Wired and wireless power sharing system for electric vehicle

Abstract

Provided is a wired and wireless power sharing system for selectively or integrally providing a wired charging service and a wireless charging service to a plurality of electric vehicles by sharing a single power conversion unit and a control unit. The system comprises: a wireless charger; a shared power supply line distributing the output of an inverter to a plurality of wireless charging power supply modules; and a shared switch box which is installed between power supply pads of each of the wireless charging power supply modules and the shared power supply line and selectively controls power supply to the corresponding pads. In addition, a wired charging module may be provided in a parking slot. An integrated control module controls the overall operation of the system, efficiently distributes the total amount of available power by wire or wirelessly according to the charging demand, vehicle type, and state of each of the vehicles, limits charging power, and optimizes charging conditions adaptively to various vehicle characteristics. Through this configuration, the cost of constructing charging infrastructure is reduced, facility operation efficiency is maximized, and a convenient and safe integrated charging environment is provided to a user.

Description

Wired and wireless power sharing system for electric vehicles

[0001] The present invention relates to electric vehicle (EV) charging infrastructure technology, and more particularly, to a wired / wireless power sharing system and an operating method thereof that can selectively or integrally provide wired charging and wireless charging for a plurality of electric vehicles by sharing a single power conversion device or control system.

[0002] With the recent expansion of electric vehicles (EVs), the importance of charging infrastructure is growing. Electric vehicle charging methods can be broadly categorized into wired and wireless charging.

[0003] Conventional wireless charging technology for electric vehicles has generally been a 1:1 correspondence method, in which a single wireless charger (typically including a Power Factor Correction (PFC) circuit and inverter stack for power conversion) is connected to a single wireless charging power supply pad, charging only a single electric vehicle parked on that power supply pad. In other words, each wireless charger is dedicated to only one charging slot. This method has the problem of significantly increasing the initial investment cost, especially when building wireless charging infrastructure in multiple parking spaces, because expensive wireless chargers and related equipment must be individually installed for each charging slot. In environments that require many charging slots, such as apartments, large buildings, and public parking lots, this cost burden has become a major constraint on the spread of wireless charging infrastructure.

[0004] Furthermore, when each wireless charger is dedicated to a single vehicle, the charger remains idle when the vehicle is not charging, lowering the facility's operating rate and hindering efficient utilization of the charger's capacity. For example, after a vehicle completes charging and exits the parking lot, the charger remains inactive until the next vehicle enters and begins charging. This hinders the overall investment efficiency of the installed charging infrastructure.

[0005] Even in the case of wired charging, installing individual chargers for each parking slot can similarly result in installation cost and space inefficiencies, and it can be difficult to manage and control multiple chargers in an integrated manner.

[0006] As a result, conventional 1:1 charging systems suffer from high initial construction costs, low facility operational efficiency, and limited space utilization in environments where charging services must be provided to multiple electric vehicles. Therefore, the need for a new shared charging system has emerged. This system reduces equipment and infrastructure costs by sharing a single power conversion device (e.g., inverter stack) and control system, and even feeder lines as needed. This allows for efficient distribution of the system's total charging capacity to multiple wired or wireless charging vehicles.

[0007] The present invention is intended to solve the problems of the above-mentioned prior art, and its main purposes are as follows.

[0008] First, it significantly reduces the initial investment costs and installation space required to build electric vehicle charging infrastructure by allowing multiple parking slots to share a single power conversion device (e.g., a wireless charger), control system, and power supply line.

[0009] Second, by intelligently distributing and dynamically managing the total charging capacity of shared chargers based on the charging needs, status, or priority of vehicles in each parking slot, the operating efficiency of the facility is maximized and waste of power resources is minimized even under limited power capacity.

[0010] Third, by providing and controlling wired and wireless charging methods in an integrated manner within a single system, it provides convenience to users of various types of electric vehicles and increases the utilization of charging infrastructure.

[0011] Fourth, even in situations where multiple vehicles require charging simultaneously, it adapts to the characteristics of each vehicle (e.g., PWM controllability, type of wireless charging coil, etc.) to provide optimal charging conditions and ensure the safety and reliability of the entire system.

[0012] Ultimately, the present invention aims to provide a 1:N wired / wireless power sharing charging system and its operating method that is cost-effective, highly operationally efficient, and offers both user convenience and safety.

[0013] In order to solve the above-mentioned problem, according to the present invention, a shared system for providing wired and wireless power charging to a plurality of parking slots with a single inverter is provided, the shared system including a wired charging module and / or a wireless charging power supply module arranged in each parking slot; and an integrated control module for controlling the operation of the wired charging module and the wireless charging power supply module.

[0014] The wireless charging power supply module has a shared switch box installed between a shared power supply line and the power supply pad to selectively supply power to the power supply pad, and the shared switch box is controlled by the integrated control module to apply or block power supply to the power supply pad, and preferably has one or more switches inside.

[0015] Each of the above shared switch boxes may have an electrical structure including a first switch and a second switch, which are connected in series between two conductive lines of the shared power supply line and two conductive lines connected to the power supply pad, and when the first switch and the second switch are simultaneously turned off by the control of the integrated control module, the current supplied to the corresponding power supply pad is cut off.

[0016] Each of the above shared switch boxes may have an electrical structure including three switches, and when the three switches are combined into a specific state defined in advance by the control of the integrated control module, the current supply to the corresponding power supply pad is cut off, and voltage is prevented from being applied to the power supply pad in a state where charging is not taking place.

[0017] Preferably, the plurality of parking slots are divided into two or more groups, and an impedance matching device is arranged between each group and the inverter.

[0018] The above inverter and the above two or more groups can be arranged in a tree-like structure, a ring-tree hybrid structure, or a series-parallel hybrid structure.

[0019] The above integrated control module can control the charging power supplied to a specific parking slot through the wired charging module or the wireless charging power supply module so as not to exceed a preset allowable capacity.

[0020] The above integrated control module can distribute the total available charging power supplied to at least one electric vehicle requesting charging among the plurality of parking slots for wired charging or wireless charging.

[0021] The above integrated control module can additionally distribute the surplus charging power secured from the total available charging power to other electric vehicles being charged in the plurality of parking slots when one electric vehicle completes charging and leaves the corresponding parking slot.

[0022] The above integrated control module, when a new electric vehicle enters a parking slot and requests charging, allocates spare charging power within the total available charging power to the new electric vehicle, and when the spare charging power is insufficient, adjusts the charging power of another electric vehicle currently being charged downward and then distributes the secured power to the new electric vehicle.

[0023] The above integrated control module can determine either the total wired charging amount or the total wireless charging amount consumed in the plurality of parking slots, and based on this, determine and distribute the remaining power amount that can be used for other types of charging within the total available charging power.

[0024] The above integrated control module can differentially set and distribute the amount of charging power distributed to each electric vehicle according to the charging demand of the electric vehicles parked in the plurality of parking slots or a predetermined priority.

[0025] The above integrated control module can individually control wired charging or wireless charging operation of an electric vehicle parked in at least one of the plurality of parking slots based on vehicle information or charging status information received from the electric vehicle.

[0026] The above integrated control module can control the wireless charging operation by changing the current control method of the inverter or applying a preset maximum charging power value depending on whether the PWM control is possible or not, when the vehicle information includes information on whether the electric vehicle can be controlled by PWM (Pulse Width Modulation).

[0027] The above integrated control module can control the wireless charging operation by applying a correction value according to the identified type of the receiving coil to the vehicle position detection information, and performing current or voltage control of the inverter based on the corrected position information, when the vehicle information includes information on the type of the wireless charging receiving coil of the corresponding electric vehicle and the type of the receiving coil is identified as one of a plurality of heterogeneous coils learned or defined in advance.

[0028] The above integrated control module, when the type of wireless charging receiving coil of the electric vehicle cannot be clearly identified based on the vehicle information alone, estimates the type of receiving coil using at least one of past charging history, input from a user, or learned external vehicle characteristic information, and applies a correction value according to the estimated type of receiving coil to the vehicle position detection information to control the wireless charging operation.

[0029] The above integrated control module can provide a notification requesting vehicle realignment if the difference between the predicted charge amount and the actual charge amount exceeds a preset range.

[0030] The above integrated control module can control the wireless charging operation by controlling the inverter to supply stable base power so that, when the electric vehicle moves away from the fixed position of the wireless charging pad and the induced voltage decreases, the DC / DC converter installed inside the electric vehicle performs a boost function to enable normal charging.

[0031] The above integrated control module can control the wireless charging operation by transmitting information about the amount of charging power distributed to the electric vehicle to the electric vehicle, and inducing the electric vehicle's current collector to perform charging for the corresponding amount of power by automatically adjusting the PWM (Pulse Width Modulation) width (power control) based on the received information.

[0032] The wired / wireless power sharing system and its operating method according to the present invention provide the following effects.

[0033] First, by sharing a single wireless charger, shared power supply line (for wireless charging), and integrated control module among multiple parking slots, the initial investment and equipment costs required for system construction can be significantly reduced compared to conventional technologies that required individual chargers and control devices for each parking slot. This significantly contributes to the economic expansion of charging infrastructure, particularly in large-scale parking facilities.

[0034] Second, intelligent power distribution and management capabilities allow for efficient power allocation and use based on the charging needs of each parking slot within the limited system-wide power capacity. This increases charging equipment utilization and minimizes the idleness of specific equipment, maximizing the efficient use of power resources.

[0035] Third, by integrating wired and wireless charging functions into a single system, it provides greater convenience to electric vehicle users who prefer or require a variety of charging methods. This expands the scope of charging infrastructure utilization and enhances user satisfaction.

[0036] Fourth, it detects and adapts to various variables, such as vehicle type, wireless charging coil characteristics, and alignment status, to provide optimal charging conditions, enabling safe and efficient customized charging services for each vehicle. This can reduce charging times and positively impact battery life.

[0037] Fifth, it significantly improves the safety of system operation by preventing voltage from being applied to unused power supply pads and preventing overload through a power limiting function.

[0038] Sixth, the modular approach and the ability to apply various shared power line topologies facilitate flexible system design and step-by-step expansion tailored to the characteristics of the installation environment.

[0039] As a result, the present invention has the effect of providing an advanced electric vehicle charging infrastructure solution that improves cost efficiency, operational efficiency, user convenience, safety, and scalability.

[0040] Figure 1 is a drawing schematically illustrating the overall configuration of a wired / wireless power sharing system according to the present invention.

[0041] FIG. 2 is a conceptual diagram illustrating a case in which a shared switch box included in a wireless charging power supply module of the wired / wireless power sharing system of the present invention illustrated in FIG. 1 adopts a structure in which one switch is provided.

[0042] FIG. 3 is a conceptual diagram illustrating a case in which a shared switch box included in a wireless charging power supply module of the wired / wireless power sharing system of the present invention illustrated in FIG. 1 has a structure that effectively blocks current to the corresponding power supply pad by having two switches.

[0043] FIG. 4 is a conceptual diagram illustrating a case in which a shared switch box included in a wireless charging power supply module of the wired / wireless power sharing system of the present invention illustrated in FIG. 1 has a structure in which three switches are provided to perform a current blocking function as well as a voltage application prevention function of an unused power supply pad.

[0044] FIG. 5 is a drawing exemplarily illustrating a tree-type shared power supply line structure in which wireless charging power is branched from a wireless charger to a plurality of charging point groups in a wired / wireless power sharing system according to the present invention, and each charging point group may be equipped with wired or wireless charging functions, either selectively or together.

[0045] FIG. 6 is a drawing exemplarily illustrating a ring-tree hybrid wireless charging power supply line structure in which wireless charging power is branched from a main shared line formed from a wireless charger to a plurality of charging point groups in a wired / wireless power sharing system according to the present invention, and each charging point group can be equipped with wired or wireless charging functions, either selectively or together.

[0046] FIG. 7 is a drawing exemplarily showing a shared power supply line structure in which a shared power supply line from a wireless charger supplies power for wireless charging to a plurality of charging point groups through a series or series-parallel mixed connection in a wired / wireless power sharing system according to the present invention, and each charging point group can be equipped with a wired or wireless charging function selectively or together.

[0047] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. Identical or similar components are given identical or similar drawing reference numerals, and redundant descriptions thereof are omitted. In describing the embodiments disclosed in this specification, if a detailed description of a related known technology is judged to obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. The attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and replacements included in the spirit and technical scope of the present invention.

[0048] Terms containing ordinal numbers, such as "first," "second," etc., may be used to describe various components; however, these terms are used solely to distinguish one component from another and are not limited to the components in question. Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0049] The terms “comprises,” “includes,” or “has” as used herein should be understood to limit the presence of a feature, step, component, or combination thereof described in the specification, but not to exclude the possibility that one or more other features, steps, components, or combinations thereof may be present or added.

[0050]

[0051] As illustrated in FIG. 1, the system (100) of the present invention provides a wireless charging power supply module (130) and / or a wired charging module (150) in each parking slot (S) under the control of an integrated control module (120) to provide a wired or wireless charging service.

[0052]

[0053] A parking slot (S) refers to an individual parking space or area provided for the wired / wireless power sharing system (100) of the present invention to provide charging services to electric vehicles. Figure 1 illustrates multiple parking slots (1, 2, 3, ..., N), indicating that the system is a 1:N sharing system capable of supporting multiple vehicles simultaneously or sequentially.

[0054] Each parking slot (S) is equipped with specialized equipment according to the charging method of the electric vehicle. According to the description of the present invention, a specific parking slot (S) may be equipped with equipment for wireless charging, i.e., a wireless charging power supply module (130) and / or a wired charging module (150) for wired charging. In the embodiment illustrated in FIG. 1, each parking slot (S) is illustrated as being equipped with both a wireless charging power supply module (130) and a wired charging module (150), but there may also be parking slots equipped with only a wireless charging power supply module (130) or only a wired charging module (150).

[0055] Drivers use the charging service by parking their electric vehicles in designated locations within the corresponding parking slots (S). For wireless charging, precise alignment between the current collectors under the vehicle and the ground-based power supply pads (132) is crucial, and the system may provide an alignment guidance function for this purpose. For wired charging, the user connects the charging cable of the wired charging module (150) located within the parking slot (S) to the vehicle to begin charging.

[0056]

[0057] The wireless charger (110) is a core power conversion device for the wireless charging function in the shared system (100) of the present invention. It receives main power supplied from an external source (e.g., 220 V single-phase or 380 V to 440 V three-phase AC power) and converts it into a form of power suitable for wireless charging of electric vehicles, such as high-frequency AC power. This converted high-frequency power is selectively supplied to a plurality of wireless charging power supply pads (132) via a shared power supply line (142).

[0058] In one embodiment of the present invention, the wireless charger (110) may have a capacity of, for example, 22 kW, which may provide sufficient power to wirelessly charge one or more electric vehicles simultaneously or sequentially. The wireless charger (110) may typically include a power factor correction (PFC) circuit and an inverter stack for DC / AC conversion.

[0059] The operation of the wireless charger (110) is precisely controlled by the integrated control module (120) described later. The integrated control module (120) can comprehensively consider the status of the vehicle to be charged, the charging demand of each parking slot, the power situation of the entire system, etc., and instruct the output power amount of the wireless charger (110), the operating frequency, the power supply pad to be activated, etc. In the present invention, since one wireless charger (110) is shared by multiple parking slots (S), there is an advantage in that the system construction cost can be significantly reduced compared to installing a separate inverter for each parking slot.

[0060]

[0061] The integrated control module (120) is a central control device that comprehensively controls and manages the overall operation of the wired / wireless power sharing system (100) of the present invention. As illustrated in Fig. 1, the integrated control module (120) receives an external main power supply and uses it as its own operating power source, and generates and transmits control signals for controlling the operation of other major components within the system.

[0062] The basic functions of the integrated control module (120) are as follows. First, it controls the operation of the wireless charger (110). This may include turning the inverter on / off, adjusting the output power level, etc. Second, it controls the operation of the wired charging module (150) that can be installed in each parking slot (S), such as starting and stopping charging, and monitoring the charging amount. Third, it controls the opening and closing operation of the shared switch box (136) to selectively apply or block the power supply to each wireless charging power supply pad (132). Fourth, it monitors the status of the system, and if necessary, it can provide information or receive user input through a user interface (not shown), and perform basic communication functions with the vehicle to coordinate the charging process.

[0063] Through these basic control functions, the integrated control module (120) operates the entire system to efficiently and safely provide wired or wireless charging services to multiple parking slots using a single inverter and shared equipment. More diverse and specific functions performed by the integrated control module (120), such as power distribution, simultaneous charging management for multiple vehicles, adaptive charging control based on vehicle characteristics, and safety management, will be described in detail later in this specification.

[0064]

[0065] The wireless charging power supply module (130) is a core device for wirelessly supplying power to an electric vehicle, and as shown in FIG. 1, mainly includes a wireless charging power supply pad (132), a resonance cap (134), and a shared switch box (136).

[0066] The wireless charging power supply pad (132) is a core power transmission unit of the wireless charging power supply module (130), and is a transmitting coil that wirelessly transmits energy through electromagnetic induction or magnetic resonance principles with a current collecting pad (not shown) mounted on the bottom of the electric vehicle. It is generally installed under the floor of a parking slot (S), on the surface, or underground, and is positioned so that alignment with the vehicle-side current collecting pad is optimized when the vehicle is parked.

[0067] When power is supplied through the shared switch box (136), the wireless charging power supply pad (132) forms a strong alternating magnetic field using the high-frequency alternating current supplied from the wireless charger (110). This magnetic field generates an induced electromotive force in the vehicle's current collecting pad, which in turn charges the vehicle's battery. The design of the power supply pad (132) (shape, size, material, coil winding method, etc.) is optimized by considering various factors such as the system's operating frequency, target transmission efficiency and power amount, and foreign substance detection and biohazard criteria.

[0068] The resonant cap (134) is a capacitor that is electrically connected in series or parallel with the wireless charging power supply pad (132) within the wireless charging power supply module (130) to form an LC (inductor-capacitor) resonant circuit. The wireless charging system operates at a specific operating frequency (e.g., a standard 85 kHz band), and the capacity of the resonant cap (134) is precisely set to resonate at this operating frequency together with the inductance component of the power supply pad (132).

[0069] Through this resonance phenomenon, the system can flow a larger current at a lower impedance to the feed pad (132), which amplifies the strength of the magnetic field and contributes to greatly improving the power transmission distance and efficiency. The resonant cap (134) is typically made of a component with a stable capacitance value, high withstand voltage, and low loss characteristics, and is typically positioned as close as possible to the feed pad (132) to minimize the influence of parasitic components in the circuit. In Fig. 1, the resonant cap (134) is illustrated as being positioned between the shared switch box (136) and the feed pad (132) to form a power path.

[0070] The shared switch box (136) is a part of the wireless charging power supply module (130) and serves to selectively supply or cut off power to the power supply pad (132) of the module. The shared switch box (136) is installed between the shared power supply line (142) commonly used by a plurality of wireless charging power supply modules (130) within the system and the power supply pad (132) of the wireless charging power supply module (130).

[0071] The integrated control module (120) individually controls the shared switch box (136) included in the wireless charging power supply module (130) of each parking slot (S) depending on whether charging is required. According to the control signal, one or more switches provided inside the shared switch box (136) are operated to connect or disconnect the power path from the shared power supply line (142) to the power supply pad (132). Through this, one wireless charger (110) and the shared power supply line (142) can be efficiently shared by multiple wireless charging power supply modules (130), while power can be concentrated and supplied only to a selected module at a specific time. The specific internal switch configuration of the shared switch box (136) will be described later with reference to FIGS. 2 to 4.

[0072]

[0073] The shared power supply line (142) is a key power transmission line that distributes wireless charging power converted from a single wireless charger (110) to a plurality of wireless charging power supply modules (130) in the wired / wireless power sharing system (100) of the present invention. As illustrated in FIG. 1, the shared power supply line (142) starts by being connected to the output terminal of the wireless charger (110), and is connected to the input terminal of the shared switch box (136) of the wireless charging power supply module (130) arranged in each parking slot (S), so as to be configured to selectively supply power to each power supply pad (132).

[0074] This shared power supply line (142) is designed to transmit power specialized for wireless charging, such as high-frequency AC power generated by the wireless charger (110). Therefore, the impedance characteristics of the line, the material and thickness of the conductor, the shielding structure, etc. must be carefully considered to minimize power loss, reduce the influence of external electromagnetic interference (EMI), and ensure stable power distribution when multiple wireless charging power supply modules (130) are connected. By adopting this shared power supply line (142) in the present invention, there is no need to install a separate inverter and individual power supply line for each wireless charging point, so that the system construction cost and installation space can be significantly reduced.

[0075] The shared power line (142) can be configured in various topologies, as illustrated in FIGS. 5 to 7, depending on the installation environment and system requirements, as will be described later. These various topologies can optimize the scalability, reliability, and efficiency of the system.

[0076]

[0077] The power line extension cap box (144) is an auxiliary device that is installed as needed at an appropriate section on the shared power line (142) to prevent the voltage of the line from becoming unstable or excessively high when the length of the shared power line (142) increases, the number of connected wireless charging power supply modules (130) increases, or other electrical factors, and to maintain stable power quality. FIG. 1 illustrates an example in which one power line extension cap box (144) is installed at the midpoint of the shared power line (142).

[0078] The power line extension cap box (144), as its name suggests, can be composed of a circuit primarily including a capacitor, and can thereby perform functions such as stabilizing the voltage at a specific point of the shared power line (142), improving impedance matching, or filtering harmonics. For example, it suppresses resonance phenomena occurring in a specific section of the line or compensates for voltage fluctuations due to inductive loads, thereby helping to supply power of consistent quality to each wireless charging power supply module (130).

[0079] The specific internal circuit configuration, installation location, and number of power line extension cap boxes (144) are determined by comprehensive consideration of the system's overall length, load conditions, operating voltage level, and target power quality. This ensures that the 1:N shared wireless charging system maintains stable performance even when supporting multiple charging points across a wide area.

[0080]

[0081] A wired charging module (150) is a device installed in a specific parking slot (S) within the wired / wireless power sharing system (100) of the present invention, and supplies charging power to an electric vehicle by directly contacting it via a wire. FIG. 1 illustrates an example in which a wired charging module (150) is installed in all parking slots.

[0082] The wired charging module (150) generally receives power from an external main power source (e.g., AC 220V single-phase or three-phase power source), and may include a power conversion circuit such as an AC / DC converter or an AC / AC converter, a charging control circuit, and a charging connector and cable for connecting to an electric vehicle. For example, in one embodiment of the present invention, the wired charging module (150) may provide a 7kW-class slow charging function.

[0083] The operation of the wired charging module (150) is comprehensively controlled by the integrated control module (120). The integrated control module (120) performs functions such as vehicle connection detection, charging start and end commands, charging current and voltage control (if the module supports variable control function), charging status monitoring, and wired charging power allocation according to the power distribution plan of the entire system. In addition, in order to ensure safe charging, a protection circuit that detects and blocks overcurrent, overvoltage, current leakage, etc. may be included inside or outside the wired charging module (150), and in particular, a brake (e.g., fuse, relay, or switch) that blocks power when the maximum allowable charging capacity is exceeded may be installed.

[0084] By integrating such a wired charging module (150) into the system, charging services can be provided to users of electric vehicles without wireless charging functions or users who prefer wired charging, thereby increasing the usability and convenience of the system.

[0085]

[0086] FIGS. 2 to 4 conceptually illustrate various implementation examples in which a shared switch box (136) connected to a wireless charging power supply pad (132) and a resonant cap (134) as part of a wireless charging power supply module (130) installed in each parking slot (S) has an electrical structure including one (FIG. 2), two (FIG. 3), or three (FIG. 4) switches inside to selectively apply or cut off power supply to the power supply pad according to the control of the integrated control module (120), thereby providing not only a basic switching operation (FIG. 2), but also an enhanced safety function of ensuring a reliable current cutoff to the power supply pad when two switches are used (FIG. 3), and preventing voltage from being applied to the power supply pad when not charging together with the current cutoff when three switches are used (FIG. 4).

[0087]

[0088] FIG. 2 is a conceptual diagram illustrating a structure in which a shared switch box (136) that can be included in a wireless charging power supply module (130) according to one embodiment of the present invention is implemented using a single switch. The diagram shows a wireless charging power supply pad (132) placed on the bottom surface of a parking slot (S), a resonant cap (134) connected thereto, and a shared switch box (136) conceptually illustrated on top of these.

[0089] In this single switch structure, a single switch within the shared switch box (136) is turned ON or OFF according to a control signal from the integrated control module (120, see FIG. 1). In this embodiment, when the switch is turned ON, the current supplied from the shared power supply line (142) mainly flows through the switch path having a relatively very low input impedance, and almost no current flows to the wireless charging power supply pad (132). This effectively deactivates the power supply pad (132), thereby stopping wireless charging in the corresponding parking slot (S). Conversely, when the switch is turned OFF, the bypass path through the switch is blocked, and the current flows to the power supply pad (132) through the resonant cap (134), thereby enabling wireless charging. The arrows shown in the drawing can conceptually represent a single control point or a main current path of such a switch. This single switch structure has the advantage of being relatively simple in configuration, thereby reducing the size, weight, and cost of the shared switch box (136).

[0090]

[0091] FIG. 3 is a conceptual diagram illustrating a “two-switch structure” in which a shared switch box (136) included in a wireless charging power supply module (130, see FIG. 1) according to one embodiment of the present invention is implemented using two switches.

[0092] In this two-switch structure, the shared switch box (136) has a first switch and a second switch (conceptually shown integrated within 136 in the drawing) therein. These two switches can be inserted in series, for example, into each of two main conductive lines branching from the shared power supply line (142) and connected to the resonant cap (134) and the power supply pad (132). The integrated control module (120) can control these two switches individually or simultaneously. In particular, when the first switch is turned on and the second switch is simultaneously controlled to the OFF state, the power line leading to the power supply pad (132) is physically cut off, so that the current supplied to the power supply pad (132) can be very effectively cut off when there is no vehicle in the corresponding parking slot (S) or wireless charging is not required. This contributes to reducing unnecessary power loss and preventing potential problems caused by minute leakage current. The two diverging arrows in the drawing conceptually represent the control of these two switches or the open / closed state of the two current paths formed through them.

[0093]

[0094] FIG. 4 is a conceptual diagram illustrating a “three-switch structure” in which a shared switch box (136) included in a wireless charging power supply module (130) according to one embodiment of the present invention is implemented using three switches.

[0095] In this three-switch structure, the shared switch box (136) has an electrical configuration including three switches therein (conceptually integrated within 136 in the drawing). The integrated control module (120) can provide a further enhanced safety function as well as the current cut-off function to the power supply pad (132) provided in the two-switch structure by controlling these three switches in combination to a specific state defined in advance. Specifically, by operating the three switches in an appropriate combination, when there is no vehicle to be charged in the parking slot (S) and the power supply pad (132) is in an inactive state, it is possible to effectively prevent unwanted voltage from being induced or residual voltage from being applied to the power supply pad or the resonance cap (134). This provides an important advantage that greatly improves the overall safety of the system. In the drawing, three arrows, two radiating from the resonant cap (134) connection into the shared switch box (136) and one descending from the top of the box, conceptually represent the combined control operation of these three switches and the resulting current blocking and voltage application prevention functions.

[0096]

[0097] FIGS. 5 to 7 illustrate various configuration examples of shared power supply lines for distributing wireless charging power from a single wireless charger to a group of charging points, each of which includes a plurality of parking slots, in a wired / wireless power sharing system of the present invention. Each of these parking slots or groups of charging points can be equipped with a wired charging module or a wireless charging power supply module, either selectively or together, and the proposed topologies represent various ways in which slots having various charging functions (wired and / or wireless) can be arranged while supplying wireless charging power through a shared power supply line according to the installation environment and system requirements, such as a tree-like structure (FIG. 5) in which power branches out like tree branches, a ring-tree hybrid structure (FIG. 6) in which power branches out from a main shared line to lower groups, and a structure featuring a series or series-parallel hybrid connection (FIG. 7).

[0098]

[0099] FIG. 5 is a drawing exemplarily illustrating a tree-type shared power supply line structure for supplying power for wireless charging from a single wireless charger (110) to a group of multiple charging points in a wired / wireless power sharing system (100) according to one embodiment of the present invention.

[0100] Referring to Fig. 5, a wireless charger (110) is located at the center of the system. This wireless charger (110) is a device that receives power from an external main power source and converts it into power suitable for wireless charging (e.g., high-frequency AC power). A shared power supply line for wireless charging, which originates from the output terminal of the wireless charger (110), branches out into several main branches, much like tree branches.

[0101] Each main branch line formed in this way is further divided into one or more sub-branches, or is directly connected to a plurality of charging point groups (e.g., 210, 220) to supply power for wireless charging. Each charging point group (210, 220) may include one or more individual parking slots (S). In each of these parking slots, a wireless charging power supply module (130) supplied with power through the tree-type shared power supply line may be installed, similar to the basic system configuration of the present invention (see FIG. 1), or a wired charging module (150) supplied with power through a separate power path and controlled by an integrated control module (120) may be installed. In some cases, two types of charging equipment may be installed in one slot.

[0102] The tree-type shared power supply structure can facilitate system design and management due to its relatively clear and hierarchical power distribution path. Furthermore, it is easy to add independent control or protection devices to each branch, which can help prevent problems occurring in a specific branch from spreading to other branches or to the entire system. For example, by expanding the tree structure in parallel, the overall reliability of the system can be improved while managing the complexity of the wiring structure. The actual power supply to the individual wireless charging power supply modules within each charging point group (210, 220) is selectively achieved by controlling the shared switch box (136) included in the module by the integrated control module (120).

[0103]

[0104] FIG. 6 is a drawing illustrating a ring-tree hybrid type wireless charging sharing structure as another shared power supply line topology that can be adopted in a wired / wireless power sharing system (100) according to one embodiment of the present invention.

[0105] Referring to Figure 6, one or more main shared lines (Main Feeder Lines or Backbones) are formed from the system's wireless charger (110). These main shared lines can be configured in a ring shape to enhance reliability through redundancy of power supply paths, or can extend in a mesh shape to connect major power distribution points. The drawing briefly depicts a ring-shaped backbone structure, with branch points provided at necessary locations along the main shared line.

[0106] At each branch point, sub-branches extend out again in a tree shape to supply wireless charging power to multiple charging point groups (e.g., 310, 320). Each charging point group (310, 320) includes one or more individual parking slots (S) as described in FIG. 5, and each parking slot may optionally be equipped with a wireless charging power supply module (130), a wired charging module (150, see FIG. 1), or both.

[0107] This ring-tree hybrid or backbone-tree architecture is useful when multiple charging points must be deployed in large parking spaces. By efficiently transmitting large amounts of power to key locations via the main shared line (backbone), and then locally distributing power from each key location in a tree-like fashion, it can optimize the overall feeder line length and reduce construction costs. Furthermore, even if a problem occurs in a specific section of the main shared line, the ring structure can continue to supply power through a detour, while the backbone structure can isolate the problematic section to minimize the impact on other parts, thereby improving system stability and ease of maintenance.

[0108] Power supply to individual wireless charging power supply modules within each charging point group (310, 320) is selectively achieved by the integrated control module (120) controlling the shared switch box (136) included in the module.

[0109]

[0110] FIG. 7 is a drawing illustrating another shared power supply line topology that can be applied in a wired / wireless power sharing system (100) according to an embodiment of the present invention, which is an example of a series connection line sharing method or a series-parallel hybrid type wireless charging sharing structure in which a series section and a parallel section are mixed.

[0111] Referring to FIG. 7, a shared power supply line for wireless charging coming from a wireless charger (110) of the system forms a main line, and along this main line, a plurality of groups of charging points (e.g., 410, 420) or individual parking slots (S) may be connected in series, or may be arranged in a form in which a series connection section and a parallel connection section are combined. Each group of charging points (410, 420) or individual parking slot may optionally be equipped with a wired charging module (150), a wireless charging power supply module (130), or both, as described in the previous drawings.

[0112] In particular, when the length of the shared power supply line becomes longer or the number of connected charging points increases, impedance matching devices (146) may be installed at specific points on the line or at regular intervals to maintain a stable power supply to the entire line. The impedance matching device (146) may be a device that performs a function such as compensating for a voltage drop, matching the impedance of the line, or controlling resonance characteristics at a specific frequency. It may be a module that performs a similar function to the power supply line extension cap box (144) or a more complex function. Through the arrangement of these impedance matching devices (146), a stable and efficient power supply to each charging point is enabled even in a series or series-parallel mixed type shared power supply line.

[0113] A topology including serial connection sections has the advantage of simplifying the wiring structure, and by appropriately mixing it with parallel connection sections, it can simultaneously consider the reliability and efficiency of the system, such as minimizing the impact of a failure in a specific section on the entire system or securing flexibility in load distribution. Power supply to individual wireless charging power supply modules within each charging point group (410, 420) is selectively achieved by the integrated control module (120) controlling the shared switch box (136) included in the module.

[0114]

[0115] In the various shared power supply line topologies described above, the wired / wireless power sharing system (100) of the present invention may further include an impedance matching device to effectively address impedance mismatch issues that may arise when multiple electric vehicles simultaneously or sequentially perform wireless charging. This impedance matching device plays a crucial role in achieving stable operation and high power transfer efficiency of the system.

[0116] An impedance matching device may be placed between the inverter (110) and each charging point group, for example, in the shared feeder line topology illustrated in FIGS. 5-7. In particular, when it is difficult to respond to various load conditions with only a fixed impedance matching network (IMN) on the transmitting side, a device providing a variable impedance matching function is effective.

[0117] A specific example of such an impedance matching device is a multi-cap bank structure. The multi-cap bank is composed of a plurality of capacitors having different capacitance values ​​and one or more switches (e.g., semiconductor switches or relays) that can change the connection combination of these capacitors. The opening and closing operations of these switches are controlled by an impedance matching control device. The impedance matching control device may be a part of the integrated control module (120) or may operate in conjunction with it, and detects the load status or reflected waves of the system in real time and controls the switches within the multi-cap bank so that optimal impedance matching is achieved, thereby varying the total capacitance value.

[0118] For example, when the number of charging vehicles connected to the system changes or the alignment of the vehicles changes, causing the load impedance to fluctuate, the impedance matching control device detects these changes and appropriately adjusts the capacitance of the multi-cap bank so that the wireless charger (110) always operates under optimal impedance conditions. This can be applied to all various shared power line topologies, such as series connection, parallel connection, or series-parallel mixed connection, thereby improving the overall performance of the system.

[0119] Through this active impedance matching device, the system of the present invention can always maintain high efficiency and stability even when multiple vehicles use wireless charging under various conditions.

[0120]

[0121] As described above, the integrated control module (120) performs various control functions to ensure stable and efficient operation of the wired / wireless power sharing system (100) of the present invention. Below, the main functions of the integrated control module (120) are described in detail, divided into power limitation, power distribution, and vehicle-specific adaptive control in that order.

[0122]

[0123] Power limiting function

[0124]

[0125] The integrated control module (120) ensures the safety of the entire system and each charging point (parking slot S), prevents system damage due to overload, and performs a power limiting function to ensure stable operation of the system within the allowable capacity of the electrical equipment. This power limiting function can be applied individually or integratedly to charging via the wired charging module (150) and charging via the wireless charging power supply module (130).

[0126]

[0127] (1) Power limit during wired charging

[0128] When charging an electric vehicle through a wired charging module (150) installed in each parking slot (S), the integrated control module (120) controls the wired charging module (150) so that it does not supply power exceeding the preset maximum allowable charging capacity. For example, if a specific wired charging module (150) is designed to be 7 kW, the integrated control module (120) controls the actual charging power so that it does not exceed this value.

[0129] To this end, the wired charging module (150) itself may include a physical overcurrent protection device (e.g., fuse, circuit breaker) or an electronic current limiting circuit, and the integrated control module (120) may detect the status of such protection devices or directly control and limit the charging current or power through communication with the wired charging module (150). In some embodiments, the integrated control module (120) may control multiple brake switches (e.g., relays) within the wired charging module (150) to cut off power or dynamically adjust the charging amount when the allowable capacity is exceeded. This power limitation prevents overheating or damage to individual wired charging modules and also contributes to protecting the battery of the connected electric vehicle.

[0130]

[0131] (2) Power limit during wireless charging

[0132] Even when charging an electric vehicle through a wireless charging power supply module (130), the integrated control module (120) performs a power limiting function in a similar manner. The main control target is the output of the wireless charger (110). The integrated control module (120) considers the power usage status of the entire system, the number of connected vehicles and the charging demand, and the maximum output capacity (e.g., 22 kW) of the wireless charger (110) itself to limit the total output power of the inverter or adjust the power supplied to each wireless charging power supply module (130).

[0133] For example, if multiple vehicles simultaneously request wireless charging and there is a possibility that the total allowable capacity of the system may be exceeded, the integrated control module (120) controls the output of the wireless charger (110) by setting an upper limit of the power allocated to each vehicle or each wireless charging power supply module (130). In particular, if the vehicle does not have a PWM (Pulse Width Modulation) power control function, the integrated control module (120) can perform PWM power control of the inverter by differentially limiting the maximum power supplied to each vehicle (e.g., up to 11 kW when charging 1 vehicle, up to 7 kW per vehicle when charging 3 vehicles simultaneously, etc.) according to a predefined policy, depending on the number of vehicles of the corresponding type being charged simultaneously.

[0134] In addition, the integrated control module (120) also protects the system by immediately reducing or cutting off the power supply when an abnormal condition such as overcurrent or overheating is detected in the wireless charger (110), the shared power supply line (142), or each wireless charging power supply module (130).

[0135]

[0136] Through individual or integrated power limiting functions for wired and wireless charging, the integrated control module (120) ensures that the wired and wireless power sharing system (100) of the present invention can operate safely and stably even under various environments and conditions.

[0137]

[0138] Power distribution function

[0139]

[0140] The integrated control module (120) plays a key role in efficiently and fairly distributing available power according to the charging needs of each electric vehicle and system conditions when the wired / wireless power sharing system (100) of the present invention provides wired or wireless charging services to multiple parking slots (S) within a limited total power supply. This is crucial for maximizing system utilization, preventing power overload or shortages in specific vehicles, and managing the burden on the overall power grid.

[0141]

[0142] (1) Distribution based on total available power

[0143] Basically, the integrated control module (120) determines the total available charging power supplied to the system (e.g., the sum of the maximum output capacity of the wireless charger (110) and the power allocable to wired charging), and distributes power to one or more electric vehicles currently requesting charging through wired or wireless charging based on this. At this time, the distribution priority or distribution amount can be determined by considering the battery condition (SOC) of each vehicle, the requested charging amount, the connection time, etc.

[0144]

[0145] (2) Dynamic redistribution of spare power when the vehicle leaves

[0146] When an electric vehicle completes charging in a parking slot (S) or leaves the slot due to a user interrupting charging, the power allocated to that vehicle is transferred to the system's surplus power. The integrated control module (120) immediately detects this surplus power and distributes it to other electric vehicles currently charging, increasing the charging speed, or to newly entered vehicles waiting. This dynamic redistribution function enables efficient operation without wasting system resources.

[0147]

[0148] (3) Securing and distributing power when new vehicles enter the market

[0149] When a new electric vehicle enters a parking slot (S) and requests charging via wired or wireless charging, the integrated control module (120) first checks whether there is any immediately allocable spare power within the system. If there is, it is given priority for allocation to the new vehicle. If there is insufficient immediately allocable spare power, the current charging power of other electric vehicles already charging can be temporarily reduced to a preset minimum guaranteed level or an appropriate level, and the resulting power can then be distributed to the new vehicle. This method ensures that all users have as equal a charging opportunity as possible.

[0150]

[0151] (4) Balanced power distribution between wired and wireless charging

[0152] When the system provides both wired and wireless charging functions, the integrated control module (120) can manage the power distribution balance between the two methods. For example, within the total available power limit of the entire system, the total power consumed by all wired charging currently in progress can be determined and the remaining available power can be distributed to wireless charging. Conversely, a method of determining and distributing the remaining power available for wired charging based on the total power used for wireless charging is also possible. This flexible distribution method can prevent excessive power consumption by a specific charging method and increase the efficiency of the entire system.

[0153]

[0154] (5) Differential and priority-based power distribution

[0155] Instead of distributing the same amount of power to all vehicles, the integrated control module (120) can differentially allocate charging power based on each vehicle's characteristics, charging demand, user rating, or pre-defined priority policies. For example, higher power can be allocated to vehicles requiring urgent charging or those subscribed to a specific rate plan, while lower power can be allocated to vehicles with a relatively lower charging urgency. This increases service satisfaction and enables diverse operational strategies.

[0156]

[0157] In this way, the integrated control module (120) plays a key role in providing stable and fair charging services to multiple users by utilizing limited power resources as efficiently as possible through an intelligent power distribution function that takes into account various situations.

[0158]

[0159] Various adaptive control functions for each vehicle

[0160]

[0161] The integrated control module (120) goes beyond simple power supply control and performs various adaptive control functions to proactively respond to the type, condition, or charging environment of an electric vehicle entering a parking slot (S) for charging, thereby providing optimal charging conditions. This plays a crucial role in maximizing charging efficiency, safety, and user convenience.

[0162]

[0163] (1) Adaptive control based on the vehicle's PWM (Pulse Width Modulation) power control capability

[0164] Among electric vehicles, some may be capable of controlling the amount of charge through PWM power control, while others may not. The integrated control module (120) identifies whether such PWM power control is possible through information received from the vehicle or pre-learned vehicle information, and accordingly adjusts the wireless charging operation by applying different current control methods or maximum charging power values ​​of the wireless charger (110).

[0165] For example, if there are only PWM power control capable vehicles, the integrated control module (120) can control the PWM current of the inverter by synthesizing the charging amount required by each vehicle. On the other hand, if there are only non-PWM controllable vehicles, the integrated control module (120) can control the PWM of the inverter by setting an upper limit of the maximum power that can be supplied to each vehicle according to the number of vehicles charging at the same time (e.g., up to 11 kW for 1 vehicle, up to 11 kW each for 2 vehicles, up to 7 kW each for 3 vehicles, etc.). If there are a mixture of PWM controllable and non-PWM controllable vehicles, the inverter can perform PWM power control so that the PWM controllable vehicles can be charged up to an agreed-upon capacity, and the non-PWM controllable vehicles can be charged up to a certain level (e.g., 11 kW) within the remaining capacity excluding the agreed-upon total amount from the entire system capacity.

[0166]

[0167] (2) Compatibility support and control according to wireless charging coil type

[0168] In wireless charging, the compatibility between the vehicle-side receiving coil (current collection coil) and the ground-side transmitting coil (power supply pad 132) has a significant impact on charging efficiency. The integrated control module (120) performs an adaptive control function to ensure optimal charging performance in response to various coil types.

[0169]

[0170] - In case of a homogeneous coil: If the power supply pad (132) and the vehicle's receiving coil have the same specifications or characteristics, the integrated control module (120) displays the vehicle's alignment status information identified through the position detection (PD) system to the user, and performs current or voltage control of the wireless charger (110) according to the actual vehicle's normal position or deviation position.

[0171] - In case of heterogeneous coils (when receiving coil information is recognized): If the type of receiving coil of the vehicle can be clearly known through vehicle information communication, etc., and this coil is identified as one of multiple heterogeneous coils that have been learned or defined in advance in the system, the integrated control module (120) applies a correction value (a pre-learned value or a value acquired through simulation) according to the type of receiving coil to the position detection information to provide more accurate alignment information to the user. Thereafter, the wireless charging operation is adjusted by optimizing the current or voltage control of the wireless charger (110) by comprehensively considering the corrected position information and the type of receiving coil.

[0172] - In case of heterogeneous coils (when the receiving coil information is unclear): In a situation where the type of receiving coil cannot be directly identified from the vehicle, the integrated control module (120) can estimate the type of receiving coil through various methods such as analyzing past charging history, input from the user (e.g., selecting a vehicle model), or learning the external characteristic information of the vehicle. The wireless charging operation is preferentially controlled by applying a correction value according to the type of receiving coil estimated in this way to the position detection information. If the difference between the predicted and actual charging amounts in this process significantly exceeds the pre-set tolerance range, this may mean that the coil type estimation is inaccurate or the vehicle alignment is insufficient. Therefore, the integrated control module (120) may provide the user with a notification requesting vehicle realignment and, if necessary, perform the coil type estimation and correction procedure again.

[0173]

[0174] (3) Charging support according to the vehicle's DC / DC converter status and alignment status

[0175] When an electric vehicle is parked at a location slightly off-center from the standard position of the charging pad (132) during wireless charging, the voltage induced in the vehicle-side current collector may be lowered, making normal charging difficult. The integrated control module (120) responds to such situations.

[0176] If a DC / DC converter with a boost function is installed inside the vehicle and a low induced voltage is detected, the integrated control module (120) controls the wireless charger (110) to continuously supply a stable base power so that the vehicle-side DC / DC converter can perform a stable boost operation and continue charging. This contributes to increasing the charging success rate even when the vehicle is not in an optimal position.

[0177]

[0178] (4) Inducing active charging amount control through communication with the vehicle

[0179] The integrated control module (120) can transmit information on the amount of charging power distributed to a specific electric vehicle according to a power distribution plan to the vehicle. The electric vehicle's current collector (or in-vehicle charging controller) that receives this information can self-control its own power by adjusting the width of the PWM (Pulse Width Modulation) signal, etc. based on the transmitted allowable power amount information, so that it can receive energy exactly equivalent to the corresponding amount of power from the system. In this way, by inducing the integrated control module (120) to cooperate with the vehicle and actively adjust the charging amount, more precise and efficient power use is enabled.

[0180]

[0181] Through these various vehicle-specific adaptive control functions, the integrated control module (120) enables the wired / wireless power sharing system (100) of the present invention to effectively respond to various types of electric vehicles and various charging environments and provide optimal charging services.

[0182]

[0183] The foregoing detailed description is not to be construed as limiting in any way and is to be considered illustrative. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. A shared system for providing wired and wireless power charging to multiple parking slots with one inverter. A wired charging module and / or a wireless charging power supply module placed in each parking slot; and, An integrated control module for controlling the operation of the above wired charging module and the above wireless charging power supply module. A wireless power charging sharing system including:

2. In claim 1, The above wireless charging power supply module has a shared switch box installed between the shared power supply line and the power supply pad to selectively supply power to the power supply pad. The above shared switch box is controlled by the integrated control module to supply or cut off power to the power supply pad, and has one or more switches inside. A wireless power charging sharing system characterized by:

3. In claim 2, each shared switch box, It has an electrical structure including a first switch and a second switch, which are each connected in series between two conductive lines of the shared power line and two conductive lines connected to the power pad, When the first switch is turned on and the second switch is turned off simultaneously by the control of the integrated control module, the current supplied to the corresponding power supply pad is cut off. A wireless power charging sharing system characterized by:

4. In claim 2, each shared switch box, It has an electrical structure that includes three switches, When the three switches are combined into a specific state defined in advance by the control of the integrated control module, the current supply to the corresponding power supply pad is cut off, and voltage is prevented from being applied to the power supply pad in a state where charging is not taking place. A wireless power charging sharing system characterized by:

5. In claim 1, The above multiple parking slots are divided into two or more groups, An impedance matching device is placed between each of the above groups and the inverter or between each of the above groups. A wireless power charging sharing system characterized by:

6. In claim 5, The above inverter and the above two or more groups are arranged in a tree-like structure. A wireless power charging sharing system characterized by:

7. In claim 5, The above inverter and the above two or more groups are arranged in a ring-tree hybrid structure. A wireless power charging sharing system characterized by:

8. In claim 5, The above inverter and the above two or more groups are arranged in a series-parallel hybrid structure. A wireless power charging sharing system characterized by:

9. In claim 1, the integrated control module, Controlling the charging power supplied to a specific parking slot through the above wired charging module or the above wireless charging power supply module so that it does not exceed a preset allowable capacity. A wireless power charging sharing system characterized by:

10. In claim 1, the integrated control module, Distributing the total available charging power supplied for wired or wireless charging of at least one electric vehicle requiring charging among the plurality of parking slots. A wireless power charging sharing system characterized by:

11. In claim 10, the integrated control module, When one electric vehicle completes charging and leaves the corresponding parking slot, the spare charging power secured from the total available charging power is additionally distributed to other electric vehicles charging in the plurality of parking slots. A wireless power charging sharing system characterized by:

12. In claim 10, the integrated control module, When a new electric vehicle enters a parking slot and requests charging, the remaining charging power within the total available charging power is allocated to the new electric vehicle. If the remaining charging power is insufficient, the charging power of other electric vehicles currently being charged is adjusted downward, and the secured power is distributed to the new electric vehicle. A wireless power charging sharing system characterized by:

13. In claim 10, the integrated control module, Determine either the total wired charging amount or the total wireless charging amount consumed in the above plurality of parking slots, and based on this, determine and distribute the remaining power amount that can be used for other types of charging within the total available charging power. A wireless power charging sharing system characterized by:

14. In claim 10, the integrated control module, The charging power amount to be distributed to each electric vehicle is differentially set and distributed according to the charging demand or pre-set priority of the electric vehicles parked in the above multiple parking slots. A wireless power charging sharing system characterized by:

15. In claim 1, the integrated control module, Based on vehicle information or charging status information received from an electric vehicle parked in at least one of the plurality of parking slots, individually controlling wired charging or wireless charging operation of the electric vehicle. A wireless power charging sharing system characterized by:

16. In claim 15, the integrated control module, If the above vehicle information includes information on whether the electric vehicle can be controlled by PWM (Pulse Width Modulation), the current control method of the inverter is changed according to whether the PWM control is possible or the wireless charging operation is controlled by applying a preset maximum charging power value. A wireless power charging sharing system characterized by:

17. In claim 15, the integrated control module, When the vehicle information includes wireless charging receiving coil type information of the electric vehicle, and the receiving coil type is identified as one of a plurality of heterogeneous coils learned or defined in advance, a correction value according to the identified receiving coil type is applied to the vehicle position detection information, and the wireless charging operation is controlled by performing current or voltage control of the inverter based on the corrected position information. A wireless power charging sharing system characterized by:

18. In claim 15, the integrated control module, If the type of wireless charging receiving coil of the electric vehicle cannot be clearly identified based on the vehicle information alone, the type of receiving coil is estimated using at least one of past charging history, input from a user, or learned external vehicle feature information, and a correction value according to the estimated type of receiving coil is applied to the vehicle position detection information to control the wireless charging operation. A wireless power charging sharing system characterized by:

19. In claim 18, the integrated control module, If the difference between the predicted charge amount and the actual charge amount exceeds the preset range, a notification is provided requesting vehicle realignment. A wireless power charging sharing system characterized by:

20. In claim 15, the integrated control module, When the electric vehicle moves away from the wireless charging pad and the induced voltage decreases, the DC / DC converter installed inside the electric vehicle performs a boost function to control the inverter to supply stable base power so that normal charging can be performed, thereby controlling the wireless charging operation. A wireless power charging sharing system characterized by:

21. In claim 15, the integrated control module, Information about the amount of charging power distributed to the electric vehicle is transmitted to the electric vehicle, and the electric vehicle's current collector adjusts the PWM (Pulse Width Modulation) width based on the information received, thereby inducing charging of the corresponding amount of power, thereby controlling the wireless charging operation. A wireless power charging sharing system characterized by:

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