Charging control method, charging system, controller and vehicle

Abstract

The invention relates to a charging control method, a charging system, a controller and a vehicle, and relates to the technical field of vehicles, and the method comprises the following steps: obtaining a currently set charging mode of a charging circuit; and obtaining the charging states of the first charging port and the second charging port, wherein the charging states represent the interaction state between the charging ports and the charging pile. And controlling the switch assembly according to the currently set charging mode and the charging state so as to switch the charging mode. The charging mode is switched according to the currently set charging mode of the charging circuit and the charging state of the charging port, the charging mode adaptive to the charging state of the charging port can be switched under the condition that the charging state of the charging port is not matched with the currently set charging mode, and the flexibility and smoothness of switching the charging mode are improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicles, and in particular, to a charging control method, a charging system, a controller, and a vehicle. Background Art

[0002] With the rapid development of electric vehicles in the automotive industry, the charging speed and driving range of electric vehicles have attracted more and more attention from users. A charging system that uses a high-voltage battery pack above 500V and combines dual-gun charging is an effective solution to improve the charging speed and driving range of electric vehicles. At present, DC charging piles in the domestic market are mainly divided into low-voltage charging piles below 500V and high-voltage charging piles above 500V. Therefore, the charging system of electric vehicles using high-voltage battery packs needs to be compatible with DC charging piles with different output voltage ranges to meet market and user requirements. In related technologies, it is easy to fail to switch between the single-gun charging mode and the dual-gun charging mode in the dual-gun charging system, resulting in the interruption of the charging process, and the charging circuit cannot be smoothly and flexibly switched. Summary of the Invention

[0003] The purpose of the present disclosure is to provide a charging control method, a charging system, a controller, and a vehicle, which are used to improve the flexibility and smoothness of switching charging modes.

[0004] According to a first aspect of an embodiment of the present disclosure, a charging control method is provided, and the method includes:

[0005] Obtain the currently set charging mode;

[0006] Obtain the charging states of a first charging port and a second charging port, where the charging state represents the interaction state between the charging port and the charging pile;

[0007] Control a switch assembly according to the currently set charging mode and the charging state to switch the charging mode.

[0008] Optionally, the controlling the switch assembly according to the currently set charging mode and the charging state to switch the charging mode includes:

[0009] Determine a target charging mode according to the currently set charging mode and the charging state;

[0010] Control the switch assembly according to the target charging mode to switch the currently set charging mode to the target charging mode.

[0011] Optionally, the determining the target charging mode according to the currently set charging mode and the charging state includes:

[0012] When the currently set charging mode indicates charging through the first target charging port, and the charging status indicates that the charging handshake confirmation has been completed between the candidate charging port and the candidate charging pile, obtain the maximum output voltage of the candidate charging pile; the first target charging port includes the first charging port or the second charging port, the candidate charging port includes the charging ports other than the first target charging port among the first charging port and the second charging port, and the candidate charging pile includes the charging pile connected to the candidate charging port;

[0013] Determine the target charging mode according to the maximum output voltage of the candidate charging pile and the currently set charging mode.

[0014] Optionally, the determining the target charging mode according to the maximum output voltage of the candidate charging pile and the currently set charging mode includes:

[0015] When the first preset condition is satisfied, determine the target charging mode as the first dual-gun mode;

[0016] Wherein, the first preset condition includes: the maximum output voltage is greater than or equal to the battery voltage of the power battery, and the currently set charging mode includes: charging the power battery through the first target charging port;

[0017] The first dual-gun mode includes: charging the power battery through the first charging port and charging the power battery through the second charging port.

[0018] Optionally, the determining the target charging mode according to the maximum output voltage of the candidate charging pile and the currently set charging mode includes:

[0019] When the second preset condition is satisfied, determine the target charging mode as the second dual-gun mode;

[0020] Wherein, the second preset condition includes:

[0021] The maximum output voltage is greater than or equal to the battery voltage of the power battery; and

[0022] The currently set charging mode includes: charging the first battery pack and the second battery pack in parallel through the first target charging port; or charging the power battery after boosting the current of the first target charging port;

[0023] The second dual-gun mode includes: charging the first battery pack through the first charging port and charging the second battery pack through the second charging port, wherein the power battery includes the first battery pack and the second battery pack, and the first battery pack and the second battery pack are in series.

[0024] Optionally, determining the target charging mode according to the maximum output voltage of the candidate charging pile and the currently set charging mode includes:

[0025] In the case where the maximum output voltage is less than the battery voltage of the power battery, determining the target charging mode as the second dual-gun mode.

[0026] Optionally, determining the target charging mode according to the currently set charging mode and the charging state includes:

[0027] When the currently set charging mode indicates charging through both the first charging port and the second charging port, and the charging state indicates that the charging pile is not charging through the second target charging port, obtaining the maximum output voltage of the target charging pile; the second target charging port includes the first charging port or the second charging port, and the target charging pile includes the charging pile corresponding to the charging port other than the second target charging port among the first charging port and the second charging port;

[0028] Determining the target charging mode according to the maximum output voltage of the target charging pile.

[0029] Optionally, determining the target charging mode according to the maximum output voltage of the target charging pile includes:

[0030] In the case where a fourth preset condition is satisfied, determining the target charging mode as the first single-gun mode;

[0031] The fourth preset condition includes: the maximum output voltage of the first charging pile connected to the first charging port is greater than or equal to the battery voltage of the power battery; the second target charging port is the second charging port;

[0032] The first single-gun mode includes: charging the power battery through the first charging port.

[0033] Optionally, determining the target charging mode according to the maximum output voltage of the target charging pile includes:

[0034] In the case where a fifth preset condition is satisfied, determining the target charging mode as the second single-gun mode;

[0035] The fifth preset condition includes: the maximum output voltage of the first charging pile connected to the first charging port is less than the battery voltage of the power battery; the second target charging port is the second charging port;

[0036] The second single-gun mode includes: charging the power battery after boosting the current of the first charging port.

[0037] Optionally, determining the target charging mode according to the maximum output voltage of the target charging pile includes:

[0038] When a sixth preset condition is satisfied, determining the target charging mode as a third single-gun mode;

[0039] The sixth preset condition includes: the maximum output voltage of the second charging pile connected to the second charging port is greater than or equal to the battery voltage of the power battery; the second target charging port is the first charging port;

[0040] The third single-gun mode includes: charging the power battery through the second charging port.

[0041] Optionally, determining the target charging mode according to the maximum output voltage of the target charging pile includes:

[0042] When a seventh preset condition is satisfied, determining the target charging mode as a fourth single-gun mode;

[0043] The seventh preset condition includes: the maximum output voltage of the second charging pile connected to the second charging port is less than the battery voltage of the power battery; the second target charging port is the first charging port;

[0044] The fourth single-gun mode includes: charging the first battery pack and the second battery pack in parallel through the second charging port, where the power battery includes a first battery pack and a second battery pack, and the first battery pack and the second battery pack are connected in series.

[0045] According to a second aspect of the embodiments of the present disclosure, a charging system is provided. The charging system includes: a charging circuit and a controller, the charging circuit is connected to the controller; the charging circuit includes: a first charging port, a second charging port, a power battery, and a switch assembly, the first charging port and the second charging port are respectively connected to the power battery through the switch assembly; the controller is configured to:

[0046] Determine a target charging port connected to a charging gun from the first charging port and the second charging port;

[0047] Determine a target charging mode from multiple preset charging modes according to the charging capacity information of the target charging pile and the target charging port; where the target charging pile is a charging pile connected to the target charging port through the charging gun;

[0048] Control the switch assembly according to the target charging mode to charge the power battery.

[0049] Optionally, the switch assembly includes a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, and a transistor assembly; the power battery includes a first battery pack, a second battery pack, and a seventh switch;

[0050] A first end of the first switch is connected to a first end of the first charging port, and a second end of the first switch is connected to a first end of the transistor assembly; a first end of the second switch is connected to a second end of the first charging port, and a second end of the second switch is connected to a second end of the transistor assembly; a third end of the transistor assembly is connected to a first end of the first battery pack, a second end of the first battery pack is connected to a first end of the seventh switch, a second end of the seventh switch is connected to a first end of the second battery pack, and a second end of the second battery pack is connected to a fourth end of the transistor assembly; a first end of the third switch is connected to the first end of the transistor assembly, and a second end of the third switch is connected to the first end of the second battery pack;

[0051] A first end of the fourth switch is connected to a first end of the second charging port, and a second end of the fourth switch is connected to a first end of the first battery pack; a first end of the fifth switch is connected to a second end of the second charging port, and a second end of the fifth switch is connected to a second end of the second battery pack; a first end of the sixth switch is connected to a second end of the first battery pack, and a second end of the sixth switch is connected to a second end of the second battery pack.

[0052] Optionally, the transistor assembly includes: a first transistor assembly, a second transistor assembly, an inductor assembly, a first capacitor, and a second capacitor;

[0053] The second end of the first switch is connected to the first end of the inductor assembly, the second end of the inductor assembly is connected to the first end of the first transistor assembly, and the second end of the first transistor assembly is connected to the first end of the first battery pack; the second end of the inductor assembly is further connected to the first end of the second transistor assembly, and the second end of the second transistor assembly is connected to the second end of the second battery pack;

[0054] A first end of the first capacitor is connected to the second end of the first transistor assembly, and a second end of the first capacitor is connected to the second end of the second transistor assembly; a first end of the second capacitor is connected to the first end of the inductor assembly, and a second end of the second capacitor is connected to the second end of the second transistor assembly.

[0055] According to a third aspect of the embodiments of the present disclosure, a controller is provided, including:

[0056] A memory having a computer program stored thereon;

[0057] A processor for executing the computer program in the memory to implement the steps of the method according to the first aspect of the embodiments of the present disclosure.

[0058] According to a fourth aspect of the embodiments of the present disclosure, a vehicle is provided, which includes the controller according to the third aspect of the embodiments of the present disclosure.

[0059] According to a fifth aspect of the embodiments of the present disclosure, a vehicle is provided, which includes the charging system according to the second aspect of the embodiments of the present disclosure.

[0060] Through the above technical solutions, the present disclosure obtains the currently set charging mode and the charging states of the first charging port and the second charging port, where the charging state represents the interaction state between the charging port and the charging pile, and then controls the switch assembly according to the currently set charging mode and the charging state to switch the charging mode. The present disclosure switches the charging mode according to the currently set charging mode of the charging circuit and the charging state of the charging port, and can switch to a charging mode adapted to the charging state of the charging port when the charging state of the charging port does not match the currently set charging mode, improving the flexibility and smoothness of switching the charging mode.

[0061] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. They are used together with the following specific implementation to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:

[0063] Figure 1 is a block diagram of a dual-gun charging system shown according to an exemplary embodiment;

[0064] Figure 2 is a flowchart of a charging control method shown according to an exemplary embodiment;

[0065] Figure 3 is a flowchart of another charging control method shown according to an exemplary embodiment;

[0066] Figure 4 is a schematic diagram of a charging system shown according to an exemplary embodiment;

[0067] Figure 5 is a schematic diagram of a charging circuit shown according to an exemplary embodiment;

[0068] Figure 6 is a schematic diagram of another charging circuit shown according to an exemplary embodiment;

[0069] Figure 7 is a block diagram of another dual-gun charging system shown according to an exemplary embodiment;

[0070] Figure 8 is a schematic diagram of another charging circuit shown according to an exemplary embodiment;

[0071] Figure 9 is a schematic flow diagram of a charging control method shown according to an embodiment of the present disclosure;

[0072] Figure 10 is a schematic diagram of a charging mode shown according to an exemplary embodiment;

[0073] Figure 11 is a schematic diagram of another charging mode shown according to an exemplary embodiment;

[0074] Figure 12 is a schematic diagram of another charging mode shown according to an exemplary embodiment;

[0075] Figure 13 is a schematic diagram of another charging mode shown according to an exemplary embodiment;

[0076] Figure 14 is a schematic diagram of another charging mode shown according to an exemplary embodiment;

[0077] Figure 15 is a schematic diagram of another charging mode shown according to an exemplary embodiment;

[0078] Figure 16 is a schematic flow diagram of another charging control method shown according to an embodiment of the present disclosure;

[0079] Figure 17 is a block diagram of a controller shown according to an exemplary embodiment;

[0080] Figure 18 is a block diagram of a vehicle shown according to an exemplary embodiment;

[0081] Figure 19 is a block diagram of another vehicle shown according to an exemplary embodiment.

[0082] Description of Reference Numerals

[0083] Charging system 200; charging circuit 201; controller 202; first charging port 2011; second charging port 2012; power battery 2013; switch assembly 2014; first switch S1; second switch S2; third switch S3; fourth switch S4; fifth switch S5; sixth switch S6; transistor assembly V; first battery pack 2013a; second battery pack 2013b; seventh switch S7; first transistor assembly V1; second transistor assembly V2; inductor assembly L; first capacitor C1; second capacitor C2; vehicle 300. Detailed implementation manners

[0084] The following details the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for the purpose of illustrating and explaining the present disclosure, and are not intended to limit the present disclosure.

[0085] Before introducing a charging control method, a charging system, a controller, and a vehicle shown in the embodiments of the present disclosure, the application scenarios related to the embodiments of the present disclosure are first introduced.

[0086] In the related art, referring to Figure 1 , the dual-gun charging system is a first boost charging circuit plus a second direct connection charging circuit solution. The power battery of the charging vehicle is charged through the dual charging circuits, and the boost circuit is controlled according to the voltage magnitude of the external power supply to increase the charging speed of the electric vehicle and achieve high-power charging.

[0087] To be compatible with low-voltage DC charging piles below 500V, most dual-gun charging adopts the boost charging solution for the first charging port. When the first charging port is connected to a DC pile and the second charging port is connected to a non-high-voltage DC charging pile, dual-gun charging cannot be entered.

[0088] Figure 2 is a flowchart of a charging control method shown according to an exemplary embodiment. As Figure 2 shown, the method includes:

[0089] Step S101, obtaining the currently set charging mode of the charging circuit.

[0090] Step S102, obtaining the charging states of the first charging port and the second charging port, where the charging state represents the interaction state between the charging port and the charging pile.

[0091] Exemplarily, the execution entity of the embodiments of the present disclosure may be a controller connected to the charging circuit. The controller may periodically inspect the state of the charging circuit, and obtain in real time the currently set charging mode of the charging circuit, as well as the charging states of the first charging port and the second charging port. Among them, the currently set charging mode may be one of a plurality of preset dual-gun modes and a plurality of single-gun modes. The charging state may represent the interaction state between the charging port and the charging pile. The charging state may include, for example: the charging port is connected to the charging pile through a charging gun, the charging port is not connected to the charging pile through a charging gun, the charging port has completed the charging handshake interaction with the charging pile, the charging interaction between the charging port and the charging pile has terminated, the charging pile charges the power battery through the charging port, the charging pile does not charge the power battery through the charging port, etc.

[0092] In the present disclosure, step S101 may be executed first and then step S102, or step S102 may be executed first and then step S101. The present disclosure does not specifically limit the order of step S101 and step S102.

[0093] Step S103, control the switch assembly according to the currently set charging mode and charging state to switch the charging mode of the charging circuit.

[0094] Exemplarily, when the currently set charging mode is one of a plurality of preset single-gun modes, it may be determined whether the charging handshake interaction between the first charging port and the second charging port and the charging pile is completed, and then it is further determined whether to switch the charging mode of the charging circuit.

[0095] In some embodiments, if the currently set charging mode includes charging the power battery through the first charging port, and it is determined that the charging handshake interaction between the second charging port and the charging pile is completed, indicating that it is necessary to switch the current charging mode from the single-gun mode to the dual-gun mode, then the target charging mode may be determined from a plurality of dual-gun modes according to the maximum output voltage of the charging pile connected to the second charging port, and the charging mode of the charging circuit may be switched to the target charging mode by controlling the switch assembly.

[0096] In other embodiments, if the currently set charging mode includes charging the power battery through the second charging port, and it is determined that the charging handshake interaction between the first charging port and the charging pile is completed, indicating that it is necessary to switch the current charging mode from the single-gun mode to the dual-gun mode, then the target charging mode may be determined from a plurality of dual-gun modes according to the maximum output voltage of the charging pile connected to the first charging port, and the charging mode of the charging circuit may be switched to the target charging mode by controlling the switch assembly.

[0097] When the currently set charging mode is one of a plurality of preset dual-gun modes, it is possible to determine whether the charging processes of the first charging port and the second charging port are terminated. Among them, the situations where the charging process is terminated may include the disconnection of the connection between the charging port and the charging gun, and the termination of the interaction between the charging port and the charging pile. If the charging process of any one of the first charging port and the second charging port is terminated, the corresponding target charging mode can be further determined, and the charging mode of the charging circuit can be switched to the target charging mode.

[0098] In some embodiments, if the currently set charging mode includes charging the power battery through the first charging port and the second charging port simultaneously, and it is determined that the charging process of the first charging port is terminated, then the target charging mode can be determined from a plurality of single-gun modes according to the maximum output voltage of the charging pile connected to the second charging port, and the charging mode of the charging circuit can be switched to the target charging mode by controlling the switch assembly.

[0099] In other embodiments, if the currently set charging mode includes charging the power battery through the first charging port and the second charging port simultaneously, and it is determined that the charging process of the second charging port is terminated, then the target charging mode can be determined from a plurality of single-gun modes according to the maximum output voltage of the charging pile connected to the first charging port, and the charging mode of the charging circuit can be switched to the target charging mode by controlling the switch assembly.

[0100] Through the above method, the present disclosure can simultaneously solve the problems of jump failure in single-gun to dual-gun charging and unexpected termination of charging in dual-gun to single-gun charging, ensuring smooth switching of the charging circuit and uninterrupted charging process.

[0101] In summary, the present disclosure is applied to a charging circuit, which includes: a first charging port, a second charging port, a power battery, and a switch assembly. The first charging port and the second charging port are respectively connected to the power battery through the switch assembly. First, obtain the currently set charging mode of the charging circuit, and obtain the charging states of the first charging port and the second charging port. Among them, the charging state indicates whether the charging circuit is charging through the charging port. Then, control the switch assembly according to the currently set charging mode and the charging state to switch the charging mode of the charging circuit. The present disclosure switches the charging mode according to the currently set charging mode of the charging circuit and the charging state of the charging port, and can switch to a charging mode adapted to the charging state of the charging port when the charging state of the charging port does not match the currently set charging mode, improving the flexibility and smoothness of switching the charging mode.

[0102] Figure 3 is a flowchart of a charging control method shown according to an exemplary embodiment. As Figure 3 shown, step S103 can be implemented through the following steps:

[0103] Step S1031: Determine the target charging mode according to the currently set charging mode and charging status.

[0104] Step S1032: Control the switch component according to the target charging mode to switch the currently set charging mode to the target charging mode.

[0105] According to some embodiments shown in the present disclosure, one implementation manner of step S103 may be:

[0106] When the currently set charging mode indicates that the charging circuit charges through the first target charging port, and the charging status indicates that the charging handshake confirmation is completed between the candidate charging port and the candidate charging pile, obtain the maximum output voltage of the candidate charging pile. The first target charging port includes the first charging port or the second charging port. The candidate charging port includes the charging port other than the first target charging port among the first charging port and the second charging port. The candidate charging pile includes the charging pile connected to the candidate charging port.

[0107] Determine the target charging mode according to the maximum output voltage of the candidate charging pile and the currently set charging mode.

[0108] For example, when the first target charging port is the first charging port, the candidate charging port may be the second charging port, and the candidate charging pile may be the second charging pile connected to the second charging port. If the currently set charging mode indicates that the charging circuit charges through the first charging port, but the charging status indicates that the charging handshake confirmation is completed between the second charging port and the second charging pile, which means that the charging mode needs to be switched from the single-gun charging mode to a suitable double-gun charging mode, then the maximum output voltage of the second charging pile can be obtained, and the target charging mode can be determined according to the maximum output voltage of the second charging pile and the currently set charging mode.

[0109] When the first target charging port is the second charging port, the candidate charging port may be the first charging port, and the candidate charging pile may be the first charging pile connected to the first charging port. If the currently set charging mode indicates that the charging circuit charges through the second charging port, but the charging status indicates that the charging handshake confirmation is completed between the first charging port and the candidate charging pile, which means that the charging mode needs to be switched from the single-gun charging mode to a suitable double-gun charging mode, then the maximum output voltage of the first charging pile can be obtained, and the target charging mode can be determined according to the maximum output voltage of the first charging pile and the currently set charging mode.

[0110] In some embodiments, when the first preset condition is satisfied, the target charging mode is determined to be the first dual-gun mode. The first preset condition may include: 1) The maximum output voltage is greater than or equal to the battery voltage of the power battery, and the battery voltage of the power battery may be the total voltage after the first battery pack and the second battery pack are connected in series; 2) The currently set charging mode includes: charging the first battery pack and the second battery in series through the first target charging port. The first dual-gun mode may include: charging the first battery pack and the second battery pack in series through the first charging port, and charging the first battery pack and the second battery pack in series through the second charging port.

[0111] Exemplarily, when the first target charging port is the first charging port, the candidate charging port may be the second charging port, and the candidate charging pile may be the second charging pile connected to the second charging port. If the maximum output voltage of the second charging pile is greater than or equal to the battery voltage of the power battery, and the currently set charging mode includes: charging the first battery pack and the second battery in series through the first charging port, then the first dual-gun mode may be used as the target charging mode.

[0112] When the first target charging port is the second charging port, the candidate charging port may be the first charging port, and the candidate charging pile may be the first charging pile connected to the first charging port. If the maximum output voltage of the first charging pile is greater than or equal to the battery voltage of the power battery, and the currently set charging mode includes: charging the first battery pack and the second battery in series through the first charging port, then the first dual-gun mode may be used as the target charging mode.

[0113] In other embodiments, when the second preset condition is satisfied, the target charging mode is determined to be the second dual-gun mode. The second preset condition includes: 1) The maximum output voltage is greater than or equal to the battery voltage of the power battery; 2) The currently set charging mode includes: charging the first battery pack and the second battery pack in parallel through the first target charging port. Or, boosting the input direct current through the buck-boost module corresponding to the first target charging port, and charging the first battery pack and the second battery pack in series with the boosted direct current. The second dual-gun mode includes: charging the first battery pack through the first charging port, and charging the second battery pack through the second charging port.

[0114] In other embodiments, when the maximum output voltage of the candidate charging pile is less than the battery voltage of the power battery, the target charging mode may be determined to be the second dual-gun mode.

[0115] Exemplarily, when the first target charging port is the first charging port, the candidate charging port can be the second charging port, and the candidate charging pile can be the second charging pile connected to the second charging port. If the maximum output voltage of the second charging pile is greater than or equal to the battery voltage of the power battery, and the currently set charging mode includes: boosting the input direct current through the buck-boost module corresponding to the first charging port, and performing series charging on the first battery pack and the second battery pack with the boosted direct current. Then the second dual-gun mode can be used as the target charging mode. If the maximum output voltage of the second charging pile is less than the battery voltage of the power battery, then the second dual-gun mode can be used as the target charging mode.

[0116] When the first target charging port is the second charging port, the candidate charging port can be the first charging port, and the candidate charging pile can be the first charging pile connected to the first charging port. If the maximum output voltage of the first charging pile is greater than or equal to the battery voltage of the power battery, and the currently set charging mode includes: performing parallel charging on the first battery pack and the second battery pack through the first target charging port, then the second dual-gun mode can be used as the target charging mode. If the maximum output voltage of the first charging pile is less than the battery voltage of the power battery, then the second dual-gun mode can be used as the target charging mode.

[0117] According to some other embodiments shown in the present disclosure, another implementation manner of step S103 can be:

[0118] When the currently set charging mode indicates that the charging circuit charges through the first charging port and the second charging port simultaneously, and the charging status indicates that the charging pile does not charge through the second target charging port, obtain the maximum output voltage of the target charging pile. The second target charging port includes the first charging port or the second charging port, and the target charging pile includes the charging pile corresponding to the charging port other than the second target charging port among the first charging port and the second charging port.

[0119] Determine the target charging mode according to the maximum output voltage of the target charging pile.

[0120] Exemplarily, when the second target charging port is the first charging port, the target charging pile can be the second charging pile connected to the second charging port. If the currently set charging mode indicates that the charging circuit charges through the first charging port and the second charging port simultaneously, and the charging status indicates that the charging pile does not charge through the first charging port, which means that the charging mode needs to be switched from the dual-gun charging mode to a suitable single-gun charging mode, then the maximum output voltage of the second charging pile can be obtained, and the target charging mode can be determined according to the maximum output voltage of the second charging pile and the currently set charging mode.

[0121] When the second target charging port is the second charging port, the target charging pile can be the first charging pile connected to the first charging port. If the currently set charging mode indicates that the charging circuit charges through both the first charging port and the second charging port, and the charging status indicates that the charging pile does not charge through the second charging port, it means that the charging mode needs to be switched from the dual-gun charging mode to a suitable single-gun charging mode. Then, the maximum output voltage of the first charging pile can be obtained, and the target charging mode can be determined based on the maximum output voltage of the first charging pile and the currently set charging mode.

[0122] In some embodiments, the second target charging port can be the second charging port. When the fourth preset condition is met, the target charging mode can be determined as the first single-gun mode. Among them, the fourth preset condition can include: the maximum output voltage of the first charging pile connected to the first charging port is greater than or equal to the battery voltage of the power battery. The first single-gun mode can include: charging the first battery pack and the second battery pack in series through the first charging port.

[0123] In some other embodiments, the second target charging port can be the second charging port. When the fifth preset condition is met, the target charging mode can be determined as the second single-gun mode. Among them, the fifth preset condition can include: the maximum output voltage of the first charging pile connected to the first charging port is less than the battery voltage of the power battery. The second single-gun mode can include: boosting the direct current input through the first charging port through a transistor component, and using the boosted direct current to charge the first battery pack and the second battery pack in series.

[0124] In some other embodiments, the second target charging port can be the first charging port. When the sixth preset condition is met, the target charging mode can be determined as the third single-gun mode. Among them, the sixth preset condition includes: the maximum output voltage of the second charging pile connected to the second charging port is greater than or equal to the battery voltage of the power battery. The third single-gun mode can include: charging the first battery pack and the second battery pack in series through the second charging port.

[0125] In some other embodiments, the second target charging port can be the first charging port. When the seventh preset condition is met, the target charging mode can be determined as the fourth single-gun mode. Among them, the seventh preset condition can include: the maximum output voltage of the second charging pile connected to the second charging port is less than the battery voltage of the power battery. The fourth single-gun mode can include: charging the first battery pack and the second battery pack in parallel through the second charging port.

[0126] In summary, the present disclosure obtains the currently set charging mode and the charging states of the first charging port and the second charging port, where the charging state represents the interaction state between the charging port and the charging pile. Then, the switch assembly is controlled according to the currently set charging mode and the charging state to switch the charging mode. The present disclosure switches the charging mode based on the currently set charging mode of the charging circuit and the charging state of the charging port, and can switch to a charging mode adapted to the charging state of the charging port when the charging state of the charging port does not match the currently set charging mode, improving the flexibility and smoothness of switching the charging mode.

[0127] Figure 4 is a schematic diagram of a charging system shown according to an exemplary embodiment, as Figure 4 shown, the charging system 200 includes: a charging circuit 201 and a controller 202, and the charging circuit 201 is connected to the controller 202. The charging circuit 201 includes: a first charging port 2011, a second charging port 2012, a power battery 2013, and a switch assembly 2014. The first charging port 2011 and the second charging port 2012 are respectively connected to the power battery 2013 through the switch assembly 2014. The controller 202 is configured to:

[0128] Obtain the currently set charging mode.

[0129] Obtain the charging states of the first charging port and the second charging port, where the charging state represents the interaction state between the charging port and the charging pile.

[0130] Control the switch assembly according to the currently set charging mode and the charging state to switch the charging mode.

[0131] Exemplarily, the execution subject of the embodiment of the present disclosure may be a controller connected to the charging circuit. The controller may periodically inspect the state of the charging circuit, and obtain in real time the currently set charging mode of the charging circuit and the charging states of the first charging port and the second charging port. Among them, the currently set charging mode may be one of a plurality of pre-set dual-gun modes and a plurality of single-gun modes. The charging state may represent the interaction state between the charging port and the charging pile. The charging state may include, for example: the charging port is connected to the charging pile through a charging gun, the charging port is not connected to the charging pile through a charging gun, the charging port completes the charging handshake interaction with the charging pile, the charging interaction between the charging port and the charging pile terminates, the charging pile charges the power battery through the charging port, the charging pile does not charge the power battery through the charging port, etc.

[0132] Exemplarily, when the currently set charging mode is one of a plurality of pre-set single-gun modes, it may be determined whether the first charging port and the second charging port have completed the charging handshake interaction with the charging pile, and then it is further determined whether to switch the charging mode of the charging circuit.

[0133] In some embodiments, if the currently set charging mode includes charging the power battery through the first charging port, and it is determined that the charging handshake interaction between the second charging port and the charging pile is completed, indicating that it is necessary to switch the current charging mode from the single-gun mode to the double-gun mode, then the target charging mode can be determined from multiple double-gun modes according to the maximum output voltage of the charging pile connected to the second charging port, and the charging mode of the charging circuit can be switched to the target charging mode by controlling the switch assembly.

[0134] In other embodiments, if the currently set charging mode includes charging the power battery through the second charging port, and it is determined that the charging handshake interaction between the first charging port and the charging pile is completed, indicating that it is necessary to switch the current charging mode from the single-gun mode to the double-gun mode, then the target charging mode can be determined from multiple double-gun modes according to the maximum output voltage of the charging pile connected to the first charging port, and the charging mode of the charging circuit can be switched to the target charging mode by controlling the switch assembly.

[0135] When the currently set charging mode is one of a plurality of preset double-gun modes, it can be determined whether the charging processes of the first charging port and the second charging port are terminated. Among them, the situations where the charging process is terminated can include the disconnection of the connection between the charging port and the charging gun, and the termination of the interaction between the charging port and the charging pile. If the charging process of any one of the first charging port and the second charging port is terminated, the corresponding target charging mode can be further determined, and the charging mode of the charging circuit can be switched to the target charging mode.

[0136] In some embodiments, if the currently set charging mode includes charging the power battery through the first charging port and the second charging port simultaneously, and it is determined that the charging process of the first charging port is terminated, then the target charging mode can be determined from multiple single-gun modes according to the maximum output voltage of the charging pile connected to the second charging port, and the charging mode of the charging circuit can be switched to the target charging mode by controlling the switch assembly.

[0137] In other embodiments, if the currently set charging mode includes charging the power battery through the first charging port and the second charging port simultaneously, and it is determined that the charging process of the second charging port is terminated, then the target charging mode can be determined from multiple single-gun modes according to the maximum output voltage of the charging pile connected to the first charging port, and the charging mode of the charging circuit can be switched to the target charging mode by controlling the switch assembly.

[0138] Through the above method, the present disclosure can simultaneously solve the problems of jump failure in single-gun to double-gun charging and unexpected termination of charging in double-gun to single-gun charging, ensuring smooth switching of the charging circuit and uninterrupted charging process.

[0139] Figure 5It is a schematic diagram of a charging circuit shown according to an exemplary embodiment, as Figure 5 shown, the switch assembly 2014 includes a first switch S1, a second switch S2, a third switch S3, a fourth switch S4, a fifth switch S5, a sixth switch S6, and a transistor assembly V. The power battery 2013 includes a first battery pack 2013a, a second battery pack 2013b, and a seventh switch S7.

[0140] The first end of the first switch S1 is connected to the first end of the first charging port 2011, and the second end of the first switch S1 is connected to the first end of the transistor assembly V. The first end of the second switch S2 is connected to the second end of the first charging port 2011, and the second end of the second switch S2 is connected to the second end of the transistor assembly V. The third end of the transistor assembly V is connected to the first end of the first battery pack 2013a, the second end of the first battery pack 2013a is connected to the first end of the seventh switch S7, the second end of the seventh switch S7 is connected to the first end of the second battery pack 2013b, and the second end of the second battery pack 2013b is connected to the fourth end of the transistor assembly V. The first end of the third switch S3 is connected to the first end of the transistor assembly V, and the second end of the third switch S3 is connected to the first end of the second battery pack 2013b.

[0141] The first end of the fourth switch S4 is connected to the first end of the second charging port 2012, and the second end of the fourth switch S4 is connected to the first end of the first battery pack 2013a. The first end of the fifth switch S5 is connected to the second end of the second charging port 2012, and the second end of the fifth switch S5 is connected to the second end of the second battery pack 2013b. The first end of the sixth switch S6 is connected to the second end of the first battery pack 2013a, and the second end of the sixth switch S6 is connected to the second end of the second battery pack 2013b.

[0142] Figure 6 It is a schematic diagram of another charging circuit shown according to an exemplary embodiment, as Figure 6 shown, the transistor assembly V includes: a first transistor assembly V1, a second transistor assembly V2, an inductor assembly L, a first capacitor C1, and a second capacitor C2.

[0143] The second end of the first switch S1 is connected to the first end of the inductor assembly L, the second end of the inductor assembly L is connected to the first end of the first transistor assembly V1, and the second end of the first transistor assembly V1 is connected to the first end of the first battery pack 2013a. The second end of the inductor assembly L is also connected to the first end of the second transistor assembly V2, and the second end of the second transistor assembly V2 is connected to the second end of the second battery pack 2013b.

[0144] The first end of the first capacitor C1 is connected to the second end of the first transistor assembly V1, and the second end of the first capacitor C1 is connected to the second end of the second transistor assembly V2. The first end of the second capacitor C2 is connected to the first end of the inductor assembly L, and the second end of the second capacitor C2 is connected to the second end of the second transistor assembly V2.

[0145] When the target charging mode is the first dual-gun mode, the controller 202 can control the first switch, the second switch, the fourth switch, the fifth switch, and the seventh switch to be closed, the third switch and the sixth switch to be opened, the first transistor assembly to be turned on, and the second transistor assembly to be turned off, so as to perform series charging for the first battery pack and the second battery pack through the first charging port, and perform series charging for the first battery pack and the second battery pack through the second charging port.

[0146] When the target charging mode is the second dual-gun mode, the controller 202 can control the first switch, the second switch, the third switch, the fourth switch, the fifth switch, and the sixth switch to be closed, the seventh switch to be opened, the first transistor assembly to be turned on, and the second transistor assembly to be turned off, so as to charge the first battery pack through the first charging port and charge the second battery pack through the second charging port.

[0147] When the target charging mode is the first single-gun mode, the controller 202 can control the first switch, the second switch, and the seventh switch to be closed, the third switch, the fourth switch, the fifth switch, and the sixth switch to be opened, the first transistor assembly to be turned on, and the second transistor assembly to be turned off, so as to perform series charging for the first battery pack and the second battery pack through the first charging port.

[0148] When the target charging mode is the second single-gun mode, the controller 202 can control the first switch, the second switch, and the seventh switch to be closed, the third switch, the fourth switch, the fifth switch, and the sixth switch to be opened, and control the first transistor assembly and the second transistor assembly to be turned on in sequence according to a preset period, so as to boost the direct current input through the first charging port through the transistor assembly, and use the boosted direct current to perform series charging for the first battery pack and the second battery pack.

[0149] When the target charging mode is the third single-gun mode, the controller 202 can control the fourth switch, the fifth switch, and the seventh switch to be closed, the first switch, the second switch, the third switch, and the sixth switch to be opened, and the first transistor assembly and the second transistor assembly to be turned off, so as to perform series charging for the first battery pack and the second battery pack through the second charging port.

[0150] When the target charging mode is the fourth single-gun mode, the controller 202 can control the third switch, the fourth switch, the fifth switch, and the sixth switch to close, and the first switch, the second switch, and the seventh switch to open. The first transistor assembly is turned on, and the second transistor assembly is turned off, so that the target charging pile charges the first battery pack and the second battery pack in parallel through the second charging port.

[0151] In summary, the present disclosure is applied to a charging circuit, which includes: a first charging port, a second charging port, a power battery, and a switch assembly. The first charging port and the second charging port are respectively connected to the power battery through the switch assembly. First, obtain the currently set charging mode of the charging circuit and the charging states of the first charging port and the second charging port, where the charging state indicates whether the charging circuit is charging through the charging port. Then, control the switch assembly according to the currently set charging mode and the charging states to switch the charging mode of the charging circuit. The present disclosure switches the charging mode according to the currently set charging mode of the charging circuit and the charging states of the charging ports, and can switch to a charging mode adapted to the charging states of the charging ports when the charging states of the charging ports do not match the currently set charging mode, improving the flexibility and smoothness of switching the charging mode.

[0152] The following gives a specific embodiment, which is based on the principle of Figure 7 a block diagram. The dual-gun charging system includes: a power battery, a buck-boost module, a first charging port circuit, a second charging port circuit, a control unit, etc. The power battery includes Pack 1, switch K5, and Pack 2 connected in series. The buck-boost module is composed of a capacitor and n buck-boost inverters. Each buck-boost inverter includes an inverter bridge and an inductor. One end of the inductor is connected to the midpoint of the corresponding inverter bridge, and the other end is connected to the positive pole of the charging port. n is an integer equal to or greater than 1. The control unit interacts with the DC charging piles connected to the first charging port and the second charging port to judge the voltage magnitude of the external power supply and control the charging system to enter a suitable charging circuit.

[0153] Figure 8 a specific embodiment of reusing a vehicle drive motor Figure 8The dual-gun charging system in includes: Packet 1, Packet 2, Switch K5, Switch K1, Switch K2, Switch K3, Switch K4, Switch K6, Switch K7, Switch K8, Switch K9, Switch K10, Resistor R, Switching transistors VT1 / VT2 / VT3 / VT4 / VT5 / VT6, Diodes VD1 / VD2 / VD3 / VD4 / VD5 / VD6, Capacitor C1, Capacitor C2. Among them, the first charging port loop includes: the first charging port, Switch K1, Switch K2, Switch K6, Switch K7, Switch K8, Switch K9, Resistor R, Switching transistors VT1 / VT2 / VT3 / VT4 / VT5 / VT6, Diodes VD1 / VD2 / VD3 / VD4 / VD5 / VD6, Capacitor C1, Capacitor C2. The second charging port loop includes: the second charging port, Switch K3, Switch K4, Switch K5, Switch K10.

[0154] As Figure 9 shown, the control logic steps of the specific method for switching from single-gun charging to dual-gun charging are as follows:

[0155] Step 1: The control module inspects the charging system status. If it meets the single-gun charging process of the second charging port loop, proceed to Step 2; if it meets the single-gun charging process of the first charging port loop, proceed to Step 12.

[0156] Step 2: The control module determines that the first charging port gun is connected and a charging handshake confirmation is made, then proceed to Step 3.

[0157] Step 3: The control module determines the capacity of Charging Pile 1. If the maximum output voltage of Charging Pile 1 is greater than the battery pack voltage, proceed to Step 4; if the maximum output voltage of Charging Pile 1 is less than the battery pack voltage, proceed to Step 9.

[0158] Step 4: The control module executes the current process mode judgment of the second charging port loop and proceeds to Step 5.

[0159] Step 5: The control module determines that the current is single-gun mode 3: the second charging port loop is directly connected to the full pack for charging, then proceed to Step 6; determines that the current is single-gun mode 4: the second charging port loop is in half-pack parallel charging, then proceed to Step 9.

[0160] Among them, as Figure 10 shown, when the currently set charging mode is single-gun mode 3, the second charging port loop is directly connected to the full pack for charging, that is, control switches K3, K4, K5, K6, K9 to close. As Figure 11 shown, when the currently set charging mode is single-gun mode 4, the second charging port loop is in half-pack parallel charging, that is, control switches K3, K4, K9, K10, K6, K7 to close, switch K5 to open, and switching transistors VT1 / VT3 / VT5 to conduct, that is, control Packet 1 and Packet 2 to charge in parallel.

[0161] Step 6: The control mode controls the second charging port circuit to maintain and update the charging demand, and proceeds to Step 7;

[0162] Step 7: The control mode controls the first charging port circuit to enter the charging ready state and sends the charging demand, and proceeds to Step 8;

[0163] Step 8: The control module controls the charging system to execute Dual Gun Mode 1: Dual-loop full-package charging.

[0164] Among them, as Figure 12 shown, when the currently set charging mode is Dual Gun Mode 1, dual-loop full-package charging is performed, that is, control switches K1, K2, K3, K4, K5, K6, K9 are closed, and switch transistors VT1 / VT3 / VT5 are turned on, that is, control the first charging port circuit to enter full-package charging and the second charging port circuit also enters full-package charging.

[0165] Step 9: The control mode controls the second charging port circuit to execute the mode switching process, switches from the current circuit to the target charging circuit, and updates the charging demand, and proceeds to Step 10;

[0166] Step 10: The control mode controls the first charging port circuit to enter the charging ready state and sends the charging demand, and proceeds to Step 11;

[0167] Step 11: The control module controls the charging system to execute Dual Gun Mode 2: Dual-loop independent half-package charging.

[0168] Among them, as Figure 13 shown, when the currently set charging mode is Dual Gun Mode 2, dual-loop independent half-package charging is performed, that is, control switches K1, K2, K3, K4, K7, K6, K9, K10 are closed, and switch K5 is open, that is, control the first charging port circuit to charge Package 2 and the second charging port circuit to charge Package 1.

[0169] Step 12: The control module determines that the second charging port gun is connected and a charging handshake confirmation is performed, and proceeds to Step 13;

[0170] Step 13: The control module determines the capabilities of Charging Pile 2. If the maximum output voltage of Charging Pile 2 is greater than the battery pack voltage, proceed to Step 14; if the maximum output voltage of Charging Pile 2 is less than the battery pack voltage, proceed to Step 19;

[0171] Step 14: The control module executes the current process mode judgment of the first charging port circuit and proceeds to Step 15;

[0172] Step 15: The control module determines that the current is Single Gun Mode 1: The first charging port circuit is non-boost full-package charging, and proceeds to Step 16; determines that the current is Single Gun Mode 2: The first charging port circuit is boost full-package charging, and proceeds to Step 19;

[0173] Among them, as Figure 14 shown, when the currently set charging mode is single-gun mode 1, the first charging port circuit performs non-boost full-pack charging, that is, control switches K1, K2, K5, K6, and K9 are closed, and switching transistors VT1 / VT3 / VT5 are turned on. As Figure 15 shown, when the currently set charging mode is single-gun mode 2, the first charging port circuit performs boost full-pack charging, that is, control switches K1, K2, K5, K6, and K9 are closed, and at the same time, switching transistors VT2 / VT4 / VT6 are turned on and VT1 / VT3 / VT5 are turned off to charge the inductor, and then switching transistors VT2 / VT4 / VT6 are turned off and VT1 / VT3 / VT5 are turned on to discharge the inductor, that is, the motor boost technology is used to charge the entire pack.

[0174] Step 16: The control mode controls the first charging port circuit to maintain and update the charging demand, and enters Step 17;

[0175] Step 17: The control mode controls the second charging port circuit to enter the charging ready state and sends the charging demand, and enters Step 18;

[0176] Step 18: The control module controls the charging system to execute dual-gun mode 1: dual-circuit full-pack charging.

[0177] Step 19: The control mode controls the first charging port circuit to execute the mode switching process, switches from the current circuit to the target charging circuit, and updates the charging demand, and enters Step 20;

[0178] Step 20: The control mode controls the second charging port circuit to enter the charging ready state and sends the charging demand, and enters Step 21;

[0179] Step 21: The control module controls the charging system to execute dual-gun mode 2: dual-circuit independent half-pack charging.

[0180] As Figure 16 shown, the control logic steps of the specific method for switching from dual-gun charging to single-gun charging are as follows:

[0181] Step 1: The control module inspects the charging system status, and if it is determined that the dual-gun charging process is satisfied, it enters Step 2;

[0182] Step 2: The control module inspects the charging process conditions. If it is determined that the second charging port process is terminated, such as the second charging port gun connection is disconnected, the interaction with the charging pile is terminated, etc., it enters Step 3; if it is determined that the first charging port process is terminated, such as the second charging port gun connection is disconnected, the interaction with the charging pile is terminated, etc., it enters Step 11;

[0183] Step 3: The control module determines the capabilities of the charging pile 1. If the maximum output voltage of the charging pile 1 is greater than the voltage of the entire battery pack, proceed to Step 4; if the maximum output voltage of the charging pile 1 is less than the voltage of the entire battery pack, proceed to Step 9;

[0184] Step 4: The control module executes the current process mode judgment for the first charging port circuit and proceeds to Step 5;

[0185] Step 5: The control module determines that the current is the dual-gun mode 1: dual-circuit full-pack charging, and proceeds to Step 6; determines that the current is the dual-gun mode 2: dual-circuit independent half-pack charging, and proceeds to Step 8;

[0186] Step 6: The control mode controls the first charging port circuit to maintain and update the charging demand and proceeds to Step 7;

[0187] Step 7: The control module controls the charging system to execute the single-gun mode 1: non-boost full-pack charging for the first charging port circuit.

[0188] Step 8: The control mode controls the first charging port circuit to execute the mode switching process, switches from the current circuit to the target charging circuit, and updates the charging demand, then proceeds to Step 7;

[0189] Step 9: The control mode controls the first charging port circuit to execute the mode switching process, switches from the current circuit to the target charging circuit, and updates the charging demand, then proceeds to Step 10;

[0190] Step 10: The control module controls the charging system to execute the single-gun mode 2: boost full-pack charging for the first charging port circuit.

[0191] Step 11: The control module determines the capabilities of the charging pile 2. If the maximum output voltage of the charging pile 2 is greater than the voltage of the entire battery pack, proceed to Step 12; if the maximum output voltage of the charging pile 2 is less than the voltage of the entire battery pack, proceed to Step 17;

[0192] Step 12: The control module executes the current process mode judgment for the second charging port circuit and proceeds to Step 13;

[0193] Step 13: The control module determines that the current is the dual-gun mode 1: dual-circuit full-pack charging, and proceeds to Step 14; determines that the current is the dual-gun mode 2: dual-circuit independent half-pack charging, and proceeds to Step 16;

[0194] Step 14: The control mode controls the second charging port circuit to maintain and update the charging demand and proceeds to Step 15;

[0195] Step 15: The control module controls the charging system to execute the single-gun mode 3: direct connection full-pack charging for the second charging port circuit.

[0196] Step 16: The control mode controls the second charging port circuit to execute a mode switching process, switch from the current circuit to the target charging circuit, update the charging requirement, and enter Step 15;

[0197] Step 17: The control mode controls the second charging port circuit to execute a mode switching process, switch from the current circuit to the target charging circuit, update the charging requirement, and enter Step 18;

[0198] Step 18: The control module controls the charging system to execute single-gun mode 4: semi-pack parallel charging of the second charging port circuit.

[0199] The above control module can be a single controller or multiple controllers for communication and interaction to jointly complete the above control steps.

[0200] Through the above control method, when the high-voltage or low-voltage DC charging pile is connected with a single gun or a double gun, the battery pack can be controlled to enter different charging modes for successful charging, solving the problem that the two charging ports of the double-gun charging system of the high-voltage battery platform cannot be compatible with high-voltage and low-voltage charging piles at the same time.

[0201] Through the above control method, when switching between single-gun and double-gun connections, by identifying the current charging circuit and the status of the pre-switching circuit, the charging circuit can be controlled to switch as required and ensure that the charging process is not interrupted, solving the problems of jump failure in switching from single-gun to double-gun charging and unexpected termination of charging in switching from double-gun to single-gun charging.

[0202] Figure 17 It is a block diagram of a controller shown according to an exemplary embodiment. As Figure 17 shown,

[0203] The controller 202 may include: a processor 2021, a memory 2022. The controller 202 may further include one or more of a multimedia component 2023, an input / output (I / O) interface 2024, and a communication component 2025.

[0204] Among them, the processor 2021 is used to control the overall operation of the controller 202 to complete all or part of the steps in the above charging control method. The memory 2022 is used to store various types of data to support the operation of the controller 202. These data may include, for example, instructions for any application or method operating on the controller 202, as well as application-related data, such as contact data, received and sent messages, pictures, audio, video, and so on. The memory 2022 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The multimedia component 2023 may include a screen and an audio component. Among them, the screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone, and the microphone is used to receive external audio signals. The received audio signals may be further stored in the memory 2022 or sent through the communication component 2025. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 2024 provides an interface between the processor 2021 and other interface modules, and the above other interface modules may be a keyboard, a mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 2025 is used for wired or wireless communication between the controller 202 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, is not limited here. Therefore, the corresponding communication component 2025 may include: a Wi-Fi module, a Bluetooth module, an NFC module, and so on.

[0205] In an exemplary embodiment, the controller 202 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components, and is used to execute the above-mentioned charging control method.

[0206] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided. When the program instructions are executed by a processor, the steps of the above-mentioned charging control method are implemented. For example, the computer-readable storage medium may be the above-mentioned memory 2022 including program instructions, and the above-mentioned program instructions may be executed by the processor 2021 of the controller 202 to complete the above-mentioned charging control method.

[0207] Figure 18 is a block diagram of a vehicle shown according to an exemplary embodiment, as Figure 18 shown, the vehicle 300 is provided with a controller 202.

[0208] Figure 19 is a block diagram of another vehicle shown according to an exemplary embodiment, as Figure 19 shown, the vehicle 300 is provided with a charging system 200.

[0209] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0210] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0211] Furthermore, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A charging control method, characterized in that, the method includes: Obtain the currently set charging mode; Obtain the charging states of the first charging port and the second charging port, where the charging state characterizes the interaction state between the charging port and the charging pile; Control the switch component according to the currently set charging mode and the charging state to switch the charging mode.

2. The method according to claim 1, characterized in that, the controlling the switch component according to the currently set charging mode and the charging state to switch the charging mode includes: Determine the target charging mode according to the currently set charging mode and the charging state; Control the switch component according to the target charging mode to switch the currently set charging mode to the target charging mode.

3. The method according to claim 2, characterized in that, the determining the target charging mode according to the currently set charging mode and the charging state includes: When the currently set charging mode indicates charging through the first target charging port, and the charging state characterizes that the charging handshake confirmation is completed between the candidate charging port and the candidate charging pile, obtain the maximum output voltage of the candidate charging pile; the first target charging port includes the first charging port or the second charging port, the candidate charging port includes the charging port other than the first target charging port among the first charging port and the second charging port, and the candidate charging pile includes the charging pile connected to the candidate charging port; Determine the target charging mode according to the maximum output voltage of the candidate charging pile and the currently set charging mode.

4. The method according to claim 3, characterized in that, the determining the target charging mode according to the maximum output voltage of the candidate charging pile and the currently set charging mode includes: When the first preset condition is satisfied, determine the target charging mode as the first dual-gun mode; wherein, the first preset condition includes: the maximum output voltage is greater than or equal to the battery voltage of the power battery, and the currently set charging mode includes: charging the power battery through the first target charging port; The first dual-gun mode includes: charging the power battery through the first charging port and charging the power battery through the second charging port.

5. The method according to claim 3, characterized in that, the determining the target charging mode according to the maximum output voltage of the candidate charging pile and the currently set charging mode includes: When the second preset condition is satisfied, determine the target charging mode as the second dual-gun mode; wherein, the second preset condition includes: the maximum output voltage is greater than or equal to the battery voltage of the power battery; and the currently set charging mode includes: charging the first battery pack and the second battery pack in parallel through the first target charging port; or charging the power battery after boosting the current of the first target charging port; The second dual-gun mode includes: charging the first battery pack through the first charging port and charging the second battery pack through the second charging port, where the power battery includes a first battery pack and a second battery pack, and the first battery pack and the second battery pack are connected in series.

6. According to the method described in claim 5, wherein, the determining the target charging mode according to the maximum output voltage of the candidate charging pile and the currently set charging mode includes: when the maximum output voltage is less than the battery voltage of the power battery, determining the target charging mode as the second dual-gun mode.

7. According to the method described in claim 2, wherein, the determining the target charging mode according to the currently set charging mode and the charging status includes: when the currently set charging mode indicates charging through both the first charging port and the second charging port at the same time, and the charging status indicates that the charging pile is not charging through the second target charging port, obtaining the maximum output voltage of the target charging pile; the second target charging port includes the first charging port or the second charging port, and the target charging pile includes the charging pile corresponding to the charging port other than the second target charging port among the first charging port and the second charging port; determining the target charging mode according to the maximum output voltage of the target charging pile.

8. According to the method described in claim 7, wherein, the determining the target charging mode according to the maximum output voltage of the target charging pile includes: when the fourth preset condition is satisfied, determining the target charging mode as the first single-gun mode; the fourth preset condition includes: the maximum output voltage of the first charging pile connected to the first charging port is greater than or equal to the battery voltage of the power battery; the second target charging port is the second charging port; the first single-gun mode includes: charging the power battery through the first charging port.

9. According to the method described in claim 7, wherein, the determining the target charging mode according to the maximum output voltage of the target charging pile includes: when the fifth preset condition is satisfied, determining the target charging mode as the second single-gun mode; the fifth preset condition includes: the maximum output voltage of the first charging pile connected to the first charging port is less than the battery voltage of the power battery; the second target charging port is the second charging port; the second single-gun mode includes: charging the power battery after boosting the current of the first charging port.

10. According to the method described in claim 7, wherein, the determining the target charging mode according to the maximum output voltage of the target charging pile includes: when the sixth preset condition is satisfied, determining the target charging mode as the third single-gun mode; the sixth preset condition includes: the maximum output voltage of the second charging pile connected to the second charging port is greater than or equal to the battery voltage of the power battery; the second target charging port is the first charging port; the third single-gun mode includes: charging the power battery through the second charging port.

11. According to the method described in claim 7, wherein, Determining the target charging mode according to the maximum output voltage of the target charging pile includes: When a seventh preset condition is satisfied, determining the target charging mode as the fourth single-gun mode; The seventh preset condition includes: the maximum output voltage of the second charging pile connected to the second charging port is less than the battery voltage of the power battery; the second target charging port is the first charging port; The fourth single-gun mode includes: performing parallel charging on the first battery pack and the second battery pack through the second charging port, where the power battery includes the first battery pack and the second battery pack, and the first battery pack and the second battery pack are connected in series.

12. A charging system, Characterized in that, The charging system includes: a charging circuit and a controller, the charging circuit is connected to the controller; the charging circuit includes: a first charging port, a second charging port, a power battery, and a switch assembly, and the first charging port and the second charging port are respectively connected to the power battery through the switch assembly; the controller is configured to: Determine a target charging port connected to a charging gun from the first charging port and the second charging port; Determine a target charging mode from multiple preset charging modes according to the charging capacity information of the target charging pile and the target charging port; where the target charging pile is a charging pile connected to the target charging port through the charging gun; Control the switch assembly according to the target charging mode to charge the power battery.

13. The system according to claim 12, Characterized in that, The switch assembly includes a first switch, a second switch, a third switch, a fourth switch, a fifth switch, a sixth switch, and a transistor assembly; the power battery includes a first battery pack, a second battery pack, and a seventh switch; The first end of the first switch is connected to the first end of the first charging port, and the second end of the first switch is connected to the first end of the transistor assembly; the first end of the second switch is connected to the second end of the first charging port, and the second end of the second switch is connected to the second end of the transistor assembly; the third end of the transistor assembly is connected to the first end of the first battery pack, the second end of the first battery pack is connected to the first end of the seventh switch, the second end of the seventh switch is connected to the first end of the second battery pack, and the second end of the second battery pack is connected to the fourth end of the transistor assembly; the first end of the third switch is connected to the first end of the transistor assembly, and the second end of the third switch is connected to the first end of the second battery pack; The first end of the fourth switch is connected to the first end of the second charging port, and the second end of the fourth switch is connected to the first end of the first battery pack; the first end of the fifth switch is connected to the second end of the second charging port, and the second end of the fifth switch is connected to the second end of the second battery pack; the first end of the sixth switch is connected to the second end of the first battery pack, and the second end of the sixth switch is connected to the second end of the second battery pack.

14. The system according to claim 13, Characterized in that, The transistor assembly includes: a first transistor assembly, a second transistor assembly, an inductor assembly, a first capacitor, and a second capacitor; The second terminal of the first switch is connected to the first terminal of the inductor assembly, the second terminal of the inductor assembly is connected to the first terminal of the first transistor assembly, and the second terminal of the first transistor assembly is connected to the first terminal of the first battery pack; the second terminal of the inductor assembly is also connected to the first terminal of the second transistor assembly, and the second terminal of the second transistor assembly is connected to the second terminal of the second battery pack; The first terminal of the first capacitor is connected to the second terminal of the first transistor assembly, and the second terminal of the first capacitor is connected to the second terminal of the second transistor assembly; the first terminal of the second capacitor is connected to the first terminal of the inductor assembly, and the second terminal of the second capacitor is connected to the second terminal of the second transistor assembly.

15. A controller, characterized in that, it includes: a memory on which a computer program is stored; a processor for executing the computer program in the memory to implement the steps of the method according to any one of claims 1-11.

16. A vehicle, characterized in that, the vehicle includes the controller according to claim 15.

17. A vehicle, characterized in that, the vehicle includes the charging system according to any one of claims 12-14.

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