avoiding the central portion 22 of the upper surface 21 of the lid portion 20 through which the inside can be seen, the container 10 can be viewed from above even when the lid portion 20 is placed on the plate body 30. Can be observed inside. Therefore, since the internal environment is not changed by opening the container 10, a more preferable culture environment can be provided.

(2) Since the power receiving coil 41 is provided in each container 10 and the power feeding coil 90 is disposed outside the container 10, power can be supplied to the power receiving coil 41 without contact with the power feeding coil 90. The temperature / humidity management for each container 10 can be accurately performed while ensuring the degree of freedom of arrangement of the container 10.

(3) Desired by forming the power receiving coil 41, the load matching coil 42, and the power feeding coil 90 with a conductive ink printing pattern, a flexible printed circuit board, or a conductive pattern formed by thin film formation or surface treatment. Can be formed accurately and inexpensively. Thereby, the electric power feeding unit 1 can be easily attached using the existing container 10.

(4) By disposing the control module 50, the antenna 60, and the conducting wire 70 on the side surface of the lid 20, the inside of the container 10 can be observed from above even when the lid 20 is placed on the dish body 30.

(5) By feeding the surface including the power supply coil 90 (a surface parallel to the placement surface 101) and the surface including the power reception coil 41 in parallel, power supply from the power supply coil 90 to the power reception coil 41 is efficiently performed. It can be carried out.
Furthermore, the container 10 in which the coil part 40 is arranged on the upper surface 21 of the lid part 20 is stacked in a direction perpendicular to the placement surface 101, thereby efficiently feeding power from the power feeding coil 90 to each power receiving coil 41. Can do.

(6) By using the load matching coil 42, it is possible to increase the overall Q value of the plurality of power receiving coils 41 while suppressing the power receiving coils 41 of the respective containers 10 to a Q value that does not cause mutual interference. .

(7) Since the secondary battery 45 and the solar battery 46 are provided so as to supplement the power received by the power receiving coil 41, even if the power receiving voltage at the power receiving coil 41 is reduced or no power is received. The control module 50 (temperature / humidity sensor 52) and the antenna 60 can be continuously driven by the secondary battery 45 and the solar battery 46.

A modification will be described below.
The coil part 40 may be provided on the peripheral part of the lower surface of the cover part 20, the side surface of the cover part 20, or the side surface of the dish body 30 in addition to the peripheral part of the upper surface 21 of the cover part 20. Further, the control module 50, the antenna 60, and the conductive wire 70 are arranged on the side surface of the lid portion 20, the peripheral portion of the upper surface 21 of the lid portion 20, the peripheral portion of the lower surface of the lid portion 20, or the side surface of the dish body 30. May be. With these configurations, the inside of the container 10 can be observed from above or below even when the lid 20 is placed on the dish body 30.

  In FIG. 7, the four regions 102, 103, 104, and 105 are arranged on the placement surface 101, but the number and arrangement of the regions in which the container 10 is arranged are not limited to this.

  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, and can be improved or modified within the scope of the purpose of the improvement or the idea of the present invention.

  As described above, the power supply unit 1 and the non-contact power transmission system according to the present invention are useful in applications where strict environmental management is required and when there is a restriction on the arrangement space of containers.

DESCRIPTION OF SYMBOLS 1 Feeding unit 10 Container 20 Lid part 22 Central part 30 Dish main body 40 Coil part 41 Power receiving coil 42 Load matching coil 45 Secondary battery 46 Solar cell 50 Control module 51 Control circuit 52 Temperature / humidity sensor 60 Antenna 90 Feeding coil 100 Feeding device 101 Placement surface 120 Storage

Claims (16)

A power supply unit that is attached to a container that includes a dish body that can be seen through and a lid that can see through the inside of the dish body,
A power receiving coil attached to the lid or the plate body;
A secondary battery attached to the lid or the plate body;
With
A power feeding unit that feeds power to the power receiving coil by energizing a power feeding coil provided in non-contact with the power receiving coil outside the container, and charges the secondary battery from the power receiving coil. A controller that is attached to the lid or the dish body, and further operates by power supplied from at least one of the power receiving coil and the secondary battery;
The power supply unit according to claim 1, wherein the control unit performs control to switch a power supply source from the power reception coil to the secondary battery when a power reception voltage of the power reception coil becomes lower than a preset value.   The power supply unit according to claim 1, wherein the power receiving coil is a conductive ink printing pattern, a flexible printed circuit board, or a conductive pattern formed by thin film formation or surface treatment. Further comprising an antenna attached to the lid or the dish body,
The power supply according to any one of claims 1 to 3, wherein the antenna transmits a signal to the outside of the container by electric power supplied from at least one of the power receiving coil and the secondary battery. unit. A wireless communication unit attached to the lid or the dish body;
The power supply unit according to any one of claims 1 to 4, wherein the wireless communication unit performs wireless communication with an external device using electric power supplied from at least one of the power receiving coil and the secondary battery. An environmental sensor attached to the lid or the dish body;
The power supply unit according to any one of claims 1 to 5, wherein the environmental sensor is operated by electric power supplied from at least one of the power receiving coil and the secondary battery.   The power supply unit according to claim 6, wherein the environmental sensor is a temperature and humidity sensor.   The power supply unit according to any one of claims 1 to 7, wherein the container is a petri dish for performing culture. A solar cell attached to the lid or the dish body;
The power feeding unit according to any one of claims 1 to 8, wherein at least one of the power receiving coil, the secondary battery, and the solar battery is used as a power supply source.   The power feeding unit according to claim 9, wherein the solar battery charges the secondary battery. A container to which the power supply unit according to any one of claims 1 to 10 is attached;
A power feeding device provided with a mounting surface on which the container is placed, the power feeding coil provided;
A non-contact power transmission system comprising:   The non-contact power according to claim 11, wherein the feeding coil is a conductive ink printing pattern, a flexible printed circuit board, or a conductive pattern formed by thin film formation or surface treatment formed on the mounting surface. Transmission system.   The contactless power transmission system according to claim 12, wherein a surface including the power feeding coil and a surface including the power receiving coil are parallel to each other.   The contactless power transmission system according to claim 11, wherein a plurality of the containers are stacked in a direction perpendicular to the placement surface.   While the power receiving coil is receiving power, power is supplied from the power receiving coil to a predetermined load, and when the power feeding coil stops receiving power, the power receiving coil is switched to the secondary battery to supply power to the load. The contactless power transmission system according to any one of claims 11 to 14.   When the power supply source is switched from the power receiving coil to the secondary battery, information indicating that the container is separated from the mounting surface is recorded, and the power supply source is switched from the secondary battery to the power receiving coil. The contactless power transmission system according to claim 15, further comprising a recording unit that records information indicating that the container is placed on the placement surface when the container is placed.

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