Integrated system of wireless charging system, alternating-current wired charging system and direct-current wired charging system of electric vehicle

Abstract

The invention provides an integrated system of an electric vehicle wireless charging system, an alternating current wired charging system and a direct current wired charging system. The integrated system comprises a vehicle side integrated module and a ground integrated module. A first transmitting coil of the vehicle-side integrated module and a first receiving coil of the vehicle-side integrated module are strong coupling coils and serve as high-frequency transformers to realize an alternating-current wired charging function; a second transmitting coil of the ground integrated module and a second receiving coil of the ground integrated module are strong coupling coils and serve as high-frequency transformers to realize a direct-current wired charging function; the ground side is transmitted by the second transmitting coil and received by the first receiving coil, so that a wireless charging function is realized, and the second transmitting coil and the first receiving coil are in weak coupling; according to the technical scheme, the charging system is simplified through reasonable integration, the cost is reduced, the size of a charging part can be reduced, and the reliability can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile charging, and in particular to an integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system. Background Art

[0002] The power and steering of traditional fuel vehicles are controlled by the engine, gearbox, and steering gear. The operating curve is complex, involving a large number of parts, and the control accuracy is also low. Therefore, in today's vigorous development of autonomous driving, major car companies are vigorously developing electric vehicles, because the motors, brakes and other parts of electric vehicles can use signals for high-precision control, which is conducive to the deployment and implementation of autonomous driving.

[0003] The charging problem that electric vehicles cannot avoid is that the goal of charging is safety, speed and convenience. Therefore, there are currently three ways to charge electric vehicles: AC wired charging, DC wired charging and wireless charging. AC wired charging is also called slow charging. Single-phase or three-phase AC power is connected to the vehicle, and the on-board charger inside the vehicle converts the AC power into a suitable DC power to charge the high-voltage battery. The charging time is usually 6-8 hours. This technology is also called the on-board charging system (On-Board Charger, OBC). DC wired charging is also called fast charging. The ground charging pile converts AC to DC, and then directly connects to the vehicle's high-voltage battery through a cable for high-current charging. The charging time is usually 1-2 hours. However, the above two wired charging methods have the disadvantages of being inconvenient to charge when it rains and the interface is easily contaminated. Wireless charging (Wireless Power Transfer, WPT) can overcome the above problems and has the advantages of safety, speed and convenience.

[0004] Electric vehicles have three charging methods: AC wired charging, DC wired charging, and wireless charging. High-end models will have all three charging methods at the same time. The charging system structure diagram is as follows: Figure 4 A complete charging system will take up space in the car, bring more weight, and cost more. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide an integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system, which simplifies the charging system through reasonable integration, reduces costs, reduces the volume of the charging part, and improves reliability.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical solution: an integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system, including a vehicle-side integrated module and a ground integrated module; The vehicle-side integrated module includes a first EMI filter, a first PFC-containing rectifier, a first high-frequency inverter, a first compensation network, a first transmitting coil, a first receiving coil, a second compensation network, a first high-frequency rectifier and a first filtering circuit; the first EMI filter, the first PFC-containing rectifier, the first high-frequency inverter, the first compensation network and the first transmitting coil are connected in sequence, and the first receiving coil, the second compensation network, the first high-frequency rectifier and the first filtering circuit are connected in sequence; The ground integrated module includes a second EMI filter, a second PFC-containing rectifier, a second high-frequency inverter, a third compensation network, a second transmitting coil, a second receiving coil, a fourth compensation network, a second high-frequency rectifier and a second filtering circuit; the second EMI filter, the second PFC-containing rectifier, the second high-frequency inverter, the third compensation network and the second transmitting coil are connected in sequence, and the second receiving coil, the fourth compensation network, the second high-frequency rectifier and the second filtering circuit are connected in sequence; The first transmitting coil and the first receiving coil are strongly coupled coils, which act as high-frequency transformers to realize the AC wired charging function; the second transmitting coil and the second receiving coil are strongly coupled coils, which act as high-frequency transformers to realize the DC wired charging function; the ground side transmits through the second transmitting coil and receives through the first receiving coil to realize the wireless charging function, and the second transmitting coil and the first receiving coil are weakly coupled.

[0007] In a preferred embodiment, when AC wired charging is used, the AC power of the power grid charges the battery via a first EMI filter, a first PFC rectifier, a first high-frequency inverter, a first compensation network, a first transmitting coil, a first receiving coil, a second compensation network, a first high-frequency rectifier, and a first filter circuit; if V2G is used at this time, the energy flows from the battery to the power grid.

[0008] In a preferred embodiment, when DC wired charging is used, the AC power of the power grid is charged by the second EMI filter, the second PFC rectifier, the second high-frequency inverter, the third compensation network, the second transmitting coil, the second receiving coil, the fourth compensation network, the second high-frequency rectifier and the second filtering circuit. At this time, if V2G is used, the energy flows from the battery to the power grid.

[0009] In a preferred embodiment, when wireless charging is used, the AC power of the power grid is charged by the battery via the second EMI filter, the second PFC rectifier, the second high-frequency inverter, the third compensation network, the second transmitting coil, the first receiving coil, the second compensation network, the first high-frequency rectifier and the first filtering circuit. At this time, if V2G is used, the energy flows from the battery to the power grid.

[0010] In a preferred embodiment, when wireless charging is used, the AC wired charging inverter and its bus capacitor of the vehicle-side integrated module and the DC wired charging synchronous rectifier and its bus capacitor of the ground integrated module constitute an active impedance adjustment unit.

[0011] In a preferred embodiment, the first PFC-containing rectifier specifically uses a three-phase bridgeless PFC or a single-phase bridgeless PFC to convert AC power in the power grid into DC power; The first high-frequency inverter adopts a full-bridge inverter, and the rectifier from high-frequency AC to DC adopts a synchronous rectification structure or a diode uncontrolled rectification structure.

[0012] In a preferred embodiment, the second PFC-containing rectifier adopts a large-capacity three-phase bridgeless PFC, and the second high-frequency inverter adopts a full-bridge inverter.

[0013] In a preferred embodiment, the first compensation network, the second compensation network, the third compensation network and the fourth compensation network are series resonant networks.

[0014] In a preferred embodiment, the first PFC-containing rectifier and the second PFC-containing rectifier adopt a bridgeless PFC circuit; the first high-frequency inverter and the second high-frequency inverter adopt a full-bridge inverter.

[0015] In a preferred embodiment, the first compensation network, the second compensation network, the third compensation network and the fourth compensation network are LCC compensation networks, S compensation networks, SP compensation networks, LLC compensation networks, LCL compensation networks or CLC compensation networks.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the integrated system of the wireless charging system, on-board charging system and charging pile charging system of an electric vehicle proposed in the present invention can reduce the cost and weight of the charging system of the electric vehicle, help improve the energy efficiency of the electric vehicle, and at the same time, the simpler structure can improve reliability. The integrated coil structure proposed in the present invention can effectively replace the transformer and reduce the volume occupied by the vehicle charging system. The structure proposed in the present invention can also realize the V2G function, using the charged car as an energy storage device of the power grid to realize the peak load regulation function and ensure the reliability of the power grid. At the same time, the structure proposed in the present invention can also constitute an impedance matching circuit to ensure that the vehicle can still transmit electric energy stably when it is parked offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the functional block diagram of the AC wired charging OBC system; Figure 2 This is the principle block diagram of the DC wired charging system; Figure 3 This is the principle block diagram of the WPT charging system; Figure 4 The three structural principle block diagrams are AC wired charging system, DC wired charging system and wireless charging system for electric vehicles; Figure 5 This is a block diagram of the integrated structure principle of the AC wired charging system, DC wired charging system and wireless charging system for electric vehicles according to a preferred embodiment of the present invention; Figure 6 An energy flow diagram of the integrated structure of an AC wired charging system, a DC wired charging system and a wireless charging system for an electric vehicle according to a preferred embodiment of the present invention; Figure 7 The circuit topology of the integrated structure example of the AC wired charging system, the DC wired charging system and the wireless charging system for electric vehicles according to the preferred embodiment of the present invention; Figure 8 The AC wired charging topology of the preferred embodiment of the present invention; Fig. 9 A DC wired charging topology according to a preferred embodiment of the present invention; Fig.10 The wireless charging topology of the preferred embodiment of the present invention; Fig.11 The V2G power flow in the AC wired charging mode of the preferred embodiment of the present invention; Fig.12 The V2G power flow in the DC wired charging mode of the preferred embodiment of the present invention; Fig.13 The V2G power flow in the wireless charging mode of the preferred embodiment of the present invention; Fig.14 The active impedance adjustment unit structure of the preferred embodiment of the present invention; Fig.15 An integrated coil diagram of a stacked structure of a preferred embodiment of the present invention; Fig.16 This is a diagram of an integrated coil of a parallel-wound structure according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application; as used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0021] An integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system, comprising a vehicle-side integrated module and a ground integrated module; The vehicle-side integrated module includes a first EMI filter, a first PFC-containing rectifier, a first high-frequency inverter, a first compensation network, a first transmitting coil, a first receiving coil, a second compensation network, a first high-frequency rectifier and a first filtering circuit; the first EMI filter, the first PFC-containing rectifier, the first high-frequency inverter, the first compensation network and the first transmitting coil are connected in sequence, and the first receiving coil, the second compensation network, the first high-frequency rectifier and the first filtering circuit are connected in sequence; The ground integrated module includes a second EMI filter, a second PFC-containing rectifier, a second high-frequency inverter, a third compensation network, a second transmitting coil, a second receiving coil, a fourth compensation network, a second high-frequency rectifier and a second filtering circuit; the second EMI filter, the second PFC-containing rectifier, the second high-frequency inverter, the third compensation network and the second transmitting coil are connected in sequence, and the second receiving coil, the fourth compensation network, the second high-frequency rectifier and the second filtering circuit are connected in sequence; The first transmitting coil and the first receiving coil are strongly coupled coils, which act as high-frequency transformers to realize the AC wired charging function; the second transmitting coil and the second receiving coil are strongly coupled coils, which act as high-frequency transformers to realize the DC wired charging function; the ground side transmits through the second transmitting coil and receives through the first receiving coil to realize the wireless charging function, and the second transmitting coil and the first receiving coil are weakly coupled.

[0022] Specifically, in the prior art, the principle block diagram of the vehicle-mounted wired charging system OBC is as follows: Figure 1 As shown, the industrial frequency AC power of the power grid passes through the EMI filter to filter out differential and common mode interference, and the PWM rectifier with PFC power factor correction ensures that the grid-side current and voltage are in phase and are sinusoidal. The output is converted to DC, and then passes through a high-frequency inverter, a high-frequency transformer, and high-frequency rectification and filtering to charge the vehicle battery. It can be seen from the figure that the main components of the AC wired charging system are all on the vehicle, so it is called an on-board charger OBC. The principle of DC wired charging in the prior art is the same as that of the on-board wired charging system, except that its power is higher and the main components are located outside the vehicle. Its principle block diagram is shown as follows. Figure 2The principle block diagram of the wireless charging system WPT in the prior art is shown as follows Figure 3 As shown in the figure, the power grid's industrial frequency AC power is converted into DC through EMI filter and PWM rectification including PFC, and then converted into square wave AC power through high frequency inverter. The energy is then transmitted through the transmitting coil through the compensation network, received by the receiving coil on the vehicle, and then rectified and filtered after passing through the compensation network to charge the high-voltage battery. High-end models will have all three charging methods at the same time, so the charging system structure diagram is as follows Figure 4 shown.

[0023] This application integrates the AC wired charging system, the DC wired charging system, and the wireless charging system. The wireless charging system and the AC wired charging system share the receiving coil and the rectifier and inverter parts, and the DC wired charging system and the wireless charging system share the wireless charging transmitter, thereby simplifying the charging system structure, reducing costs, and compressing the volume of the charging part. The integrated technical block diagram of the electric vehicle wireless charging system, AC wired charging system, and DC wired charging system proposed in the present invention is shown in Figure 5.

[0024] When using AC wired charging, the AC power of the power grid charges the battery via the first EMI filter, the first PFC rectifier, the first high-frequency inverter, the first compensation network, the first transmitting coil, the first receiving coil, the second compensation network, the first high-frequency rectifier, and the first filter circuit; if V2G is used at this time, the energy flows from the battery to the power grid.

[0025] When using DC wired charging, the AC power of the power grid charges the battery via the second EMI filter, the second PFC rectifier, the second high-frequency inverter, the third compensation network, the second transmitting coil, the second receiving coil, the fourth compensation network, the second high-frequency rectifier and the second filtering circuit. At this time, if V2G is used, the energy flows from the battery to the power grid.

[0026] When wireless charging is used, the AC power of the power grid charges the battery via the second EMI filter, the second PFC rectifier, the second high-frequency inverter, the third compensation network, the second transmitting coil, the first receiving coil, the second compensation network, the first high-frequency rectifier and the first filtering circuit. At this time, if V2G is used, the energy flows from the battery to the power grid.

[0027] The energy flow of the integrated structure of the AC wired charging system, DC wired charging system and wireless charging system of the electric vehicle proposed by the present invention is as follows: Figure 6When using AC wired charging, the energy flows from the grid to the battery as shown in the path ① in the figure. If V2G is used at this time, the energy flows from the battery to the grid; when using DC wired charging, the energy flows from the grid to the battery as shown in the path ② in the figure. If V2G is used at this time, the energy flows from the battery to the grid; when using wireless charging, the energy flows from the grid to the battery as shown in the path ③ in the figure. If V2G is used at this time, the energy flows from the battery to the grid.

[0028] The implementation example of the integrated structure proposed by the present invention is as follows Figure 7 As shown. On the vehicle side, a three-phase bridgeless PFC or a single-phase bridgeless PFC is used to convert the 50Hz AC power in the grid into DC power. The high-frequency inverter uses a full-bridge inverter. The rectifier from high-frequency AC to DC uses a synchronous rectification structure. The compensation network uses series resonance to form a vehicle-mounted wired charging system. On the ground side, a larger capacity three-phase bridgeless PFC is used. The DC converter is composed of a full-bridge high-frequency inverter, a series resonance network, a coupling coil, and a synchronous rectification, and finally forms a DC wired charger. The transmitting coil on the ground side can also form a wireless charging system with the receiving coil on the vehicle side. Since both use a synchronous rectification structure, the bidirectional flow of power on the grid side and the vehicle side can be realized, realizing electric vehicle V2G, and using a large amount of electric vehicle energy storage as a buffer for the grid and renewable energy. Therefore, the isolated DC / DC converter of the vehicle-mounted charging system adopts a bidirectional full-bridge L-LLC structure, the isolated DC / DC converter of the ground wired DC charging system adopts an LLC resonant converter structure, and the wireless charging system adopts an SS (Series-Series) structure.

[0029] The circuit topology proposed by the present invention works as follows.

[0030] (1) AC wired charging mode: When the system uses AC wired charging, the circuit and power flow are as follows: Figure 8 As shown in the figure, the AC power is connected to the vehicle charging part through the AC charging gun to charge the high-voltage battery. The electric energy is charged into the high-voltage battery after the vehicle-side PFC, high-frequency inverter, AC wired charging transmitting coil, AC wired charging and wireless charging receiving coil, and synchronous rectification. The corresponding usage scenario at this time is an ordinary parking space with only AC power supply.

[0031] (2) DC wired charging mode: When the system uses DC wired charging, the circuit and power flow are as follows: Fig. 9 As shown in the figure, the mains is connected to the ground part, and the DC power is connected to the vehicle's high-voltage battery through the charging gun. The electric energy is charged into the high-voltage battery after ground-side PFC, high-frequency inverter, DC wired charging and wireless charging transmitting coil, DC wired charging receiving coil, and synchronous rectification. The usage scenario at this time is fast DC charging in a parking space with a charging pile.

[0032] (3) Wireless charging mode: When the system uses wireless charging, the circuit and power flow are as follows Fig.10 As shown in the figure, the mains electricity is connected to the ground part, and then passes through the coupling coil and the vehicle side synchronous rectification to the high-voltage battery. The electric energy passes through the ground side PFC, high-frequency inverter, DC wired charging and wireless charging transmitting coil, AC wired charging and wireless charging receiving coil, and synchronous rectification to charge the high-voltage battery. The usage scenario at this time is wireless charging in a parking space with wireless charging function.

[0033] (4) V2G can be realized in the three working modes of AC wired charging mode, DC wired charging mode, and wireless charging mode, and the vehicle can be used as an energy storage device for the power grid. In the V2G state, the power flows corresponding to the three modes are as follows: Fig.11 , Fig.12 , Fig.13 shown.

[0034] When using wireless charging, if the parking position of the vehicle is deviated, resulting in a horizontal offset between the transmitting coil and the receiving coil, it will affect the coupling coefficient of the two coils and cause the output voltage to be unstable. Fig.14 As shown, the present invention proposes that when the vehicle is wirelessly charged, the inverter and bus capacitor part of the AC wired charging on the vehicle side and the synchronous rectification and bus capacitor part of the DC wired charging on the ground side can be used to form an active impedance adjustment unit. Using this structure, the output can be stabilized.

[0035] The circuit topology proposed in the present invention can also be based on specific production and use requirements. In the rectification part, if V2G is not required, diode rectification can be used. The rectification circuit can adopt a half-wave rectification circuit, a bridge rectification circuit, etc. In the inverter part, a half-bridge circuit or a full-bridge circuit can be adopted, and both voltage-type inverter circuits and current-type inverter circuits can be adopted. In terms of the compensation circuit, LCC compensation, S compensation, SP compensation, LLC compensation, LCL compensation, CLC compensation, etc. can also be used.

[0036] There must be coupling between the wireless charging transmitting coil and the wireless charging receiving coil, so a semi-open magnetic circuit design is adopted. The two coils of AC wired charging need to have a coupling coefficient as high as possible. Similarly, the two coils of DC wired charging also need to have a coupling coefficient as high as possible. Only in this way can the transformer be replaced to achieve high-efficiency transmission. The coil design example of the integrated structure proposed by the present invention is as follows Fig.15 shown. Fig.15 The red coil corresponds to the blue coil Figure 6 The first transmitting coil (AC wired charging transmitting coil) and the first receiving coil (AC wired charging and wireless charging receiving coil) are strongly coupled. Fig.15 The green coil in the middle corresponds to the yellow coil Figure 6The second transmitting coil (DC wired charging and wireless charging transmitting coil) and the second receiving coil (DC wired charging receiving coil) are also strongly coupled.

[0037] The coil size is set to 300 mm × 300 mm and the charging distance is 100 mm ( Fig.15 The distance between the blue coil and the green coil in the middle), the distance between the two coils that constitute the transformer is 10mm. The simulation shows that the coupling coefficient of the transmitting coil and the receiving coil (i.e., the transformer) of the AC wired charging system and the DC wired charging system is 0.872, which is high enough to be equivalent to a tightly coupled transformer. In the simulation, the distance between the two coils is set larger, and the actual distance between the two coils can be smaller, then the coupling coefficient can be further improved. The coupling coefficient between the transmitting coil and the receiving coil of the wireless charging system is 0.251, which also meets the requirements of wireless charging.

[0038] The second example of the coil design of the integrated structure proposed by the present invention is as follows Fig.16 As shown in the figure, the coupling coefficient is improved by winding two coils in parallel, and two layers can be wound to increase the inductance. Using this structure, the coupling coefficient between the two coils constituting the transformer structure is 0.983, and the coupling coefficient between the two coils corresponding to the wireless charging system is 0.247. It can be seen that the use of a two-strand parallel winding structure can effectively improve the coupling coefficient between the coupling coils in both AC wired charging and DC wired charging systems.

Claims

1. An integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system, characterized in that: Including vehicle side integrated module and ground integrated module; The vehicle-side integrated module includes a first EMI filter, a first PFC-containing rectifier, a first high-frequency inverter, a first compensation network, a first transmitting coil, a first receiving coil, a second compensation network, a first high-frequency rectifier and a first filtering circuit; the first EMI filter, the first PFC-containing rectifier, the first high-frequency inverter, the first compensation network and the first transmitting coil are connected in sequence, and the first receiving coil, the second compensation network, the first high-frequency rectifier and the first filtering circuit are connected in sequence; The ground integrated module includes a second EMI filter, a second PFC-containing rectifier, a second high-frequency inverter, a third compensation network, a second transmitting coil, a second receiving coil, a fourth compensation network, a second high-frequency rectifier and a second filtering circuit; the second EMI filter, the second PFC-containing rectifier, the second high-frequency inverter, the third compensation network and the second transmitting coil are connected in sequence, and the second receiving coil, the fourth compensation network, the second high-frequency rectifier and the second filtering circuit are connected in sequence; The first transmitting coil and the first receiving coil are strongly coupled coils, which act as high-frequency transformers to realize the AC wired charging function; the second transmitting coil and the second receiving coil are strongly coupled coils, which act as high-frequency transformers to realize the DC wired charging function; the ground side transmits through the second transmitting coil and receives through the first receiving coil to realize the wireless charging function, and the second transmitting coil and the first receiving coil are weakly coupled.

2. The integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system according to claim 1, characterized in that: When using AC wired charging, the AC power of the power grid charges the battery via the first EMI filter, the first PFC rectifier, the first high-frequency inverter, the first compensation network, the first transmitting coil, the first receiving coil, the second compensation network, the first high-frequency rectifier, and the first filter circuit; if V2G is used at this time, the energy flows from the battery to the power grid.

3. The integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system according to claim 1, characterized in that: When using DC wired charging, the AC power of the power grid charges the battery via the second EMI filter, the second PFC rectifier, the second high-frequency inverter, the third compensation network, the second transmitting coil, the second receiving coil, the fourth compensation network, the second high-frequency rectifier and the second filtering circuit. At this time, if V2G is used, the energy flows from the battery to the power grid.

4. The integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system according to claim 1, characterized in that: When wireless charging is used, the AC power of the power grid charges the battery via the second EMI filter, the second PFC rectifier, the second high-frequency inverter, the third compensation network, the second transmitting coil, the first receiving coil, the second compensation network, the first high-frequency rectifier and the first filtering circuit. At this time, if V2G is used, the energy flows from the battery to the power grid.

5. The integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system according to claim 4, characterized in that: When wireless charging is used, the AC wired charging inverter and its bus capacitor of the vehicle-side integrated module and the DC wired charging synchronous rectification and its bus capacitor of the ground integrated module form an active impedance adjustment unit.

6. An integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system according to any one of claims 1 to 4, characterized in that: The first PFC rectifier specifically uses a three-phase bridgeless PFC or a single-phase bridgeless PFC to convert AC power in the power grid into DC power; The first high-frequency inverter adopts a full-bridge inverter, and the rectifier from high-frequency AC to DC adopts a synchronous rectification structure or a diode uncontrolled rectification structure.

7. An integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system according to any one of claims 1 to 4, characterized in that: The second PFC-containing rectifier adopts a large-capacity three-phase bridgeless PFC, and the second high-frequency inverter adopts a full-bridge inverter.

8. An integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system according to any one of claims 1 to 4, characterized in that: The first compensation network, the second compensation network, the third compensation network and the fourth compensation network adopt series resonant networks.

9. The integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system according to claim 1, characterized in that: The first PFC-containing rectifier and the second PFC-containing rectifier adopt a bridgeless PFC structure; the first high-frequency inverter and the second high-frequency inverter adopt a full-bridge inverter.

10. The integrated system of an electric vehicle wireless charging system, an AC wired charging system and a DC wired charging system according to claim 1, characterized in that: The first compensation network, the second compensation network, the third compensation network and the fourth compensation network are LCC compensation networks, S compensation networks, SP compensation networks, LLC compensation networks, LCL compensation networks or CLC compensation networks.

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