Device for solar rapid charging

Abstract

A solar rapid charging device is launched. A solar rapid charging device according to one embodiment of the present disclosure collects direct current (DC) power generated from a solar panel and includes an input unit comprising an input switch; a coil unit comprising a first coil and a second coil, each composed of a special alloy wire to induce and convert power from the input unit; a battery unit comprising a first battery and a second battery, wherein each battery is charged according to the required voltage and current by the power from the coil unit; an output unit located between the coil unit and the battery unit, comprising a first output unit and a second output unit to selectively transmit power to the first battery and the second battery, respectively; and a voltage converter located between the second coil and the second battery to perform the function of lowering the voltage, wherein the first coil is composed of an iron alloy wire and the second coil is composed of a copper alloy wire, a negative electrode line from the solar panel is connected to the first coil and a positive electrode line from the solar panel is connected to the second coil, a negative electrode line from the first coil is connected to the first output unit and the second output unit, and a positive electrode line from the second coil is connected to the first output unit and the second output unit, so as to rapidly charge the battery unit while suppressing heat generation during charging. It is characterized by performing charging.

Description

Technology Field

[0001] The present invention relates to a battery charging technology that enables rapid charging with minimized heat generation by using a coil (container, reactor) wound with a special alloy wire (such as a wire mixed with iron and copper) to generate power from solar power generation. More specifically, the invention relates to a solar rapid charging device that efficiently converts and induces DC power generated from sunlight to charge a battery quickly and safely. Background Technology

[0002] Conventional solar power generation systems operate by connecting DC power produced by solar panels to the grid or charging batteries through power conversion devices such as inverters, reactors, and capacitors. However, heat loss and voltage / current fluctuations occurring during this process not only reduce charging efficiency but also negatively affect charging speed. Furthermore, attempting rapid charging can lead to a sharp increase in heat generation, potentially causing problems such as fire and explosion risks or shortened battery lifespan.

[0003] In this regard, prior art 1 discloses a configuration for transmitting solar power to the grid or charging a battery using a reactor (coil), but lacks specific technical proposals for suppressing heat generation through the coil material or winding method. In particular, specific technology regarding a coil structure capable of stably supplying high current while minimizing heat generation is lacking.

[0004] In other words, with conventional technology, attempting faster charging increases heat generation and power loss, which can lead to safety and efficiency issues. Additionally, coils using existing copper wires have relatively high manufacturing costs and can generate significant heat during high-current charging.

[0005] Accordingly, there is a need to develop a charging device that enables rapid charging using solar energy while significantly reducing heat generated during charging, thereby simultaneously improving safety and efficiency.

[0006] The aforementioned background technology is technical information that the inventor possessed for the derivation of the present invention or acquired during the process of deriving the present invention, and it cannot be considered as prior art disclosed to the general public prior to the filing of the present invention. Prior art literature

[0007] Prior Art 1: Korean Registered Patent Publication No. 10-1343590 (December 13, 2013) The problem to be solved

[0008] One objective of the embodiments of the present disclosure is to provide a charging device that enables rapid charging using solar energy while significantly reducing heat generated during charging, thereby simultaneously improving safety and efficiency.

[0009] One objective of the embodiment of the present disclosure is to reduce the charging time compared to conventional methods while minimizing heat generation by utilizing an iron toilet and a copper toilet composed of special alloy wires (e.g., a wire mixed with iron and copper).

[0010] One objective of the embodiments of the present disclosure is to implement an economical and practical charging system by using an alloy wire mixed with silicon, iron, copper, etc., when manufacturing coils to ensure cost reduction and ease of domestic procurement, and to achieve excellent heat resistance.

[0011] The purpose of the embodiments of the present disclosure is not limited to the problems mentioned above, and other unmentioned purposes and advantages of the present invention may be understood from the following description and will be more clearly understood by the embodiments of the present invention. Furthermore, it will be understood that the purposes and advantages of the present invention can be realized by the means and combinations thereof set forth in the claims. means of solving the problem

[0012] A solar rapid charging device according to one embodiment of the present disclosure is a solar rapid charging device capable of rapidly and safely charging various batteries by utilizing solar energy, comprising: an input unit including an input switch that collects direct current (DC) power generated from a solar panel; a coil unit including a first coil and a second coil, each composed of a special alloy wire to induce and convert power from the input unit; a battery unit including a first battery and a second battery, wherein each battery is charged according to the required voltage and current by the power from the coil unit; and an output unit located between the coil unit and the battery unit, including a first output unit and a second output unit, which selectively transmit power to the first battery and the second battery, respectively. The device includes a voltage converter positioned between the second coil and the second battery to perform the function of lowering the voltage, wherein the first coil is composed of an iron alloy wire and the second coil is composed of a copper alloy wire, the negative line from the solar panel is connected to the first coil and the positive line from the solar panel is connected to the second coil, the negative line from the first coil is connected to the first output unit and the second output unit, and the positive line from the second coil is connected to the first output unit and the second output unit, so that rapid charging of the battery unit can be performed while heat generation is suppressed during charging.

[0013] In some examples, the first coil includes an iron-centered ferrite core and is wound in a multilayer cross-winding manner to generate a uniform magnetic field.

[0014] In some examples, the second coil includes a copper-centered silicon steel sheet core and is wound in a multilayer cross-winding manner to maintain a stable current flow.

[0015] In some examples, the first output unit includes an output line connecting the coil unit and the first battery, and a first output switch corresponding to the first battery, and the output line may be composed of a high-purity copper wire.

[0016] In some examples, the second output unit includes an output line connecting the coil unit, the voltage converter, and the second battery, and a second output switch corresponding to the second battery, and the output line may be composed of a copper-iron alloy wire.

[0017] In some examples, the voltage converter may be configured as a DC-DC converter that converts high voltage to low voltage by including a high-efficiency switching element.

[0018] In some examples, the coil portion is configured in a multilayer cross-winding method with a high-temperature insulating coating, and cross-winding is performed by mixing iron-copper alloy wires and copper-iron alloy wires in a set ratio, and the first coil and the second coil can reduce heat generation by mutually complementing the transients that occur during the charging process to suppress voltage and current spikes.

[0019] In some examples, the system further includes a control unit that induces and controls power to the first coil and the second coil to charge the battery, and the control unit includes a pulse width modulation (PWM) control unit, and can be configured to increase charging efficiency and suppress heat generation of the first coil and the second coil by synchronously adjusting the current applied to the first coil and the second coil when the voltage input from the solar panel changes.

[0020] In some examples, the control unit may be configured to maintain optimal charging conditions by adjusting the charging current and voltage according to the voltage and capacity of the battery to be charged, and to maintain the temperatures of the first coil and the second coil within a stable operating range during the charging process.

[0021] In some examples, the control unit may be configured to receive a temperature sensor signal of the battery and automatically limit the charging current when the temperature rises above a threshold value to further ensure safety.

[0022] In addition to this, other methods for implementing the present invention, other systems, and computer-readable recording media storing a computer program for executing said methods may be further provided.

[0023] Other aspects, features, and advantages other than those described above will become clear from the following drawings, claims, and detailed description of the invention. Effects of the invention

[0024] According to an embodiment of the present disclosure, by combining a special alloy wire of an iron one-way and a copper one-way, the heat generated during charging can be significantly reduced compared to conventional methods, while the charging time can be shortened compared to conventional methods.

[0025] In addition, the use of special alloy wires reduces manufacturing costs compared to conventional copper wires, and easy domestic procurement facilitates mass production and distribution.

[0026] In addition, minimizing heat generation significantly reduces the risk of fire and explosion during the charging process, and extends the lifespan of the battery and charging device.

[0027] In addition, it is applicable to various types of batteries and is easy to integrate with other renewable energy sources besides solar power.

[0028] In addition, by efficiently utilizing solar energy, it reduces dependence on fossil fuels and promotes the use of eco-friendly energy.

[0029] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description below. Brief explanation of the drawing

[0030] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings. FIG. 1 is a schematic diagram illustrating the formation of an induced magnetic field opposite to a change in magnetic flux in a solar rapid charging device according to one embodiment. FIG. 2 is an example diagram of a solar cell equivalent circuit in a solar rapid charging device according to one embodiment. FIG. 3 is an exemplary diagram briefly illustrating a battery charging equivalent circuit in a solar rapid charging device according to one embodiment. FIG. 4 is a graph showing the current and voltage of an RLC circuit in a solar rapid charging device according to one embodiment. FIG. 5 is a schematic diagram showing a solar rapid charging device according to one embodiment of the present disclosure. FIG. 6 is a schematic diagram showing a solar rapid charging device according to another embodiment of the present disclosure. Specific details for implementing the invention

[0031] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described in detail together with the accompanying drawings.

[0032] However, the present invention is not limited to the embodiments presented below, but can be implemented in various different forms and should be understood to include all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. The embodiments presented below are provided to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. In describing the present invention, detailed descriptions of related known technologies are omitted if it is determined that such detailed descriptions may obscure the essence of the invention.

[0033] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as “comprising” or “having” are intended to indicate the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Terms such as “first,” “second,” etc., may be used to describe various components, but the components should not be limited by these terms. These terms are used solely for the purpose of distinguishing one component from another.

[0034] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings. In describing with reference to the attached drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted.

[0036] FIG. 1 is a schematic diagram illustrating the formation of an induced magnetic field opposite to a change in magnetic flux in a solar rapid charging device according to one embodiment. FIG. 2 is an example diagram of a solar cell equivalent circuit in a solar rapid charging device according to one embodiment. FIG. 3 is an example diagram briefly illustrating a battery charging equivalent circuit in a solar rapid charging device according to one embodiment. FIG. 4 is a graph showing the current and voltage of an RLC circuit in a solar rapid charging device according to one embodiment.

[0037] In some examples, the solar fast charging device relates to a rapid and heat-free battery charging system capable of quickly and safely charging various batteries using solar energy. The solar fast charging device can be utilized in various application fields, such as electric vehicles, unmanned aerial vehicles, and portable electronic devices, and provides high user satisfaction by maximizing energy efficiency. The solar fast charging device minimizes heat generation and enables rapid battery charging by converting and inducing DC power generated from sunlight with high efficiency through a coil wound with special alloy wires (iron, copper, or other alloys). In particular, this solar fast charging device is designed to maintain stable charging performance even with fluctuations in the output of the solar panel. To achieve this, iron and copper coils are arranged and wired to perform complementary roles, effectively suppressing back flux according to Lenz's Law, thereby further reducing heat generation and preventing degradation of battery life. Additionally, since manufacturing costs are lowered by using alloys that are cheaper than conventional copper wires, it may be advantageous for large-scale adoption in areas where solar power infrastructure is established. As a result, it provides cost-effective energy solutions and promotes eco-friendly energy use.

[0038] In some examples, the solar fast charger can generate DC power by installing, for instance, a 300W solar panel. The output terminal of the solar panel is connected to the input of the charger, and then an iron valve and a copper valve can be connected. Finally, the output of the charger can be connected to a lead-acid battery (e.g., 12V, 60Ah) to complete the preparation for charging. During the charging process, the DC power generated from the solar panel can be transferred to the iron valve and the copper valve through the input. The iron valve stably delivers a high current during the initial charging phase, while the copper valve absorbs transient currents caused by current fluctuations during charging to suppress heat generation. This design minimizes electrical noise and power loss that may occur during the charging process and improves the energy efficiency of the entire system. Due to these structural characteristics, the temperature of the coil and battery is maintained at approximately 30–40°C during the charging process, enabling stable and safe charging. As a result of charging, the charging of a lead-acid battery, which previously took 4 hours with the conventional charging method, can be completed in approximately 40 minutes with the present invention. In addition, the fast charging time significantly improves user convenience and maximizes battery usage time.

[0039] In addition, in some examples, a solar fast charging device according to the present invention is connected to a portable battery pack (e.g., 5V, 10,000mAh), and the iron and copper units are each composed of special coils made of a mixed alloy wire of copper and iron. DC power input from a solar panel is delivered to the battery through the iron and copper units. The iron unit stably delivers a high current during the initial charging phase, while the copper unit suppresses heat generation and ensures a stable current supply even in high-current mode (approx. 3–5A). As a result of charging, the portable battery pack is fully charged in approximately 20 minutes compared to conventional charging methods, and the heat generated by the coils during the charging process is reduced by 30–40% compared to conventional methods, thereby significantly improving charging stability. The two embodiments described above demonstrate cases where charging efficiency is maximized and heat generation is suppressed through the complementary action of the iron and copper units, and charging speed and safety are significantly improved compared to conventional charging methods. This serves as an important factor in enhancing the commercial and practical potential of the solar fast charging device.

[0040] The solar rapid charging device according to the present invention is intended to efficiently manage and transmit power generated from a solar panel. Solar energy is stored in a charging battery via a dedicated line (output line) from the solar rapid charging device (100), and the power from this battery can be utilized to charge various devices. The solar rapid charging device can be configured for the purpose of efficient energy transmission and storage, and ultimately, charging of a power supply device. For example, it can be used in various application fields such as household power consumption equipment, industrial machinery, or emergency power supply devices. Furthermore, this system can respond to various power demands by increasing the stability of the power grid and providing flexibility in energy storage.

[0041] To explain the principle of a solar rapid charging device according to one embodiment, a coil refers to a metal wire wound multiple times. According to Lenz's law as shown in Equation 1 below, when an alternating current flows through the coil, an induced magnetic field opposing the change in magnetic flux is formed as shown in Fig. 1. Therefore, an induced current is formed in the coil in a direction that opposes the flow of the applied current. This may be similar to the principle of a transformer. When the current changes, it affects the induced electromotive force, and the induced electromotive force may be related to the change in magnetic flux. At this time, the change in magnetic flux of the coil is affected by the number of turns of the coil (see Equation 3). The current in the coil is given by Equation 2 and increases over time.

[0042]

[0043] Here, E represents the induced electromotive force, t represents time, and B represents the magnetic flux.

[0044]

[0045] Here, i(t) represents the current at time t, i(0) represents the initial current, L represents the inductance, and V represents the voltage.

[0046]

[0047] Here, L represents inductance, N represents the number of turns of the coil, and Rm represents magnetic resistance.

[0048] In alternating current, the current intensity changes over time, so coils in an AC circuit continuously generate an induced current. However, solar cells produce direct current. When direct current is applied to a coil, the induced current is not formed at a constant level but is generated only up to a stabilized point. For example, if 1A of direct current is applied to a coil, the current increases exponentially from an initial current (0A) to 1A. After 1A, the current stabilizes at 1A. Without a coil, if 1A of current were applied to the circuit, there would immediately be a short-circuited section where 1A of current flows. On the other hand, if a coil is present in the circuit, it can be used as a protection circuit to prevent instantaneous current changes. This phenomenon, where an electrical circuit stabilizes from one steady state to another, is called a transient phenomenon.

[0049] At this time, the transient phenomenon is influenced by the number of turns and magnetic resistance of the coil (see Equation 3). The more wire is wound around the coil and the lower the magnetic resistance of the wire, the slower the current increases.

[0050] In addition, referring to Fig. 2, if we explain the solar rapid charging device (multi-purpose charger) from the perspective of an electrical circuit, transient phenomena occur in the coil of the DC circuit, and the multi-purpose charger also exhibits transient phenomena when represented as an electrical circuit. In Fig. 2, Rd represents a voltage regulator, CB represents a dry cell, CPb represents a lead-acid battery, LCu represents a battery with a copper wire wound around it, and LFe represents a battery with an iron wire wound around it. Rs, Rp, Di, and Iph represent the equivalent circuit factors of the solar cell. The part marked in red in Eh 3 is the equivalent circuit of the solar cell. The positive (+) terminal of the solar cell is connected to a battery made of copper, and the negative (-) terminal is connected to a battery made of iron.

[0051] Meanwhile, if Figure 2 is simplified with respect to battery charging, it can be represented as Figure 3 and Equation 4.

[0052]

[0053] Battery charging is configured with an RLC circuit, as shown in Fig. 3. In an RLC circuit, the current characteristics differ depending on the relationship between the inductance (L), capacitor (C), and resistance. The RLC current graphs according to three conditions are shown in Fig. 4.

[0054] The approximate current graph shape is as shown in Fig. 4, and the exact equation can be derived by using Equation 4 as follows. That is, according to Kirchhoff's First Law (KCL), the sum of currents flowing through a node is zero, so the sum of currents entering a point is equal to the sum of currents leaving that point. By applying Kirchhoff's First Law to the midpoint on the left side of Fig. 3, the equation Iph = I1 + I2 can be derived. Additionally, Kirchhoff's Second Law (KVL) is the law of conservation of energy, which states that in a closed circuit, the energy supplied by the electric circuit is equal to the sum of the energies used. By applying this to a solar cell and an alkaline cell, and to a solar cell and an internal resistance closed circuit, Equation 4 can be obtained.

[0055] Therefore, by calculating the three differential equations of mathematical equation 4 and solving them for the current, a graph of the current with respect to time can be obtained.

[0056] Referring to Figure 4, it can be seen that in both the RLC and LC circuits, the initial current is 0 and the current increases slowly over time. In other words, the multi-purpose charger has the property that the inductor (coil) stores electricity in the form of magnetic energy, and the current increases slowly in both the RLC and LC circuits. Due to this transient phenomenon, the multi-purpose charger can charge the battery within the allowable current range until the electricity supplied from the solar cell reaches a stabilized current value.

[0057] In the experiment to obtain the results of Figure 4, the multi-purpose charger used an 18.15V solar cell, but the 12V lead-acid battery and 1.5V alkaline battery did not explode immediately. This is because the unit of the multi-purpose charger is composed of a coil, and when electricity is applied momentarily from the outside, an induced current is formed in a direction that cancels it out.

[0058] The lead-acid battery charging circuit of the multi-purpose charger is an LC circuit consisting of a coil and a battery, and the dry cell charging circuit is an RLC circuit with added resistance. In LC and RLC circuits, the current increases slowly due to the coil. Due to these circuit characteristics, the multi-purpose charger can charge the battery with a low current for a short period of time while maintaining the high voltage of the solar cell. Considering the property of the multi-purpose charger to offset the current in the initial stages, it is possible to charge stably in the beginning, unlike when using the power grid.

[0059] FIG. 5 is a schematic diagram showing a solar rapid charging device according to one embodiment of the present disclosure.

[0060] Referring to FIG. 5, a solar fast charging device (100) may include an input section (110), a coil section (120), a voltage converter section (130), an output section (140), and a battery section (150). In some examples, the coil section (120) may include a first coil (121) and a second coil (122). The output section (140) may include a first output section (141) and a second output section (142). The battery section (150) may include a first battery (151) and a second battery (152). These components ensure efficient management and safe delivery of power at each stage of the charging system.

[0061] In some examples, the input section (110) may be connected to one side of the coil section (120). In some examples, the input section (110) may be connected to one side of each of the first coil (121) and the second coil (122). For example, a positive line from a solar panel may be connected from the input section (110) to the second coil (122), and a negative line may be connected from the input section (110) to the first coil (121). In some examples, the positive line may be branched from the second coil (122) and connected to the first battery (151) and the second battery (152), respectively. Also, the negative line may be branched from the first coil (121) and connected to the first battery (151) and the second battery (152), respectively.

[0062] The input unit (110) can receive DC power generated from a solar panel and transmit it to the coil unit (120). At this time, the input unit (110) may include filtering and rectification functions for power stability and may contribute to increasing the overall efficiency of the charging device.

[0063] In some examples, the first coil (121) and the second coil (122) of the coil section (120) may be connected in parallel or in series to perform their respective roles. In some examples, the other side of the coil section (120) may be connected to the output section (140). Current induced in the coil section (120) may be transmitted to the output section (140). In some examples, the other side of the first coil (121) may be connected to the first output section (141) and the second output section (142), and the other side of the second coil (122) may be connected to the first output section (141) and the second output section (142).

[0064] In some examples, one side of the output section (140) may be connected to the coil section (120) and the other side may be connected to the battery section (150). In some examples, the first output section (141) may correspond to the first battery (151), and the second output section (142) may correspond to the second battery (152). That is, the output of the first coil (121) may be connected to the first battery (151) through the first output section (141), and the output of the second coil (122) may be connected to the second battery (152) through the second output section (142) via the voltage converter (130) described later. This voltage converter (130) may be located between the other side of the coil section (120) and the second output section (142). That is, one side of the second output unit (142) can be connected to the voltage converter (130) and the other side can be connected to the second battery (152).

[0065] In some examples, for charging the battery section (150) from the coil section (120), a dedicated line (wire) connecting the coil section (120) and the battery section (150) may be made of high-purity copper or a copper-iron alloy. High-purity copper wire with high conductivity is used to maximize the efficiency of power transmission. Copper-iron alloy wire mixed with a small amount of iron serves to absorb excess current and suppress heat generation by complementing magnetic properties. In some examples, high-quality soldering or electrical bonding techniques may be used to ensure a reliable electrical connection so that the other side of the coil section (120) is connected to the battery output section (140). For additional stability, the wire may be mechanically secured using clamps or cable ties, etc. This prevents disconnection or poor contact caused by vibration or external shock. Additionally, the wire connection area may be wrapped with high-temperature insulating tape or heat shrink tubing to maintain electrical insulation and prevent short circuits. Furthermore, the wires are arranged to maintain a straight line or minimal bend within the charging device to minimize resistance to current flow and reduce power loss. These dedicated lines are designed to operate stably even under high current flow, maximizing efficiency in the power transmission process.

[0066] The input section (110) collects direct current (DC) power generated from the solar panel and transmits it to the coil section (120). The input section (110) may include or be referred to as an input switch (111).

[0067] The input switch (111) can perform the function of transmitting or blocking power generated from the solar panel to the internal circuit of the solar rapid charging device (100) (e.g., the first coil (121), the second coil (122), etc.). For example, it can connect DC power generated from the solar panel to the circuit or, if necessary, cut off the power supply. Additionally, the input switch (111) can be used to cut off the power to initialize the solar rapid charging device (100) or to ensure safety during maintenance. Furthermore, the input switch (111) can serve to protect the circuit in the event of overcurrent or short circuit, and when the input switch (111) is turned off, current generated from the solar panel does not flow into the circuit, thereby enabling device protection. Through this, the reliability and safety of the system are greatly improved, and the device can be safely protected even in emergency situations.

[0068] In some examples, the input switch (111) can serve to control the flow of power when starting or stopping charging. The DC power generated from the solar panel is always divided into positive (+) and negative (-). By clearly specifying these polarities at the input switch (111), the current flow can be made correct. If the polarities are connected incorrectly, the circuit may be damaged. Since DC power flows in one direction according to the polarity, the electrical flow can be correctly induced through + and -. The input switch (111) can maintain these polarities to properly deliver power to the coil section (120).

[0069] In some examples, the input switch (111) can ensure a stable power supply by maintaining directionality when the output voltage and current of the solar panel are transmitted into the circuit via + and -. For example, when the input switch (111) is switched to the "ON" state after operation, the power generated from the solar panel can be transmitted to the coil section (120). The coil section (120) can induce power to provide a suitable current and voltage to the battery section (150). Additionally, for example, if the input switch (111) is kept in the "OFF" state before operation, the power generated from the solar panel does not flow into the device. This state can be useful for protecting the circuit during installation, maintenance, or emergency situations. Furthermore, the input switch (111) can be linked with an automated control system to automatically regulate the power flow according to the charge state, which allows the optimal charge state to be maintained without user intervention.

[0070] The coil section (120) may include a first coil (121) and a second coil (122). The coil section (120) can induce and convert power. The first coil (121) and the second coil (122) of the coil section (120) may have a thickness of approximately 0.5 mm and may be formed in a wound shape of approximately 50 m. These winding thicknesses and lengths are precisely designed to increase the efficiency of power transmission and minimize heat generation.

[0071] The first coil (121) may be an iron reactor (Fe Reactor). The first coil (121) may serve as the negative (-) current path within the charging circuit. The first coil (121) is formed as a coil structure wound multiple times using special alloy wires such as silicon, copper, and iron, and plays a role in minimizing heat generation during charging by stably transmitting high current through the induction of a strong magnetic field. It suppresses heat generation caused by excessive current during the charging process by generating an induced current that opposes changes in external current according to Lenz's law. To achieve this, the ratio of alloy wires and the number of windings can be optimized, and a technology for controlling magnetic field saturation characteristics can be applied.

[0072] In some examples, the first coil (121) may be formed into a coil structure wound multiple times using an iron-copper alloy wire. By combining the high magnetic permeability of iron and the excellent conductivity of copper, a strong magnetic field can be induced, and heat generation can be minimized by stably transmitting high current. The ratio of the iron-copper alloy wire can be set, for example, to 70% iron and 30% copper to optimize magnetic properties and conductivity. By winding in a cross-winding manner, a uniform magnetic field can be generated, and heat generation caused by transient current can be suppressed by utilizing the induced current according to Lenz's law.

[0073] In some examples, the ratio of the iron-copper alloy wire of the first coil (122) can be precisely adjusted to 70% iron and 30% copper. This ratio is selected to optimize magnetic properties and electrical conductivity, and the combination of the high magnetic permeability of iron and the excellent conductivity of copper can ensure efficient power transfer. In addition, this ratio improves the mechanical strength of the coil, allowing it to maintain stable performance even during long-term use. Such a ratio may be essential for reliably generating the high current required during the initial charging phase.

[0074] In some examples, the first coil (121) can first maintain a uniform alloy state by mixing iron-copper alloy wires in a specified ratio. The mixed wires can be wound in a multi-layer cross-winding manner on an iron-centered ferrite core. In this process, each winding layer can be designed to cross with the previous layer to generate a uniform magnetic field. After winding is completed, a high-temperature insulating coating can be applied between each winding layer to prevent short circuits and ensure electrical stability. This insulation treatment can play an important role in increasing the long-term reliability of the first coil (121). Finally, the completed first coil (121) can be mounted on a core made of ferrite or silicon steel to prevent magnetic field saturation and maximize the efficiency of the unit. The assembled first coil (121) can undergo a series of electrical and heat tests to verify its electrical characteristics and heat suppression performance. This ensures stability and efficiency in an actual charging environment.

[0075] In the present invention, the first coil (121) uses iron (Fe) as the main material to provide special electrical and magnetic properties. Iron has high magnetic permeability, which is advantageous for forming a strong magnetic field. This allows the magnetic field generated inside the coil to respond to changes in external current, effectively generating an induced current. The magnetic properties of iron help maintain the current flow of the coil stably and contribute to mitigating sudden changes in current. This minimizes heat generation during the charging process and increases the stability of battery charging. Although iron has lower conductivity than copper, appropriate conductivity can be secured by using an iron-copper alloy wire. This reduces power loss that may occur during high current transmission and improves charging efficiency. Iron has high mechanical strength, ensuring the stability of the coil structure and maintaining consistent performance even during long-term use.

[0076] The second coil (122) may be a copper reactor (Cu Reactor). The second coil (122) is a coil constructed using an alloy wire mixed with copper and a small amount of iron and other metals, and can be connected in parallel or in series with an iron reactor to serve as the positive (+) current path within the charging circuit. The second coil (122) suppresses voltage and current spikes by absorbing and mitigating transients that may occur during the charging process. This increases the stability of the entire system and contributes to enhancing the safety of the solar fast charging device (100) by suppressing additional heat generation. Additionally, the second coil (122) can ensure efficient energy transfer by cooperating with the first coil (121) to smoothly manage current fluctuations during the charging process.

[0077] In some examples, the second coil (122) may be constructed using a copper-iron alloy wire. An alloy mixed with the high conductivity of copper and a small amount of iron can achieve additional heat suppression by absorbing and mitigating transient currents. The ratio of the copper-iron alloy wire can be set, for example, to 95% copper and 5% iron to complement magnetic properties while maintaining high conductivity.

[0078] In some examples, the ratio of the copper-iron alloy wire of the second coil (122) may be set to 95% copper and 5% iron. This ratio may focus on compensating for magnetic properties by including a small amount of iron while making full use of the excellent conductivity of copper. This wire ratio may be essential for stabilizing current fluctuations in the later stages of charging and for effectively suppressing voltage and current spikes.

[0079] In some examples, the assembly process of the second coil (122) is similar to that of the first coil (121), but may include several differentiated procedures. First, copper-iron alloy wires can be mixed in a specified ratio to maintain a uniform alloy state. The mixed wires can be wound in a multi-layer cross-winding manner on a copper-centered silicon steel core. In this process, each winding layer crosses the previous layer to maintain a uniform current flow and ensure a stable flow during current fluctuations. After winding is completed, a high-temperature insulating coating can be applied between each winding layer to prevent short circuits and ensure electrical stability. Insulation treatment can play an important role in increasing the long-term stability and efficiency of the second coil (122). Finally, the completed second coil (122) can be mounted on a core made of ferrite or silicon steel to prevent magnetic field saturation and increase the efficiency of the second coil (122). The assembled second coil (122) may undergo a series of electrical and heat tests to verify its electrical characteristics and heat suppression performance. This ensures stability and efficiency in actual charging environments.

[0080] The second coil (122) uses copper (Cu) as the primary material to provide special electrical and magnetic properties such as excellent conductivity, low resistance, magnetic complementarity, and corrosion resistance / durability. Copper has very high conductivity, making current transfer very efficient. This minimizes power loss during battery charging and enables fast charging speeds. The low electrical resistance of copper contributes to reducing heat generated during high current flow. This further suppresses heat generation during the charging process, thereby increasing the safety of the system. In some examples, by using copper-iron alloy wires mixed with a small amount of iron, the conductivity of copper can be maintained while the magnetic properties can be complemented. This is advantageous for absorbing and mitigating transient currents that may occur during the charging process. Copper has excellent corrosion resistance and exhibits minimal performance degradation even with long-term use. This contributes to extending the lifespan of the charging device and reducing maintenance costs.

[0081] In some examples, the coil structure of the first coil (121) and the second coil (122) can be precisely designed to maximize the efficiency and stability of the charging system. The winding method can induce a uniform distribution of the magnetic field and prevent magnetic saturation of the coil by winding each layer of winding in an alternating manner. This effectively controls the induced current generated in response to the changing magnetic field according to Lenz's law, thereby suppressing heat generation caused by transient current. Additionally, the cross-sectional area of ​​the wire and the number of windings can be precisely calculated according to the current requirements of the charging device. The first coil (121) has a greater number of windings and an appropriate wire cross-sectional area to generate a high current during the initial charging phase, while the second coil (122) can adjust the appropriate number of windings and wire cross-sectional area to stabilize current fluctuations during the later stages of charging. This design contributes to maximizing energy efficiency through the optimization of current flow, improving charging speed, and improving the overall performance of the battery. This design can maximize charging efficiency by optimizing the flow of current throughout the charging process and minimizing power loss.

[0082] Automated winding machines can be used during the coil assembly process to maintain high precision and consistency. These machines can mix iron-copper alloy wires and copper-iron alloy wires in precise wire ratios and perform cross-winding according to specified patterns. During the winding process, the tension and density of each winding layer are strictly controlled to ensure consistent magnetic field formation and optimize electrical characteristics. Automated winding machines minimize inconsistencies or variations caused by human error, thereby ensuring consistent quality and performance of the coil.

[0083] Insulation can be achieved by wrapping the spaces between each winding layer with a high-temperature insulating coating material. This enhances the electrical safety of the coil and strengthens the stability of the entire charging system by preventing short circuits or leakage currents. By utilizing a special insulating coating that maintains stable performance even at high temperatures, the insulating material ensures that performance degradation does not occur during prolonged use. Furthermore, the insulation prevents the penetration of moisture or contaminants from the external environment, guaranteeing the durability and long-term stability of the coil.

[0084] Finally, the assembled coil can be mounted on a core composed of iron or silicon steel sheets. The core serves to prevent magnetic field saturation and enhance the coil's efficiency. The combination of the coil and the core can maximize charging efficiency by forming a strong magnetic field while minimizing power loss. During this process, the position and orientation of the coil can be precisely adjusted to ensure a uniform distribution of the magnetic field. The selection of the core material and its design play a crucial role in optimizing the coil's magnetic performance and reducing energy loss in the entire system.

[0085] In other words, the precise configuration and assembly process of the first coil (121) and the second coil (122) is essential for maximizing the efficiency and safety of the charging system. The optimized wire ratio of the iron-copper alloy and the copper-iron alloy provides high magnetic permeability and excellent conductivity simultaneously, effectively suppressing heat generation that may occur during the charging process. The application of a multi-layer cross-winding method and a high-temperature insulation coating enhances the electrical stability of the coils and ensures long-term reliability. This precise design and assembly process enables the iron-copper combination unit to perform optimally within the charging system and plays a crucial role in realizing rapid and heat-free charging, which is a key technical feature of the present invention. In particular, this design allows for flexible adaptation to various charging conditions and battery types, thereby increasing the universality and applicability of the system. While charging efficiency is possible when using units of other materials or combining copper units with units of other alloys, it tends to be significantly lower compared to the iron-copper combination. For example, when using an aluminum unit, electrical conductivity is lower than that of copper, resulting in reduced power transfer efficiency; furthermore, magnetic properties are inferior to those of an iron-copper combination, leading to a decrease in heat suppression capability. This performance degradation can lead to increased charging times and shortened battery life, thereby reducing the overall efficiency of the system. For this reason, the iron-copper combination is considered the optimal choice for reducing manufacturing costs while maintaining the performance of the charging system. While the iron-nickel combination can provide some improved magnetic properties, its commercial application is limited due to high manufacturing costs and reduced conductivity. On the other hand, the copper-copper combination exhibits excellent conductivity but lacks magnetic properties, resulting in poor heat suppression capability. Therefore, the present invention aims to maximize the performance and stability of the entire charging system by optimizing charging efficiency and heat suppression effects using an iron-copper combination unit.

[0086] In some examples, the positive (+) line is connected to the second coil (122) (i.e., copper one-way) and the negative (-) line is connected to the first coil (121) (i.e., iron one-way), in order to maximize the efficiency and stability of the system by making full use of the electrical and magnetic properties of each material.

[0087] To explain this in more detail, copper (Cu) is suitable for the positive (+) line due to its electrical properties, such as high electrical conductivity and low resistance. Copper has very high electrical conductivity, allowing for the efficient transfer of current. This contributes to increased charging efficiency by minimizing power loss (heat loss due to resistance). Copper's low resistance is effective in reducing power loss and suppressing heat generation under high-current conditions. This is particularly important when rapidly charging large-capacity batteries. In other words, by connecting a copper converter to the positive line, the high current generated by the solar panel can be efficiently transferred thanks to copper's high conductivity. Furthermore, the low resistance reduces heat generated when current flows, which can improve system stability and extend battery life.

[0088] On the other hand, iron (Fe) may be suitable for the negative (-) line due to its magnetic properties, such as high magnetic permeability and magnetic field management. Iron has high magnetic permeability, allowing for effective management of the magnetic field. This can be advantageous in suppressing back flux generated during the charging process. Furthermore, thanks to its high magnetic permeability, an iron unit can stably control the induced current according to the changing magnetic field. This can help suppress heat generation when transient currents occur according to Lenz's Law. In other words, by connecting an iron unit to the negative line, heat generation can be reduced by effectively suppressing the back flux that may occur during the charging process. Additionally, when transient currents occur, the iron unit can absorb and mitigate them, thereby increasing the stability of the charging system.

[0089] If the materials of the positive and negative lines are changed (for example, connecting the positive line with a single iron valve and the negative line with a single copper valve), problems such as reduced electrical efficiency, increased heat generation, decreased magnetic efficiency, and reduced charging stability may occur. Since the electrical conductivity of iron is lower than that of copper, using iron in the positive line, where high current flows, leads to increased power loss and heat generation. This not only reduces charging efficiency but can also negatively impact the safety of the system. Furthermore, due to the low conductivity of the single iron valve, power loss in the positive line increases, which can generate heat. This raises the temperature of the battery and charging device, potentially shortening the lifespan of the equipment and increasing the risk of fire. Additionally, single copper valves have lower magnetic permeability compared to iron, resulting in poorer anti-magnetic flux suppression capabilities. Consequently, heat suppression in the negative line is not effectively achieved, which can increase heat generation issues throughout the entire system. Moreover, due to the low magnetic permeability of the single copper valve, the control unit may find it difficult to effectively manage transient currents. This increases the likelihood of voltage and current spikes during the charging process, potentially leading to battery damage and system instability.

[0090] Therefore, connecting the positive line to a copper-only terminal and the negative line to an iron-only terminal provides the following advantages by making the most of the electrical and magnetic properties of each material. Due to the high conductivity of copper, power loss and heat generation can be minimized, and due to the high magnetic permeability of iron, the anti-magnetic flux can be suppressed and heat generation caused by transient current can be reduced, and the control unit can precisely regulate the current to increase the stability of the charging process.

[0091] The voltage conversion unit (130) can function as a DC-DC converter that lowers the voltage for charging the second battery (152). The voltage conversion unit (130) may include or be referred to as a converter (e.g., a DC-DC converter). The voltage conversion unit (130) can stably convert high voltage to low voltage and provide constant voltage and current even with fluctuations in solar output, thereby maintaining the safety and efficiency of the second battery (152). In addition, it may include a function to prevent overcharging and automatically cut off the current when charging is complete. Furthermore, the voltage conversion unit (130) can minimize energy loss by using high-efficiency switching elements to increase power conversion efficiency and enhance the overall stability of the charging process.

[0092] The voltage conversion unit (130) is a key component that stably converts the voltage input from the solar panel to meet the voltage requirements of the battery to be charged, and may include or be referred to as a 5V voltage drop factor.

[0093] The voltage conversion unit (130) is mainly composed of a DC-DC converter and performs the function of converting an input DC voltage into a desired output voltage. In this process, a high-efficiency switching element is used to minimize power conversion losses and reduce heat generation while maximizing energy efficiency. Inside the converter, the switching element operates by rapidly turning on and off to convert the input voltage into a low output voltage. Through this, a stable and constant voltage and current can be supplied to the battery despite fluctuations in the output voltage of the solar panel.

[0094] The voltage conversion unit (130) may also include a filter circuit to reduce ripple in the converted voltage. This filter circuit uses an inductor and a capacitor to remove high-frequency noise and smooths the output voltage, thereby making the power supplied to the battery more stable. This filtering process minimizes electrical noise that may occur during the charging process, thereby improving the performance of the entire system.

[0095] To ensure safety, the voltage converter (130) may include various protection circuits. When abnormal power conditions such as overvoltage, overcurrent, or short circuit occur, the protection circuit immediately detects this and protects the battery and charging device by blocking the operation of the voltage converter (130) or limiting the current. This protection mechanism plays an important role in keeping the system safe from electrical abnormalities that may occur during the charging process.

[0096] Additionally, the voltage conversion unit (130) may have the function of adjusting the charging current and voltage according to the voltage and capacity of the battery to be charged. This maintains the optimal charging state of the battery and mitigates sudden fluctuations in voltage and current that may occur during the charging process, thereby extending the lifespan of the battery and enabling efficient charging. In particular, the 5V voltage drop factor is designed to flexibly respond to various battery types by providing a voltage suitable for batteries that require low voltage, such as small electronic devices or portable battery packs.

[0097] The voltage conversion unit (130) may also include a thermal management design to suppress heat generation. High-efficiency switching elements and an optimized conversion circuit minimize heat generated during the power conversion process and effectively dissipate excess heat through a heat dissipation device such as a heat sink, thereby ensuring stable operation of the system. This contributes to increasing the long-term durability of the charging device and preventing battery damage caused by overheating.

[0098] The voltage converter (130) is located between the control unit (1160) and the battery unit (150) of the charging device, which will be described later, and may supply appropriate voltage and current to the battery according to a charging command received from the control unit (1160). In this process, the voltage converter (130) monitors the condition of the battery to be charged in real time and dynamically adjusts the voltage and current as needed, thereby maximizing charging efficiency and minimizing heat generation.

[0099] The output section (140) may include a first output section (141) and a second output section (142) and may selectively deliver or cut off power to each battery of the battery section (150). In some examples, the first output section (141) may include or be referred to as a first output switch (1411). The first output switch (1411) is located on an output line connecting the coil section (120) and the first battery (151) and may correspond to the first battery (151). Here, the output line may be composed of a high-purity copper wire.

[0100] In some examples, the second output section (142) may include or be referred to as a second output switch (1421). The second output switch (1421) is located on an output line connecting the coil section (120), the voltage converter (130), and the second battery (152), and may correspond to the second battery (152). Here, the output line may be composed of a copper-iron alloy wire.

[0101] The first output switch (1411) and the second output switch (1421) may serve to selectively deliver or cut off power to each specific battery (e.g., dry cell and lead-acid battery) of the battery unit (150). These first output switch (1411) and the second output switch (1421) are important components designed to ensure the efficiency and safety of the charging process, and can deliver current and voltage suitable for each battery's characteristics and support the flexibility of the charging system.

[0102] The first output switch (1411) can be used to transfer power generated from a solar panel to the first battery (151) through the coil section (120). Since the first battery (151) generally requires a high voltage (12V) and a high current (20A), the first output switch (1411) can be designed to reliably handle this high current during the initial charging phase. The first output switch (1411) protects the circuit from being damaged by overcurrent and can prevent overcharging and overheating by cutting off the current after charging is complete. Since the first battery (151), which is a high-capacity battery, is highly likely to generate heat during charging, the first output switch (1411) can play a key role in ensuring charging safety.

[0103] The second output switch (1421) can control the path through which power generated primarily from the solar panel is transmitted to the second battery (152) via the coil section (120), specifically the second coil (122) and the voltage converter (130). When the second output switch (1422) is in the "ON" state, charging of the second battery (152) begins, and when it is in the "OFF" state, charging of the second battery (152) is stopped. Since the second battery (152) requires a low voltage (approximately 1.2V to 3.7V) and a low current (at the level of several hundred mA), the second output switch (1421) can play an important role in preventing battery damage caused by overcharging and excessive current during the charging process. Additionally, when charging is complete, the second output switch (1421) can be turned off to block unnecessary current flow, prevent overcharging issues, and optimize small battery charging characteristics. Through this, the second output switch (1421) can provide the flexibility to independently charge a specific battery even when various battery types are connected.

[0104] The battery unit (150) may include a first battery (151) and a second battery (152). The battery unit (150) may include various batteries having different characteristics and requirements. That is, the first battery (151) and the second battery (152) may require a charging method suitable for their respective characteristics.

[0105] In some examples, the first battery (151) may be, for example, a lead-acid battery capable of handling a voltage of approximately 12V or more and a large current. The first battery (151) has a large energy storage capacity and excellent durability, so it can be widely used for large-scale energy storage applications such as automotive batteries or solar energy storage systems. This first battery (151) can be charged quickly with a high current during the initial charging phase, and as it progresses to the later stages of charging, it can prevent battery damage and perform efficient charging by reducing the current and maintaining a stable voltage. The first coil (121) induces a strong magnetic field during these initial charging phases to generate the necessary current, and the second coil (122) contributes to maximizing charging efficiency by stabilizing fluctuations in voltage and current during the later stages.

[0106] On the other hand, the second battery (152) may be, for example, a dry cell battery, a battery used in small electronic devices. The second battery (152) may require a low voltage of approximately 1.2V to 3.7V and a small amount of current. Alternatively, the second battery (152) may be a portable battery pack of approximately 5V. Since the second battery (152) is sensitive to overcharging and heat generation, precise voltage and current control may be required during the charging process. Since power generated from the solar panel or coil section (120) may not be suitable for charging the second battery (152), the circuit connected for charging the second battery (152) may be equipped with a voltage converter (130) for voltage reduction.

[0107] Meanwhile, regarding the charging process, first, power collection and transmission can be performed. At this time, the solar panel converts solar energy into direct current (DC) power and supplies it to the input unit (110). The input unit (110) stabilizes the voltage and current and controls the flow of power through the input switch (111). When the input switch (111) is in the "ON" state, power is transmitted to the first coil (121) and the second coil (122).

[0108] Next, a charging process can be performed. In the initial charging phase, the first coil (121) is activated to induce a strong magnetic field and deliver a high current to the first battery (151). This is effective for rapidly charging a high-capacity battery, such as a lead-acid battery. The first coil (121) uses an iron-copper alloy wire to stably deliver high current and minimize heat generation. In the initial charging phase, the voltage of the battery rises rapidly, maximizing the energy storage rate. Subsequently, in the later charging phase, the second coil (122) is activated to absorb and mitigate transient current. This supports stable charging of the battery and suppresses voltage and current spikes. The second coil (122) uses a copper-iron alloy wire to effectively manage current fluctuations and achieve additional heat suppression. At this time, the voltage converter (130) is located between the second coil (122) and the second battery (152) to convert the low voltage generated during the charging process into a stable voltage. This enables stable charging even when the voltage is low during the initial charging phase of the second battery (152). During the later charging phase, the current is precisely controlled to maintain the optimal charge state of the battery and maximize charging efficiency.

[0109] Finally, charging completion and safety management can be performed. When charging is complete, the charging circuit is cut off through the first output switch (1411) and the second output switch (1421) to prevent overcharging and maintain the safety of the battery and the charging device.

[0110] According to the present invention, heat generated during charging can be significantly reduced compared to conventional methods through a combination of special alloy wires consisting of iron and copper. This greatly reduces the risk of fire and explosion during the charging process, thereby significantly enhancing safety. Furthermore, the charging device of the present invention can shorten the conventional charging time of approximately 4 hours to about 40 minutes, and in the case of a portable battery pack, charging is completed within about 20 minutes. This is made possible by stably supplying a high current. By using special alloy wires, manufacturing costs can be reduced by approximately five times compared to conventional copper wires, and mass production and distribution are facilitated as they can be easily procured domestically. Minimizing heat generation during the charging process improves the safety of the battery and charging device, and extends battery life. The present invention is applicable to various battery types, including lead-acid batteries, lithium-ion batteries, unmanned aerial vehicle batteries, and portable battery packs, and facilitates integration with other renewable energy sources in addition to solar power. By efficiently utilizing solar energy, it reduces dependence on fossil fuels, promotes eco-friendly energy use, contributes to the establishment of a sustainable energy system, and has a positive impact on environmental protection.

[0111] Industrially, this invention can be usefully applied in various industrial fields as it enables the rapid and safe charging of batteries using solar energy. In the renewable energy sector, it can be applied to residential and industrial solar power systems to increase energy self-sufficiency and reduce the burden on the power grid. In the electric vehicle, electric car, and mobility sectors, it can enhance user convenience and promote the adoption of electric vehicles by rapidly charging their batteries. In unmanned aerial vehicle (drone) battery charging systems, it can improve operational efficiency by efficiently charging drone batteries, and in portable electronic devices, it can be applied to portable battery packs to improve the user experience through rapid charging and heat suppression. Finally, in industrial battery management systems, it enables safe and efficient battery management by minimizing heat generation issues during the charging of large-scale battery packs.

[0112] FIG. 6 is a schematic diagram showing a solar rapid charging device according to another embodiment of the present disclosure.

[0113] Meanwhile, referring to FIG. 6, in some examples, the solar rapid charging device (1000) may include an input unit (110), a coil unit (120), a voltage converter unit (130), an output unit (140), and a battery unit (150), as well as a control unit (1160) and a sensor unit (1170). Since the input unit (110), the coil unit (120), the voltage converter unit (130), the output unit (140), and the battery unit (150) are identical and / or similar to those described above, the control unit (1160) and the sensor unit (1170) will be described below. In the solar rapid charging device (1000) according to the present invention, the control unit (1160) and the sensor unit (1170) play an important role in ensuring the efficiency and safety of the charging process. The structural features and functions of these components will be described in detail below.

[0114] The control unit (1160) plays a central role in inducing and controlling power input from the solar panel to charge the battery.

[0115] The control unit (1160) may include or be referred to as a pulse width modulation (PWM) control unit (1161). The pulse width modulation control unit (1161) is used to precisely control the flow of current during the charging process. The pulse width modulation control unit (1161) performs the role of maximizing charging efficiency and suppressing heat generation by synchronously controlling the magnitude and period of the current applied to the first coil (121) and the second coil (122) in response to fluctuations in the output voltage of the solar panel.

[0116] The control unit (1160) includes a charging control algorithm that monitors the charging status of the battery unit (150) in real time and adjusts the charging current and voltage based on this. This algorithm is designed to maintain optimal charging conditions according to the voltage and capacity of the battery to be charged, and enables stable charging by rapidly reflecting changes in the state of the battery during the charging process.

[0117] The control unit (1160) may include an interface for communication with an external device. Through this, it can transmit status information or error information of the charging device to an external monitoring system, or receive external control commands to dynamically adjust the charging process.

[0118] The sensor unit (1170) detects various physical variables that may occur during the charging process in real time and provides information to the control unit (1160), thereby increasing the safety and efficiency of the charging. The sensor unit (1170) may include a temperature sensor, a voltage sensor, a current sensor, etc.

[0119] The temperature sensor can continuously monitor the temperature of the battery unit (150). When the temperature of the battery unit (150) exceeds a set threshold, the sensor unit (1170) transmits this information to the control unit (1160) to automatically limit the charging current or stop the charging process, thereby preventing battery damage caused by overheating.

[0120] The voltage sensor can accurately measure the voltage of the battery to be charged. The voltage sensor monitors the charging status of the battery unit (150) in real time and transmits voltage fluctuations during the charging process to the control unit (1160). Through this, the control unit (1160) can maintain optimal charging current and voltage.

[0121] The current sensor can measure the magnitude of the current flowing during the charging process. The current sensor detects an overcurrent situation that may occur during the charging process and transmits a warning signal to the control unit (1160). Based on this information, the control unit (1160) adjusts the current to maintain charging efficiency and suppress heat generation.

[0122] In addition, the sensor unit (1170) may include additional environmental sensors, such as a humidity sensor and a light sensor, as needed. These sensors monitor the external environmental conditions of the charging device, enabling more precise charging control and safety management.

[0123] The control unit (1160) and the sensor unit (1170) work closely together to optimize the overall performance of the charging system. The sensor unit (1170) provides real-time data generated during the charging process to the control unit (1160), and the control unit (1160) analyzes this data to dynamically adjust the charging current and voltage. For example, when the output voltage of the solar panel fluctuates, the sensor unit (1170) detects this and transmits it to the control unit (1160). The control unit (1160) synchronously adjusts the current applied to the first coil (121) and the second coil (122) through the pulse width modulation control unit (1161) to increase charging efficiency and minimize heat generation. Additionally, if the temperature of the battery unit (150) exceeds a threshold value, the sensor unit (1170) immediately sends a warning signal to the control unit (1160) to limit the charging current or stop charging. Through this interaction, the charging system can maintain high efficiency and stability.

[0124] In some examples, the charging current and voltage can be adjusted according to the voltage and capacity of the battery to be charged to maintain optimal charging conditions, and the temperatures of the first coil (121) and the second coil (122) can be maintained within a stable operating range during the charging process. This means that the control unit (1160) includes a function to precisely adjust the charging current and voltage based on the voltage and capacity information of the battery unit (150), and ensures stable operation by continuously monitoring the temperature of the coil through the temperature sensor of the sensor unit (1170).

[0125] In addition, the control unit (1160) can receive a temperature sensor signal from the battery unit (1170) and automatically limit the charging current when the temperature rises above a threshold value, thereby ensuring additional safety. This means that the temperature sensor of the sensor unit (1170) detects the temperature of the battery unit (150) in real time and transmits the information to the control unit (1160), so that the control unit (1160) performs the function of automatically limiting the charging current or stopping charging when the temperature exceeds a threshold value. Through this, the risk of battery damage or fire caused by overheating that may occur during the charging process can be effectively prevented.

[0126] That is, the control unit (1160) precisely controls the charging current and voltage to increase the charging efficiency of the battery and suppress heat generation, and the sensor unit (1170) detects the temperature, voltage, current, etc. of the battery and coil in real time and provides information to the control unit (1160), thereby ensuring the stable operation of the charging system. This structural configuration enables the present invention to flexibly respond to various battery types and charging conditions, contributing to increasing the commercial and practical feasibility of the solar rapid charging system.

[0127] The positions of the control unit (1160) and the sensor unit (1170) in the solar rapid charging device (1000) can be carefully designed to maximize the efficiency and stability of the system. That is, the positions of the control unit (1160) and the sensor unit (1170) and their connection relationships can be applied in various ways.

[0128] Since the control unit (1160) plays a central role in managing and controlling the entire charging process, it may be appropriate to place it in the following location. For example, it may be located between the input unit (110) and the coil unit (120). The control unit (1160) may be located after the DC power generated from the solar panel enters through the input unit (110) and before it is transmitted to the coil unit (120). Through this, the control unit (1160) can monitor and control the flow of input power in real time.

[0129] Additionally, for example, the control unit (1160) may be located between the output unit (140) and the voltage converter (130). The control unit (1160) may be located between the output unit (140) and the voltage converter (130) to synchronously control the current applied to the first coil (121) and the second coil (122) during the charging process. This is to effectively perform current control and heat suppression.

[0130] Additionally, for example, the control unit (1160) may be located near the battery unit (150). The control unit (1160) may be placed near the battery unit (150) to monitor the charging status in real time and optimize charging conditions. This is to enable the direct reception and processing of the battery's voltage and capacity information.

[0131] The sensor unit (1170) detects various physical variables occurring during the charging process and provides information to the control unit (1160), thereby ensuring the stability and efficiency of the charging. Accordingly, the optimal location of the sensor unit (1170) may be as follows.

[0132] For example, the sensor unit (1170) may be located near the battery unit (150). To accurately measure the temperature, voltage, current, etc. of the battery, the sensor unit (1170) may need to be located near the battery unit (150). This is to allow the battery's condition to be monitored in real time and to adjust charging conditions as needed.

[0133] Additionally, for example, the sensor unit (1170) may be located around the coil unit (120). A temperature sensor that monitors the temperature of the first coil (121) and the second coil (122) to suppress heat generation may be placed near the coil unit (120). This allows the heating state of the coil to be accurately detected and, if the heating exceeds a threshold value, to immediately transmit a signal to the control unit (1160).

[0134] Additionally, for example, the sensor unit (1170) may be located near the voltage conversion unit (130) and the output unit (140). To detect voltage and current fluctuations that may occur during the voltage conversion process, the voltage sensor and the current sensor may be located near the voltage conversion unit (130) and the output unit (140). This is to provide real-time data so that the charging current and voltage can be precisely controlled.

[0135] In some examples, data collected from the sensor unit (1170) can be directly transmitted to the control unit (1160). To this end, the sensor unit (1170) can be connected to the control unit (1160) via a high-speed data communication line. This connection can be implemented via a wired or wireless method and must ensure stable data transmission within the charging device. Additionally, the control unit (1160) and the sensor unit (1170) must be reliably connected to the power supply system of the charging device. This is to ensure that the control unit (1160) and the sensor unit (1170) can operate reliably according to the power status of the charging device.

[0136] The embodiments according to the present invention described above may be implemented in the form of a computer program that can be executed through various components on a computer, and such a computer program may be recorded on a computer-readable medium. In this case, the medium may include a magnetic medium such as a hard disk, a floppy disk, and a magnetic tape, an optical recording medium such as a CD-ROM and a DVD, a magneto-optical medium such as a floptical disk, and a hardware device specifically configured to store and execute program instructions, such as a ROM, RAM, or flash memory.

[0137] Meanwhile, the above-mentioned computer program may be one specifically designed and configured for the present invention, or one known and available to those skilled in the art of computer software. Examples of computer programs may include machine code, such as that generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc.

[0138] In the specification of the present invention (particularly in the claims), the use of the term "above" and similar descriptive terms may be in both singular and plural. Furthermore, where a range is described in the present invention, it is to include an invention to which individual values ​​belonging to said range are applied (unless otherwise stated), and this is equivalent to describing each individual value constituting said range in the detailed description of the invention.

[0139] Unless explicitly stated or contrary to the order of the steps constituting the method according to the present invention, said steps may be performed in a suitable order. The present invention is not necessarily limited by the order in which said steps are described. The use of all examples or exemplary terms (e.g., etc.) in the present invention is merely for the purpose of describing the present invention in detail, and the scope of the present invention is not limited by said examples or exemplary terms unless limited by the claims. Furthermore, those skilled in the art will understand that various modifications, combinations, and changes may be made according to design conditions and factors within the scope of the claims or equivalents to which they are added.

[0140] Accordingly, the scope of the present invention should not be limited to the embodiments described above, and all scopes equivalent to or equivalently modified from the claims set forth below, as well as the claims set forth below, shall be considered to fall within the scope of the concept of the present invention. Explanation of the symbols

[0142] 100: Solar fast charger 110: Input section (input switch) 120: Coil part 130: Voltage converter 140: Output section 150: Battery section 1160: Control unit 1170: Sensor section

Claims

Claim 1 A solar fast charging device capable of rapidly and safely charging various batteries using solar energy, comprising: an input unit including an input switch that collects direct current (DC) power generated from a solar panel; a coil unit including a first coil and a second coil, each composed of a special alloy wire to induce and convert power from the input unit; a battery unit including a first battery and a second battery, wherein each battery is charged according to the required voltage and current by the power from the coil unit; and an output unit located between the coil unit and the battery unit, including a first output unit and a second output unit, which selectively transmit power to the first battery and the second battery, respectively. A solar rapid charging device comprising a voltage converter positioned between the second coil and the second battery to perform the function of lowering the voltage, wherein the first coil is composed of an iron alloy wire and the second coil is composed of a copper alloy wire, a negative electrode line from the solar panel is connected to the first coil and a positive electrode line from the solar panel is connected to the second coil, a negative electrode line from the first coil is connected to the first output unit and the second output unit, and a positive electrode line from the second coil is connected to the first output unit and the second output unit, thereby performing rapid charging of the battery unit while heat generation is suppressed during charging. Claim 2 A solar rapid charging device according to claim 1, characterized in that the first coil includes an iron-centered ferrite core and is wound in a multi-layer cross-winding manner to generate a uniform magnetic field. Claim 3 A solar rapid charging device according to claim 1, wherein the second coil comprises a copper-centered silicon steel sheet core and is wound in a multi-layer cross-winding manner to maintain a stable current flow. Claim 4 A solar rapid charging device according to claim 1, wherein the first output section includes an output line connecting the coil section and the first battery, and a first output switch corresponding to the first battery, and the output line is composed of a high-purity copper wire. Claim 5 A solar rapid charging device according to claim 1, wherein the second output unit comprises an output line connecting the coil unit, the voltage converter unit, and the second battery, and a second output switch corresponding to the second battery, and wherein the output line is composed of a copper-iron alloy wire. Claim 6 A solar rapid charging device according to claim 1, characterized in that the voltage conversion unit comprises a DC-DC converter that converts high voltage to low voltage, including a high-efficiency switching element.

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