TW201223063A - Non-contact power feeding device - Google Patents

Abstract

A non-contact power feeding device, including a primary side power transmission unit 60 having a primary coil 61 for accepting power supply and generating alternating magnetic flux, a secondary side power reception unit 70 having a secondary coil 71 for accepting the alternating magnetic flux from the primary coil 61 and generating an induced current, and a sensor for status detection. The non-contact power supply further includes a first magnetic core 110 disposed in the primary side power transmission unit 60 and corresponding to the primary coil 61, a second magnetic core 120 disposed in the secondary side power reception unit 70 and corresponding to the secondary coil 71. At least one of the first magnetic core 110 and the second magnetic core 120 has a protrusion 113 having an opening 114 extending toward the first magnetic core 110 and the second magnetic core 120. The sensor 63 is disposed on the opening 114.

Description

201223063 VI. TECHNOLOGICAL FIELD OF THE INVENTION [Technical Field] The present invention relates to a contactless power supply device that includes a primary side power transmission device that includes a primary coil that generates alternating magnetic flux and a primary side power receiving The device includes a primary coil that receives an alternating magnetic flux of the primary coil to generate an induced current, and an inductor for detecting a change in state. [Prior Art] For the non-contact power supply device, for example, a document in Patent Document 1 is known. In the contactless power supply device of Patent Document 1, when a metal foreign matter is interposed between the casing of the primary power transmitting device and the casing of the secondary power receiving device, the surface frequency of the coil is changed to a metal current. Foreign matter flows. Therefore, as the eddy current is generated, the temperature of the toothbrush and the charging device may increase excessively. In this regard, in the contactless power supply device of the same document, the temperature of the primary side power transmission device is detected by a thermal resistor provided at the center of the primary coil. When it is determined that the temperature of the primary side power transmitting device detected by the thermistor is too high, control for interrupting the primary battery charging is performed. [Prior Art Document] [Patent Document 1] Japanese Laid-Open Patent Publication No. 2009-273260 No. 201223063 [Disclosure] [Problems to be Solved by the Invention] In the above-described contactless power supply device, a thermal resistor is disposed in Where the magnetic flux of the primary coil passes, therefore, an eddy current is generated in the thermistor. When a large eddy current is generated in the thermistor, the temperature of the thermistor itself rises excessively, so that the temperature rise of the primary side power transmitting device due to the metal foreign matter cannot be properly detected. Further, in the non-contact power supply device in which not only a thermal resistor but also another inductor (e.g., a magnetic sensor) is provided, the inductor may not function properly due to the influence of the magnetic flux. The present invention has been made in view of such circumstances, and an object thereof is to provide a contactless power supply device which can reduce the influence of magnetic flux on an inductor. [Technical means for solving the problem] An aspect of the present invention is a contactless power supply device. The apparatus includes a primary side power transmitting device including a primary coil that receives an alternating magnetic flux by receiving power supply, and a secondary side power receiving device that includes a secondary coil that receives an alternating magnetic flux of the primary coil to generate an induced current. And sensors to detect changes in state. Further, the apparatus further includes a first magnetic core corresponding to the primary coil, and a second magnetic core provided in the secondary power receiving device corresponding to the secondary coil. At least one of the first magnetic core and the second magnetic core is provided with a protruding portion having a hole extending in a direction in which the primary coil and the secondary coil are arranged. The aforementioned inductor is provided in the aforementioned hole. According to this configuration, the influence of the magnetic flux on the inductor can be reduced.

4 S 201223063 [Embodiment] (First embodiment) A first embodiment of the present invention will be described with reference to Figs. 1 to 5 . Further, in the present embodiment, an electric toothbrush and a charging device thereof are shown as an example of embodying the contactless power supply device of the present invention. The overall configuration of the contactless power supply device i is shown in FIG. The contactless power supply device 1 includes an electric toothbrush 10 that vibrates a tooth to clean teeth, and a charging device 20 that charges the electric toothbrush 10. The electric toothbrush 10 includes a grip portion 11 that is gripped by a user when the teeth are cleaned, and a cleaning portion 13 that can be attached to the grip portion 拆 and removed from the grip portion η. The casing 14 of the grip portion 11 (hereinafter simply referred to as "toothbrush case 14") is made of a non-magnetic core and a resinous material. The charging device 20 includes a charging device casing 21 on which an electric toothbrush is placed, and a primary power transmitting device 60 that receives alternating magnetic power to generate alternating magnetic flux for supplying alternating electric power to the primary side power transmitting device 6 Primary side circuit 30. The charging device housing 2 is made of a non-magnetic anger and resinous material. The primary side power transmitting device 60 and the primary side circuit 3 are respectively provided in the charging device casing 21. The holding portion 11 includes a secondary side power receiving device 7 that receives an alternating magnetic flux of the secondary power transmitting device 6A and generates an induced current, and receives a secondary battery that is charged by the power supply from the secondary power receiving device 70. 1 $ and a secondary side circuit breaker 2 for supplying electric power to the secondary battery 15 from the under-power receiving device 70. The display unit 12 includes a vibration mode and a charging state indicating the electric toothbrush 1 ,, and The actuator 201223063 (not shown) that vibrates the cleaning unit 13. The secondary side power receiving device 70, the secondary side circuit 4A, the secondary battery 15, and the actuator are provided in the toothbrush case μ, respectively. In the contactless power supply device 1, the primary power transmitting device 6A and the secondary power receiving device 7G constitute a power transmitting portion 50 for transmitting electric power from the charging device % to the electric toothbrush 10. In other words, the power transmission unit 5 is provided as means for receiving the power supply from the commercial power source to charge the secondary battery 15. The detailed configuration of the power transmission unit 5A will be described with reference to Fig. 2 . The primary side power transmitting device 60 includes a primary coil & which receives an alternating magnetic flux from a power supply of a direct current power source £1 (refer to FIG. 5), and a can magnet; and 1HUX is formed as a secondary coil 61. The first magnetic core of the magnetic circuit of the magnetic flux. Further, the '-secondary power transmitting device 6' includes a top wall 62 of the charging device casing 21 (hereinafter simply referred to as "the casing top wall 62"), and a thermal resistor 63 for detecting the temperature of the casing top wall 62. The DC power supply £1 is a DC power converted from AC power of a commercial power supply. The first-side power receiving device 70 includes a secondary coil 71 that receives an alternating magnetic flux of the primary coil 61 to generate an induced current, and the flat-shaped magnetic core 12 is used as a magnetic circuit for forming a magnetic flux generated in the secondary coil 71. The second core and the bottom wall 72 of the toothbrush housing 14 (hereinafter simply referred to as "the housing bottom wall 72"). Here, the dimensions of the respective portions defining the can core 110 and the flat core 12 are as follows. The can core 110 includes a protruding portion 113, and the length from the base end portion 113A to the front end portion 113B of the protruding portion 113 is defined as "protrusion height HA". Further, the can core 11 includes a bottom wall portion m, and the length from the bottom surface 111A to the top surface of the bottom wall portion 111 is defined as "bottom wall portion".

S 6 201223063 Thickness HB". Further, the total length of the projection height HA and the thickness of the bottom wall portion HB is defined as "primary thickness HC". In addition, the flat core 12 includes a portion 121 corresponding to the protruding portion 113 (hereinafter simply referred to as a protruding portion corresponding portion 121), and the length of the bottom surface 121 to the top surface 12lB of the protruding portion corresponding portion 121 is set to be twice. Side thickness HD. In this example, each size is set such that the following relationship can be established. (a) The protrusion is still Η The A is larger than the thickness hb of the bottom wall. (b) The protrusion HA degree is greater than the secondary side thickness hd. (c) The thickness of the bottom wall portion HB is greater than the thickness hD of the secondary side. (d) - The secondary side thickness HC is greater than the secondary side thickness! ^£). The configuration of the can core 11'' will be described with reference to Fig. 3'. The can core 110 includes a disk-shaped bottom wall portion U, a cylindrical outer peripheral portion 112 provided on the outer periphery of the bottom wall portion 111, and a cylindrical projecting portion 113 provided at a central portion of the bottom wall portion ln. A circular hole 114 that penetrates the bottom wall portion lu and the protruding portion 113 along the longitudinal direction of the protruding portion 113 is provided at a central portion in the radial direction of the protruding portion 113. The protruding portion 11j and the hole 114 are slanted along the arrangement direction of the primary coil 61 and the secondary coil 71. The thermal resistor 63 is provided at the front end portion of the hole 114. The thermal resistance II 63 is made of high thermal conductivity; ^ is then applied to the top wall of the casing. Further, the wiring of the thermistor 63 passes through the hole 114 of the protruding portion ι 3 of the can core 11 ,, and the outside of the can core 11 引 is taken out from the opening of the bottom wall portion U1. The outer peripheral portion 112 is provided as a portion of the magnetic flux generated outside the radially outer side of the bundle primary coil 61. The protruding portion 113 is provided as a portion of the magnetic flux generated on the steering center side of the bundle primary coil 。. i 201223063 The non-contact power supply device 1 is in a state in which the electric toothbrush 10 is disposed on the charging device 20, that is, the top surface of the housing top wall 62 of the primary side power transmitting device 6A and the bottom wall of the housing of the secondary power receiving device 70 When the bottom surfaces of 72 are in contact with each other, 'the secondary battery 15 is charged. The planar configuration of the primary coil 61 is shown in FIG. The primary coil 61 is formed as a disk-shaped coil in which a wire is wound concentrically. The inner end portion 61A and the outer end portion 61B of the primary coil 61 are connected to the primary side circuit 30, respectively. The protruding portion 113 of the can core 11 系 is provided in a circular space 61 of the space of the central portion of the primary coil 61 (the end portion 61A and the end portion 61B of the primary coil 61 are respectively passed through the bottom wall of the can core 110). The portion 111 leads to the outside of the can core 11 。. Further, the secondary coil 71 also forms a disk-shaped coil similarly to the primary coil 61. Referring to Fig. 5, the primary side circuit 3 of the charging device 20 and the electric toothbrush 10 will be described. In the configuration of the secondary side circuit 40, in Fig. 5 and the description thereof, the primary coil 61 is "L1", and the secondary coil 71 is indicated by "L2". The primary side circuit 3 of the charging device 20 is used. Full-bridge composite resonant circuit for generating alternating power...: Under (four) way 3 〇 series includes a full-bridge circuit 31 composed of a plurality of switching elements, a control circuit 33 for controlling switching elements, a thermal resistor 63, a fixed resistor R5, a direct current The power supply and the primary coil L1. The full bridge circuit 31 includes four switching elements formed by field effect transistors (FETs), that is, the first switching element n, the second switching element F2, the third switch 7L, F3, And a fourth switching element F4. In addition, the full bridge circuit 31 is packaged. Resonant circuit 32. The resonant circuit 32 and the capacitance between the lines _, grant

S 8 201223063 is accumulating internal energy of the capacitor as energy of the electric field and accumulating energy as a magnetic field inside the coil. The resonant circuit 32 includes a primary coil L1 that supplies alternating power from each of the switching elements F1 to F4, a capacitor C1 that is provided in series with the primary coil L1, and a capacitor C2 that is provided in parallel with the primary coil L1. Capacitor C1 and capacitor C2 perform zero current switching, respectively. The capacitor C1 is provided as a circuit element for reducing the switching loss when the switching elements F1 to F4 are turned off. The capacitor C2 is provided as a circuit element for reducing the switching loss when the switching elements F1 to F4 are turned on. Each of the switching elements F1 to F4 includes built-in diodes D1 to D4. In Fig. 5, the portion including the built-in diodes D1 to D4 is represented by an equivalent circuit. The first switching element F1 is connected in parallel to the first built-in diode D1. The second switching element F2 is connected in parallel to the second built-in diode D2. The third switching element F3 is connected in parallel to the third built-in diode D3. The fourth switching element F4 is connected in parallel to the fourth built-in diode D4. The control circuit 33 is a microcomputer. The control circuit 33 is connected to each of the switching elements F1 to F4 via a gate resistor. That is, the control circuit 33 is connected to the first switching element F1 via the first gate resistor R1, to the second switching element F2 via the second gate resistor R2, and to the third switching element F3 via the third gate resistor R3. The fourth switching element F4 is connected via the fourth gate resistor R4. The secondary side circuit 40 of the electric toothbrush 10 is a bridge type rectifying circuit that converts alternating electric power into direct current electric power. The secondary side circuit 40 includes a full-wave rectifying circuit 41 that converts the AC power of the secondary coil L2 to 201223063 into DC power, and the DC/DC converter 42 that steps down the DC power converted by the full-wave rectifying circuit 41. And a secondary battery 15 that stores electric power. Further, the secondary side circuit 40 includes a capacitor C3 for matching the impedance of the primary side circuit 30 and the secondary side circuit 40, and a secondary coil L2. The capacitor C3 is connected in parallel to the secondary coil L2. The full-wave rectifying circuit 41 includes four diodes, that is, a fifth diode D5, a sixth diode D6, a seventh diode D7, and an eighth diode D8. The output terminal P1 of the full-wave rectifying circuit 41 and the output terminal P2 are connected in parallel to the smoothing capacitor C4. Here, the power supply operation between the primary coil L1 and the secondary coil L2 will be described. The control circuit 33 applies a control voltage to each of the switching elements F1 to F4 via the gate resistors R1 to R4, and switches the switching of the switching elements F1 to F4. That is, the on or off of the first switching element F1 and the fourth switching element F4 and the cutting or conduction of the second switching element F2 and the third switching element F3 are alternately switched in response to the respective gate voltages. Thereby, alternating electric power is induced in the primary coil L1, and thus a high-frequency alternating magnetic flux is generated in the primary coil L1. In the secondary coil L2, alternating electric power is generated by interlinking with the alternating magnetic flux of the primary coil L1. This alternating power is input to the full-wave rectifying circuit 41 via the capacitor C3, and is converted into direct current power by full-wave rectification. The converted DC power is stepped down by the DC/DC converter 42 and supplied to the secondary battery 15 of the load. Thereby, the secondary battery 15 is charged. When the metal foreign matter is present between the primary power transmitting device 60 and the secondary power receiving device 70, the control circuit 33 performs "charge interruption control" for stopping the power transmission of the primary coils 61 to 201223063 and 1. In the following, the primary coil L1 <5?-u "1#/, the state in which the metal foreign matter is interposed between the long coils L2 is set to the = state", and the state in which the metal foreign matter is not interposed is set to the "normal state". "." In the case of a different Wei state, an eddy current is generated in the metal foreign matter due to the influence of the south frequency magnetic flux generated by the primary coil L1 and the secondary coil L2. As the temperature of the metal foreign matter rises as a result of the thirst current, the temperature of the top wall 62 of the casing and the bottom wall 7.2 of the casing also rises. As the temperature of the top wall 62 of the casing rises, the temperature of the top wall 62 of the casing which is detected by the thermistor 63 becomes a temperature f higher than the normal state, so that the voltage of the input control circuit 33 also becomes a normal state. The voltage is still. Further, the control circuit 33 receives the node voltage between the thermistor 63 and the fixed resistor R5. The control circuit 33 calculates the temperature of the thermistor 63 as the estimated temperature T based on the input voltage, and determines whether or not the estimated temperature τ is equal to or higher than the preset reference temperature TX. The control circuit 33 interrupts the supply of electric power to the primary coil L1 when the estimated temperature τ is equal to or higher than the reference temperature τ 。. That is, the switching between the conduction and the interruption of each of the switching elements F1 to F4 is interrupted. Thereby, the charging of the secondary battery 15 is interrupted because the primary coil L1 does not induce the alternating electric power. On the other hand, when the estimated temperature T is less than the reference temperature τ ,, the control circuit 33 continues the supply of electric power to the primary coil L1. Here, the method of setting the reference temperature 说明 will be described. In the non-contact power supply device 1, in the normal state, the temperature of the thermal resistor 63 itself rises due to the heat generated by the primary coil L1 or the like. Therefore, in the abnormal state, the temperature detected by the thermistor 63 includes the temperature rise amount of the thermistor 63 itself in the normal state, and the temperature rise of the top wall 62 of the casing due to the eddy current of the metal foreign matter of 201223063. the amount. In other words, it is necessary to appropriately determine the abnormal state based on the estimated temperature T, and it is necessary to set the reference temperature τ 顾 in consideration of the temperature rise amount of the thermistor 63 in the normal state. In the memory portion of the control circuit 33, the highest temperature at which the thermal resistor 63 is predicted in the normal state or the temperature corresponding thereto is stored in advance as the reference temperature TX. Thereby, even if metal foreign matter is not interposed, it is determined that the frequency of the abnormality of the contactless power supply device 1 is lowered based on the increase in the estimated temperature τ. The contactless power supply device of the first embodiment has the following advantages: (1) the contactless power supply device 1 includes a corresponding primary coil 61, a can core 11 〇 of the secondary power transmission device 60, and corresponding two The secondary line 71 is provided on the flat-shaped magnetic core 12 of the secondary side power receiving device 7A. Further, the dog-out portion 113 of the core 110 is provided with a hole 114 extending in the direction in which the primary coil 6A and the secondary line are arranged. Further, a heat exchanger 63 is provided in the hole 114. According to this configuration, the magnetic flux > f generated on the center side of the secondary coil 61 passes over the protruding portion 113_. That is, the wall portion of the protruding portion 113 forms a magnetic circuit of a magnetic flux generated on the center side of the coil 61. Thereby, the magnetic flux generated at the center side of the -, (four) 61 is hard to cross the thermal resistor 63. Therefore, the magnetic flux of the cedar, the second _ 61 can affect the thermistor 63. According to the configuration of the above (1) 'due to reducing the influence of the primary line 6 on the resistance of the f-resistor 63', it is difficult to generate the electric resistance in the thermal resistor 63. This is because the 'n-n63 itself (four) field correction is suppressed, ^ 〇 12 201223063 The minute temperature rise due to the metal foreign matter is detected by the thermistor 63. Specifically, the temperature of the thermistor 63 itself rises in a normal state in which the magnetic flux of the secondary coil 61 is faintly affected by the thermal resistance, and the metal coil is not sandwiched between the secondary coil 61 and the secondary _71. The extent of the reduction. Therefore, the reference temperature τ 判定 for the determination of the charge interruption control can be set to a smaller value. Therefore, when it is estimated that the degree of rise of the temperature enthalpy is small, it is possible to detect whether or not the temperature between the charging device housing 21 and the toothbrush housing 14 is small by comparing the temperature Τ with the reference temperature ΤΧ. Metal foreign matter 0 (3) The wiring of the 'resistor 63' in the contactless power supply device 1 passes through the hole 114 of the protruding portion 113 of the can core uo, and the can core 110 is taken out from the opening of the bottom wall portion iu Outside. According to this configuration, it is difficult for the wiring of the thermistor 63 to be in contact with the magnetic flux (4) of the primary coil to reduce the influence of the magnetic flux of the secondary _61 on the thermal resistor 63. In addition, the degree of temperature rise of the thermistor 63 itself can be reduced. When the estimated temperature T calculated based on the output of the thermal resistance 11 63 is the reference temperature τ ', the non-contact power supply device 1 is ii with metal foreign matter interposed between the body 21 and the toothbrush case 14; The external reference 'this reference temperature τ χ is the amount of temperature rise of the thermistor 63 when the state in which the metal foreign matter is not caught is added, and is set in advance. In the configuration of the above (1) and (3), the temperature of the thermal resistance is increased by the increase in the temperature of the thermal resistor 63, and the reference temperature τ is increased by the increase in the degree of the thermal resistor 63 itself. Thereby, the temperature τ 13 of 13 201223063 can be set to a smaller value in advance, so that the slight temperature rise of the top wall of the casing due to the metal foreign matter can be detected. (5) In the contactless power supply device i, the protruding portion ι3 of the can core η is disposed in a circular space 61 of the space of the central portion of the primary coil 61 (:, and the thermal resistor 63 is provided at the protruding portion 113. Since the primary coil 61 receives power supply from a commercial power source, the magnetic flux generated by the primary coil 61 has a higher magnetic flux density than the magnetic flux generated by the secondary coil 71. Therefore, when the metal foreign matter is caught in the charging device housing When it is between the 21 and the toothbrush case 14, the temperature of the metal foreign matter becomes higher in the vicinity of the primary coil 61 than in the vicinity of the secondary coil 71. According to the above configuration of the non-contact power supply device i, the secondary coil 71 (the secondary side power receiving device 7 ()) is provided with the heat resistor 63. The heat resistor 63 is provided in the secondary coil 61, and the temperature rise of the metal foreign matter can be more reliably detected. (6) In the secondary coil When the thermal resistor is set to 71, in order to control based on the output of the thermistor 63 #, it is necessary to transmit the output of the thermistor 63, the secondary side of the money receiving device 70 to the control power of the secondary side power transmitting device (9). Point 'if according to the above (5) of the contactless power supply device 1 == The output of the resistor 63 is complicated in the primary side power transmitting device 6. The circuit 1 of the first circuit 33' can thereby suppress the formation of the primary side thickness of the charging device 2, the HC system is greater than the thickness of the secondary side, HD is the same or large (7 In the contactless power supply device 1, - the thickness of the human side HD. According to this configuration,

S 14 201223063 The magnetic flux density of the protruding portion corresponding portion 121 passing through the secondary side power receiving device 70 can be reduced as compared with the case of the human side thickness Hc. Thereby, the magnetic flux generated by the secondary coil 71 is hard to be interlinked with the thermistor 63, and the influence of the magnetic flux of the secondary coil 71 on the thermistor 63 can be reduced. In addition, the temperature of the thermal resistor can be reduced. The degree of rise. In the contactless power supply device 1, the protruding portion 113 of the can core 110 is cylindrical. That is, the hole 114 is provided in the radially central portion of the protruding portion 113. Further, a thermal resistor 63 is provided in the hole 114. According to this configuration, the magnetic flux generated on the center side of the primary coil 61 passes through the wall portion of the cylindrical protruding portion i 13. Therefore, compared with the case where the protruding portion 113 having a cylindrical shape other than the cylindrical portion is provided The density of the magnetic flux generated on the center side of the one-a (9)-secondary coil 61 is higher than the density of the magnetic flux generated on the radially outer side of the seventh coil 61. The thermistor 63 is provided in the primary coil 高 having a high magnetic flux density. From the side, the temperature rise of the casing top wall 62 caused by the metal foreign matter can be appropriately detected. i:: In the contact power supply device 1, at least one of the -secondary coil 61 and the secondary coil 71 has a different shape and has a circular shape, respectively. If the primary coil 61 and the ^1 are in the king, the horse has a glimpse. 'The rate of the electric toothbrush 1 〇 relative to the charging device 2 。. When ra and w are specific reference angles, the communication effect of the magnetic flux can be improved. When the electric toothbrush 10 is placed on the charging device 2, if the relative rotational position deviation occurs, the communication efficiency of the magnetic flux is transmitted. significantly reduce. c, 15 201223063 In this regard, if the contactless power supply-secondary line_secondary line...phase 4==^^ changes with respect to the rotation angle of the charging device 2G, it is substantially the same. Therefore, it is possible to suppress the charging efficiency caused by the charging method of the 1M mesh. (11) In the contactless power supply device 1, the can core H0 includes a cylindrical outer peripheral portion 112 surrounding the outer circumference of the sub-line ® 61, and a protruding portion H3 disposed in the circular space 61C of the coil 61. According to this configuration, since the protruding portion 113 is provided on the center side of the secondary coil 61 having a high magnetic flux density, the magnetic flux transmission efficiency of the primary coil 61 to the secondary coil 71 can be improved. (12) When the shape of the magnetic core forming the magnetic circuit is different from that of the cylindrical shape (cylindrical shape), for example, a four-pulse core has a ridge line, and the magnetic flux is concentrated on a portion of the ridge line. Therefore, the transmission efficiency of the magnetic flux from the secondary side power transmitting device 6A to the primary side power receiving device 70 may be lowered. In this regard, in the contactless power supply device 1, the hole 114 of the protruding portion 113 has a cylindrical shape. Thereby, it is possible to suppress the concentration of the magnetic flux to a part. It is possible to suppress a decrease in the transmission efficiency of the magnetic flux from the primary side power transmitting device 60 to the secondary side power receiving device 7A. (13) In the contactless power supply device 1, the protruding portion 113 of the can core 11A is provided in the circular space 61C of the primary coil 61, and the thermal resistor 63 for detecting the temperature of the top wall 62 of the casing is provided in the hole 114. . According to this configuration, since the thermistor 63 is provided as an inductor for detecting the temperature, an increase in cost can be suppressed. (First embodiment) 201223063 A second embodiment of the present invention will be described with reference to Figs. 6 and 7 . The contactless power supply device 1 of the second embodiment is configured by changing a part of the contactless power supply device 1 of the first embodiment as follows. That is, the non-contact power supply device 1 of the second embodiment is provided with an EER type magnetic core 130A instead of the can core 110 of the first embodiment. Further, an EER type magnetic core 130B is provided instead of the flat core 120. The details of this change section are shown below. In the other points, the same components as those in the first embodiment are used. Therefore, the same reference numerals are given to the same reference numerals, and a part or the whole of the description will be omitted as appropriate. The detailed configuration of the power transmission unit 50 will be described with reference to Fig. 6 . The primary power transmitting device 60 includes a primary coil 61 that receives an alternating magnetic flux from a power supply from a DC power source E1 (see FIG. 5), and an EER core 130A as a magnetic flux that forms a magnetic flux generated in the primary coil 61. The first core of the road. Further, the primary side power transmitting device 60 includes a housing top wall 62 as a top wall of the charging device housing 21, and a thermal resistor 63 for detecting the temperature of the housing top wall 62. The secondary side power receiving device 70 includes a secondary coil 71 that receives an alternating magnetic flux of the primary coil 61 to generate an induced current, and the EER core 130B serves as a second magnetic circuit that forms a magnetic flux generated in the primary coil 71. Magnetic anger, and a housing bottom wall 72 as the bottom wall of the toothbrush housing 14. The structure of the EER type magnetic core 130A will be described with reference to Fig. 7 . As shown in Fig. 7 (a), the EER type magnetic core 130A includes a rectangular bottom wall portion 131, a rectangular outer wall portion 132, and a cylindrical projection portion 133. The outer wall portion 132 is provided at both end portions of the bottom wall portion 131 in the longitudinal direction. 17 201223063 The protruding portion 133 is provided at a central portion of the bottom wall portion 131. A curved surface is formed on the inner surface of each of the outer wall portions 132 of the protruding portion 133. As shown in Fig. 7 (b), a hole 134 that penetrates the bottom wall portion 131 and the protruding portion 133 along the longitudinal direction of the protruding portion 133 is provided at a central portion in the radial direction of the protruding portion 133. The protruding portion 133 and the hole 134 are disposed along the arrangement direction of the primary coil 61 and the secondary coil 71. A thermal resistor is provided at the front end portion of the hole 134. Each of the outer wall portions 132 is provided as a portion of the magnetic flux generated outside the radially outer side of the bundle primary coil 61. The protruding portion 133 is provided as a portion of the magnetic flux generated at the radial center side of the bundle primary coil 61. The EER type magnetic core 130B of the secondary side power receiving device 70 has substantially the same structure as the EER type magnetic core 130A of the primary side power transmitting device 6A except for the difference in the structure of the protruding portion. That is, the EER type magnetic core 13A has a protruding portion 135 having a solid structure in which no hole is formed in place of the protruding portion 133. According to the second embodiment, in addition to the advantages of the first embodiment, the advantages of the influence of the magnetic flux on the inductor can be reduced, and the same as (2) to (9), (11) In addition to the advantages of (13), the following advantages (14) can be obtained. (14) In the contactless power supply device 1, the EER type core yoke includes a rectangular outer wall portion 132 located on the outer circumference of the primary coil 61, and a protruding portion 133 disposed in the circular space 61C of the primary coil 61. According to this configuration, since the dog 133 is provided on the center side of the primary coil 61 having a high magnetic flux density, the magnetic flux transmission efficiency of the primary coil 61 to the secondary coil 71 can be improved. (Third embodiment) 201223063 A third embodiment of the present invention will be described with reference to Figs. 8 and 9. The contactless power supply device 1 of the third embodiment is configured by changing a part of the contactless power supply device 1 of the first embodiment as follows. That is, the EE type magnetic core 140A is provided in the non-contact power supply device 1 of the third embodiment to replace the can core 110 of the first embodiment. Further, an EE type magnetic core 140B is provided instead of the flat core type 120. The details of this change section are shown below. In the other points, the same components as those in the first embodiment are used. Therefore, the same reference numerals are given to the same reference numerals, and a part or the whole of the description will be omitted as appropriate. The detailed configuration of the power transmission unit 50 will be described with reference to Fig. 8 . The primary power transmitting device 60 includes a primary coil 61 that receives an alternating magnetic flux from a power supply from a DC power source E1 (see FIG. 5), and an EE-type magnetic core 140A as a magnetic field that forms a magnetic flux generated in the primary coil 61. The first core of the road. Further, the primary side power transmitting device 60 includes a housing top wall 62 as a top wall of the charging device housing 21, and a thermal resistor 63 for detecting the temperature of the housing top wall 62. The secondary power receiving device 70 includes a secondary coil 71 that receives an alternating magnetic flux of the primary coil 61 to generate an induced current, and the EE core 140B serves as a second magnetic circuit that forms a magnetic flux generated in the secondary coil 71. A magnetic core, and a housing bottom wall 72 as a bottom wall of the toothbrush housing 14. The configuration of the EE type magnetic core 140A will be described with reference to Fig. 9 . As shown in Fig. 9 (a), the EE type magnetic core 140A includes a rectangular bottom wall portion 141, a rectangular outer wall portion 142, and a rectangular projecting portion 143. The outer wall portion 142 is provided at both end portions of the bottom wall portion 141 in the longitudinal direction. Projection 19 201223063 The portion 143 is provided at the center portion of the bottom wall portion 141. As shown in Fig. 9(b), a hole 144 that penetrates the bottom wall portion 141 and the protruding portion 143 along the longitudinal direction of the protruding portion 143 is provided at a radially central portion of the protruding portion 143. The protruding portion 143 and the hole 144 are disposed along the arrangement direction of the primary coil 61 and the secondary coil 71. The heat resistor 63 is provided at the front end portion of the hole 144. Each of the outer wall portions 142 is provided as a portion of the magnetic flux generated outside the radially outer side of the bundle primary coil 61. The protruding portion 143 is provided as a portion of the magnetic flux generated at the radial center side of the bundle primary coil 61. The EE-type magnetic core 140B of the secondary-side power receiving device 70 has substantially the same structure as the EE-type magnetic core 140A of the primary-side power transmitting device 6A except for the difference in the structure of the protruding portion. That is, the EE type magnetic core 140B has a solid portion protruding portion 145 having no hole formed in place of the protruding portion 143. According to the third embodiment, in addition to the advantages of the first embodiment, the advantages of the influence of the magnetic flux on the inductor can be reduced, and the same as (2) to (6), (11) In addition to the advantages of (13), the following advantages (15) can be obtained. (i5) In the contactless power supply device 1, the EE type magnetic core 140A includes a rectangular outer wall portion 142 located on the outer circumference of the primary coil 61, and a protruding portion 143 disposed in the circular space 61C of the primary coil 61. According to this configuration, since the protruding portion 143 is provided on the center side of the primary coil 61 having a high magnetic flux density, the magnetic flux transmission efficiency of the primary coil 61 to the secondary coil 71 can be improved. (Fourth embodiment) A fourth embodiment of the present invention will be described with reference to Figs. 10 and 11 . 201223063 The non-contact power supply device of the fourth embodiment is configured by changing a part of the contactless power supply device 1 of the first embodiment as follows. That is, in the contactless power supply device 1 of the fourth embodiment, the 磁-shaped magnetic core 15A is provided instead of the can core 110 of the first embodiment. In addition, an EI type magnetic core 15A is provided instead of the flat core 120. The details of this change section are shown below. The other points are the same as those in the first embodiment. Therefore, the same reference numerals will be given to the same reference numerals, and a part or all of the description will be omitted as appropriate. The detailed configuration of the power transmission unit 50 will be described with reference to Fig. 10 . The primary side power transmitting device 60 includes a primary coil η that receives an alternating magnetic flux from a power supply of a DC power source (see FIG. 5), and an EI core 150A as a magnetic field that forms a pass generated in the primary coil 61. The first core of the road. Further, the primary side power transmitting device 6 includes a casing top wall 62 as a top wall of the charging device breaking body 21, and a thermal resistor 63 for detecting the temperature of the casing top wall 62. The primary side power-measuring device 70 includes a secondary coil 71 that receives an alternating magnetic flux of the primary coil 61 to generate an induced current, and the EI-type magnetic core 150B serves as a magnetic circuit that forms a magnetic flux generated in the secondary coil 71. A second magnetic core, and a housing bottom wall 72 as a bottom wall of the toothbrush housing 14. The configuration of the EI type magnetic core 15A will be described with reference to Fig. 11 . As shown in Fig. 11 (a), the EI type core i5A includes a rectangular bottom wall portion 15 which is a rectangular outer wall portion 152, and a rectangular projecting portion 153.

The outer wall portion 152 is provided at both end portions of the bottom wall portion 151 in the longitudinal direction. The protruding portion 153 is provided at a central portion of the bottom wall portion 151. Further, the structure of the EI type magnetic core 15A21 201223063 corresponds to the fact that the protrusion height HA is increased more than the EE type core 140A (see Fig. 9), and the other points are substantially the same as the ee type core 140A. As shown in Fig. 11 (b), a hole 154 that penetrates the bottom wall portion 151 and the protruding portion 153 along the longitudinal direction of the protruding portion 153 is provided at a central portion in the radial direction of the protruding portion 153. The protruding portion 153 and the hole 154 are provided along the arrangement direction of the primary coil 61 and the secondary coil 71. The thermal resistor 63 is provided at the front end portion of the hole 154. Each of the outer wall portions 152 is provided as a portion of the magnetic flux generated in the radially outer side of the bundle primary coil 61. The protruding portion 153 is provided as a portion of the magnetic flux generated at the radial center side of the bundle primary coil 61. The EI type magnetic core 150B of the secondary side power receiving device 70 has substantially the same structure as the EI type magnetic core 150A of the primary side power transmitting device 6A except for the difference in the structure of the protruding portion. That is, the EI type magnetic core 15A has a solid portion 155 having no hole formed in place of the protruding portion 153. According to the fourth embodiment, in addition to the advantages of (1) of the first embodiment, the advantages of the influence of the magnetic flux on the inductor can be reduced, and the same as (2) to (6), (11) In addition to the advantages of (13), the following advantages (16) can be obtained. (16) In the contactless power supply device 1, the EI type magnetic core 15A includes a rectangular outer wall portion 152 located on the outer circumference of the primary coil 61, and a protruding portion 153 disposed in the circular space batch of the primary one. According to this configuration, since the second portion 153 is provided on the center side of the primary coil 61 having a high magnetic flux density, the magnetic flux transmission efficiency of the primary coil 61 to the secondary coil 71 can be improved.

S 22 201223063 (Fifth Embodiment) A fifth embodiment of the present invention will be described with reference to Fig. 12 . The contactless power supply device 1 of the fifth embodiment is configured by changing a part of the contactless power supply device 1 of the first embodiment as follows. As described above, the non-contact power supply device 1 of the first embodiment is based on the ratio of the temperature of the casing top wall 62 (predicted temperature τ) detected by the thermistor 63 to the reference temperature TX, and the control is once for The power supply of the coil L1. On the other hand, the contactless power supply device 1 of the fifth embodiment is based on the temperature of the case top wall 62 detected by the thermistor 63 and the circuit board of the primary side power transmission device 60 detected by the thermistor 64. As a result of the comparison of the temperatures, the power supply to the primary coil L1 is controlled. The details of this change section are shown below. In the other points, the same components as those in the first embodiment are employed. Therefore, the same reference numerals are given to the same reference numerals, and a part or the whole of the description will be appropriately omitted. As shown in Fig. 12, the primary side power transmitting device 60 is provided with a thermal resistor 64 and a fixed resistor R6 as elements for detecting the temperature of the circuit substrate. The control circuit 33 inputs a voltage VS1 (hereinafter simply referred to as "first voltage VS1")' applied to the thermistor 63 and a voltage VS2 applied to the thermistor 64 (hereinafter simply referred to as "second voltage VS2"). The control circuit 33 calculates the temperature of the thermistor 63 as the estimated temperature T based on the first voltage vsi. Further, the control circuit 33 calculates the temperature of the thermistor 64 as the substrate estimated temperature TB based on the second voltage VS2. The control circuit 33 determines that the difference between the estimated temperature T and the estimated board temperature TB is the base 23 201223063. The quasi-temperature difference τ ζ or more 中断 interrupts the power supply to the primary coil L1 to turn off and off the switching elements F1 to F4 of the respective switching elements. The switching of this is because the charging of the secondary battery 15 is interrupted because the primary coil L1 does not induce alternating power. On the other hand, the control circuit 33 estimates that the difference between the estimated temperature TB of the substrate is less than the reference temperature difference τζ^, and the power supply to the coil L1 is continued. In the case of 'human and normal state, the change in the ambient temperature (ambient temperature) between the msl and the second voltage VS2 shows the same tendency to change. That is, in the normal state, the difference between the first voltage VS1 and the second power M VS2 is slightly smaller than the predetermined size. In the abnormal state, the first voltage VS1 changes in accordance with the temperature rise of the top wall & On the other hand, since the thermistor 64 is disposed at a portion away from the top wall 62 of the casing, the change in the second voltage vs2 of the temperature rise of the casing top wall 62 is different from the temperature rise of the casing top wall 62. The first electric 璧 VS1 changes tendency. Basically, the first electric VSH is increased corresponding to the temperature rise of the top wall 62 of the casing, but on the other hand, the second voltage VS2 tends to be substantially unchanged. Therefore, the determination of which of the abnormal state and the normal state of the state of the contactless power supply device 1 can be determined based on the difference between the first voltage VS1 and the second voltage VS2, that is, the difference between the estimated temperature τ and the substrate estimated temperature tb. On the other hand, the control circuit 33 controls the supply of electric power to the primary coil L1 based on the difference between the estimated temperature τ and the substrate push and the J degree 如上 as described above. According to the fifth embodiment, the advantage of (1) of the first embodiment can be obtained, thereby reducing the influence of the magnetic flux on the inductor, and

S 24 201223063 is subject to the advantages of (2) ~ (13). (Other Embodiments) Further, the embodiment of the present invention is not limited to the aspects exemplified in the above embodiments, and may be implemented as described below. Further, the following variations can be applied not only to the above-described respective embodiments, but also to different combinations of the examples. In the first embodiment described above, the secondary side thickness HD is set to be smaller than the protrusion height HA and the bottom wall portion thickness HB, but the secondary side thickness HD may be set to be larger than the protrusion height HA and the thickness of the bottom wall portion. At least one of them. Even in such a case, when the primary side thickness Hc is larger than the secondary side thick product HD, the advantage of the first embodiment (?) can be obtained. Further, in the above-described first embodiment, the secondary side thickness HD is set to be smaller than the primary side thickness HC, but the secondary side thickness HD may be set to be larger than the primary side thickness. In this case, in addition to the advantage of (7) of the first embodiment, the same advantages as the same embodiment can be obtained. In the above-described first embodiment, the circular hole (1) is provided in the protruding portion 113, but the shape of the hole 114 is not limited to a circular shape. In Example #, a hole can also be formed instead of a circular hole. In the consistent mode of the upper cover, the J-pole is magnetized; the protrusion corresponding portion 121 of the S 120 is provided with a protrusion protruding toward the secondary side. In the first embodiment described above, the control circuit 33 calculates the estimated temperature T of the top wall 2 of the casing based on the comparison of the estimated temperature τ with the reference temperature τ = = '. The power supply to the _L1 is controlled, but it may be 25 201223063. When the voltage applied to the thermistor 63 is equal to or higher than the reference voltage, that is, when the power supply device 1 is in an abnormal state, the control circuit 33 is The power supply to/from the coil L1 is interrupted. On the other hand, when the electric power applied to the thermistor 63 is not full of the reference voltage, that is, when the non-contact power supply device 1 is in the normal state, the control circuit 33 continues the supply of electric power to the primary coil L1. In the fifth embodiment described above, the control circuit 33 calculates the temperature of the circuit 62 and the temperature of the circuit board, and based on the comparison result, controls the power supply to the primary coil L1, but may be changed as follows. That is, the first voltage VS1 and the second voltage VS2 are supplied to a separately provided comparator different from the control circuit 33. When the difference between the second voltage VS1 and the second voltage VS2 is equal to or greater than the determination value, the comparator outputs a voltage V when the abnormality is output to the control circuit 33. On the other hand, when the difference between the first voltage vS1 and the second voltage VS2 is less than the determination value, the normal circuit output voltage vp having a value larger than the abnormal output voltage Vc is output to the (four) circuit 33. The control circuit 33 is connected to the secondary coil L1 (four) force supply when the output voltage of the comparator is the abnormal spike output voltage VC, i.e., when the contactless power supply device is in an abnormal state. On the other hand, when the output of the comparison is the normal output voltage VD, that is, the contactless power supply device is in the normal state, the control circuit 33 continues the power supply to the primary coil L1. In the above embodiments, the type ' of the second core of the primary power transmitting device' can be changed as follows. That is to say, any one of the cans can be replaced by any one of a can-shaped magnetic HO, EER, a magnetic core, an EE core 14A, an m-type magnetic core, a 豇-type magnetic::: two and an ETD core. When the first magnetic probe of the state is an EF type core or an ETD type core,

The first core of the S 26 201223063 state is identically provided with a hole for arranging the inductor at the protrusion. Each of the magnetic cores exemplified above may be exemplified by a magnetic core as the first magnetic core, and a magnetic core of another shape may be provided as the first magnetic core. As long as it is a magnetic core having a protruding portion, and a magnetic core for arranging a hole of the inductor is formed at the protruding portion, the shape as the first magnetic core can be appropriately changed. In the above embodiments, the type of the second core of the secondary power receiving device 70 can be changed as follows. That is, any one of the can core 110, the flat core 120, the EER core 130A, the EE core 140A, the EI core 150A, the EF core, and the ETD core can be used instead. A second magnetic core of each embodiment. Further, when the can core 110 is used, a hole in which the protruding portion is omitted can be used. Further, any of the EER type magnetic core 130B, the EE type magnetic core 140B, and the EI type magnetic core 150B may be employed. Further, in the case of using an EF type magnetic core or an ETD type magnetic core, a hole for arranging the inductor can be provided in the protruding portion in the same manner as the first magnetic core. The magnetic anger of the above examples may be exemplified by a magnetic core as a second magnetic core, and a magnetic core of another shape may be provided as a second magnetic core. As long as the inductor is provided only in the primary power transmitting device 60, the shape of the second core can be appropriately changed. Further, in the configuration in which the secondary side power receiving device 70 is provided with an inductor, if it is a magnetic core having a protruding portion and a magnetic core for arranging a hole of the inductor is formed in the protruding portion, the second magnetic body can be appropriately changed. The shape of the core. In the second to fourth embodiments described above, in addition to the holes not formed in the protruding portions, the primary-side power transmitting device 60 and the secondary-side power receiving device 70 are provided with the same shape of the magnetic core, respectively, except for the presence or absence of the holes. In addition, magnetic cores having different shapes may be provided for each device. In the second to fourth embodiments, when the flat-side magnetic core 120 is provided in the secondary power receiving device 70, since the primary side thickness HC is larger than the secondary side thickness Hd, the first implementation can be obtained. The effect of the advantage of type (7). In each of the above embodiments, the primary side power transmitting device 60 is provided with a thermal resistor 63'. Alternatively, or in addition, the secondary side power receiving device 7 may be provided with a thermal resistor 63. At this time, the secondary secondary power receiving device 7〇 The magnetic core is preferably a protrusion. For example, it is preferable to use any of the can core 110, the EER core 130A, the EE core i4A, and the EI core 150A. At this time, the thermal resistor is provided in the hole of the protruding portion, whereby the thermal resistor 63 provided in the secondary power receiving device 70 can obtain the advantages similar to those of the above embodiments. In the above embodiments, the configuration of the contactless power supply device 1 including the thermal resistor 63 as a sensor for detecting a change in state is exemplified, but other inductors may be provided instead of or in addition to the thermal resistor 63. The following examples (A) and (B) show an example of such a case. (A) A Hall element for detecting a magnetic flux is provided in the primary side power transmitting device 6''. Further, a magnet is disposed at a position corresponding to the Hall element in the secondary side power receiving device 7A. According to this configuration, the output voltage of the Hall element changes in accordance with the magnetic flux of the magnet. Accordingly, the primary side power transmitting device 60 can detect whether or not the electric toothbrush 1 is placed on the charging device 2A based on the output voltage of the Hall element. At this time, the control circuit 33 can appropriately control the start and end of charging of the electric toothbrush 10 by the following control. The control circuit 33 is configured to determine that the output voltage of the Hall element is greater than the determination

When the value of S 28 201223063 is predicted, that is, when the electric toothbrush 10 is placed on the charging device 2, charging of the secondary battery 15 by the power transmission unit 50 is started. On the other hand, when the control circuit 33 determines that the output voltage of the Hall element is equal to or less than the determination value, that is, when the electric toothbrush 1 is not detected on the charging device 2, the control circuit 33 stops the operation of the secondary battery cartridge 5 by the power transmission unit 50. Charging. (B) A primary side photodiode as a light receiving element is provided on the primary side power transmitting device 6''. Further, a secondary side photodiode as a light-emitting π piece is provided on the secondary side power receiving device 7A. According to this configuration, the output voltage of the primary side photodiode changes in accordance with the received light 1 of the light from the secondary side photodiode. Accordingly, the primary side power transmitting device 60 can detect whether the electric toothbrush 10 is placed on the charging device 2 based on the output voltage of the primary side photodiode. At this time, the control circuit 33 can be appropriately controlled by the following control. The time at which the electric toothbrush 10 starts and ends charging. When the control circuit 33 determines that the output voltage of the primary side photodiode is larger than the determination value, that is, when the electric toothbrush 10 is predicted to be placed on the charging device 20, the charging of the secondary battery 15 by the power transmission unit 50 is started. When the other control circuit 33 determines that the output voltage of the primary side photodiode is equal to or lower than the fixed value, that is, when the electric toothbrush 10 is not predicted to be charged on the charging device 20, the charging of the secondary battery 15 by the power transmission unit 50 is stopped. . In the above embodiments, the full-bridge circuit 31 employs a circuit including the switching elements p 1 to Μ , but the configuration of the full-bridge circuit μ is not limited thereto. As long as the alternating power can be induced in the primary coil L1 of the resonant circuit 32, a full bridge circuit in which the elements F1 to F4 are omitted may be used, for example. • Each of the above embodiments adopts a resonant circuit 32 of each embodiment in which 32 ’ is disposed at an intermediate point of the full-bridge circuit 31 including the switching elements F1 to 29 201223063 F4. The resonant circuit including the secondary coil L1 may be replaced by another circuit configuration. The above embodiments use field effect transistors as switching elements (4) to F4, but are not limited to field effects if they are switching elements capable of generating alternating power. Crystals can also be used with other components. The above embodiments are exemplified by the non-contact power supply device 1 including the electric toothbrush 1 and the charging device 2, but the non-contact power supply device including the other electric device and the charging device may be used. The sample is concrete. Other electric devices include, for example, mobile phones, wireless telephones, electric knives, watches, notebook computers, and the like. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a non-contact power supply device according to a first embodiment of the present invention, schematically showing an electric toothbrush and a charging device constituting the same device. Fig. 2 is a cross-sectional view showing a cross-sectional structure of a power transmission portion of the contactless power supply device of the same embodiment. _ Figure 3 is a non-contact power supply device of the same embodiment, (a) is a plan view showing the planar structure of the can core, and (b) is a profile of the can core along the A3-8 axis. A cross-sectional view of the structure. Fig. 4 is a plan view showing a planar configuration of a primary coil and a primary coil, relating to the non-contact power supply device of the same embodiment. Fig. 5 is a circuit diagram showing a configuration of a primary side circuit and a secondary side circuit in the non-contact power supply device of the same embodiment.

S 30 201223063 Fig. 6 is a cross-sectional view showing a cross-sectional structure of a power transmission portion of a contactless power supply device according to a second embodiment of the present invention. Fig. 7 is a plan view showing a planar structure of an EER type magnetic core, and (b) is a sectional view showing a sectional structure of an EER type magnetic core taken along line - A7, relating to the non-contact power supply device of the same embodiment. . Fig. 8 is a cross-sectional view showing a cross-sectional structure of a power transmission portion of a contactless power supply device according to a third embodiment of the present invention. Fig. 9 is a plan view showing a planar structure of a non-EE type magnetic core in the non-contact power supply device of the same embodiment, and (b) is a cross-sectional view showing a cross-sectional structure of an EE type magnetic core taken along line A9. BRIEF DESCRIPTION OF THE DRAWINGS A non-contact power supply device according to a fourth embodiment of the present invention is a cross-sectional view showing a cross-sectional structure of a power transmission portion. Fig. 11 is a plan view showing a planar structure of an EI type magnetic core, and Fig. 11 is a sectional view showing a sectional structure of an El type magnetic core along the All-All line, in a non-contact power supply device of the same embodiment. Figure. Fig. 12 is a circuit diagram showing a configuration of a primary side circuit in a non-contact power supply device according to a fifth embodiment of the present invention. [Main component symbol description] 10 12 14 20 Electric toothbrush display section. Toothbrush housing charging device primary side circuit 1: Non-contact power supply device 11: Grip portion 13: Cleaning portion 15: Secondary battery 2 1 : Right-handed βΑ η 31 201223063 31 : Full-bridge circuit 32 : Resonance circuit 33 : Control circuit 40 : Secondary side circuit 41 : Full-wave rectification circuit 42 : DC / DC converter 50 : Power transmission unit 60 : - Secondary side power transmission device 61 : - times Coil 61A: end portion 61B: end portion 61C: circular space 62: housing top wall 63: thermistor 64: thermistor 70: secondary side power receiving device 71: secondary coil 72: housing top wall 110: Pot core 111: bottom wall portion 111A: bottom surface 111B: top surface 112: outer peripheral portion 113: protruding portion 113A: base end portion 113B: front end portion 114: hole 120: flat plate type magnetic anger 121: protrusion corresponding portion 121A: The bottom surface 121B: the top surface 130A: the EER type magnetic core 130B: the EER type magnetic core 131: the bottom wall portion 132: the outer wall portion 133: the protruding portion 134: the hole 135: the protruding portion 140A: the EE type magnetic core 140B: the EE type magnetic core 141 : bottom wall portion 142 : outer wall portion 143 : protruding portion 144 : hole 145 : protruding portion 150A : EI type magnetic core 150B : EI type magnetic core 151 : bottom wall portion s 32 201223063 152 : 154 : outer wall portion 153 : protruding portion hole 155 : protruding portion 33

Claims (1)

201223063 VII. Patent application scope: 1. A non-contact power supply device, comprising: a primary side power transmission device, comprising a primary coil for receiving alternating magnetic flux by receiving power supply; and a secondary side power receiving device comprising receiving the first primary coil a secondary coil that generates an induced current by alternating magnetic flux; and an inductor for detecting a change in state, wherein the non-contact power supply device is provided with: a first magnetic wave corresponding to the primary coil and disposed on the primary side power transmitting device a core, and a second core disposed in the secondary power receiving device, wherein at least one of the first magnetic core and the second magnetic core is provided with a protruding portion, the protruding portion having the aforementioned one A hole extending in a direction in which the coil and the secondary coil are arranged, and the inductor is provided in the hole. 2. The contactless power supply device according to claim 1, wherein the first protruding portion of the first magnetic portion is provided in a space of a central portion of the primary coil. 3. The non-contact power supply device according to claim 2, wherein a thickness of a portion of the first magnetic core in which the protruding portion is provided is defined as a primary side thickness, and the second magnetic core corresponds to When the thickness of the portion of the protruding portion of the first magnetic core is set to the thickness of the secondary side, the thickness of the secondary side S 34 201223063 is smaller than the thickness of the primary side. 4. The non-contact power supply device j according to claim 2, wherein the protruding portion of the first magnetic core has a cylindrical shape, and the hole is provided in a central portion in a radial direction of the protruding portion. . The non-contact device according to any one of the items 1 to 3, wherein the primary coil and the secondary coil are formed in a circular shape. The non-contact power supply device of claim 5, wherein at least the magnetic core of the first magnetic core and the second magnetic core is a can core, and the can core is included. a two-column outer peripheral portion that surrounds an outer circumference of the corresponding coil; an extra large portion 'disposed in the middle of the corresponding coil; and a = portion ' is disposed on the opposite side of the other coil from the corresponding coil, The outer peripheral portion and the aforementioned protruding portion are in contact with each other. The non-contact power supply device according to Item 1 of the DHt, wherein the protruding portion is provided in the sensor of the hole in the center of the protruding portion, and the sensor detects the one of the e 35 201223063 Temperature of the secondary side power transmission unit. 9. The contactless power supply device according to claim 1, wherein the protruding portion of the first magnetic core is disposed in a space of a central portion of the primary coil, and the sensing of the hole provided in the protruding portion The device detects a change in state of the secondary side power receiving device. S 36