Charging system, control method, charging pile and control method of charging pile

Abstract

The invention discloses a charging system, a control method, a charging pile and a control method of the charging pile, relates to the technical field of charging piles, and aims to integrate three charging modes of direct current, alternating current and wireless charging into a whole, reduce the cost and reduce the mold opening cost. The charging system comprises a direct current charging module, an alternating current charging module, a wireless charging module and a charging control module. The charging control module is connected with the direct current charging module, the alternating current charging module and the wireless charging module so as to control at least one module to charge external to-be-charged equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a charging system and control method, a charging pile, and a charging pile control method. Background Art

[0002] An electric vehicle charging station is a facility for charging pure electric vehicles and hybrid vehicles. It can be fixed to the ground or wall and installed in parking lots or charging stations in public buildings and residential communities. It can charge various models of electric vehicles at different voltage levels. The input end of the charging station is directly connected to the AC power grid, and the output end is equipped with a charging plug for charging electric vehicles.

[0003] There are three types of charging stations available: DC, AC, and wireless. DC charging stations are only compatible with cars that use DC charging, AC charging stations are only compatible with cars that use AC charging, and wireless charging stations are only compatible with cars that use wireless charging. These three types of charging stations are independent and cannot communicate with each other, resulting in limited functionality. Furthermore, these limited functions require multiple different types of charging stations to meet demand, increasing space usage and wasting resources. Summary of the Invention

[0004] The purpose of the present invention is to provide a charging system and control method, a charging pile, and a control method for the charging pile, aiming to integrate three charging modes of DC, AC and wireless charging into one, reduce costs and reduce mold opening costs.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a charging system, which includes: a DC charging module, an AC charging module, a wireless charging module and a charging control module; the charging control module is respectively connected to the DC charging module, the AC charging module and the wireless charging module to control at least one of the modules to charge an external device to be charged.

[0007] Based on the above solution, some embodiments of the present application provide a charging system that combines DC charging, AC charging, and wireless charging. This charging system can simultaneously achieve DC charging, AC charging, and wireless charging through a charging control module. This can be achieved with only a single circuit and supports different combinations of DC charging, AC charging, and wireless charging, reducing costs and mold opening expenses. Furthermore, for users, vehicles with AC slow charging interfaces do not need to add charging port adapters, which increases vehicle compatibility and facilitates further promotion. The addition of wireless charging greatly improves charging convenience for users.

[0008] In some embodiments, the DC charging module includes: a first voltage conversion circuit and a first switching unit; the input end of the first voltage conversion circuit is electrically connected to the power supply end; the first switching unit is connected between the first voltage conversion circuit and the external device to be charged, and the first switching unit is also electrically connected to the charging control module; the charging control module is used to receive a first indication signal indicating DC charging and control the first switching unit to be turned on; the first voltage conversion circuit is used to convert the electrical signal provided by the power supply end into a DC charging signal.

[0009] In some embodiments, the DC charging module further includes: a voltage loop contactor; the voltage loop contactor is connected between the charging control module and the external device to be charged.

[0010] In some embodiments, the AC charging module includes: an AC transmission line and a second switch unit arranged on the AC transmission line; the second switch unit is also electrically connected to the charging control module; the charging control module is used to receive a second indication signal indicating AC charging and control the second switch unit to be turned on; the AC transmission line is used to transmit the AC power provided by the AC power supply end as an AC charging signal.

[0011] In some embodiments, the wireless charging module includes: a second voltage conversion circuit, a main side device unit and a power transmission controller; the input end of the second voltage conversion circuit is electrically connected to the power supply end, and the power transmission controller is connected between the second voltage conversion circuit and the main side device unit; the second voltage conversion circuit is used to convert the signal from the power supply end into a wireless charging signal; the charging control module is used to receive a third indication signal indicating wireless charging, and control the main side device unit to be connected to the external device to be charged.

[0012] In some embodiments, the wireless charging module includes: a primary side device unit and a power transmission controller; the power transmission controller is connected between the first voltage conversion circuit and the primary side device unit; the charging control module is used to receive a third indication signal indicating wireless charging and control the primary side device unit to be connected to the external device to be charged.

[0013] In some embodiments, the wireless charging module includes a Bluetooth module for communicating with an in-vehicle device.

[0014] In some embodiments, the charging control module includes: a control guide wave generating circuit; the control guide wave generating circuit is configured to emit a control guide function signal for monitoring the interactive function between the car and the charging pile.

[0015] In some embodiments, the control and guidance wave generation circuit includes: a voltage conversion subcircuit and a transient voltage suppression diode; the first end of the transient voltage suppression diode is connected to the positive output end of the voltage conversion subcircuit, and the second end of the transient voltage suppression diode is connected to the negative output end of the voltage conversion subcircuit; the positive output end of the voltage conversion subcircuit is used to output the control and guidance function signal.

[0016] In some embodiments, the charging control module includes an AC / DC charging protocol chip, a DC charging protocol chip, and a wireless charging protocol chip.

[0017] In a second aspect, the present application provides a control method for a charging system, which is applied to the above-mentioned charging system. A charging control module receives an instruction signal indicating charging and controls at least one of the DC charging module, the AC charging module, and the wireless charging module to conduct electricity with an external device to be charged.

[0018] Among them, the beneficial effects of the second aspect and its possible embodiments can refer to the first aspect and will not be repeated here.

[0019] In some embodiments, when the DC charging module includes a first switch unit, the charging control module receives a first instruction signal indicating DC charging and controls the first switch unit to be turned on.

[0020] In some embodiments, when the AC charging module includes a second switch unit provided on the AC transmission line, the charging control module receives a second indication signal indicating AC charging and controls the second switch unit to be turned on.

[0021] In some embodiments, when the wireless charging module includes a primary-side device unit, the charging control module receives a third instruction signal indicating wireless AC charging and controls the primary-side device unit to be connected to the external device to be charged.

[0022] In a third aspect, the present application provides a charging pile, including: the above-mentioned charging system.

[0023] Among them, the beneficial effects of the third aspect and its possible embodiments can refer to the first aspect and will not be repeated here.

[0024] In some embodiments, the charging pile further includes: a DC charging gun, an AC charging gun, ground equipment and a grid cable; the first end of the grid cable is electrically connected to the AC power supply end, and the second end of the grid cable is electrically connected to the charging system.

[0025] The DC charging gun is electrically connected to the output end of the DC charging module of the charging system; the AC charging gun is electrically connected to the output end of the AC charging module of the charging system; the primary side device unit of the wireless charging module of the charging system is arranged in the ground equipment, and the ground equipment is electrically connected to the second end of the grid cable.

[0026] In some embodiments, the DC charging gun and the AC charging gun are respectively arranged on opposite sides of the charging pile.

[0027] In some embodiments, there are multiple DC charging guns.

[0028] In some embodiments, the charging pile further includes: a box body; the AC charging gun can be wound and arranged inside the box body.

[0029] In some embodiments, a plurality of AC charging guns are disposed inside the box body.

[0030] In some embodiments, the box body can be pulled out and stored inside the charging pile.

[0031] In some embodiments, the case is removable.

[0032] In some embodiments, the charging pile further includes: a plurality of ground devices, which surround the charging pile; wherein vehicles can be docked on the ground devices.

[0033] In some embodiments, a pulley is provided at the bottom of the charging pile.

[0034] Fourthly, the present application provides a control method for a charging pile, applicable to the above-mentioned charging pile. The method includes waking up the charging pile and selecting a charging mode; the charging pile identifies the charging mode and enters the corresponding charging process; the charging pile charges according to the corresponding protocol; and the charging pile completes charging and retracts the corresponding charging device.

[0035] Among them, the beneficial effects of the fourth aspect and its possible embodiments can refer to the first aspect and will not be repeated here.

[0036] In some embodiments, when the charging pile includes a DC charging gun; the charging mode is selected as DC charging; the charging pile recognizes that the charging mode is DC charging and charges through the DC charging gun; the charging pile charges according to the first protocol.

[0037] In some embodiments, when the charging pile includes an AC charging gun; the charging mode is selected as AC charging; the charging pile recognizes that the charging mode is AC charging and charges through the AC charging gun; the charging pile charges according to the first protocol.

[0038] In some embodiments, when the charging pile includes ground equipment; the charging method is selected as wireless charging; the charging pile recognizes that the charging method is wireless charging and charges through the ground equipment; the charging pile charges according to the second protocol.

[0039] In some embodiments, after waking up the charging pile and before selecting the charging mode, the charging pile determines whether the waiting time is greater than the set time; if so, the charging pile stops working; if not, the charging pile continues to wait for receiving the indication signal.

[0040] In some embodiments, waking up the charging station includes: facial recognition, card swiping, code scanning and fingerprint recognition. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0042] Figure 1 A schematic diagram of a charging system provided in an embodiment of the present application;

[0043] Figure 2 A schematic diagram of a DC charging module provided in an embodiment of the present application;

[0044] Figure 3 A schematic diagram of an AC charging module provided in an embodiment of the present application;

[0045] Figure 4 A schematic diagram of a wireless charging module provided in an embodiment of the present application;

[0046] Figure 5 A schematic diagram of another wireless charging module provided in an embodiment of the present application;

[0047] Figure 6 A schematic diagram of a charging control module provided in an embodiment of the present application;

[0048] Figure 7 A side view of a charging pile provided in an embodiment of the present application;

[0049] Figure 8 A front view of a charging pile provided in an embodiment of the present application;

[0050] Figure 9 A schematic diagram of a box provided in an embodiment of the present application;

[0051] Figure 10 A top view of a charging pile provided in an embodiment of the present application;

[0052] Figure 11 A schematic diagram of a display screen provided in an embodiment of the present application;

[0053] Figure 12 A flowchart of charging a charging pile provided in an embodiment of the present application.

[0054] Reference numerals:

[0055] 1. DC charging module; 2. AC charging module; 3. Wireless charging module; 4. Charging control module; 5. Charging circuit contactor; 6. Vehicle controller; 7. Battery pack; 8. On-board charger; 9. Vehicle control device; 11. First voltage conversion circuit; 12. First switch unit; 13. Voltage circuit contactor; 14. Rectifier and boost subcircuit; 15. Power factor correction subcircuit; 22. Second switch unit; 31. Primary device unit; 32. Second voltage conversion circuit; 33. Bluetooth module; 34. Power transmission control Controller; 41. Control and guide wave generation circuit; 42. Voltage conversion sub-circuit; 43. Transient voltage suppression diode; 50. DC charging gun; 51. AC charging gun; 52. Ground equipment; 53. Grid cable; 54. Box body; 55. Conveyor belt; 56. Guard plate; 57. Motor control device; 58. Pulley; 59. Fingerprint recognition device; 60. Facial recognition device; 61. Smart card swiping device; 62. Emergency stop button; 63. Display screen; 100. Charging system; 110. External device to be charged; 200. Charging pile. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0057] In the description of the invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "back," "inner," "outer," and the like, indicating directions or positional relationships, are based on the directions or relative positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on the invention. Unless otherwise specified, the above-mentioned directions may be flexibly set in actual application, provided that the relative positional relationships shown in the accompanying drawings are met.

[0058] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0059] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "communicated" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be directly connected, indirectly connected through an intermediary, or internally connected between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0060] In embodiments of the present invention, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, article, or apparatus comprising the element.

[0061] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0062] An electric vehicle charging station is a facility for charging pure electric vehicles and hybrid vehicles. It can be fixed to the ground or wall and installed in parking lots or charging stations in public buildings and residential communities. It can charge various models of electric vehicles at different voltage levels. The input end of the charging station is directly connected to the AC power grid, and the output end is equipped with a charging plug for charging electric vehicles.

[0063] There are three types of charging stations available: DC, AC, and wireless. DC charging stations are only compatible with cars that use DC charging, AC charging stations are only compatible with cars that use AC charging, and wireless charging stations are only compatible with cars that use wireless charging. These three types of charging stations are independent and cannot communicate with each other, resulting in limited functionality. Furthermore, these limited functions require multiple different types of charging stations to meet demand, increasing space usage and wasting resources.

[0064] At the same time, in actual applications, there are also ways to integrate the AC and DC charging plugs on the vehicle side, so that the AC and DC charging ports are integrated into one charging interface. However, this application scenario is rare, it is not compatible with national standard charging piles, and charging is difficult.

[0065] Based on this, the embodiment of the present application provides a charging system. For example, Figure 1 As shown, the charging system 100 includes: a DC charging module 1 , an AC charging module 2 , a wireless charging module 3 and a charging control module 4 .

[0066] The DC charging module 1 is used to receive AC power and output a DC charging signal.

[0067] The AC charging module 2 is used to receive AC power and output an AC charging signal.

[0068] The wireless charging module 3 is used to receive alternating current and output a wireless charging signal.

[0069] The DC charging module 1 , the AC charging module 2 , and the wireless charging module 3 are electrically connected to the charging control module 4 , respectively. The charging control module 4 integrates the control functions of DC charging, AC charging, and wireless charging.

[0070] The charging control module is connected to the DC charging module 1 , the AC charging module 2 and the wireless charging module 3 respectively to control at least one of the modules to charge an external device to be charged.

[0071] It should be noted that DC charging, AC charging and wireless charging can be achieved simultaneously through the charging control module 4 .

[0072] The DC charging module 1 receives AC power under the control of the charging control module 4, and then converts the AC power into DC power, that is, a DC charging signal, and then outputs the DC charging signal to achieve DC charging.

[0073] In some embodiments, DC charging is fast charging, which is a faster charging speed.

[0074] The AC charging module 2 receives AC power, that is, an AC charging signal, under the control of the charging control module 4, and then outputs the AC charging signal to achieve AC charging.

[0075] In some embodiments, the AC power is single-phase power or three-phase power.

[0076] The wireless charging module 3 receives alternating current under the control of the charging control module 4, and then converts the alternating current into radio, that is, wireless charging signal, and then outputs the wireless charging signal to achieve wireless charging.

[0077] DC charging directly converts AC power to DC, providing high-current, high-voltage charging for electric vehicle batteries. This significantly speeds up charging compared to AC. Furthermore, DC charging utilizes energy more efficiently, reducing energy loss. This means users can charge more effectively, reducing energy waste. DC charging is suitable for locations requiring fast charging, such as highway service areas and public parking lots. These locations typically place higher demands on charging speed and energy efficiency, significantly shortening charging times and improving convenience.

[0078] AC charging, on the other hand, provides AC power to the electric vehicle's onboard charger, which then converts the power into electricity. This charging method eliminates the need for complex power conversion equipment, reducing energy loss, equipment costs, and failure rates. Furthermore, the charging power of AC charging stations generally ranges from 3.5 kW to 7 kW, with relatively stable current and voltage. This smooth charging process minimizes impact on the battery, helping to extend its lifespan.

[0079] AC charging is compatible with nearly all AC-capable electric vehicles on the market. This wide applicability means car owners don't have to worry about vehicle compatibility issues. Whether charging at home or using a public charging station, they can easily find the right charging method.

[0080] While AC charging is slower, it offers drivers greater flexibility in managing their charging schedules. They can charge their vehicles at night or during periods of low electricity prices, saving on electricity costs while avoiding the long waits during peak daytime charging times.

[0081] When it comes to wireless charging, automotive wireless charging technology eliminates the need to worry about tangled wires or plugging and unplugging cables. Some automotive wireless charging systems support automatic charging, automatically identifying and beginning charging when a device is placed in the charging area, eliminating the need for manual operation.

[0082] Wireless charging eliminates the risk of electric shock associated with loose or worn wires in traditional charging methods, improving driving safety. Wireless charging systems typically include multiple safety features, such as built-in overload and short-circuit protection, to ensure a stable and safe charging process.

[0083] Based on the above solution, some embodiments of the present application provide a charging system 100. This charging system 100 combines DC charging, AC charging, and wireless charging. This charging system 100 can simultaneously implement DC charging, AC charging, and wireless charging through a charging control module 4, requiring only a single circuit. This system supports different combinations of DC charging, AC charging, and wireless charging, reducing costs and mold opening fees. Furthermore, for users, vehicles equipped with an AC slow-charging interface do not require an additional charging port adapter, resulting in high vehicle compatibility and ease of further promotion. Furthermore, the addition of wireless charging significantly enhances charging convenience for users.

[0084] In some embodiments, as Figure 2 As shown, the DC charging module 1 includes: a first voltage conversion circuit 11 and a first switch unit 12 .

[0085] The input end of the first voltage conversion circuit 11 is electrically connected to the power supply end; the first switch unit 12 is connected between the first voltage conversion circuit 11 and the external device to be charged, and the first switch unit 12 is also electrically connected to the charging control module 4;

[0086] The charging control module 4 is used to receive a first instruction signal indicating DC charging and control the first switch unit 12 to be turned on. The first voltage conversion circuit 11 is used to convert an electrical signal provided by the power supply end into a DC charging signal.

[0087] In some embodiments, the power supply end may be a power grid, thereby providing AC power to the first voltage conversion circuit 11 . The electrical signal is also AC power, and the first voltage conversion circuit 11 converts the AC power provided by the power supply end into DC power.

[0088] For example, Figure 2 The power supply terminal provides AC power, and the AC power output by the power supply terminal is transmitted to the first voltage conversion circuit 11 through the live wire L and the neutral wire N. The dotted line between the live wire L and the neutral wire N indicates that when the power supply terminal is a three-phase power supply terminal, the voltage is transmitted through the other three live wires (L1, L2, L3) and the neutral wire N.

[0089] When the user selects the DC charging mode, the charging control module 4 controls the first switch unit 12 to be turned on after receiving the first instruction signal indicating DC charging, so that the DC charging signal can be output, thereby realizing DC charging.

[0090] In some embodiments, the first voltage conversion circuit 11 includes a rectification and boost sub-circuit 14 and a power factor correction sub-circuit 15 .

[0091] The rectifier and boost sub-circuit 14 and the power factor correction sub-circuit 15 are integrated in the first voltage conversion circuit 11. The rectifier and boost sub-circuit 14 is configured to convert alternating current into direct current and increase the voltage, while the power factor correction sub-circuit 15 is configured to optimize the current waveform to make it closer to a sine wave, so as to improve the efficiency and power factor of the circuit.

[0092] In some embodiments, the first switch unit 12 includes a first switch K1 and a second switch K2 . The external device to be charged 110 includes a charging circuit contactor 5 , a vehicle controller 6 , and a battery pack 7 .

[0093] The power supply provides an electrical signal to the DC charging module 1, which then converts the electrical signal into a suitable DC charging signal. When the first switch unit 12 and the charging circuit contactor 5 are turned on, the DC charging module 1 charges the battery pack 7.

[0094] The charging circuit contactor 5 includes a fifth switch K5 and a sixth switch K6 .

[0095] A first end of the first switch K1 is electrically connected to the first output end 111 of the first voltage conversion circuit 11 , a second end of the first switch K1 is electrically connected to a first end of the fifth switch K5 , and a second end of the fifth switch K5 is electrically connected to the first end 701 of the battery pack 7 .

[0096] A first end of the second switch K2 is electrically connected to the second output end 112 of the first voltage conversion circuit 11 , a second end of the second switch K2 is electrically connected to a first end of the sixth switch K6 , and a second end of the sixth switch K6 is electrically connected to the second end 702 of the battery pack 7 .

[0097] Among them, the control ends of the first switch K1 and the second switch K2 are electrically connected to the charging control module 4 (not shown in the figure); the control ends of the fifth switch K5 and the sixth switch K6 are electrically connected to the vehicle controller 6; the charging control module 4 controls the opening and closing of the first switch K1 and the second switch K2, and the vehicle controller 6 controls the opening and closing of the fifth switch K5 and the sixth switch K6.

[0098] In some embodiments, the DC charging module 1 further includes a voltage circuit contactor 13 .

[0099] The voltage loop contactor 13 is connected between the charging control module 4 and the external device to be charged 110. The voltage loop contactor 13 includes a third switch K3 and / or a fourth switch K4. The auxiliary power supply is connected to the voltage loop contactor 13 to supply power to it.

[0100] Reference Figure 2 The voltage circuit contactor 13 is connected between the charging control module 4 and the external device to be charged 110 , and is used to control the on-off between the charging control module 4 and the external device to be charged 110 .

[0101] In some embodiments, as Figure 3 As shown, the AC charging module 2 includes an AC transmission line and a second switch unit 22 arranged on the AC transmission line.

[0102] The second switch unit 22 is also electrically connected to the charging control module 4 ; the charging control module 4 is configured to receive a second instruction signal instructing AC charging and control the second switch unit 22 to be turned on.

[0103] The AC transmission line is used to transmit the AC power provided by the power supply end as an AC charging signal.

[0104] For example, when the user selects the AC charging mode, the charging control module 4 controls the second switch unit 22 to be turned on after receiving the second instruction signal indicating AC charging, so that the AC charging signal can be output, thereby realizing AC charging.

[0105] The second switch unit 22 includes a seventh switch K7 and an eighth switch K8.

[0106] The seventh switch K7 is connected between the power supply and the onboard charger, and the eighth switch K8 is connected between the power supply and the onboard charger. The control ends of the seventh and eighth switches K7 and K8 are electrically connected to a charging control module (not shown). The charging control module controls the switching of the seventh and eighth switches K7 and K8. When the seventh and eighth switches K7 and K8 are on, the power supply supplies power to the onboard charger 8 via the AC charging module.

[0107] An on-board charger (OBC) is a charger permanently installed on an electric vehicle, capable of safely and automatically fully charging the vehicle's power battery. Based on data provided by the battery management system, the charger dynamically adjusts charging current and voltage parameters, executing corresponding actions to complete the charging process.

[0108] The main function of the on-board charger is to convert AC power into DC power and then transmit the DC power to the battery pack 7 for charging.

[0109] like Figure 3 As shown, a first resistor R1 , a second resistor R2 , a third resistor R3 , a fourth resistor R4 , a fifth resistor R5 , a first trigger S1 , a second trigger S2 , and a third trigger S3 are further provided between the AC charging module 2 and the external device to be charged 110 .

[0110] A first end of the first trigger S1 is electrically connected to the signal end of the charging control module, a second end of the first trigger S1 is electrically connected to the first end of the first resistor R1, and a second end of the first resistor R1 is electrically connected to the detection end of the charging control module.

[0111] The first end of the second trigger S2 is electrically connected to the onboard charger. The second end of the second trigger S2 is electrically connected to the first end of the second resistor R2, which is electrically connected to the second end of the first resistor R1. The first end of the third resistor R3 is electrically connected to the first end of the second trigger S2, and the second end of the third resistor R3 is electrically connected to the second end of the second resistor R2. The first end of the third resistor R3 is also electrically connected to ground, and the second end of the third resistor R3 is also electrically connected to the first end of the vehicle control device 9.

[0112] The first end of the third trigger S3 is electrically connected to the ground end, the second end of the third trigger S3 is electrically connected to the first end of the fifth resistor R5, the second end of the fifth resistor R5 is electrically connected to the second end of the vehicle control device 9; the fourth resistor R4 is connected in parallel with the third trigger S3.

[0113] Among them, the first trigger S1 is the pulse modulation signal switching switch of the charging control module; the second trigger S2 is the control guide switch of the external device to be charged 110; the third trigger S3 is the normally closed switch inside the plug of the external device to be charged 110; the first resistor R1 is the control guide resistor of the charging control module; the second resistor R2 and the third resistor R3 are the control guide resistors inside the external device to be charged 110; the fourth resistor R4 and the fifth resistor R5 are the control guide resistors inside the plug.

[0114] In some embodiments, as Figure 4 As shown, the wireless charging module 3 includes: a primary-side device unit 31 , a second voltage conversion circuit 32 and a power transmission controller 34 .

[0115] An input terminal of the second voltage conversion circuit 32 is electrically connected to a power supply terminal, and the power transmission controller 34 is connected between the second voltage conversion circuit 32 and the primary-side device unit 31 .

[0116] The second voltage conversion circuit 32 is used to convert the signal from the power supply end into a wireless charging signal.

[0117] The charging control module 4 is configured to receive a third instruction signal instructing wireless charging, and control the primary-side device unit 31 to be connected to the external device to be charged 110 .

[0118] The primary-side device unit 31 is a primary coil, and the external device to be charged 110 is provided with a corresponding secondary coil.

[0119] Figure 4The power supply end provides AC power, and a second voltage conversion circuit 32 is required to convert the AC power into DC power, and then transmit the DC power to the primary side device unit 31 via the power sending controller 34. Then the primary side device unit 31 is wirelessly connected to the secondary side coil, thereby transmitting the DC power to the secondary side coil, and then transmitted to the on-board communication control unit and battery pack 7 via the power receiving controller to complete wireless charging.

[0120] In some embodiments, as Figure 5 As shown, the wireless charging module 3 includes: a primary side device unit 31 and a power transmission controller 34 .

[0121] The power transmission controller 34 is connected between the first voltage conversion circuit 11 and the primary side device unit 31 ; the charging control module 4 is used to receive a third instruction signal indicating wireless charging and control the primary side device unit 31 to be connected to the external device to be charged 110 .

[0122] For example, when the user selects wireless charging, the charging control module 4 receives the third indication signal indicating AC charging and controls the primary side device unit 31 to be connected to the secondary side coil, so that the wireless charging signal can be output, thereby realizing wireless charging.

[0123] Figure 5 The power supply in the example provides AC power, which is converted to DC power by the first voltage conversion circuit 11. This DC power is then transmitted to the primary device unit 31 via the power transmission controller 34. The primary device unit 31 then wirelessly connects to the secondary coil, transmitting the DC power to the secondary coil. This power is then transmitted to the vehicle communication control unit and battery pack 7 via the power reception controller, completing wireless charging. In other words, the wireless charging module and the DC charging module can share the same first voltage conversion circuit 11.

[0124] In some embodiments, as Figure 5 As shown, the wireless charging module 3 further includes a Bluetooth module 33 for communicating with the vehicle-mounted equipment.

[0125] For example, the Bluetooth module 33 is used to connect to the Bluetooth in the vehicle-mounted device. After the matching is successful, wireless charging can be performed.

[0126] In some embodiments, as Figure 6 As shown, the charging control module 4 includes: a control and guidance wave generating circuit 41 .

[0127] The control guidance wave generating circuit 41 is configured to generate a control guidance function signal for monitoring the interaction function between the vehicle and the charging pile 200 .

[0128] In some embodiments, the control-guided wave generating circuit 41 includes a voltage conversion sub-circuit 42 and a transient voltage suppressor diode 43 .

[0129] A first end of the transient voltage suppression diode 43 is connected to the positive output terminal Vo+ of the voltage conversion sub-circuit 42 , and a second end of the transient voltage suppression diode 43 is connected to the negative output terminal Vo− of the voltage conversion sub-circuit 42 .

[0130] The transient voltage suppressor diode 43 is a TVS diode. The TVS diode can withstand large transient power and protect the circuit from damage caused by transient overvoltage.

[0131] The positive output terminal of the voltage conversion sub-circuit 42 is used to output a control and guidance function signal.

[0132] For example, AC power flows through the charging plug and socket and enters the onboard charger, which converts the AC power to DC power to charge the power battery. The control and guidance function signal, acting as a control and guidance signal, is used for signal transmission or communication between the electric vehicle and the electric vehicle power supply equipment. To address the issue of coupled AC power, a TVS diode is added to shunt and clamp surge voltage, keeping the voltage within a certain range. This prevents voltage surges on the control and guidance wave generator circuit 41 from burning out the circuit and causing the inability to detect valid control and guidance function signals.

[0133] In some embodiments, the car starts charging after detecting that the control pilot function signal drops from 12V to 9V, then to 6V, and becomes stable.

[0134] In some embodiments, the charging control module 4 includes an AC / DC charging protocol chip, a DC charging protocol chip, and a wireless charging protocol chip.

[0135] In summary, the control method of the charging system is as follows: the charging control module 4 receives an instruction signal indicating charging, and controls at least one of the DC charging module 1, the AC charging module 2 and the wireless charging module 3 to be connected to the external device to be charged 110.

[0136] Specific process: The charging control module 4 receives a first instruction signal indicating DC charging and controls the first switch unit 12 to conduct. The charging control module 4 receives a second instruction signal indicating AC charging and controls the second switch unit 22 to conduct. The charging control module 4 receives a third instruction signal indicating wireless AC charging and controls the primary-side device unit to conduct between the device to be charged and the external device.

[0137] Second, as Figure 7 As shown, the present application provides a charging pile 200, including: the above-mentioned charging system 100 (not shown in the figure).

[0138] Reference Figure 7 and Figure 8In some embodiments, the charging pile 200 further includes: a DC charging gun 50, an AC charging gun 51, ground equipment 52 and a grid cable 53; a first end of the grid cable 53 is electrically connected to the AC power supply end, and a second end of the grid cable 53 is electrically connected to the charging system 100.

[0139] The DC charging gun 50 is electrically connected to the output end of the DC charging module 1 of the charging system 100; the AC charging gun 51 is electrically connected to the output end of the AC charging module 2 of the charging system 100; the primary side device unit 31 of the wireless charging module 3 of the charging system 100 is arranged in the ground equipment 52, and the ground equipment 52 is electrically connected to the second end of the grid cable 53.

[0140] In other words, one charging pile 200 can realize DC charging, AC charging and wireless charging at the same time, reducing the internal physical space of the charging pile 200 and lowering the cost of configuring the charging pile 200 with both a DC charging pile 200 and an AC charging pile 200.

[0141] Reference Figure 8 In some embodiments, the DC charging gun 50 and the AC charging gun 51 are respectively arranged on opposite sides of the charging pile 200.

[0142] In some embodiments, there are multiple DC charging guns 50 .

[0143] In this way, multiple vehicles can share one DC charging gun 50, which can further improve the overall charging efficiency.

[0144] In some embodiments, the charging pile 200 further includes: a box body 54 ; and the AC charging gun 51 can be wound and arranged inside the box body 54 .

[0145] The box body 54 can be pulled out and stored inside the charging pile 200. In this way, the AC charging gun 51 is hidden, which can prevent the cable from aging and damage.

[0146] Reference Figure 9 The box body 54 further includes a conveyor belt 55, a protective plate 56, and a motor control device 57. The AC charging gun 51 is connected to the conveyor belt 55, the conveyor belt 55 is connected to the protective plate 56, and the motor control device 57 is connected to the conveyor belt 55.

[0147] The motor control device 57 controls the extension and contraction of the AC charging gun 51 through the conveyor belt 55. The guard plate 56 serves to fix the conveyor belt 55.

[0148] In some embodiments, a plurality of AC charging guns 51 are disposed inside the box body 54 .

[0149] In some embodiments, the case 54 is removable.

[0150] For example, if the user's vehicle cannot be parked near the charging pile 200 , the box body 54 can be removed from the charging pile 200 and then moved to the vicinity of the user's vehicle, connected to a power source, and charged.

[0151] Reference Figure 10 The charging pile 200 further includes: a plurality of ground equipment 52 , which surrounds the charging pile 200 ; wherein vehicles can be parked on the ground equipment 52 .

[0152] In this way, one charging pile 200 can charge multiple vehicles at the same time, saving more space resources and solving the problem of the shortage of parking spaces in charging stations matching charging piles 200.

[0153] In some embodiments, a pulley 58 is provided at the bottom of the charging pile 200 .

[0154] In actual applications, through the pulley 58, the ground fixing method of the charging pile 200 is not limited to fixed, and can be mobile, foldable, or other forms; it has basic mobility to facilitate various practical needs.

[0155] Reference Figure 8 and Figure 11 In some embodiments, the charging pile 200 is provided with a display screen 63. The display screen 63 is provided with multiple working interfaces for displaying charging information.

[0156] The charging pile 200 is also provided with: a fingerprint recognition device 59 , a facial recognition device 60 and a smart card swiping device 61 .

[0157] The fingerprint recognition device 59 is configured to wake up the working interface when receiving a fingerprint signal; the facial recognition device 60 is configured to wake up the working interface when receiving a facial signal; and the smart card swiping device 61 is configured to wake up the working interface when receiving an NFC signal.

[0158] Charging information includes: fingerprint recognition, facial recognition, NFC card recognition, DC charging, AC charging, wireless charging, electricity price, consumption, and charging power.

[0159] The charging pile 200 is further provided with an emergency stop button 62 ; when the emergency stop button 62 is pressed, the charging pile 200 stops working.

[0160] like Figure 12 As shown, Figure 12 Flowchart for charging the charging pile:

[0161] S101, wake up the charging pile by swiping a card, scanning a code, facial recognition, fingerprint recognition, etc.

[0162] S102: The user selects a charging method according to the vehicle configuration.

[0163] S103: Whether DC fast charging is enabled.

[0164] If yes, go to step S108; if no, go to step S104.

[0165] S104: Whether AC slow charging is used.

[0166] If yes, go to step S110; if no, go to step S105.

[0167] S105: Whether to perform wireless charging.

[0168] If yes, go to step S113; if no, go to step S106.

[0169] S106: Whether the waiting time is greater than the set time.

[0170] If yes, go to step S107; if no, continue to determine whether the waiting time is greater than the set time.

[0171] S107, charging ends.

[0172] S108. The charging pile is transformed into a DC fast charging pile.

[0173] S109: Identify the signal and enter the DC fast charging process.

[0174] S110. The charging pile is transformed into an AC slow charging pile.

[0175] S111. Identify the signal and enter the AC slow charging process.

[0176] S112: Charging according to the first protocol.

[0177] Both DC fast charging and AC slow charging are charged according to the first protocol.

[0178] S113. The charging pile is transformed into a wireless charging pile.

[0179] S114: Confirm the connection and enter the wireless charging process.

[0180] S115: Charging according to the second protocol.

[0181] S116: Charging is completed and the deformation device is retracted.

[0182] Among them, the first protocol refers to the GB / T18487.1 protocol, and the second protocol refers to the GB / T38775.2 protocol.

[0183] In other words, the user first needs to wake up the charging station by swiping a card, scanning a QR code, using facial recognition, or fingerprint recognition. Then, they select the charging method, which can be done through the touch screen. The charging station identifies the charging method and enters the corresponding charging process: DC fast charging, AC slow charging, or wireless charging. The charging station charges according to the corresponding protocol (GB / T18487.1 or GB / T38775.2). If the user wakes up the charging station and it does not receive a charging signal within the set time, the charging station stops working and needs to be woken up again to continue use.

[0184] In some embodiments, the charging pile in the present application can also deeply integrate the control circuit, power supply circuit and thermal management circuit, and realize box sharing, further reducing costs.

[0185] In summary, some embodiments of the present application provide a charging pile, in which the charging system combines DC charging, AC charging and wireless charging together, and can realize DC charging, AC charging and wireless charging at the same time through the charging control module. Only one circuit is needed to realize it, and it supports DC charging, AC charging and wireless charging in different combinations; it reduces costs and mold opening costs. At the same time, for users, vehicles with AC slow charging interfaces do not need to add charging port adapters, and the vehicle adaptability is high, which is convenient for further promotion. The newly added wireless charging greatly improves the convenience of charging for users. In addition, the charging pile integrates DC charging guns, AC charging guns and ground equipment together, and can realize DC charging, AC charging and wireless charging at the same time. The three charging methods are realized through one charging pile, which can effectively utilize space resources and solve the problem of shortage of parking spaces at charging stations. It has the advantages of diversified functions and green energy saving.

[0186] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0187] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A charging system (100), characterized in that: include: DC charging module (1); AC charging module (2); a wireless charging module (3); and A charging control module (4) is connected to the DC charging module (1), the AC charging module (2), and the wireless charging module (3) respectively to control at least one of the modules to charge an external device to be charged (110).

2. The charging system (100) according to claim 1, characterized in that The DC charging module (1) comprises: a first voltage conversion circuit (11) and a first switch unit (12); The input end of the first voltage conversion circuit (11) is electrically connected to the power supply end; the first switch unit (12) is connected between the first voltage conversion circuit (11) and the external device to be charged (110), and the first switch unit (12) is also electrically connected to the charging control module (4); The charging control module (4) is used to receive a first indication signal indicating DC charging and control the first switch unit (12) to be turned on; The first voltage conversion circuit (11) is used to convert the electrical signal provided by the power supply end into a DC charging signal.

3. The charging system (100) according to claim 2, characterized in that The DC charging module (1) further comprises: a voltage circuit contactor (13); The voltage loop contactor (13) is connected between the charging control module (4) and the external device to be charged.

4. The charging system (100) according to claim 1, characterized in that The AC charging module (2) comprises: an AC transmission line and a second switch unit (22) arranged on the AC transmission line; The second switch unit (22) is also electrically connected to the charging control module (4); The charging control module (4) is used to receive a second instruction signal indicating AC charging and control the second switch unit (22) to be turned on; The AC transmission line is used to transmit the AC power provided by the power supply end as an AC charging signal.

5. The charging system (100) according to claim 1, characterized in that The wireless charging module (3) comprises: a second voltage conversion circuit (32), a primary side device unit (31) and a power transmission controller (34); The input end of the second voltage conversion circuit (32) is electrically connected to the power supply end, and the power transmission controller (34) is connected between the second voltage conversion circuit (32) and the primary side device unit (31); The second voltage conversion circuit (32) is used to convert the signal at the power supply end into a wireless charging signal; The charging control module (4) is used to receive a third indication signal indicating wireless charging, and control the primary side device unit (31) to be connected to the external device to be charged (110).

6. The charging system (100) according to claim 2, characterized in that The wireless charging module (3) comprises: a primary side device unit (31) and a power transmission controller (34); The power transmission controller (34) is connected between the first voltage conversion circuit (11) and the primary side device unit (31); The charging control module (4) is used to receive a third indication signal indicating wireless charging, and control the primary side device unit (31) to be connected to the external device to be charged (110).

7. The charging system (100) according to claim 5 or 6, characterized in that The wireless charging module (3) comprises a Bluetooth module (33) for communicating with the external device to be charged (110).

8. The charging system (100) according to any one of claims 1 to 6, characterized in that: The charging control module (4) comprises: a control-guided wave-generating circuit (41); The control guidance wave generating circuit (41) is configured to emit a control guidance function signal for monitoring the interactive function between the car and the charging pile (200).

9. The charging system (100) according to claim 8, characterized in that The control-guided wave generating circuit (41) includes: a voltage conversion subcircuit (42) and a transient voltage suppression diode (43); The first end of the transient voltage suppression diode (43) is connected to the positive output end of the voltage conversion sub-circuit (42), and the second end of the transient voltage suppression diode (43) is connected to the negative output end of the voltage conversion sub-circuit (42); The positive output terminal of the voltage conversion subcircuit (42) is used to output a control and guidance function signal.

10. The charging system (100) according to claim 1, characterized in that The charging control module (4) comprises an AC / DC charging protocol chip, a DC charging protocol chip and a wireless charging protocol chip.

11. A control method for a charging system, characterized in that: Applicable to a charging system according to any one of claims 1 to 10; The charging control module (4) receives an indication signal indicating charging, and controls at least one of the DC charging module (1), the AC charging module (2), and the wireless charging module (3) to be connected to the external device to be charged (110).

12. The control method according to claim 11, characterized in that: In the case where the DC charging module (1) includes a first switch unit (12); The charging control module (4) receives a first indication signal indicating direct current charging and controls the first switch unit (12) to be turned on.

13. The control method according to claim 11, characterized in that: In a case where the AC charging module (2) includes a second switch unit (22) provided on the AC transmission line; The charging control module (4) receives a second indication signal indicating AC charging and controls the second switch unit (22) to be turned on.

14. The control method according to claim 11, characterized in that: In the case where the wireless charging module (3) includes a primary side device unit (31); The charging control module (4) receives a third indication signal indicating wireless AC charging, and controls the primary side device unit (31) to be connected to the external device to be charged (110).

15. A charging pile (200), characterized in that: include: The charging system (100) according to any one of claims 1 to 10.

16. The charging pile (200) according to claim 15, characterized in that: The charging pile (200) further includes: a DC charging gun (50), an AC charging gun (51), ground equipment (52) and a grid cable (53); A first end of the grid cable (53) is electrically connected to a power supply terminal, and a second end of the grid cable (53) is electrically connected to the charging system (100); The DC charging gun (50) is electrically connected to the output end of the DC charging module (1) of the charging system (100); The AC charging gun (51) is electrically connected to the output end of the AC charging module (2) of the charging system (100); The primary side device unit (31) of the wireless charging module (3) of the charging system (100) is arranged in the ground device (52), and the ground device (52) is electrically connected to the second end of the grid cable (53).

17. The charging pile (200) according to claim 16, characterized in that The DC charging gun (50) and the AC charging gun (51) are respectively arranged on opposite sides of the charging pile (200).

18. The charging pile (200) according to claim 16, characterized in that: There are multiple DC charging guns (50).

19. The charging pile (200) according to claim 15, characterized in that: The charging pile (200) further comprises: a box body (54); the AC charging gun (51) can be arranged in a wound manner inside the box body (54).

20. The charging pile (200) according to claim 19, characterized in that A plurality of AC charging guns (51) are arranged inside the box body (54).

21. The charging pile (200) according to claim 19, characterized in that: The box body (54) can be pulled out and stored inside the charging pile (200).

22. The charging pile (200) according to claim 19, characterized in that The box body (54) is detachable.

23. The charging pile (200) according to claim 15, characterized in that The charging pile (200) further includes: a plurality of ground devices (52), wherein the plurality of ground devices (52) surround the charging pile (200); Wherein, vehicles can be parked on the ground equipment (52).

24. The charging pile (200) according to any one of claims 15 to 22, characterized in that: A pulley (58) is provided at the bottom of the charging pile (200).

25. A method for controlling a charging pile, characterized in that: Applicable to a charging pile (200) as claimed in any one of claims 15 to 24; Waking up the charging pile (200) and selecting a charging mode; The charging pile (200) identifies the charging mode and enters the corresponding charging process; The charging pile (200) charges according to a corresponding protocol; The charging pile (200) completes charging and retracts the corresponding charging device.

26. The control method according to claim 25, characterized in that: In the case where the charging pile (200) includes a DC charging gun (50); Selecting the charging mode as DC charging; The charging pile (200) identifies that the charging mode is DC charging and charges via the DC charging gun (50); The charging pile (200) charges according to a first protocol.

27. The control method according to claim 25, characterized in that: In the case where the charging pile (200) includes an AC charging gun (51); Selecting AC charging as the charging method; The charging pile (200) identifies that the charging mode is AC charging and charges via the AC charging gun (51); The charging pile (200) charges according to a first protocol.

28. The control method according to claim 25, characterized in that: In the case where the charging pile (200) includes ground equipment; Select wireless charging as the charging method; The charging pile (200) identifies that the charging method is wireless charging and charges via the ground device (52); The charging pile (200) charges according to a second protocol.

29. The control method according to claim 25, characterized in that: After waking up the charging pile (200) and before selecting a charging mode; The charging pile (200) determines whether the waiting time is greater than a set time; If yes, the charging pile (200) stops working; if no, the charging pile (200) continues to wait for receiving the indication signal.

30. The control method according to claim 25, characterized in that: Waking up the charging pile (200) includes: facial recognition, card swiping, code scanning and fingerprint recognition.

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