Energy harvester, electronic apparatus comprising energy harvester, and operation method and recording medium therefor

Abstract

This energy harvester may comprise: a magnet core configured to surround a power line that carries an alternating current or to have the power line wound around the magnet core; at least one coil wound around the magnet core; and at least one capacitor configured to compensate for an inductance generated in the at least one coil. The at least one coil and the at least one capacitor may be configured to form at least one resonance point corresponding to at least one harmonic frequency of a fundamental frequency of the alternating current flowing through the power line. The energy harvester may be configured to harvest power on the basis of a noise corresponding to the at least one harmonic frequency. Various other embodiments are also possible.

Description

Energy harvester, electronic device including energy harvester, method of operation thereof, and recording medium

[0001] The present disclosure relates to an energy harvester according to one embodiment, an electronic device including the energy harvester, a method of operation thereof, and a recording medium.

[0002] Conventional technology has been proposed as a structure for harvesting power from transmission lines. Since transmission lines utilize low frequencies (e.g., 50–60 Hz), the harvesting efficiency is low; consequently, to obtain the required power, a structure applicable only to power lines transmitting high power is adopted. In the low-frequency band, a large amount of capacitor is required to match the frequency resonance. Consequently, using a resonant structure leads to a limit in volume, so a structure with high impedance is designed without a resonant structure, resulting in a problem where the harvested capacity is reduced. Therefore, harvesting is performed using the fundamental component rather than the multiplier component, and as a large amount of power is harvested, the power capacity transmitted through the power line decreases, which can lead to a deterioration in power quality.

[0003] The information described above may be provided as related art for the purpose of aiding understanding of the present disclosure. No claim or determination is made as to whether any of the foregoing may be applied as prior art related to the present disclosure.

[0004] According to one embodiment, an energy harvester may include a magnet core configured to wrap around a power line carrying an alternating current or to wind said power line, at least one coil wound around said magnet core, and at least one capacitor configured to compensate for an inductance generated in said at least one coil. The at least one coil and said at least one capacitor may be configured to form at least one resonance point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in said power line. The energy harvester may be configured to harvest power based on noise corresponding to said at least one harmonic frequency.

[0005] According to one embodiment, a method of operating an energy harvester may include an operation of forming at least one resonance point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line by using a magnet core configured to wrap around a power line through which an alternating current flows or to wind said power line, at least one coil wound around said magnet core, and at least one capacitor configured to compensate for the inductance generated in said at least one coil. The method may include an operation of harvesting power based on noise corresponding to said at least one harmonic frequency.

[0006] According to one embodiment, in a non-transitory computer-readable recording medium for storing instructions, the instructions may cause the electronic device to perform at least one operation when executed individually or collectively by at least one processor of the electronic device. The at least one operation may include an operation of converting alternating current power provided by a power source into direct current power using a rectifier. The at least one operation may include an operation of providing alternating current by performing a switching operation on the direct current power using a switching circuit. The at least one operation may include an operation of forming at least one resonance point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line using a magnet core configured to wrap around or wind the power line of the alternating current, at least one coil wound around the magnet core, and at least one capacitor configured to compensate for the inductance generated in the at least one coil. The above at least one operation may include an operation of harvesting power based on noise corresponding to the at least one harmonic frequency.

[0007] FIG. 1 is a block diagram of an energy harvester according to one embodiment.

[0008] FIG. 2 is a drawing illustrating an energy harvester according to one embodiment.

[0009] FIG. 3 is a diagram illustrating the resonance point of an energy harvester according to one embodiment.

[0010] FIG. 4 is a diagram illustrating multiple resonances of an energy harvester according to one embodiment.

[0011] FIG. 5 is a diagram illustrating a plurality of resonance points of an energy harvester according to one embodiment.

[0012] FIG. 6 is a drawing illustrating an energy harvester according to one embodiment.

[0013] FIG. 7 is a drawing illustrating an electronic device including or equipped with an energy harvester according to one embodiment.

[0014] FIG. 8 is a drawing illustrating an electronic device according to one embodiment.

[0015] FIG. 9 is a diagram illustrating the principle of an energy harvester according to one embodiment.

[0016] FIG. 10 is a diagram illustrating a circuit diagram according to one embodiment.

[0017] FIG. 11 is a drawing illustrating an energy harvester according to one embodiment.

[0018] FIG. 12 is a diagram illustrating the saturation of a magnet core according to one embodiment.

[0019] FIG. 13 is a drawing illustrating an energy harvester according to one embodiment.

[0020] The operations of an energy harvester (100) or an electronic device (e.g., 700 of FIG. 7) can be described in detail with reference to the embodiments described below (e.g., embodiments of FIG. 1 to 10). Each embodiment is disclosed in a separate drawing and a separate paragraph, but this is for convenience of explanation only, and at least some of the embodiments described below and at least some of the embodiments described below may be applied together. At least some of the embodiments described above and at least some of the embodiments described below may be omitted.

[0021] In this document, when an energy harvester (100) or an electronic device (e.g., 700 in FIG. 7) performs a specific operation, it may mean that a processor, such as a micro-controlling unit (MCU), a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), a microprocessor, or an application processor (AP), performs a specific operation. According to one embodiment, the processor may include a processing circuit. When an energy harvester (100) or an electronic device (e.g., 700 in FIG. 7) performs a specific operation, it may mean that the processor controls other hardware to perform a specific operation. The energy harvester (100) or electronic device (e.g., 700 in FIG. 7) performing a specific operation may mean that a processor or other hardware is caused to perform a specific operation as at least one instruction for performing a specific operation, which was stored in the storage circuit (e.g., memory) of the energy harvester (100) or electronic device (e.g., 700 in FIG. 7), is executed. At least one instruction stored in the memory of the energy harvester (100) or electronic device (e.g., 700 in FIG. 7) may cause the electronic device (101) to perform at least one operation, either individually or collectively, when executed by the processor.

[0022] FIG. 1 is a block diagram of an energy harvester according to one embodiment.

[0023] According to one embodiment, the energy harvester (100) of FIG. 1 may be configured to harvest power based on an alternating current flowing through a power line (190) (e.g., power line (790) of FIG. 7). An electronic device (e.g., 700 of FIG. 7) may generate a desired power (e.g., voltage and / or current) using a power conversion circuit (e.g., rectifier (820) and switching circuit (830) of FIG. 8). To generate the desired power (e.g., voltage and / or current), the electronic device (e.g., 700 of FIG. 7) may perform a switching operation through a switching circuit (e.g., 830 of FIG. 8), wherein the frequency of the switching circuit (e.g., 830 of FIG. 8) may be fixed at a fundamental frequency. While power is being converted based on the fundamental frequency of a switching circuit (e.g., 830 in FIG. 8) in an electronic device (e.g., 700 in FIG. 7), noise (e.g., electromagnetic noise) corresponding to a multiple frequency (e.g., harmonic frequency) of the fundamental frequency of the alternating current may be generated based on the alternating current provided by the switching circuit (e.g., 830 in FIG. 8). According to one embodiment, the energy harvester (100) of FIG. 1 may be configured to harvest power based on noise (e.g., electromagnetic noise) corresponding to a multiple frequency (e.g., harmonic frequency) of the fundamental frequency of the alternating current flowing in a power line (190) (e.g., power line (790) in FIG. 7).

[0024] According to one embodiment, the energy harvester (100) of FIG. 1 may include a magnet core (110), a coil (120), a capacitor (130), and a power conversion circuit (140).

[0025] According to one embodiment, the magnet core (110) may be configured to wrap around a power line (190) (e.g., power line (790) of FIG. 7) through which alternating current flows, or to have the power line (190) (e.g., power line (790) of FIG. 7) wound around it. For example, referring to FIG. 2 described later, the magnet core (110) may be configured to wrap around the power line (190). For example, referring to FIG. 8 described later, the power line (790) may be wound around the magnet core (110). As long as the power line (190) (e.g., power line (790) of FIG. 7) is a power line through which alternating current flows, there are no restrictions on its type or configuration. For example, a portion of the power line (190, 790) may be included in the energy harvester (100). The magnet core (110) can be configured to form a path for the magnetic field generated by an alternating current flowing through a power line (190) (e.g., power line (790) of FIG. 7).

[0026] According to one embodiment, the coil (120) may include at least one coil (e.g., one coil or a plurality of coils (e.g., 421, 422 of FIG. 4 or 621, 622, 623, 629 of FIG. 6)). At least one coil (120) may be configured to be wound on a magnet core (110). For example, referring to FIG. 2, one coil (120) may be wound on the magnet core (110). For example, referring to FIG. 4, a plurality of coils (421, 422) may be wound on the magnet core (110). In FIG. 8, for convenience of explanation, one coil (120) is shown wound on the magnet core (110), but this is merely an example, and a plurality of coils (120) may be wound on the magnet core (110) of FIG. 8. At least one coil (120) wound on a magnet core (110) may be configured to form at least one resonance point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (190) (e.g., power line (790) of FIG. 7), and this will be described later.

[0027] According to one embodiment, the capacitor (130) may include at least one capacitor (e.g., one capacitor or a plurality of capacitors (e.g., 431, 432 of FIG. 4 or 631, 632, 633, 639 of FIG. 6)). The at least one capacitor (130) may be configured to compensate for the inductance generated in at least one coil (120). The at least one coil (120) and the at least one capacitor (130) may be configured to form at least one resonance point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (190) (e.g., power line (790) of FIG. 7). According to one embodiment, with reference to FIG. 2, the energy harvester (100) may include one capacitor (130). Although capacitors are not shown in FIG. 2(a), this is for convenience of explanation, and capacitors (e.g., 130 in FIG. 2(b)) may be connected to the coil (120) in FIG. 2(a). According to one embodiment, referring to FIG. 4, the energy harvester (100) may include a plurality of capacitors (431, 432). Although capacitors are not shown in FIG. 4(a), this is for convenience of explanation, and capacitors (e.g., 431, 432 in FIG. 4(b)) may be connected to the coils (421, 422) in FIG. 4(a). In FIG. 8, capacitors are not shown for convenience of explanation, but according to one embodiment, at least one capacitor (130) may be connected to at least one coil (120) of the energy harvester (100) in FIG. 8.

[0028] According to one embodiment, the power conversion circuit (140) of the energy harvester (100) may include a rectifier that rectifies alternating current power into direct current power and / or a converter that converts direct current power into direct current power. The power conversion circuit (140) may convert the harvested power based on noise corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (190) (e.g., power line (790) of FIG. 7).

[0029] According to one embodiment, power harvested from an energy harvester (100) may be delivered to a load (150) of FIG. 1. The load (150) may be included in the energy harvester (100) or may exist outside the energy harvester (100). For example, referring to FIG. 7, power harvested from the energy harvester (100) may be delivered to a load (750) of an electronic device (700). The load (150) (e.g., the load (750) of FIG. 7) may include a sensor, a battery, a coil, and / or a power circuit as a component receiving power, and there are no limitations on the type and configuration of the load (150) (e.g., the load (750) of FIG. 7). For example, if the energy harvester (100) includes a load (150), the load (150) may be any component included in the energy harvester (100). For example, if an electronic device (e.g., 700 in FIG. 7) includes a load (150) (e.g., load (750)), the load (150) (e.g., load (750)) can be any configuration included in the electronic device (e.g., 700 in FIG. 7).

[0030] FIG. 2 is a diagram illustrating an energy harvester according to one embodiment. FIG. 3 is a diagram illustrating a resonance point of an energy harvester according to one embodiment.

[0031] Referring to FIGS. 2 and FIGS. 3, the resonance point can be described when the energy harvester (100) includes one coil (120).

[0032] Referring to FIG. 2(a), according to one embodiment, an energy harvester (100) may include a magnet core (110) that wraps around a power line (190), a coil (120) wound around the magnet core (110), and a capacitor (130) configured to compensate for the inductance generated in the coil (120). As previously mentioned, a capacitor is not shown in FIG. 2(a), but for convenience of explanation, a capacitor (e.g., 130 in FIG. 2(b)) may be connected to the coil (120) in FIG. 2(a). For example, a capacitor (130) may be connected to point B of the coil (120). FIG. 2(b) is a circuit diagram corresponding to FIG. 2(a). In FIG. 2, for convenience of explanation, a power conversion circuit (140) is omitted. Referring to FIG. 2(b), the first end of the coil (120) can be electrically connected to the first end of the load (150). The second end of the coil (120) can be connected to the first end of the capacitor (130). The second end of the capacitor (130) can be electrically connected to the second end of the load (150).

[0033] Referring to FIG. 3, according to one embodiment, the coil (120) and capacitor (130) of FIG. 2 have a harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (190) (e.g., f of FIG. 3). H It can be configured to form a resonance point corresponding to ). For example, the coil (120) and the capacitor (130) can be configured to form an LC resonant circuit that forms a resonance point at the harmonic frequency of the fundamental frequency (e.g., second harmonic frequency). For example, the coil (120) and the capacitor (130) have a local minimum impedance at the resonance point corresponding to the harmonic frequency of the fundamental frequency (e.g., second harmonic frequency) (e.g., f in FIG. 3). HIt can be configured to form an LC resonant circuit configured to operate so that power corresponding to ) is delivered to the load (150). Local minimum impedance may be a minimum impedance at a frequency near the corresponding frequency.

[0034] FIG. 4 is a diagram illustrating multiple resonances of an energy harvester according to one embodiment. FIG. 5 is a diagram illustrating a plurality of resonance points of an energy harvester according to one embodiment.

[0035] Referring to FIGS. 4 and FIGS. 5, multiple resonance points can be described in the case where the energy harvester (100) includes multiple coils (120) (e.g., 421, 422 in FIG. 4).

[0036] Referring to FIG. 4(a), according to one embodiment, an energy harvester (100) may include a magnet core (110) that wraps around a power line (190), a plurality of coils (421, 422) wound around the magnet core (110), and a plurality of capacitors (431, 432) configured to compensate for inductance generated in the plurality of coils (421, 422). As previously mentioned, capacitors are not shown in FIG. 4(a), but for convenience of explanation, capacitors (e.g., 431, 432 in FIG. 4(b)) may be connected to the coils (421, 422) of FIG. 4(a). FIG. 4(b-1) and (b-2) are circuit diagrams corresponding to FIG. 4(a). In FIG. 4, for convenience of explanation, the power conversion circuit (140) is omitted. Referring to FIG. 4 (b-1), the first coil (421), the first capacitor (431), the second coil (422), and the second capacitor (432) can be connected in series. For example, in FIG. 4 (b-1), the first terminal of the first coil (421) can be electrically connected to the first terminal of the load (150). In FIG. 4 (b-1), the second terminal of the first coil (421) can be connected to the first terminal of the first capacitor (130). In FIG. 4 (b-1), the second terminal of the first capacitor (130) can be connected to the first terminal of the second coil (422). In FIG. 4 (b-1), the second terminal of the second coil (422) can be connected to the first terminal of the second capacitor (432). In FIG. 4 (b-1), the second terminal of the second capacitor (432) may be electrically connected to the second terminal of the load (150). Referring to FIG. 4 (b-2), the capacitors (e.g., 431, 432) may be connected in parallel to the coils (e.g., 421, 422). For example, in FIG. 4 (b-2), the first terminal of the first coil (421) may be electrically connected to the first terminal of the load (150). In FIG. 4 (b-2), the second terminal of the first coil (421) may be connected to the first terminal of the first capacitor (130).In FIG. 4 (b-2), the second terminal of the first capacitor (130) can be electrically connected to the load (150). In FIG. 4 (b-2), the first terminal of the second coil (422) can be connected to the first terminal of the first capacitor (130). In FIG. 4 (b-2), the second terminal of the second coil (422) can be connected to the first terminal of the second capacitor (432). In FIG. 4 (b-2), the second terminal of the second capacitor (432) can be electrically connected to the second terminal of the load (150). Accordingly, in FIG. 4 (b-2), the second coil (422) and the second capacitor (432) can be connected in parallel to the first capacitor (431).

[0037] Referring to FIG. 5, according to one embodiment, the plurality of coils (421, 422) and the plurality of capacitors (431, 432) of FIG. 4 have a plurality of harmonic frequencies of the fundamental frequency of the alternating current flowing in the power line (190) (e.g., f of FIG. 5). H2 and f H2 It can be configured to form a plurality of resonant points corresponding to ). For example, the first coil (421) and a plurality of capacitors (431, 432) can be configured to form a first LC resonant circuit that forms a first resonant point at a harmonic frequency of the fundamental frequency (e.g., second harmonic frequency). For example, the first coil (421) and a plurality of capacitors (431, 432) have a local minimum impedance at the first resonant point corresponding to the harmonic frequency of the fundamental frequency (e.g., second harmonic frequency), thereby the harmonic frequency (e.g., second harmonic frequency) (e.g., f in FIG. 5). H2It may be configured to form a first LC resonant circuit configured to operate such that a first power corresponding to ) is delivered to the load (150). For example, the second coil (422) and a plurality of capacitors (431, 432) may be configured to form a second LC resonant circuit that forms a second resonant point at a harmonic frequency of the fundamental frequency (e.g., third harmonic frequency). For example, the second coil (422) and a plurality of capacitors (431, 432) have a local minimum impedance at the second resonant point corresponding to a harmonic frequency of the fundamental frequency (e.g., third harmonic frequency), thereby the harmonic frequency (e.g., third harmonic frequency) (e.g., f in FIG. 5). H3 It may be configured to form a second LC resonant circuit configured to operate so that a second power corresponding to ) is delivered to the load (150). According to one embodiment, while a first power corresponding to a first resonant point of the first LC resonant circuit is delivered to the load (150), a second power corresponding to a second resonant point of the second LC resonant circuit may be delivered to the load (150).

[0038] There is no limit to the number of resonance points formed by the energy harvester (100). For example, with reference to FIG. 6, an energy harvester (100) forming three or more resonance points will be described.

[0039] FIG. 6 is a drawing illustrating an energy harvester according to one embodiment.

[0040] Referring to FIG. 6, according to one embodiment, the energy harvester (100) may be configured to form three or more resonance points. In FIG. 6, the energy harvester (100) may include three coils (e.g., 621, 622, 623). In FIG. 6, the energy harvester (100) may include three or more coils (e.g., 621, 622, and 623 to 629).

[0041] According to one embodiment, the energy harvester (100) may include resonance points corresponding to the number of coils at a plurality of harmonic frequencies of the fundamental frequency of the alternating current flowing in the power line (e.g., 190 in FIG. 1). For example, when the energy harvester (100) includes three coils (e.g., 621, 622, 623), the energy harvester (100) may include a first resonance point corresponding to the first coil (621), a second resonance point corresponding to the second coil (622), and a third resonance point corresponding to the third coil (623). For example, when the energy harvester (100) includes three coils (e.g., 621, 622, 623) and a plurality of capacitors (631, 632, 633), the first coil (621) and the plurality of capacitors (631, 632, 633) may be configured to form a first LC resonant circuit that operates to deliver a first power corresponding to the harmonic frequency (e.g., second harmonic frequency) to a load (e.g., 150 in FIG. 1) by having a local minimum impedance at a first resonant point corresponding to the harmonic frequency (e.g., second harmonic frequency) of the fundamental frequency of the alternating current flowing in the power line (e.g., 190 in FIG. 1). For example, when the energy harvester (100) includes three coils (e.g., 621, 622, 623) and a plurality of capacitors (631, 632, 633), the second coil (622) and the plurality of capacitors (631, 632, 633) may be configured to form a second LC resonant circuit that operates to deliver a second power corresponding to the harmonic frequency (e.g., third harmonic frequency) to a load (e.g., 150 in FIG. 1) by having a local minimum impedance at a second resonant point corresponding to the harmonic frequency (e.g., third harmonic frequency) of the fundamental frequency of the alternating current flowing in the power line (e.g., 190 in FIG. 1).For example, when the energy harvester (100) includes three coils (e.g., 621, 622, 623) and a plurality of capacitors (631, 632, 633), the third coil (623) and the plurality of capacitors (631, 632, 633) may be configured to form a third LC resonant circuit that operates to deliver a third power corresponding to the harmonic frequency (e.g., 4th harmonic frequency) to a load (e.g., 150 in FIG. 1) by having a local minimum impedance at a third resonant point corresponding to the harmonic frequency (e.g., 4th harmonic frequency) of the fundamental frequency of the alternating current flowing in the power line (e.g., 190 in FIG. 1). According to one embodiment, a first power corresponding to a first resonant point of a first LC resonant circuit, a second power corresponding to a second resonant point of a second LC resonant circuit, and a third power corresponding to a third resonant point of a third LC resonant circuit can be simultaneously delivered to a load (150). Referring to FIG. 6, according to one embodiment, by including an additional coil (e.g., a third coil (623)) and an additional capacitor (e.g., a third capacitor (633)) connected in parallel to an existing capacitor (e.g., a second capacitor (632)), the energy harvester (100) can form an additional resonant point. Referring to FIG. 6, according to one embodiment, there is no limit to the number of coils (or capacitors) included in the energy harvester (100), and it can be understood by referring to the above description that it includes four or more coils (e.g., 621, 622, 623, 629).

[0042] FIG. 7 is a drawing illustrating an electronic device including or equipped with an energy harvester according to one embodiment. FIG. 8 is a drawing illustrating an electronic device according to one embodiment.

[0043] Referring to FIGS. 7 and FIGS. 8, according to one embodiment, an electronic device (700) including an energy harvester (100) or equipped with an energy harvester (100) can be described.

[0044] According to one embodiment, the electronic device (700) may include an energy harvester (100). According to one embodiment, the energy harvester (100) may be mounted on the electronic device (700). For example, the energy harvester (100) may be detachable from the electronic device (700). The operation of the electronic device (700) may be described similarly in the embodiment in which the electronic device (700) includes the energy harvester (100) and in the embodiment in which the energy harvester (100) is mounted on the electronic device (700). For convenience of explanation, the embodiment in which the electronic device (700) includes the energy harvester (100) will be described, and the description of the embodiment in which the energy harvester (100) is mounted on the electronic device (700) will be omitted.

[0045] Referring to FIG. 7, the energy harvester (100) can harvest power based on an alternating current flowing through a power line (790) and provide the harvested power to a load (750). According to one embodiment, the power line (790) may be included in an electronic device (700) outside the energy harvester (100). A portion of the power line (790) may be included in the energy harvester (100). According to one embodiment, the load (750) may be included in an electronic device (700) outside the energy harvester (100). The load (750) may be included in the energy harvester (100). For example, if the electronic device (700) includes the load (750), the load (750) may be any configuration included in the electronic device (700). For example, if the energy harvester (100) includes a load (750), the load (750) can be any configuration included in the energy harvester (100).

[0046] Referring to FIG. 8, according to one embodiment, an energy harvester (100) may include a magnet core (110) configured to wrap around a power line (790) or to wind the power line (790), at least one coil (120) wound around the magnet core (110), and at least one capacitor (e.g., 130 of FIG. 1) configured to compensate for the inductance generated in the at least one coil (120). In FIG. 8, which is described below, the capacitor (e.g., 130 of FIG. 1) of the energy harvester (100) is not shown, but for convenience of explanation, at least one capacitor (e.g., 130 of FIG. 1) may be connected to the at least one coil (120) of FIG. 8. In FIG. 8 described below, the energy harvester (100) is shown as comprising a single coil (120), but for convenience of explanation, the coil (120) in FIG. 8 may comprise a plurality of coils (e.g., 421, 422 of FIG. 4 or 621, 622, 623, 629 of FIG. 6).

[0047] Referring to FIG. 8, according to one embodiment, the electronic device (700) may include a power source (810), a rectifier (820), and a switching circuit (830). According to one embodiment, the electronic device (700) may be a home appliance including an induction cooker, a refrigerator, a fan, and a TV, or a computing device including a smartphone, a tablet, and a laptop computer, and there is no limitation on the type of electronic device (700). For example, the electronic device (700) may be an induction cooker for transferring energy to an external device, in which case the electronic device (700) may include a transmitting coil (840) for transmitting power. It is obvious that the electronic device (700) may include a transmitting coil (e.g., 840) even if it is not an induction cooker. The electronic device (700) may convert alternating current power provided from the power source (810) into direct current power using the rectifier (820). The electronic device (700) can provide alternating current by performing a switching operation on the direct current power provided by the rectifier (820) using the switching circuit (830). The alternating current provided by the switching circuit (830) can be transmitted to the transmitting coil (840). The electronic device (700) can transmit energy to an external device using the transmitting coil (840) based on the alternating current provided by the switching circuit (830).

[0048] According to one embodiment, in FIG. 8, the electronic device (700) may include a power line (850) which is a path through which an alternating current emitted from a switching circuit (830) flows. For example, the alternating current emitted from the switching circuit (830) may be transmitted to a transmitting coil (840) through the power line (850). According to one embodiment, a power line (790) derived from the power line (850) of the electronic device (700) may be wound on the magnet core (110) of the energy harvester (100). According to one embodiment, it is obvious that the magnet core (110) of the energy harvester (100) may be configured to wrap around the power line (850) of the electronic device (700) (or the power line (790) derived from the power line (850)). The power line (790) derived from the power line (850) may be included in the electronic device (700) or in the energy harvester (100).

[0049] The energy harvester (100) of FIGS. 2 to 6 may correspond to the energy harvester (100) included in the electronic device (100) of FIGS. 7 and 8. According to one embodiment, the energy harvester (100) may form at least one resonance point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (790). For example, the energy harvester (100) may form one resonance point corresponding to one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (790) by including one coil (120). For example, the energy harvester (100) may form a plurality of resonant points corresponding to a plurality of harmonic frequencies of the fundamental frequency of the alternating current flowing in the power line (790) by including a plurality of coils (120) (e.g., 421, 422 of FIG. 4, or 621, 622, 623, 629 of FIG. 6). According to one embodiment, the energy harvester (100) may be configured to deliver power of at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (790) to a load (750) by forming a local minimum impedance at at least one resonant point.

[0050] FIG. 9 is a diagram illustrating the principle of an energy harvester according to one embodiment.

[0051] The harvesting operation of an energy harvester (e.g., 100 in FIG. 1) can be explained based on Ampere's law, which states that a magnetic field is formed by a current; Faraday's law, which states that an electromotive force is induced by a change in the magnetic field; and Lenz's law, which states that the induced current flows in a direction that opposes the change in the magnetic field.

[0052] The circuit diagram of FIG. 9 may include a primary coil (e.g., L1 of FIG. 9) corresponding to a power line (e.g., 190 of FIG. 1, 790 of FIG. 7) and a secondary coil (e.g., L2 of FIG. 9) corresponding to a coil (e.g., 120 of FIG. 1) of an energy harvester (e.g., 100 of FIG. 1). In FIG. 9, i1 corresponds to an alternating current flowing through the power line (e.g., 190 of FIG. 1, 790 of FIG. 7), and i2 corresponds to an induced current (e.g., current of harvested power) flowing through the coil (e.g., 120 of FIG. 1) of the energy harvester (e.g., 100 of FIG. 1). In FIG. 9, the winding ratio a of the primary coil L1 and the secondary coil L2 may be N1 / N2. In FIG. 9, the voltage of the primary coil L1 may be V1 and the voltage of the secondary coil L2 may be V2. In FIG. 9, the coupling coefficient between the primary coil L1 and the secondary coil L2 may be k and the mutual inductance may be M. In FIG. 9, the fundamental frequency of the alternating current flowing through the primary coil L1 may be f. In FIG. 9, the angular velocity (e.g., angular frequency) of the alternating current flowing through the primary coil L1 may be w (e.g., 2*pi*f). The circuit diagram of FIG. 9 may satisfy the following mathematical equation.

[0053] (Mathematical Equation 1) |V2| = w*|M|*i1

[0054] (Mathematical Equation 2) |M| = |k|*root(L1*L2)

[0055] (Mathematical Equation 3) a = N1 / N2 = root(L1 / L2)

[0056] (Mathematical Equation 4) L2= a 2 *L1

[0057] According to one embodiment, in the circuit diagram of FIG. 9, V2 is the reference voltage V REF When it exceeds (e.g., 5[V]), harvesting operation can be performed in an energy harvester (e.g., 100 in FIG. 1). Since 0.7 < |k| < 1, consequently, the winding ratio a of the primary coil L1 and the secondary coil L2 in FIG. 9 is V REFIt must be configured to exceed / (w*L1*i1). Therefore, the energy harvester (e.g., 100 in FIG. 1) is configured to satisfy the description in FIG. 9 (e.g., the winding ratio a of the primary coil L1 and the secondary coil L2 is V REF It can be configured to exceed / (w*L1*i1).

[0058] FIG. 10 is a diagram illustrating a circuit diagram according to one embodiment.

[0059] According to one embodiment, in an energy harvester (e.g., 100 in FIG. 1), a circuit can be configured as shown in FIG. 10 by connecting multiple resonant structures of an inductor and a capacitor to create a desired number of resonant points. Accordingly, the energy harvester (e.g., 100 in FIG. 1) can be configured to form at least one resonant point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (e.g., 190 in FIG. 1), thereby being configured to harvest power based on noise corresponding to at least one harmonic frequency.

[0060] FIG. 11 is a drawing illustrating an energy harvester according to one embodiment. FIG. 12 is a drawing illustrating the saturation of a magnet core according to one embodiment. FIG. 13 is a drawing illustrating an energy harvester according to one embodiment.

[0061] Referring to FIGS. 11, 12, and 13, the operation of capturing a magnetic field by adjusting the degree of saturation of the magnet core (110) can be explained.

[0062] FIG. 11(a) may correspond to the energy harvester (100) of FIG. 4(a). FIG. 11(b) may be a circuit diagram of the energy harvester (100) or a circuit diagram of an electronic device (e.g., 700 of FIG. 7) including the energy harvester (100). Referring to FIG. 11(b), the energy harvester (100) may include a switch (1120) and a sensor (1110). The sensor (1110) may be configured to measure the magnitude of the current passing through a point of the harvester circuit (or the magnitude of the voltage at a point of the harvester circuit). The switch (1120) may be configured to adjust the turn ratio of the coil (120). Based on the sensing value of the sensor (1110), the operation of the switch (1120) may be controlled. For example, the turn ratio of the coil (120) can be adjusted by the switch (1120) based on the sensing value of the sensor (1110). For example, in FIG. 11 (b), as the tap of the switch (1120) is formed at one point of the coil (120), the first coil (421) and the second coil (422) can be distinguished based on the tap.

[0063] Referring to FIG. 12, an operation to check the degree of saturation of the magnet core (110) can be described. Depending on the degree of saturation of the magnet core (110), a current waveform such as FIG. 12 can be displayed. By checking the magnitude of the current in the circuit of the energy harvester (100), the degree of saturation of the magnet core (110) can be checked. FIG. 12 (a) may be a graph of the current in a No Saturation state. FIG. 12 (b) may be a graph of the current in a Saturation state. FIG. 12 (c) may be a graph of the current in a More Saturation state. FIG. 12 (d) may be a graph of the current in a Hard Saturation state. The capacity of power harvested by the energy harvester (100) may vary depending on the degree of saturation of the magnet core (110). For example, if the temperature of an electronic device (e.g., 700 in FIG. 7) (e.g., induction) changes and the current flowing through the magnet core (110) changes, the degree of saturation of the magnet core (110) changes and may exhibit characteristics different from the initial state. The point at which energy harvesting yields the best performance may be a weak saturation state, and

[0064] Referring to FIGS. 11, 12, and 13, according to one embodiment, an energy harvester (100) (e.g., a switch (1120)) may be controlled to operate at a degree of saturation of the magnet core (110) in the range of 60 to 90% relative to the maximum saturation magnetic flux density (e.g., Saturation (e.g., FIG. 12 (b)) to More Saturation (e.g., FIG. 12 (c))). For example, the energy harvester (100) may adjust the turn ratio of the coil (120) or control the connection or disconnection of a plurality of coils (e.g., 421, 422 of FIG. 4, or 621, 622, 623, 629 of FIG. 6) based on the degree of saturation of the magnet core (110). For example, the energy harvester (100) may use a sensor (1110) to [resource] energy The magnitude of the current in the circuit of the harvester (100) can be measured. The energy harvester (100) can control the switch (1120) based on the magnitude of the measured current. The energy harvester (100) can adjust the turn ratio of the coil (120) by controlling the switch (1120). The energy harvester (100) can control the degree of saturation of the magnet core (110) by adjusting the turn ratio of the coil (120). The energy harvester (100) can improve energy harvesting performance by controlling the degree of saturation of the magnet core (110).

[0065] According to one embodiment, the energy harvester (100) can measure the magnitude of the current in the circuit of the energy harvester (100) using a sensor (1110) (e.g., sensor (1310) of FIG. 13) and control a switch (1120) (e.g., switch (1320) of FIG. 13) based on the magnitude of the measured current, thereby connecting a plurality of coils (e.g., first coil (421) and second coil (422)) wound on a magnet core (110) or disconnecting the plurality of coils (e.g., first coil (421) and second coil (422)). For example, in FIG. 13, the energy harvester (100) can connect the first coil (421) and the second coil (422) or disconnect the first coil (421) and the second coil (422) by controlling the switch (1320) based on the sensing value of the sensor (1310). FIG. 13 is an example of a case where the coil (120) includes the first coil (421) and the second coil (422). However, the operation of the switch (e.g., 1320) (e.g., how to connect the three or more coils) can be similarly described even when the coil (120) includes three or more coils, so this is omitted. The energy harvester (100) can connect a plurality of coils (e.g., a first coil (421) and a second coil (422)) or disconnect the plurality of coils (e.g., a first coil (421) and a second coil (422)) based on the sensing value of the sensor (1310) so that the degree of saturation of the magnet core (110) operates in the range of 60 to 90% relative to the maximum saturation magnetic flux density (e.g., Saturation (e.g., (b) of FIG. 12) to More Saturation (e.g., (c) of FIG. 12)). When the first coil (421) and the second coil (422) are connected, the multiple resonance of FIG. 4 may be formed. When the connection between the first coil (421) and the second coil (422) is disconnected, the resonance of FIG. 2 may be formed.As shown in FIG. 13, a compensation capacitor (e.g., first capacitor (431) or second capacitor (432)) suitable for each winding (e.g., first coil (421) or second coil (422)) can be connected to harvest noise of a multiplication component (e.g., multiplication frequency) generated in the power line (190) based on the operation of the switch (1320) and the change of the winding. According to the operation of FIG. 13, the energy harvester (100) (e.g., switch (1120)) can be controlled to operate the degree of saturation of the magnet core (110) in the range of 60 to 90% relative to the maximum saturation magnetic flux density (e.g., Saturation (e.g., FIG. 12 (b)) to More Saturation (e.g., FIG. 12 (c))) as described in FIG. 11 and FIG. 12.

[0066] Those skilled in the art will understand that the embodiments described herein may be applied interchangeably to the extent applicable. For example, those skilled in the art will understand that at least some operations of an embodiment described herein may be omitted, and at least some operations of the embodiments may be applied interchangeably.

[0067] The present disclosure is not limited to the foregoing, and other unmentioned variations will be apparent to those skilled in the art from the present disclosure.

[0068] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs from the description below.

[0069] According to one embodiment, the energy harvester (100) may include a magnet core (110) configured to wrap around a power line (190, 790) through which an alternating current flows or to wind said power line (190, 790), at least one coil (120; 421, 422; 621, 622, 623, 629) wound around said magnet core (110), and at least one capacitor (130; 431, 432; 631, 632, 633, 639) configured to compensate for the inductance generated in said at least one coil (120; 421, 422; 621, 622, 623, 629). The at least one coil (120; 421, 422; 621, 622, 623, 629) and the at least one capacitor (130; 431, 432; 631, 632, 633, 639) may be configured to form at least one resonance point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (190, 790). The energy harvester (100) may be configured to harvest power based on noise corresponding to the at least one harmonic frequency.

[0070] According to one embodiment, the at least one coil (120; 421, 422; 621, 622, 623, 629) may include a first coil (421, 621) and a second coil (422, 622). The first coil (421, 621) and the at least one capacitor (130; 431, 432; 631, 632, 633, 639) may be configured to form a first resonance point corresponding to the second harmonic frequency of the fundamental frequency of the alternating current. The second coil (422, 622) and the at least one capacitor (130; 431, 432; 631, 632, 633, 639) may be configured to form a second resonance point corresponding to the third harmonic frequency of the fundamental frequency of the alternating current.

[0071] According to one embodiment, the at least one capacitor (130; 431, 432; 631, 632, 633, 639) may include a first capacitor (431, 631) and a second capacitor (432, 632). The first coil (421, 621), the first capacitor (431, 631), and the second capacitor (432, 632) may be configured to form a first LC resonant circuit that forms the first resonant point at the second harmonic frequency. The second coil (422, 622), the first capacitor (431, 631), and the second capacitor (432, 632) may be configured to form a second LC resonant circuit that forms the second resonant point at the third harmonic frequency.

[0072] According to one embodiment, the first LC resonant circuit may be configured to operate such that a first power corresponding to the second harmonic frequency is delivered to the load (150, 750) by having a local minimum impedance at the first resonant point. The second LC resonant circuit may be configured to operate such that a second power corresponding to the third harmonic frequency is delivered to the load (150, 750) by having a local minimum impedance at the second resonant point.

[0073] According to one embodiment, while the first power corresponding to the first resonant point of the first LC resonant circuit is transferred to the load (150, 750), the second power corresponding to the second resonant point of the second LC resonant circuit can be transferred to the load (150, 750).

[0074] According to one embodiment, the first coil (421, 621), the first capacitor (431, 631), the second coil (422, 622), and the second capacitor (432, 632) may be connected in series.

[0075] According to one embodiment, the first end of the first coil (421, 621) may be electrically connected to the first end of the load (150, 750). The second end of the first coil (421, 621) may be connected to the first end of the first capacitor (431, 631). The second end of the first capacitor (431, 631) may be electrically connected to the second end of the load (150, 750). The second coil (422, 622) and the second capacitor (432, 632) may be connected in parallel to the first capacitor (431, 631).

[0076] According to one embodiment, the energy harvester (100) may include a third coil (623) and a third capacitor (633) connected in parallel to the second capacitor (432, 632). The first coil (421, 621), the first capacitor (431, 631), the second capacitor (432, 632), and the third capacitor (633) may be configured to form the first resonance point corresponding to the second harmonic frequency of the fundamental frequency of the alternating current. The second coil (422, 622), the first capacitor (431, 631), the second capacitor (432, 632), and the third capacitor (633) may be configured to form the second resonance point corresponding to the third harmonic frequency of the fundamental frequency of the alternating current. The third coil (623), the first capacitor (431, 631), the second capacitor (432, 632), and the third capacitor (633) may be configured to form a third resonance point corresponding to the fourth harmonic frequency of the fundamental frequency of the alternating current.

[0077] According to one embodiment, the energy harvester (100) may be included in an electronic device (700) (e.g., an induction) for transferring energy to an external device, or configured to be mounted on the electronic device (700). The electronic device (700) may include a switching circuit (830) for providing the alternating current to a transmitting coil. The fundamental frequency of the alternating current may correspond to the switching frequency of the switching circuit (830).

[0078] According to one embodiment, the energy harvester (100) may be configured to transfer power of the at least one harmonic frequency to a load (150, 750) included in the electronic device (700) by forming a local minimum impedance at the at least one resonant point.

[0079] According to one embodiment, a method of operating an energy harvester (100) may include an operation of forming at least one resonance point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (190, 790) by using a magnet core (110) configured to wrap around a power line (190, 790) through which an alternating current flows or to wind the power line (190, 790), at least one coil (120; 421, 422; 621, 622, 623, 629) wound on the magnet core (110), and at least one capacitor (130; 431, 432; 631, 632, 633, 639) configured to compensate for the inductance generated in the at least one coil (120; 421, 422; 621, 622, 623, 629). The above method may include an operation of harvesting power based on noise corresponding to at least one harmonic frequency.

[0080] According to one embodiment, in the method, the operation of forming the at least one resonant point may include the operation of forming a first resonant point corresponding to the second harmonic frequency of the fundamental frequency of the alternating current by using the first coil (421, 621) among the at least one coil (120; 421, 422; 621, 622, 623, 629) and the at least one capacitor (130; 431, 432; 631, 632, 633, 639). The operation of forming at least one resonance point may include the operation of the second coil (422, 622) among the at least one coil (120; 421, 422; 621, 622, 623, 629) and the at least one capacitor (130; 431, 432; 631, 632, 633, 639) forming a second resonance point corresponding to the third harmonic frequency of the fundamental frequency of the alternating current.

[0081] According to one embodiment, in the method, the at least one capacitor (130; 431, 432; 631, 632, 633, 639) may include a first capacitor (431, 631) and a second capacitor (432, 632). The first coil (421, 621), the first capacitor (431, 631), and the second capacitor (432, 632) may be configured to form a first LC resonant circuit that forms the first resonant point at the second harmonic frequency. The second coil (422, 622), the first capacitor (431, 631), and the second capacitor (432, 632) may be configured to form a second LC resonant circuit that forms the second resonant point at the third harmonic frequency.

[0082] According to one embodiment, in the method, the operation of harvesting power may include the operation of delivering a first power corresponding to the second harmonic frequency to the load (150, 750) by having the first LC resonant circuit have a local minimum impedance at the first resonant point. The operation of harvesting power may include the operation of delivering a second power corresponding to the third harmonic frequency to the load (150, 750) by having the second LC resonant circuit have a local minimum impedance at the second resonant point.

[0083] According to one embodiment, in the method, the operation of harvesting power may include, while delivering the first power corresponding to the first resonant point of the first LC resonant circuit to the load (150, 750), delivering the second power corresponding to the second resonant point of the second LC resonant circuit to the load (150, 750).

[0084] According to one embodiment, in the method, the first coil (421, 621), the first capacitor (431, 631), the second coil (422, 622), and the second capacitor (432, 632) may be connected in series.

[0085] According to one embodiment, in the method, the first end of the first coil (421, 621) may be electrically connected to the first end of the load (150, 750). The second end of the first coil (421, 621) may be connected to the first end of the first capacitor (431, 631). The second end of the first capacitor (431, 631) may be electrically connected to the second end of the load (150, 750). The second coil (422, 622) and the second capacitor (432, 632) may be connected in parallel to the first capacitor (431, 631).

[0086] According to one embodiment, in the method, the energy harvester (100) may include a third coil (623) and a third capacitor (633) connected in parallel to the second capacitor (432, 632). The operation of forming at least one resonance point may include the operation of forming the first resonance point corresponding to the second harmonic frequency of the fundamental frequency of the alternating current using the first coil (421, 621), the first capacitor (431, 631), the second capacitor (432, 632), and the third capacitor (633). The operation of forming at least one resonant point may include forming the second resonant point corresponding to the third harmonic frequency of the fundamental frequency of the alternating current by using the second coil (422, 622), the first capacitor (431, 631), the second capacitor (432, 632), and the third capacitor (633). The operation of forming at least one resonant point may include forming the third resonant point corresponding to the fourth harmonic frequency of the fundamental frequency of the alternating current by using the third coil (623), the first capacitor (431, 631), the second capacitor (432, 632), and the third capacitor (633).

[0087] According to one embodiment, in the method, the energy harvester (100) may be configured to be included in an electronic device (700) for transferring energy to an external device, or to be mounted on the electronic device (700). The electronic device (700) may include a switching circuit (830) for providing the alternating current to a transmitting coil. The fundamental frequency of the alternating current may correspond to the switching frequency of the switching circuit (830).

[0088] According to one embodiment, in the method, the energy harvester (100) may be configured to transfer power of the at least one harmonic frequency to a load (150, 750) included in the electronic device (700) by forming a local minimum impedance at the at least one resonant point.

[0089] According to one embodiment, in a non-transitory computer-readable recording medium for storing instructions, the instructions may cause the electronic device (700) to perform at least one operation when executed individually or collectively by at least one processor of the electronic device (700). The above at least one operation may include forming at least one resonance point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (190, 790) by using a magnet core (110) configured to wrap around a power line (190, 790) through which an alternating current flows or to wind the power line (190, 790), at least one coil (120; 421, 422; 621, 622, 623, 629) wound on the magnet core (110), and at least one capacitor (130; 431, 432; 631, 632, 633, 639) configured to compensate for the inductance generated in the at least one coil (120; 421, 422; 621, 622, 623, 629). The above at least one operation may include an operation of harvesting power based on noise corresponding to the at least one harmonic frequency.

[0090] According to one embodiment, in the recording medium, the operation of forming the at least one resonant point may include the operation of forming a first resonant point corresponding to the second harmonic frequency of the fundamental frequency of the alternating current by using the first coil (421, 621) among the at least one coil (120; 421, 422; 621, 622, 623, 629) and the at least one capacitor (130; 431, 432; 631, 632, 633, 639). The operation of forming at least one resonance point may include the operation of the second coil (422, 622) among the at least one coil (120; 421, 422; 621, 622, 623, 629) and the at least one capacitor (130; 431, 432; 631, 632, 633, 639) forming a second resonance point corresponding to the third harmonic frequency of the fundamental frequency of the alternating current.

[0091] According to one embodiment, in the recording medium, the at least one capacitor (130; 431, 432; 631, 632, 633, 639) may include a first capacitor (431, 631) and a second capacitor (432, 632). The first coil (421, 621), the first capacitor (431, 631), and the second capacitor (432, 632) may be configured to form a first LC resonant circuit that forms the first resonant point at the second harmonic frequency. The second coil (422, 622), the first capacitor (431, 631), and the second capacitor (432, 632) may be configured to form a second LC resonant circuit that forms the second resonant point at the third harmonic frequency.

[0092] According to one embodiment, in the recording medium, the operation of harvesting power may include the operation of transferring a first power corresponding to the second harmonic frequency to the load (150, 750) by having the first LC resonant circuit have a local minimum impedance at the first resonant point. The operation of harvesting power may include the operation of transferring a second power corresponding to the third harmonic frequency to the load (150, 750) by having the second LC resonant circuit have a local minimum impedance at the second resonant point.

[0093] According to one embodiment, in the recording medium, the operation of harvesting power may include, while delivering the first power corresponding to the first resonant point of the first LC resonant circuit to the load (150, 750), delivering the second power corresponding to the second resonant point of the second LC resonant circuit to the load (150, 750).

[0094] According to one embodiment, in the recording medium, the first coil (421, 621), the first capacitor (431, 631), the second coil (422, 622), and the second capacitor (432, 632) may be connected in series.

[0095] According to one embodiment, in the recording medium, the first terminal of the first coil (421, 621) may be electrically connected to the first terminal of the load (150, 750). The second terminal of the first coil (421, 621) may be connected to the first terminal of the first capacitor (431, 631). The second terminal of the first capacitor (431, 631) may be electrically connected to the second terminal of the load (150, 750). The second coil (422, 622) and the second capacitor (432, 632) may be connected in parallel to the first capacitor (431, 631).

[0096] According to one embodiment, in the recording medium, the energy harvester (100) may include a third coil (623) and a third capacitor (633) connected in parallel to the second capacitor (432, 632). The operation of forming at least one resonance point may include the operation of forming the first resonance point corresponding to the second harmonic frequency of the fundamental frequency of the alternating current using the first coil (421, 621), the first capacitor (431, 631), the second capacitor (432, 632), and the third capacitor (633). The operation of forming at least one resonant point may include forming the second resonant point corresponding to the third harmonic frequency of the fundamental frequency of the alternating current by using the second coil (422, 622), the first capacitor (431, 631), the second capacitor (432, 632), and the third capacitor (633). The operation of forming at least one resonant point may include forming the third resonant point corresponding to the fourth harmonic frequency of the fundamental frequency of the alternating current by using the third coil (623), the first capacitor (431, 631), the second capacitor (432, 632), and the third capacitor (633).

[0097] According to one embodiment, in the recording medium, the energy harvester (100) may be included in an electronic device (700) for transferring energy to an external device, or configured to be mounted on the electronic device (700). The electronic device (700) may include a switching circuit (830) for providing the alternating current to a transmitting coil. The fundamental frequency of the alternating current may correspond to the switching frequency of the switching circuit (830).

[0098] According to one embodiment, in the recording medium, the energy harvester (100) may be configured to transfer power of the at least one harmonic frequency to a load (150, 750) included in the electronic device (700) by forming a local minimum impedance at the at least one resonant point.

[0099] The electronic device according to the various embodiments disclosed in this document may be of various forms. The electronic device may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a consumer electronics device. The electronic device according to the embodiments of this document is not limited to the devices described above.

[0100] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of said items unless the relevant context clearly indicates otherwise. In this document, phrases such as "A or B," "at least one of A and B," "at least one of A or B," "A, B or C," "at least one of A, B and C," and "at least one of A, B, or C" may each include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used simply to distinguish said components from other said components and do not limit said components in any other aspect (e.g., importance or order). Where any (e.g., 1st) component is referred to as “coupled” or “connected” to another (e.g., 2nd) component, with or without the terms “functionally” or “communicationly,” it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0101] The term “module” as used in the various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A module may be a component formed integrally, or a minimum unit of said component or a part thereof that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0102] Various embodiments of this document may be implemented as software (e.g., a program) comprising one or more instructions stored on a storage medium readable by a machine (e.g., an electronic device). For example, a processor (e.g., a controller) of the machine may call at least one of the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. The storage medium readable by the machine may be provided in the form of a non-transitory storage medium. Here, "non-transitory" simply means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and this term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily in the storage medium.

[0103] According to one embodiment, the method according to the various embodiments disclosed herein may be provided as included in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or distributed online (e.g., download or upload) through an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily created on a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0104] According to various embodiments, each component (e.g., module or program) of the components described above may include a singular or multiple entities, and some of the multiple entities may be separated and placed in other components. According to various embodiments, one or more of the components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Generally or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the multiple components in the same or similar manner as those performed by the corresponding component among the multiple components prior to integration. According to various embodiments, operations performed by the module, program, or other components may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In an energy harvester (100), A magnet core (110) configured to wrap around a power line (190, 790) through which alternating current flows, or to wind the power line (190, 790), At least one coil (120; 421, 422; 621, 622, 623, 629) wound on the magnet core (110), and It includes at least one capacitor (130; 431,432; 631,632,633,639) configured to compensate for the inductance generated in at least one coil (120; 421,422; 621,622,623,629), and The at least one coil (120; 421,422; 621,622,623,629) and the at least one capacitor (130; 431,432; 631,632,633,639) are configured to form at least one resonance point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (190, 790), and The energy harvester (100) is configured to harvest power based on noise corresponding to at least one harmonic frequency, Energy harvester (100).

2. In Paragraph 1, The above at least one coil (120; 421, 422; 621, 622, 623, 629) includes a first coil (421, 621) and a second coil (422, 622), and The first coil (421, 621) and the at least one capacitor (130; 431, 432; 631, 632, 633, 639) are configured to form a first resonance point corresponding to the second harmonic frequency of the fundamental frequency of the alternating current, and The second coil (422, 622) and the at least one capacitor (130; 431, 432; 631, 632, 633, 639) are configured to form a second resonance point corresponding to the third harmonic frequency of the fundamental frequency of the alternating current. Energy harvester (100).

3. In Paragraph 2, The above at least one capacitor (130; 431, 432; 631, 632, 633, 639) includes a first capacitor (431, 631) and a second capacitor (432, 632), and The first coil (421, 621), the first capacitor (431, 631), and the second capacitor (432, 632) are configured to form a first LC resonant circuit that forms the first resonance point at the second harmonic frequency, and The second coil (422, 622), the first capacitor (431, 631), and the second capacitor (432, 632) are configured to form a second LC resonant circuit that forms the second resonance point at the third harmonic frequency. Energy harvester (100).

4. In Paragraph 3, The first LC resonant circuit is configured to operate such that a first power corresponding to the second harmonic frequency is transferred to the load (150, 750) by having a local minimum impedance at the first resonant point, and The second LC resonant circuit is configured to operate such that a second power corresponding to the third harmonic frequency is transferred to the load (150, 750) by having a local minimum impedance at the second resonant point. Energy harvester (100).

5. In Paragraph 4, While the first power corresponding to the first resonant point of the first LC resonant circuit is transferred to the load (150, 750), the second power corresponding to the second resonant point of the second LC resonant circuit is transferred to the load (150, 750). Energy harvester (100).

6. In Paragraph 3, The first coil (421, 621), the first capacitor (431, 631), the second coil (422, 622), and the second capacitor (432, 632) are connected in series. Energy harvester (100).

7. In Paragraph 3, The first end of the first coil (421, 621) is electrically connected to the first end of the rod (150, 750), and The second terminal of the first coil (421, 621) is connected to the first terminal of the first capacitor (431, 631), and The second terminal of the first capacitor (431, 631) is electrically connected to the second terminal of the load (150, 750), and The second coil (422, 622) and the second capacitor (432, 632) are connected in parallel to the first capacitor (431, 631). Energy harvester (100).

8. In Paragraph 7, It further includes a third coil (623) and a third capacitor (633) connected in parallel to the second capacitor (432, 632), and The first coil (421, 621), the first capacitor (431, 631), the second capacitor (432, 632), and the third capacitor (633) are configured to form the first resonance point corresponding to the second harmonic frequency of the fundamental frequency of the alternating current, and The second coil (422, 622), the first capacitor (431, 631), the second capacitor (432, 632), and the third capacitor (633) are configured to form the second resonance point corresponding to the third harmonic frequency of the fundamental frequency of the alternating current, and The third coil (623), the first capacitor (431, 631), the second capacitor (432, 632), and the third capacitor (633) are configured to form a third resonance point corresponding to the fourth harmonic frequency of the fundamental frequency of the alternating current. Energy harvester (100).

9. In Paragraph 1, The above energy harvester (100) is configured to be included in an electronic device (700) for transferring energy to an external device, or to be mounted on the electronic device (700). The electronic device (700) includes a switching circuit (830) for providing the alternating current to the transmitting coil, and The fundamental frequency of the above alternating current corresponds to the switching frequency of the switching circuit (830). Energy harvester (100).

10. In Paragraph 9, The energy harvester (100) is configured to transfer power of the at least one harmonic frequency to a load (150, 750) included in the electronic device (700) by forming a local minimum impedance at the at least one resonant point. Energy harvester (100).

11. In the method of operating the energy harvester (100), An operation to form at least one resonance point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (190, 790) by using a magnet core (110) configured to wrap around a power line (190, 790) through which an alternating current flows or to wind said power line (190, 790), at least one coil (120; 421, 422; 621, 622, 623, 629) wound on said magnet core (110), and at least one capacitor (130; 431, 432; 631, 632, 633, 639) configured to compensate for the inductance generated in said at least one coil (120; 421, 422; 621, 622, 623, 629), and a capacitor (130; 431, 432; 631, 632, 633, 639) configured to compensate for the inductance generated in said at least one coil (120; 421, 422; 621, 622, 623, 629). The operation of harvesting power based on noise corresponding to at least one harmonic frequency, method.

12. In Paragraph 11, The operation of forming at least one resonance point described above is, An operation to form a first resonance point corresponding to the second harmonic frequency of the fundamental frequency of the alternating current using the first coil (421, 621) among the at least one coil (120; 421, 422; 621, 622, 623, 629) and the at least one capacitor (130; 431, 432; 631, 632, 633, 639), and The second coil (422, 622) among the at least one coil (120; 421, 422; 621, 622, 623, 629) and the at least one capacitor (130; 431, 432; 631, 632, 633, 639) include an operation of forming a second resonance point corresponding to the third harmonic frequency of the fundamental frequency of the alternating current. method.

13. In Paragraph 12, The above at least one capacitor (130; 431, 432; 631, 632, 633, 639) includes a first capacitor (431, 631) and a second capacitor (432, 632), and The first coil (421, 621), the first capacitor (431, 631), and the second capacitor (432, 632) are configured to form a first LC resonant circuit that forms the first resonance point at the second harmonic frequency, and The second coil (422, 622), the first capacitor (431, 631), and the second capacitor (432, 632) are configured to form a second LC resonant circuit that forms the second resonance point at the third harmonic frequency. method.

14. In Paragraph 13, The operation of harvesting the above power is, The operation of transmitting a first power corresponding to the second harmonic frequency to a load (150, 750) by the first LC resonant circuit having a local minimum impedance at the first resonant point, and The operation includes transferring a second power corresponding to the third harmonic frequency to the load (150, 750) by the second LC resonant circuit having a local minimum impedance at the second resonant point. method.

15. In a non-transitory computer-readable recording medium for storing instructions, said instructions cause said electronic device (700) to perform at least one operation when executed individually or collectively by at least one processor of the electronic device (700), and The above at least one operation is, The operation of converting alternating current power provided by a power source into direct current power using a rectifier (820), and By using a switching circuit (830) to perform a switching operation on the DC power, an operation to provide an AC current, and An operation to form at least one resonance point corresponding to at least one harmonic frequency of the fundamental frequency of the alternating current flowing in the power line (190, 790) by using a magnet core (110) configured to wrap around the power line (190, 790) through which the alternating current flows or to wind the power line (190, 790), at least one coil (120; 421, 422; 621, 622, 623, 629) wound on the magnet core (110), and at least one capacitor (130; 431, 432; 631, 632, 633, 639) configured to compensate for the inductance generated in the at least one coil (120; 421, 422; 621, 622, 623, 629), and, The operation of harvesting power based on noise corresponding to at least one harmonic frequency, Recording media.

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