Charging System

Abstract

The present invention proposes a charging system, comprising: a power supply device, an adapter and a load, wherein the adapter is used to connect the power supply device and the load; wherein the power supply device is used to output a first power signal; the adapter comprises a charging socket, a charging plug and an adapter subsystem; wherein the charging socket is used to connect the power supply device and input a first power signal; the adapter subsystem is used to receive or generate a second power signal; the charging plug is used to connect the load and output a first power signal or a second power signal; the load is used to receive the first power signal or the second power signal and charge according to the first power signal or the second power signal. The present invention improves the charging system by adding an adapter between the charging pile and the vehicle without modifying the vehicle and the charging pile, thereby improving the intelligence level of the charging system and the user experience.

Description

Technical Field

[0001] The present invention relates to the field of charging technology, and in particular to a charging system. Background Art

[0002] With the continuous increase in global energy demand and the enhancement of environmental protection awareness, electric vehicles, as representatives of new energy vehicles, are rapidly expanding their market share. This trend has put forward higher requirements for the construction of power supply facilities and the technological innovation of charging systems. The traditional charging system is mainly composed of key components such as charging pile host, charging socket, charging cable, meter and control system, which are responsible for providing power, monitoring operating status, fault diagnosis, data collection and supporting remote control. However, with the growth of electric vehicle user groups and the diversification of usage scenarios, existing charging solutions are facing challenges in terms of intelligence level and user experience.

[0003] To this end, the charging system needs to be improved to enhance the intelligence level of the charging system, user experience, etc. Summary of the invention

[0004] The present invention aims to solve the technical problems in the related art to a certain extent.

[0005] To this end, the purpose of the present invention is to propose a charging system, which can improve the charging system by adding an adapter between the charging pile and the vehicle without modifying the vehicle and the charging pile, thereby improving the intelligence level of the charging system and improving the user experience.

[0006] To achieve the above-mentioned purpose, an embodiment of the present invention proposes a charging system, comprising: a power supply device, an adapter and a load, wherein the adapter is used to connect the power supply device and the load; wherein the power supply device is used to output a first power signal; the adapter comprises a charging socket, a charging plug and an adapter subsystem; wherein the charging socket is used to connect the power supply device and input the first power signal; the adapter subsystem is used to receive or generate a second power signal; the charging plug is used to connect the load and output the first power signal or the second power signal; the load is used to receive the first power signal or the second power signal, and charge according to the first power signal or the second power signal.

[0007] The charging system of the embodiment of the present invention includes a power supply device, an adapter and a load, wherein the power supply device is used to output a first power signal; the adapter includes a charging socket, a charging plug and an adapter subsystem; wherein the charging socket is used to connect the power supply device and input the first power signal; the adapter subsystem is used to receive or generate a second power signal; the charging plug is used to connect the load and output the first power signal or the second power signal; the load is used to receive the first power signal or the second power signal and charge according to the first power signal or the second power signal. Therefore, the present invention improves the charging system by adding an adapter between the charging pile and the vehicle without modifying the vehicle and the charging pile, thereby improving the intelligence level of the charging system and improving the user experience.

[0008] In addition, the charging system provided in the embodiment of the present invention may also have the following additional technical features:

[0009] According to an embodiment of the present invention, the second power signal is received or generated by the switching subsystem in the following manner:

[0010] The cloud server generates the second power signal, and sends the second power signal to the switching subsystem;

[0011] Alternatively, the switching subsystem receives a charging parameter signal sent by a cloud server, and generates the second power signal according to the first power signal and the charging parameter signal; wherein the charging parameter signal is generated by the cloud server according to electricity price period information and / or user preference information;

[0012] Alternatively, the switching subsystem generates the second power signal according to built-in parameters and voltage period information.

[0013] According to an embodiment of the present invention, the charging plug outputting the first power signal or the second power signal includes:

[0014] Before the switching subsystem fails or is initialized, the charging plug outputs the first power signal;

[0015] After the switching subsystem is powered on and initialized, the charging plug outputs the second power signal.

[0016] According to an embodiment of the present invention, the power supply device is an AC charging pile, the adapter is an AC adapter, and the load is a vehicle; wherein,

[0017] The charging socket is provided with a first L1-phase AC power terminal, a first L2-phase AC power terminal, a first L3-phase AC power terminal, a first neutral line terminal, a first equipment ground terminal, a first charging connection confirmation terminal and a first control guide terminal;

[0018] The charging plug is provided with a second L1-phase AC power terminal, a second L2-phase AC power terminal, a second L3-phase AC power terminal, a second neutral line terminal, a second equipment ground terminal, a second charging connection confirmation terminal and a second control guide terminal;

[0019] The transfer subsystem includes an L1-phase AC power line, an L2-phase AC power line, an L3-phase AC power line, a neutral line, an equipment ground line, an AC charging connection confirmation line, a first control guide line, a second control guide line and an AC orderly transfer module. The first end of the AC orderly transfer module is connected to the first control guide end through the first control guide line, and the second end of the AC orderly transfer module is connected to the second control guide end through the second control guide line.

[0020] According to an embodiment of the present invention, the AC orderly switching module includes: an AC control unit and an AC switching unit; wherein:

[0021] The first signal input end of the AC switching unit is connected to the first end of the AC orderly switching module, and the first signal input end of the AC switching unit is used to receive the first power signal output by the AC charging pile;

[0022] The second signal input end of the AC switching unit is connected to the signal output end of the AC control unit, and the second signal input end of the AC switching unit is used to receive the second power signal output by the AC control unit;

[0023] The signal output end of the AC switching unit is connected to the second end of the AC ordered transfer module, and the AC switching unit is used to switch the connection between the first signal input end of the AC switching unit and the vehicle and the connection between the second signal input end of the AC switching unit and the vehicle, so that the AC ordered transfer module outputs the first power signal or the second power signal to the vehicle.

[0024] According to one embodiment of the present invention, the AC switching unit includes:

[0025] A first switch, wherein a first end of the first switch is connected to a first signal input end of the AC switching unit, a second end of the first switch is connected to a signal output end of the AC switching unit, and a control end of the first switch is connected to a first control end of the AC control unit;

[0026] a second switch, wherein a first end of the second switch is connected to a second signal input end of the AC switching unit, a second end of the second switch is connected to a signal output end of the AC switching unit, and a control end of the second switch is connected to a second control end of the AC control unit;

[0027] The switching states of the first switch and the second switch are opposite.

[0028] According to one embodiment of the present invention, the AC switching unit further includes:

[0029] a first diode, wherein an anode of the first diode is connected to a first control terminal of the AC switching unit, a cathode of the first diode is connected to a pulse width modulation signal detection terminal of the AC control unit, and the AC control unit is further used to monitor the first power signal;

[0030] a third switch, wherein a first end of the third switch is connected to the cathode of the first diode, a second end of the third switch is connected to the protective grounding terminal, and a control end of the third switch is connected to a third control end of the AC control unit;

[0031] The switching states of the third switch and the second switch are the same.

[0032] According to an embodiment of the present invention, the power supply device is a DC charging pile, the adapter is a DC adapter, and the load is a vehicle; wherein,

[0033] The charging socket is provided with a first protective grounding terminal, a first low-voltage auxiliary power supply positive terminal, a first low-voltage auxiliary power supply negative terminal, a first DC power supply positive terminal, a first DC power supply negative terminal, at least one first charging communication terminal and at least one third charging connection confirmation terminal;

[0034] The charging plug of the DC adapter is provided with a second protective grounding terminal, a second low-voltage auxiliary power positive terminal, a second low-voltage auxiliary power negative terminal, a second DC power positive terminal, a second DC power negative terminal, at least one second charging communication terminal and at least one fourth charging connection confirmation terminal;

[0035] The switching subsystem includes a protective grounding wire, a low-voltage auxiliary power supply positive connection wire, a low-voltage auxiliary power supply negative connection wire, a DC power supply positive connection, a DC power supply negative connection, at least one first communication line, at least one second communication line, at least one DC charging connection confirmation line and a DC orderly switching module. The communication input end of the DC orderly switching module is connected to the corresponding first charging communication end through the at least one first communication line, and the communication output end of the DC orderly switching module is connected to the corresponding second charging communication end through the at least one second communication line.

[0036] According to an embodiment of the present invention, the DC orderly transfer module includes: a DC control unit and a DC switching unit; wherein:

[0037] The communication input end of the DC switching unit is connected to the communication input end of the DC orderly switching module, the communication output end of the DC switching unit is connected to the communication output end of the DC orderly switching module, and the communication input end of the DC switching unit is used to receive the first power signal sent by the DC charging pile;

[0038] The communication input end of the DC control unit is connected to the communication input end of the DC orderly transfer module, the communication output end of the DC control unit is connected to the communication output end of the DC orderly transfer module, the control end of the DC control unit is connected to the controlled end of the DC switching unit, and the DC control unit is used to generate the second power signal;

[0039] The DC switching unit is used to switch on or off the connection between the communication output end of the DC charging pile and the communication input end of the vehicle, so that the DC orderly transfer module outputs the first power signal or the second power signal to the vehicle.

[0040] According to one embodiment of the present invention, the DC switching unit includes:

[0041] A fourth switch, wherein a first end of the fourth switch is connected to the communication input end of the DC switching unit, and a second end of the fourth switch is connected to the communication output end of the DC switching unit.

[0042] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0044] Figure 1 is a schematic diagram of a charging system according to an embodiment of the present invention;

[0045] Figure 2 is a schematic diagram of an AC orderly switching module in an AC adapter according to an embodiment of the present invention;

[0046] Figure 3 is a schematic diagram of an AC adapter according to an embodiment of the present invention;

[0047] Figure 4 is a schematic diagram of an AC charging system according to an embodiment of the present invention;

[0048] Figure 5 is a schematic diagram of a DC orderly transfer module in a DC converter according to an embodiment of the present invention;

[0049] Figure 6 is a schematic diagram of a DC adapter according to an embodiment of the present invention;

[0050] Figure 7 is a schematic diagram of a DC charging system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0051] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0052] A charging system according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0053] Figure 1 is a schematic diagram of a charging system according to an embodiment of the present invention.

[0054] like Figure 1 As shown, the charging system according to the embodiment of the present invention includes: a power supply device 100 , a converter 200 and a load 300 .

[0055] The adapter 200 is used to connect the power supply device 100 and the load 300. The power supply device 100 is used to output a first power signal. The adapter 200 includes a charging socket 210, a charging plug 220 and an adapter subsystem 230; wherein the charging socket 210 is used to connect the power supply device 100 and input a first power signal; the adapter subsystem 230 is used to receive or generate a second power signal; the charging plug 220 is used to connect the load 300 and output a first power signal or a second power signal. The load 300 is used to receive the first power signal or the second power signal and charge according to the first power signal or the second power signal.

[0056] In the embodiment of the present invention, the second power signal is received or generated by the switching subsystem 230 in the following manner:

[0057] The cloud server receives the second power signal and sends the second power signal to the switching subsystem 230;

[0058] Alternatively, the switching subsystem 230 receives the charging parameter signal sent by the cloud server, and generates a second power signal according to the first power signal and the charging parameter signal; wherein the charging parameter signal is generated by the cloud server according to the electricity price period information and / or the user preference information;

[0059] Alternatively, the switching subsystem 230 generates the second power signal according to the built-in parameters and the voltage period information.

[0060] In the embodiment of the present invention, before the adapter subsystem 230 fails or is initialized, the power signal output by the charging plug 220 is a first power signal; after the adapter subsystem 230 is powered on and initialized, the power signal output by the charging plug 220 is a second power signal.

[0061] It should be noted that different power supply devices 100 require different types of adapters 200. For example, when the power supply device 100 is an AC power supply device such as an AC charging pile, the required adapter 200 type is an AC adapter; when the power supply device 100 is a DC power supply device such as a DC charging pile, the required adapter 200 type is a DC adapter. The load 300 in the present invention is described by taking a vehicle as an example.

[0062] Combine the following Figure 2-Figure 4 The following describes an application scenario in which the power supply device 100 is an AC charging pile and the adapter 200 is an AC adapter.

[0063] In this embodiment, the switching subsystem 230 includes an L1 phase AC power line, an L2 phase AC power line, an L3 phase AC power line, a neutral line, an equipment ground line, an AC charging connection confirmation line, a first control guide line, a second control guide line and an AC orderly switching module. The first end of the AC orderly switching module is connected to the first control guide end through the first control guide line, and the second end of the AC orderly switching module is connected to the second control guide end through the second control guide line.

[0064] like Figure 2 As shown, the AC orderly switching module of the embodiment of the present invention includes: an AC switching unit 10 and an AC control unit 20 .

[0065] Among them, the first signal input end of the AC switching unit 10 is connected to the first end of the AC orderly transfer module, and the first signal input end of the AC switching unit 10 is used to receive the first pulse width modulation signal (first PWM signal, in the AC scenario, the first pulse width modulation signal is the first power signal) output by the AC charging pile. The second signal input end of the AC switching unit 10 is connected to the signal output end of the AC control unit 20, and the second signal input end of the AC switching unit 10 is used to receive the second pulse width modulation signal (second PWM signal, in the AC scenario, the second pulse width modulation signal is the second power signal) output by the AC control unit 20. The signal output end of the AC switching unit 10 is connected to the second end of the AC orderly transfer module, and the AC switching unit 10 is used to switch the connection between the first signal input end of the AC switching unit 10 and the vehicle and the connection between the second signal input end of the AC switching unit 10 and the vehicle, so that the AC orderly transfer module outputs the first pulse width modulation signal or the second pulse width modulation signal to the vehicle.

[0066] It should be noted that the solution for implementing the above-mentioned AC orderly switching module can be implemented through the following example 1 and example 2.

[0067] Example 1:

[0068] The AC switching unit 10 is used to connect the first signal input terminal of the AC switching unit 10 with the vehicle before the AC control unit 20 is powered on and initialized or when a fault occurs in the AC control unit 20, so that the AC charging pile outputs a first power signal to the vehicle through the AC orderly switching module.

[0069] The AC switching unit 10 is used to generate a second pulse width modulation signal according to the charging parameter signal and the first pulse width modulation signal after the AC control unit 20 is powered on and initialized, and to connect the second signal input terminal of the AC switching unit 10 with the vehicle, and the AC orderly switching module outputs the second pulse width modulation signal to the vehicle. The AC control unit 20 establishes a communication connection with the cloud server through the first communication unit, wherein the first communication unit may be a first wireless communication unit or a first wired communication unit, the first wireless communication unit supports at least one of 2G, 3G, 4G, 5G, LoRa (Long Range), Wi-Fi (Wireless Fidelity), Bluetooth, NB-IoT (Narrowband Internet of Things), and Zigbee, and the charging parameter signal is a signal generated by the cloud server and sent to the AC control unit 20. For example, the charging parameter signal is generated by the cloud server according to the electricity price period information, and when the electricity price period information indicates a valley price period or a parity period, the power corresponding to the second pulse width modulation signal generated by the AC control unit 20 according to the charging parameter signal and the first pulse width modulation signal is greater than the power corresponding to the second pulse width modulation signal generated by the AC control unit 20 according to the charging parameter signal and the first pulse width modulation signal when the electricity price period information indicates a peak price period; for another example, the charging parameter signal may be generated by the cloud server according to user preferences; for another example, the charging parameter signal may be generated by the cloud server according to electricity price period information and user preferences.

[0070] Example 2:

[0071] The AC control unit 20 is used to receive the charging parameter signal sent by the cloud server, and according to the charging parameter signal, control the AC switching unit 10, so that the AC switching unit 10 connects the connection between the first signal input terminal of the AC switching unit 10 and the vehicle or connects the connection between the second signal input terminal of the AC switching unit 10 and the vehicle, and the AC orderly switching module outputs the first pulse width modulation signal or the second pulse width modulation signal to the vehicle. The charging parameter signal includes electricity price period information. For example, when the electricity price period is a flat price period or a valley price period, the charging parameter signal generated by the cloud server includes a first signal, and the first signal is sent to the AC control unit 20. When the AC control unit 20 receives the first signal, it controls the AC switching unit 10 so that the AC switching unit 10 connects the connection between the first signal input terminal of the AC switching unit 10 and the vehicle, and the AC orderly switching module outputs a first pulse width modulation signal to the vehicle; when the electricity price period is a peak price period, the charging parameter signal generated by the cloud server includes a second signal, and the second signal is sent to the AC control unit 20. When the AC control unit 20 receives the second signal, it controls the AC switching unit 10 so that the AC switching unit 10 connects the connection between the second signal input terminal of the AC switching unit 10 and the vehicle, and the AC orderly switching module outputs a second pulse width modulation signal to the vehicle. The second pulse width modulation signal at this time is a pulse width modulation signal generated by the AC control unit 20 according to the second signal and the first pulse width modulation signal, and the power corresponding to the second pulse width modulation signal is less than the power corresponding to the first pulse width modulation signal.

[0072] Combine the following Figure 3 The AC orderly switching module of the present invention is described. It should be noted that: Figure 3 It is a schematic diagram of the AC orderly transfer module of Example 1.

[0073] like Figure 3 As shown, the AC switching unit 10 includes: a first switch K1 and a second switch K2. The first end of the first switch K1 is connected to the first signal input end of the AC switching unit 10, the second end of the first switch K1 is connected to the signal output end of the AC switching unit 10, and the control end of the first switch K1 is connected to the first control end of the AC control unit 20. The first end of the second switch K2 is connected to the second signal input end of the AC switching unit 10, the second end of the second switch K2 is connected to the signal output end of the AC switching unit 10, and the control end of the second switch K2 is connected to the second control end of the AC control unit 20.

[0074] In Example 1 of the present invention, in order to ensure the long-term reliable operation of the first switch K1 and the second switch K2 and extend their service life, measures can be taken to prevent the first switch K1 and the second switch K2 from switching frequently. For example, the first switch K1 can be selected as a normally closed switch and the second switch K2 can be selected as a normally open switch. After the AC control unit 20 is powered on and initialized, the first switch K1 is controlled to be disconnected and the second switch K2 is controlled to be closed, so that the AC switching unit 10 connects the connection between the second signal input end of the AC switching unit 10 and the vehicle, and the AC orderly switching module outputs a second pulse width modulation signal to the vehicle, so that the vehicle is charged according to the power corresponding to the second pulse width modulation signal. Before the AC control unit 20 is powered on and initialized or when the AC control unit 20 fails, the AC switching unit 10 connects the connection between the first signal input end of the AC switching unit 10 and the vehicle, so that the AC charging pile outputs the first pulse width modulation signal to the vehicle through the AC orderly switching module, so that the vehicle is charged according to the power corresponding to the first pulse width modulation signal.

[0075] In Example 2 of the present invention, there is no restriction on the types of the first switch K1 and the second switch K2. The AC control unit 20 is used to: receive a charging parameter signal issued by a cloud server; and control the first switch K1 and the second switch K2 according to the charging parameter signal, so that the AC switching unit 10 connects the connection between the first signal input terminal of the switching unit and the vehicle, or connects the connection between the second signal input terminal of the AC switching unit 10 and the vehicle. The charging parameter signal is a signal generated by the cloud server according to the electricity price period information and sent to the control unit; wherein, when the electricity price period information indicates a valley price period or a parity period, the charging parameter signal issued by the cloud server includes a first signal, at which time the AC control unit 20 controls the first switch K1 to close and the second switch K2 to open, so that the AC switching unit 10 connects the connection between the first signal input terminal of the AC switching unit 10 and the vehicle, and the AC orderly switching module outputs a first pulse width modulation signal to the vehicle. In this case, the power corresponding to the first pulse width modulation signal output by the AC charging pile can be directly used to charge the vehicle; in the case of electricity price period information When it is indicated as a peak price period, the charging parameter signal sent by the cloud server includes a second signal. At this time, the AC control unit 20 controls the first switch K1 to open and the second switch K2 to close, so that the AC switching unit 10 connects the second signal input terminal of the AC switching unit 10 with the vehicle, and generates a second pulse width modulation signal according to the second signal and the first pulse width modulation signal, so that the AC orderly switching module outputs the second pulse width modulation signal to the vehicle. In this case, the power corresponding to the first pulse width modulation signal output by the AC charging pile is no longer directly used to charge the vehicle, but the power corresponding to the second pulse width modulation signal is used to charge the vehicle.

[0076] like Figure 3 As shown, the AC switching unit 10 further includes: a first resistor R1 , wherein a first end of the first resistor R1 is connected to a second end of the second switch K2 , and a second end of the first resistor R1 is connected to a signal output end of the AC switching unit 10 .

[0077] like Figure 3 As shown, the AC switching unit 10 further includes: a diode D1 and a third switch K3. The anode of the diode D1 is connected to the first signal input terminal of the AC switching unit 10, and the cathode of the diode D1 is connected to the signal detection terminal of the AC control unit 20. The AC control unit 20 is also used to monitor the first pulse width modulation signal. The first end of the third switch K3 is connected to the cathode of the diode D1, the second end of the third switch K3 is connected to the protective grounding terminal, and the control end of the third switch K3 is connected to the third control end of the AC control unit 20.

[0078] In Example 1 of the present invention, after the control module 20 is powered on and initialized, the third switch K3 is controlled to be closed so that the first signal input terminal of the AC switching unit 10 is connected to the protective grounding terminal. Before the control module 20 is powered on and initialized or when a fault occurs in the control module 20, the third switch K3 is controlled to be opened.

[0079] In Example 2 of the present invention, when the electricity price period information indicates a valley price period or a parity price period, the charging parameter signal issued by the cloud server is a first signal, and at this time the control module 20 controls the third switch K3 to be disconnected, so that the first signal input terminal of the AC switching unit 10 is disconnected from the protective grounding terminal; when the electricity price period information indicates a peak price period, the charging parameter signal issued by the cloud server is a second signal, and at this time the control module 20 controls the third switch K3 to be closed, so that the first signal input terminal of the AC switching unit 10 is connected to the protective grounding terminal, so as to lead the first pulse width modulation signal to the protective grounding terminal, that is, the power corresponding to the first pulse width modulation signal is not used to charge the vehicle.

[0080] like Figure 3 As shown, the AC switching unit 10 further includes: a second resistor R2, a first end of the second resistor R2 is connected to a second end of the third switch K3, and a second end of the second resistor R2 is connected to a protective grounding end.

[0081] like Figure 3 As shown, the AC switching unit 10 further includes: a third resistor R3, a first end of the third resistor R3 is connected to the first end of the second resistor R2, and a second end of the third resistor R3 is connected to the second end of the second resistor R2.

[0082] It should be noted that Figure 3The switch states of the first switch K1 and the second switch K2 are opposite, and the switch states of the third switch K3 and the second switch K2 are the same. For example, the first switch K1 is a normally closed switch, and the second switch K2 and the third switch K3 are normally open switches. In this case, the first control terminal of the AC control unit 20, the second control terminal of the AC control unit 20, and the third control terminal of the AC control unit 20 can use a common control terminal of the AC control unit 20.

[0083] Next, combine Figure 3 The various interfaces on the AC orderly switching module according to the embodiment of the present invention are described.

[0084] like Figure 3 As shown, the AC adapter of the embodiment of the present invention is provided with a J1 interface, a J2 interface, a J3 interface, a J4 interface, a J5 interface, a J6 interface and a J7 interface.

[0085] The J1 interface is used for SWD program burning / simulation. There are interfaces 1-5 on the J1 interface; among them, interface 1 is the reset interface NRST; interface 2 is the chip power positive electrode 3.3V interface; interface 3 is the data signal SWDIO interface; interface 4 is the clock signal SWCLK interface; interface 5 is the chip power ground GND interface.

[0086] The J2 interface is used for TTL communication. There are interfaces 1-4 on the J2 interface. Interface 1 is the chip power positive 3.3V interface. Interface 2 is the TTL data sending Tx interface. Interface 3 is the TTL data receiving Rx interface. Interface 4 is the chip power ground GND interface.

[0087] The J3 interface is used to detect the PWM duty cycle and the input voltage value. There are interfaces 1 and 2 on the J3 interface; among them, interface 1 is the PWM signal input Pi interface, which is used for PWM signal input, including the input voltage range of ±12V (to PE) and the first PWM duty cycle (ie, the first pulse width modulation signal, 0-100); interface 2 is vacant.

[0088] The J4 interface is used to input the second PWM duty cycle (the second pulse width modulation signal, 0-100) and detect the input voltage value. There are interfaces 1 and 2 on the J4 interface; among them, interface 1 is the PWM signal input Po interface, which is used for PWM signal input, including the output voltage range of ±12V (to PE) and the second PWM duty cycle; interface 2 is vacant.

[0089] The J5 interface is used for input power supply (voltage range 198-236Vac) and voltage sampling (sampling error ±2%). There are 1-3 interfaces on the J5 interface; among them, interface 1 is the AC power live wire L interface; interface 2 is the AC power neutral line N interface; interface 3 is the protective ground PE interface.

[0090] The J6 interface is used for current sampling (error ±2%). There are interfaces 1 and 2 on the J6 interface; among them, interface 1 is the current sampling S1 interface, and interface 2 is the current sampling S2 interface. The current range can be set as needed, for example, the current range is 0-63A.

[0091] The J7 interface is a communication module interface, in which an antenna is provided, for example, an IPEX4 interface, which is used to establish a communication connection with a cloud server.

[0092] In the embodiment of the present invention, the resistance range of the first resistor R1 is 970-1030Ω, for example, 1000Ω; the resistance range of the second resistor R2 is 1261-1339Ω; the resistance range of the third resistor R3 is 2658-2822Ω, for example, 2740Ω. The diode D1 can have an equivalent diode voltage drop of 0.70V.

[0093] like Figure 3 As shown, the charging socket 210 of the AC adapter of the embodiment of the present invention is provided with a first control guide terminal, and the charging plug 230 of the AC adapter is provided with a second control guide terminal. The input end of the first control guide line serves as the CP end of the AC adapter, which is used to connect to the AC charging pile, and the output end of the first control guide line is connected to the No. 1 interface of the J3 interface; the input end of the second control guide line is connected to the No. 1 interface of the J4 interface, and the output end of the second control guide line serves as the CP' end of the AC adapter, which is used to connect to the vehicle.

[0094] like Figure 4 As shown, the charging socket 210 of the AC adapter of the embodiment of the present invention is also provided with a first L1-phase AC power terminal (L1 terminal), a first L2-phase AC power terminal (L2 terminal), a first L3-phase AC power terminal (L3 terminal), a first neutral terminal (N terminal), a first device ground terminal (PE terminal) and a first charging connection confirmation terminal (CC terminal). The charging plug 230 of the AC adapter is provided with a second L1-phase AC power terminal (L1' terminal), a second L2-phase AC power terminal (L2' terminal), a second L3-phase AC power terminal (L3' terminal), a second neutral terminal (N' terminal), a second device ground terminal (PE' terminal) and a second charging connection confirmation terminal (CC' terminal).

[0095] Among them, the first L1 phase AC power terminal (L1 terminal), the first L2 phase AC power terminal (L2 terminal), the first L3 phase AC power terminal (L3 terminal), the first neutral terminal (N terminal), the first device ground terminal (PE terminal) and the first charging connection confirmation terminal (CC terminal) are used to connect the AC charging device, and the second L1 phase AC power terminal (L1' terminal), the second L2 phase AC power terminal (L2' terminal), the second L3 phase AC power terminal (L3' terminal), the second neutral terminal (N' terminal), the second device ground terminal (PE' terminal) and the second charging connection confirmation terminal (CC' terminal) are used to connect the vehicle. For example, when the voltage provided by the AC charging pile is 220V, the AC power terminal can only use one first L1 phase AC power terminal, and the other two interfaces such as the first L2 phase AC power terminal and the first L3 phase AC power terminal are vacant, and correspondingly only the second L1 phase AC power terminal is used, while the second L2 phase AC power terminal and the second L3 phase AC power terminal are vacant. For example, when the voltage provided by the AC charging pile is 380V, it is necessary to use the first L1 phase AC power supply terminal, the first L2 phase AC power supply terminal, the first L3 phase AC power supply terminal, the second L1 phase AC power supply terminal, the second L2 phase AC power supply terminal, and the second L3 phase AC power supply terminal at the same time.

[0096] In one embodiment of the present invention, the L1-phase AC power line is connected between the first L1-phase AC power terminal (L1 terminal) and the second L1-phase AC power terminal (L1' terminal), the L2-phase AC power line is connected between the first L2-phase AC power terminal (L2 terminal) and the second L2-phase AC power terminal (L2' terminal), the L3-phase AC power line is connected between the first L3-phase AC power terminal (L3 terminal) and the second L3-phase AC power terminal (L3' terminal), the neutral line is connected between the first neutral line terminal (N terminal) and the second neutral line terminal (N' terminal), the device ground line is connected between the first device ground terminal (PE terminal) and the second device ground terminal (PE' terminal), and the charging connection confirmation line is connected between the first charging connection confirmation terminal (CC terminal) and the second charging connection confirmation terminal (CC' terminal).

[0097] It should be noted that the ports on one side of the AC adapter include live wire connection terminals (L1, L2, L3), neutral wire connection terminals N, CC terminals and CP terminals, and the ports on the other side of the AC adapter include live wire connection terminals (L1', L2', L3'), neutral wire connection terminals N', CC' terminals and CP' terminals.

[0098] like Figure 4As shown, the AC charging system of an embodiment of the present invention includes: an AC charging pile, an AC adapter and a vehicle. An AC charging pile controller is provided in the AC charging pile, and an on-board charger and a vehicle control device are provided in the vehicle. When the AC adapter is actually used, the AC adapter can be connected to the charging port of the vehicle first, and then the charging gun can be connected to the AC adapter. It should be noted that a locking device is provided between the charging socket 210 of the AC adapter and the connecting end of the AC charging gun, and a mechanical lock is provided between the charging plug 230 of the AC converter and the connecting end of the vehicle.

[0099] Combine the following Figure 5-Figure 7 The following describes an application scenario in which the power supply device 100 is a DC charging pile and the adapter 200 is a DC adapter.

[0100] In this embodiment, the switching subsystem 230 includes a protective grounding line, a low-voltage auxiliary power supply positive connection line, a low-voltage auxiliary power supply negative connection line, a DC power supply positive connection, a DC power supply negative connection, at least one first communication line, at least one second communication line, at least one DC charging connection confirmation line and a DC orderly switching module. The communication input end of the DC orderly switching module is connected to the corresponding first charging communication end through at least one first communication line, and the communication output end of the DC orderly switching module is connected to the corresponding second charging communication end through at least one second communication line.

[0101] like Figure 5 The DC orderly transfer module of the embodiment of the present invention includes: a DC switching unit 40 and a DC control unit 30 .

[0102] Among them, the communication input end of the DC switching unit 40 is connected to the communication input end of the DC orderly transfer module, the communication output end of the DC switching unit 40 is connected to the communication output end of the DC orderly transfer module, and the communication input end of the DC switching unit 40 is used to receive the first power signal emitted by the DC charging pile; the communication input end of the DC control unit 30 is connected to the communication input end of the DC orderly transfer module, the communication output end of the DC control unit 30 is connected to the communication output end of the DC orderly transfer module, the control end of the DC control unit 30 is connected to the controlled end of the DC switching unit 40, and the DC control unit 30 is used to generate a second power signal; the DC switching unit 40 is used to switch on or off the connection between the communication output end of the DC charging pile and the communication input end of the vehicle, so that the DC orderly transfer module outputs the first power signal or the second power signal to the vehicle.

[0103] It should be noted that the following Example 3 and Example 4 may be used to implement the above-mentioned DC orderly transfer module solution.

[0104] Example 3:

[0105] The DC switching unit 40 is used to connect the communication output end of the DC charging pile and the communication input end of the vehicle before the DC control unit 30 is powered on and initialized or when a fault occurs in the DC control unit 30, so that the DC charging pile outputs a first power signal to the vehicle.

[0106] The DC switching unit 40 is used to generate a second power signal after the DC control unit 30 is powered on and initialized. For example, the second power signal can be generated according to the first power signal and the charging parameter signal sent by the cloud server (the power corresponding to the second power signal is less than the power corresponding to the first power signal), and the connection between the communication output end of the DC charging pile and the communication input end of the vehicle is cut off, so that the DC orderly switching module outputs the second power signal to the vehicle. Among them, the DC control unit 30 establishes a communication connection with the cloud server through a second communication unit (not shown in the figure), wherein the second communication unit is a second wired communication unit or a second wireless communication unit, and the second wireless communication unit supports at least one of 2G, 3G, 4G, 5G, Lora, Wi-Fi, Bluetooth, narrowband Internet of Things NBIoT, and Zigbee. Among them, the charging parameter signal can be a signal generated according to the electricity price period information. When the electricity price period information is a valley price period or a parity period, the power corresponding to the second power signal generated by the DC control unit 30 according to the charging parameter signal and the first power signal is greater than the power corresponding to the second power signal generated by the DC control unit 30 according to the charging parameter signal and the first power signal when the electricity price period information indicates a peak price period.

[0107] Example 4:

[0108] The DC control unit 30 is used to receive the charging parameter signal sent by the cloud server, and according to the charging parameter signal, control the DC switching unit 40 to switch the DC switching unit 40 to switch the connection between the communication output end of the DC charging pile and the communication input end of the vehicle, and the DC orderly switching module outputs the first power signal to the vehicle, or cuts off the connection between the communication output end of the DC charging pile and the communication input end of the vehicle by the DC switching unit 10, and the DC orderly switching module outputs the second power signal to the vehicle. The charging parameter signal is a signal generated according to the electricity price period information. For example, when the electricity price period information is a parity period or a valley period, the charging parameter signal generated by the cloud server includes a first signal, and the first signal is sent to the DC control unit 30. When the DC control unit 30 receives the first signal, it controls the DC switching unit 40, such as controlling the DC switching unit 40 to close, so that the connection between the communication output end of the DC charging pile and the communication input end of the vehicle is connected, and the DC charging pile outputs a first power signal to the vehicle; when the electricity price period information is a peak period, the charging parameter signal generated by the cloud server includes a second signal, and the second signal is sent to the DC control unit 30. When the DC control unit 30 receives the second signal, it controls the DC switching unit 40, such as controlling the DC switching unit 40 to disconnect, so that the connection between the communication output end of the DC charging pile and the communication input end of the vehicle is disconnected, and the DC orderly switching module outputs a second power signal to the vehicle. Among them, the second power signal at this time is a power signal generated by the DC control unit 30 according to the second signal and the first power signal, and the power corresponding to the second power signal is less than the power corresponding to the first power signal.

[0109] Continue to refer to Figure 5 The DC orderly transfer module of the present invention is described.

[0110] like Figure 5 As shown, the DC switching unit 40 includes: a fourth switch K. The first end of the fourth switch K is connected to the communication input end of the DC switching unit 40, the second end of the fourth switch K is connected to the communication output end of the DC switching unit 40, and the third end of the fourth switch K is connected to the controlled end of the DC switching unit 40.

[0111] In Example 3 of the present invention, in order to ensure the long-term reliable operation of the fourth switch K and extend its service life, measures are taken to prevent the switch from switching frequently. For example, the fourth switch K can be set as a normally closed switch.

[0112] When the fourth switch K is a normally closed switch, the DC switching unit 40 is used to connect the communication output end of the DC charging pile and the communication input end of the vehicle before the power-on initialization of the DC control unit 30 is completed or when a failure occurs in the DC control unit 30, so that the DC charging pile outputs a first power signal to the vehicle, and the vehicle can be charged according to the first power signal.

[0113] After the DC control unit 30 is powered on and initialized, a second power signal is generated according to the charging parameter signal sent by the cloud server and the first power signal sent by the DC charging pile, and the fourth switch K is controlled to be disconnected to disconnect the connection between the communication output end of the DC charging pile and the communication input end of the vehicle, and the DC orderly switching module outputs the second power signal to the vehicle.

[0114] In Example 4 of the present invention, the DC control unit 30 is used to receive the charging parameter signal sent by the cloud server, and according to the charging parameter signal, control the fourth switch K, so that the DC switching unit 40 switches the connection between the communication output end of the DC charging pile and the communication input end of the vehicle, and the DC orderly switching module outputs the first power signal to the vehicle, or cuts off the connection between the communication output end of the DC charging pile and the communication input end of the vehicle, and the DC orderly switching module outputs the second power signal to the vehicle. The charging parameter signal is a signal generated according to the electricity price period information. For example, when the electricity price period information is a parity period or a valley period, the charging parameter signal generated by the cloud server includes a first signal, and the first signal is sent to the DC control unit 30. When the DC control unit 30 receives the first signal, it controls the fourth switch K to close, so that the connection between the communication output end of the DC charging pile and the communication input end of the vehicle is connected, and the DC charging pile outputs a first power signal to the vehicle; when the electricity price period information is a peak period, the charging parameter signal generated by the cloud server includes a second signal, and the second signal is sent to the DC control unit 30. When the DC control unit 30 receives the second signal, it controls the fourth switch K to open, so that the connection between the communication output end of the DC charging pile and the communication input end of the vehicle is disconnected, so that the DC orderly switching module outputs a second power signal to the vehicle. At this time, the second power signal is a power signal generated by the DC control unit 30 based on the second signal and the first power signal.

[0115] In an embodiment of the present invention, the communication line between the DC charging pile and the vehicle is one of the following:

[0116] CAN bus, LIN bus, RS-485 bus, I2C bus, SPI bus.

[0117] Combine the following Figure 6 , taking the communication line between the DC charging pile and the vehicle as the CAN bus as an example for explanation.

[0118] like Figure 6 As shown, the communication input end of the DC switching unit 40 includes a CAN-H communication input end and a CAN-L communication input end, which are respectively connected to the communication output end of the DC charging pile (including the CAN-H communication output end and the CAN-L communication output end) and the communication input end of the DC control unit 30 (including the CAN-H communication input end and the CAN-L communication input end) to achieve two-way communication based on the CAN bus protocol. The communication output end of the DC switching unit 40 also includes a CAN-H communication output end and a CAN-L communication output end, which are respectively connected to the communication input end of the vehicle (including the CAN-H communication input end and the CAN-L communication input end) and the communication output end of the DC control unit 30 (including the CAN-H communication output end and the CAN-L communication output end), ensuring reliable transmission of data between various parts of the system.

[0119] like Figure 6 As shown, when the DC charging pile is a DC charging pile, the vehicle is a vehicle, and the communication line is CAN, the DC switching unit 40 includes a fifth switch K11 and a sixth switch K12. Among them, the first end of the fifth switch K11 is connected to the CAN-H communication input end of the DC switching unit 40, and the second end of the fifth switch K11 is connected to the CAN-H communication output end of the DC switching unit 40; the first end of the sixth switch K12 is connected to the CAN-L communication input end of the DC switching unit 40, and the second end of the sixth switch K12 is connected to the CAN-L communication output end of the DC switching unit 40. The switching states of the fifth switch K11 and the sixth switch K12 are the same. The fifth switch K11 and the sixth switch K12 are both normally closed switches. The controlled ends of the fifth switch K11 and the sixth switch K12 are connected to the control end of the DC control unit 30.

[0120] Combine the following Figure 6 The interface on the DC adapter of the embodiment of the present invention is further described.

[0121] like Figure 6 As shown, the DC adapter of the embodiment of the present invention is provided with a J1 interface, a J2 interface, a J3 interface, a J4 interface, a J5 interface and a J6 interface.

[0122] The J1 interface is used for SWD program burning / simulation. There are interfaces 1-5 on the J1 interface; among them, interface 1 is the reset interface NRST; interface 2 is the chip power positive electrode 3.3V interface; interface 3 is the data signal SWDIO interface; interface 4 is the clock signal SWCLK interface; interface 5 is the chip power ground GND interface.

[0123] The J2 interface is used for TTL communication. There are interfaces 1-4 on the J2 interface. Interface 1 is the chip power positive 3.3V interface. Interface 2 is the TTL data sending Tx interface. Interface 3 is the TTL data receiving Rx interface. Interface 4 is the chip power ground GND interface.

[0124] The J3 interface is used to communicate with the DC charging pile. There are interfaces 1 and 2 on the J3 interface. Interface 1 is the CAN-H interface, and interface 2 is the CAN-L interface.

[0125] The J4 interface is used to communicate with the vehicle. There are interfaces 1 and 2 on the J4 interface. Interface 1 is the CAN-H interface, and interface 2 is the CAN-L interface.

[0126] The J5 interface is used for input power. There are 1-3 interfaces on the J5 interface; among them, interface 1 is the input power + interface (that is, the positive pole of the input power); interface 2 is the input power - interface (that is, the negative pole of the input power); interface 3 is the protective grounding PE interface.

[0127] The J6 interface is a communication unit interface, in which an antenna is provided, for example, an IPEX4 interface, which is used to establish a communication connection with a cloud server.

[0128] In the embodiment of the present invention, the DC orderly switching module can be installed in the DC adapter. Figure 7 As shown, the charging socket 210 of the DC adapter of the embodiment of the present invention is provided with a first protective grounding terminal (PE terminal), a first low-voltage auxiliary power positive terminal (A+ terminal), a first low-voltage auxiliary power negative terminal (A- terminal), a first DC power positive terminal (DC+ terminal), a first DC power negative terminal (DC- terminal), at least one first charging communication terminal, and at least one third charging connection confirmation terminal. The charging plug 230 of the DC adapter is provided with a second protective grounding terminal (PE' terminal), a second low-voltage auxiliary power positive terminal (A'+ terminal), a second low-voltage auxiliary power negative terminal (A'- terminal), a second DC power positive terminal (DC'+ terminal), a second DC power negative terminal (DC'- terminal), at least one second charging communication terminal, and at least one fourth charging connection confirmation terminal. Among them, the first protective grounding terminal, the first low-voltage auxiliary power supply positive terminal, the first low-voltage auxiliary power supply negative terminal, the first DC power supply positive terminal, the first DC power supply negative terminal, at least one first charging communication terminal and at least one third charging connection confirmation terminal are used to connect to the DC charging pile; the second protective grounding terminal, the second low-voltage auxiliary power supply positive terminal, the second low-voltage auxiliary power supply negative terminal, the second DC power supply positive terminal, the second DC power supply negative terminal, at least one second charging communication terminal and at least one fourth charging connection confirmation terminal are used to connect to the vehicle; the DC orderly switching module is connected between at least one first charging communication terminal and one second charging communication terminal.

[0129] It should be noted that at least the first charging communication terminal includes an S+ terminal and an S- terminal, wherein the S+ terminal can be a high-level signal terminal CAN_H of CAN terminal communication, and the S- terminal can be a low-level signal terminal CAN_L of CAN terminal communication. At least one third charging connection confirmation terminal includes a CC1 terminal and a CC2 terminal. At least one second charging communication terminal includes an S'+ terminal and an S'- terminal, wherein the S'+ terminal can be a high-level signal terminal CAN_H' of CAN terminal communication, and the S'- terminal can be a low-level signal terminal CAN_L' of CAN terminal communication. At least one fourth charging connection confirmation terminal includes a CC1' terminal and a CC2' terminal.

[0130] like Figure 7 As shown, the DC charging system of the embodiment of the present invention includes: a DC charging pile, a DC adapter and a vehicle. When the DC adapter is actually used, the DC adapter can be connected to the charging port of the vehicle first, and then the charging gun can be connected to the DC adapter. It should be noted that the DC adapter is provided with a mechanical lock at the end connected to the vehicle socket.

[0131] In summary, the charging system of the embodiment of the present invention includes a power supply device, an adapter and a load, wherein the power supply device is used to output a first power signal; the adapter includes a charging socket, a charging plug and an adapter subsystem; wherein the charging socket is used to connect the power supply device and input the first power signal; the adapter subsystem is used to receive or generate a second power signal; the charging plug is used to connect the load and output the first power signal or the second power signal; the load is used to receive the first power signal or the second power signal, and charge according to the first power signal or the second power signal. Therefore, the present invention improves the charging system by adding an adapter between the charging pile and the vehicle without modifying the vehicle and the charging pile, thereby improving the intelligence level of the charging system and improving the user experience.

[0132] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0133] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

Claims

1. A charging system, characterized in that: include: A power supply device, an adapter and a load, wherein the load is a vehicle, and the adapter is used to connect the power supply device and the load; wherein, The power supply device is used to output a first power signal; The adapter includes a charging socket, a charging plug and an adapter subsystem; wherein the charging socket is used to connect the power supply device and input the first power signal; the adapter subsystem is used to receive or generate the second power signal; the charging plug is used to connect the load and output the first power signal or the second power signal; The load is used to receive the first power signal or the second power signal, and to charge according to the first power signal or the second power signal; When the power supply device is an AC charging pile, the adapter is an AC adapter, and the charging socket is provided with a first L1-phase AC power terminal, a first L2-phase AC power terminal, a first L3-phase AC power terminal, a first neutral terminal, a first equipment ground terminal, a first charging connection confirmation terminal and a first control guide terminal; The charging plug is provided with a second L1-phase AC power terminal, a second L2-phase AC power terminal, a second L3-phase AC power terminal, a second neutral line terminal, a second equipment ground terminal, a second charging connection confirmation terminal and a second control guide terminal; The switching subsystem includes an L1-phase AC power line, an L2-phase AC power line, an L3-phase AC power line, a neutral line, an equipment ground line, an AC charging connection confirmation line, a first control guide line, a second control guide line, and an AC orderly switching module. The first end of the AC orderly switching module is connected to the first control guide end through the first control guide line, and the second end of the AC orderly switching module is connected to the second control guide end through the second control guide line. The AC orderly transfer module includes: an AC control unit and an AC switching unit, wherein a first signal input end of the AC switching unit is connected to a first end of the AC orderly transfer module, and the first signal input end of the AC switching unit is used to receive the first power signal output by the AC charging pile; a second signal input end of the AC switching unit is connected to a signal output end of the AC control unit, and the second signal input end of the AC switching unit is used to receive the second power signal output by the AC control unit; a signal output end of the AC switching unit is connected to a second end of the AC orderly transfer module, and the AC switching unit is used to switch and connect the connection between the first signal input end of the AC switching unit and the vehicle and the connection between the second signal input end of the AC switching unit and the vehicle, so that the AC orderly transfer module outputs the first power signal or the second power signal to the vehicle; The AC switching unit includes: a first switch and a second switch, wherein the first end of the first switch is connected to the first signal input end of the AC switching unit, the second end of the first switch is connected to the signal output end of the AC switching unit, and the control end of the first switch is connected to the first control end of the AC control unit; the first end of the second switch is connected to the second signal input end of the AC switching unit, the second end of the second switch is connected to the signal output end of the AC switching unit, and the control end of the second switch is connected to the second control end of the AC control unit; wherein the switching states of the first switch and the second switch are opposite.

2. The charging system according to claim 1, characterized in that: The second power signal is received or generated by the switching subsystem in the following manner: The cloud server generates the second power signal, and sends the second power signal to the switching subsystem; Alternatively, the switching subsystem receives a charging parameter signal sent by a cloud server, and generates the second power signal according to the first power signal and the charging parameter signal; wherein the charging parameter signal is generated by the cloud server according to electricity price period information and / or user preference information; Alternatively, the switching subsystem generates the second power signal according to built-in parameters and voltage period information.

3. The charging system according to claim 1, characterized in that: The charging plug outputting the first power signal or the second power signal includes: Before the switching subsystem fails or is initialized, the charging plug outputs the first power signal; After the switching subsystem is powered on and initialized, the charging plug outputs the second power signal.

4. The charging system according to claim 1, characterized in that: The AC switching unit also includes: a first diode, wherein an anode of the first diode is connected to a first control terminal of the AC switching unit, a cathode of the first diode is connected to a pulse width modulation signal detection terminal of the AC control unit, and the AC control unit is further used to monitor the first power signal; a third switch, wherein a first end of the third switch is connected to the cathode of the first diode, a second end of the third switch is connected to the protective grounding terminal, and a control end of the third switch is connected to a third control end of the AC control unit; The switching states of the third switch and the second switch are the same.

5. The charging system according to claim 1, characterized in that: When the power supply device is a DC charging pile, the adapter is a DC adapter; wherein, The charging socket is provided with a first protective grounding terminal, a first low-voltage auxiliary power supply positive terminal, a first low-voltage auxiliary power supply negative terminal, a first DC power supply positive terminal, a first DC power supply negative terminal, at least one first charging communication terminal and at least one third charging connection confirmation terminal; The charging plug of the DC adapter is provided with a second protective grounding terminal, a second low-voltage auxiliary power positive terminal, a second low-voltage auxiliary power negative terminal, a second DC power positive terminal, a second DC power negative terminal, at least one second charging communication terminal and at least one fourth charging connection confirmation terminal; The switching subsystem includes a protective grounding wire, a low-voltage auxiliary power supply positive connection wire, a low-voltage auxiliary power supply negative connection wire, a DC power supply positive connection, a DC power supply negative connection, at least one first communication line, at least one second communication line, at least one DC charging connection confirmation line and a DC orderly switching module. The communication input end of the DC orderly switching module is connected to the corresponding first charging communication end through the at least one first communication line, and the communication output end of the DC orderly switching module is connected to the corresponding second charging communication end through the at least one second communication line.

6. The charging system according to claim 5, characterized in that: The DC orderly transfer module comprises: a DC control unit and a DC switching unit; wherein: The communication input end of the DC switching unit is connected to the communication input end of the DC orderly switching module, the communication output end of the DC switching unit is connected to the communication output end of the DC orderly switching module, and the communication input end of the DC switching unit is used to receive the first power signal sent by the DC charging pile; The communication input end of the DC control unit is connected to the communication input end of the DC orderly transfer module, the communication output end of the DC control unit is connected to the communication output end of the DC orderly transfer module, the control end of the DC control unit is connected to the controlled end of the DC switching unit, and the DC control unit is used to generate the second power signal; The DC switching unit is used to switch on or off the connection between the communication output end of the DC charging pile and the communication input end of the vehicle, so that the DC orderly transfer module outputs the first power signal or the second power signal to the vehicle.

7. The charging system according to claim 6, characterized in that: The DC switching unit comprises: A fourth switch, wherein a first end of the fourth switch is connected to the communication input end of the DC switching unit, and a second end of the fourth switch is connected to the communication output end of the DC switching unit.

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