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: determining a target charging port connected with a charging gun from a first charging port and a second charging port; and determining a target charging mode from a plurality of preset charging modes according to the charging capability information of the target charging pile and the target charging port. Wherein the target charging pile is a charging pile connected with the target charging port through a charging gun. And controlling the switch assembly according to the target charging mode to charge the power battery. According to the charging circuit, corresponding charging modes can be adapted for output voltages of different charging ports and different charging piles, so that the charging circuit is compatible with the charging piles with different voltages, and the adaptability of the charging circuit to the charging piles and the charging flexibility 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 needs. In related technologies, the two charging ports of the dual-gun charging system cannot be compatible with high- and low-voltage charging piles at the same time. 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.

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

[0005] Determine a target charging port connected to a charging gun from a first charging port and a second charging port;

[0006] Determine a target charging mode from multiple preset charging modes according to the charging capability information of the target charging pile and the target charging port; wherein, the target charging pile is a charging pile connected to the target charging port through the charging gun;

[0007] Control a switch component according to the target charging mode to charge a power battery.

[0008] Optionally, the determining a target charging mode from multiple preset charging modes according to the charging capability information of the target charging pile and the target charging port includes:

[0009] When the target charging port includes the first charging port and the maximum output voltage included in the charging capability information is greater than or equal to the battery voltage of the power battery, use the first charging mode as the target charging mode; wherein, the preset charging modes include: a first charging mode; the first charging mode includes: charging the power battery through the first charging port.

[0010] Optionally, the determining a target charging mode from multiple preset charging modes according to the charging capability information of the target charging pile and the target charging port includes:

[0011] When the target charging port includes the first charging port and the maximum output voltage included in the charging capacity information is less than the battery voltage of the power battery, the second charging mode is taken as the target charging mode; wherein, the preset charging modes include: the second charging mode; the second charging mode includes: charging the power battery after boosting the current input through the first charging port.

[0012] Optionally, the determining the target charging mode from multiple preset charging modes according to the charging capacity information of the target charging pile and the target charging port includes:

[0013] When the target charging port includes the second charging port and the maximum output voltage included in the charging capacity information is greater than or equal to the battery voltage of the power battery, the third charging mode is taken as the target charging mode; the preset charging modes include: the third charging mode; the third charging mode includes: charging the power battery through the second charging port.

[0014] Optionally, the determining the target charging mode from multiple preset charging modes according to the charging capacity information of the target charging pile and the target charging port includes:

[0015] When the target charging port includes the second charging port and the maximum output voltage included in the charging capacity information is less than the battery voltage of the power battery, the fourth charging mode is taken as the target charging mode; the preset charging modes include: the fourth charging mode; the fourth charging mode includes: charging the first battery pack and the second battery pack in parallel 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 connected in series.

[0016] Optionally, the determining the target charging mode from multiple preset charging modes according to the charging capacity information of the target charging pile and the target charging port includes:

[0017] When the target charging port includes the first charging port and the second charging port, and the first maximum output voltage and the second maximum output voltage included in the charging capacity information are both greater than or equal to the battery voltage of the power battery, the fifth charging mode is taken as the target charging mode; the first maximum output voltage is the maximum output voltage of the target charging pile connected to the first charging port, and the second maximum output voltage is the maximum output voltage of the target charging pile connected to the second charging port; the preset charging modes include: the fifth charging mode; the fifth charging mode includes: charging the power battery through the first charging port and the second charging port simultaneously.

[0018] Optionally, determining 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 includes:

[0019] When the target charging port includes the first charging port and the second charging port, and at least one of the first maximum output voltage and the second maximum output voltage included in the charging capacity information is less than the battery voltage of the power battery, taking the sixth charging mode as the target charging mode; the preset charging modes include: the sixth charging mode; the sixth charging mode includes: charging the second battery pack through the first charging port and charging the first battery pack through the second charging port; wherein, 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.

[0020] Optionally, the method further includes:

[0021] Performing a charging handshake confirmation with the target charging pile;

[0022] When the charging handshake confirmation is successful, obtaining the charging capacity information of the target charging pile.

[0023] Optionally, determining 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 includes:

[0024] When the waiting duration after obtaining the charging capacity information reaches a preset time threshold, determining 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.

[0025] 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:

[0026] Determine a target charging port connected to the charging gun from the first charging port and the second charging port;

[0027] 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; wherein, the target charging pile is the charging pile connected to the target charging port through the charging gun;

[0028] Control the switch assembly according to the target charging mode to charge the power battery.

[0029] 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;

[0030] 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;

[0031] 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.

[0032] Optionally, the transistor assembly includes: a first transistor assembly, a second transistor assembly, an inductor assembly, a first capacitor, and a second capacitor;

[0033] 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;

[0034] The first end of the first capacitor is connected to the second end of the first transistor assembly, and the second end of the first capacitor is connected to the second end of the second transistor assembly; the first end of the second capacitor is connected to the first end of the inductor assembly, and the second end of the second capacitor is connected to the second end of the second transistor assembly.

[0035] Optionally, the controller is specifically configured to:

[0036] Control the first switch, the second switch, and the seventh switch to close, and the third switch, the fourth switch, the fifth switch, and the sixth 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 series through the first charging port.

[0037] Optionally, the controller is specifically configured to:

[0038] Control the first switch, the second switch, and the seventh switch to close, and the third switch, the fourth switch, the fifth switch, and the sixth switch to open, and control the first transistor assembly and the second transistor assembly to conduct 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 charge the first battery pack and the second battery pack in series.

[0039] Optionally, the controller is specifically configured to:

[0040] Control the fourth switch, the fifth switch, and the seventh switch to close, and the first switch, the second switch, the third switch, and the sixth switch to open. The first transistor assembly and the second transistor assembly are turned off, so that the target charging pile charges the first battery pack and the second battery pack in series through the second charging port.

[0041] Optionally, the controller is specifically configured to:

[0042] 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.

[0043] Optionally, the controller is specifically configured to:

[0044] Control the first switch, the second switch, the fourth switch, the fifth switch, and the seventh switch to close, and the third switch and the sixth 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 series through the first charging port and the second charging port simultaneously.

[0045] Optionally, the controller is specifically configured to:

[0046] Control the first switch, the second switch, the third switch, the fourth switch, the fifth switch, and the sixth switch to close, and the seventh switch to open, so that the first transistor assembly conducts and the second transistor assembly disconnects, enabling the target charging pile to charge the first battery pack through the first charging port and charge the second battery pack through the second charging port.

[0047] According to the third aspect of the embodiments of the present disclosure, a controller is provided, including:

[0048] A memory on which a computer program is stored;

[0049] A processor configured to execute 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.

[0050] According to the fourth aspect of the embodiments of the present disclosure, a vehicle is provided, where the vehicle includes the controller according to the third aspect of the embodiments of the present disclosure.

[0051] According to the fifth aspect of the embodiments of the present disclosure, a vehicle is provided, where the vehicle includes the charging system according to the second aspect of the embodiments of the present disclosure.

[0052] Through the above technical solutions, the present disclosure first determines a target charging port connected to a charging gun from the first charging port and the second charging port, and determines 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 the charging pile connected to the target charging port through the charging gun. Then, the switch assembly is controlled according to the target charging mode to charge the power battery. The present disclosure determines the corresponding target charging mode according to the target charging port connected to the charging gun and the charging capacity information of the target charging pile connected to the target charging port through the charging gun, and charges the power battery according to the target charging mode. For different charging ports and the output voltages of different charging piles, corresponding charging modes can be adapted, thereby being compatible with charging piles of different voltages, improving the adaptability of the charging circuit to charging piles, and enhancing the flexibility of charging.

[0053] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] 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:

[0055] Figure 1 is a block diagram of a dual-gun charging system shown according to an exemplary embodiment;

[0056] Figure 2 is a flowchart of a charging control method shown according to an exemplary embodiment;

[0057] Figure 3 is a schematic diagram of a charging system shown according to an exemplary embodiment;

[0058] Figure 4 is a schematic diagram of a charging circuit shown according to an exemplary embodiment;

[0059] Figure 5 is a schematic diagram of another charging circuit shown according to an exemplary embodiment;

[0060] Figure 6 is a block diagram of another dual-gun charging system shown according to an exemplary embodiment;

[0061] Figure 7 is a schematic diagram of another charging circuit shown according to an exemplary embodiment;

[0062] Figure 8 is a schematic flowchart of a charging control method shown according to an exemplary embodiment;

[0063] Figure 9 is a schematic diagram of a charging mode shown according to an exemplary embodiment;

[0064] Figure 10 is a schematic diagram of another charging mode shown according to an exemplary embodiment;

[0065] Figure 11 is a schematic diagram of another charging mode shown according to an exemplary embodiment;

[0066] Figure 12 is a schematic diagram of another charging mode shown according to an exemplary embodiment;

[0067] Figure 13 is a schematic diagram of another charging mode shown according to an exemplary embodiment;

[0068] Figure 14 is a schematic diagram of another charging mode shown according to an exemplary embodiment;

[0069] Figure 15 is a block diagram of a controller shown according to an exemplary embodiment;

[0070] Figure 16 is a block diagram of a vehicle shown according to an exemplary embodiment;

[0071] Figure 17 is a block diagram of another vehicle shown according to an exemplary embodiment.

[0072] Description of Reference Numerals

[0073] 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 DESCRIPTION

[0074] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0075] Before introducing a charging control method, a charging system, a controller and a vehicle shown in an embodiment of the present disclosure, the application scenarios involved in the embodiment of the present disclosure are first introduced.

[0076] In the related art, refer to Figure 1 The dual-gun charging system is a first boost charging circuit plus a second direct charging circuit solution. The power battery of the charging vehicle is charged through the dual charging circuit, and the boost circuit is controlled according to the voltage of the external power supply to increase the charging speed of the electric vehicle and achieve high-power charging.

[0077] In order to be compatible with low-voltage DC charging piles below 500V, most dual-gun charging adopts the boost charging solution of the first charging port. However, when the second charging port is connected to a low-voltage DC charging pile alone, it is impossible to charge a high-voltage battery pack; at the same time, 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, the two charging ports of the dual-gun charging system cannot be compatible with high- and low-voltage charging piles at the same time.

[0078] Figure 2 is a flow chart of a charging control method according to an exemplary embodiment. Figure 2 As shown, the method includes:

[0079] Step S101, determining a target charging port connected to a charging gun from the first charging port and the second charging port.

[0080] Exemplarily, the execution subject of the embodiments of the present disclosure may be a controller connected to a charging circuit. The controller may periodically inspect the status of the charging system, determine whether the first charging port and the second charging port are connected to a charging gun, and may determine whether the first charging port and the second charging port perform a charging handshake confirmation with a target charging pile. In some embodiments, the charging port that is connected to the charging gun and successfully performs a charging handshake confirmation with the target charging pile among the first charging port and the second charging port may be used as the target charging port. For example, if the first charging port is connected to the charging gun and successfully performs a charging handshake confirmation with the target charging pile, and the second charging port is not connected to the charging gun, then the first charging port may be used as the target charging port. If the first charging port is connected to the charging gun and successfully performs a charging handshake confirmation with the target charging pile, and the second charging port is connected to the charging gun and successfully performs a charging handshake confirmation with the target charging pile, then the first charging port and the second charging port may be used as the target charging ports.

[0081] Step S102: 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. The target charging pile is the charging pile connected to the target charging port through the charging gun.

[0082] Step S103: Control the switch assembly according to the target charging mode to charge the power battery.

[0083] Exemplarily, after determining the target charging port, the charging capacity information of the target charging pile connected to the target charging port through the charging gun may be obtained. Among them, the charging capacity information may characterize the maximum output capacity of the target charging pile. The charging capacity information may, for example, include the maximum output voltage of the target charging pile. Different target charging ports and charging capacity information of the target charging pile correspond to different charging modes. Among them, the states of each switch in the switch assembly corresponding to each preset charging mode are different, and different charging modes can be realized by controlling the switch assembly.

[0084] In some other embodiments, the magnitude relationship between the maximum output voltage of the target charging pile included in the charging capacity information and the battery voltage of the power battery may be determined, and a suitable target charging mode may be determined from multiple preset charging modes according to the target charging pile and this magnitude relationship. Then, the switch assembly is controlled according to the states of each switch in the switch assembly indicated by the target charging mode, so as to charge the power battery according to the target charging mode.

[0085] In some other embodiments, when the waiting duration after obtaining the charging ability information reaches a preset time threshold, the target charging mode is determined from multiple preset charging modes according to the target charging port and the charging ability information. For example, after obtaining the charging ability information, the controller can control the target timer corresponding to the target charging port to start timing. When the target timer reaches the preset time threshold, step S102 is executed. Among them, the preset time threshold can be comprehensively obtained based on the time required for communication after receiving the charging ability information, the time required for charging mode arbitration, the execution time of the target charging mode, etc. The preset time threshold needs to ensure that the communication between the vehicle and the target charging pile does not time out. When there are multiple target timers, step S102 can be executed when any one of the target timers reaches the preset time threshold.

[0086] Taking the target charging port including a first charging port and a second charging port as an example, the target timer includes a first timer corresponding to the first charging port and a second timer corresponding to the second charging port. When the first timer or the second timer reaches the preset time threshold, the target charging mode is determined from multiple preset charging modes according to the target charging port and the charging ability information. In this way, by setting the preset time threshold, the controller can receive the gun connection status, the charging pile ability, the charging circuit status, etc. within the timing interval corresponding to the preset time threshold, and then determine and execute the target charging mode after reaching the preset time threshold, which can be compatible with different gun plugging and unplugging conditions and communication durations, and ensure the smoothness of charging entry and charging mode switching.

[0087] In summary, the present disclosure first determines the target charging port connected to the charging gun from the first charging port and the second charging port, and determines the target charging mode from multiple preset charging modes according to the charging ability information of the target charging pile and the target charging port, where the target charging pile is the charging pile connected to the target charging port through the charging gun, and then controls the switch assembly according to the target charging mode to charge the power battery. The present disclosure determines the corresponding target charging mode according to the target charging port connected to the charging gun and the charging ability information of the target charging pile connected to the target charging port through the charging gun, and charges the power battery according to the target charging mode. For different charging ports and the output voltages of different charging piles, the corresponding charging mode can be adapted, so as to be compatible with charging piles of different voltages, improve the adaptability of the charging circuit to the charging pile, and the flexibility of charging.

[0088] According to some embodiments of the present disclosure, the preset charging mode may include: a first charging mode. Among them, the first charging mode may include: charging the first battery pack and the second battery pack in series through the first charging port. One implementation manner of step S103 may be:

[0089] When the target charging port includes a first charging port and the maximum output voltage included in the charging capability information is greater than or equal to the battery voltage of the power battery, the first charging mode is taken as the target charging mode.

[0090] Exemplarily, if the first charging port is connected to the target charging pile, the charging handshake confirmation between the controller and the target charging pile is successful, and the maximum output voltage of the target charging pile is greater than or equal to the battery voltage of the power battery, then the first charging mode can be taken as the target charging mode. Wherein, the target charging pile is the charging pile connected to the first charging port through a charging gun, and the battery voltage of the power battery may include the total voltage after the first battery pack and the second battery pack are connected in series.

[0091] According to some other embodiments of the present disclosure, the preset charging mode may include: a second charging mode, and the second charging mode may include: boosting the direct current input through the first charging port by a transistor component, and using the boosted direct current to charge the first battery pack and the second battery pack in series. Another implementation manner of step S103 may be:

[0092] When the target charging port includes a first charging port and the maximum output voltage included in the charging capability information is less than the battery voltage of the power battery, the second charging mode is taken as the target charging mode.

[0093] Exemplarily, if the first charging port is connected to the target charging pile, the charging handshake confirmation between the controller and the target charging pile is successful, and the maximum output voltage of the target charging pile is less than the battery voltage of the power battery, then the second charging mode can be taken as the target charging mode. Wherein, the target charging pile is the charging pile connected to the first charging port through a charging gun.

[0094] According to some embodiments of the present disclosure, the preset charging mode may include: a third charging mode. The third charging mode may include: charging the first battery pack and the second battery pack in series through the second charging port. Another implementation manner of step S103 may be:

[0095] When the target charging port includes a second charging port and the maximum output voltage included in the charging capability information is greater than or equal to the battery voltage of the power battery, the third charging mode is taken as the target charging mode.

[0096] Exemplarily, if the second charging port is connected to the target charging pile, the charging handshake confirmation between the controller and the target charging pile is successful, and the maximum output voltage of the target charging pile is greater than or equal to the battery voltage of the power battery, then the third charging mode can be taken as the target charging mode. Wherein, the target charging pile is the charging pile connected to the second charging port through a charging gun.

[0097] According to some other embodiments of the present disclosure, the preset charging mode may include: a fourth charging mode. The fourth charging mode may include: charging the first battery pack and the second battery pack in parallel through the second charging port. Another implementation manner of step S103 may be:

[0098] When the target charging port includes the second charging port and the maximum output voltage included in the charging capacity information is less than the battery voltage of the power battery, the fourth charging mode is used as the target charging mode.

[0099] Exemplarily, if the second charging port is connected to the target charging pile, the charging handshake confirmation between the controller and the target charging pile is successful, and the maximum output voltage of the target charging pile is less than the battery voltage of the power battery, then the fourth charging mode can be used as the target charging mode. Wherein, the target charging pile is a charging pile connected to the second charging port through a charging gun.

[0100] According to some other embodiments of the present disclosure, the preset charging mode may include: a fifth charging mode. The fifth charging mode may include: charging the first battery pack and the second battery pack in series through the first charging port and the second charging port at the same time. Another implementation manner of step S103 may be:

[0101] When the target charging port includes the first charging port and the second charging port, and the first maximum output voltage and the second maximum output voltage included in the charging capacity information are both greater than or equal to the battery voltage of the power battery, the fifth charging mode is used as the target charging mode. The first maximum output voltage is the maximum output voltage of the target charging pile connected to the first charging port, and the second maximum output voltage is the maximum output voltage of the target charging pile connected to the second charging port.

[0102] Exemplarily, if the following conditions are met: 1) The first charging port is connected to the target charging pile, and the charging handshake confirmation between the controller and the target charging pile is successful; 2) The second charging port is connected to the target charging pile, and the charging handshake confirmation between the controller and the target charging pile is successful; 3) The maximum output voltage of the target charging pile connected to the first charging port is greater than or equal to the battery voltage of the power battery; 4) The maximum output voltage of the target charging pile connected to the second charging port is greater than or equal to the battery voltage of the power battery. Then the fourth charging mode can be used as the target charging mode. Wherein, the target charging pile includes: a charging pile connected to the first charging port through a charging gun and a charging pile connected to the second charging port through a charging gun.

[0103] According to some other embodiments of the present disclosure, the preset charging mode may include: a sixth charging mode. The sixth charging mode may include: charging the first battery pack through the first charging port and charging the second battery pack through the second charging port. Another implementation manner of step S103 may be:

[0104] When the target charging port includes a first charging port and a second charging port, and at least one of the first maximum output voltage and the second maximum output voltage included in the charging capacity information is less than the battery voltage of the power battery, the sixth charging mode is used as the target charging mode.

[0105] Exemplarily, if the following conditions are met: 1) The first charging port is connected to the target charging pile, and the charging handshake confirmation between the controller and the target charging pile is successful; 2) The second charging port is connected to the target charging pile, and the charging handshake confirmation between the controller and the target charging pile is successful; 3) The maximum output voltage of the target charging pile connected to the first charging port is less than the battery voltage of the power battery, and / or the maximum output voltage of the target charging pile connected to the second charging port is less than the battery voltage of the power battery. Then the fourth charging mode can be used as the target charging mode. Wherein, the target charging pile includes: the charging pile connected to the first charging port through a charging gun and the charging pile connected to the second charging port through a charging gun.

[0106] 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. The present disclosure first determines the target charging port connected to the charging gun from the first charging port and the second charging port, and obtains the charging capacity information of the target charging pile connected to the target charging port through the charging gun. Then, according to the target charging port and the charging capacity information, the target charging mode is determined from multiple preset charging modes, and the switch assembly is controlled according to the target charging mode to charge the power battery. The present disclosure determines the corresponding target charging mode by obtaining the target charging port connected to the charging gun and the charging capacity information of the target charging pile connected to the target charging port through the charging gun, and charges the power battery according to the target charging mode. For different charging ports and the output voltages of different charging piles, corresponding charging modes can be adapted, so as to be compatible with charging piles of different voltages, improving the adaptability of the charging circuit to the charging pile and the flexibility of charging.

[0107] Figure 3 is a schematic diagram of a charging system shown according to an exemplary embodiment, as Figure 3 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 used for:

[0108] Determine the target charging port connected to the charging gun from the first charging port 2011 and the second charging port 2012.

[0109] Determine the target charging mode from multiple preset charging modes according to the charging capacity information of the target charging pile and the target charging port. Wherein, the target charging pile is the charging pile connected to the target charging port through the charging gun.

[0110] Control the switch assembly 2014 according to the target charging mode to charge the power battery 2013.

[0111] For example, the controller 202 can periodically inspect the status of the charging system, determine whether the first charging port 2011 and the second charging port 2012 are connected to the charging gun, and can determine whether the first charging port 2011 and the second charging port 2012 have completed the charging handshake confirmation with the target charging pile. In some embodiments, the charging port that is connected to the charging gun and has successfully completed the charging handshake confirmation with the target charging pile among the first charging port 2011 and the second charging port 2012 can be used as the target charging port. For example, if the first charging port 2011 is connected to the charging gun and has successfully completed the charging handshake confirmation with the target charging pile, and the second charging port 2012 is not connected to the charging gun, then the first charging port 2011 can be used as the target charging port. If the first charging port 2011 is connected to the charging gun and has successfully completed the charging handshake confirmation with the target charging pile, and the second charging port 2012 is connected to the charging gun and has successfully completed the charging handshake confirmation with the target charging pile, then the first charging port 2011 and the second charging port 2012 can be used as the target charging ports.

[0112] After determining the target charging port, the controller 202 can obtain the charging capacity information of the target charging pile connected to the target charging port through the charging gun. Wherein, the charging capacity information can characterize the maximum output capacity of the target charging pile, and the charging capacity information can include, for example, the maximum output voltage of the target charging pile. Different target charging ports and charging capacity information of the target charging pile correspond to different charging modes. Among them, the states of the switches in the switch assembly 2014 corresponding to each preset charging mode are different, and different charging modes can be realized by controlling the switch assembly 2014.

[0113] In some other embodiments, the controller 202 can judge the magnitude relationship between the maximum output voltage of the target charging pile included in the charging capacity information and the battery voltage of the power battery 2013, and determine the appropriate target charging mode from multiple preset charging modes according to the target charging pile and this magnitude relationship, and then control the switch assembly 2014 according to the states of the switches in the switch assembly 2014 indicated by the target charging mode, so as to charge the power battery 2013 according to the target charging mode.

[0114] In some other embodiments, the controller 202 may, when the waiting duration after obtaining the charging capacity information reaches a preset time threshold, determine a target charging mode from multiple preset charging modes according to the target charging port and the charging capacity information. By way of example, after obtaining the charging capacity information, the controller may control the target timer corresponding to the target charging port to start timing. When the target timer reaches the preset time threshold, the target charging mode is determined from multiple preset charging modes according to the charging capacity information of the target charging pile and the target charging port. Among them, the preset time threshold may be comprehensively obtained based on the communication time required after receiving the charging capacity information, the arbitration time required for the charging mode, the execution time of the target charging mode, etc. The preset time threshold needs to ensure that the communication between the vehicle and the target charging pile does not time out. When there are multiple target timers, the target charging mode may be determined from multiple preset charging modes according to the charging capacity information of the target charging pile and the target charging port when any one of the target timers reaches the preset time threshold.

[0115] Taking the target charging port including the first charging port 2011 and the second charging port 2012 as an example, the target timer includes the first timer corresponding to the first charging port 2011 and the second timer corresponding to the second charging port 2012. The controller 202 may, when the first timer or the second timer reaches the preset time threshold, determine the target charging mode from multiple preset charging modes according to the target charging port and the charging capacity information. In this way, by setting the preset time threshold, the controller can receive the gun connection state, the charging pile capacity, the charging circuit state, etc. within the timing interval corresponding to the preset time threshold, and then determine and execute the target charging mode after reaching the preset time threshold, which can be compatible with different gun plugging and unplugging conditions and communication durations, and ensure the smoothness of charging entry and charging mode switching.

[0116] Figure 4 is a schematic diagram of a charging circuit shown according to an exemplary embodiment, as Figure 4 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.

[0117] 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.

[0118] 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.

[0119] Figure 5 is a schematic diagram of another charging circuit shown according to an exemplary embodiment, as Figure 5 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.

[0120] 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.

[0121] 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.

[0122] In some embodiments, the controller 202 may control the first switch S1, the second switch S2, and the seventh switch S7 to be closed, and the third switch S3, the fourth switch S4, the fifth switch S5, and the sixth switch S6 to be opened. The first transistor assembly V1 is turned on, and the second transistor assembly V2 is turned off, so that the target charging pile can charge the first battery pack 2013a and the second battery pack 2013b in series through the first charging port 2011, thereby implementing the first charging mode.

[0123] In some other embodiments, the controller 202 may control the first switch S1, the second switch S2, and the seventh switch S7 to be closed, and the third switch S3, the fourth switch S4, the fifth switch S5, and the sixth switch S6 to be opened, and control the first transistor assembly V1 and the second transistor assembly V2 to be turned on in sequence according to a preset period. For example, the following steps may be executed according to a preset period: control the second transistor assembly V2 to be turned on and control the first transistor assembly V1 to be turned off simultaneously to charge the inductor assembly L, and then control the second transistor assembly V2 to be turned off and control the first transistor assembly V1 to be turned on to discharge the inductor assembly L. In this way, when the maximum output voltage of the target charging pile is less than the battery voltage of the power battery 2013, the direct current input through the first charging port 2011 can be boosted by the transistor assembly, and the boosted direct current is used to charge the first battery pack 2013a and the second battery pack 2013b in series, thereby implementing the second charging mode.

[0124] In some other embodiments, the controller 202 may control the fourth switch S4, the fifth switch S5, and the seventh switch S7 to be closed, and the first switch S1, the second switch S2, the third switch S3, and the sixth switch S6 to be opened. The first transistor assembly V1 and the second transistor assembly V2 are turned off, so that the target charging pile can charge the first battery pack 2013a and the second battery pack 2013b in series through the second charging port 2012, thereby implementing the third charging mode.

[0125] In some other embodiments, the controller 202 may control the third switch S3, the fourth switch S4, the fifth switch S5, and the sixth switch S6 to be closed, and the first switch S1, the second switch S2, and the seventh switch S7 to be opened. The first transistor assembly V1 is turned on, and the second transistor assembly V2 is turned off, so that the target charging pile can charge the first battery pack 2013a and the second battery pack 2013b in parallel through the second charging port 2012, thereby implementing the fourth charging mode.

[0126] In some other embodiments, the controller 202 may control the first switch S1, the second switch S2, the fourth switch S4, the fifth switch S5, and the seventh switch S7 to be closed, the third switch S3 and the sixth switch S6 to be opened, the first transistor assembly V1 to be turned on, and the second transistor assembly V2 to be turned off, so that the target charging pile can charge the first battery pack 2013a and the second battery pack 2013b in series through the first charging port 2011 and the second charging port 2012 at the same time, thereby implementing the fifth charging mode.

[0127] In some other embodiments, the controller 202 may control the first switch S1, the second switch S2, the third switch S3, the fourth switch S4, the fifth switch S5, and the sixth switch S6 to be closed, the seventh switch S7 to be opened, the first transistor assembly V1 to be turned on, and the second transistor assembly V2 to be turned off, so that the target charging pile connected to the first charging port 2011 charges the first battery pack 2013a through the first charging port 2011, and the target charging pile connected to the second charging port 2012 charges the second battery pack 2013b through the second charging port 2012, thereby implementing the sixth charging mode.

[0128] In summary, the present disclosure first determines the target charging port connected to the charging gun from the first charging port and the second charging port, and determines the 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 the charging pile connected to the target charging port through the charging gun. Then, the switch assembly is controlled according to the target charging mode to charge the power battery. The present disclosure determines the corresponding target charging mode according to the target charging port connected to the charging gun and the charging capacity information of the target charging pile connected to the target charging port through the charging gun, and charges the power battery according to the target charging mode. For different charging ports and the output voltages of different charging piles, corresponding charging modes can be adapted, so as to be compatible with charging piles of different voltages, improve the adaptability of the charging circuit to the charging piles, and enhance the flexibility of charging.

[0129] The following gives a specific embodiment, which is based on the principle of the Figure 6 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 the appropriate charging circuit.

[0130] Figure 7It is a specific embodiment of a reused vehicle drive motor. Figure 7 The dual-gun charging system in Figure 7 includes: Package 1, Package 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, and Capacitor C2. The first charging port circuit 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, and Capacitor C2. The second charging port circuit includes: the second charging port, Switch K3, Switch K4, Switch K5, and Switch K10.

[0131] Figure 8 It is a schematic flowchart of a charging control method shown according to an embodiment of the present disclosure. As Figure 8 shown, the control logic steps of the specific method are as follows:

[0132] The entire charging control unit continuously monitors the connection signal status of the two charging port guns. When the gun signal status changes, charging mode control is performed.

[0133] Step 1: The control module inspects the charging system status. If it is determined that the first charging port gun is connected and charging handshake confirmation is completed, proceed to Step 2; if it is determined that the second charging port gun is connected and charging handshake confirmation is completed, proceed to Step 4.

[0134] Step 2: The control module further interacts with the first charging pile. After completing the confirmation of the maximum output capacity of the first charging pile, proceed to Step 3.

[0135] Step 3: Start timing of Timer T1 in the control mode and proceed to Step 6.

[0136] Step 4: The control module further interacts with the second charging pile. After completing the confirmation of the maximum output capacity of the second charging pile, proceed to Step 5.

[0137] Step 5: Start timing of Timer T2 in the control mode and proceed to Step 6.

[0138] Step 6: The control module determines that if T1 or T2 reaches the timing waiting threshold T, proceed to Step 7. The timing waiting threshold T is comprehensively obtained based on the communication time required after receiving the maximum output capacity of the charging pile, the arbitration time required for the charging mode, and the target charging mode execution time, etc. This time threshold needs to ensure that the communication between the vehicle end and the connected charging pile does not time out.

[0139] Step 7: The control module arbitrates the target charging mode based on the current charging port gun connection status, charging pile capabilities, etc.; at the same time, it arbitrates the process of entering the target mode according to the current loop status of the first and second charging ports. After the arbitration is completed, it directly enters the target charging mode or jumps from the current mode to the target charging mode, and proceeds to Step 8.

[0140] The arbitration of the specific target charging mode is as follows:

[0141] If all of the following conditions are met, the arbitration target charging mode is Charging Mode 1, single-gun non-boost full-pack charging at the first charging port:

[0142] ① The gun at the first charging port is connected;

[0143] ② The maximum output voltage of the first charging pile is greater than the battery pack voltage;

[0144] ③ There is no confirmation result for the maximum output capacity of the second charging pile.

[0145] Among them, the lack of confirmation result for the maximum output capacity of the second charging pile may be because the charging gun of the second charging pile is not connected to the second charging port, or the second charging pile connected to the second charging port has a fault, or the charging gun of the second charging pile connected to the second charging pile has a fault.

[0146] As Figure 9 shown, when the target charging mode is Charging Mode 1, control switches K1, K2, K5, K6, K9 are closed, and switch tubes VT1 / VT3 / VT5 are conducting.

[0147] If all of the following conditions are met, the arbitration target charging mode is Charging Mode 2, single-gun boost full-pack charging at the first charging port:

[0148] ① The gun at the first charging port is connected;

[0149] ② The maximum output voltage of the first charging pile is less than the battery pack voltage;

[0150] ③ There is no confirmation result for the maximum output capacity of the second charging pile.

[0151] As Figure 10 shown, when the target charging mode is Charging Mode 2, control switches K1, K2, K5, K6, K9 are closed. At the same time, control switch tubes VT2 / VT4 / VT6 are conducting and VT1 / VT3 / VT5 are turned off to charge the inductor, and then control switch tubes VT2 / VT4 / VT6 are turned off and VT1 / VT3 / VT5 are conducting to discharge the inductor, that is, using the motor boost technology to achieve full-pack charging.

[0152] If all of the following conditions are met, the arbitration target charging mode is Charging Mode 3, single-gun direct connection full-pack charging at the second charging port:

[0153] ① The second charging port gun is connected;

[0154] ② The maximum output voltage of the second charging pile is greater than the battery pack voltage;

[0155] ③ There is no confirmation result for the maximum output capacity of the first charging pile.

[0156] Among them, the reason why there is no confirmation result for the maximum output capacity of the first charging pile may be that the charging gun of the first charging pile is not connected to the first charging port, or the first charging pile connected to the second charging port fails, or the charging gun of the first charging pile connected to the first charging pile fails.

[0157] As Figure 11 shown, when the target charging mode is charging mode 3, the control switches K3, K4, K5, K6, and K9 are closed.

[0158] When all of the following conditions are met, the arbitration target charging mode is charging mode 4, and the second charging port single-gun half-pack parallel charging:

[0159] ① The second charging port gun is connected;

[0160] ② The maximum output voltage of the second charging pile is less than the battery pack voltage;

[0161] ③ There is no confirmation result for the maximum output capacity of the first charging pile.

[0162] As Figure 12 shown, when the target charging mode is charging mode 4, the control switches K3, K4, K9, K10, K6, and K7 are closed, the switch K5 is opened, and the switching tubes VT1 / VT3 / VT5 are turned on, that is, control packet 1 and packet 2 are charged in parallel.

[0163] When all of the following conditions are met, the arbitration target charging mode is charging mode 5, and the double-gun full-pack charging:

[0164] ① The first charging port gun is connected;

[0165] ② The second charging port gun is connected;

[0166] ③ The maximum output voltage of the first charging pile is greater than the battery pack voltage;

[0167] ④ The maximum output voltage of the second charging pile is greater than the battery pack voltage.

[0168] As Figure 13 shown, when the target charging mode is charging mode 5, the control switches K1, K2, K3, K4, K5, K6, and K9 are closed, and the switching tubes VT1 / VT3 / VT5 are turned on, that is, the first charging port circuit enters full-pack charging, and the second charging port circuit also enters full-pack charging.

[0169] When all of the following conditions are met, the arbitration target charging mode is charging mode 6, and dual-gun independent semi-pack charging:

[0170] ① The first charging port gun is connected;

[0171] ② The second charging port gun is connected;

[0172] ③ The maximum output voltage of either the first or the second charging pile is less than the battery pack voltage.

[0173] As Figure 14 shown, when the target charging mode is charging mode 6, control switches K1, K2, K3, K4, K7, K6, K9, and K10 are closed, and switch K5 is open, that is, control the first charging port circuit to charge pack 2 and the second charging port circuit to charge pack 1.

[0174] The arbitration of the specific target mode entry process is as follows:

[0175] When one of the following conditions is met, the arbitration result is to directly enter the target charging mode:

[0176] ① The target charging mode is charging mode 1 or 2, and the first charging port circuit is in the charging handshake stage;

[0177] ② The target charging mode is charging mode 3 or 4, and the second charging port circuit is in the charging handshake stage;

[0178] ③ The target charging mode is charging mode 5 or 6, and both the first and second charging port circuits are in the charging handshake stage;

[0179] When one of the following conditions is met, the arbitration result is to jump from the current mode to the target charging mode, that is, first control the current charging circuit to jump to the target charging circuit and update the charging demand, and then execute the target charging mode:

[0180] ① The target charging mode is 1, and the first charging port circuit is charging in charging mode 5;

[0181] ② The target charging mode is 1, and the first charging port circuit is charging in charging mode 6;

[0182] ③ The target charging mode is 2, and the first charging port circuit is charging in charging mode 6;

[0183] ④ The target charging mode is 3, and the second charging port circuit is charging in charging mode 5;

[0184] ⑤ The target charging mode is 3, and the second charging port circuit is charging in charging mode 6;

[0185] ⑥ The target charging mode is 4, and the first charging port circuit is charging in charging mode 6;

[0186] ⑦The target charging mode is 5, and the first charging port circuit is in the charging mode 1 for charging;

[0187] ⑧The target charging mode is 5, and the second charging port circuit is in the charging mode 3 for charging;

[0188] ⑨The target charging mode is 6, and the first charging port circuit is in the charging mode 1 for charging;

[0189] ⑩The target charging mode is 6, and the first charging port circuit is in the charging mode 2 for charging;

[0190] The target charging mode is 6, and the second charging port circuit is in the charging mode 3 for charging;

[0191] The target charging mode is 6, and the second charging port circuit is in the charging mode 4 for charging;

[0192] Step 8: The control module executes the target charging mode arbitrated in step 7 for charging, and jumps back to step 7 to inspect the charging mode arbitration status, that is, when a new arbitration result is generated in step 7, step 8 needs to execute according to the result and continue to jump to step 7 for inspection.

[0193] The above control module can be a controller, or multiple controllers can communicate with each other to jointly complete the above control steps.

[0194] Through the above control method, when the high-voltage and low-voltage DC charging piles are connected with single gun or double guns, the battery pack can be controlled to enter different charging modes to successfully charge, 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.

[0195] Through the above control method, the control module judges the gun connection status, charging pile capacity, charging circuit status, etc. received within the preset interval, and then executes the target charging mode after charging mode arbitration, ensuring the success of charging and the smoothness of charging mode jump, and solving the problem of charging failure or unexpected charging termination caused by the uncontrollable communication duration of the plugging and unplugging gun working conditions and the charging pile.

[0196] Figure 15 It is a block diagram of a controller shown according to an exemplary embodiment. As Figure 15 shown, 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.

[0197] 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-mentioned 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 disc. The multimedia component 2023 may include a screen and an audio component. Among them, the screen can 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 for receiving external audio signals. The received audio signal can 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-mentioned other interface modules can be a keyboard, a mouse, buttons, etc. These buttons can 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.

[0198] In an exemplary embodiment, the controller 202 can be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components, and is used to execute the above-mentioned charging control method.

[0199] 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 can be the above-mentioned memory 2022 including program instructions, and the above-mentioned program instructions can be executed by the processor 2021 of the controller 202 to complete the above-mentioned charging control method.

[0200] Figure 16 is a block diagram of a vehicle shown according to an exemplary embodiment, as Figure 16 shown, a controller 202 is provided on the vehicle 300.

[0201] Figure 17 is a block diagram of another vehicle shown according to an exemplary embodiment, as Figure 17 shown, a charging system 200 is provided on the vehicle 300.

[0202] The preferred embodiments of the present disclosure have been described in detail above with reference to 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.

[0203] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0204] 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: Determine a target charging port connected to a charging gun from a first charging port and a 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; wherein, the target charging pile is the charging pile connected to the target charging port through the charging gun; Control a switch component according to the target charging mode to charge a power battery.

2. The method according to claim 1, characterized in that, the determining 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 includes: When the target charging port includes the first charging port and the maximum output voltage included in the charging capacity information is greater than or equal to the battery voltage of the power battery, taking the first charging mode as the target charging mode; wherein, the preset charging modes include: a first charging mode; the first charging mode includes: charging the power battery through the first charging port.

3. The method according to claim 1, characterized in that, the determining 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 includes: When the target charging port includes the first charging port and the maximum output voltage included in the charging capacity information is less than the battery voltage of the power battery, taking the second charging mode as the target charging mode; wherein, the preset charging modes include: a second charging mode; the second charging mode includes: charging the power battery after boosting the current input to the first charging port.

4. The method according to claim 1, characterized in that, the determining 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 includes: When the target charging port includes the second charging port and the maximum output voltage included in the charging capacity information is greater than or equal to the battery voltage of the power battery, taking the third charging mode as the target charging mode; the preset charging modes include: a third charging mode; the third charging mode includes: charging the power battery through the second charging port.

5. The method according to claim 1, characterized in that, the determining 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 includes: When the target charging port includes the second charging port and the maximum output voltage included in the charging capacity information is less than the battery voltage of the power battery, taking the fourth charging mode as the target charging mode; the preset charging modes include: a fourth charging mode; the fourth charging mode includes: charging a first battery pack and a second battery pack in parallel through the second charging port, wherein, 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. The method according to claim 1, characterized in that, Determining 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 includes: When the target charging port includes the first charging port and the second charging port, and both the first maximum output voltage and the second maximum output voltage included in the charging capacity information are greater than or equal to the battery voltage of the power battery, taking the fifth charging mode as the target charging mode; the first maximum output voltage is the maximum output voltage of the target charging pile connected to the first charging port, and the second maximum output voltage is the maximum output voltage of the target charging pile connected to the second charging port; the preset charging modes include: the fifth charging mode; the fifth charging mode includes: charging the power battery through the first charging port and the second charging port simultaneously.

7. The method according to claim 1, wherein, Determining 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 includes: When the target charging port includes the first charging port and the second charging port, and at least one of the first maximum output voltage and the second maximum output voltage included in the charging capacity information is less than the battery voltage of the power battery, taking the sixth charging mode as the target charging mode; the preset charging modes include: the sixth charging mode; the sixth charging mode includes: charging the second battery pack through the first charging port and charging the first battery pack through the second charging port; wherein, 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.

8. The method according to any one of claims 1-7, wherein, The method further includes: Performing a charging handshake confirmation with the target charging pile; When the charging handshake confirmation is successful, obtaining the charging capacity information of the target charging pile.

9. The method according to claim 8, wherein, Determining 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 includes: When the waiting duration after obtaining the charging capacity information reaches a preset time threshold, determining 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.

10. A charging system, wherein, 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: Determine a target charging port connected to the 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; wherein, the target charging pile is the 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.

11. The system according to claim 10, wherein, 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.

12. The system according to claim 11, wherein, the transistor assembly includes: a first transistor assembly, a second transistor assembly, an inductor assembly, a first capacitor and a second capacitor; 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 also 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; the first end of the first capacitor is connected to the second end of the first transistor assembly, and the second end of the first capacitor is connected to the second end of the second transistor assembly; the first end of the second capacitor is connected to the first end of the inductor assembly, and the second end of the second capacitor is connected to the second end of the second transistor assembly.

13. The system according to claim 12, wherein, the controller is specifically configured to: 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 that the target charging pile charges the first battery pack and the second battery pack in series through the first charging port.

14. The system according to claim 12, wherein, The controller is specifically configured to: Control the first switch, the second switch, and the seventh switch to close, and the third switch, the fourth switch, the fifth switch, and the sixth switch to open, and control the first transistor assembly and the second transistor assembly to conduct in sequence according to a preset period, so as to boost the direct current input through the first charging port by means of the transistor assembly, and use the boosted direct current to charge the first battery pack and the second battery pack in series.

15. The system according to claim 12, wherein, The controller is specifically configured to: Control the fourth switch, the fifth switch, and the seventh switch to close, and the first switch, the second switch, the third switch, and the sixth switch to open, and disconnect the first transistor assembly and the second transistor assembly, so that the target charging pile charges the first battery pack and the second battery pack in series through the second charging port.

16. The system according to claim 12, wherein, The controller is specifically configured to: 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, and conduct the first transistor assembly and disconnect the second transistor assembly, so that the target charging pile charges the first battery pack and the second battery pack in parallel through the second charging port.

17. The system according to claim 12, wherein, The controller is specifically configured to: Control the first switch, the second switch, the fourth switch, the fifth switch, and the seventh switch to close, and the third switch and the sixth switch to open, and conduct the first transistor assembly and disconnect the second transistor assembly, so that the target charging pile charges the first battery pack and the second battery pack in series through the first charging port and the second charging port at the same time.

18. The system according to claim 12, wherein, The controller is specifically configured to: Control the first switch, the second switch, the third switch, the fourth switch, the fifth switch, and the sixth switch to close, and the seventh switch to open, and conduct the first transistor assembly and disconnect the second transistor assembly, so that the target charging pile charges the first battery pack through the first charging port and charges the second battery pack through the second charging port.

19. A controller, wherein, Comprising: 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 1-9.

20. A vehicle, wherein, The vehicle includes the controller according to claim 19.

21. A vehicle, wherein, The vehicle includes the charging system according to any one of claims 10-18.

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