A smart charging method for motor vehicles and the motor vehicle

Abstract

A smart charging method and a motor vehicle are disclosed, wherein the motor vehicle is electrically connected to a charging pile via a charging connection circuit, and the method includes: identifying the type of the charging pile; configuring the charging connection circuit of the motor vehicle to match the charging pile based on the type of the charging pile; determining the target charging protocol corresponding to the charging pile based on the type of the charging pile; and charging the motor vehicle via the configured charging connection circuit based on the target charging protocol.

Description

Technical Field

[0001] This disclosure relates to the field of motor vehicles, and more specifically to a smart charging method for motor vehicles and a motor vehicle. Background Technology

[0002] With the continuous development of motor vehicle charging protocols, there are currently multiple charging protocols, including GBT-DC-2015, CHAdeMo 2.0, CHAOJI, and CHAdeMo 3.0. In the process of continuous evolution of charging protocols, various types of charging piles (used to implement different charging protocols) have also emerged, which puts forward higher requirements for the charging process of motor vehicles.

[0003] Currently, to achieve compatibility between motor vehicles and other types of charging piles, adaptation is typically achieved by adding an external charging adapter to the vehicle, installing a charging adapter on the charging pile side, or allowing the user to manually select the vehicle type and the type of charging pile or charging protocol. However, external charging adapters increase the complexity of the charging process and require additional electrical cables, increasing the vehicle's structural complexity and hindering integrated control. Adding a charging adapter on the charging side only allows for charging pile adaptation to vehicles following different charging protocols; it doesn't enable autonomous and intelligent adaptation to multiple types of charging piles and flexible charging based on multiple charging protocols. Furthermore, the user-manual adaptation process relies entirely on manual selection, resulting in low reliability and a poor human-machine interface. Current adaptation methods also only allow vehicles to adapt to one or two types of charging piles, meaning they can only charge according to one or two charging protocols through corresponding charging piles, failing to achieve good compatibility with multiple types of charging piles.

[0004] Therefore, there is a need for a vehicle charging method and vehicle that, while ensuring a smooth charging process, enables the vehicle to autonomously identify and adapt to various types of charging stations, thereby flexibly charging based on multiple charging protocols. Summary of the Invention

[0005] To address the above issues, this disclosure provides an intelligent charging method and a motor vehicle for motor vehicles. Based on the intelligent charging method and motor vehicle of this application, the charging process of the motor vehicle can be well realized, and the motor vehicle can autonomously identify and adapt to various types of charging piles, thereby flexibly charging based on multiple charging protocols.

[0006] According to one aspect of this disclosure, a smart charging method for a motor vehicle is proposed, wherein the motor vehicle is electrically connected to a charging pile via a charging connection circuit, and the method includes: identifying the type of the charging pile; configuring the charging connection circuit of the motor vehicle to match the charging pile based on the type of the charging pile; determining a target charging protocol corresponding to the charging pile based on the type of the charging pile; and charging the motor vehicle via the configured charging connection circuit based on the target charging protocol.

[0007] In some embodiments, identifying the type of the charging pile includes: acquiring a detection signal associated with the charging pile through a charging pile type detection circuit electrically connected to the charging pile; comparing the detection signal with a preset signal threshold; and determining the type of the charging pile based on the comparison result.

[0008] In some embodiments, the preset signal threshold includes multiple different sub-threshold ranges, each sub-threshold range corresponding to a charging pile type; and comparing the detection signal with the preset signal threshold to determine the type of the charging pile based on the comparison result includes: determining the sub-threshold range corresponding to the detection signal; and determining the charging pile type corresponding to the detection signal based on the sub-threshold range.

[0009] In some embodiments, the type of the charging pile includes at least one of CHAdeMo 2.0, GBT-DC-2015, CHAOJI, and CHAdeMo 3.0.

[0010] In some embodiments, the charging connection circuit includes multiple charging branches, and configuring the charging connection circuit of the motor vehicle to match the charging pile type includes: controlling a selection switch to activate the charging branch corresponding to the type of the charging pile based on the type of the charging pile.

[0011] In some embodiments, each charging branch has a resistor with a different resistance value.

[0012] In some embodiments, the method further includes the step of detecting the connection status of the motor vehicle with the charging station.

[0013] In some embodiments, the step of detecting the connection status between the motor vehicle and the charging pile includes: acquiring a connection status detection signal from a connection status detection node in the charging connection circuit; comparing the connection status detection signal with a preset connection status standard signal; and determining the connection status between the motor vehicle and the charging pile based on the comparison result.

[0014] In some embodiments, comparing the connection status detection signal with a preset connection status standard signal and determining the connection status between the vehicle and the charging pile based on the comparison result includes: if the connection status detection signal is consistent with the preset connection status standard signal, determining the connection status as a normal connection status; if the connection status detection signal is inconsistent with the preset connection status standard signal, determining the connection status as an abnormal connection status.

[0015] In some embodiments, determining the target charging protocol corresponding to the charging pile includes: determining one or more predicted charging protocols corresponding to the charging pile based on the type of the charging pile; receiving communication information from the charging pile, wherein the communication information includes the current charging protocol of the charging pile; and determining the current charging protocol as the target charging protocol if at least one of the one or more predicted charging protocols is consistent with the current charging protocol.

[0016] In some embodiments, when the charging pile type is CHAOJI type or CHAdeMo 3.0 type, the step of detecting the connection status between the motor vehicle and the charging pile includes: turning on the connection status detection branch connected in parallel with the charging branch; obtaining the connection status detection signal from the connection status detection node in the charging connection circuit; comparing the connection status detection signal with a preset connection status standard signal, and determining the connection status between the motor vehicle and the charging pile based on the comparison result.

[0017] According to another aspect of this disclosure, a motor vehicle is provided, the motor vehicle comprising: a charging connection circuit, the motor vehicle being electrically connected to a charging pile via the charging connection circuit; a charging pile type detection circuit; and a controller, the controller communicating with the charging pile type detection circuit and configured to: identify the type of the charging pile based on a detection signal received from the charging pile type detection circuit; configure the charging connection circuit of the motor vehicle to match the charging pile based on the type of the charging pile; determine a target charging protocol corresponding to the charging pile based on the type of the charging pile; and charge the motor vehicle based on the target charging protocol.

[0018] In some embodiments, the charging connection circuit includes: a selection switch; and a plurality of charging branches, each charging branch having a resistor with a different resistance value; wherein the controller is configured to: control the selection switch based on the type of the charging pile to activate the charging branch among the plurality of charging branches corresponding to the type of the charging pile.

[0019] In some embodiments, the charging connection circuit further includes a connection status detection branch connected in parallel with the charging branch, wherein the controller is configured to selectively activate the connection status detection branch according to the type of the charging pile to detect the connection status between the motor vehicle and the charging pile.

[0020] In some embodiments, the charging pile type detection circuit includes: a constant voltage source for providing a predetermined voltage signal to the charging pile; and a charging pile type detection node for providing a detection signal indicating the type of the charging pile in response to the predetermined voltage signal provided by the constant voltage source to the charging pile, wherein the controller is connected to the charging pile type detection node and receives the detection signal to determine the type of the charging pile.

[0021] In some embodiments, the vehicle further includes an adapter, wherein the charging station is connected to the vehicle via the adapter. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The following drawings are not intentionally drawn to scale to actual size; their focus is on illustrating the main points of this disclosure.

[0023] Figure 1 An exemplary flowchart of a smart charging method 100 for a motor vehicle according to an embodiment of the present disclosure is shown;

[0024] Figure 2 An exemplary flowchart of process S101 for identifying the type of the charging station according to an embodiment of the present disclosure is shown;

[0025] Figure 3 An exemplary flowchart of process S1012 for determining the type of charging pile based on comparison results when the preset signal threshold includes multiple different sub-threshold ranges is shown according to an embodiment of the present disclosure;

[0026] Figure 4 A schematic diagram of a charging connection circuit having multiple charging branches according to an embodiment of the present disclosure is shown;

[0027] Figure 5 A schematic diagram of a charging connection circuit 200 having a connection status detection branch according to an embodiment of the present disclosure is shown;

[0028] Figure 6An exemplary flowchart of process S103 for determining the target charging protocol corresponding to the charging pile according to an embodiment of the present disclosure is shown;

[0029] Figure 7 An example circuit diagram of a motor vehicle 200 according to an embodiment of the present disclosure is shown;

[0030] Figure 8 It shows Figure 7 A partial circuit diagram showing the electrical connection between motor vehicle 200 and a GBT-DC-2015 type charging pile;

[0031] Figure 9 It shows Figure 7 A partial circuit diagram showing the electrical connection between motor vehicle 200 and a CHAdeMo 2.0 type charging station;

[0032] Figure 10 An exemplary block diagram of a motor vehicle according to an embodiment of the present disclosure is shown. Detailed Implementation

[0033] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this disclosure.

[0034] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not specifically singular and may include plural forms. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0035] While this application makes various references to certain modules of the systems according to embodiments of this application, any number of different modules can be used and run on user terminals and / or servers. The modules described are merely illustrative, and different aspects of the systems and methods may use different modules.

[0036] Flowcharts are used in this application to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed in exact order. Instead, various steps can be processed in reverse order or simultaneously as needed. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0037] According to one aspect of this application, a smart charging method for motor vehicles is proposed. The motor vehicle is electrically connected to a charging station via a charging connection circuit.

[0038] The charging connection circuit is a charging connection circuit disposed in the motor vehicle. This charging connection circuit can be integrated, for example, into the internal circuitry of the motor vehicle, or, depending on actual needs, into the charging port of the motor vehicle. It should be understood that the embodiments of this disclosure are not limited to the specific arrangement and integration method of the charging connection circuit within the motor vehicle.

[0039] Figure 1 An exemplary flowchart of a smart charging method 100 for a motor vehicle according to an embodiment of the present disclosure is shown. The following will refer to... Figure 1 This intelligent charging method will be described in more detail.

[0040] Reference Figure 1 First, in step S101, the type of the charging station is identified.

[0041] It should be understood that, depending on actual needs, the type of charging pile may include, for example, CHAdeMo 2.0, GBT-DC-2015, CHAOJI, CHAdeMo 3.0, etc. It should also be understood that the type of charging pile corresponds to the type of charging protocol it follows during the charging process. For example, a charging pile of type CHAdeMo 2.0 follows the CHAdeMo 2.0 protocol during the charging process.

[0042] It should be understood that, for example, the type of charging pile can be determined by setting up a charging pile type detection circuit electrically connected to the charging pile, acquiring a detection signal associated with the charging pile, and then determining the type of the charging pile based on the detection signal. Alternatively, the type of the charging pile can also be determined by other means, such as by wireless communication with the charging pile. The embodiments of this disclosure are not limited to the specific method of identifying the type of the charging pile.

[0043] Subsequently, in step S102, the charging connection circuit of the motor vehicle is configured to match the charging pile based on the type of the charging pile.

[0044] The charging connection circuit refers to a circuit used to adapt to different types of charging piles to realize the charging process of the motor vehicle via the charging pile. For example, one end of the charging connection circuit is connected to the motor vehicle and the other end is connected to the charging pile.

[0045] The process of configuring the charging connection circuit of the motor vehicle to match the charging pile refers to configuring the circuit components (e.g., resistors) or circuit structure (e.g., disconnecting or connecting one or more branches in the circuit) of the charging connection circuit so that the configured charging connection circuit can match the identified charging pile. Here, matching means that the configured charging connection circuit meets the current and / or voltage requirements of the charging protocol corresponding to the charging pile. For example, the current value flowing through the charging connection circuit or the input voltage value of the input terminal of the charging connection circuit connected to the charging pile is within the normal operating current or voltage range of the charging pile.

[0046] After configuring the charging connection circuit to match the charging pile, in step S103, based on the type of the charging pile, the target charging protocol corresponding to the charging pile is determined, and the motor vehicle is charged through the configured charging connection circuit based on the target charging protocol.

[0047] The target charging protocol refers to the charging protocol used during the charging process between the charging station and the motor vehicle.

[0048] For example, depending on actual needs, the target charging protocol corresponding to the charging pile can be determined by the following method: For example, on the vehicle side, based on the type of the charging pile, one or more predicted charging protocols corresponding to the charging pile are determined; then, communication information from the charging pile is received, wherein the communication information includes the current charging protocol of the charging pile; and if at least one of the one or more predicted charging protocols is consistent with the current charging protocol, the current charging protocol is determined as the target charging protocol.

[0049] Based on the above, this application identifies the type of charging pile and configures the charging connection circuit and determines the target charging protocol based on that type, enabling the vehicle to autonomously identify different charging piles and intelligently adapt to the corresponding charging piles. Compared to the current method of adding an additional charging adapter device external to the vehicle, the charging connection circuit in this application can be easily and conveniently integrated into the vehicle, thereby realizing the integrated control design of the vehicle. Compared to the method of setting a charging adapter device on the charging pile side for adaptation, the method in this application enables the vehicle to autonomously and intelligently adapt to multiple different types of charging piles, thereby flexibly charging based on multiple charging protocols. Furthermore, compared to the adaptation process based on manual selection by the user, the identification and adaptation processes in this application are automated operations, requiring no human intervention, resulting in higher reliability and accuracy, and improving the human-machine interaction experience.

[0050] In some embodiments, the process S101 for identifying the type of the charging station can be described in more detail, for example. Figure 2An exemplary flowchart of process S101 for identifying the type of charging station according to an embodiment of this disclosure is shown. (Refer to...) Figure 2 First, in step S1011, a predetermined voltage signal is applied to the charging pile through the charging pile type detection circuit, and in response to the voltage signal, a detection signal associated with the charging pile is acquired. The charging pile type detection circuit is electrically connected to the charging pile.

[0051] The charging pile type detection circuit refers to the circuit used to detect the type of the charging pile. It should be understood that, depending on actual needs, the charging pile type detection circuit may include, for example, a constant voltage source, a charging pile type detection node, etc. (as described in the appendix below). Figure 7 (Detailed explanation)

[0052] The predetermined voltage signal refers to a voltage signal having a predetermined voltage value. It should be understood that the voltage value of the predetermined voltage signal can be selected according to actual needs, for example, it could be 12V, or it could be 24V. The embodiments of this disclosure are not limited to the specific signal value of the predetermined voltage signal.

[0053] The signal associated with the charging station refers to a signal that reflects the type of the charging station, which may be, for example, a voltage signal or a current signal. Embodiments of this disclosure are not limited to the specific type of signal.

[0054] For example, the charging pile type detection circuit includes a constant voltage source and a type detection resistor. The constant voltage source provides a 12V voltage to the charging pile. Due to the different internal resistances of the charging pile (it should be understood that when a connector and adapter are connected, the internal resistance of the charging pile can include the internal resistance of the charging pile, the internal resistance of the connector, and the internal resistance of the adapter), the voltage obtained by the charging pile in the charging pile type detection circuit is different. The voltage obtained by the charging pile in the charging pile type detection circuit can be used as a detection signal.

[0055] Subsequently, in step S1012, the detection signal is compared with a preset signal threshold, and the type of the charging pile is determined based on the comparison result.

[0056] The preset signal threshold can be set by the user or determined by the vehicle control system based on relevant parameters of the charging pile. Depending on actual needs, the preset signal threshold can be a voltage value or a current value. The embodiments disclosed herein are not limited to the specific setting method and content of this preset signal threshold.

[0057] The preset signal threshold may, for example, include multiple sub-threshold ranges, each corresponding to a different charging pile type; or the preset signal threshold may also be multiple sub-signal threshold points, each corresponding to a different charging pile type. The embodiments of this disclosure are not limited to the number of sub-threshold ranges or the number of sub-signal threshold points possessed by the preset signal threshold.

[0058] The process of determining the type of the charging pile based on the comparison results can be, for example, when the preset signal threshold is multiple sub-signal threshold points, such as three sub-signal threshold points (corresponding to three different charging pile types) D1, D2, D3, the detection signal can be compared with the three sub-signal threshold points. If the detection signal is the same as the sub-signal threshold point D2, then the charging pile type corresponding to the sub-signal threshold point D2 is determined as the type of the charging pile.

[0059] However, it should be understood that the above is only an example of determining the charging pile type based on comparison results. Depending on actual needs, the charging pile type can also be determined by comparing the detected signal with multiple sub-threshold ranges in a preset signal threshold (as described below). Figure 3 The type of charging station may be determined based on the comparison results, as described above, or by other means. Embodiments of this disclosure are not limited to the specific method of determining the type of charging station.

[0060] Based on the above, in this application, a charging pile detection circuit is set up to obtain a detection signal, and the type of charging pile is determined by comparing the detection signal with a preset signal threshold. This enables the motor vehicle in this application to easily and conveniently determine the type of charging pile, which is beneficial for the subsequent configuration of the charging connection circuit and the determination of the target charging protocol based on the type of charging pile.

[0061] In some embodiments, the preset signal threshold includes multiple different sub-threshold ranges, each sub-threshold range corresponding to a charging pile type. In this case, the aforementioned process S1012 of comparing the detected signal with the preset signal threshold and determining the type of the charging pile based on the comparison result can be described in more detail, for example.

[0062] Figure 3 An exemplary flowchart of process S1012 for determining the type of charging pile based on comparison results when the preset signal threshold includes multiple different sub-threshold ranges, according to an embodiment of the present disclosure, is shown.

[0063] Reference Figure 3 First, in step S1012-1, the sub-threshold range corresponding to the detection signal is determined.

[0064] The sub-threshold range refers to the sub-signal range included by the preset signal threshold. The embodiments of this disclosure are not limited to the specific content or number of sub-threshold ranges.

[0065] The sub-threshold range corresponding to the detection signal refers to the sub-threshold range in which the detection signal is located, that is, the sub-threshold range that includes the detection signal.

[0066] Subsequently, in step S1012-2, the type of charging station corresponding to the detection signal is determined based on the sub-threshold range. For example, the type of charging station corresponding to the sub-threshold range can be directly determined as the type of charging station to which the motor vehicle is connected.

[0067] The process of determining the type of charging station will be explained in more detail below. For example, the signal threshold Da is, for example, a voltage threshold, and it includes, for example, three sub-signal threshold ranges Da1, Da2, and Da3. Sub-signal threshold range Da1, for example, represents a signal range with a voltage value between 1.5V and 2.5V, which corresponds, for example, to a CHAdeMo 2.0 type charging station; sub-signal threshold range Da2, for example, represents a signal range with a voltage value between 5.5V and 6.5V, which corresponds, for example, to a CHAOJI or CHAdeMo 3.0 type charging station; sub-signal range Da3, for example, represents a signal range with a voltage value between 7.5V and 8.5V, which corresponds, for example, to a GBT-DC-2015 type charging station. At this point, for example, if the currently acquired detection signal is a 2V voltage signal, then by comparing the detection signal with the three sub-threshold signals, the sub-signal threshold range Da1 corresponding to the detection signal can be obtained. Then, the charging pile type corresponding to the sub-signal threshold range Da1 (here, for example, the CHAdeMo 2.0 type) can be obtained. Thus, the type of the charging pile can be determined as CHAdeMo 2.0.

[0068] Based on the above, in this application, by setting the preset signal threshold to include multiple different sub-threshold ranges, compared with setting only multiple sub-signal thresholds, the sub-threshold range can improve the reliability and robustness of the determination of the charging pile type, so that when the detection signal deviates slightly from the actual value due to external electromagnetic interference or measurement error, it can still fall within the corresponding sub-threshold range, thereby achieving accurate and reliable determination of the charging pile type.

[0069] In some embodiments, the type of the charging pile includes at least one of CHAdeMo 2.0, GBT-DC-2015, CHAOJI, and CHAdeMo 3.0.

[0070] By setting the charging pile type to include at least one of CHAdeMo 2.0, GBT-DC-2015, CHAOJI, and CHAdeMo 3.0, the identification process of the charging pile can take into account multiple mainstream charging pile types in the current market. This facilitates good identification and adaptation of motor vehicles, allowing them to flexibly apply various types of charging piles and charge based on the corresponding charging protocols according to actual conditions, thus making the charging method widely adaptable.

[0071] In some embodiments, the charging connection circuit includes, for example, multiple charging branches. A charging connection branch refers to a circuit branch in the charging connection circuit that can be selectively turned on.

[0072] The plurality of charging branches are arranged in parallel, for example, and each charging branch corresponds to a type of charging station, that is, when one charging branch is turned on and the other charging branches are turned off, the charging connection circuit can be well adapted to the type of charging station corresponding to that charging branch. It should be understood that the embodiments of this disclosure are not limited to the specific number and specific composition of the charging branches.

[0073] Furthermore, when the charging connection circuit includes multiple charging branches, configuring the charging connection circuit of the motor vehicle to match the charging pile based on the type of the charging pile includes: controlling a selection switch based on the type of the charging pile to activate the charging branch corresponding to the type of the charging pile.

[0074] The selector switch is a switching component used to selectively engage one of the charging branches in the charging branch. Embodiments of this disclosure are not limited to the specific composition of the selector switch.

[0075] Figure 4 A schematic diagram of a charging connection circuit having multiple charging branches according to an embodiment of the present disclosure is shown. (Refer to...) Figure 4The motor vehicle 200 includes, for example, a charging connection branch 210, which is electrically connected to a charging pile 300. Specifically, one end of the charging connection circuit is connected to the charging pile, and the other end is connected to the power source of the motor vehicle, so as to realize the charging process of the power source. The charging connection circuit 210 has, for example, three charging branches 211, 212, and 213 arranged in parallel with each other, and includes, for example, a selection switch S2. The selection switch may include, for example, an idle position (no charging branch is activated), a first charging type position (e.g., charging branch 211 is activated), a second charging type position (e.g., charging branch 212 is activated), and a third charging type position (e.g., charging branch 213 is activated), and the selection switch will switch to different positions based on the type of the charging pile to realize the corresponding charging process. Figure 4 In the example shown, the selector switch S2 is set to the unavailable position.

[0076] Based on the above, in this application, by setting the charging connection circuit to include multiple charging branches and a selection switch, and controlling the selection switch to engage the charging branch corresponding to the type of charging pile based on the type of charging pile, the charging connection circuit can be adjusted in a simple and convenient way, achieving rapid adaptation to different types of charging piles, and making the circuit structure of the charging connection circuit simple, which is beneficial to reducing manufacturing costs.

[0077] In some embodiments, each charging branch has a resistor with a different resistance value.

[0078] By setting resistors with different resistance values ​​for each charging branch, the current in that branch can be easily and conveniently adjusted precisely through the resistors in that branch, thereby affecting the total current in the charging connection circuit. This ensures that the current or corresponding voltage in the charging connection circuit is compatible with the operating current or voltage of the connected charging pile (the current or voltage value required by the charging protocol followed by the charging pile), thus enabling the charging pile to be well-matched with the vehicle and realize the charging process.

[0079] In some embodiments, the method further includes the step of detecting the connection status of the motor vehicle with the charging station.

[0080] The connection status refers to a status parameter reflecting the connection status between the vehicle and the charging station (e.g., whether the vehicle is correctly and securely electrically connected to the charging station). Depending on the actual situation, it may be a status detection signal detected by the vehicle's charging connection circuit, such as a status detection voltage or status detection current value, or it may be other types of signals.

[0081] The step of detecting the connection status of the charging pile can be implemented, for example, by an additional status detection circuit, or it can be implemented via the connection status detection branch and related connection status detection nodes in the charging connection circuit.

[0082] It should be understood that, depending on the specific type of charging station connected, the step of detecting the connection status between the motor vehicle and the charging station may be performed, for example, after configuring the charging connection circuit of the motor vehicle to match the charging station, or it may be performed during the process of configuring the charging connection circuit of the motor vehicle to match the charging station.

[0083] It should be understood that the step of detecting the connection status between the motor vehicle and the charging station is performed before charging the motor vehicle based on the target charging protocol.

[0084] Based on the above, this application detects the connection status between the motor vehicle and the charging pile, ensuring that the motor vehicle and the charging pile are in a stable and correct electrical connection state before charging the motor vehicle based on the target charging protocol. This avoids invalid or inefficient charging caused by incorrect electrical connection, and also avoids damage to the motor vehicle's own circuitry or related electronic components during charging due to incorrect connection methods.

[0085] In some embodiments, the charging connection status is detected, for example, via a connection status detection node in the charging connection circuit.

[0086] It should be understood that, based on actual needs, the connection status detection node can be set at the input end of the charging connection circuit (the end connected to the charging pile), or it can be on a branch of the charging connection circuit. The embodiments of this disclosure are not limited to the specific setting of the connection status detection node.

[0087] Furthermore, the step of detecting the connection status between the vehicle and the charging station includes: firstly, acquiring a connection status detection signal from a connection status detection node in the charging connection circuit. The connection status detection signal can be, for example, a voltage signal or a current signal. Embodiments of this disclosure are not limited to the specific type of connection status detection signal.

[0088] It should be understood that the connection status detection node can be detected over a period of time to obtain the change curve of the connection status detection signal at the connection status detection node. Alternatively, depending on actual needs, the connection status detection node can also be detected after the charging pile or motor vehicle performs a specific action to determine the instantaneous connection status detection signal of the connection status detection node. The embodiments of this disclosure are not limited to the specific detection method of the connection status detection node.

[0089] Secondly, the connection status detection signal is compared with the preset connection status standard signal, and the connection status between the vehicle and the charging pile is determined based on the comparison result.

[0090] The preset connection status standard signal refers to the signal value that the connection status detection node should have under normal and stable connection conditions. It should be understood that, depending on the type of charging pile connected, the connection status standard signal may have different signal values. The embodiments of this disclosure are not limited to the specific signal value of the connection status standard signal.

[0091] It should be understood that, depending on actual needs, the standard connection status signal may be, for example, the signal change curve that the connection status detection node should have over a period of time, or it may be the signal value that the connection status detection node should present after the motor vehicle or charging pile performs a specific action.

[0092] The process of determining the connection status between a motor vehicle and a charging station based on the comparison results can be, for example, as follows: the connection status is determined to be a normal connection status only if the connection status detection signal is consistent with the preset connection status standard signal.

[0093] Based on the above, in this application, during the process of detecting the charging connection status, a connection status detection signal is obtained from the connection status detection node in the charging connection circuit and compared with a preset connection status standard signal to determine the connection status between the vehicle and the charging pile. On the one hand, the charging connection circuit is reused for the charging connection status detection, which simplifies the circuit structure; on the other hand, by collecting the connection status detection signal and comparing it with the preset connection status standard signal, the detection of the connection status can be achieved accurately and reliably.

[0094] In some embodiments, the connection status detection signal is compared with a preset connection status standard signal, and the connection status between the motor vehicle and the charging pile is determined based on the comparison result, including: if the connection status detection signal is consistent with the preset connection status standard signal, the connection status is determined to be a normal connection status; if the connection status detection signal is inconsistent with the preset connection status standard signal, the connection status is determined to be an abnormal connection status.

[0095] It should be understood that the normal connection state refers to the state in which the vehicle and the charging station are correctly and securely connected. The abnormal connection state refers to the state in which the vehicle and the charging station are not connected normally or are unstable. In the event of an abnormal connection state, the vehicle will, for example, issue an alarm and will not begin the charging process.

[0096] Based on the above, by determining the connection status as a normal connection status when the connection status detection signal is consistent with the preset connection status standard signal, it is possible to effectively distinguish the connection status of the vehicle and the charging pile, which is beneficial for executing the subsequent charging process or issuing an alarm based on the judgment result.

[0097] In some embodiments, when the charging station type is CHAOJI type or CHAdeMo 3.0 type, the step of detecting the connection status between the vehicle and the charging station can be described in more detail, for example. Figure 5 A schematic diagram of a charging connection circuit 200 having a connection status detection branch according to an embodiment of the present disclosure is shown.

[0098] Reference Figure 5 The vehicle 200 includes, for example, a charging connection circuit 210, which has three charging branches 211, 212, and 213. Furthermore, in the case of a CHAOJI type charging station, to achieve connection status detection, the charging connection circuit further includes, for example, a charging status detection branch 214. This charging status detection branch 214 is a circuit branch designed for detecting the charging status, and it can be connected in parallel with the aforementioned multiple charging branches.

[0099] At this time, the steps for detecting the connection status between the vehicle and the charging station include: first, turning on the connection status detection branch connected in parallel with the charging branch. For example, in Figure 5 In this circuit, the connection status detection branch 214, which is connected in parallel with the charging branch, is activated by closing the connection status detection switch S2'. For example, a resistor of appropriate resistance value can be set on this connection status detection branch according to actual needs, so that when the connection status detection circuit 214 is activated, the charging pile (CHAOJI type or CHAdeMo 3.0 type charging pile) electrically connected to the charging connection circuit can detect the corresponding change in current or voltage, thereby initiating the connection status detection process. For example, the circuit components or circuit structure on the charging pile side can be configured accordingly.

[0100] Secondly, the connection status detection signal is obtained from the connection status detection node in the charging connection circuit. For example, when the CHAOJI charging pile starts the connection status detection process and executes the corresponding connection detection action, the connection status detection signal can be obtained from the connection status detection node in the charging connection circuit. Figure 5 The connection status detection node DP2 in the system obtains the corresponding connection status detection signal.

[0101] Finally, the connection status detection signal is compared with a preset connection status standard signal, and the connection status between the vehicle and the charging station is determined based on the comparison result. It should be understood that the process of acquiring the connection status detection signal and the process of determining the connection status based on the comparison have been explained in detail above and will not be repeated here.

[0102] Based on the above, by activating the connection status detection branch when the charging pile type is CHAOJI or CHAdeMo 3.0, the connection status detection process required for the CHAOJI or CHAdeMo 3.0 type charging pile can be well adapted. The voltage or current signal change caused by the activation of the connection status detection branch will trigger the corresponding connection status detection process on the charging pile side, thereby achieving good connection status detection under CHAOJI or CHAdeMo 3.0 type charging piles.

[0103] In some embodiments, the process S103 for determining the target charging protocol corresponding to the charging pile can be described in more detail, for example. Figure 6 An exemplary flowchart of process S103 for determining the target charging protocol corresponding to the charging pile according to an embodiment of the present disclosure is shown.

[0104] Reference Figure 6 First, in step S1031, based on the type of the charging pile, one or more predictive charging protocols corresponding to the charging pile are determined.

[0105] The predicted charging protocol refers to the charging protocol corresponding to the charging station that the vehicle predicts based on the type of the charging station.

[0106] It should be understood that the determined predicted charging protocol may be a single charging protocol or multiple charging protocols. For example, when the charging station type is CHAdeMo 2.0, the vehicle can determine its corresponding charging protocol (i.e., the predicted charging protocol) as CHAdeMo 2.0 based on the type of the charging station. When the charging station type is CHAOJI or CHAdeMo 3.0, since CHAOJI and CHAdeMo 3.0 have the same port structure and only differ in charging protocol, it is impossible to clearly determine the type of charging station or the charging protocol used. In this case, the vehicle determines two charging protocols (i.e., the predicted charging protocol) corresponding to the charging station: the CHAOJI charging protocol and the CHAdeMo 3.0 charging protocol.

[0107] It should be understood that the embodiments of this disclosure are not limited to the specific number of charging protocols included in the predictive charging protocol.

[0108] Subsequently, in step S1032, communication information from the charging pile is received, wherein the communication information includes the current charging protocol of the charging pile.

[0109] It should be understood that the vehicle may receive communication information from the charging station via a communication cable, or it may receive communication information in other ways.

[0110] The communication information may be in binary encoding format, or it may be in character or string form. The embodiments of this disclosure are not limited to the specific format of the communication information.

[0111] The current charging protocol of the charging station refers to the charging protocol that the charging station intends to use when charging the motor vehicle.

[0112] Subsequently, in step S1033, if at least one of the one or more predicted charging protocols is consistent with the current charging protocol, the current charging protocol is determined as the target charging protocol.

[0113] For example, if the charging station is a CHAOJI charging station, as mentioned earlier, the predicted charging protocol determined by the vehicle includes two charging protocols: the CHAOJI charging protocol and the CHAdeMo3.0 charging protocol. If the current charging protocol received from the charging station is CHAOJI, then the vehicle will, for example, use CHAOJI as the target charging protocol for this charging process and discard the CHAdeMo3.0 charging protocol.

[0114] Based on the above, in this application, a predicted charging protocol is determined based on the type of charging pile, and a target charging protocol is determined jointly based on the predicted charging protocol and the current charging protocol from the charging pile. This enables the actual charging protocol used in the current charging process to be determined through the verification process, thereby better realizing the charging process under the charging protocol.

[0115] The above-mentioned intelligent charging method will be explained in more detail below with examples of specific charging connection circuits. Figure 7 An example circuit diagram of a motor vehicle 200 according to an embodiment of the present disclosure is shown.

[0116] Specifically, Figure 7 For example, a motor vehicle 200 is shown, and the motor vehicle 200 has, for example, a charging connection circuit (such as...). Figure 7 (As shown by the dashed line in the diagram) and the charging pile type detection circuit.

[0117] Reference Figure 7The charging connection circuit 210 includes, for example, three charging branches arranged in parallel (each connected to a resistor with a different resistance value), a selection switch S2, and a connection status detection branch.

[0118] The three charging branches can be configured according to actual needs. Specifically, the first charging branch includes, for example, a resistor R4 with a resistance of 1.3KΩ, and corresponds to the CHAOJI or CHAdeMo 3.0 charging protocol, i.e., a CHAOJI or CHAdeMo 3.0 type charging station; the second charging branch includes, for example, a resistor R4C with a resistance of 130Ω, and corresponds to the CHAdeMo 2.0 charging protocol, i.e., a CHAdeMo 2.0 type charging station; the third charging branch includes, for example, a resistor R4C' with a resistance of 1KΩ, and corresponds to the GBT-DC-2015 charging protocol, i.e., a GBT-DC-2015 type charging station. It should be understood that resistors with different resistance values ​​can also be set according to actual needs.

[0119] The selector switch S2 can selectively activate one of the three charging branches. Specifically, as mentioned above, the selector switch S2 may have four positions: an idle position (no charging branch is activated), a first charging type position (e.g., the first charging branch is activated), a second charging type position (e.g., the second charging branch is activated), and a third charging type position (e.g., the third charging branch is activated).

[0120] Reference Figure 7 The connection status detection branch can be configured in parallel with the three charging branches, and the connection status detection branch includes a connection status detection switch S2' and a connection status detection resistor R4'. Depending on actual needs, the resistance value of the connection status detection resistor can be, for example, 2.74KΩ. The connection status detection switch S2' is configured to selectively close the connection status detection branch to acquire a connection status detection signal at the connection status detection node DP2 at the input of the charging connection circuit, and to perform connection status detection of the charging pile and the motor vehicle.

[0121] For example, a diode D1 can be provided at the input terminal of the charging connection circuit that is connected to the charging pile, or other components can be further provided according to actual needs.

[0122] The charging pile type detection circuit includes, for example, a constant voltage source U2 (e.g., a 12V DC voltage source), a charging pile type detection switch Sv (e.g., configured to selectively turn on the charging pile detection circuit), a charging pile type detection resistor RV (e.g., having a resistance value of 1KΩ), and a charging pile type detection node DP3. This charging pile type detection circuit connects the corresponding charging pile, a connector for connecting the charging pile to the motor vehicle, and related physical interface adapters, and identifies the type of the charging pile via a charging pile type detection signal acquired at the charging pile type detection node DP3. Specifically, when the charging pile detection switch Sv is closed, the constant voltage source U2 will provide a predetermined 12V voltage signal to the charging pile side (which may include the charging pile itself, connectors, and adapters, depending on the actual charging pile type and connection method). Because different types of charging piles have different internal resistances, the voltage received by the charging pile side will have different values. By acquiring the voltage value (i.e., the detection signal) received by the charging pile side in the charging pile type detection circuit, the type of charging pile can be determined based on this voltage value (detailed process is described in the appendix below). Figure 7 To be continued Figure 9 (As described).

[0123] The following section will describe in more detail the process of adapting motor vehicles to and charging them using different charging piles, based on the specific structure of the charging connection circuit and the charging pile type detection circuit described above.

[0124] For example, the motor vehicle 200 can be a CHAdeMo 3.0 type motor vehicle (and itself adapted to CHAdeMo 3.0 charging piles and the CHAdeMo 3.0 charging protocol). For example, a preset signal threshold (used to identify the charging pile type) is set as a voltage signal threshold and includes three sub-signal threshold points: 2V, 6V, and 8V. Wherein, 2V corresponds to a CHAdeMo 2.0 type charging pile, 6V corresponds to CHAdeMo 3.0 type charging piles, and 8V corresponds to a GBT-DC-2015 type charging pile.

[0125] In this scenario, when the vehicle connects to a CHAOJI-type charging station, the vehicle, for example, has a vehicle charging interface, and the vehicle is electrically connected to the CHAOJI super-type charging station through this interface. Specifically, since the physical interface terminals of the CHAOJI type and the CHAdeMo3.0 type are the same, the CHAOJI-type charging station only needs to be connected to the vehicle charging interface via a connector, eliminating the need for an additional adapter to convert the physical interface size.

[0126] Figure 7The diagram also illustrates the internal circuit structure and connector internal structure of a CHAOJI-type charging pile. Specifically, the charging pile side circuit includes a constant voltage source U1 (e.g., DC 12V), a charging pile switch S0 (normally closed during normal use), a charging pile resistor R1 (e.g., 1KΩ), an additional connection detection resistor R1' (e.g., 10KΩ) connected in series with the charging pile resistor, a connection detection switch S1 connected in parallel with the additional connection detection resistor R1' (this switch is open in the initial connection state and will perform corresponding actions during the connection status detection process between the vehicle and the charging pile), and a connection detection node DP1 (used to detect the connection status between the charging pile and the vehicle). The connector may include, for example, a normally closed connection switch S3 and a connection resistor R2 (100KΩ).

[0127] At this point, based on the aforementioned intelligent charging method for motor vehicles, the motor vehicle will first determine the type of charging pile via the charging pile type detection circuit, following the process in step S101. Specifically, the motor vehicle, for example, closes the charging pile type detection switch Sv to activate the charging pile type detection circuit, and connects to the CHAOJI type charging pile and related connector via the charging pile type detection circuit through the motor vehicle's charging interface. Here, it connects to the internal resistance Rc of the connector, and the resistance value of Rc is 1.0KΩ. At this time, the constant voltage source U2 provides a predetermined 12V voltage signal. This 12V voltage is applied to the series-connected charging pile type detection resistor RV and internal resistance Rc, and a detection signal can be obtained at the charging pile type detection node DP3 (here, the interface between the charging pile type detection circuit and the connector). This detection signal is a voltage signal, representing the voltage obtained by the charging pile side in the charging pile type detection circuit. Specifically, since the resistance values ​​of Rc and Rv are the same, the voltage signal obtained at the charging pile type detection node DP3 is 6V.

[0128] Subsequently, for example, the sub-signal threshold point corresponding to the voltage signal can be determined by comparing the voltage signal with a preset signal threshold, thereby identifying the charging pile as a CHAOJI and CHAdeMo 3.0 type charging pile.

[0129] Subsequently, for example, a connection status detection step between the vehicle and the charging station can be performed. Specifically, for example, the connection status detection switch S2' can be closed to activate the connection status detection branch. After the connection status detection switch S2' is closed, the charging station type detection switch Sv is opened, and the connection status of the charging station and the vehicle is detected. Specifically, according to the connection status detection process of the CHAOJI type charging station, the CHAOJI type charging station will monitor the current change on the DP1 node, identify the conduction of the connection status detection branch, perform a self-verification process of the connection status on the charging station side, and after confirming that the connection status on the charging station side is normal, the CHAOJI type charging station will close the connection detection switch S1. At this time, the connection status detection node DP2 set at the input end of the charging connection circuit detects the voltage change caused by the switch S1 from opening to closing (specifically, the voltage at node DP2 rises from about 5V to about 8V, for example), and obtains a connection status detection signal. The connection status detection signal includes, for example, the voltage value at node DP2 before switch S1 is closed and the voltage value at node DP2 after switch S1 is closed. The connection status detection signal is compared with a preset connection status standard signal. This connection status standard signal also includes, for example, the standard voltage value at node DP2 before switch S1 is closed and the standard voltage value at node DP2 after switch S1 is closed. If the connection status detection signal matches the preset connection status standard signal, the connection status is determined to be a normal connection status.

[0130] Subsequently, after confirming that the vehicle and the charging station are properly and securely connected, for example, based on the process of step S102 described above, the charging connection circuit of the vehicle is configured to match the charging station type. Specifically, while keeping switches S1 and S2' closed, the vehicle further controls the selection switch S2 to be in the first charging type position (conducting the first charging branch with resistor R4), so that the charging connection circuit of the vehicle is well adapted to the charging station type.

[0131] After configuring the charging connection circuit, for example, based on the type of the charging pile as described in step S103 above, the target charging protocol corresponding to the charging pile can be determined, and the vehicle can be charged based on the target charging protocol. Specifically, the type of charging pile determined at this time includes, for example, CHAOJI type and CHAdeMo 3.0 type. Therefore, the predicted charging protocol determined based on the type of charging pile includes: CHAOJI charging protocol and CHAdeMo 3.0 charging protocol. Subsequently, for example, communication is established with the charging pile via a communication cable, and communication information from the charging pile is received. This communication information includes the current charging protocol of the charging pile. For example, the communication information of a CHAOJI type charging pile includes a field specifying the current charging protocol as the CHAOJI charging protocol. The vehicle then determines the CHAOJI charging protocol in the predicted charging protocol as the target charging protocol based on the current charging protocol and performs charging via the charging connection circuit. It should be understood that during normal charging, switch Sv is open, and switches S0, S1, S2, and S2' are all in the closed state.

[0132] Figure 8 It shows Figure 7 The diagram shows a partial circuit diagram of the electrical connection between the motor vehicle 200 and a GBT-DC-2015 type charging station. Because the physical interface of the GBT-DC-2015 type (hereinafter referred to as "GBT type") charging station is different from that of the CHAdeMo3.0 (or CHAOJI) type, the GBT-DC-2015 type charging station will be connected to the motor vehicle's charging interface via a GBT-DC-2015 connector and adapter (for physical interface conversion).

[0133] Figure 8 The document also illustrates the internal circuit structure of the GBT-DC-2015 charging pile and the internal circuit structure of the GBT-DC-2015 connector. The GBT-DC-2015 charging pile includes a constant voltage source U1 (e.g., DC 12V), a charging pile resistor R1 (e.g., 1KΩ), and a connection detection node DP1 (used to detect the connection status between the charging pile and the vehicle). The internal circuit structure of the GBT-DC-2015 connector includes a normally closed connection switch S and a connection resistor R2 (here, the resistance of resistor R2 is 1KΩ).

[0134] At this point, based on the aforementioned intelligent charging method for motor vehicles, the motor vehicle will first determine the type of charging pile through the charging pile type detection circuit, based on the aforementioned step S101. Specifically, the motor vehicle, for example, closes the charging pile type detection switch Sv to activate the charging pile type detection circuit, and connects to the GBT-DC-2015 type charging pile and related connectors and adapters via the charging pile type detection circuit through the motor vehicle's charging interface. Here, for example, the internal resistance R3 (resistance value 1.0KΩ) of the GBT-DC-2015 connector, the first internal resistance RC' (resistance value 1.0KΩ, connected in parallel with the internal resistance R3) of the adapter, and the second internal resistance RC' (resistance value 1.5KΩ) of the adapter are connected. Furthermore, the first internal resistance RC' of the adapter and the internal resistance of the GBT-DC-2015 connector are connected in parallel. Resistor R3 is connected in parallel. At this time, a detection signal can be obtained at the charging pile type detection node DP3 (here, the interface between the charging pile type detection circuit and the connector) of the charging pile type detection circuit. This is a voltage signal, representing the voltage obtained by the charging pile side in the charging pile type detection circuit. Specifically, based on the relationship between the internal resistances R3, RC', and RC" of the charging pile side and the resistance value of the charging pile type detection resistor RV, the voltage signal obtained at the charging pile type detection node DP3 is 8V. Based on the aforementioned preset signal threshold, the type of the charging pile can be determined to be GBT-DC-2015.

[0135] Subsequently, for example, based on the aforementioned step S102, the charging connection circuit of the motor vehicle is configured to match the charging pile type. Here, for example, based on the GBT-DC-2015 type, the selection switch S2 is controlled to be in the third charging type position (conducting the third charging branch with resistor R4C') so that the charging connection circuit of the motor vehicle is well adapted to the charging pile type.

[0136] Subsequently, a process for detecting the connection status of the charging pile and the motor vehicle can be performed, for example. Specifically, for example, the voltage at node DP1 at the charging pile end can be detected to determine the connection status on the charging pile side; and the voltage at node DP2 at the motor vehicle side can be detected to determine the connection status between the motor vehicle and the charging pile. For example, when the connection status detection signal (voltage signal) at node DP2 is consistent with a preset connection status standard signal, the connection status is determined to be a normal connection status.

[0137] Subsequently, for example, based on the aforementioned step S103, the target charging protocol corresponding to the charging pile can be determined based on the type of the charging pile, and the vehicle can be charged based on the target charging protocol. The relevant processing flow is as described above and will not be repeated here. During the charging process, the vehicle-side switches Sv and S2' are open, and switch S2 is closed.

[0138] Figure 9 It shows Figure 7 The diagram shows a partial circuit diagram of the electrical connection between motor vehicle 200 and a CHAdeMo 2.0 type charging station. Similar to GBT-DC-2015 type charging stations, the physical interface of the CHAdeMo 2.0 type charging station differs from that of the CHAdeMo 3.0 (or CHAOJI) type. Therefore, a CHAdeMo 2.0 connector and adapter (for physical interface conversion) are required to connect to the motor vehicle's charging interface.

[0139] And in Figure 9 The internal circuit structure of the CHAdeMo 2.0 charging pile connected to this charging connection circuit is also shown. The GBT-DC-2015 charging pile includes a constant voltage source U1 (e.g., a DC 12V voltage) and a charging pile resistor R1 (e.g., 1KΩ).

[0140] At this point, based on the aforementioned intelligent charging method for motor vehicles, the motor vehicle will first determine the type of charging station via the charging station type detection circuit, following the process in step S101. Specifically, the motor vehicle, for example, closes the charging station type detection switch Sv to activate the charging station type detection circuit, and connects to the CHAdeMo 2.0 type charging station and related connectors and adapters via the charging station type detection circuit through the motor vehicle's charging interface. Specifically, it has the following features: Figure 9 The structure described above, for example, includes an additional connection detection resistor R1' (resistance value, for example, 200Ω) connected to the CHAdeMo 2.0 charging pile, a first switch d1, and a second switch d2, wherein the second switch d2 is connected in parallel with the additional connection detection resistor R1'; the charging pile type detection circuit is also connected to the adapter's first internal resistance Rc' (resistance value, for example, 200Ω), second internal resistance Rc' (resistance value, for example, 100Ω), and third internal resistance Rd (resistance value, for example, 400Ω). In this case, a charging pile type detection signal can be obtained at the charging pile type detection node DP3 (here, the interface between the charging pile type detection circuit and the connector). This charging pile type detection signal is a voltage signal; specifically, the voltage signal obtained at the charging pile type detection node DP3 is 2V. Based on the aforementioned preset signal threshold, the charging pile type can be determined to be of type CHAdeMo 2.0.

[0141] Subsequently, for example, based on the aforementioned step S102, the charging connection circuit of the motor vehicle is configured to match the charging pile type. Here, for example, based on the CHAdeMo2.0 type, the selection switch S2 is controlled to be in the second charging type position (conducting the second charging branch with resistor R4C) so that the charging connection circuit of the motor vehicle is well adapted to the charging pile type.

[0142] After configuring this charging connection circuit, for example, a step can be performed to detect the connection status between the vehicle and the charging station. Specifically, for example, if the voltage at node DP1 on the charging station side is detected to be 10V, it can be determined that the connection status on the charging station side is a normal connection status; for example, if the voltage at node DP2 on the vehicle side is detected to be 2V, it can be determined that the connection status between the vehicle and the charging station is a normal connection status.

[0143] Subsequently, for example, based on the aforementioned step S103, the target charging protocol corresponding to the charging pile can be determined based on the type of the charging pile, and the vehicle can be charged based on the target charging protocol. The relevant processing flow is as described above and will not be repeated here. Furthermore, during the charging process between the charging pile and the vehicle, according to the standard charging process of a CHAdeMo 2.0 type charging pile, the charging pile can, for example, first close the first switch d1 (corresponding to pressing the charging pile start switch), and the first switch will remain closed until charging is completed. After the first switch d1 is closed, the charging pile and the vehicle, for example, undergo an insulation detection process; after the insulation detection is completed, the vehicle closes the relevant relay, and the charging pile closes the second switch d2. Therefore, during normal charging, the vehicle-side switches Sv and S2' are open, switch S2 is closed, and both the first switch d1 and the second switch d2 in the charging pile are closed.

[0144] Based on the above, the charging connection circuit and charging pile type detection circuit are designed to enable good adaptation to various types of charging piles and to ensure a smooth charging process.

[0145] According to another aspect of this disclosure, a motor vehicle 200 is proposed. Figure 10 An exemplary block diagram of a motor vehicle 200 according to an embodiment of the present disclosure is shown.

[0146] Reference Figure 10 The motor vehicle 200 includes a charging connection circuit 210, a charging pile type detection circuit 220, and a controller 230. The motor vehicle 200 is electrically connected to the charging pile 300 via the charging connection circuit 210.

[0147] The charging connection circuit 210 refers to a circuit used to adapt to different types of charging piles to realize the charging process of the motor vehicle via the charging pile. For example, one end of the charging connection circuit is connected to the motor vehicle and the other end is connected to the charging pile.

[0148] The charging connection circuit can be integrated into the internal circuitry of the vehicle, for example, it can be integrated into the charging port of the vehicle as needed. It should be understood that the embodiments of this disclosure are not limited to the specific arrangement and integration method of the charging connection circuit within the vehicle.

[0149] The charging pile type detection circuit 220 refers to a circuit used to detect the type of the charging pile. It should be understood that, depending on actual needs, the charging pile type detection circuit may include, for example, a constant voltage source and a charging pile type detection node.

[0150] The controller refers to a device used to control the charging process of the motor vehicle. This controller may be, for example, a central control unit, or a separate control unit used solely for charging control. Embodiments of this disclosure are not limited to the type or specific composition of the controller.

[0151] The controller communicates with the charging pile type detection circuit and is configured to: identify the type of the charging pile based on the detection signal received from the charging pile type detection circuit; configure the charging connection circuit of the motor vehicle to match the charging pile based on the type of the charging pile; determine the target charging protocol corresponding to the charging pile based on the type of the charging pile; and charge the motor vehicle based on the target charging protocol.

[0152] The signal associated with the charging station refers to a signal that reflects the type of the charging station, which may be, for example, a voltage signal or a current signal. Embodiments of this disclosure are not limited to the specific type of signal.

[0153] It should be understood that, depending on actual needs, the type of charging pile may include, for example, CHAdeMo 2.0, GBT-DC-2015, CHAOJI, CHAdeMo 3.0, etc.

[0154] The process of configuring the charging connection circuit of the motor vehicle to match the charging pile refers to configuring the circuit components (e.g., resistors) or circuit structure (e.g., disconnecting or connecting one or more branches in the circuit) of the charging connection circuit so that the configured charging connection circuit can match the identified charging pile. Here, matching means that the configured charging connection circuit meets the current and / or voltage requirements of the charging protocol corresponding to the charging pile. For example, the current value flowing through the charging connection circuit or the input voltage value of the input terminal of the charging connection circuit connected to the charging pile is within the normal operating current or voltage range of the charging pile.

[0155] The target charging protocol refers to the charging protocol used during the charging process between the charging station and the motor vehicle.

[0156] For example, depending on actual needs, the target charging protocol corresponding to the charging pile can be determined by the following method: For example, on the vehicle side, based on the type of the charging pile, one or more predicted charging protocols corresponding to the charging pile are determined; then, communication information from the charging pile is received, wherein the communication information includes the current charging protocol of the charging pile; and if at least one of the one or more predicted charging protocols is consistent with the current charging protocol, the current charging protocol is determined as the target charging protocol.

[0157] Based on the above, this application, by setting up a motor vehicle including a charging connection circuit, a charging pile type detection circuit, and a controller, and configuring the controller to identify the type of charging pile, configures the charging connection circuit based on the type of charging pile, and determines the target charging protocol, enables the vehicle to autonomously identify different charging piles and intelligently adapt to the corresponding charging piles. Compared to the current method of adding an additional charging adapter device outside the vehicle, the charging connection circuit in this application can be easily and conveniently integrated into the motor vehicle, thereby realizing the integrated control design of the motor vehicle. Compared to the method of setting a charging adapter device on the charging pile side for adaptation, the method in this application enables the motor vehicle to autonomously and intelligently adapt to multiple different types of charging piles, thereby flexibly charging based on multiple charging protocols. In addition, compared to the process of adaptation based on manual selection by the user, the identification and adaptation process in this application is automated, requiring no human intervention, with high reliability and accuracy, and improving the human-machine interaction experience.

[0158] In some embodiments, such as with reference to the foregoing appendix Figure 7 An example of a charging connection circuit described in detail is provided, the charging connection circuit including: a selection switch and multiple charging branches.

[0159] The selector switch is a switching component used to selectively engage one of the charging branches in the charging branch. Embodiments of this disclosure are not limited to the specific composition of the selector switch. The charging connection branch refers to a circuit branch in the charging connection circuit that can be selectively turned on. Each of the plurality of charging branches has a resistor with a different resistance value.

[0160] The plurality of charging branches are arranged in parallel, for example, and each charging branch corresponds to a type of charging station, that is, when one charging branch is turned on and the other charging branches are turned off, the charging connection circuit can be well adapted to the type of charging station corresponding to that charging branch. It should be understood that the embodiments of this disclosure are not limited to the specific number and specific composition of the charging branches.

[0161] The controller is configured to control the selection switch based on the type of the charging pile, so as to activate the charging branch among the plurality of charging branches that corresponds to the type of the charging pile.

[0162] Based on the above, in this application, by setting the charging connection circuit to include multiple charging branches and a selection switch, and configuring the controller to control the selection switch to conduct the charging branch corresponding to the type of charging pile based on the type of charging pile, the charging connection circuit can be adjusted in a simple and convenient way, realizing rapid adaptation to different types of charging piles, and making the circuit structure of the charging connection circuit simple, which is conducive to reducing manufacturing costs.

[0163] In some embodiments, the controller is further configured to perform the step of detecting the connection status of the motor vehicle with the charging station.

[0164] The connection status refers to the status parameters that reflect the connection between the motor vehicle and the charging pile (e.g., whether the motor vehicle is correctly and securely electrically connected to the charging pile).

[0165] The step of detecting the connection status of the charging pile can be implemented, for example, by an additional status detection circuit, or it can be implemented via the connection status detection branch and related connection status detection nodes in the charging connection circuit.

[0166] It should be understood that, depending on the specific type of charging station connected, the step of detecting the connection status between the motor vehicle and the charging station may be performed, for example, after configuring the charging connection circuit of the motor vehicle to match the charging station, or it may be performed during the process of configuring the charging connection circuit of the motor vehicle to match the charging station.

[0167] It should be understood that the step of detecting the connection status between the motor vehicle and the charging station is performed before charging the motor vehicle based on the target charging protocol.

[0168] Based on the above, this application detects the connection status between the motor vehicle and the charging pile, ensuring that the motor vehicle and the charging pile are in a stable and correct electrical connection state before charging the motor vehicle based on the target charging protocol. This avoids invalid or inefficient charging caused by incorrect electrical connection, and also avoids damage to the motor vehicle's own circuitry or related electronic components during charging due to incorrect connection methods.

[0169] In some embodiments, the charging connection status is detected, for example, via a connection status detection node in the charging connection circuit.

[0170] It should be understood that, based on actual needs, the connection status detection node can be set at the input end of the charging connection circuit (the end connected to the charging pile), and the embodiments of this disclosure are not limited to the specific setting method of the connection status detection node.

[0171] Furthermore, the step of detecting the connection status between the vehicle and the charging station includes: firstly, acquiring a connection status detection signal from a connection status detection node in the charging connection circuit. The connection status detection signal can be, for example, a voltage signal or a current signal. Embodiments of this disclosure are not limited to the specific type of connection status detection signal.

[0172] It should be understood that the connection status detection node can be detected over a period of time to obtain the change curve of the connection status detection signal at the connection status detection node, or the connection status detection node can be detected after the charging pile or motor vehicle performs a specific action. The embodiments of this disclosure are not limited to the specific detection method of the connection status detection node.

[0173] Secondly, the connection status detection signal is compared with the preset connection status standard signal, and the connection status between the vehicle and the charging pile is determined based on the comparison result.

[0174] The preset connection status standard signal refers to the signal value that the connection status detection node should have under normal and stable connection conditions. The embodiments of this disclosure are not limited to the specific signal value of this connection status standard signal.

[0175] It should be understood that, depending on actual needs, the standard connection status signal may be, for example, the signal change curve that the connection status detection node should have over a period of time, or it may be the signal value that the connection status detection node should present after the motor vehicle or charging pile performs a specific action.

[0176] The process of determining the connection status between a motor vehicle and a charging station based on the comparison results can be, for example, as follows: the connection status is determined to be a normal connection status only if the connection status detection signal is consistent with the preset connection status standard signal.

[0177] Based on the above, in this application, during the process of detecting the charging connection status, a connection status detection signal is obtained from the connection status detection node in the charging connection circuit and compared with a preset connection status standard signal to determine the connection status between the vehicle and the charging pile. On the one hand, the charging connection circuit is reused for the charging connection status detection, which simplifies the circuit structure; on the other hand, by collecting the connection status detection signal and comparing it with the preset connection status standard signal, the detection of the connection status can be achieved accurately and reliably.

[0178] In some embodiments, the connection status detection signal is compared with a preset connection status standard signal, and the connection status between the motor vehicle and the charging pile is determined based on the comparison result, including: if the connection status detection signal is consistent with the preset connection status standard signal, the connection status is determined to be a normal connection status; if the connection status detection signal is inconsistent with the preset connection status standard signal, the connection status is determined to be an abnormal connection status.

[0179] Based on the above, by determining the connection status as a normal connection status when the connection status detection signal is consistent with the preset connection status standard signal, it is possible to effectively distinguish the connection status of the vehicle and the charging pile, which is beneficial for executing the subsequent charging process or issuing an alarm based on the judgment result.

[0180] In some embodiments, refer to Figure 5 In the case that the charging pile type is CHAOJI type or CHAdeMo 3.0 type, in order to achieve good connection status detection, the charging connection circuit also includes a connection status detection branch.

[0181] The connection status detection branch refers to a circuit branch used to detect the connection status, and this charging detection branch is, for example, connected in parallel with the charging branch. Depending on actual needs, the charging detection branch may include a resistor or other electrical components to achieve connection status detection.

[0182] Furthermore, the controller is configured to selectively activate the connection status detection branch according to the type of the charging pile, so as to detect the connection status between the motor vehicle and the charging pile.

[0183] For example, in such Figure 5In the circuit shown, when the charging pile is of type CHAOJI or CHAdeMo3.0, the controller can close the connection status detection switch S2' to turn on the connection status detection branch 214 connected in parallel with the charging branch. When the connection status detection circuit 214 is turned on, the charging pile electrically connected to the charging connection circuit can detect the corresponding change in current or voltage, thereby starting the connection status detection process, for example, by configuring the circuit components or circuit structure on the charging pile side accordingly.

[0184] Furthermore, the process of detecting the connection status between the vehicle and the charging station may further include, for example, acquiring a connection status detection signal from a connection status detection node in the charging connection circuit; comparing the connection status detection signal with a preset connection status standard signal; and determining the connection status between the vehicle and the charging station based on the comparison result. The relevant processes have been described in detail above and will not be repeated here.

[0185] In some embodiments, the charging pile type detection circuit includes: a constant voltage source and a charging pile type detection node.

[0186] The constant voltage source is used to provide a predetermined voltage signal to the charging pile. For example, it can provide a 12V DC power signal or a 24V DC power signal. The embodiments of this disclosure are not limited to the specific voltage signal value provided by the constant voltage source.

[0187] The charging pile type detection node is configured to provide a detection signal indicating the type of the charging pile in response to a predetermined voltage signal supplied by the constant voltage source to the charging pile. Specifically, Figure 7 An example of a charging pile type detection circuit is shown in the figure, and the process of acquiring the detection signal is described in detail, which will not be repeated here.

[0188] The controller is connected to the charging pile type detection node and receives the detection signal to determine the type of the charging pile.

[0189] The process of determining the type of charging station is, for example, by comparing the detection signal with a preset signal threshold, and determining the type of charging station based on the comparison result. Specifically, refer to the foregoing Figure 3 The preset signal threshold includes multiple different sub-threshold ranges, each sub-threshold range corresponding to a charging pile type; and comparing the detection signal with the preset signal threshold to determine the type of the charging pile based on the comparison result includes: determining the sub-threshold range corresponding to the detection signal; and determining the charging pile type corresponding to the detection signal based on the sub-threshold range.

[0190] By setting the charging pile type detection circuit to include a constant voltage source and a charging pile type detection node, and acquiring the detection signal based on the charging pile type detection node, the subsequent controller determines the type of charging pile based on the detection signal. This enables the confirmation of the charging pile type in a simple and convenient way, which is beneficial for the subsequent configuration of the charging connection circuit and the determination of the target charging protocol based on the charging pile type.

[0191] In some embodiments, the controller is further configured to: determine one or more predictive charging protocols corresponding to the charging pile based on the type of the charging pile; receive communication information from the charging pile, wherein the communication information includes the current charging protocol of the charging pile; and determine the current charging protocol as the target charging protocol if at least one of the one or more predictive charging protocols is consistent with the current charging protocol.

[0192] Based on the above, in this application, a predicted charging protocol is determined based on the type of charging pile, and a target charging protocol is determined jointly based on the predicted charging protocol and the current charging protocol from the charging pile. This enables the actual charging protocol used in the current charging process to be determined through the verification process, thereby better realizing the charging process under the charging protocol.

[0193] In some embodiments, the vehicle further includes an adapter, wherein the charging station is connected to the vehicle via the adapter.

[0194] The adapter refers to an intermediate conversion element used to achieve physical interface adaptation. By including the adapter in the vehicle, the vehicle can be well adapted to various types of charging piles with different physical interfaces, thereby improving the vehicle's compatibility with charging piles.

[0195] In some embodiments, the adapter in the motor vehicle is further configured to perform the smart charging method for the motor vehicle as described above, and has the functions as described above.

[0196] This application uses specific terms to describe embodiments of the application. Terms such as "first / second embodiment," "an embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that references to "an embodiment," "one embodiment," or "an alternative embodiment" in different locations throughout this specification do not necessarily refer to the same embodiment. Furthermore, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0197] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in a common dictionary shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0198] The foregoing description is illustrative of the invention and should not be construed as limiting it. Although several exemplary embodiments of the invention have been described, those skilled in the art will readily understand that many modifications can be made to the exemplary embodiments without departing from the novel teachings and advantages of the invention. Therefore, all such modifications are intended to be included within the scope of the invention as defined in the claims. It should be understood that the foregoing description is illustrative of the invention and should not be construed as limiting it to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the appended claims. The invention is defined by the claims and their equivalents.

Claims

1. A smart charging method for motor vehicles, wherein, The motor vehicle is electrically connected to the charging pile via a charging connection circuit, and the method includes: Identify the type of the charging station; Based on the type of the charging pile, configure the charging connection circuit of the motor vehicle to match the charging pile; Based on the type of the charging station, the target charging protocol corresponding to the charging station is determined, and the vehicle is charged through the configured charging connection circuit based on the target charging protocol. Identifying the type of the charging station includes: A predetermined voltage signal is applied to the charging pile through a charging pile type detection circuit, and in response to the voltage signal, a detection signal associated with the charging pile is acquired. The charging pile type detection circuit is electrically connected to the charging pile. The detected signal is compared with a preset signal threshold, and the type of the charging pile is determined based on the comparison result. The preset signal threshold includes multiple different sub-threshold ranges, and each sub-threshold range corresponds to a charging pile type. Furthermore, the detected signal is compared with a preset signal threshold, and the type of the charging pile is determined based on the comparison result, including: Determine the sub-threshold range corresponding to the detection signal; Based on this sub-threshold range, the type of charging station corresponding to the detected signal is determined. Determining the target charging protocol corresponding to the charging pile includes: Based on the type of the charging pile, determine multiple predicted charging protocols corresponding to the charging pile; receive communication information from the charging pile, wherein the communication information includes the current charging protocol of the charging pile; If at least one of the plurality of predicted charging protocols is consistent with the current charging protocol, the current charging protocol is determined as the target charging protocol.

2. The intelligent charging method according to claim 1, wherein, The types of charging piles include at least one of: CHAdeMo 2.0, GBT-DC-2015, CHAOJI, and CHAdeMo 3.

0.

3. The intelligent charging method according to claim 1, wherein, The charging connection circuit includes multiple charging branches. Furthermore, configuring the charging connection circuit of the motor vehicle based on the type of the charging pile to match the charging pile includes: Based on the type of the charging pile, a control selection switch is used to activate the charging branch corresponding to the type of the charging pile.

4. The intelligent charging method according to claim 3, wherein, Each charging branch has a resistor with a different resistance value.

5. The intelligent charging method according to claim 3 or 4, wherein, The method also includes the step of detecting the connection status of the motor vehicle with the charging station.

6. The intelligent charging method according to claim 5, wherein, The steps for detecting the connection status of the vehicle to the charging station include: Obtain the connection status detection signal from the connection status detection node in the charging connection circuit; The connection status detection signal is compared with a preset connection status standard signal, and the connection status between the vehicle and the charging pile is determined based on the comparison result.

7. The intelligent charging method according to claim 6, wherein, The connection status detection signal is compared with a preset connection status standard signal, and the connection status between the vehicle and the charging station is determined based on the comparison result, including: If the connection status detection signal is consistent with the preset connection status standard signal, the connection status is determined to be a normal connection status. If the connection status detection signal is inconsistent with the preset connection status standard signal, the connection status will be determined as an abnormal connection status.

8. The intelligent charging method according to claim 5, wherein, When the charging station type is CHAOJI or CHAdeMo 3.0, the steps for detecting the connection status between the vehicle and the charging station include: Connect the connection status detection branch that is connected in parallel with the charging branch; Obtain the connection status detection signal from the connection status detection node in the charging connection circuit; The connection status detection signal is compared with a preset connection status standard signal, and the connection status between the vehicle and the charging pile is determined based on the comparison result.

9. A motor vehicle that applies the intelligent charging method of claim 1, the motor vehicle comprising: A charging connection circuit, through which the motor vehicle is electrically connected to a charging pile; Charging pile type detection circuit; The controller communicates with the charging pile type detection circuit and is configured to: The type of the charging pile is identified based on the detection signal received from the charging pile type detection circuit; Based on the type of the charging pile, configure the charging connection circuit of the motor vehicle to match the charging pile; Based on the type of the charging pile, the target charging protocol corresponding to the charging pile is determined, and the motor vehicle is charged based on the target charging protocol.

10. The motor vehicle according to claim 9, wherein, The charging connection circuit includes: Select switch; and Multiple charging branches, each with a resistor of different resistance value; The controller is configured to control the selection switch based on the type of the charging pile to enable the charging station. The charging branch that corresponds to the type of the charging pile among multiple charging branches.

11. The motor vehicle according to claim 9, wherein, The charging connection circuit further includes a connection status detection branch connected in parallel with the charging branch. The controller is configured to selectively activate the connection status detection based on the type of the charging pile. A branch line is used to detect the connection status between the vehicle and the charging station.

12. The motor vehicle according to claim 9, wherein, The charging pile type detection circuit includes: A constant voltage source is used to provide a predetermined voltage signal to the charging pile; The charging pile type detection node, in response to a predetermined voltage signal supplied by the constant voltage source to the charging pile, provides a detection signal indicating the type of the charging pile. The controller is connected to the charging pile type detection node and receives the detection signal to determine the type of the charging pile.

13. The motor vehicle according to claim 9, wherein, It also includes an adapter, and among which, The charging station is connected to the vehicle via an adapter.

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