Power supply device, control and guidance circuit, and charging control method

Abstract

The present invention discloses a power supply device, a control and guidance circuit, and a charging control method. The power supply device includes: a first connection confirmation terminal, a first resistor, and a power supply device controller. The first resistor is connected between a first preset power supply and the first connection confirmation terminal; a series connection of a first switch and a second resistor is connected in parallel with the first resistor; the first connection confirmation terminal is provided with a first detection point. When the power supply device makes a reservation for charging, the power supply device controller can obtain a reservation charging instruction and control the first switch to close according to the instruction; obtain a detection signal of the first detection point and control the first switch to open according to the detection signal so that the power supply device enters a reservation charging state; at the reserved time, control the first switch to close to wake up the vehicle; obtain a detection signal of the first detection point and control the first switch to open to charge the vehicle. Thus, reservation charging at the power supply device end is realized, and more vehicle reservation requirements of users can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle charging, and particularly to a power supply device, a control and guidance circuit, and a charging control method. Background Art

[0002] Currently, for the reservation charging of a vehicle, generally, a power supply device such as a charging pile is reserved, that is, the charging pile is reserved in advance. Then, when the vehicle arrives at the location where the reserved charging pile is located, a connection is established between the vehicle and the reserved charging pile to achieve charging. However, in actual life, after the vehicle is connected to the charging pile, the user may not need to charge immediately. At this time, the above technology cannot meet the user's such demand. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent. For this reason, an object of the present invention is to provide a power supply device to achieve reservation charging after the vehicle is connected to the power supply device, thereby meeting more vehicle reservation requirements of users.

[0004] A second object of the present invention is to provide a control and guidance circuit.

[0005] A third object of the present invention is to provide a charging control method.

[0006] A fourth object of the present invention is to provide another charging control method.

[0007] To achieve the above object, an embodiment of the first aspect of the present invention provides a power supply device, including: a first connection confirmation terminal and a first resistor, where a first end of the first resistor is connected to a first preset power supply, and a second end of the first resistor is connected to the first connection confirmation terminal; a first switch and a second resistor, the first switch and the second resistor are connected in series, and the series-connected first switch and second resistor are connected in parallel with the first resistor; wherein, a first detection point is provided on the first connection confirmation terminal; the power supply device further includes a power supply device controller, and the power supply device controller is configured to obtain a reservation charging instruction and control the first switch to close according to the reservation charging instruction.

[0008] When the power supply device in the embodiment of the present invention performs reservation charging, it can obtain a reservation charging instruction and control the first switch to close according to the instruction; obtain a detection signal of the first detection point and control the first switch to open according to the detection signal to enable the power supply device to enter the reservation charging state; when the reservation time is reached after the power supply device enters the reservation charging state, control the first switch to close to wake up the vehicle; obtain a detection signal of the first detection point and control the first switch to open to charge the vehicle. Thus, reservation charging at the power supply device end is achieved, and more vehicle reservation requirements of users can be met.

[0009] To achieve the above object, an embodiment of the second aspect of the present invention provides a control and guidance circuit, including a first control and guidance module and a second control and guidance module. The first control and guidance module is disposed on a power supply device, and the second control and guidance module is disposed on a vehicle. The first control and guidance module includes a first resistor, a first switch, and a second resistor. A first end of the first resistor is connected to a first preset power supply, and a second end of the first resistor is connected to a first connection confirmation terminal of the power supply device. The first switch and the second resistor are connected in series, and the series-connected first switch and second resistor are connected in parallel with the first resistor. The second control and guidance module includes a fifth resistor. A first end of the fifth resistor is connected to a body ground terminal of the vehicle, and a second end of the fifth resistor is connected to a first connection confirmation terminal of the vehicle. Wherein, a first detection point is provided at the first connection confirmation terminal of the power supply device, and a second detection point is provided at the first connection confirmation terminal of the vehicle. The power supply device further includes a power supply device controller, and the power supply device controller is configured to obtain a reservation charging instruction and control the first switch to close according to the reservation charging instruction.

[0010] The control and guidance circuit according to the embodiment of the present invention can implement reservation charging of the power supply device, thereby meeting more reservation charging requirements of users for the vehicle and improving the vehicle charging experience of users.

[0011] To achieve the above object, an embodiment of the third aspect of the present invention provides a charging control method, which is applied to the power supply device in the above embodiment. The method includes the following steps: obtaining a reservation charging instruction and controlling the first switch to close according to the reservation charging instruction; obtaining a detection signal of the first detection point and controlling the first switch to open according to the detection signal of the first detection point, so that the power supply device enters a reservation charging state; when the reservation time is reached after the power supply device enters the reservation charging state, controlling the first switch to close to wake up the vehicle; obtaining a detection signal of the first detection point and controlling the first switch to open to charge the vehicle according to the detection signal of the first detection point.

[0012] The charging control method according to the embodiment of the present invention can implement reservation charging at the power supply device end, thereby meeting more reservation charging requirements of users for the vehicle and improving the vehicle charging experience of users.

[0013] To achieve the above object, an embodiment of the fourth aspect of the present invention provides another charging control method, which is applied to the control and guidance circuit in the above embodiment. The method includes the following steps: The power supply device controller obtains a reservation charging instruction and controls the first switch to close according to the reservation charging instruction; The vehicle controller obtains the detection signal at the second detection point and controls the vehicle to enter the reservation charging state according to the detection signal at the second detection point.

[0014] The charging control method according to the embodiment of the present invention can realize reservation charging at the power supply device end, so as to meet the user's more reservation charging requirements for the vehicle and improve the user's vehicle charging experience.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a power supply device according to the first embodiment of the present invention;

[0017] Figure 2 is a schematic diagram of a power supply device according to the second embodiment of the present invention;

[0018] Figure 3 is a schematic diagram of a power supply device according to the third embodiment of the present invention;

[0019] Figure 4 is a schematic diagram of a power supply device according to the fourth embodiment of the present invention;

[0020] Figure 5 is a schematic flowchart of reservation charging of a power supply device according to a specific embodiment of the present invention;

[0021] Figure 6 is a flowchart of a charging control method according to an embodiment of the present invention;

[0022] Figure 7 is a schematic diagram of a control and guidance circuit according to the first embodiment of the present invention;

[0023] Figure 8 is a schematic diagram of a control and guidance circuit according to the second embodiment of the present invention;

[0024] Figure 9 is a schematic diagram of a control and guidance circuit according to the third embodiment of the present invention;

[0025] Figure 10 is a schematic diagram of a control and guidance circuit according to the fourth embodiment of the present invention;

[0026] Figure 11 is a flowchart of a charging control method according to another embodiment of the present invention;

[0027] Figures 12 - 17 Schematic diagrams of a vehicle and a power supply device according to some embodiments of the present invention. Detailed implementation manners

[0028] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention.

[0029] Below, reference is made to the attached Figures 1 - 17 to describe a power supply device, a control and guidance circuit, and a charging control method according to embodiments of the present invention.

[0030] Figure 1 Schematic structural diagram of a power supply device according to an embodiment of the present invention.

[0031] As Figure 1 shown, the power supply device 200 includes: a first connection confirmation terminal CC1, a first resistor R1, a first switch S1, a second resistor R6, and a power supply device controller.

[0032] Referring to Figure 1 , a first end of the first resistor R1 is connected to a first preset power supply U1, and a second end of the first resistor R1 is connected to the first connection confirmation terminal CC1 of the power supply device 200; the first switch S1 and the second resistor R6 are connected in series, and the series-connected first switch S1 and second resistor R6 are connected in parallel with the first resistor R1. Among them, a first detection point, denoted as detection point 1, is provided on the first connection confirmation terminal CC1 of the power supply device 200; the first connection confirmation terminal CC1 of the power supply device 200 is used to connect to the first connection confirmation terminal CC1 of the vehicle 100, and a detection point 3 may be provided on the first connection confirmation terminal CC1 of the vehicle 100. The power supply device controller is configured to obtain a reservation charging instruction and control the first switch S1 to close according to the reservation charging instruction.

[0033] Specifically, referring to Figure 1, when the power supply device 200 makes a reservation for charging, the power supply device controller of the power supply device 200 obtains a reservation charging instruction and controls the first switch S1 to close according to the reservation charging instruction; obtains the detection signal of the first detection point (i.e., detection point 1), and controls the first switch S1 to open according to the detection signal of detection point 1, so that the power supply device 200 enters the reservation charging state; when the reservation time is reached after the power supply device 200 enters the reservation charging state, controls the first switch S1 to close to wake up the vehicle 100; obtains the detection signal of detection point 1, and controls the first switch S1 to open according to the detection signal of detection point 1 to charge the vehicle 100. Wherein, the detection signal of the first detection point can be a voltage signal; the reservation time can be a time period, that is, it is reserved to charge the vehicle 100 after a certain time from the current moment; it can also be a time point, that is, when the moment reaches this time point, start charging the vehicle 100.

[0034] It should be noted that the reservation timing or timing of the power supply device 200 starts when the power supply device 200 enters the reservation charging state, rather than when the power supply device 200 receives the reservation charging instruction.

[0035] As an example, the reservation charging instruction may include at least one of: reservation time, reservation power, reservation charging power, reservation battery temperature, reservation charging amount.

[0036] Specifically, the reservation time can be a time period or a time point. The reservation power can be to charge to a certain power, such as charging to full charge, that is, the SOC reaches 100%; it can also be to charge a certain amount of power. The reservation charging power can include reservation charging current and reservation charging voltage. For example, when a vehicle's charging process includes constant voltage charging and constant current charging, the reservation charging current can be the current during constant current charging, and the reservation charging voltage can be the voltage during constant voltage charging. The reservation battery temperature can be the temperature when the vehicle starts charging or the temperature when charging ends. For example, when the weather is cold and the vehicle needs to heat the battery before starting charging, when the temperature of the battery reaches the reservation battery temperature, the vehicle starts charging; another example is that when the weather is hot or the battery itself has a problem of easy heat generation, during the vehicle's charging process, when the temperature of the battery reaches a relatively high reservation battery temperature, control the vehicle to end charging. The reservation charging amount refers to the amount of money required to charge the vehicle. For example, the amount is calculated from the start of the vehicle's charging, and when the amount reaches the reservation charging amount, control the vehicle to end charging. Through the above settings of the content of the reservation charging instruction, the diversity of vehicle pre-charging is increased, and different charging needs of users can be met.

[0037] Specifically, refer to Figure 1, a resistor R4 is provided in the vehicle 100. The resistor R4 is connected between the body ground terminal PE of the vehicle 100 and the first connection confirmation terminal CC1 of the vehicle 100. When the power supply device 200 is not connected to the vehicle 100, the voltage provided by the voltage U1 at the detection point 1; when the power supply device 200 is connected to the vehicle 100, the resistor R1 and the resistor R4 are in series, and the voltage at the detection point 1 decreases to a certain voltage, which can be calculated by the resistance values of the resistors R1 and R4 and the voltage provided by the power supply U1. After the first switch S1 is controlled to close, the resistor R6 is in parallel with the resistor R1, and then in series with the resistor R4, and the voltage at the detection point 1 becomes larger; according to the voltage change at the detection point 1, the switch S1 can be controlled to disconnect, and the voltage at the detection point 1 decreases to the first voltage, so that the power supply device 200 enters the scheduled charging state, that is, the power supply device 200 enters the scheduled charging waiting, and at the same time the power supply device 200 starts timing or starts timing. During the entire reservation waiting process, the vehicle 100 can be in a sleep state to reduce the power consumption of the vehicle 100. When the power supply device 200 times or times to the reservation time, the first switch S1 can be controlled to close, and the voltage at the detection point 1 rises from the first voltage to the second voltage, and the vehicle 100 is awakened by the rising edge. Obtain the voltage change at the detection point 1, control the switch S1 to disconnect according to the change, the scheduled charging is successful, and then enter the charging process for the vehicle 100. After entering the charging process, the charging control can be performed according to the parameters in the scheduled charging instruction.

[0038] Thus, the power supply device 200 can achieve scheduled charging, thereby meeting more scheduled charging requirements of the user for the vehicle 100 and improving the charging experience of the user for the vehicle 100.

[0039] In an embodiment of the present invention, as Figure 2 shown, the power supply device 200 may further include: a device ground terminal PE, a third resistor R2, and a second switch S. The third resistor R2 and the second switch S are connected in series between the device ground terminal PE and the first connection confirmation terminal CC1 of the power supply device 200.

[0040] Specifically, in this embodiment, when the power supply device 200 is not connected to the vehicle 100, the voltage at the detection point 1 is the voltage provided by U1; when the power supply device 200 is connected to the vehicle 100, the resistor R1 and the resistor R4 are in series, and the voltage at the detection point 1 decreases to a certain voltage, which can be calculated from the resistance values of the resistors R1, R2, R4 and the voltage provided by the power supply U1. After the first switch S1 is closed, the resistor R6 is in parallel with the resistor R1, and after being connected in parallel, it is in series with the parallel-connected resistors R2 and R4, and the voltage at the detection point 1 increases; furthermore, the switch S1 can be controlled to disconnect according to the detection information at the detection point 1, and the voltage at the detection point 1 decreases to the first voltage, so that the power supply device 200 enters the scheduled charging state, that is, the power supply device 200 enters the scheduled charging waiting, and at the same time, the power supply device 200 starts timing or starts timing. During the entire scheduled waiting process, the vehicle 100 can be in a sleep state to reduce the power consumption of the vehicle 100. When the power supply device 200 reaches the scheduled time during timing or timing, the first switch S1 can be controlled to close, and the voltage at the detection point 1 rises from the first voltage to the second voltage, and the vehicle 100 is awakened by the rising edge. Obtain the voltage change at the detection point 1, control the switch S1 to disconnect according to this change, the scheduled charging is successful, and then enter the charging process for the vehicle 100. After entering the charging process, the charging can be controlled according to the parameters in the scheduled charging instruction.

[0041] It should be noted that Figure 2 the embodiment shown Figure 1 is different from the embodiment shown in that a resistor R2 and a switch S are provided in the power supply device 200. Therefore, during the scheduled charging process of the power supply device 200, Figure 2 the detection signal at the detection point 1 in the embodiment shown Figure 1 is different from the detection signal at the detection point 1 in the embodiment shown, specifically, the voltage value corresponding to the detection signal is different.

[0042] In an embodiment of the present invention, as Figure 3 shown, the power supply device 200 further includes: a second connection confirmation terminal CC2 of the power supply device 200 and a fourth resistor R3. The first end of the fourth resistor R3 is connected to the device ground terminal PE, and the second end of the fourth resistor R3 is connected to the second connection confirmation terminal CC2 of the power supply device 200. Correspondingly, a resistor R5 can also be provided in the vehicle 100, and the resistor R5 is connected between the preset power supply U2 and the second connection confirmation terminal CC2 of the vehicle 100.

[0043] Specifically, in this embodiment, refer to Figure 3When the power supply device 200 is not connected to the vehicle 100, the voltage at the detection point 2 is the voltage provided by U2. When the power supply device 200 is connected to the vehicle 100, the resistor R3 and the resistor R5 are in series, and the voltage at the detection point 2 becomes smaller. Therefore, if the voltage at the detection point 2 is less than the voltage provided by the power supply U2, it indicates that the second connection confirmation terminal CC2 of the vehicle 100 is connected to the second connection confirmation terminal CC2 of the power supply device 200.

[0044] That is to say, Figure 3 The difference between the shown embodiment and Figure 2 the shown embodiment is that a resistor R3 is further provided in the power supply device 200, and a resistor R5 is further provided in the vehicle 100, so as to realize the detection of the connection of the CC2 terminal, and thus enable the vehicle 100 to detect the connection state between the power supply device 200 and the vehicle 100.

[0045] In an embodiment of the present invention, as Figure 4 shown, a series-connected switch S4 and resistor R8 may further be provided in the vehicle 100, and the series-connected switch S4 and resistor R8 are in parallel with the resistor R4.

[0046] Specifically, in this embodiment, as Figure 5 shown, when the power supply device 200 is connected to the vehicle 100, the voltage at the detection point 1 is a voltage such as 4V, and the voltage at the detection point 2 is another voltage such as 6V. When the operator performs a one-key setting for scheduled charging through the APP program of the power supply device 200 or the display screen on the power supply device 200, the power supply device 200 starts the scheduled charging process. After the power supply device controller receives the scheduled charging instruction, it controls the switch S1 to close, and the power supply device 200 starts to perform scheduled charging. At this time, the voltage at the detection point 1 increases, for example, from 4V to 10V. At the same time, the detection point 3 also detects that the voltage is 10V, then the vehicle 100 starts to respond to the scheduled charging request of the power supply device 200 and controls the switch S4 to close. At this time, the voltage at the detection point 3 decreases, for example, from 10V to 8V. Through this voltage state, it is informed to the power supply device 200 that the vehicle 100 has accepted the response request for scheduled charging, and the voltage at the detection point 1 is synchronously 8V. This voltage state represents that the power supply device 200 has received that the vehicle 100 has currently entered the scheduled charging ready process. At the same time, the switch S1 is disconnected, and the scheduled charging process starts. At this time, the voltage at the detection point 1 decreases to a first voltage such as 2V, representing waiting for scheduling. Similarly, the voltage at the detection point 3 is also the first voltage such as 2V, and the vehicle 100 enters the scheduled charging waiting state, that is, the vehicle 100 and the power supply device 200 wait together for scheduling. During this period, when the scheduling time is relatively long, the vehicle 100 will enter the sleep state and wait to be woken up.

[0047] When the power supply device 200 enters the reservation waiting state and reaches the reservation time, switch S1 is closed, and the voltage at detection point 1 increases to the second voltage, such as 8V. After the voltage at detection point 3 of vehicle 100 becomes 8V, it is awakened by the rising edge method from 2V to 8V. Vehicle 100 starts to receive the instructions of the reservation charging process and disconnects switch S4. At this time, the voltage at detection point 3 is 10V. At the same time, the power supply device 200 detects that the voltage at detection point 1 is also 10V. At this time, switch S1 is disconnected, and the voltage at detection point 1 returns to 4V when it was initially connected. At this time, the voltage at detection point 2 always remains at 6V, and the reservation charging is successful, and the charging process for charging vehicle 100 is entered.

[0048] It should be noted that Figure 4 The difference between the illustrated embodiment and Figure 3 the illustrated embodiment is that switch S4 and resistor R8 are added in vehicle 100 to inform the power supply device that vehicle 100 enters the reservation charging preparation ready process, so that the power supply device 200 controls switch S1 to disconnect and enters the reservation waiting state.

[0049] In the above embodiment, resistor R4, resistor R8, and switch S4 in vehicle 100 can be set in the socket on vehicle 100 that is connected to the plug of the power supply device 200, or can be set at other body positions outside the socket. Resistors R2, R3, and switch S in the power supply device 200 can be set in the plug, such as the charging gun, of the power supply device 200, such as a charging pile, that is connected to the socket of vehicle 100, and resistors R1, R6, and switch S1 can be set at other positions outside the plug of the power supply device 200.

[0050] Refer to Figures 1 - 4 , and a power supply device power module, switches K1, K2 are also provided in the power supply device 200, and switches K5, K6 are also provided in vehicle 100. After entering the charging process, switches K1, K2, K5, and K6 can be controlled to close to enable the power supply device power module to charge the power battery of vehicle 100.

[0051] In summary, the power supply device 200 of the embodiment of the present invention can implement reservation charging, thereby meeting more reservation charging needs of users for vehicle 100 and improving the charging experience of users for vehicle 100. At the same time, the connection state between the second connection confirmation terminal CC2 of the power supply device 200 and the second connection confirmation terminal CC2 of vehicle 100 can also be confirmed to ensure the reliability of the charging connection, and thus the charging safety can be ensured to a certain extent.

[0052] Based on the power supply device 200 of the above embodiment, the present invention also proposes a charging control method, and this method is applied to the power supply device 200 of the above embodiment.

[0053] In this embodiment, as Figure 6As shown, the charging control method includes the following steps:

[0054] S61. Obtain a reservation charging instruction, and control the first switch S1 to close according to the reservation charging instruction.

[0055] Specifically, the reservation charging instruction can be input through the touch screen of the power supply device, or can be input through an APP installed on a mobile terminal such as a smart phone bound to the power supply device. After the power supply device receives the reservation charging instruction, it can control the first switch S1 to close.

[0056] Among them, the reservation charging instruction can include at least one of: reservation time, reservation power, reservation charging power, reservation battery temperature, and reservation charging amount.

[0057] Specifically, the reservation time can be a time period or a time point. The reservation power can be to charge to a certain power, such as charging to full power, that is, the SOC reaches 100%; or it can be to charge a certain amount of power. The reservation charging power can include a reservation charging current and a reservation charging voltage. For example, when a vehicle's charging process includes constant voltage charging and constant current charging, the reservation charging current can be the current during constant current charging, and the reservation charging voltage can be the voltage during constant voltage charging. The reservation battery temperature can be the temperature at the start of vehicle charging or the temperature at the end of charging. For example, when the weather is cold and the battery needs to be heated before the vehicle starts charging, when the battery temperature reaches the reservation battery temperature, the vehicle starts charging; or when the weather is hot or the battery itself has a problem of easy heat generation, during the vehicle charging process, when the battery temperature reaches a relatively high reservation battery temperature, the vehicle is controlled to end charging. The reservation charging amount refers to the amount of money required to charge the vehicle. For example, the amount is calculated from the start of vehicle charging, and when the amount reaches the reservation charging amount, the vehicle is controlled to end charging.

[0058] Thus, through the setting of the above reservation charging instruction content, the diversity of vehicle pre-charging is increased, and different charging needs of users for the vehicle can be met.

[0059] S62. Obtain the detection signal of the first detection point, and control the first switch S1 to disconnect according to the detection signal of the first detection point, so that the power supply device enters the reservation charging state.

[0060] S63. When the reservation time is reached after the power supply device enters the reservation charging state, control the first switch S1 to close to wake up the vehicle.

[0061] S64. Obtain the detection signal of the first detection point, and control the first switch S1 to disconnect to charge the vehicle according to the detection signal of the first detection point.

[0062] In an embodiment of the present invention, the charging control method may further include: the vehicle 100 obtainsFigure 3 , Figure 4 Detect the detection signal of detection point 2, and determine the connection status between the second connection confirmation terminal CC2 of the vehicle 100 and the second connection confirmation terminal CC2 of the power supply device 200 according to the detection signal of detection point 2, so as to ensure the reliability of the charging connection, and further ensure the safety of charging to a certain extent.

[0063] It should be noted that for other specific embodiments of the charging control method of the embodiments of the present invention, reference may be made to the specific embodiments of the vehicle 100 in the above embodiments of the present invention.

[0064] In summary, the charging control method of the embodiments of the present invention can realize reservation charging at the power supply device end, so as to meet the user's more reservation charging requirements for the vehicle and improve the user's vehicle charging experience. At the same time, the connection status between the second connection confirmation terminal CC2 of the power supply device and the second connection confirmation terminal CC2 of the vehicle can also be confirmed to ensure the reliability of the charging connection, and further ensure the safety of charging to a certain extent.

[0065] Figure 7 is a schematic diagram of the control and guidance circuit of the embodiments of the present invention.

[0066] As Figure 7 shown, the control and guidance circuit 300 includes a first control and guidance module 310 and a second control and guidance module 320. The first control and guidance module 310 is arranged on the power supply device 200, and the second control and guidance module 320 is arranged on the vehicle 100.

[0067] Referring to Figure 7 , the first control and guidance module 310 includes a first resistor R1, a first switch S1 and a second resistor R6. The first end of the first resistor R1 is connected to a first preset power supply U1, and the second end of the first resistor R1 is connected to the first connection confirmation terminal CC1 of the power supply device 200. The first switch S1 and the second resistor R6 are connected in series, and the series-connected first switch S1 and second resistor R6 are connected in parallel with the first resistor R1. The second control and guidance module 320 includes a fifth resistor R4. The first end of the fifth resistor R4 is connected to the body ground terminal of the vehicle 100, and the second end of the fifth resistor R4 is connected to the first connection confirmation terminal CC1 of the vehicle 1,. Among them, a first detection point is arranged on the first connection confirmation terminal CC1 of the power supply device 200, denoted as detection point 1, and a second detection point is arranged on the first connection confirmation terminal of the vehicle 100, denoted as detection point 3. The power supply device 200 further includes a power supply device controller, and the power supply device controller is used to obtain a reservation charging instruction and control the first switch S1 to close

[0068] Specifically, the power supply device controller obtains a reservation charging instruction and controls the first switch S1 to close according to the reservation charging instruction; the vehicle controller obtains the detection signal at detection point 3 and controls the vehicle 100 to enter the reservation charging state according to the detection signal at detection point 3.

[0069] Thus, the control and guidance circuit 300 can implement reservation charging, thereby meeting the user's reservation charging requirement for the vehicle 100 and enhancing the user's charging experience of the vehicle 100.

[0070] In an embodiment of the present invention, as Figure 8 shown, the first control and guidance module 310 may further include: a third resistor R2 and a second switch S. The third resistor R2 and the second switch S are connected in series between the device ground terminal of the power supply device 200 and the first connection confirmation terminal CC1 of the power supply and device 200. In this embodiment, the reservation charging process of the power supply device 200 can refer to the description of the Figure 2 shown embodiment above.

[0071] In an embodiment of the present invention, as Figure 9 shown, the first control and guidance module 310 may further include a fourth resistor R3. The first end of the fourth resistor R3 is connected to the device ground terminal of the power supply device 200, and the second end of the fourth resistor R3 is connected to the second connection confirmation terminal CC2 of the power supply device 200. The second control and guidance module 320 may further include a sixth resistor R5. The first end of the sixth resistor R5 is connected to the second preset power supply U2, and the second end of the sixth resistor R5 is connected to the second connection confirmation terminal CC2 of the vehicle 100. Among them, a third detection point is provided at the second connection confirmation terminal CC1 of the vehicle 100, denoted as detection point 2. In this embodiment, the reservation charging process of the power supply device 200 can refer to the description of the Figure 3 shown embodiment above.

[0072] In an embodiment of the present invention, as Figure 10 shown, the second control and guidance module 320 may further include: a seventh resistor R8 and a third switch S4. The seventh resistor R8 and the third switch S4 are connected in series, and the series-connected seventh resistor R8 and third switch S4 are connected in parallel with the fifth resistor R4. In this embodiment, the reservation charging process of the power supply device 200 can refer to the description of the Figure 4 shown embodiment above.

[0073] In summary, the control and guidance circuit 300 of the embodiment of the present invention can implement reserved charging for the power supply device 200, thereby meeting the user's demand for reserved charging of the vehicle 100 and improving the user's charging experience of the vehicle 100. At the same time, the connection state between the second connection confirmation terminal CC2 of the power supply device 200 and the second connection confirmation terminal CC2 of the vehicle 100 can also be confirmed to ensure the reliability of the charging connection, and thus the charging safety can be guaranteed to a certain extent.

[0074] Based on the above control and guidance circuit 300, the present invention proposes another charging control method, which is applied to the control and guidance circuit 300 of the above embodiment.

[0075] As Figure 11 shown, the charging control method includes the following steps:

[0076] S111, the power supply device controller obtains a reserved charging instruction and controls the first switch S1 to close according to the reserved charging instruction.

[0077] S112, the vehicle controller obtains the detection signal of the second detection point and controls the vehicle to enter the reserved charging state according to the detection signal of the second detection point.

[0078] In an embodiment of the present invention, the vehicle controller obtains the detection signal of the second detection point and controls the vehicle to enter the reserved charging state according to the detection signal of the second detection point, including: when the first switch S1 is closed and the voltage at the first detection point changes from the first voltage to the second voltage, the voltage at the second detection point changes from the first voltage to the second voltage, and the vehicle controller controls the vehicle to enter the reserved charging state.

[0079] In an embodiment of the present invention, the vehicle controller obtains the detection signal of the second detection point and controls the vehicle to enter the reserved charging state according to the detection signal of the second detection point, and further includes: the vehicle controller controls the third switch S4 to close according to the detection signal of the second detection point.

[0080] In an embodiment of the present invention, the charging control method may further include: the power supply device controller obtains the detection signal of the first detection point and controls the first switch S1 to open according to the detection signal of the first detection point so that the power supply device enters the reserved charging state; when the reserved time is reached after the power supply device enters the reserved charging state, the power supply device controller controls the first switch S1 to close to wake up the vehicle; the vehicle controller obtains the detection signal of the second detection point and controls the third switch S4 to open according to the detection signal of the second detection point; the device controller obtains the detection signal of the first detection point and controls the first switch S1 to open to charge the vehicle.

[0081] It should be noted that for other specific implementation manners of the embodiments of the present invention, reference may be made to the specific implementation manners of the control and guidance circuit in the above embodiments of the present invention.

[0082] In summary, the charging control method of the embodiments of the present invention can achieve reserved charging at the power supply device end, thereby meeting the user's demand for reserved charging of the vehicle and enhancing the user's vehicle charging experience. At the same time, the connection state between the second connection confirmation terminal CC2 of the power supply device and the second connection confirmation terminal CC2 of the vehicle can also be confirmed to ensure the reliability of the charging connection, and further ensure the safety of charging to a certain extent.

[0083] It should be noted that reserved charging can also be performed at the vehicle end. The process will be described below in combination with the embodiments shown in Figure 4 , Figure 10 as follows:

[0084] The plug of the power supply device (such as a charging pile) is connected to the socket of the vehicle. The power supply device controller determines that the voltage at detection point 1 is a normal charging voltage, such as 4V. The vehicle controller determines that the voltage at detection point 2 is a reference connection voltage, such as 6V, and the voltage at detection point 3 is the same as the voltage at detection point 1. The vehicle controller obtains a reserved charging instruction, the vehicle starts reserved charging, and controls switch S4 to close according to the reserved charging instruction. The voltage at detection point 3 decreases, such as decreasing to 2V. The power supply device controller determines that the voltage at detection point 1 is a first voltage, such as 2V, indicating that the vehicle is ready for reserved charging. The vehicle and the power supply device enter the reserved charging waiting state. When the reserved time is reached after entering the reserved charging waiting state, the power supply device controller controls switch S1 to close. The voltage at detection point 1 changes from 2V to a second voltage, such as 8V. Correspondingly, the voltage at detection point 3 rises from 2V to 8V, and this rising edge wakes up vehicle 100. The vehicle controller controls switch S4 to open, and the voltage at detection point 3 becomes 10V. At the same time, the power supply device controller detects that the voltage at detection 1 is 10V. At this time, it controls switch S1 to open, the voltage at detection point 1 becomes a normal charging voltage, such as 4V, and the voltage at detection point 2 is 6V at the same time. The reserved charging is successful, and the process of charging the vehicle is entered.

[0085] It should be noted that similar to the reserved charging of the above power supply device 200, vehicle 100 can also obtain a reserved charging instruction when the power supply device 200 is not connected to vehicle 100, and then control switch S4 to close. Then, after the power supply device 200 is connected to vehicle 100, the subsequent reserved charging process is executed.

[0086] In some embodiments of the present invention, the detection of PE disconnection can also be performed.

[0087] As a feasible implementation manner, such as Figure 12As shown, the vehicle 100 may further include a disconnection detection switch S5. The disconnection detection switch S5 is connected in series with a resistor R5, and the series-connected disconnection detection switch S5 and resistor R5 are connected between the second connection confirmation terminal CC2 of the vehicle 100 and the power supply U2. When the vehicle 100 is charged through the power supply device 200, the vehicle controller controls the disconnection detection switch S5 to be in an open state, so that the power supply device 200 can detect the disconnection of the PE line connecting the vehicle body ground terminal PE and the device ground terminal PE. It can be understood that the disconnection detection switch S5 is correspondingly arranged in the above-mentioned second guiding control module 320. It can be that the switch S5 is connected between the resistor R5 and the power supply U2, or the resistor R5 is connected between the switch S5 and the power supply U2.

[0088] Specifically, the disconnection detection switch S5 can be a normally closed switch. Refer to Figure 12 , a normally closed switch S5 is added to the CC2 circuit of the vehicle 100 (that is, the circuit where the second connection confirmation terminal CC2 of the vehicle 100 is located), separating the CC1 circuit (that is, the circuit where the first connection confirmation terminal CC2 of the vehicle 100 is located) from the CC2 circuit, and the resistor R4 is arranged in the vehicle body instead of the vehicle socket to ensure that the CC1 circuit can detect the entire PE circuit (including the circuit where the vehicle body ground terminal PE of the vehicle 100 and the device ground terminal PE of the power supply device 200 are connected).

[0089] Specifically, after the vehicle 100 and the power supply device 200 enter the charging stage, the vehicle 100 disconnects the switch S5, and the PE circuit only serves as a part of the CC1 circuit. When the PE circuit is disconnected at different positions, the power supply device 200 can identify the PE disconnection. During the identification, the power supply device 200 obtains the voltage at the detection point 1. When the voltage at the detection point 1 jumps from the normal charging voltage, such as 4V, to a relatively large voltage, such as 12V, it indicates that the first resistor R1 cannot be connected to the device ground terminal of the power supply device 200 through the third resistor R2 and the resistor R4 in the vehicle 100, and it is determined that there is a disconnection between the first node A and the device ground terminal PE. At this time, among them, the first node A is the connection point of the series-connected resistor R2 and the switch S and the device ground terminal PE. When the voltage at the detection point 1 jumps from the normal charging voltage, such as 4V, to another relatively large voltage, such as 6V, it indicates that the first resistor R1 and the second resistor R2 are connected in series and form a loop, and the first resistor R1 and the resistor R4 do not form a loop, and it is determined that there is a disconnection between the first node A and the second node B, where the second node is the connection point of the resistor R4 and the vehicle body ground terminal PE.

[0090] It should be noted that the above voltage values can be set by taking the resistors R1, R2, R3, R4, and R5 as 1000Ω and the voltage provided by the first preset power supply U1 as 12V as an example.

[0091] In specific implementation cases, the disconnection between the first node A and the second node B includes three situations: the first is the disconnection between the first node A at the power supply device 200 end and the connection point on the plug of the power supply device 200 for connecting the socket of the vehicle 100, resulting in the disconnection between the first node A and the second node B; the second is the disconnection of the pins at the connection between the plug and the socket, resulting in the disconnection between the first node A and the second node B; the third is the disconnection between the second node B at the vehicle 100 end and the connection point on the socket for connecting the plug, resulting in the disconnection between the first node A and the second node B.

[0092] Optionally, the detection results of detection point 1 and detection point 2 can also be combined to determine the connection state of the plug and the socket. The specific detection situation of this connection state is prior art and will not be elaborated here.

[0093] As a feasible implementation manner, during the charging process of the vehicle 100 through the power supply device 200, the switch S5 can be controlled to be always in the off state. For example, the vehicle controller can control the disconnection detection switch S5 to be off when detecting the charging current, so as to prevent the resistor R5 and the power supply U2 from affecting the detection during the disconnection detection of the power supply device 200; when detecting that the charging current drops below a preset current threshold such as 5A, it is determined that the charging is over, and the disconnection detection switch S5 is controlled to close and enter the normally closed state.

[0094] Thus, Figure 12 The shown embodiment can not only achieve the above-mentioned scheduled charging, but also detect the PE disconnection state according to the detection signal of detection point 1 during the charging process, ensuring the reliability of charging.

[0095] In some embodiments of the present invention, emergency stop control can also be performed on the charging.

[0096] As a first feasible implementation manner, as Figure 13 shown, the power supply device 200 can also be provided with a switch S2 and a resistor R7. The switch S2 is in parallel with the resistor R7, and the parallel switch S2 and resistor R7 are in series with the resistor R1. Among them, the switch S2 and the resistor R7 can be included in the above-mentioned first control and guidance module 310.

[0097] Specifically, when a loop abnormality occurs in the power supply device 200, such as emergencies like thermal runaway, smoking, or fire, the power supply device 200 can obtain a stop charging instruction (such as input through the touch screen of the power supply device 200 or the APP bound to the power supply device 200), and disconnect the switch S2 according to this instruction. At this time, the voltage at detection point 1 jumps from the normal charging voltage such as 4V to a smaller voltage, such as 2V. After the power supply device 200 detects the 2V voltage, it immediately stops charging and cuts off the loop current.

[0098] As a second feasible implementation, as Figure 14 shown, a switch S3 may also be provided in the vehicle 100, and a switch S2 and a resistor R7 may also be provided in the power supply device 200. The switch S3 is connected in parallel with the resistor R4, the switch S2 is connected in parallel with the resistor R7, and the switch S2 and the resistor R7 after being connected in parallel are connected in series with the resistor R1. Among them, the switch S3 may be included in the second control and guidance module 320 described above, and the switch S2 and the resistor R7 may be included in the first control and guidance module 310 described above.

[0099] Specifically, when a loop abnormality occurs in the power supply device 200, such as an emergency such as thermal runaway, smoking, or fire, the power supply device 200 can obtain a stop charging instruction (such as input through the touch screen of the power supply device 200 or the APP bound to the power supply device 200), and disconnect the switch S2 according to this instruction. At this time, the voltage at the detection point 1 jumps from the normal charging voltage, such as 4V, to a smaller voltage, such as 2V. After the power supply device 200 detects the 2V voltage, it immediately stops charging and cuts off the loop current of the power supply device 200. At this time, the voltage at the detection point 3 of the vehicle 100 is 2V. After the vehicle controller detects the voltage of 2V, it considers that the power supply device 200 has had an emergency stop failure. At this time, the vehicle 100 will immediately send an instruction to the switch S3 to close the switch S3, so that the voltage at the detection point 3 changes from 2V to 0V. Among them, 0V can be defined as the state of emergency stop during charging of the vehicle 100.

[0100] As a third feasible implementation, as Figure 15 shown, a switch S3 may also be provided in the vehicle 100, and the switch S3 is connected in parallel with the resistor R4. Among them, the switch S3 may be included in the second control and guidance module 320 described above.

[0101] Specifically, when an emergency control or interruption of the conductive charging energy occurs on the vehicle 100 side, the vehicle controller can control the switch S3 to switch from the off state to the on state by sending an instruction to the switch S3, and the voltage at the detection point 3 jumps from the normal charging voltage, such as 4V, to 0V. At the same time, the voltage at the detection point 1 will also jump to 0V. After the power supply device 200 detects the change in the voltage at the detection point 1, it will immediately respond and perform relevant actions to stop charging.

[0102] As a fourth feasible implementation, as Figure 16 shown, a switch S3 and a resistor Ry of Spring Festival couplets may also be provided in the vehicle 100. The switch S3 and the resistor Ry are connected in series and then connected in parallel with the resistor R4. Among them, the switch S3 and the resistor Ry may be included in the second control and guidance module 320 described above.

[0103] Specifically, when there is an emergency control or interruption of the conductive charging energy on the vehicle 100 side, the vehicle controller can control switch S3 to switch from the open state to the closed state by sending an instruction to S3. As a result, resistor Ry is paralleled to R4, causing the voltage at detection point 1 to jump from the normal charging voltage to a smaller voltage. At the same time, the voltage at detection point 1 also jumps to a smaller voltage. After the power supply device 200 detects the change in the voltage at detection point 1, it will immediately respond and perform relevant actions to stop charging.

[0104] Thus, Figures 13 - 16 The illustrated embodiment can not only achieve the above-mentioned scheduled charging, but also cut off the voltage and current in an extremely short time under abnormal conditions during the charging process, thereby realizing an emergency stop of charging and ensuring the safety of charging.

[0105] In an embodiment of the present invention, as Figure 17 shown, this embodiment integrates the above-mentioned scheduled charging, detection of the PE disconnection state, and emergency stop control functions. Specifically, for the process of scheduled charging, reference can be made to the specific implementation manners of the vehicle 100 scheduled charging and the power supply device 200 scheduled charging described above. After completing the scheduled charging and entering the charging process for the vehicle 100, detection of the PE disconnection state and emergency stop control can be performed, which may include controlling switches K1, K2, K5, and K6 to be disconnected.

[0106] Specifically, as an example, during the charging process of the vehicle 100, switch S5 can be first controlled to be disconnected for detecting the PE disconnection state. When it is determined that there is no PE disconnection, switch S5 can be controlled to be closed, and then it can be detected whether there are any abnormalities requiring an emergency stop at the vehicle 100 end and / or the power supply device 200 end. If there are, emergency stop control is performed; if not, the normal charging process is executed.

[0107] As another example, during the charging process of the vehicle 100, switch S5 is controlled to be disconnected at a preset time point for detecting the PE disconnection state. At the same time, during the entire charging process, it is continuously detected whether there are any abnormalities requiring an emergency stop at the vehicle 100 end and / or the power supply device 200 end, and when an abnormality is detected, emergency stop control is performed.

[0108] As yet another example, during the charging process of the vehicle 100, switch S5 can be controlled to be always in the open state for continuously detecting the PE disconnection. For example, the vehicle controller can control the disconnection detection switch S5 to be disconnected when the charging current is detected, and determine that the charging is over when the charging current is detected to be reduced to less than a preset current threshold such as 5A, control the disconnection detection switch S5 to be closed and enter the normally closed state. At the same time, it can also continuously detect whether there are any abnormalities requiring an emergency stop at the vehicle 100 end and / or the power supply device 200 end, and when an abnormality is detected, emergency stop control is performed.

[0109] Thus, the reservation charging requirements of users for the vehicle can be met, the detection of the PE disconnection state and the emergency stop control during the vehicle charging process can be ensured, and the charging safety and reliability are improved.

[0110] It should be noted that the logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a defined sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or in combination with these instruction execution systems, apparatuses, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion having one or more wirings (electronic device), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or otherwise processing as appropriate, and then storing it in a computer memory.

[0111] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0112] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0113] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0114] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0115] In the present invention, unless otherwise clearly specified and limited, terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0116] In the present invention, unless otherwise expressly specified or limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediate medium. Further, a first feature being "above", "over" and "on top of" a second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a greater level height than the second feature. A first feature being "under", "below" and "beneath" a second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a smaller level height than the second feature.

[0117] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A power supply device, characterized in that, The power supply device includes: A first connection confirmation terminal and a first resistor, where the first end of the first resistor is connected to a first preset power supply, and the second end of the first resistor is connected to the first connection confirmation terminal; A first switch and a second resistor, where the first switch and the second resistor are connected in series, and the series-connected first switch and second resistor are connected in parallel with the first resistor; Wherein, a first detection point is provided on the first connection confirmation terminal; The power supply device further includes a power supply device controller, and the power supply device controller is configured to: obtain a reservation charging instruction, and control the first switch to close according to the reservation charging instruction; obtain a detection signal of the first detection point, and control the first switch to open according to the detection signal of the first detection point, so that the power supply device enters a reservation charging state; when the reservation time is reached after the power supply device enters the reservation charging state, control the first switch to close to wake up the vehicle; obtain the detection signal of the first detection point, and control the first switch to open according to the detection signal of the first detection point to charge the vehicle.

2. The power supply device according to claim 1, characterized in that, The power supply device further includes: A device ground terminal, a third resistor, and a second switch, where the third resistor and the second switch are connected in series between the device ground terminal and the first connection confirmation terminal.

3. The power supply device according to claim 2, wherein The power supply device further includes: A second connection confirmation terminal and a fourth resistor, where the first end of the fourth resistor is connected to the device ground terminal, and the second end of the fourth resistor is connected to the second connection confirmation terminal.

4. A control guiding circuit, characterized in that, Including a first control and guidance module and a second control and guidance module, the first control and guidance module is provided on the power supply device, and the second control and guidance module is provided on the vehicle; The first control and guidance module includes a first resistor, a first switch, and a second resistor, where the first end of the first resistor is connected to a first preset power supply, the second end of the first resistor is connected to the first connection confirmation terminal of the power supply device, the first switch and the second resistor are connected in series, and the series-connected first switch and second resistor are connected in parallel with the first resistor; The second control and guidance module includes a fifth resistor, where the first end of the fifth resistor is connected to the body ground terminal of the vehicle, and the second end of the fifth resistor is connected to the first connection confirmation terminal of the vehicle; Wherein, a first detection point is provided on the first connection confirmation terminal of the power supply device, and a second detection point is provided on the first connection confirmation terminal of the vehicle; The power supply device further includes a power supply device controller, and the power supply device controller is configured to: obtain a reservation charging instruction, and control the first switch to close according to the reservation charging instruction; obtain a detection signal of the first detection point, and control the first switch to open according to the detection signal of the first detection point, so that the power supply device enters a reservation charging state; when the reservation time is reached after the power supply device enters the reservation charging state, control the first switch to close to wake up the vehicle; obtain the detection signal of the first detection point, and control the first switch to open according to the detection signal of the first detection point to charge the vehicle.

5. The control and guidance circuit according to claim 4, wherein The first control and guidance module further includes: A third resistor and a second switch, the third resistor and the second switch being connected in series between the device ground terminal of the power supply device and the first connection confirmation terminal.

6. The control and guidance circuit according to claim 4, wherein the first control and guidance module further includes a fourth resistor, a first end of the fourth resistor being connected to the device ground terminal of the power supply device, and a second end of the fourth resistor being connected to the second connection confirmation terminal of the power supply device; the second control and guidance module further includes a sixth resistor, a first end of the sixth resistor being connected to a second preset power supply, and a second end of the sixth resistor being connected to the second connection confirmation terminal of the vehicle; wherein a third detection point is provided at the second connection confirmation terminal of the vehicle.

7. The control and guidance circuit according to claim 4, characterized in that The second control and guidance module further includes: a seventh resistor and a third switch, the seventh resistor and the third switch being connected in series, and the series-connected seventh resistor and third switch being connected in parallel with the fifth resistor.

8. A charging control method, characterized in that, The method is applied to a power supply device according to any one of claims 1-3, and the method includes the following steps: Obtain a reservation charging instruction, and control the first switch to close according to the reservation charging instruction; Obtain a detection signal of the first detection point, and control the first switch to open according to the detection signal of the first detection point, so that the power supply device enters a reservation charging state; When the reservation time is reached after the power supply device enters the reservation charging state, control the first switch to close to wake up the vehicle; Obtain a detection signal of the first detection point, and control the first switch to open according to the detection signal of the first detection point to charge the vehicle.

9. The charging control method according to claim 8, wherein, The reservation charging instruction includes at least one of a reservation time, a reservation power, a reservation charging power, a reservation battery temperature, and a reservation charging amount.

10. A charging control method, characterized in that, The method is applied to a control and guidance circuit according to any one of claims 4-7, and the method includes the following steps: The power supply device controller obtains a reservation charging instruction, and controls the first switch to close according to the reservation charging instruction; The vehicle controller obtains a detection signal of the second detection point, and controls the vehicle to enter a reservation charging state according to the detection signal of the second detection point.

11. The charging control method according to claim 10, characterized in that, The vehicle controller obtains a detection signal of the second detection point, and controls the vehicle to enter a reservation charging state according to the detection signal of the second detection point, including: When the first switch is closed and the voltage at the first detection point changes from a first voltage to a second voltage, the voltage at the second detection point changes from the first voltage to the second voltage, and the vehicle controller controls the vehicle to enter a reservation charging state.

12. The charging control method according to claim 10 or 11, characterized in that, The second control and guidance module further includes a seventh resistor and a third switch, the seventh resistor and the third switch being connected in series, and the series-connected seventh resistor and third switch being connected in parallel with the fifth resistor; the vehicle controller obtains a detection signal of the second detection point, and controls the vehicle to enter a reservation charging state according to the detection signal of the second detection point, further including: The vehicle controller controls the third switch to close according to the detection signal of the second detection point.

13. The charging control method according to claim 12, characterized in that, The method further includes: The power supply device controller obtains the detection signal of the first detection point, and controls the first switch to disconnect according to the detection signal of the first detection point, so that the power supply device enters the reserved charging state; When the reserved time is reached after the power supply device enters the reserved charging state, the power supply device controller controls the first switch to close to wake up the vehicle; The vehicle controller obtains the detection signal of the second detection point, and controls the third switch to disconnect according to the detection signal of the second detection point; The device controller obtains the detection signal of the first detection point, and controls the first switch to disconnect according to the detection signal of the first detection point to charge the vehicle.

Images