Power supply for portable use

Abstract

A power system and a method for the power system are provided. The power system includes a power unit. The power unit includes at least two of the following power units: (1) a first power unit, wherein the first power unit is configured to generate electrical energy from heat dissipation of a human body using a detector; (2) a second power unit, wherein the second power unit is configured to generate electrical energy from electromagnetic radiation energy present in a surrounding electromagnetic environment using an antenna; and (3) a third power unit (103), wherein the third power unit is configured to generate electrical energy from solar energy or light energy present in a local lighting environment using a light-sensing unit. The first power unit, the second power unit, and the third power unit are operable when located on or proximate to a human skin.

Description

Technical Field

[0001] The embodiments presented herein relate generally to power supplies for portable applications, and more specifically to power supplies configured to generate electrical energy for portable applications. Corresponding methods are also disclosed herein. Background Technology

[0002] While forecasters predict that mobile phone sales will reach saturation in the coming years, market research indicates that wearable devices will continue to grow. Modern wearable technology encompasses a wide range of applications, such as smartwatches, sensors, biomedical applications, security and defense systems, clothing enhancement, entertainment devices, virtual reality (VR) headsets, web-enabled glasses, and Bluetooth headsets.

[0003] Some wearable devices are designed to be embedded inside clothing. Embedding wearable devices in a user's clothing allows the user to access connectivity services provided by, for example, 4G / 5G or WiFi communication while freeing their hands.

[0004] Many portable electronic devices, such as mobile phones, are powered by rechargeable batteries. Sustained battery availability is crucial for portable electronic devices. Users are always frustrated when their devices become unusable due to a dead battery, and critical services can be interrupted. Users also need to frequently plug in the battery charger to recharge, and during charging, the functionality of the portable electronic device is often limited.

[0005] Lithium-ion batteries are a common power source for portable electronic devices, and the technology has matured in recent years, offering longer battery life. However, lithium-ion batteries are relatively heavy, large, and rigid. Wearable devices typically benefit from their small size and low weight, as they are designed for portable use.

[0006] However, the energy or power a battery can store is closely related to its size and weight. Therefore, the necessary frequent charging and recharging of wearable devices for portable applications is a challenge, necessitating a compatible power source for wearables. Consumers generally desire electronic wearables that are small, have long battery life, and require minimal worry about recharging. For wearable devices, a small form factor and long battery life are directly contradictory. Furthermore, limited operating time due to power capacity constraints is a major annoyance affecting user behavior. Therefore, further solutions are needed in this area. Summary of the Invention

[0007] The purpose of the implementation scheme described in this paper is to provide a solution to the problems disclosed above.

[0008] According to a first aspect, a method for a power supply system configured to provide electrical energy for portable use is proposed. The method includes generating electrical energy for portable use using at least two of three power sources: (1) a first power supply unit configured to generate electrical energy from heat dissipation from a human body using a detector; (2) a second power supply unit configured to generate electrical energy from electromagnetic radiation energy present in the surrounding environment using an antenna; and (3) a third power supply unit configured to generate electrical energy from solar or light energy present in a localized lighting environment using a photosensitive unit. The first, second, and third power supply units are operable when located on or near human skin.

[0009] According to a second aspect, a power supply system configured to provide electrical energy for portable applications is proposed. The power supply system includes power supply units. Each power supply unit includes at least two of the following: (1) a first power supply unit configured to generate electrical energy from heat dissipation from a human body using a detector; (2) a second power supply unit configured to generate electrical energy from electromagnetic radiation energy present in the surrounding environment using an antenna; and (3) a third power supply unit (103) configured to generate electrical energy from solar or light energy present in a localized lighting environment using a photosensitive unit. The first, second, and third power supply units are operable when located on or near human skin.

[0010] In one aspect, the power supply system includes an analog signal mixer and rectifier unit and an impedance matching unit, wherein the analog signal mixer and rectifier unit and the impedance matching unit are configured to receive power input from the power supply unit and output current having a certain number of amperes and volts for portable applications.

[0011] In one aspect, the power supply system, in addition to the detector (104), antenna (105), and photosensitive unit (106), is included in the wearable device and configured to provide power to the wearable device.

[0012] In one aspect, providing electrical power for portable applications includes providing power to wearable devices.

[0013] First, the power system for portable applications allows users to utilize wearable devices without worrying about recharging the battery by plugging it into a socket or charging station, or having insufficient power during long journeys away from any charging outlet. The power system in the disclosed embodiments is self-sufficient and charges the wearable device from energy from the surrounding environment, such as body heat, light, and electromagnetic radiation.

[0014] Secondly, compared to conventional lithium-ion batteries, power systems also have different form factors; for example, they can be smaller, lighter, and more flexible, thus allowing for different form factors for wearable devices used in portable applications.

[0015] Third, the power system can be embedded in the user's clothing, which also allows wearable devices to be embedded in the clothing, thus freeing the user's hands to engage in other activities.

[0016] Fourth, the power system can be embedded in the human user's clothing, which also allows wearable devices to be embedded or attached to the clothing, thus freeing the user's hands to perform other activities.

[0017] Fifth, by making full use of the spatial distribution of detectors, antennas, and photovoltaic cells on large areas of the human body or clothing for deployment, the power system maximizes the collection of different energies and offsets the potential for low sensitivity of a single detector, antenna, or photovoltaic cell.

[0018] Sixth, the power system can have a modular and distributed architecture. This distributed architecture has the advantage of increasing the combined reliability and maintainability of portable powered devices, i.e., combining wearable devices with their portable power systems according to the implementation plan; it also reduces the end-user's total lifecycle cost. The distributed architecture also increases operational functionality by facilitating compliance with the latest technologies, the ability to wash clothing with embedded power systems or wearable devices, and functional add-ons.

[0019] Other objectives, features, and advantages of the embodiments of the present invention will become apparent from the following detailed description, the appended dependent claims, and the accompanying drawings.

[0020] Generally, unless otherwise expressly defined herein, all terms used in the claims shall be interpreted according to their ordinary meaning in the art. Unless otherwise expressly stated, all references to “a / an / the element, device, component, part, module, step, etc.” shall be interpreted openly, referring to at least one instance of the stated element, device, component, part, module, step, etc. Unless expressly stated otherwise, the steps of any method disclosed herein need not be performed in the exact order disclosed. Attached Figure Description

[0021] The inventive concept will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 Wearable devices for portable purposes according to some embodiments are illustrated schematically; Figure 2 Wearable devices for portable purposes according to some embodiments are illustrated schematically; Figure 3 Examples of communication networks based on some implementation schemes are shown; Figure 4 Portable power systems according to some implementation schemes are illustrated schematically; Figure 5 It is a flowchart of a method based on some implementation schemes; Detailed Implementation

[0022] The inventive concept will now be described more fully below with reference to the accompanying drawings, in which some embodiments of the inventive concept are illustrated. However, the inventive concept can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art. Throughout the specification, the same reference numerals refer to the same elements. Any step or feature illustrated by dashed lines should be considered optional.

[0023] Figure 1A wearable device or device for portable use according to some embodiments disclosed herein is illustrated schematically (1000). The wearable device includes a display (1001), which may be touch-sensitive for user interaction. The wearable device may also include other components for user interaction, such as a user interface. The wearable device can be any kind of electronic device designed to be worn on or near a user's body. Such devices can take many different forms, including but not limited to smartwatches, biomedical applications, security and defense systems, smart clothing enhancements, entertainment devices, communication devices, VR / AR devices, and head-mounted devices. The wearable device can be enabled to communicate using 3G, 4G, 5G, and / or any other future telecommunications standards. The wearable device can also be enabled for WiFi, Bluetooth, or any other additional short-range communication standards. In embodiments, the terms "wearable device," "device for portable use," and "portable use" are used interchangeably.

[0024] In some embodiments, the wearable device includes a power system (400). In other embodiments, the power system is not included in the wearable device. The power system (400) is configured to provide electrical power for portable use.

[0025] In some embodiments disclosed herein, wearable devices are embedded in clothing. This is in Figure 2 The embodiments are illustrated in which wearable devices are attached to or embedded within various garments (1002). Wearable devices embedded in or mounted on garments include: wearable devices clipped onto garments, wearable devices fixed inside or outside garments, wearable devices stored in pockets, or the wearable device itself may be part of the garment. Wearable devices can be embedded in various types of garments (1002), including but not limited to shoes, trousers, shirts, jackets, hats, protective clothing, or underwear. These embodiments also cover wearable devices compatible with embedding in garments, for example, wearable devices may be lightweight and embedded in garments in a manner that does not affect the appearance of the garment. In some embodiments, wires connect the embedded power system (400) to the wearable device, these wires passing through the garment or mounted on flexible wire strips fixed to the garment.

[0026] In some implementations, wearable devices feature a modular and distributed architecture. Wearable devices may include removable or replaceable sub-devices, which are primarily electronic components, user interfaces, or portable power systems (400). The distributed architecture offers the advantage of increased reliability and maintainability of the portable power system, combining the wearable device (1000) with its portable power system (400) according to the implementation; it also increases lifespan and reduces end-user costs. The distributed architecture further enhances operational functionality by facilitating compliance with the latest technologies, washability of the garment, and the availability of functional expansion modules.

[0027] In some implementations, the wearable device (1000) includes a user interface (1001). A user wearing clothing (1002) having an embedded wearable device (1000) and its portable power system (400) can interact with the wearable device in the following ways: - Buttons, headphones / microphones or equivalents and other dedicated interfaces, where buttons / switches are embedded in the garment and can be placed in many locations depending on the nature or purpose of the garment and accessibility requirements: wrists, chest, gloves, belts.

[0028] - A touch-sensitive display, which is an electronic subsystem, in some implementations is flexible / bendable and can be attached or snapped onto clothing (typically on the forearm), or the touch-sensitive display can be a separately powered large-screen display connected to a graphics processor via Bluetooth. - Acoustic functions, which can be achieved via a small set of speakers / microphones attached to the clothing, or headphones (wired / wireless), or wireless earphone plugs, or headphones with bone conduction suitable for high ambient noise environments; - Light-sensitivity, such as notifications triggered by LEDs (which can be set on the arm, chest, wrist, etc.), vibration notifications on the neck, or notifications via smartwatch connectivity.

[0029] Figure 3 This is a schematic diagram illustrating a communication network (2000) in which some implementations of the wearable device (1000) and / or portable power system (400) proposed herein can be applied. The communication network (2000) can be a third-generation (3G) telecommunications network, a fourth-generation (4G) telecommunications network, or a fifth-generation (5G) telecommunications network, and supports any current or future telecommunications standards. The communication network can also be a WiFi network, a Bluetooth network, or other short-range communication network.

[0030] In some implementations, the communication network (2000) includes a radio transceiver unit (2500) configured to provide network access in a radio access network (2100) to a radio transceiver unit (2200) included in user equipment (UE) such as a wearable device (1000) for portable use. The radio access network (2100) is operatively connected to a core network (2300). The core network (2300) is then operatively connected to a serving network (2400) such as the Internet. The radio transceiver unit (2200) is thus enabled via the radio transceiver unit (2500) to access the services of the serving network (2400). The radio transceiver unit (2500) may be a network node, or may be part of a network node such as a radio access network node, radio base station, base transceiver, NodeB, evolved NodeB, gNodeB, access point, access node, antenna integrated radio (AIR), UE, and transmit and receive point (TRP).

[0031] A radio transceiver unit (2500) provides network access in a radio access network (2100) by transmitting and receiving signals to and from another radio transceiver unit (2200) in a beam (2600). The radio transceiver unit (2500) may include a radio unit (2800) and an antenna unit (2700). The radio transceiver unit generates radio waves that form signals for use in the communication network (2000). The signals can be transmitted from the antenna unit (2700), which forms part of the transmitting point of the radio transceiver unit (2500). The radio waves are generated by the radio transmitter and received by the radio receiver using an antenna. Radio waves are widely used in modern technology for fixed and mobile radio communications, broadcasting, radar and other navigation systems, communication satellites, wireless computer networks, and many other applications. In communication networks, radio waves are used to transmit information across space. At the transmitting end, the information to be transmitted is applied to the radio transmitter in the form of a time-varying electrical signal. Information signals formed by radio waves can be audio signals representing sound from a microphone, video signals representing moving images from a camera, or digital signals representing data from a computer, but are not limited to these.

[0032] Wearable devices (1000) require a power source to charge their various components, such as transceivers, displays, and electronics. A power source or energy source is defined as a component used to generate electrical energy. A power source converts energy sources such as potential energy, mechanical energy, thermal energy, or chemical energy into electrical energy, which is then used by the device's circuitry to power the device. Electrical energy corresponds to current and voltage within the implementation. Lithium-ion batteries are a common power source for portable electronic devices.

[0033] In one embodiment, a power system (400) is provided, which is configured to provide electrical energy for portable purposes, namely, to provide power to a wearable device (1000). Figure 4 Portable power systems in some embodiments are illustrated exemplary. The power system (400) includes units and components configured to generate current (300) for powering a wearable device (1000), i.e., the generated current (300) is for portable use. In embodiments, the power supply (100) for portable use includes several different power supplies (101 to 103), i.e., combinations of power supplies that convert different energy sources into electrical energy. In some embodiments, the power supply unit (100) includes at least two of the following power supplies: a first power supply unit (101) configured to generate electrical energy from heat dissipation of the human body using a detector (104); a second power supply unit (102) configured to generate electrical energy from electromagnetic radiation energy present in the surrounding electromagnetic environment using an antenna (105); and a third power supply unit (103) configured to generate electrical energy from solar or light energy present in a localized lighting environment using a photosensitive unit (106).

[0034] In some implementations, the power supply unit (100) includes a first power supply (101), a second power supply (102), and a third power supply (103).

[0035] In some embodiments, the first power unit (101) converts thermal energy emitted from the user's body of the wearable device into electrical energy. In exemplary embodiments, thermal energy corresponds to energy dissipated by the user's body. Depending on the activity and environment, the human body dissipates 290 to 3800 kilojoules of thermal energy per hour, which is converted into 80 to 1050 watts of power. In some embodiments, the detector (104) is a thermoelectric device or thermoelectric generator that generates electrical energy from thermal energy (e.g., cryogenic thermal energy).

[0036] In some embodiments, the detector (104) includes at least one of the following: (1) a single conductive metal wire coated with a thermoelectric material, such as Bi2Te3 or Bi2Se3, in three consecutive layers by chemical vapor deposition (CVD); (2) a graphene layer doped with carbon isotopes deposited as a long line on a polymer or composite material; or (3) a carbon nanotube (CNT) strip.

[0037] In some implementations, the second power supply unit (102) converts electromagnetic radiation energy into electrical energy. Electromagnetic energy is radiant energy that propagates at the speed of light in the form of a wave. It can also be described as radiant energy, electromagnetic radiation, electromagnetic waves, light, or the movement of radiation. Electromagnetic radiation can transfer heat or energy through matter, the atmosphere, or in a vacuum. Electromagnetic energy is captured by an antenna (105). The antenna captures the energy of electromagnetic radiation by converting electromagnetic energy into electrical energy. The antenna comprises a design of metal or other materials that is designed to resonate with the frequency of the electromagnetic radiation. This resonance causes electrons in the antenna to oscillate, thereby generating a current. The efficiency with which the antenna captures electromagnetic radiation is determined by its ability to match the impedance of the incident electromagnetic radiation with the impedance of the circuit to which the antenna is connected.

[0038] In some embodiments, the antenna (105) includes at least one of the following: (1) a graphene layer doped with carbon isotopes, wherein the graphene layer is deposited as a long line on a polymer or composite material; (2) a spiral fine insulated conductive wire arranged around a rigid textile thread, wherein the spiral geometry is optimized for capturing electromagnetic wave energy in all or part of the spectrum from 100 kHz to 23 GHz.

[0039] In some embodiments, the third power supply unit (103) converts sunlight or light from the surrounding environment into electrical energy. In some embodiments, the photosensitive unit (106) is a photovoltaic cell unit. A photovoltaic cell unit can be a semiconductor device that directly converts light energy into electrical energy. The embodiments described herein are not limited to photovoltaic cell units as semiconductor devices; other materials can also be used in photovoltaic cell units.

[0040] In some embodiments, the photosensitive unit (106) includes graphene strips on a silicon-coated polymer and integrates a MoS2 dual-interface film, thereby simultaneously realizing a Schottky junction and a heterojunction. These layers are deposited via CVD.

[0041] In some implementations, the first, second, and third power supply units are capable of operating when located on or near human skin. For example, the power supply units (101 to 103) may be embedded in a user's clothing. Embedding the power supply units in clothing may include attaching the power supply units to the clothing, sewing them into the clothing, or incorporating the power supply units into the clothing fabric or textile. The power supply units (101 to 103) may also be positioned to be in direct contact with the user's body. An illustrative example is as follows... Figure 1 The image shows an illustrative example of a smartwatch that wraps around the wrist.

[0042] The power supply units (101), (102), and (103) can be located near the skin or inside textiles covering parts of the body, specifically the abdomen, upper back, shoulders, neck area, around the legs, and inside a hat. These body areas provide optimal capture of body heat, light, and electromagnetic energy.

[0043] In some implementations, the portable power system (400) supplies current and voltage (300) to the wearable device (1000) and its user interface (1001), respectively.

[0044] When the portable power system (400) uses at least one of the power system units (100, 101, 102), it benefits from the large surface area of ​​the human body or its clothing; if the detector (101) is positioned on or near a large part of the human body (chest, back) where most of the heat energy is dissipated, its sensitivity and output will be enhanced; if the antenna (102) spans the widest part of the human body (around the chest, back, shoulders, and legs), its sensitivity and spectral range are extended; the power generated by the photovoltaic detector (103) increases with the increase in its deployment surface area on the human body or clothing and its elevated position (back, hat, etc.). Furthermore, by utilizing the wide parts of the human body or its clothing to enhance the sensitivity of the antenna (102), the communication range of wearable communication devices can be enhanced, thereby achieving better connectivity performance in rural areas and areas with weak telecommunications coverage.

[0045] Regarding its power generation time characteristics, the first power unit can be continuous when operated on or near human skin; the second power unit can be continuous but location-dependent; and the third power unit is intermittent when operating under the same conditions. In this way, the electrical energy generated by the power source (100) is enhanced and stabilized for use in different environments in which the person is located. The same power system (400) can provide electrical energy and power to one or more wearable devices carried by the same person; the term "device" refers to the use of several wearable devices, which may have different functionalities and / or designs.

[0046] In some implementations, the portable power supply unit (400) includes an analog signal mixer and rectifier unit (200) and an impedance matching unit (202), such as Figure 4The analog signal mixer and rectifier unit (200) and impedance matching unit 202 are illustrated illustratively. They are configured to receive electrical energy input from the power supply unit (100) and output a current (300) having a certain ampere and volt rating for portable applications. In some embodiments, the analog signal mixer and rectifier unit (200) is a circuit that generates a new analog signal with a specific frequency based on two or more signals applied to it. Thus, in some embodiments, the analog signal mixer and rectifier unit (200) combines signals from the power supply units (101 to 103) and converts periodically reversed alternating current (AC) signal currents into direct current (DC). The output from the analog signal mixer and rectifier unit (200) is the input to an impedance matching unit (202) that adjusts the impedance of the signal before outputting the current (300) for portable applications.

[0047] In some implementations, the output of the signal mixer and rectifier unit (200) is the input to either the waveform shaper unit (201) or the buffered solid-state energy storage unit (203), which is configured to supplement the power flow from the signal mixer and rectifier unit (200) to the impedance matching unit (202). In some implementations, the waveform shaper modifies the shape of the output from the analog signal mixer and rectifier unit (200).

[0048] The waveform shaper unit (201) and the parallel buffer solid-state energy storage unit (203) temporarily supplement the direct electrical energy flow from the analog signal mixer and rectifier unit (200) to the impedance matching unit (202). In some embodiments, the parallel buffer solid-state energy storage unit (203) may be a supercapacitor or a lithium-ion energy storage device with its loading circuitry.

[0049] In some implementations, the analog signal mixer and rectifier unit (200) includes at least three parallel inputs. The three parallel inputs accept the arrival of at least two of the outputs of the three power supply units (101 to 103) and provide a single current and voltage as outputs to the impedance matching unit (202) and / or to the waveform shaper unit (201) and / or the buffer solid-state energy storage unit (203).

[0050] In some implementations, the impedance matching circuit (202) and the analog mixer and rectifier (200) can be... Figure 4 Interchange their corresponding positions.

[0051] In some implementations, the connection between the power supply unit (101 to 103) and the analog signal mixer and rectifier unit (200) includes an insulated conductive wire that may be embedded in a strip made of textile, plastic, composite material or metal laminate to provide both flexibility and rigidity, thereby being compatible with the placement of the insulated conductive wire on or near the human body or its clothing.

[0052] In some embodiments of the implementation, units (101 to 103), (104 to 106), and (200 to 203) can be disassembled and reinstalled inside or on the surface of clothing or any wearable natural or synthetic textile or composite material, and can be pulled out from, for example, an analog signal mixer and rectifier (200) to allow for reuse, replacement, and washing of the clothing or textile.

[0053] Figure 5 This is a flowchart illustrating an embodiment of a method for a power supply system configured to provide electrical energy for portable use. The method includes generating electrical energy for portable use using at least two of three power sources: (1) a first power supply unit 101, configured to generate electrical energy from heat dissipation from a human body using a detector (104); (2) a second power supply unit 102, configured to generate electrical energy from electromagnetic radiation energy present in the surrounding electromagnetic environment using an antenna (105); and (3) a third power supply unit 103, configured to generate electrical energy from solar or light energy present in a localized lighting environment using a photosensitive unit (106). The first, second, and third power supply units are operable when located on or near human skin.

[0054] The inventive concept has been described above with reference to several embodiments. However, as will be readily understood by those skilled in the art, other embodiments besides those disclosed above are also possible within the scope of the inventive concept as defined by the appended claims.

Claims

1. A power system (400) comprising a power unit (100) configured to provide electrical energy for portable applications, the power unit (100) comprising at least two of the following power units: - A first power supply unit (101), wherein the first power supply unit is configured to generate electrical energy from the heat dissipation of the human body using a detector (104); - Second power supply unit (102), wherein the second power supply unit is configured to generate electrical energy from electromagnetic radiation energy present in the surrounding environment using an antenna (105); - A third power supply unit (103), wherein the third power supply unit is configured to generate electrical energy from solar or light energy present in a local lighting environment using a photosensitive unit (106), wherein the first power supply unit, the second power supply unit and the third power supply unit are capable of operating when located on or near human skin.

2. The power supply system according to claim 1, further comprising an analog signal mixer and rectifier unit (200) and an impedance matching unit (202), wherein the analog signal mixer and rectifier unit (200) and the impedance matching unit (202) are configured to receive power input from the power supply unit (100) and output a current (300) having a certain number of amperes and volts for portable use.

3. The power system of claim 1, wherein the power system is designed to be embedded in or mounted on textile, plastic or composite garments.

4. The power system of claim 2, wherein the generated current (300) is used by a wearable device carried on the human body or clothing.

5. The power supply system according to claims 1 and 2, wherein the output of the signal mixer and rectifier unit (200) is the input of the waveform shaper unit (201) or the input of the buffer solid-state energy storage unit (203), the buffer solid-state energy storage unit being configured to supplement the electrical energy flow from the signal mixer and rectifier unit (200).

6. The power supply system according to claims 1 to 5, wherein the power supply unit (100), the analog signal mixer and rectifier unit (200), the waveform shaper unit (201), and the impedance matching unit (202) are configured for portable use.

7. The power supply system according to claims 1 to 6, wherein the power supply unit (100), the analog signal mixer and rectifier unit (200), the waveform shaper unit (201), and the impedance matching unit (202) are configured to be included in a wearable device.

8. The power supply system according to claims 1 to 7, wherein the power supply unit (100), the analog signal mixer and rectifier unit (200), the waveform shaper unit (201), and the impedance matching unit (202) are configured to provide power to a wearable device.

9. The power supply system of claim 1, wherein the detector (104) comprises at least one of the following: - A single conductive metal wire, wherein the single conductive metal wire is coated with a thermoelectric material, such as Bi2Te3 or Bi2Se3, in three consecutive layers by chemical vapor deposition (CVD); - A graphene layer doped with carbon isotopes, said graphene layer being deposited as long lines on a polymer or composite material; or - Carbon nanotube (CNT) strips.

10. The power supply system according to claim 1, wherein the antenna (105) comprises at least one of the following: - A graphene layer doped with carbon isotopes, wherein the graphene layer is deposited as long lines on a polymer or composite material; or - A spiral-shaped, finely insulated conductive wire arranged around a textile thread, wherein the spiral geometry is optimized for capturing electromagnetic wave energy in all or part of the 100kHz to 23GHz spectrum.

11. A method for a power system (400) configured to provide electrical energy for portable applications, the method comprising: - Use at least two of the following three power sources to generate (600) electrical energy for portable use: - A first power supply unit (101), wherein the first power supply unit is configured to generate electrical energy from the heat dissipation of the human body using a detector (104); - A second power supply unit (102), wherein the second power supply unit is configured to generate electrical energy from the electromagnetic radiation energy present in the surrounding environment using an antenna (105); - A third power supply unit (103), wherein the third power supply unit is configured to generate electrical energy from the solar or light energy present in the local lighting environment using a photosensitive unit (106), wherein the first power supply unit, the second power supply unit and the third power supply unit are designed to be located on or near the human skin.

12. The method of claim 11, wherein the power supply system further comprises an analog signal mixer and rectifier unit (200) and an impedance matching unit (202), wherein the analog signal mixer and rectifier unit (200) and the impedance matching unit (202) are configured to receive power input from the power supply unit (100) and output a current (300) having a certain number of amperes and volts for portable use.

13. The method of claim 12, wherein the output of the signal mixer and rectifier unit (200) is the input of the waveform shaper unit (201) or the input of the buffer solid-state energy storage unit (203), the buffer solid-state energy storage unit being configured to supplement the electrical energy flow from the signal mixer and rectifier unit (200).

14. The method according to claims 11 to 13, wherein the power supply unit (100), the analog signal mixer and rectifier unit (200), the waveform shaper unit (201), and the impedance matching unit (202) are configured for portable use.

15. The method according to claims 11 to 14, wherein the power supply unit (100), the analog signal mixer and rectifier unit (200), the waveform shaper unit (201), and the impedance matching unit (202) are configured to be included in a wearable device.

16. The method according to claims 11 to 15, wherein the power supply unit (100), the analog signal mixer and rectifier unit (200), the waveform shaper unit (201), and the impedance matching unit (202) are configured to provide power to the wearable device.

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