Communication method of ac charging pile and communication method of vehicle

Abstract

The present disclosure relates to the technical field of charging, in particular to a communication method of an alternating current (AC) charging pile and a communication method of a vehicle, which comprises: during the process of charging and discharging of the AC charging pile and the vehicle, if at least one of the AC charging pile and the vehicle is offline, the AC charging pile stops sending a specified signal to the vehicle every interval of a preset time length, and receives real-time information sent by the vehicle. The present disclosure can ensure real-time interaction when the vehicle and / or the AC charging pile is in an offline state by sending a specified signal to the vehicle every interval of a preset time length and receiving real-time information sent by the vehicle during the process of charging and discharging of the AC charging pile and the vehicle.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of charging, in particular, to a communication method of an alternating current charging pile and a communication method of a vehicle. BACKGROUND

[0002] With the continuous development of new energy industry, new energy vehicles as sustainable development of transportation tools gradually get people's favor, among them, the charging pile as the basic supporting facilities of new energy vehicles, plays a vital role in the development process of new energy vehicles. However, when the alternating current charging pile and / or the vehicle is in an offline state, it cannot meet the real-time interaction demand between the alternating current charging pile and the vehicle. Therefore, how to better control the communication between the alternating current charging pile and the vehicle is a technical problem to be solved. SUMMARY

[0003] In order to overcome the problems in the related art, the present disclosure provides a communication method of an alternating current charging pile and a communication method of a vehicle.

[0004] The first aspect of the present disclosure provides a communication method of an alternating current charging pile, comprising:

[0005] In the process of charging and discharging of the alternating current charging pile and the vehicle, if at least one of the alternating current charging pile and the vehicle is offline, the alternating current charging pile stops sending a specified signal to the vehicle every interval of a preset time length, and receives real-time information sent by the vehicle.

[0006] Optionally, the step of stopping sending a specified signal to the vehicle every interval of a preset time length, and receiving real-time information sent by the vehicle, comprises:

[0007] stopping sending a first PWM signal to the vehicle every interval of a preset time length, and instructing the vehicle to control the on-off of a target switch to receive real-time information of the vehicle.

[0008] Optionally, after receiving the real-time information sent by the vehicle, the method comprises:

[0009] when the vehicle is in an offline state and the alternating current charging pile is in an online state, sending the real-time information of the vehicle to a server;

[0010] receiving charging and discharging instruction information transmitted by the server, and controlling the charging and discharging of the vehicle based on the charging and discharging instruction information.

[0011] Optionally, after receiving the real-time information sent by the vehicle, the method comprises:

[0012] receiving, when the AC charging pile is in an offline state and the vehicle is in an online state, charging and discharging indication information sent by the vehicle, the charging and discharging indication information being sent by a server to the vehicle after the server receives real-time information sent by the vehicle;

[0013] controlling charging and discharging of the vehicle based on the charging and discharging indication information.

[0014] Optionally, after the real-time information sent by the vehicle is received, the method further comprises:

[0015] receiving, when the AC charging pile and the vehicle are both in an offline state, real-time information sent by the vehicle;

[0016] obtaining charging and discharging indication information based on the real-time information, and controlling charging and discharging of the vehicle based on the charging and discharging indication information.

[0017] Optionally, the method further comprises:

[0018] when the AC charging pile is in an offline state, reducing charging power of the AC charging pile, and charging the vehicle according to a first specified power.

[0019] Optionally, the method further comprises:

[0020] when the AC charging pile is in an offline state, reducing discharging power of the vehicle, and discharging the AC charging pile according to a second specified power.

[0021] Optionally, the controlling charging and discharging of the vehicle based on the charging and discharging indication information comprises:

[0022] when the charging and discharging indication information is stop indication information, responding to real-time information sent by the vehicle next time, and ending charging and discharging.

[0023] Optionally, the responding to real-time information sent by the vehicle next time when the charging and discharging indication information is stop indication information comprises:

[0024] when the vehicle is in an offline state and the AC charging pile is in an online state, receiving the stop indication information sent by the server, and stopping sending a first PWM signal to the vehicle;

[0025] receiving real-time information sent by the vehicle next time, and responding to the real-time information.

[0026] Optionally, the responding to real-time information sent by the vehicle next time when the charging and discharging indication information is stop indication information comprises:

[0027] receive the real-time information and the stop indication information sent by the vehicle next time, and reply to the real-time information.

[0028] Optionally, when the charge-discharge indication information is the stop indication information, replying to the real-time information sent by the vehicle next time comprises:

[0029] when the AC charging pile and the vehicle are both offline, if it is determined to end the charge-discharge, stop sending the first PWM signal to the vehicle;

[0030] receive the real-time information sent by the vehicle next time, and reply to the real-time information.

[0031] Optionally, after receiving the real-time information sent by the vehicle, the method comprises:

[0032] sending reply information to the vehicle based on the real-time information, the reply information comprising charge-discharge charging information.

[0033] Optionally, after sending the reply information to the vehicle based on the real-time information, the method comprises:

[0034] sending a first PWM signal to the vehicle, the first PWM signal being used to instruct the vehicle to close a target switch.

[0035] when detecting that the voltage value on the control guide signal line changes from a first voltage value to a second voltage value, starting the charge-discharge, the first voltage value being greater than the second voltage value.

[0036] Optionally, the method further comprises:

[0037] in response to a connection operation of the vehicle, sending a second PWM signal to the vehicle;

[0038] if, within a preset time period after sending the second PWM signal, it is detected that the voltage value on the control guide signal line changes from a first voltage value to a second voltage value, determining that the vehicle and the AC charging pile can communicate, the first voltage value being greater than the second voltage value.

[0039] The second aspect of the present disclosure provides a communication method of a vehicle, the method comprising:

[0040] in the process of charge-discharge between an AC charging pile and the vehicle, if at least one of the AC charging pile and the vehicle is offline, the vehicle stops receiving a specified signal from the AC charging pile and sends real-time information to the AC charging pile every interval of a preset time period.

[0041] The third aspect of the present disclosure provides an alternating current charging pile, the alternating current charging pile comprising:

[0042] a memory having a computer program stored thereon;

[0043] a processor configured to execute the computer program in the memory to implement the steps of the method of the first aspect.

[0044] The fourth aspect of the present disclosure provides a vehicle, the vehicle comprising:

[0045] a memory having a computer program stored thereon;

[0046] a processor configured to execute the computer program in the memory to implement the steps of the method of the second aspect.

[0047] The fifth aspect of the present disclosure provides a computer readable storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the steps of the method of the first aspect and the second aspect.

[0048] The sixth aspect of the present disclosure provides a computer program product comprising a computer program, the computer program being executed by a processor to implement the method of the first aspect and the second aspect.

[0049] In the process of charging and discharging between the alternating current charging pile and the vehicle, if at least one of the alternating current charging pile and the vehicle is offline, the alternating current charging pile can send a specified signal to the vehicle every interval of a preset time length, so that the vehicle can know when to trigger the sending of real-time information through the stop operation, thereby effectively ensuring that the vehicle and / or the alternating current charging pile can still interact with each other when they are offline, to meet the communication needs of both.

[0050] Other features and advantages of the present disclosure will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0051] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following specific embodiments to explain the present disclosure, but do not constitute a limitation of the present disclosure. In the drawings:

[0052] Figure 1 is an application scenario of a communication method of an alternating current charging pile according to the present disclosure.

[0053] Figure 2 is a schematic diagram of an alternating current charging control guide circuit according to an exemplary embodiment.

[0054] Figure 3 is a flowchart of a communication method of an alternating current charging pile according to an exemplary embodiment.

[0055] Figure 4 is a flow chart of interaction between an AC charging pile and a vehicle in a communication method of an AC charging pile according to an example embodiment.

[0056] Figure 5 is a flow chart of interaction between a vehicle and an AC charging pile when both the vehicle and the AC charging pile are in an online state in a communication method of an AC charging pile according to an example embodiment.

[0057] Figure 6 is a flow chart of another communication method of an AC charging pile according to an example embodiment.

[0058] Figure 7 is a schematic diagram of encoding definition of action of a target switch in another communication method of an AC charging pile according to an example embodiment.

[0059] Figure 8 is an interaction example diagram when a vehicle is in an offline state and an AC charging pile is in an online state in another communication method of an AC charging pile according to an example embodiment.

[0060] Figure 9 is an interaction example diagram when a vehicle is in an online state and an AC charging pile is in an offline state in another communication method of an AC charging pile according to an example embodiment.

[0061] Figure 10 is an interaction example diagram when both a vehicle and an AC charging pile are in an offline state in another communication method of an AC charging pile according to an example embodiment.

[0062] Figure 11 is a flow chart of a communication method of a vehicle according to an example embodiment.

[0063] Figure 12 is a block diagram of a communication device of an AC charging pile according to an example embodiment.

[0064] Figure 13 is a block diagram of a communication device of a vehicle according to an example embodiment.

[0065] Figure 14 is a block diagram of a vehicle according to an example embodiment. DETAILED DESCRIPTION

[0066] The detailed description of the disclosure is described below in conjunction with the accompanying drawings. It should be understood that the detailed description described herein is only used to illustrate and explain the disclosure, and is not used to limit the disclosure.

[0067] Embodiments of the present disclosure will be described below in greater detail with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be interpreted as being limited to the embodiments set forth herein, but rather, these embodiments are provided so as to more completely and thoroughly understand the present disclosure. It is understood that the drawings and embodiments of the present disclosure are for exemplary purposes only and are not intended to limit the scope of protection of the present disclosure.

[0068] It should be understood that each of the steps recited in the method embodiments of the present disclosure can be performed in different orders and / or in parallel. In addition, the method embodiments can include additional steps and / or omit the steps shown. The scope of the present disclosure is not limited in this respect.

[0069] The term "comprising" and variations thereof as used herein are open-ended, that is "including but not limited to". The term "based on" is "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Related terms are defined in the following description.

[0070] It should be noted that the concepts of "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0071] Figure 1 is an application scenario of a communication method of an alternating current charging pile according to the present disclosure. As shown in Figure 1 , a vehicle 1 is connected with an alternating current charging pile 2 to perform charging and discharging. The vehicle 1 can be an electric vehicle or a hybrid vehicle, etc., or can be other equipment that can use the alternating current charging pile 2 to perform charging.

[0072] In some embodiments, when the vehicle 1 discharges the alternating current charging pile 2, if it is determined that the alternating current charging pile 2 is configured with an energy storage element, the electrical energy output by the vehicle 1 can be stored in the energy storage element of the alternating current charging pile 2 to achieve the discharging of the vehicle 1 to the alternating current charging pile 2. Here, the energy storage element of the alternating current charging pile 2 can receive the electrical energy of the vehicle 1 through an internal electronic control system.

[0073] Alternatively, the electrical energy discharged by the vehicle 1 can also be transmitted to the power grid through the alternating current charging pile 2. For example, when the power grid is in a power consumption peak and the vehicle 1 is in an idle state, the vehicle 1 can supplement the electrical energy of the power grid in the form of discharging to achieve the discharging of the vehicle 1 to the power grid, and subsequently when the power grid is in an idle state, the power grid can charge the vehicle 1 through the alternating current charging pile 2 to compensate for the electrical energy released by the vehicle.

[0074] The server 3 can be connected with the vehicle 1 and the charging pile 2 respectively, the server 3 can be a cloud server, or can be a physical server, which is not limited here. In addition, the server 3 can also be called a platform, which can be a charging pile operation platform, or also can be a vehicle operation platform.

[0075] Figure 2 is a schematic diagram of an alternating current charging control pilot circuit according to an exemplary embodiment, Figure 2 The circuit shown is the alternating current charging control pilot circuit specified in Electric Vehicle Conduction Charging System Part 1: General Requirements (GB / T 18487.1-2015).

[0076] As shown in Figure 2 The power supply device includes a power supply control device, a switch S1, a resistor R1, a contactor K1 and a contactor K2, and the power supply device can be an alternating current charging pile in the disclosure. The electric vehicle, that is, the vehicle, includes an on-board charger, a vehicle control device, a switch S2, a resistor R2 and a resistor R3. The vehicle interface includes a switch S3, a resistor R4, a resistor Rc, a charging connection confirmation (CC) interface and a control pilot (CP) interface.

[0077] The voltage value on the control pilot signal line detected by the charging pile, that is, the voltage value at the detection point 1, the control pilot signal line can also be called a CP signal line, and the signal on the control pilot signal line can be a CP signal. When the charging gun of the alternating current charging pile is not connected with the vehicle, the switch S1 is connected to the +12V terminal, and the voltage value on the CP signal line detected by the charging pile is 12V. After the vehicle is connected with the charging gun of the alternating current charging pile, due to the voltage division effect of the resistor, the voltage value on the CP signal line detected by the charging pile becomes about 9V, at this time the switch S1 will be connected to the PWM (Pulse Width Modulation) terminal, and the charging pile can send a PWM signal to the vehicle through the CP signal line.

[0078] In the related art, the alternating current charging pile and the vehicle usually interact before the charging and discharging starts, and the interaction between the vehicle and the alternating current charging pile is unidirectional, that is, there is only one-way communication from the alternating current charging pile to the vehicle. That is, the above existing communication mode cannot meet the real-time interaction demand of the alternating current charging pile and the vehicle.

[0079] To solve the above problems, in the process of charging and discharging of the alternating current charging pile and the vehicle, if the alternating current charging pile and / or the vehicle is offline, the alternating current charging pile can stop sending a specified signal to the vehicle every interval of a preset time length, and receive real-time information sent by the vehicle, so that the demand for real-time interaction between the vehicle and the pile can be met even if the vehicle or the alternating current charging pile is offline.

[0080] Figure 3 is a flow chart of a communication method of an alternating current charging pile according to an exemplary embodiment. Please refer to Figure 3 The communication method of the alternating current charging pile can include the following steps.

[0081] In step S110, in the process of charging and discharging of the alternating current charging pile and the vehicle, if at least one of the alternating current charging pile and the vehicle is offline, the alternating current charging pile stops sending a specified signal to the vehicle every interval of a preset time length, and receives real-time information sent by the vehicle.

[0082] In the embodiment of the present disclosure, the charging and discharging of the alternating current charging pile and the vehicle can be that the alternating current charging pile authenticates the vehicle and enters the state of charging and discharging process. That is, in the process of detecting the charging and discharging of the alternating current charging pile and the vehicle, if at least one of the alternating current charging pile and / or the vehicle is offline, the alternating current charging pile can stop sending a specified signal to the vehicle every interval of a preset time length, and receive real-time information sent by the vehicle.

[0083] As an example, in the process of detecting the charging of the alternating current charging pile to the vehicle, if at least one of the alternating current charging pile and / or the vehicle is offline, the alternating current charging pile can stop sending a specified signal to the vehicle every interval of a preset time length, and receive real-time information sent by the vehicle.

[0084] As another example, in the process of detecting the discharging of the vehicle to the alternating current charging pile, if at least one of the alternating current charging pile and / or the vehicle is offline, the alternating current charging pile can stop sending a specified signal to the vehicle every interval of a preset time length, and receive real-time information sent by the vehicle.

[0085] That is, whether the alternating current charging pile is charging the vehicle or the vehicle is discharging the alternating current charging pile, when the alternating current charging pile and / or the vehicle is offline, the embodiment of the present disclosure can stop sending a specified signal to the vehicle every interval of a preset time length, that is, the embodiment of the present disclosure can be applied to the charging scene of the alternating current charging pile, and can also be applied to the discharging scene of the vehicle, and the specific application scene is not limited by the embodiment of the present disclosure.

[0086] In the process of charging and discharging between the alternating current charging pile and the vehicle, the alternating current charging pile can be in an offline state or in an online state. Similarly, in the process of charging and discharging between the alternating current charging pile and the vehicle, the vehicle can be in an offline state or in an online state, which can be collectively referred to as a communication state. When at least one of the vehicle and the alternating current charging pile is offline, the alternating current charging pile can stop sending a specified signal to the vehicle for a preset time interval to achieve the interaction demand between the vehicle and the pile.

[0087] In some embodiments, after the vehicle is connected with the alternating current charging pile and enters the charging and discharging process, the communication state of the vehicle and / or the alternating current charging pile can change. Specifically, the charging gun of the alternating current charging pile is inserted into the charging port of the vehicle for communication, and enters the charging and discharging process after the communication is completed. Before that, the alternating current charging pile is in an online state, and the vehicle can be in an online state or in an offline state. As the charging and discharging process proceeds, the communication state of the vehicle and / or the alternating current charging pile can change.

[0088] For example, the communication state of the vehicle switches from the online state to the offline state, and the communication state of the alternating current charging pile remains unchanged, i.e., in the online state. For another example, the communication state of the vehicle switches from the offline state to the online state, and the communication state of the alternating current charging pile switches from the online state to the offline state.

[0089] As an optional way, in the process of inserting the charging gun of the alternating current charging pile into the charging port of the vehicle for communication, the disclosure embodiment can detect whether the connection operation of the vehicle is received, i.e., whether the charging gun is inserted into the alternating current charging pile. If the connection operation of the vehicle is detected, the alternating current charging pile can send a second PWM signal to the vehicle.

[0090] For example, if the alternating current charging pile detects that the voltage value on the control guide signal line changes from 12V to 9V, it is determined that the vehicle is connected with the alternating current charging pile. When the vehicle is detected to be connected with the alternating current charging pile, the alternating current charging pile can send a second PWM signal to the vehicle for a preset time interval. Here, the duty cycle of the second PWM signal can be 5%.

[0091] If the voltage value on the control guide signal line changes from a first voltage value to a second voltage value within the preset time interval after sending the second PWM signal, it is determined that the vehicle and the alternating current charging pile can communicate. The first voltage value can be greater than the second voltage value. For example, the first voltage value is 9V, and the second voltage value is 6V.

[0092] Alternatively, if the vehicle receives the second PWM signal sent by the alternating current charging pile, i.e., the PWM signal with a duty cycle of 5%, the target switch can be controlled to be closed, which is the response of the vehicle to the second PWM signal. Here, the target switch can be Figure 2After the target switch in the vehicle is closed, the voltage on the control pilot signal line detected by the AC charging pile becomes approximately 6V. The AC charging pile can determine that the two can communicate via the first type of PWM signal. That is, the vehicle can recognize the first type of PWM signal sent by the AC charging pile and can enter the communication process between the vehicle and the AC charging pile.

[0093] If the AC charging pile does not detect that the voltage value on the control guide signal line changes from the first voltage value to the second voltage value within the preset time after sending the second PWM signal, it can be determined that the vehicle and the AC charging pile cannot communicate through the first type of PWM signal. In this case, the communication process will not be entered. The AC charging pile can send the second type of PWM signal to the vehicle to guide the vehicle to perform the charging and discharging process.

[0094] The first and second types of PWM signals have different functions. The first type of PWM signal can be used to exchange information between the vehicle and the AC charging station during communication, with the first interval being, for example, (0%, 100%). The second type of PWM signal can be used to indicate the maximum charge and discharge current the AC charging station can provide, guiding the vehicle into the charging and discharging process. The AC charging station can use the second type of PWM signal to instruct the vehicle to close a target switch, thereby controlling charging and discharging through the AC charging station. The target switch is used to open or close the charging and discharging circuit between the vehicle and the AC charging station.

[0095] With this technical solution, after a vehicle is connected to an AC charging station, the AC charging station can send a second PWM signal to the vehicle. The vehicle responds to this second PWM signal by controlling the closing of a target switch. The AC charging station then detects the voltage change on the control guidance signal line and confirms that communication between the vehicle and the AC charging station is possible.

[0096] In order to better illustrate the interaction process between the AC charging pile and the vehicle, the embodiment of the present disclosure provides the following example: Figure 4 The interaction example diagram shown is based on Figure 4 As can be seen, after the AC charging station's charging gun is plugged into the vehicle, the disclosed embodiment can enter the normal charging and discharging process. Specifically, the AC charging station can close switch S1, at which point the CP signal voltage amplitude can change from 12V to 9V. At this point, the AC charging station can send a second PWM signal to the vehicle, such as a 1s PWM signal with a 5% duty cycle.

[0097] Optionally, the vehicle can close the target switch S2 after detecting that the second PWM signal lasts for a first duration, at which time the CP signal voltage amplitude can change from 9V to 6V. Here, the first duration can be 500ms. After detecting that the CP signal of 6V lasts for the first duration, the alternating current charging pile can send a VIN code request to the vehicle, and receive the VIN code replied by the vehicle to authenticate the VIN code.

[0098] After the authentication passes, the alternating current charging pile can send a data transmission process exit instruction to the vehicle, i.e., after the VIN transmission process between the alternating current charging pile and the vehicle is completed, the alternating current charging pile can send a data transmission process exit instruction to the vehicle to instruct the vehicle to control the target switch. That is, the vehicle can disconnect the target switch S2 after receiving the transmission process exit instruction, at which time the CP signal voltage amplitude can change from 6V to 9V.

[0099] It should be noted that during the authentication of the vehicle by the alternating current charging pile, the vehicle can be in an online state or an offline state.

[0100] When the alternating current charging pile detects the above voltage amplitude change, it can upload the vehicle VIN code receiving condition and the data transmission process exit condition to the server, and receive the charge and discharge instruction (charging instruction / discharge instruction) and the maximum allowed charge and discharge current (maximum allowed charging current / maximum allowed discharging current) issued by the server. The VIN code receiving condition can include specific information of the vehicle VIN code, and the data transmission process exit condition can be that the vehicle and the alternating current charging pile stop data transmission.

[0101] On this basis, the alternating current charging pile can send a first PWM signal to the vehicle to instruct the vehicle to close the target switch S2, at which time the CP signal voltage amplitude can change to 6V. The alternating current charging pile receives the CP signal of 6V and determines that the CP signal lasts for a second duration, and then closes the alternating current contactor to start charging and discharging, i.e., to start charging or start discharging. Exemplarily, the second duration can be 1s.

[0102] Figure 4 is an interactive process of triggering charging and discharging. Before charging and discharging, the alternating current charging pile and the vehicle can first authenticate through interaction, and after the authentication passes, enter the charging and discharging process. It should be noted that the entire above interactive process is that the vehicle and the alternating current charging pile are in an online state, so as to ensure the normal triggering of charging and discharging.

[0103] After the AC charging pile closes the AC contactor to start the charging and discharging, in order to realize real-time interaction between the vehicle and the AC charging pile when the vehicle is offline, the AC charging pile is offline or both the vehicle and the AC charging pile are offline. When at least one of the AC charging pile and the vehicle is offline, the AC charging pile can stop sending a specified signal to the vehicle every interval of a preset time length, and receive real-time information sent by the vehicle, so as to ensure that the vehicle and pile interaction demand can be realized even if at least one of the two is offline.

[0104] Optionally, when the AC charging pile and the vehicle are both online, the vehicle and the AC charging pile can not directly interact during the charging and discharging process, but interact through the server as an intermediary to control the charging and discharging process by the server. The control process can be as shown in Figure 5

[0105] Figure 5 It can be known that when the vehicle and the AC charging pile are both online, the AC charging pile and the server can receive the real-time information sent by the vehicle, and through the real-time information, the AC charging pile can control the charging and discharging of the vehicle, and at the same time, the server can obtain charging and discharging indication information (charging indication information or discharging indication information) based on the real-time information of the vehicle, such as sending stop indication information to the AC charging pile. In addition, the AC charging pile can disconnect the AC contactor after receiving the stop indication information to end the charging and discharging. Here, the stop indication information can be stop charging indication information or stop discharging indication information.

[0106] In addition, when the vehicle and / or the AC charging pile are offline, the AC charging pile and the vehicle can interact in real time through the CP signal, and the interaction process can be determined according to the specific offline device. The corresponding control device for the interaction process is not the same when the offline devices are not the same. For example, when it is determined that the vehicle is offline or the AC charging pile is offline, the disclosed embodiment can control the interaction process through the server, and when the vehicle and the AC charging pile are both offline, the disclosed embodiment can control the interaction process through the AC charging pile.

[0107] After the AC charging pile receives the real-time information sent by the vehicle, it can send the charging and discharging information of this time to the vehicle, and then send the charging and discharging duty cycle (first PWM signal) to complete the start of the charging and discharging process. Finally, the disclosed embodiment can control the end of the charging and discharging according to the offline state of the vehicle and the AC charging pile by the server or the AC charging pile.

[0108] ​​It should be noted that, in the communication process, the vehicle can be configured to send real-time information to the alternating current charging pile by controlling the off duration or the on duration of the target switch in a time period, and the alternating current charging pile can be configured to analyze the information sent by the vehicle according to the voltage change on the control guide signal line. It can be seen that the real-time bidirectional interaction between the alternating current charging pile and the vehicle can be realized by the CP signal according to the embodiments of the present disclosure.

[0109] In the case that the alternating current charging pile and the vehicle are connected, if at least one of the alternating current charging pile and the vehicle is in an offline state, the alternating current charging pile can stop sending the specified signal to the vehicle every interval of a preset time duration, so that the vehicle can be aware that at least one of the alternating current charging pile and the vehicle is offline through the stopping operation. On this basis, the alternating current charging pile can receive real-time information from the vehicle, so that the communication requirement between the alternating current charging pile and the vehicle can still be met in the case of offline.

[0110] Figure 6 FIG. 8 is a flowchart illustrating another communication method of an alternating current charging pile according to an example embodiment. As shown in FIG. 8, the communication method of the alternating current charging pile can include the following steps. Figure 6

[0111] In step S210, in the process of charging and discharging of the alternating current charging pile and the vehicle, if at least one of the alternating current charging pile and the vehicle is offline, the alternating current charging pile stops sending the first PWM signal to the vehicle every interval of a preset time duration, and instructs the vehicle to control the target switch to be on or off to receive real-time information of the vehicle.

[0112] As an optional manner, the alternating current charging pile can stop sending the specified signal to the vehicle every interval of a preset time duration by stopping sending the first PWM signal. That is, in the process of charging and discharging of the alternating current charging pile and the vehicle, if at least one of the alternating current charging pile and the vehicle is offline, the alternating current charging pile can stop sending the first PWM signal to the vehicle every interval of a preset time duration, and instruct the vehicle to control the target switch to be on or off to receive real-time information of the vehicle.

[0113] As described above, in the process of charging and discharging of the alternating current charging pile and the vehicle, if at least one of the alternating current charging pile and the vehicle is offline, the alternating current charging pile can stop sending the specified signal to the vehicle every interval of a preset time duration. Specifically, the alternating current charging pile can stop sending the first PWM signal to the vehicle every interval of a preset time duration.

[0114] ​For example, after detecting that the vehicle and / or the alternating current charging pile is in an offline state, the alternating current charging pile can stop sending a duty cycle (first PWM signal) 1 s every minute interval, so as to indicate the vehicle to disconnect the target switch S2 through the stop operation, and to send real-time information such as real-time SOC (State of Charge), battery temperature, and charging / discharging current to the alternating current charging pile by shaking the target switch S2. That is, the real-time information received by the alternating current charging pile can be sent by the vehicle by shaking the target switch S2.

[0115] It should be noted that after the alternating current charging pile stops sending the first PWM signal to the vehicle every preset time interval, the alternating current contactor of the alternating current charging pile can also be disconnected. On this basis, the vehicle is instructed to control the target switch to be turned on and off to receive real-time information of the vehicle and respond to the real-time information. Here, the first PWM signal can be referred to as a charging / discharging PWM, and the alternating current contactor of the alternating current charging pile and the target switch S2 can be in a closed state during the sending of the first PWM signal, that is, the first PWM is mainly used to indicate the maximum charging / discharging current that can be provided by the alternating current charging pile.

[0116] That is, the alternating current charging pile sending the first PWM signal to the vehicle indicates that both are in the charging / discharging process. Conversely, when the alternating current charging pile stops sending the first PWM signal to the vehicle, it indicates that the charging / discharging process of both is interrupted. At this time, the alternating current charging pile and the vehicle can enter a communication process, that is, the vehicle and the alternating current charging pile can exchange information under the condition that the sending of the first PWM signal is detected to be stopped.

[0117] In summary, when the vehicle and / or the alternating current charging pile is detected to be in an offline state, the alternating current charging pile can stop sending the first PWM signal to the vehicle every preset time interval, and the alternating current contactor of the alternating current charging pile can be disconnected. Here, the preset time interval can be 1 minute. Based on the disconnection operation, the alternating current charging pile can instruct the vehicle to control the target switch S2 to be turned on and off to receive real-time information of the vehicle and respond to the real-time information.

[0118] From the above introduction, it is known that the real-time information of the vehicle can include SOC, battery temperature, and charging / discharging current information, etc., which can be sent by shaking the target switch. That is, the vehicle can send real-time information to the alternating current charging pile by controlling the opening / closing time of the target switch in a time period, and the alternating current charging pile can analyze the real-time information sent by the vehicle according to the voltage change on the control guide signal line.

[0119] Figure 7 is an example of a schematic diagram for encoding and defining the action of the target switch. As Figure 7As shown, t_close represents the duration of the target switch being closed in a time period T, and t_open represents the duration of the target switch being opened in a time period T. When the target switch is closed, the voltage value on the control pilot signal line detected by the alternating current charging pile is 6V, and when the target switch is opened, the voltage value on the control pilot signal line detected by the alternating current charging pile is 9V. The falling edge of the signal, that is, the time when the voltage value on the control pilot signal line changes from 9V to 6V, can be used as the end time of a time period. . Wherein, The duration of a time period T can be Value_S2, and Value_S2 represents the proportion of the duration of the target switch being opened in a time period.

[0120] The embodiments of the present disclosure can define the encoding of the real-time information sent by the vehicle to the alternating current charging pile through the switching of the target switch in the communication process. For example, Value_S2 being 20% represents information 0, Value_S2 being 40% represents information 1, Value_S2 being 60% represents a start bit, and Value_S2 being 80% represents an end bit.

[0121] Taking Value_S2 being 20% as an example, assuming that a time period is 10s, in the 10s, the vehicle can control the target switch to be closed for 8s and opened for 2s, and the alternating current charging pile detects that the voltage on the control pilot signal line changes to, in a time period, the duration of the voltage value being 6V is 8s, and the duration of the voltage value being 9V is 2s. If the alternating current charging pile detects such a voltage change in a time period, the information sent by the vehicle is decoded according to the voltage change as 0.

[0122] In addition, the embodiments of the present disclosure can also represent Value_S2 by the proportion of the duration of the target switch being closed in a time period, that is, Value_S2 being represented by the proportion of the duration of the target switch being closed. For example, Value_S2 being 80% represents information 0, Value_S2 being 60% represents information 1, Value_S2 being 40% represents a start bit, and Value_S2 being 20% represents an end bit.

[0123] It should be noted that the above examples of Value_S2 being 20%, 40%, etc. are only for explanation and do not limit the embodiments.

[0124] Through the above technical solution, the encoding definition of Value_S2 can be in the range of (0%, 100%), and the alternating current charging pile can analyze the real-time information sent by the vehicle according to the voltage change on the control pilot signal line.

[0125] To better illustrate the communication process between the alternating current charging pile and the vehicle, the present embodiment of the disclosure gives an example diagram shown in Figure 8 , Figure 9 and Figure 10 . Among them, Figure 8 is an example diagram of interaction between the vehicle, the alternating current charging pile and the server when the vehicle is in an offline state and the alternating current charging pile is in an online state; Figure 9 is an example diagram of interaction between the vehicle, the alternating current charging pile and the server when the vehicle is in an online state and the alternating current charging pile is in an offline state; Figure 10 is an example diagram of interaction between the vehicle and the alternating current charging pile when both the vehicle and the alternating current charging pile are in an offline state.

[0126] Based on Figure 8 to Figure 10 , it can be known that when it is detected that the vehicle and / or the alternating current charging pile is in an offline state, the alternating current charging pile can stop sending a duty cycle (first PWM signal) 1s to the vehicle and disconnect the alternating current contactor every minute interval. After the vehicle detects the stop of the first PWM signal sending, it can disconnect the target switch S2, and through the target switch S2, it can jitter to send real-time information such as real-time SOC, battery temperature and charge-discharge current to the alternating current charging pile.

[0127] After the alternating current charging pile receives the real-time information, it can respond to it, that is, after receiving the real-time information sent by the vehicle, the alternating current charging pile can send response information to the vehicle based on the real-time information. Here, the response information can include charging-discharging charging information, which can be calculated and obtained by the alternating current charging pile after receiving the real-time information sent by the vehicle.

[0128] It should be noted that during the process of charging the vehicle by the alternating current charging pile, after receiving the real-time information sent by the vehicle, the alternating current charging pile can send charging charging information to the vehicle based on the real-time information, and at this time, the charging information can be the fee that the vehicle needs to pay to the alternating current charging pile (alternating current charging pile platform).

[0129] Alternatively, during the process of discharging the vehicle by the alternating current charging pile, after receiving the real-time information sent by the vehicle, the alternating current charging pile can send discharging charging information to the vehicle based on the real-time information, and at this time, the charging information can be the fee that the alternating current charging pile (alternating current charging pile platform) needs to pay to the vehicle.

[0130] On this basis, the alternating current charging pile can send a first PWM signal to the vehicle, wherein the first PWM signal can be used to instruct the vehicle to close the target switch. After that, when it is detected that the voltage value on the control pilot signal line changes from a first voltage value to a second voltage value, the alternating current charging pile can start charging and discharging (start charging / start discharging), at which time it can control the alternating current contactor to close. The first voltage value can be greater than the second voltage value.

[0131] For example, after the alternating current charging pile sends the response information to the vehicle, it can send a charging and discharging duty cycle (first PWM signal) to the vehicle, and after the vehicle receives it, it can close the target switch S2, at which time the CP signal voltage amplitude can change from 9V to 6V. On this basis, when the alternating current charging pile receives the 6V CP signal and the 6V CP signal lasts for 1s, it can close the alternating current contactor to start charging and discharging.

[0132] As another optional way, when the vehicle is in an offline state and the alternating current charging pile is in an online state, the alternating current charging pile can send the real-time information of the vehicle to the server, and then receive the charging and discharging instruction information from the server, and based on the charging and discharging instruction information, it can control the charging and discharging of the vehicle.

[0133] Since the vehicle is in an offline state and cannot upload real-time information to the server, when the server detects that the vehicle is in an offline state, it can send the offline state to the alternating current charging pile. In other words, the offline state of the vehicle can be received by the alternating current charging pile from the server, that is, when the server detects that the vehicle is in an offline state, it can send the offline state of the vehicle to the alternating current charging pile. After receiving the real-time information from the vehicle, the alternating current charging pile can send response information to the vehicle on one hand to enter the charging and discharging process, and on the other hand, the alternating current charging pile can forward the real-time information of the vehicle it receives to the server, that is, upload the information of the vehicle to the server.

[0134] On this basis, the alternating current charging pile can receive the charging and discharging instruction information sent by the server, and based on the charging and discharging instruction information, it can control the charging and discharging of the vehicle. The charging and discharging instruction information can be obtained by the server when it receives the real-time information sent by the vehicle. For example, the charging and discharging instruction information can include stop instruction information, and the server can send the stop instruction information to the alternating current charging pile based on the real-time information of the vehicle if it determines to end the charging and discharging. After receiving the stop instruction information, the alternating current charging pile can respond to the real-time information sent by the vehicle next time and end the charging and discharging.

[0135] In other words, when charging and discharging need to end, the server can send a stop instruction to the AC charging pile. Upon receiving this stop instruction, the AC charging pile can stop sending the duty cycle (first PWM signal) to the vehicle. After receiving the next real-time information from the vehicle, the AC charging pile can reply with the last real-time information and then disconnect the AC contactor to end charging and discharging. Otherwise, the AC charging pile can stop sending the first PWM signal to the vehicle at preset intervals and disconnect the AC charging pile's AC contactor, enabling communication between the vehicle and the pile and switching between charging and discharging, thereby achieving real-time interaction between the AC charging pile and the vehicle.

[0136] That is to say, when the vehicle is offline and the AC charging pile is online, the AC charging pile can receive the stop instruction information sent by the server and stop sending the first PWM signal to the vehicle. After that, the AC charging pile can receive the real-time information sent by the vehicle next time and can respond to the real-time information.

[0137] like Figure 8 As shown, after receiving the stop indication information (charging stop instruction / discharging stop instruction) sent by the server, the AC charging pile can stop sending the duty cycle, where the duty cycle can be the first PWM signal, that is, stop sending the first PWM signal to the vehicle. When the vehicle detects that the first PWM signal stops sending, it can send the last real-time information. After the AC charging pile responds to the last real-time information, it can disconnect the AC contactor to end charging and discharging.

[0138] Optionally, when the AC charging station is offline and the vehicle is online, the AC charging station can receive charging and discharging instruction information sent by the vehicle. This charging and discharging instruction information can be sent to the vehicle by the server after receiving real-time information from the vehicle. Based on this, the AC charging station can control the charging and discharging of the vehicle based on the charging and discharging instruction information.

[0139] When in an offline state, the AC charging pile cannot upload its interaction with the vehicle to the server, nor can it receive charging and discharging instruction information from the server. In this case, the embodiment of the present disclosure can reduce the charging power of the AC charging pile and charge the vehicle according to the first specified power.

[0140] For example, an AC charging station can charge a vehicle at half its maximum supported charging power. The interaction between the AC charging station and the vehicle may include VIN code reception, data transmission process exit, and real-time vehicle information. Charge and discharge indication information may include charge and discharge instructions, maximum allowable charge and discharge current, and stop indication information.

[0141] Optionally, when the AC charging pile is in the offline state, the embodiment of the present disclosure can also reduce the discharging power of the vehicle and discharge the AC charging pile according to the second specified power. For example, the AC charging pile can reduce the discharging power of the vehicle by limiting the power, or can also send a power reduction indication information to the vehicle to control the vehicle to reduce the discharging power through the power reduction indication information. For example, the vehicle is instructed to discharge the AC charging pile at half of the maximum discharging power supported by the vehicle.

[0142] In order to ensure the normal interaction between the vehicle and the AC charging pile when the AC charging pile is in the offline state, the embodiment of the present disclosure can transmit data between the vehicle and the server, and can forward the information issued by the server to the AC charging pile through the CP signal.

[0143] For example, the offline state of the AC charging pile can be received by the vehicle from the server, that is, when the server detects that the AC charging pile of the vehicle is in the offline state, it can send the offline state to the vehicle. Then, on the one hand, the vehicle can send real-time information to the AC charging pile in a jittering manner, and on the other hand, when the AC charging pile is in the offline state, the vehicle can upload its real-time information to the server.

[0144] On this basis, the AC charging pile can receive the charging and discharging indication information sent by the vehicle, which can be sent by the server to the vehicle after receiving the real-time information sent by the vehicle. For example, the charging and discharging indication information can include stop indication information (charging stop instruction / discharge stop instruction). If the server determines to end the charging and discharging based on the real-time information sent by the vehicle, it can send the stop indication information to the vehicle. After receiving the stop indication information, the vehicle can send the stop indication information to the AC charging pile by jittering the target switch.

[0145] In other words, the AC charging pile can receive the stop indication information sent by the vehicle, and can end the charging and discharging after receiving the stop indication information.

[0146] In addition, when it is necessary to end the charging and discharging, the server can issue a stop indication information to the vehicle to forward the stop indication information to the AC charging pile through the vehicle, that is, the vehicle can forward the stop indication information to the server when interacting with the AC charging pile next time. Here, the stop indication information can be received at the same time as the real-time information of the vehicle, or can also be received separately, and the receiving order of the two can be selected according to the actual situation.

[0147] After receiving the real-time information and stop instruction information sent by the vehicle, the AC charging pile can reply to the next real-time information sent by the vehicle, that is, reply to the last real-time information, and then disconnect the AC contactor to end charging and discharging. Otherwise, the AC charging pile can stop sending the first PWM signal to the vehicle at preset intervals and disconnect the AC contactor of the AC charging pile, enabling communication between the vehicle and the charging pile and switching between charging and discharging, thereby realizing real-time interaction between the AC charging pile and the vehicle.

[0148] That is, when the AC charging pile is in an offline state and the vehicle is in an online state, the AC charging pile can receive the real-time information and stop instruction information sent by the vehicle next time and respond to the real-time information.

[0149] like Figure 9 As shown, after receiving the stop instruction information (charging stop instruction / discharging stop instruction) sent by the server, the vehicle can send a stop instruction information the next time it interacts with the AC charging pile. The AC charging pile can reply with the last real-time information, and then the AC contactor can be disconnected to end charging and discharging.

[0150] Optionally, when the AC charging pile and the vehicle are in an offline state, the AC charging pile can receive real-time information sent by the vehicle, and based on the real-time information, the AC charging pile can obtain charging and discharging indication information, and based on the charging and discharging indication information, the AC charging pile can control the charging and discharging of the vehicle.

[0151] When in an offline state, the AC charging station cannot upload its interaction with the vehicle to the server, nor can it receive charging and discharging instructions from the server. Simultaneously, the vehicle cannot upload real-time information to the server. In this case, the AC charging station can reduce its charging power and charge the vehicle according to the first specified power. For example, the AC charging station can charge the vehicle at half its maximum supported charging power.

[0152] As above, when the AC charging pile and the vehicle are both in an offline state, the embodiment of the present disclosure may also reduce the discharge power of the vehicle and discharge the AC charging pile according to the second designated power.

[0153] In order to ensure normal interaction between the vehicle and the AC charging pile when both the AC charging pile and the vehicle are in an offline state, the embodiment of the present disclosure can obtain charging and discharging indication information through the AC charging pile.

[0154] The alternating current charging pile can analyze the real-time information sent by the vehicle through the shaking mode of the vehicle, and determine whether to end the charging and discharging based on the analysis result. If it is determined to end the charging and discharging, it can stop sending the duty cycle (first PWM signal) to the vehicle. Then, after receiving the real-time information sent by the vehicle, the alternating current charging pile can reply to the last real-time information, and then disconnect the alternating current contactor to end the charging and discharging.

[0155] That is, when the alternating current charging pile and the vehicle are both offline, if the alternating current charging pile determines to end the charging and discharging, it can stop sending the first PWM signal to the vehicle. On this basis, the next real-time information sent by the vehicle is received and replied to.

[0156] As shown in Figure 10 , during the charging and discharging process, the alternating current charging pile can determine whether to end the charging and discharging based on the real-time SOC, battery temperature and other real-time information sent by the vehicle. If it is determined to end the charging and discharging, it can stop sending the duty cycle. After receiving the next real-time information sent by the vehicle, the alternating current charging pile can reply to the last real-time information, and then disconnect the alternating current contactor to end the charging and discharging.

[0157] The embodiments of the present disclosure can realize real-time bidirectional interaction between the alternating current charging pile and the vehicle in four cases: the vehicle and the alternating current charging pile are both online, the vehicle is offline, the alternating current charging pile is offline, and the vehicle and the alternating current charging pile are both offline. Not only can the problem that the server cannot control the charging and discharging process between the vehicle and the alternating current charging pile due to the offline of the vehicle or the alternating current charging pile be avoided, but also the stability and safety of the charging and discharging process can be improved. In addition, the embodiments of the present disclosure can realize the interaction between the alternating current charging pile and the vehicle without additional interaction equipment or changing the hardware, which not only ensures the interaction efficiency between the vehicle and the pile, but also reduces the interaction cost.

[0158] Figure 11 is a flow chart of a communication method of a vehicle according to an exemplary embodiment. Please refer to Figure 11 , the communication method of the vehicle can include the following steps.

[0159] In step S310, during the charging and discharging process of the alternating current charging pile and the vehicle, if at least one of the alternating current charging pile and the vehicle is offline, the vehicle stops receiving a specified signal from the alternating current charging pile every interval of a preset time length, and sends real-time information to the alternating current charging pile.

[0160] In the embodiments of the present disclosure, during the charging and discharging process of the vehicle through the alternating current charging pile, if the alternating current charging pile and / or the vehicle is offline, the vehicle can stop receiving a specified signal from the alternating current charging pile every interval of a preset time length, and send real-time information to the alternating current charging pile.

[0161] In some embodiments, the vehicle can stop receiving the first PWM signal from the AC charging pile and control the target switch to send real-time information to the AC charging pile every preset time interval.

[0162] In some other embodiments, after the vehicle sends the real-time information to the AC charging pile, when the vehicle is in an offline state and the AC charging pile is in an online state, the vehicle can send the real-time information of the vehicle to the server through the AC charging pile. Then, the vehicle can perform charging and discharging based on the charging and discharging indication information sent by the server to the AC charging pile.

[0163] In some other embodiments, after the vehicle sends the real-time information to the AC charging pile, when the AC charging pile is in an offline state and the vehicle is in an online state, the vehicle can receive the charging and discharging indication information from the server and send the charging and discharging indication information to the AC charging pile to instruct the AC charging pile to control the charging and discharging of the vehicle. The charging and discharging indication information can be sent by the server to the vehicle after receiving the real-time information sent by the vehicle.

[0164] In some other embodiments, after the vehicle sends the real-time information to the AC charging pile, when the AC charging pile and the vehicle are both in an offline state, the vehicle can send the real-time information to the AC charging pile to instruct the AC charging pile to obtain the charging and discharging indication information based on the real-time information and control the charging and discharging of the vehicle based on the charging and discharging indication information.

[0165] In some other embodiments, when the charging and discharging indication information is stop indication information, the vehicle can send the next real-time information to the AC charging pile and instruct the AC charging pile to end the charging and discharging.

[0166] In some other embodiments, when the vehicle is in an offline state and the AC charging pile is in an online state, the stop receiving the first PWM signal from the AC charging pile can be triggered by the AC charging pile receiving stop indication information sent by the server. Then, the next real-time information is sent to the AC charging pile, and a response of the AC charging pile to the real-time information is received.

[0167] In some other embodiments, when the AC charging pile is in an offline state and the vehicle is in an online state, the vehicle can send the next real-time information and stop indication information to the AC charging pile, and receive a response of the AC charging pile to the real-time information.

[0168] In some embodiments, the vehicle can receive the response information sent by the AC charging pile for the real-time information, and the response information can include charging information of the charging and discharging.

[0169] In some embodiments, the vehicle can receive the response information sent by the AC charging pile for the real-time information, and the response information can include charging information of the charging and discharging.

[0170] In some embodiments, the vehicle can receive the first PWM signal sent by the AC charging pile and close the target switch based on the first PWM signal. At this time, the control of the voltage value on the signal line can start the charging and discharging when the voltage value changes from the first voltage value to the second voltage value. The first voltage value is greater than the second voltage value.

[0171] Figure 12 is a block diagram of a communication device of an AC charging pile according to an exemplary embodiment, as Figure 12 The communication device 400 of the AC charging pile can include a first control module 410.

[0172] The first control module 410 is configured to, during the charging and discharging process of the AC charging pile and the vehicle, if at least one of the AC charging pile and the vehicle is offline, the AC charging pile stops sending a designated signal to the vehicle every interval of a preset time length, and receives real-time information sent by the vehicle.

[0173] In some embodiments, the first control module 410 is configured to stop sending a first PWM signal to the vehicle every interval of a preset time length, and instruct the vehicle to control the target switch to receive real-time information of the vehicle.

[0174] In some embodiments, the communication device 400 of the AC charging pile further includes:

[0175] The charging module is configured to, when the vehicle is in an offline state and the AC charging pile is in an online state, send real-time information of the vehicle to a server; receive charging and discharging instruction information transmitted by the server, and control the charging and discharging of the vehicle based on the charging and discharging instruction information.

[0176] In some embodiments, the charging module is further configured to, when the AC charging pile is in an offline state and the vehicle is in an online state, receive charging and discharging instruction information sent by the vehicle, the charging and discharging instruction information being sent by the server to the vehicle after receiving the real-time information sent by the vehicle; control the charging and discharging of the vehicle based on the charging and discharging instruction information.

[0177] In some embodiments, the charging module is further configured to receive real-time information sent by the vehicle when both the AC charging pile and the vehicle are offline; obtain charging and discharging instruction information based on the real-time information, and control charging and discharging of the vehicle based on the charging and discharging instruction information.

[0178] In some embodiments, the charging module is further configured to reduce charging power of the AC charging pile when the AC charging pile is offline, and charge the vehicle according to a first specified power.

[0179] In some embodiments, the charging module is further configured to reduce discharging power of the vehicle when the AC charging pile is offline, and discharge the AC charging pile according to a second specified power.

[0180] In some embodiments, the charging module is further configured to respond to real-time information sent by the vehicle next time when the charging and discharging instruction information is stop instruction information, and end charging and discharging.

[0181] In some embodiments, the charging module is further configured to receive the stop instruction information sent by the server when the vehicle is offline and the AC charging pile is online, and stop sending the first PWM signal to the vehicle; receive real-time information sent by the vehicle next time, and respond to the real-time information.

[0182] In some embodiments, the charging module is further configured to receive real-time information sent by the vehicle next time and the stop instruction information when the AC charging pile is offline and the vehicle is online, and respond to the real-time information.

[0183] In some embodiments, the charging module is further configured to, when both the AC charging pile and the vehicle are offline, stop sending the first PWM signal to the vehicle if it is determined to end charging and discharging; receive real-time information sent by the vehicle next time, and respond to the real-time information.

[0184] In some embodiments, the communication device 400 of the AC charging pile further comprises:

[0185] The response module is configured to send response information to the vehicle based on the real-time information, the response information comprising charging and discharging charging information.

[0186] In some embodiments, the charging module is further configured to send a first PWM signal to the vehicle, the first PWM signal being used to instruct the vehicle to close a target switch; start charging and discharging when it is detected that a voltage value on a control guide signal line changes from a first voltage value to a second voltage value, the first voltage value being greater than the second voltage value.

[0187] In some embodiments, the communication device 400 of the alternating current charging pile further comprises:

[0188] The connection module is configured to, in response to a connection operation of the vehicle, send a second PWM signal to the vehicle; and if a voltage value on the control guide signal line is detected to change from a first voltage value to a second voltage value within a preset time period from sending the second PWM signal, it is determined that the vehicle and the alternating current charging pile can communicate, the first voltage value being greater than the second voltage value.

[0189] The embodiments of the present disclosure can realize real-time bidirectional interaction between the alternating current charging pile and the vehicle in four cases of the vehicle and the alternating current charging pile being online, the vehicle being offline, the alternating current charging pile being offline, and the vehicle and the alternating current charging pile being offline, which not only can avoid the problem that the server cannot control the charging process due to the vehicle or the alternating current charging pile being offline, but also can improve the stability and safety of the charging and discharging process.

[0190] Figure 13 is a block diagram of a communication device of a vehicle according to an exemplary embodiment, as Figure 13 The communication device 500 of the vehicle can include a second control module 510.

[0191] The second control module 510 is configured to, during the charging and discharging process of the alternating current charging pile and the vehicle, if at least one of the alternating current charging pile and the vehicle is offline, the vehicle stops receiving a specified signal from the alternating current charging pile every interval of a preset time period, and sends real-time information to the alternating current charging pile.

[0192] In another exemplary embodiment, an alternating current charging pile is also provided, which comprises:

[0193] A memory having a computer program stored thereon;

[0194] A processor configured to execute the computer program in the memory to implement the communication method of the alternating current charging pile.

[0195] Figure 14 is a block diagram of a vehicle 800 according to an exemplary embodiment. As Figure 14 The vehicle 800 can include a processor 801 and a memory 802. The vehicle 800 can also include one or more of a multimedia component 803, an input / output (I / O) interface 804, and a communication component 805.

[0196] The processor 801 is configured to control overall operations of the vehicle 800 to complete all or part of the steps in the above-mentioned communication method of the vehicle. The memory 802 is configured to store various types of data to support operations of the vehicle 800, which can include, for example, instructions for any application or method operating on the vehicle 800, and application-related data, such as contact data, sent and received messages, pictures, audio, video, and the like. The memory 802 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 803 can include a screen and an audio component. The screen can be, for example, a touch screen, and the audio component is configured to output and / or input audio signals. For example, the audio component can include a microphone configured to receive external audio signals. The received audio signals can be further stored in the memory 802 or transmitted through the communication component 805. The audio component also includes at least one speaker configured to output audio signals. The I / O interface 804 provides an interface between the processor 801 and other interface modules, which can be a keyboard, a mouse, a button, and the like. The buttons can be virtual buttons or physical buttons. The communication component 805 is configured to perform wired or wireless communication between the vehicle 800 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, near field communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, and the like, or a combination of one or more of them, is not limited herein. Therefore, the corresponding communication component 805 can include a Wi-Fi module, a Bluetooth module, an NFC module, and the like.

[0197] In an exemplary embodiment, the vehicle 800 can be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic elements for performing the above-mentioned communication method of a vehicle.

[0198] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided, which, when executed by a processor, implement the steps of the above-mentioned communication method of a vehicle. For example, the computer-readable storage medium can be the above-mentioned memory 802 including program instructions, which can be executed by the processor 801 of the vehicle 800 to complete the above-mentioned communication method of a vehicle.

[0199] In another exemplary embodiment, a computer program product is also provided, which contains a computer program capable of being executed by a programmable device, and the computer program has code portions for executing the above-mentioned communication method of a vehicle when executed by the programmable device.

[0200] The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above-described embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0201] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction, and in order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0202] In addition, various different embodiments of the present disclosure can also be combined in any appropriate manner, as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed by the present disclosure.

[0203] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Various simple modifications can be made to the technical solutions of the present disclosure within the technical concept of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0204] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the present disclosure.

[0205] In addition, various different embodiments of the present disclosure can also be combined in any manner as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed in the present disclosure.

Claims

1. A communication method for an AC charging pile, characterized in that: The method comprises: During the charging and discharging process between the AC charging pile and the vehicle, if at least one of the AC charging pile and the vehicle is offline from the server, the AC charging pile stops sending a specified signal to the vehicle at intervals of a preset time and receives real-time information sent by the vehicle; The step of stopping sending a designated signal to the vehicle at each preset time interval and receiving real-time information sent by the vehicle includes: The first PWM signal is stopped from being sent to the vehicle at every preset time interval, and the vehicle is instructed to perform on-off control on a target switch to receive real-time information of the vehicle.

2. The method according to claim 1, characterized in that After receiving the real-time information sent by the vehicle, the method further includes: When the vehicle is in an offline state and the charging pile is in an online state, sending real-time information of the vehicle to the server; Receive the charge and discharge instruction information transmitted by the server, and control the charge and discharge of the vehicle based on the charge and discharge instruction information.

3. The method according to claim 1, characterized in that After receiving the real-time information sent by the vehicle, the method further includes: When the AC charging pile is in an offline state and the vehicle is in an online state, receiving charging and discharging instruction information sent by the vehicle, the charging and discharging instruction information is sent to the vehicle by the server after receiving real-time information sent by the vehicle; The charging and discharging of the vehicle is controlled based on the charging and discharging instruction information.

4. The method according to claim 1, wherein After receiving the real-time information sent by the vehicle, the method further includes: When the AC charging pile and the vehicle are both in an offline state, receiving real-time information sent by the vehicle; Charging and discharging instruction information is acquired based on the real-time information, and charging and discharging of the vehicle is controlled based on the charging and discharging instruction information.

5. The method according to claim 3 or 4, characterized in that The method further comprises: When the AC charging pile is in an offline state, the charging power of the AC charging pile is reduced, and the vehicle is charged according to a first designated power.

6. The method according to claim 3 or 4, characterized in that The method further comprises: When the AC charging pile is in an offline state, the discharge power of the vehicle is reduced, and the AC charging pile is discharged according to a second specified power.

7. The method according to any one of claims 2 to 4, characterized in that: The controlling the charging and discharging of the vehicle based on the charging and discharging instruction information includes: When the charge and discharge instruction information is stop instruction information, a response is made to the next real-time information sent by the vehicle, and charge and discharge are terminated.

8. The method according to claim 7, characterized in that When the charge-discharge instruction information is stop instruction information, responding to the real-time information sent next time by the vehicle includes: When the vehicle is in an offline state and the AC charging pile is in an online state, receiving the stop instruction information sent by the server and stopping sending the first PWM signal to the vehicle; Receive the real-time information sent by the vehicle next time and respond to the real-time information.

9. The method according to claim 7, characterized in that When the charge-discharge instruction information is stop instruction information, responding to the real-time information sent next time by the vehicle includes: When the AC charging pile is in an offline state and the vehicle is in an online state, the real-time information and the stop instruction information sent by the vehicle next time are received, and the real-time information is responded to.

10. The method according to claim 7, characterized in that When the charge-discharge instruction information is stop instruction information, responding to the real-time information sent next time by the vehicle includes: When both the AC charging pile and the vehicle are in an offline state, if it is determined that charging and discharging are to be terminated, stopping sending the first PWM signal to the vehicle; Receive the real-time information sent by the vehicle next time and respond to the real-time information.

11. The method according to claim 1, wherein After receiving the real-time information sent by the vehicle, the method further includes: A response message is sent to the vehicle based on the real-time information, wherein the response message includes charging and discharging charge information.

12. The method according to claim 11, characterized in that After sending the response information to the vehicle based on the real-time information, the method includes: sending a first PWM signal to the vehicle, wherein the first PWM signal is used to instruct the vehicle to close a target switch; When it is detected that the voltage value on the control pilot signal line changes from a first voltage value to a second voltage value, charging and discharging are started, and the first voltage value is greater than the second voltage value.

13. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: sending a second PWM signal to the vehicle in response to a connection operation of the vehicle; If the voltage value on the control guide signal line is detected to change from the first voltage value to the second voltage value within a preset time period from sending the second PWM signal, it is determined that communication between the vehicle and the AC charging pile is possible, and the first voltage value is greater than the second voltage value.

14. A vehicle communication method, characterized in that: The method comprises: During the charging and discharging process between the AC charging pile and the vehicle, if at least one of the AC charging pile and the vehicle is offline from the server, the vehicle stops receiving the first PWM signal from the AC charging pile at preset intervals, controls the on and off of the target switch, and sends real-time information to the AC charging pile.

15. An AC charging pile, characterized in that: The AC charging pile includes: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 13.

16. A vehicle, characterized in that: The vehicle comprises: a memory having a computer program stored thereon; A processor, configured to execute the computer program in the memory to implement the steps of the method according to claim 14.

17. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 14 are implemented.

18. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, implements the steps of the method according to any one of claims 1 to 14.

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