A charging control method, device and non-vehicle-mounted charger

Abstract

The application provides a charging control method, device and non-vehicle charger. The charging control method comprises the following steps: obtaining a reservation charging start control instruction according to a reservation charging time of a direct-current charging device; controlling a connection confirmation relay on a connection confirmation signal line at a pile end in a vehicle interface and a state of an auxiliary relay between an auxiliary power supply and a vehicle controller to change from a first state to a second state to generate a vehicle reservation charging trigger signal according to the reservation charging start control instruction; and controlling the vehicle and the direct-current charging device to perform a charging process according to the vehicle reservation charging trigger signal. The scheme can realize reservation charging of a direct-current charging pile and can reduce charging cost by using a difference between peak and valley electricity prices.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to a charging control method, device, and off-board charger. Background Technology

[0002] With the widespread application of new energy vehicles, electric vehicles have entered thousands of households. Currently, most home charging stations for private car owners are AC charging stations. The charging process involves AC power from the power grid passing through the AC charging station and the vehicle's on-board charger (OBC) before finally reaching the battery. When car owners need to schedule charging, they can set a scheduled charging time on the app and send the scheduling command to the charging station. When the scheduled time arrives, the AC charging station controls the CP signal to wake up the vehicle and begin the charging process, thus utilizing the difference between peak and off-peak electricity prices to reduce charging costs.

[0003] With the development of low-power DC charging technology, more and more car manufacturers are gradually phasing out models without on-board chargers (OBCs). Consequently, home charging devices for these models are shifting from AC charging stations to DC charging stations. However, low-power DC charging technology is still in its early stages and has not yet been widely adopted. Furthermore, DC charging interfaces do not yet support scheduled charging. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a charging control method, device, and off-board charger. It enables scheduled charging for DC charging.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0006] A charging control method, comprising:

[0007] Based on the scheduled charging time of the DC charging device, obtain the scheduled charging start control command;

[0008] According to the scheduled charging start control command, when the state of the connection confirmation relay on the connection confirmation signal line of the charging pile in the vehicle interface changes from the first state to the second state, a vehicle scheduled charging trigger signal is generated.

[0009] Based on the vehicle's scheduled charging trigger signal, the system controls the vehicle and the DC charging device to perform the charging process.

[0010] Optionally, based on the scheduled charging time of the DC charging device, a scheduled charging start control command is obtained, including:

[0011] Based on the scheduled charging time of the DC charging device set by the user through the scheduled charging application, a scheduled charging start control command is generated; or

[0012] Receive the scheduled charging start control command issued by the scheduled charging application based on the scheduled charging time of the DC charging device; or,

[0013] Based on the scheduled charging time set by the user through the DC charging device on the vehicle, a scheduled charging start control command is generated.

[0014] Optionally, based on the scheduled charging time of the DC charging device set by the user through the scheduled charging application, a scheduled charging start control command is generated, including:

[0015] Receive the scheduled charging time of the DC charging device set and sent by the user through the scheduled charging application;

[0016] Start the timer according to the scheduled charging time;

[0017] When the countdown time of the timer reaches the scheduled charging time, a scheduled charging start control command is generated.

[0018] Optionally, the system receives a scheduled charging start control command issued by the scheduled charging application based on the scheduled charging time of the DC charging device, including:

[0019] The system receives a scheduled charging start control command sent by the scheduled charging application when the countdown time reaches the scheduled charging time, wherein the scheduled charging time is set by the user through the scheduled charging application.

[0020] Optionally, based on the scheduled charging time set by the user through the DC charging device on the vehicle, a scheduled charging start control command is generated, including:

[0021] Receive the scheduled charging time for the DC charging device set and sent by the user through the vehicle terminal;

[0022] Start the timer according to the scheduled charging time;

[0023] When the countdown time of the timer reaches the scheduled charging time, a scheduled charging start control command is generated.

[0024] Optionally, according to the scheduled charging start control command, the connection confirmation relay on the connection confirmation signal line at the charging pile end in the vehicle interface is controlled, and when the state of the auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller changes from a first state to a second state, a vehicle scheduled charging trigger signal is generated, including:

[0025] According to the scheduled charging start control command, the first and second connection confirmation relays on the connection confirmation signal line of the charging pile in the vehicle interface, as well as the first and second auxiliary relays on the connection signal line between the auxiliary power supply and the vehicle controller, are disconnected and then closed again to generate a vehicle scheduled charging trigger signal.

[0026] Wherein, the first terminal of the first connection confirmation relay is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the first connection confirmation relay is electrically connected to the first charging connection confirmation line in the vehicle interface.

[0027] The first terminal of the second connection confirmation relay is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the second connection confirmation relay is electrically connected to the second charging connection confirmation line in the vehicle interface.

[0028] The first terminal of the first auxiliary relay is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the first auxiliary relay is electrically connected to the low-voltage auxiliary power supply line between the auxiliary power supply and the vehicle controller.

[0029] The first terminal of the second auxiliary relay is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the second auxiliary relay is electrically connected to the low-voltage auxiliary power supply line between the auxiliary power supply and the vehicle controller.

[0030] Optionally, based on the vehicle's scheduled charging trigger signal, the vehicle and the DC charging device are controlled to perform a charging process, including:

[0031] Based on the vehicle's scheduled charging trigger signal, the system controls the vehicle and the DC charging device to perform vehicle interface connection confirmation, DC charging pile self-test, charging preparation, charging phase, and charging completion phase.

[0032] Embodiments of the present invention also provide a charging control device, comprising:

[0033] The acquisition module is used to obtain the scheduled charging start control command based on the scheduled charging time of the DC charging device;

[0034] The processing module is used to control the connection confirmation relay on the connection confirmation signal line of the charging pile in the vehicle interface, and to generate a vehicle reservation charging trigger signal when the state of the auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller changes from the first state to the second state, according to the reservation charging start control command.

[0035] Based on the vehicle's scheduled charging trigger signal, the system controls the vehicle and DC charging device to perform the charging process.

[0036] Embodiments of the present invention also provide a DC charging device, including: an auxiliary power supply and a non-vehicle-mounted charger controller, wherein the non-vehicle-mounted charger controller includes the charging control device described above.

[0037] Embodiments of the present invention also provide a non-vehicle charger, including the DC charging device described above.

[0038] The above-described solution of the present invention has at least the following beneficial effects:

[0039] The above-described solution of the present invention obtains a scheduled charging start control command based on the scheduled charging time of the DC charging device; according to the scheduled charging start control command, it controls the connection confirmation relay on the connection confirmation signal line at the charging pile end in the vehicle interface, and when the state of the auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller changes from a first state to a second state, it generates a vehicle scheduled charging trigger signal; according to the vehicle scheduled charging trigger signal, it controls the vehicle and the DC charging device to perform the charging process; thereby realizing scheduled charging of DC charging, which can reduce charging costs by utilizing the difference between peak and off-peak electricity prices. Attached Figure Description

[0040] Figure 1 This is a schematic flowchart of the charging control method of the present invention;

[0041] Figure 2 This is a schematic diagram of the circuit connection structure for DC charging control of the present invention;

[0042] Figure 3 This is a schematic diagram of the first specific implementation process of the DC charging control method of the present invention;

[0043] Figure 4 This is a schematic diagram of the second specific implementation process of the DC charging control method of the present invention;

[0044] Figure 5 This is a schematic diagram of the third specific implementation process of the DC charging control method of the present invention;

[0045] Figure 6 This is a schematic diagram of the module structure of the charging control device of the present invention. Detailed Implementation

[0046] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0047] like Figure 1As shown, an embodiment of the present invention proposes a charging control method, including:

[0048] Step 11: Obtain the scheduled charging start control command based on the scheduled charging time of the DC charging device;

[0049] Step 12: According to the scheduled charging start control command, control the connection confirmation relay on the connection confirmation signal line of the charging pile in the vehicle interface, and when the state of the auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller changes from the first state to the second state, generate a vehicle scheduled charging trigger signal.

[0050] Step 13: Based on the vehicle scheduled charging trigger signal, control the vehicle and DC charging device to carry out the charging process.

[0051] In this embodiment of the invention, a scheduled charging start control command is obtained based on the scheduled charging time of the DC charging device; according to the scheduled charging start control command, the connection confirmation relay on the connection confirmation signal line at the charging pile end in the vehicle interface is controlled, and when the state of the auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller changes from a first state to a second state, a vehicle scheduled charging trigger signal is generated; according to the vehicle scheduled charging trigger signal, the vehicle and the DC charging device are controlled to perform the charging process; thereby realizing scheduled charging of DC charging, which can utilize the difference between peak and off-peak electricity prices to reduce charging costs.

[0052] In an optional embodiment of the present invention, step 11 may include:

[0053] Step 111: Generate a scheduled charging start control command based on the scheduled charging time set by the user through the scheduled charging application; or

[0054] Step 112: Receive the scheduled charging start control command issued by the scheduled charging application; or,

[0055] Step 113: Generate a scheduled charging start control command based on the scheduled charging time set by the user through the vehicle terminal.

[0056] Step 111 may include:

[0057] Step 1111: Receive the scheduled charging time of the DC charging device set and sent by the user through the scheduled charging application;

[0058] Step 1112: Start the timer according to the scheduled charging time;

[0059] Step 1113: When the countdown time of the timer reaches the scheduled charging time, a scheduled charging start control command is generated.

[0060] Accordingly, step 12 may include:

[0061] Step 121: According to the scheduled charging start control command, control the first connection confirmation relay and the second connection confirmation relay on the connection confirmation signal line of the charging pile end in the vehicle interface, as well as the first auxiliary relay and the second auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller, to generate a vehicle scheduled charging trigger signal when they are disconnected and then closed again.

[0062] Wherein, the first terminal of the first connection confirmation relay KCC2- is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the first connection confirmation relay KCC2- is electrically connected to the first charging connection confirmation line CC2- in the vehicle interface.

[0063] The first terminal of the second connection confirmation relay KCC2+ is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the second connection confirmation relay is electrically connected to the second charging connection confirmation line CC2+ in the vehicle interface.

[0064] The first terminal of the first auxiliary relay K3 is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the first auxiliary relay K3 is electrically connected to the low-voltage auxiliary power line A+ between the auxiliary power supply and the vehicle controller.

[0065] The first terminal of the second auxiliary relay K4 is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the second auxiliary relay K4 is electrically connected to the low-voltage auxiliary power supply line A- between the auxiliary power supply and the vehicle controller.

[0066] like Figure 2 and Figure 3 As shown, this embodiment may include the following in its specific implementation:

[0067] Step 31: The user sets the scheduled charging time in the APP (scheduled charging application);

[0068] Step 32: After the settings are completed, the APP will send the scheduled charging time to the charging station (i.e., the non-vehicle-mounted charger) through the platform.

[0069] Step 33: The charging station receives the scheduled charging command and begins the countdown.

[0070] Step 34, when the countdown time is up, the non-vehicle-mounted charger controller disconnects the first connection confirmation relay KCC2- and the second connection confirmation relay KCC2+, the first auxiliary relay K3 and the second auxiliary relay K4 of the auxiliary power supply A+ and A-;

[0071] Step 35: Re-close relays KCC2+ and KCC2- at the pile end, and relays K3 and K4 for auxiliary power supply A+ and A-;

[0072] Step 36, the vehicle is awakened;

[0073] Step 37: The vehicle and charging station enter the normal charging process.

[0074] In another optional embodiment of the present invention, step 112 may include:

[0075] Step 1121 receives a scheduled charging start control command issued by the scheduled charging application when the countdown time reaches the scheduled charging time, wherein the scheduled charging time is set by the user through the scheduled charging application.

[0076] Accordingly, step 12 may include:

[0077] Step 121: According to the scheduled charging start control command, control the first connection confirmation relay and the second connection confirmation relay on the connection confirmation signal line of the charging pile end in the vehicle interface, as well as the first auxiliary relay and the second auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller, to generate a vehicle scheduled charging trigger signal when they are disconnected and then closed again.

[0078] Wherein, the first terminal of the first connection confirmation relay KCC2- is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the first connection confirmation relay KCC2- is electrically connected to the first charging connection confirmation line CC2- in the vehicle interface.

[0079] The first terminal of the second connection confirmation relay KCC2+ is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the second connection confirmation relay is electrically connected to the second charging connection confirmation line CC2+ in the vehicle interface.

[0080] The first terminal of the first auxiliary relay K3 is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the first auxiliary relay K3 is electrically connected to the low-voltage auxiliary power line A+ between the auxiliary power supply and the vehicle controller.

[0081] The first terminal of the second auxiliary relay K4 is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the second auxiliary relay K4 is electrically connected to the low-voltage auxiliary power supply line A- between the auxiliary power supply and the vehicle controller.

[0082] like Figure 2 and Figure 4 As shown, this embodiment may include the following in its specific implementation:

[0083] Step 41: The user sets the scheduled charging time in the APP.

[0084] Step 42: After the settings are completed, the APP will start the countdown for the scheduled charging time;

[0085] Step 43: When the scheduled time arrives, the APP will send a charging command to the charging station.

[0086] Step 44: After receiving the charging start command, the off-board charger controller disconnects relays KCC2+ and KCC2-, and relays K3 and K4 of auxiliary power supply A+ and A-.

[0087] Step 45: Re-close the connection at the pile end to confirm relays KCC2+ and KCC2-, and relays K3 and K4 for auxiliary power supply A+ and A-;

[0088] Step 46, the vehicle is awakened;

[0089] Step 47: The vehicle and charging station enter the normal charging process.

[0090] In another optional embodiment of the present invention, step 113 may include:

[0091] Step 1131: Receive the scheduled charging time for the DC charging device set and sent by the user through the vehicle terminal;

[0092] Step 1132: Start the timer according to the scheduled charging time;

[0093] Step 1133: When the countdown time of the timer reaches the scheduled charging time, a scheduled charging start control command is generated.

[0094] Accordingly, step 12 may include:

[0095] Step 121: According to the scheduled charging start control command, control the first connection confirmation relay and the second connection confirmation relay on the connection confirmation signal line of the charging pile end in the vehicle interface, as well as the first auxiliary relay and the second auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller, to generate a vehicle scheduled charging trigger signal when they are disconnected and then closed again.

[0096] Wherein, the first terminal of the first connection confirmation relay KCC2- is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the first connection confirmation relay KCC2- is electrically connected to the first charging connection confirmation line CC2- in the vehicle interface.

[0097] The first terminal of the second connection confirmation relay KCC2+ is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the second connection confirmation relay is electrically connected to the second charging connection confirmation line CC2+ in the vehicle interface.

[0098] The first terminal of the first auxiliary relay K3 is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the first auxiliary relay K3 is electrically connected to the low-voltage auxiliary power line A+ between the auxiliary power supply and the vehicle controller.

[0099] The first terminal of the second auxiliary relay K4 is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the second auxiliary relay K4 is electrically connected to the low-voltage auxiliary power supply line A- between the auxiliary power supply and the vehicle controller.

[0100] like Figure 2 and Figure 5 As shown, this embodiment may include the following in its specific implementation:

[0101] Step 51: The user sets the scheduled charging time on the vehicle's infotainment system;

[0102] Step 52: After the settings are completed, the vehicle will send the scheduled charging time to the charging station via the CAN bus. After a certain period of time, the vehicle will enter a sleep state.

[0103] Step 53: The charging station receives the scheduled charging command and begins the countdown.

[0104] Step 54, when the countdown time is up, the off-board charger controller disconnects the connection confirmation relays KCC2+ and KCC2-, and the auxiliary power supply relays K3 and K4 from the pile end;

[0105] Step 55: Re-close the connection at the pile end to confirm relays KCC2+ and KCC2-, and relays K3 and K4 for auxiliary power supply A+ and A-;

[0106] Step 56, the vehicle is awakened;

[0107] Step 57: The vehicle and charging station enter the normal charging process.

[0108] In an optional embodiment of the present invention, step 13 may include:

[0109] Step 131: Based on the vehicle scheduled charging trigger signal, control the vehicle and DC charging device to perform vehicle interface connection confirmation, DC charging pile self-test, charging preparation, charging stage, and charging end stage.

[0110] In practice, the off-board charger (i.e., DC charging pile) and the vehicle pass through... Figure 2 The circuit connection shown in the diagram is as follows: S is a normally closed switch associated with the DC charging gun head. When the button on the charging gun head is pressed, switch S is turned on; U1 and U2 are 12V pull-up voltages; R1 to R5 are resistors with a resistance of approximately 1000 ohms; R1, R2, and R3 are on the charging gun, and R4 and R5 are on the vehicle socket.

[0111] The vehicle interface connection confirmation stage includes: pressing the charging gun button, inserting it into the vehicle socket, and then releasing the charging gun button. The charging pile's detection point 1 will detect the level change from 12V to 6V to 4V. Once 4V is detected, the charging pile will determine that the charging gun has been successfully inserted, the vehicle interface is fully connected, and lock the electronic lock in the charging gun to prevent the charging gun from falling off.

[0112] The self-test phase of the DC charging pile includes: After the vehicle interface is fully connected, the charging pile will close K3 and K4 to conduct the low-voltage auxiliary power supply circuit, supplying power to the electric vehicle control device. After the vehicle receives power, it will determine whether the vehicle interface is connected based on the voltage at detection point 2. If the voltage value is 6V, the vehicle device will start periodically sending communication handshake messages. Then, K1 and K2 will be closed for insulation testing. Insulation testing checks the insulation performance of the DC line to ensure the safety of subsequent charging processes. After the insulation test is completed, the discharge circuit will be activated to discharge energy and K1 and K2 will be disconnected, while periodically sending communication handshake packets will begin.

[0113] The charging readiness stage includes: the configuration stage between the vehicle and the DC charging station; the vehicle controls K5 and K6 to close, making the charging circuit conductive; after the charging station detects that the battery voltage at the vehicle end is normal, it closes K1 and K2, then the DC charging line is conductive, and the electric vehicle is ready to start charging.

[0114] The charging phase includes: During the charging phase, the vehicle sends battery charging demand parameters to the charging station in real time. The charging station will adjust the charging voltage and current in real time according to the parameters, and the two sides will send their respective status information, including the charging station output voltage and current, vehicle battery voltage and current, SOC, etc.

[0115] The charging termination phase includes: the vehicle determines whether to end charging based on whether the BMS has reached the charging state or upon receiving a "charging station termination message" from the charging station. If the above charging termination conditions are met, the vehicle will send a "vehicle termination message," and after confirming the charging current is less than 5A, disconnect charging stations K5 and K6, then meet the charging termination conditions set by the operator. Alternatively, upon receiving a vehicle termination message from the vehicle, the vehicle will send a termination message to the charging station and control the charging station to stop charging. After confirming the charging current is less than 5A, disconnect K1 and K2, re-engage the discharge circuit, and then disconnect K3 and K4.

[0116] In the above embodiments of the present invention, the connection confirmation signal of the charging pile CC2 in the vehicle interface is led out and connected to the off-board charger controller through relays KCC2+ and KCC2-. The off-board charger controller controls the state of the relays. Combined with K3 and K4, the vehicle is woken up when the scheduled time arrives. This realizes scheduled charging for DC charging and can reduce charging costs by taking advantage of the difference between peak and off-peak electricity prices.

[0117] like Figure 6 As shown, embodiments of the present invention also provide a charging control device 60, including:

[0118] The acquisition module 61 is used to obtain the scheduled charging start control command based on the scheduled charging time of the DC charging device;

[0119] Processing module 62 is used to control the connection confirmation relay on the connection confirmation signal line of the charging pile in the vehicle interface according to the scheduled charging start control command, and to generate a vehicle scheduled charging trigger signal when the state of the auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller changes from the first state to the second state.

[0120] Based on the vehicle's scheduled charging trigger signal, the system controls the vehicle and DC charging device to perform the charging process.

[0121] Optionally, when the acquisition module 61 obtains the scheduled charging start control command based on the scheduled charging time of the DC charging device, it is specifically used for:

[0122] Based on the scheduled charging time of the DC charging device set by the user through the scheduled charging application, a scheduled charging start control command is generated; or

[0123] Receive the scheduled charging start control command issued by the scheduled charging application based on the scheduled charging time of the DC charging device; or,

[0124] Based on the scheduled charging time set by the user through the DC charging device on the vehicle, a scheduled charging start control command is generated.

[0125] Optionally, when the acquisition module 61 generates a scheduled charging start control command based on the scheduled charging time of the DC charging device set by the user through the scheduled charging application, it is specifically used for:

[0126] Receive the scheduled charging time of the DC charging device set and sent by the user through the scheduled charging application;

[0127] Start the timer according to the scheduled charging time;

[0128] When the countdown time of the timer reaches the scheduled charging time, a scheduled charging start control command is generated.

[0129] Optionally, when receiving the scheduled charging start control command issued by the scheduled charging application based on the scheduled charging time of the DC charging device, the acquisition module 61 is specifically used for:

[0130] The system receives a scheduled charging start control command sent by the scheduled charging application when the countdown time reaches the scheduled charging time, wherein the scheduled charging time is set by the user through the scheduled charging application.

[0131] Optionally, when the acquisition module 61 generates a scheduled charging start control command based on the scheduled charging time set by the user through the DC charging device at the vehicle end, it is specifically used for:

[0132] Receive the scheduled charging time for the DC charging device set and sent by the user through the vehicle terminal;

[0133] Start the timer according to the scheduled charging time;

[0134] When the countdown time of the timer reaches the scheduled charging time, a scheduled charging start control command is generated.

[0135] Optionally, when the processing module 62 generates a vehicle reservation charging trigger signal by controlling the connection confirmation relay on the connection confirmation signal line at the charging pile end in the vehicle interface and the auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller to change from the first state to the second state according to the reservation charging start control command, it is specifically used for:

[0136] According to the scheduled charging start control command, the first and second connection confirmation relays on the connection confirmation signal line of the charging pile in the vehicle interface, as well as the first and second auxiliary relays on the connection signal line between the auxiliary power supply and the vehicle controller, are disconnected and then closed again to generate a vehicle scheduled charging trigger signal.

[0137] Wherein, the first terminal of the first connection confirmation relay is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the first connection confirmation relay is electrically connected to the first charging connection confirmation line in the vehicle interface.

[0138] The first terminal of the second connection confirmation relay is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the second connection confirmation relay is electrically connected to the second charging connection confirmation line in the vehicle interface.

[0139] The first terminal of the first auxiliary relay is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the first auxiliary relay is electrically connected to the low-voltage auxiliary power supply line between the auxiliary power supply and the vehicle controller.

[0140] The first terminal of the second auxiliary relay is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the second auxiliary relay is electrically connected to the low-voltage auxiliary power supply line between the auxiliary power supply and the vehicle controller.

[0141] Optionally, when the processing module 62 controls the charging process of the vehicle and the DC charging device according to the vehicle's scheduled charging trigger signal, it is specifically used for:

[0142] Based on the vehicle's scheduled charging trigger signal, the system controls the vehicle and the DC charging device to perform vehicle interface connection confirmation, DC charging pile self-test, charging preparation, charging phase, and charging completion phase.

[0143] It should be noted that this device is the same as the method described above. All implementations in the above method embodiments are applicable to the embodiments of this device and can achieve the same technical effect.

[0144] Embodiments of the present invention also provide a DC charging device, including: an auxiliary power supply and a non-vehicle-mounted charger controller, wherein the non-vehicle-mounted charger controller includes the charging control device described above. All implementations in the above device embodiments are applicable to the embodiments of this DC charging device and can achieve the same technical effects.

[0145] Embodiments of the present invention also provide a non-vehicle-mounted charger, including the DC charging device as described above. All implementations in the above device embodiments are applicable to the embodiments of this DC charging device and can achieve the same technical effects.

[0146] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A charging control method, characterized in that, include: Based on the scheduled charging time of the DC charging device, obtain the scheduled charging start control command; According to the scheduled charging start control command, when the state of the connection confirmation relay on the connection confirmation signal line of the charging pile in the vehicle interface changes from the first state to the second state, a vehicle scheduled charging trigger signal is generated. Based on the vehicle scheduled charging trigger signal, control the vehicle and the DC charging device to carry out the charging process; The step of controlling the connection confirmation relay on the connection confirmation signal line at the charging pile end in the vehicle interface, and the auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller, to change from a first state to a second state according to the scheduled charging start control command, generates a vehicle scheduled charging trigger signal, including: According to the scheduled charging start control command, the first and second connection confirmation relays on the connection confirmation signal line of the charging pile in the vehicle interface, as well as the first and second auxiliary relays on the connection signal line between the auxiliary power supply and the vehicle controller, are disconnected and then closed again to generate a vehicle scheduled charging trigger signal. Wherein, the first terminal of the first connection confirmation relay (KCC2-) is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the first connection confirmation relay (KCC2-) is electrically connected to the first charging connection confirmation line (CC2-) in the vehicle interface; The first terminal of the second connection confirmation relay (KCC2+) is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the second connection confirmation relay is electrically connected to the second charging connection confirmation line (CC2+) in the vehicle interface. The first terminal of the first auxiliary relay (K3) is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the first auxiliary relay (K3) is electrically connected to the low-voltage auxiliary power supply line (A+) between the auxiliary power supply and the vehicle controller. The first terminal of the second auxiliary relay (K4) is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the second auxiliary relay (K4) is electrically connected to the low-voltage auxiliary power supply line (A-) between the auxiliary power supply and the vehicle controller.

2. The charging control method according to claim 1, characterized in that, Based on the scheduled charging time of the DC charging device, a scheduled charging start control command is obtained, including: Based on the scheduled charging time of the DC charging device set by the user through the scheduled charging application, a scheduled charging start control command is generated; or Receive the scheduled charging start control command issued by the scheduled charging application based on the scheduled charging time of the DC charging device; or, Based on the scheduled charging time set by the user through the DC charging device on the vehicle, a scheduled charging start control command is generated.

3. The charging control method according to claim 2, characterized in that, Based on the scheduled charging time of the DC charging device set by the user through the scheduled charging application, a scheduled charging start control command is generated, including: Receive the scheduled charging time of the DC charging device set and sent by the user through the scheduled charging application; Start the timer according to the scheduled charging time; When the countdown time of the timer reaches the scheduled charging time, a scheduled charging start control command is generated.

4. The charging control method according to claim 2, characterized in that, Receive the scheduled charging start control command issued by the scheduled charging application based on the scheduled charging time of the DC charging device, including: The system receives a scheduled charging start control command sent by the scheduled charging application when the countdown time reaches the scheduled charging time, wherein the scheduled charging time is set by the user through the scheduled charging application.

5. The charging control method according to claim 2, characterized in that, Based on the scheduled charging time set by the user through the DC charging device on the vehicle, a scheduled charging start control command is generated, including: Receive the scheduled charging time for the DC charging device set and sent by the user through the vehicle terminal; Start the timer according to the scheduled charging time; When the countdown time of the timer reaches the scheduled charging time, a scheduled charging start control command is generated.

6. The charging control method according to claim 1, characterized in that, Based on the vehicle's scheduled charging trigger signal, control the vehicle and the DC charging device to perform the charging process, including: Based on the vehicle's scheduled charging trigger signal, the system controls the vehicle and the DC charging device to perform vehicle interface connection confirmation, DC charging pile self-test, charging preparation, charging phase, and charging completion phase.

7. A charging control device, characterized in that, include: The acquisition module is used to obtain the scheduled charging start control command based on the scheduled charging time of the DC charging device; The processing module is used to control the connection confirmation relay on the connection confirmation signal line of the charging pile in the vehicle interface, and to generate a vehicle reservation charging trigger signal when the state of the auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller changes from the first state to the second state, according to the reservation charging start control command. Based on the vehicle scheduled charging trigger signal, control the vehicle and DC charging device to carry out the charging process; When the processing module generates a vehicle reservation charging trigger signal by controlling the connection confirmation relay on the connection confirmation signal line at the charging pile end in the vehicle interface and the auxiliary relay on the connection signal line between the auxiliary power supply and the vehicle controller to change their states from a first state to a second state according to the reservation charging start control command, the specific uses are as follows: According to the scheduled charging start control command, the first and second connection confirmation relays on the connection confirmation signal line of the charging pile in the vehicle interface, as well as the first and second auxiliary relays on the connection signal line between the auxiliary power supply and the vehicle controller, are disconnected and then closed again to generate a vehicle scheduled charging trigger signal. Wherein, the first terminal of the first connection confirmation relay (KCC2-) is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the first connection confirmation relay (KCC2-) is electrically connected to the first charging connection confirmation line (CC2-) in the vehicle interface; The first terminal of the second connection confirmation relay (KCC2+) is electrically connected to the off-board charger controller of the DC charging device, and the second terminal of the second connection confirmation relay is electrically connected to the second charging connection confirmation line (CC2+) in the vehicle interface. The first terminal of the first auxiliary relay (K3) is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the first auxiliary relay (K3) is electrically connected to the low-voltage auxiliary power supply line (A+) between the auxiliary power supply and the vehicle controller. The first terminal of the second auxiliary relay (K4) is electrically connected to the auxiliary power supply of the DC charging device, and the second terminal of the second auxiliary relay (K4) is electrically connected to the low-voltage auxiliary power supply line (A-) between the auxiliary power supply and the vehicle controller.

8. A DC charging device, characterized in that, include: An auxiliary power supply and a non-vehicle-mounted charger controller, wherein the non-vehicle-mounted charger controller includes the charging control device as described in claim 7.

9. A non-vehicle-mounted charger, characterized in that, Includes the DC charging device as described in claim 8.

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