Charging pile system and charging system

Abstract

The utility model relates to a kind of charging pile system and charging system, wherein, the charging pile system includes: pile body, charging gun and ground end charging device, and pile body is respectively connected with charging gun, ground end charging device electrically;Charging gun is used to be inserted with the first vehicle end charging device of vehicle side, to charge vehicle;Ground end charging device is used to be inserted with the second vehicle end charging device of vehicle bottom, to charge vehicle;Pile body is used to establish the charging loop between pile body and vehicle when determining that charging gun and the first vehicle end charging device are successfully inserted, or, when determining that ground end charging device and the second vehicle end charging device are successfully inserted, and vehicle is charged by charging loop. In this way, by simultaneously configuring charging gun and ground end charging device, the same charging pile can charge vehicle through side charging gun, and also can charge vehicle through ground end charging device, to be compatible with multiple charging access methods, to improve charging convenience.

Description

Technical Field

[0001] This utility model relates to the field of vehicle charging technology, and in particular to a charging pile system and a charging system. Background Technology

[0002] With the increasing popularity of new energy vehicles, users are placing higher demands on the convenience and applicability of charging equipment. Currently, common charging equipment mainly includes charging piles and charging guns that are connected to the charging piles via cables. The charging guns are usually configured to match the charging interface on the side of the vehicle. Users manually operate the charging gun to plug it into the charging interface on the side of the vehicle to charge it.

[0003] However, existing charging devices can only charge by plugging the charging gun into the charging port on the side of the vehicle, which is a single charging method. There is an urgent need to provide a charging device that can be compatible with multiple charging access methods.

[0004] There is currently no effective solution to the problem that existing charging devices are incompatible with multiple charging access methods. Utility Model Content

[0005] Therefore, it is necessary to provide a charging pile system and charging system that can be compatible with multiple charging access methods, in order to address the problem that existing charging equipment cannot be compatible with multiple charging access methods.

[0006] Firstly, this utility model provides a charging pile system, which includes a pile body, a charging gun, and a ground-end charging device; wherein the pile body is electrically connected to the charging gun and the ground-end charging device respectively.

[0007] The charging gun is used to connect to the first vehicle-end charging device on the side of the vehicle to charge the vehicle.

[0008] The ground-side charging device is used to connect to the second vehicle-side charging device at the bottom of the vehicle to charge the vehicle.

[0009] The charging pile is used to establish a charging circuit between the charging pile and the vehicle when it is determined that the charging gun is successfully connected to the first vehicle-end charging device, or when it is determined that the ground-end charging device is successfully connected to the second vehicle-end charging device, and to charge the vehicle through the charging circuit.

[0010] In some embodiments, the pile body is provided with an AC power input terminal; the AC power input terminal is connected to the charging gun via a first AC power line, and a first switch unit is provided on the first AC power line; the AC power input terminal is connected to the ground charging device via a second AC power line, and a second switch unit is provided on the second AC power line; the pile body includes a main control unit; the main control unit is connected to the first switch unit and the second switch unit respectively;

[0011] The main control unit is used to control the first switch unit to close when it is determined that the charging gun is successfully connected to the first vehicle-side charging device, thereby establishing a first charging circuit between the charging pile and the vehicle, and charging the vehicle through the first charging circuit; or, when it is determined that the ground-side charging device is successfully connected to the second vehicle-side charging device, it controls the second switch unit to close to establish a second charging circuit between the charging pile and the vehicle, and charging the vehicle through the second charging circuit.

[0012] In some embodiments, the pile is also connected to the charging gun via a first control guide signal line; the pile is also connected to the ground-end charging device via a second control guide signal line; the main control unit is connected to both the first and second control guide signal lines; wherein...

[0013] The main control unit is also used to acquire a first voltage signal on the first control guide signal line and a second voltage signal on the second control guide signal line;

[0014] The main control unit is further configured to determine that the charging gun is successfully connected to the first vehicle-side charging device when the first voltage signal meets the preset signal conditions, or to determine that the ground-side charging device is successfully connected to the second vehicle-side charging device when the second voltage signal meets the preset signal conditions.

[0015] In some embodiments, the main control unit is also connected to the ground charging device via a serial communication bus; wherein,

[0016] The main control unit is also used to send service instructions to the ground charging device through the serial communication bus;

[0017] The ground-side charging device is also used to perform a response operation corresponding to the received service instruction.

[0018] In some embodiments, the main control unit is also connected to the ground charging device via an input / output interrupt signal line; wherein,

[0019] The ground-end charging device is also used to send a hardware fault signal of the ground-end charging device to the main control unit through the input / output interrupt signal line;

[0020] The main control unit is also configured to control the second switch unit to disconnect when it receives the hardware fault signal, so as to disconnect the second charging circuit between the ground charging device and the vehicle.

[0021] In some embodiments, the pile body further includes a diode detection unit; the diode detection unit is connected to the main control unit, the first control guide signal line, and the second control guide signal line, respectively;

[0022] The diode detection unit is used to detect whether there is a diode in the vehicle-side control guidance circuit connected to the first control guidance signal line, and send the detection result to the main control unit; or, to detect whether there is a diode in the vehicle-side control guidance circuit connected to the second control guidance signal line, and send the detection result to the main control unit.

[0023] The main control unit is further configured to, after the detection result indicates the presence of a diode in the vehicle-side control guidance circuit connected to the first control guidance signal line, establish a first charging circuit between the charging gun and the vehicle if it is determined that the charging gun and the first vehicle-side charging device are successfully connected; or, after the detection result indicates the presence of a diode in the vehicle-side control guidance circuit connected to the first control guidance signal line, establish a second charging circuit between the charging pile and the vehicle if it is determined that the ground-side charging device and the second vehicle-side charging device are successfully connected.

[0024] In some embodiments, the pile body further includes a leakage current detection unit; the AC power input terminal includes a live wire and a neutral wire; the leakage current detection unit is connected to the live wire, the neutral wire, and the main control unit respectively;

[0025] The leakage current detection unit is used to acquire a first current on the live wire and a second current on the neutral wire, and to determine the current difference between the first current and the second current.

[0026] The leakage detection unit is further configured to determine that there is leakage current at the AC power input terminal when the current difference is greater than a preset difference threshold, and send a leakage fault signal to the main control unit so that the main control unit controls the charging circuit to disconnect; wherein, the leakage fault signal is used to characterize the presence of leakage current at the AC power input terminal.

[0027] In some embodiments, the pile body further includes an auxiliary power supply unit; the input terminal of the auxiliary power supply unit is connected to the AC power input terminal; the output terminal of the auxiliary power supply unit is connected to the main control unit.

[0028] The auxiliary power supply unit is used to convert the AC power input at the AC power input terminal into DC power and provide DC power to the main control unit.

[0029] In some embodiments, the ground-side charging device includes a lifting module and a ground-side charging interface; wherein,

[0030] The lifting module is configured to lift the ground charging interface so that the ground charging interface can be plugged into the second vehicle-side charging device.

[0031] In some embodiments, the ground-side charging device further includes a housing and an opening / closing module; a charging opening is mounted on the top of the housing in the height direction, the opening / closing module is mounted on the housing and is capable of opening or closing the charging opening, and a lifting module is extendable / retractable in the housing;

[0032] When the opening module opens the charging opening, the lifting module can lift the ground charging interface along the height direction of the housing and extend it out of the housing so as to connect with the second vehicle-side charging device.

[0033] Secondly, this utility model provides a charging system, which includes a vehicle and a charging pile system as described in the first aspect above, wherein...

[0034] The vehicle includes a first vehicle-side charging device and / or a second vehicle-side charging device; wherein, the first vehicle-side charging device is used to connect to a charging gun in the charging pile system to charge the vehicle through the charging gun; the second vehicle-side charging device is used to connect to a ground-side charging device in the charging pile system to charge the vehicle through the ground-side charging device.

[0035] Compared with related technologies, this utility model provides a charging pile system and a charging system. The charging pile system includes a pile body, a charging gun, and a ground-end charging device. The pile body is electrically connected to both the charging gun and the ground-end charging device. The charging gun is used to connect to a first vehicle-side charging device on the side of the vehicle to charge the vehicle. The ground-end charging device is used to connect to a second vehicle-side charging device on the bottom of the vehicle to charge the vehicle. The pile body establishes a charging circuit between the pile body and the vehicle when the charging gun is successfully connected to the first vehicle-side charging device, or when the ground-end charging device is successfully connected to the second vehicle-side charging device, and charges the vehicle through this charging circuit. By simultaneously configuring the charging gun and the ground-end charging device, the same charging pile can charge the vehicle both via the side charging gun and the ground-end charging device, thus accommodating multiple charging access methods and improving charging convenience.

[0036] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects and advantages of the present application more readily apparent. Attached Figure Description

[0037] Figure 1 This is a structural schematic diagram of a charging pile system provided in this application;

[0038] Figure 2 This is a schematic diagram of another charging pile system provided in this application;

[0039] Figure 3 This is a schematic diagram of a charging system provided in this application.

[0040] Reference numerals: 100, charging pile system; 110, charging gun; 120, pile body; 121, AC power input terminal; 122, main control unit; 123, first switch unit; 124, second switch unit; 130, ground-side charging device; 200, external AC power supply; 300, vehicle; 310, first vehicle-side charging device; 320, second vehicle-side charging device. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] It should be noted that when a component is said to be "installed on" another component, it can be directly on the other component or it may be in a component that is centered on it. When a component is said to be "set on" another component, it can be directly set on the other component or it may also be in a component that is centered on it. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or it may also be in a component that is centered on it.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] See Figures 1 to 3 , Figure 1 A schematic diagram of the structure of a charging pile system according to this application is shown. Figure 2 A schematic diagram of another charging pile system according to this application is shown. Figure 3 A schematic diagram of the structure of a charging system according to this application is shown.

[0045] This embodiment provides a charging pile system 100, including a pile body 120, a charging gun 110, and a ground-end charging device 130. The pile body 120 is electrically connected to the charging gun 110 and the ground-end charging device 130.

[0046] The charging gun 110 is used to connect to the first vehicle-end charging device 310 on the side of the vehicle 300 to charge the vehicle 300.

[0047] The ground-end charging device 130 is used to connect to the second vehicle-end charging device 320 at the bottom of the vehicle 300 to charge the vehicle 300.

[0048] The charging pile 120 is used to establish a charging circuit between the charging pile 120 and the vehicle 300 when it is determined that the charging gun 110 is successfully connected to the first vehicle-end charging device 310, or when it is determined that the ground-end charging device 130 is successfully connected to the second vehicle-end charging device 320, and to charge the vehicle 300 through the charging circuit.

[0049] For details, please refer to Figure 1 and Figure 3The charging gun 110 is electrically connected to the charging pile 120 via a cable, and the charging gun 110 includes a charging port at the gun end. A first vehicle-side charging device 310 is disposed on the side of the vehicle 300 (e.g., on the left or right fender). The first vehicle-side charging device 310 includes a first vehicle-side charging port, which is used to connect and engage with the charging port at the gun end of the charging gun 110. When the charging port at the gun end of the charging gun 110 is inserted into the first vehicle-side charging port, a charging connection is established between the charging pile 120 and the vehicle 300, enabling side charging of the vehicle.

[0050] Meanwhile, the ground-mounted charging device 130 is electrically connected to the pile 120 via a cable. The ground-mounted charging device 130 is movably positioned on the ground near the pile 120 and includes a ground-mounted charging interface. The second vehicle-mounted charging device 320 is located at the bottom of the vehicle 300 (e.g., under the vehicle chassis) and includes a second vehicle-mounted charging interface. This second vehicle-mounted charging interface can be plugged into the ground-mounted charging interface in the ground-mounted charging device 130 to enable charging from the bottom of the vehicle, thus providing another charging access method.

[0051] Optionally, in one possible implementation, the ground-mounted charging device 130 incorporates a drive motor and a walking mechanism, and is equipped with a positioning device. When the vehicle 300 approaches, the ground-mounted charging device 130 establishes a communication connection with the vehicle 300. Upon receiving a charging command from the vehicle, the ground-mounted charging device 130 drives the walking mechanism to move and autonomously moves to a predetermined position under the vehicle based on the detection signal from the positioning device, thereby achieving automatic docking with the second vehicle-mounted charging device 320. In another possible implementation, the ground-mounted charging device 130 can be fixedly installed at a preset position on the ground of the parking space. After the vehicle 300 stops according to the ground guidance markings, the second vehicle-mounted charging device 320 naturally rests on top of the ground-mounted charging device 130, forming a plug-in connection.

[0052] In addition, the charging pile 120 can detect the connection status of the charging gun 110 and the ground charging device 130 in real time. When the charging pile 120 detects that the charging gun 110 is successfully connected to the first vehicle-side charging device 310 on the side of the vehicle 300, or detects that the ground charging device 130 is successfully connected to the second vehicle-side charging device 320 at the bottom of the vehicle 300, it determines that the charging start condition is met, controls the corresponding AC power line in the charging pile 120 to conduct, so as to establish a charging circuit between the charging pile 120 and the vehicle 300 and start charging the vehicle 300.

[0053] It is understood that by simultaneously configuring the charging gun 110 and the ground charging device 130, this embodiment enables the same charging pile to charge the vehicle 300 through both the side charging gun 110 and the ground charging device 130, thereby accommodating multiple charging access methods. Users can flexibly choose the vehicle charging method according to their actual needs, effectively improving charging convenience.

[0054] In some embodiments, the pile body 120 is provided with an AC power input terminal 121; the AC power input terminal 121 is connected to the charging gun 110 through a first AC power line, and a first switch unit 123 is provided on the first AC power line; the AC power input terminal 121 is connected to the ground charging device 130 through a second AC power line, and a second switch unit 124 is provided on the second AC power line; the pile body 120 includes a main control unit 122; the main control unit 122 is connected to the first switch unit 123 and the second switch unit 124 respectively.

[0055] The main control unit 122 is used to control the first switch unit 123 to close when it is determined that the charging gun 110 is successfully connected to the first vehicle-side charging device 310, thereby establishing a first charging circuit between the charging pile 120 and the vehicle 300 and charging the vehicle 300 through the first charging circuit; or, when it is determined that the ground-side charging device 130 is successfully connected to the second vehicle-side charging device 320, it controls the second switch unit 124 to close to establish a second charging circuit between the charging pile 120 and the vehicle 300 and charging the vehicle 300 through the second charging circuit.

[0056] For details, please refer to Figure 2 and Figure 3 The pile body 120 has an internal AC power input terminal 121 for connecting to an external AC power source 200, such as 220V AC mains power. The AC power input terminal 121 is equipped with an Electromagnetic Interference (EMI) surge protection module. This EMI surge protection module is used to suppress electromagnetic interference and surge overvoltage transmitted from the power grid, and to filter electromagnetic interference generated by the pile body 120 itself, so as to ensure the stable operation of the internal circuit of the pile body 120.

[0057] The aforementioned AC power input terminal 121 leads out a first AC power line and a second AC power line through a power distribution node inside the pile body 120, forming two independent power output branches. Both the first and second AC power lines include a live wire (L) and a neutral wire (N) for transmitting AC power. Simultaneously, the pile body 120 is also connected to the charging gun 110 and the grounded charging device 130 via a ground wire (PE) to achieve grounding.

[0058] The first AC power line is connected to the charging gun 110 to provide power output to the charging gun 110. A first switch unit 123 is provided on the first AC power line, which is connected in series in the line between the AC power input terminal 121 and the charging gun 110, and is used to control the on / off state of the first power output branch. The second AC power line is connected to the ground charging device 130 to provide power output to the ground charging device 130. A second switch unit 124 is provided on the second AC power line, which is connected in series in the line between the AC power input terminal 121 and the ground charging device 130, and is used to control the on / off state of the second power output branch.

[0059] In this embodiment, a main control unit 122 is provided inside the charging pile 120. The main control unit 122 may be a microcontroller unit (MCU). The main control unit 122 is connected to the first switch unit 123 and the second switch unit 124 respectively, and is used to independently control the closing and opening of each switch unit. When the main control unit 122 detects that the charging gun 110 is successfully plugged into the first vehicle-side charging device 310 on the side of the vehicle 300, it determines that the first charging condition is met. At this time, the main control unit 122 controls the first switch unit 123 to close, so that the first AC power line between the AC power input terminal 121 and the charging gun 110 is connected, thereby establishing a first charging circuit between the charging pile 120 and the vehicle 300. The charging pile 120 outputs electrical energy to the vehicle 300 through the first charging circuit to realize the charging of the vehicle 300.

[0060] Similarly, when the main control unit 122 detects that the ground charging device 130 and the second vehicle-side charging device 320 at the bottom of the vehicle 300 are successfully connected, it determines that the second charging condition is met. At this time, the main control unit 122 controls the second switch unit 124 to close, so that the second AC power line between the AC power input terminal 121 and the ground charging device 130 is connected, thereby establishing a second charging circuit between the pile body 120 and the vehicle 300. The pile body 120 outputs electrical energy to the vehicle 300 through the second charging circuit to realize the charging of the vehicle 300.

[0061] The first switching unit 123 and the second switching unit 124 can be relays, controllable semiconductor switching devices, etc. The first switching unit 123 and the second switching unit 124 are respectively located on their respective AC power lines and do not affect each other. When the first switching unit 123 and the second switching unit 124 are implemented using relays, each switching unit is provided with two relay contacts, connected in series with the live wire and neutral wire of the corresponding AC power line, respectively, and their closing and opening are synchronously controlled by the main control unit 122.

[0062] Furthermore, when a relay is used, the pile body 120 is also equipped with a relay adhesion detection unit to detect whether there is a contact adhesion fault in the relay, and send the detection result to the main control unit 122 to prevent safety risks caused by the charging circuit being unable to switch on and off normally due to contact adhesion.

[0063] It should be noted that the main control unit 122 can only allow one of the first switch unit 123 and the second switch unit 124 to be in a closed state at any given time, that is, selectively conducting either the first charging circuit or the second charging circuit to prevent power conflict or safety hazards caused by simultaneous output of the two circuits. When the conducting charging circuit needs to be disconnected due to completion of charging, disconnection, or malfunction, the main control unit 122 controls the corresponding switch unit to open, cutting off the power output of that circuit; if the other circuit has met the connection conditions at this time, the main control unit 122 can control the corresponding switch unit of the other circuit to close, realizing the switching of charging mode.

[0064] In addition, the charging pile 120 may include, but is not limited to, a short-circuit detection unit, a communication module, a near-field communication (NFC) module, and a display module, each of which is connected to the main control unit 122. The short-circuit detection unit is used to detect short circuits at the output of the charging gun 110 or the ground charging device 130. When a short-circuit fault is detected at the output, it sends a short-circuit fault signal to the main control unit 122. The communication module includes a 4G communication module and a Bluetooth module. The 4G communication module is used to upload the operating data of the charging pile 120 to a cloud server and can receive remote control commands. The Bluetooth module is used to enable communication with mobile terminals or vehicles. The NFC module is used to read RFID cards or NFC-enabled mobile devices to achieve user authentication and charging authorization. The display module can be used to display charging status, power information, fault codes, and billing information.

[0065] Thus, in this embodiment, the charging gun 110 and the ground charging device 130 are connected by two independent AC power lines respectively, and the main control unit 122 selects one to control the corresponding switch unit to close according to the actual plug-in state, so as to realize the compatibility and flexible switching between the two charging methods of side charging and bottom charging.

[0066] In some embodiments, the pile body 120 is also connected to the charging gun 110 via a first control guide signal line; the pile body 120 is also connected to the ground charging device 130 via a second control guide signal line; the main control unit 122 is connected to the first control guide signal line and the second control guide signal line respectively.

[0067] The main control unit 122 is also used to acquire the first voltage signal on the first control guide signal line and the second voltage signal on the second control guide signal line.

[0068] The main control unit 122 is also used to determine that the charging gun 110 and the first vehicle-end charging device 310 are successfully connected when the first voltage signal meets the preset signal conditions, or to determine that the ground-end charging device 130 and the second vehicle-end charging device 320 are successfully connected when the second voltage signal meets the preset signal conditions.

[0069] For details, please refer to Figure 2 and Figure 3 The pile body 120 also achieves signal interaction with the charging gun 110 and the ground charging device 130 through a control pilot (CP) signal line. Specifically, the first control pilot signal line is connected between the pile body 120 and the charging gun 110, forming a control pilot loop between the pile body 120 and the vehicle 300 when the charging gun 110 is connected to the first vehicle-side charging device 310 on the side of the vehicle 300; the second control pilot signal line is connected between the pile body 120 and the ground charging device 130, forming a control pilot loop between the pile body 120 and the vehicle 300 when the ground charging device 130 is connected to the second vehicle-side charging device 320 at the bottom of the vehicle 300.

[0070] The main control unit 122 inside the pile body 120 is electrically connected to the first control guide signal line and the second control guide signal line respectively, and is used to acquire the voltage signal on each signal line in real time. By detecting the voltage signal, the main control unit 122 can determine whether the charging gun 110 or the ground charging device 130 has been successfully connected to the vehicle 300.

[0071] In specific implementation, for example, when the charging gun 110 is plugged into the first vehicle-side charging device 310 on the side of the vehicle 300, if the main control unit 122 detects that the voltage on the first control guide signal line is 6V PWM, it determines that the charging gun 110 and the vehicle 300 are successfully plugged in. Similarly, the working principle of the second control guide signal line is the same as that of the first control guide signal line. When the ground-side charging device 130 is plugged into the second vehicle-side charging device 320 at the bottom of the vehicle 300, if the main control unit 122 detects that the voltage on the second control guide signal line is 6V PWM, it determines that the ground-side charging device 130 and the vehicle 300 are successfully plugged in.

[0072] In addition, a temperature detection unit can be provided on the control guide signal line to monitor the temperature on the CP signal line. Simultaneously, the pile body 120 is also connected to the charging gun 110 and the ground charging device 130 via a Connection Confirmation (CC) signal line. Specifically, the pile body 120 is connected to the charging gun 110 via a first Connection Confirmation signal line and to the ground charging device 130 via a second Connection Confirmation signal line. The pile body 120 is also connected to the charging gun 110 via a first temperature measurement signal line to acquire the temperature detection signal at the charging gun head; the pile body 120 is also connected to the ground charging device 130 via a second temperature measurement signal line to acquire the temperature detection signal at the ground charging interface of the ground charging device 130. In specific implementations, for example, negative temperature coefficient (NTC) temperature sensors can be installed at the charging gun head and the ground charging interface to achieve real-time monitoring of the temperature of key contact points during charging, ensuring the safety and reliability of the charging process.

[0073] Thus, this embodiment uses the first control guide signal line and the second control guide signal line to detect the plugging status of the two charging access methods.

[0074] In some embodiments, the main control unit 122 is also connected to the ground charging device 130 via a serial communication bus.

[0075] The main control unit 122 is also used to send service instructions to the ground charging device 130 via the serial communication bus.

[0076] The ground charging device 130 is also used to perform response operations corresponding to the received service instructions.

[0077] See Figure 2 In this embodiment, the main control unit 122 is also connected to the ground charging device 130 via a serial communication bus (e.g., RS-485 bus) to enable data interaction between the main control unit 122 and the ground charging device 130. This serial communication bus is independent of the AC power line and control guidance signal line and is used to transmit service commands and corresponding response data.

[0078] It should be noted that the service instructions include, but are not limited to, status query instructions, parameter configuration instructions, and fault reset instructions. The status query instruction is used to request the ground-side charging device 130 to report its current operating status, such as whether it is in standby mode or moving. The parameter configuration instruction is used to send operating parameters to the ground-side charging device 130. The fault reset instruction is used to send a reset command to the ground-side charging device 130 to clear the fault state and restore standby mode after a recoverable fault occurs.

[0079] After receiving the service instruction sent by the main control unit 122, the ground charging device 130 executes the corresponding response operation according to the operation content indicated by the service instruction. Taking the above-mentioned status query instruction as an example, when the ground charging device 130 receives the status query instruction, it encapsulates the current status information of the ground charging device 130 into response data and transmits it back to the main control unit 122 through the same serial communication bus.

[0080] In this way, the main control unit 122 establishes a data communication link with the ground charging device 130 through the serial communication bus, thereby enabling the pile body 120 and the ground charging device 130 to work together.

[0081] It is understood that the above-described business instruction types are merely illustrative examples. In practical applications, they can be flexibly defined according to specific functional requirements, and this embodiment does not impose any specific limitations on them.

[0082] In some embodiments, the main control unit 122 is also connected to the ground charging device 130 via an input / output interrupt signal line.

[0083] The ground charging device 130 is also used to send a hardware fault signal of the ground charging device 130 to the main control unit 122 via the input / output interrupt signal line.

[0084] The main control unit 122 is also used to control the second switch unit 124 to disconnect when a hardware fault signal is received, so as to disconnect the second charging circuit between the ground charging device 130 and the vehicle 300.

[0085] See Figure 2 In this embodiment, the main control unit 122 is also connected to the ground charging device 130 via an input / output (I / O) interrupt signal line. This I / O interrupt signal line is an independent hardware signal line used to transmit emergency hardware fault signals with high response priority.

[0086] Specifically, the ground-side charging device 130 contains a fault detection circuit for real-time monitoring of the operating status of its various hardware modules. When the ground-side charging device 130 detects a hardware fault, it sends a hardware fault signal to the main control unit 122 via the I / O interrupt signal line. This hardware fault signal is typically a level transition signal (e.g., a transition from high to low, or from low to high).

[0087] Understandably, the ground charging device 130 sends a hardware fault signal to the main control unit 122 through the I / O interrupt signal line, which can trigger the main control unit 122 to respond to the emergency fault immediately without waiting for the polling cycle or protocol parsing time of the serial communication bus.

[0088] In response to the hardware fault signal, the main control unit 122 controls the second switch unit 124 to open. The second switch unit 124 is located on the second AC power line between the AC power input terminal 121 and the ground charging device 130. After the second switch unit 124 is opened, the second charging circuit between the ground charging device 130 and the vehicle 300 is also disconnected.

[0089] Optionally, in one possible implementation, after the main control unit 122 controls the second switch unit 124 to disconnect, it also sends a fault confirmation command to the ground charging device 130 via a serial communication bus to obtain specific fault type information of the ground charging device 130. After receiving the fault confirmation command, the ground charging device 130 reports the fault code or fault description information to the main control unit 122 via the serial communication bus. Then, the main control unit 122 can send fault alarm information to the user or maintenance platform through the display module or communication module (such as a 4G module) of the charging pile 120.

[0090] Thus, this embodiment utilizes the I / O interrupt signal line to realize the immediate reporting of hardware faults in the ground charging device 130 and the rapid response of the main control unit 122, effectively avoiding response delays caused by serial communication bus transmission delays, and improving the safety and reliability of the charging system.

[0091] In some embodiments, the pile body 120 further includes a diode detection unit; the diode detection unit is connected to the main control unit 122, the first control guidance signal line, and the second control guidance signal line, respectively.

[0092] The diode detection unit is used to detect whether there is a diode in the vehicle-side control guidance circuit connected to the first control guidance signal line, and send the detection result to the main control unit 122; or, to detect whether there is a diode in the vehicle-side control guidance circuit connected to the second control guidance signal line, and send the detection result to the main control unit 122.

[0093] The main control unit 122 is also used to establish a first charging circuit between the pile body 120 and the vehicle 300 if the charging gun 110 is successfully connected to the first vehicle-side charging device 310 after the detection result indicates that a diode exists in the vehicle-side control guidance circuit connected to the first control guidance signal line; or, if the ground-side charging device 130 is successfully connected to the second vehicle-side charging device 320 after the detection result indicates that a diode exists in the vehicle-side control guidance circuit connected to the first control guidance signal line, a second charging circuit between the pile body 120 and the vehicle 300 is established.

[0094] For details, please refer to Figure 2A diode detection unit is installed inside the pile body 120. This diode detection unit is connected to the main control unit 122, the first control guidance signal line, and the second control guidance signal line, respectively, and is used to detect the presence of diodes in the vehicle-side control guidance circuits connected to the two control guidance signal lines. This embodiment does not limit the specific implementation of the diode detection unit.

[0095] When the charging gun 110 is connected to the first vehicle-side charging device 310 on the side of the vehicle 300, the diode detection unit detects whether a diode exists in the corresponding vehicle bottom control guide circuit via the first control guide signal line, and sends the detection result to the main control unit 122. Alternatively, when the local charging device 130 is connected to the second vehicle-side charging device 320 at the bottom of the vehicle 300, the diode detection unit detects whether a diode exists in the corresponding vehicle bottom control guide circuit via the second control guide signal line, and sends the detection result to the main control unit 122.

[0096] Furthermore, when the detection result indicates the presence of a diode in the vehicle-side control guidance circuit connected to the first control guidance signal line, if the main control unit 122 determines that the charging gun 110 and the first vehicle-side charging device 310 have been successfully connected, it controls the first switch unit 123 to close, thereby establishing a first charging circuit between the charging pile 120 and the vehicle 300. When the detection result indicates the presence of a diode in the vehicle-side control guidance circuit connected to the second control guidance signal line, if the main control unit 122 determines that the ground-side charging device 130 and the second vehicle-side charging device 320 have been successfully connected, it controls the second switch unit 124 to close, thereby establishing a second charging circuit.

[0097] It should be noted that if the detection result indicates that there is no diode in the vehicle-side control guidance circuit connected to a certain control guidance signal line, the main control unit 122 will prohibit the establishment of the corresponding charging circuit, that is, the vehicle charging process will not be initiated. This avoids accidental charging initiation due to non-standard or abnormal vehicle-side control guidance circuitry, thus improving the safety of the charging system.

[0098] In some embodiments, the pile body 120 further includes a leakage current detection unit; the AC power input terminal 121 includes a live wire and a neutral wire; the leakage current detection unit is connected to the live wire, the neutral wire, and the main control unit 122 respectively.

[0099] The leakage current detection unit is used to acquire the first current on the live wire and the second current on the neutral wire, and to determine the current difference between the first current and the second current.

[0100] The leakage detection unit is also used to determine that there is leakage current at the AC power input terminal 121 when the current difference is greater than the preset difference threshold, and to send a leakage fault signal to the main control unit 122 so that the main control unit 122 controls the charging circuit to disconnect; wherein, the leakage fault signal is used to characterize the presence of leakage current at the AC power input terminal 121.

[0101] In this embodiment, a leakage current detection unit is also provided inside the pile body 120. The AC power input terminal 121 includes a live wire (L) and a neutral wire (N) for connecting to the AC power grid of the external power grid. The leakage current detection unit is connected to the live wire, the neutral wire, and the main control unit 122 respectively, and is used to monitor in real time whether there is leakage current at the AC power input terminal 121, and send a fault signal to the main control unit 122 when leakage is detected, so that the main control unit 122 can perform corresponding safety protection actions.

[0102] In practical implementation, current sampling elements (e.g., current transformers) are installed on both the live wire and the neutral wire to acquire the first current on the live wire and the second current on the neutral wire. The leakage detection unit includes a computational comparison circuit or a digital signal processing circuit to calculate the current difference between the first and second currents. Under normal operating conditions, the current flowing through the live wire and the current flowing through the neutral wire are equal in magnitude and opposite in direction; theoretically, the magnitude of their vector sum is zero. When leakage occurs at the charging device or vehicle end, a difference appears between the live wire current and the neutral wire current; this current difference is the magnitude of the leakage current.

[0103] The leakage current detection unit compares the current difference with a preset difference threshold, which can be a leakage current value that meets relevant safety standards. When the current difference exceeds the preset difference threshold, the leakage current detection unit determines that there is leakage current at the AC power input terminal 121 and then sends a leakage fault signal to the main control unit 122. This leakage fault signal can be a level signal or a digital signal, used to characterize the current presence of leakage current at the AC power input terminal 121.

[0104] Furthermore, upon receiving a leakage fault signal, the main control unit 122 controls the charging circuit to disconnect. Specifically, if the charging pile 120 is charging the vehicle 300 through the first charging circuit, the main control unit 122 controls the first switch unit 123 to disconnect; if the charging pile 120 is charging the vehicle 300 through the second charging circuit, the main control unit 122 controls the second switch unit 124 to disconnect. If both circuits are in a non-charging state, the main control unit 122 controls both the first switch unit 123 and the second switch unit 124 to remain disconnected and prohibits either switch unit from closing, to prevent charging from starting in the presence of a leakage fault.

[0105] In addition, the charging pile 120 may also include a grounding detection unit and a current / voltage detection unit, which are connected to the main control unit 122. The grounding detection unit is used to detect whether the protective grounding (PE) of the AC power input terminal 121 is reliably connected to ensure the grounding safety of the charging equipment. The current / voltage detection unit is used to collect real-time current and voltage signals on the live and neutral wires of the AC power input terminal 121 and send the collected signals to the main control unit 122.

[0106] Thus, in this embodiment, the leakage current of the AC power input terminal 121 inside the pile body 120 is monitored in real time by the leakage detection unit, and the main control unit 122 is notified immediately to disconnect the charging circuit when leakage occurs, thereby improving the safety protection capability of the charging system.

[0107] In some embodiments, the pile body 120 further includes an auxiliary power supply unit; the input terminal of the auxiliary power supply unit is connected to the AC power input terminal 121; and the output terminal of the auxiliary power supply unit is connected to the main control unit 122.

[0108] The auxiliary power supply unit is used to convert the AC power input at the AC power input terminal 121 into DC power and provide DC power to the main control unit 122.

[0109] Specifically, an auxiliary power supply unit is also provided inside the pile body 120. The input terminal of the auxiliary power supply unit is connected to the AC power input terminal 121, and the output terminal of the auxiliary power supply unit is connected to the main control unit 122. The auxiliary power supply unit is used to convert the AC power input at the AC power input terminal 121 into DC power and output the DC power to the main control unit 122.

[0110] It is understood that the auxiliary power supply unit in this embodiment supplies power to the main control unit 122 by converting AC power to DC power, ensuring the normal operation of the main control unit 122. The auxiliary power supply unit can be a switching power supply module, etc. This embodiment does not limit the specific implementation circuit of the auxiliary power supply unit, as long as it can achieve the function of converting AC power to DC operating power.

[0111] In some embodiments, the ground charging device 130 includes a lifting module and a ground charging interface.

[0112] The lifting module is configured to lift the ground charging interface so that the ground charging interface can be plugged into the second vehicle-side charging device 320.

[0113] In this embodiment, the ground-side charging device 130 includes a lifting module and a ground-side charging interface. The ground-side charging device 130 has a built-in drive motor and a walking mechanism, and is equipped with a positioning device. When a charging command is received, the ground-side charging device 130 drives the walking mechanism to move, and autonomously moves to a predetermined position at the bottom of the vehicle 300 according to the detection signal of the positioning device, thereby realizing its automatic docking with the second vehicle-side charging device 320.

[0114] The lifting module is used to lift the ground charging interface after the ground charging device 130 moves to a predetermined position at the bottom of the vehicle 300, so that the ground charging interface can be connected to the vehicle charging interface in the second vehicle charging device 320. Furthermore, the lifting module is also used to lower the ground charging interface, so that the ground charging interface can be disconnected from the vehicle charging interface in the second vehicle charging device 320.

[0115] Furthermore, it should be noted that the shape and terminal arrangement of the ground charging interface match the vehicle charging interface in the second vehicle charging device 320. After the ground terminal in the ground charging interface is connected to the corresponding vehicle terminal in the second vehicle charging device 320, the charging pile 120 can charge the vehicle 300 through the ground charging device 130.

[0116] Thus, by incorporating a lifting module and a ground-side charging interface into the ground-side charging device 130, this embodiment allows the lifting module to raise the ground-side charging interface after the ground-side charging device 130 autonomously moves to a predetermined position under the vehicle 300, enabling it to connect with the second vehicle-side charging device 320 at the bottom of the vehicle 300. This achieves automatic docking and charging between the ground-side charging device 130 and the vehicle 300. During this process, the user does not need to manually operate the charging gun, significantly improving the convenience and user experience of vehicle charging.

[0117] In some embodiments, the ground charging device 130 further includes a housing and an opening / closing module; the charging opening is mounted on the top of the housing in the height direction, the opening / closing module is mounted on the housing and can open or close the charging opening, and the lifting module is extended / retracted in the housing;

[0118] When the opening module opens the charging opening, the lifting module can lift the ground charging interface along the height direction of the housing and extend it out of the housing to dock with the second vehicle-side charging device 320.

[0119] In this embodiment, the ground charging device 130 includes a housing, an opening / closing module, and a lifting module. The housing serves as the main support of the ground charging device 130, and its interior forms a receiving space for accommodating the lifting module, the ground charging interface, etc. A charging opening is located at the top of the housing in the height direction (i.e., the side of the housing facing the bottom of the vehicle), serving as a channel for the ground charging interface to extend and retract. The opening / closing module is mounted on the housing and is used to open or close the charging opening. The lifting module is extended or retracted within the housing along the height direction, with one end connected to the ground charging interface, used to drive the ground charging interface to move along the height direction of the housing. It should be noted that this embodiment does not limit the specific implementation of the opening / closing module, the lifting module, and other structures.

[0120] In practice, after receiving a charging command, the ground charging device 130 can pre-control the opening and closing module to open the charging opening on the top of the housing. Then, the ground charging device 130 controls itself to move to a predetermined position at the bottom of the vehicle 300 to align horizontally with the second vehicle-side charging device 320. After confirming that it has reached the predetermined position, the lifting module drives the ground charging interface to rise along the height of the housing, extending it out of the housing through the charging opening and moving towards the second vehicle-side charging device 320 at the bottom of the vehicle until the ground charging interface is fully connected to the second vehicle-side charging device 320 to execute the subsequent charging process.

[0121] It should be noted that after the vehicle charging is completed, the lifting module drives the ground charging interface to retract into the housing along the height direction. After the ground charging interface is fully retracted, the ground charging device 130 can control itself to move back to the initial parking position and control the opening and closing module to close the charging opening on the top of the housing, thereby completing the reset.

[0122] Thus, in standby mode, the ground charging device 130 has its ground charging interface completely retracted inside the housing, and the charging opening remains closed. The housing provides a sealed protection for the ground charging interface, effectively preventing dust, rainwater, foreign objects, etc., from entering or adhering to it. This avoids poor contact or malfunctions caused by dirt or moisture on the interface when docking with the vehicle-side charging device. Simultaneously, the lifting module extends and retracts along its height within the housing, guiding and limiting the movement path of the ground charging interface to ensure precise docking between the ground charging interface and the second vehicle-side charging device 320.

[0123] This embodiment also provides a charging system. See below. Figure 3 The charging system provided in this embodiment includes a vehicle 300 and a charging pile system 100 as described in any of the above embodiments. The specific structure and working principle of the charging pile system 100 have been described in detail in the previous related embodiments, and will not be repeated here.

[0124] The vehicle 300 includes a first vehicle-end charging device 310 and / or a second vehicle-end charging device 320; wherein, the first vehicle-end charging device 310 is used to connect to the charging gun 110 in the charging pile system 100 to charge the vehicle 300 through the charging gun 110; the second vehicle-end charging device 320 is used to connect to the ground-end charging device 130 in the charging pile system 100 to charge the vehicle 300 through the ground-end charging device 130.

[0125] Specifically, the first vehicle-side charging device 310 can be located on the side of the vehicle 300 (e.g., on the left or right fender). The first vehicle-side charging device 310 includes a first vehicle-side charging interface for connecting and engaging with the charging gun 110 in the charging pile system 100. When the charging gun 110 is inserted into the first vehicle-side charging device 310, the charging pile 120 provides charging power to the vehicle 300 through the charging gun 110, achieving side charging.

[0126] The second vehicle-side charging device 320 is disposed at the bottom of the vehicle 300 (e.g., under the vehicle chassis). The second vehicle-side charging device 320 includes a second vehicle-side charging interface for connecting and engaging with the ground-side charging interface of the ground-side charging device 130 in the charging pile system 100. After the ground-side charging device 130 is raised and docked with the second vehicle-side charging device 320, the charging pile 120 provides charging power to the vehicle 300 through the ground-side charging device 130, achieving bottom charging.

[0127] It should be noted that the vehicle 300 may be equipped with only the first vehicle-end charging device 310, only the second vehicle-end charging device 320, or both the first vehicle-end charging device 310 and the second vehicle-end charging device 320.

[0128] Thus, the charging system provided in this embodiment, through the cooperation between the charging pile system 100 and different charging interfaces on the vehicle, enables the same charging pile system to adapt to vehicles with different charging interface configurations, thereby improving the system's versatility and user experience.

[0129] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0130] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A charging pile system (100), characterized in that, The charging pile system (100) includes a pile body (120), a charging gun (110), and a ground-end charging device (130); wherein the pile body (120) is electrically connected to the charging gun (110) and the ground-end charging device (130) respectively; The charging gun (110) is used to connect to the first vehicle-end charging device (310) on the side of the vehicle (300) to charge the vehicle (300); The ground-end charging device (130) is used to connect to the second vehicle-end charging device (320) at the bottom of the vehicle (300) to charge the vehicle (300); The pile body (120) is used to establish a charging circuit between the pile body (120) and the vehicle (300) when it is determined that the charging gun (110) is successfully connected to the first vehicle-end charging device (310), or when it is determined that the ground-end charging device (130) is successfully connected to the second vehicle-end charging device (320), and to charge the vehicle (300) through the charging circuit.

2. The charging pile system (100) according to claim 1, characterized in that, The pile body (120) is provided with an AC power input terminal (121); the AC power input terminal (121) is connected to the charging gun (110) through a first AC power line, and a first switch unit (123) is provided on the first AC power line; the AC power input terminal (121) is connected to the ground terminal charging device (130) through a second AC power line, and a second switch unit (124) is provided on the second AC power line; the pile body (120) includes a main control unit (122); the main control unit (122) is connected to the first switch unit (123) and the second switch unit (124) respectively; The main control unit (122) is used to control the first switch unit (123) to close when it is determined that the charging gun (110) and the first vehicle-side charging device (310) are successfully connected, to establish a first charging circuit between the pile body (120) and the vehicle (300), and to charge the vehicle (300) through the first charging circuit; or, when it is determined that the ground-side charging device (130) and the second vehicle-side charging device (320) are successfully connected, it controls the second switch unit (124) to close to establish a second charging circuit between the pile body (120) and the vehicle (300), and to charge the vehicle (300) through the second charging circuit.

3. The charging pile system (100) according to claim 2, characterized in that, The pile body (120) is also connected to the charging gun (110) via a first control guide signal line; the pile body (120) is also connected to the ground-end charging device (130) via a second control guide signal line; the main control unit (122) is connected to the first control guide signal line and the second control guide signal line respectively; wherein, The main control unit (122) is also used to acquire a first voltage signal on the first control guide signal line and a second voltage signal on the second control guide signal line; The main control unit (122) is also used to determine that the charging gun (110) and the first vehicle-side charging device (310) are successfully connected when the first voltage signal meets the preset signal conditions, or to determine that the ground-side charging device (130) and the second vehicle-side charging device (320) are successfully connected when the second voltage signal meets the preset signal conditions.

4. The charging pile system (100) according to claim 2, characterized in that, The main control unit (122) is also connected to the ground charging device (130) via a serial communication bus; wherein, The main control unit (122) is also used to send service instructions to the ground charging device (130) through the serial communication bus; The ground-side charging device (130) is also used to perform a response operation corresponding to the received service instruction.

5. The charging pile system (100) according to claim 2, characterized in that, The main control unit (122) is also connected to the ground charging device (130) via an input / output interrupt signal line; wherein, The ground charging device (130) is also used to send a hardware fault signal of the ground charging device (130) to the main control unit (122) through the input / output interrupt signal line; The main control unit (122) is also used to control the second switch unit (124) to disconnect when it receives the hardware fault signal, so as to disconnect the second charging circuit between the ground charging device (130) and the vehicle (300).

6. The charging pile system (100) according to claim 3, characterized in that, The pile body (120) also includes a diode detection unit; the diode detection unit is connected to the main control unit (122), the first control guide signal line, and the second control guide signal line respectively; The diode detection unit is used to detect whether there is a diode in the vehicle-side control guidance circuit connected to the first control guidance signal line, and send the detection result to the main control unit (122); or, to detect whether there is a diode in the vehicle-side control guidance circuit connected to the second control guidance signal line, and send the detection result to the main control unit (122). The main control unit (122) is further configured to, after the detection result indicates the presence of a diode in the vehicle-side control guidance circuit connected to the first control guidance signal line, establish a first charging circuit between the pile (120) and the vehicle (300) if it is determined that the charging gun (110) and the first vehicle-side charging device (310) are successfully connected; or, after the detection result indicates the presence of a diode in the vehicle-side control guidance circuit connected to the first control guidance signal line, establish a second charging circuit between the pile (120) and the vehicle (300) if it is determined that the ground-side charging device (130) and the second vehicle-side charging device (320) are successfully connected.

7. The charging pile system (100) according to claim 2, characterized in that, The pile body (120) also includes a leakage current detection unit; the AC power input terminal (121) includes a live wire and a neutral wire; the leakage current detection unit is connected to the live wire, the neutral wire, and the main control unit (122) respectively; The leakage current detection unit is used to acquire a first current on the live wire and a second current on the neutral wire, and to determine the current difference between the first current and the second current. The leakage detection unit is also used to determine that there is leakage current at the AC power input terminal (121) when the current difference is greater than a preset difference threshold, and to send a leakage fault signal to the main control unit (122) so that the main control unit (122) controls the charging circuit to disconnect; wherein, the leakage fault signal is used to characterize that there is leakage current at the AC power input terminal (121).

8. The charging pile system (100) according to claim 5, characterized in that, The pile body (120) also includes an auxiliary power supply unit; the input end of the auxiliary power supply unit is connected to the AC power input end (121); the output end of the auxiliary power supply unit is connected to the main control unit (122); The auxiliary power supply unit is used to convert the AC power input at the AC power input terminal (121) into DC power and provide DC power to the main control unit (122).

9. The charging pile system (100) according to claim 1, characterized in that, The ground-end charging device (130) includes a lifting module and a ground-end charging interface; wherein, The lifting module is configured to lift the ground charging interface so that the ground charging interface can be plugged into the second vehicle-side charging device (320).

10. The charging pile system (100) according to claim 9, characterized in that, The ground charging device (130) also includes a housing and an opening and closing module; the charging opening is installed at the top of the housing in the height direction, the opening and closing module is installed on the housing and can open or close the charging opening, and the lifting module is extended / retracted in the housing; When the opening module opens the charging opening, the lifting module can lift the ground charging interface along the height direction of the housing and extend it out of the housing so as to connect with the second vehicle-side charging device (320).

11. A charging system, characterized in that, The charging system includes a vehicle (300) and a charging pile system (100) as described in any one of claims 1 to 10, wherein, The vehicle (300) includes a first vehicle-end charging device (310) and / or a second vehicle-end charging device (320); wherein, the first vehicle-end charging device (310) is used to connect to the charging gun (110) in the charging pile system (100) to charge the vehicle (300) through the charging gun (110); the second vehicle-end charging device (320) is used to connect to the ground-end charging device (130) in the charging pile system (100) to charge the vehicle (300) through the ground-end charging device (130).

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