Charging Method, System, Device, Storage Medium and Program Product

Abstract

The present application discloses a charging method, system, device, storage medium and program product. Among them, the method includes: determining an initial charging mode of the vehicle based on a first real-time voltage of the vehicle and a first voltage threshold; in the initial charging mode, obtaining a second real-time voltage of the vehicle and a maximum output voltage of a charging device; based on the second real-time voltage and the maximum output voltage, switching the charging mode of the vehicle between a direct charging mode and a boosting mode. By determining an initial charging mode for the vehicle through the real-time voltage of the vehicle and the voltage threshold of the vehicle, and then switching the charging mode of the vehicle according to the real-time voltage of the vehicle and the maximum output voltage of the charging device, the charging efficiency of the vehicle is improved.

Description

Technical Field

[0001] This application relates to the technical field of vehicle charging, and in particular, to a charging method, system, device, storage medium, and program product. Background Art

[0002] The solution of related technologies to the problem of electric vehicles charging on charging piles with different voltage levels such as 500V / 750V / 1000V is to judge based on the actual output voltage, the maximum output voltage of the charging pile, and the maximum charging voltage of the electric vehicle battery, and determine the charging mode of the vehicle according to the judgment result. Although this technically solves the problem that electric vehicles with high-voltage platforms can charge on charging piles with different voltage levels, there is still the problem of low charging efficiency. Summary of the Invention

[0003] In view of this, at least one charging method, system, device, storage medium, and program product are provided in the embodiments of this application.

[0004] The technical solutions of the embodiments of this application are implemented as follows:

[0005] In a first aspect, an embodiment of this application provides a charging method, the method including: determining an initial charging mode of the vehicle based on a first real-time voltage of the vehicle and a first voltage threshold; in the initial charging mode, obtaining a second real-time voltage of the vehicle and a maximum output voltage of a charging device; based on the second real-time voltage and the maximum output voltage, switching the charging mode of the vehicle between a direct charging mode and a boosting mode.

[0006] In a second aspect, an embodiment of this application provides a charging system, the system including: a determining module, configured to determine an initial charging mode of the vehicle based on a first real-time voltage of the vehicle and a first voltage threshold; an obtaining module, configured to obtain a second real-time voltage of the vehicle and a maximum output voltage of a charging device in the initial charging mode; a switching module, configured to switch the charging mode of the vehicle between a direct charging mode and a boosting mode based on the second real-time voltage and the maximum output voltage.

[0007] In a third aspect, an embodiment of this application provides an electronic device, including a memory and a processor, where the memory stores a computer program that can run on the processor, and when the processor executes the program, it implements some or all of the steps in the above method.

[0008] In a fourth aspect, an embodiment of this application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements some or all of the steps in the above method.

[0009] Fifth aspect, an embodiment of the present application provides a computer program product, including a computer program or instructions, which, when executed by a processor, implement some or all of the steps in the above method.

[0010] In the embodiment of the present application, the initial charging mode of the vehicle can be determined by the first real-time voltage of the vehicle and the first voltage threshold of the vehicle, and then the charging mode of the vehicle is switched between the boost mode and the direct charging mode according to the second real-time voltage of the vehicle and the maximum output voltage of the charging device, improving the charging efficiency of the vehicle on charging piles of different specifications.

[0011] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, rather than limiting the technical solution of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings here are incorporated into the specification and form a part of this specification. These drawings show embodiments consistent with the present application and, together with the specification, are used to explain the technical solution of the present application.

[0013] Figure 1 Schematic diagram of the implementation process of a charging method provided by an embodiment of the present application;

[0014] Figure 2 Schematic diagram of the implementation process of a charging method provided by an embodiment of the present application;

[0015] Figure 3 Schematic diagram of the implementation process of a charging method provided by an embodiment of the present application;

[0016] Figure 4 Schematic diagram of the implementation process of a charging method provided by an embodiment of the present application;

[0017] Figure 5 Schematic diagram of the implementation process of a charging method provided by an embodiment of the present application;

[0018] Figure 6 Schematic diagram of the implementation process of a charging method provided by an embodiment of the present application;

[0019] Figure 7 Schematic diagram of the structure of a charging device provided by an embodiment of the present application;

[0020] Figure 8 Schematic diagram of the implementation process of a charging method provided by an embodiment of the present application;

[0021] Figure 9 Schematic diagram of the implementation process of a charging method provided by an embodiment of the present application;

[0022] Figure 10Schematic diagram of a charging device provided by an embodiment of the present application;

[0023] Figure 11 Schematic diagram of the implementation process of a charging method provided by an embodiment of the present application;

[0024] Figure 12 Schematic diagram of the implementation process of a charging method provided by an embodiment of the present application;

[0025] Figure 13 Schematic diagram of the implementation process of an adaptive DC charging method provided by an embodiment of the present application;

[0026] Figure 14 Schematic diagram of the implementation process of a switching method provided by an embodiment of the present application;

[0027] Figure 15 Schematic diagram of the implementation process of a switching method provided by an embodiment of the present application;

[0028] Figure 16 Schematic diagram of the implementation process of an adaptive DC charging method provided by an embodiment of the present application;

[0029] Figure 17 Schematic diagram of the composition structure of a charging system provided by an embodiment of the present application;

[0030] Figure 18 Schematic diagram of the hardware entity of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0031] The embodiments of the present application aim to provide a charging method, mainly solving the problem of low charging efficiency caused by determining the vehicle charging mode only according to the maximum charging voltage of the battery and the maximum output voltage of the charging pile in the related art. The present application determines the initial charging mode of the vehicle based on the real-time voltage before vehicle charging and the preset voltage of the vehicle, and then controls the charging mode of the vehicle to switch between the boost mode and the direct charging mode according to the real-time voltage during vehicle charging and the maximum output voltage of the charging device, improving the charging efficiency of the vehicle on charging piles of different specifications.

[0032] Figure 1 Schematic diagram of the implementation process of a charging method provided by an embodiment of the present application, as Figure 1 shown, the method includes the following steps S101 to step S103:

[0033] Step S101, determine the initial charging mode of the vehicle based on the first real-time voltage of the vehicle and the first voltage threshold.

[0034] In some embodiments, the first real-time voltage of the vehicle refers to the current voltage value of the vehicle battery before vehicle charging; the first voltage threshold refers to the minimum voltage value among the maximum output voltages of current charging devices of different specifications, and this minimum voltage value is preset as the first voltage threshold of the vehicle, that is, the first preset voltage value of the vehicle; the initial charging mode of the vehicle may include a first charging mode, a second charging mode, etc.; among them, the first charging mode includes a buck mode and a direct charging mode, and the second charging mode includes a buck mode and a direct charging mode.

[0035] In some embodiments, according to the battery voltage value of the vehicle before vehicle charging and the first preset voltage value of the vehicle, determine that the initial charging mode of the vehicle is the first charging mode or the second charging mode; it can be understood that when the battery voltage value of the vehicle before vehicle charging is greater than or equal to the first preset voltage value of the vehicle, determine that the initial charging mode of the vehicle is the first charging mode; when the battery voltage value of the vehicle before vehicle charging is less than the first preset voltage value of the vehicle, determine that the initial charging mode of the vehicle is the second charging mode; in some other embodiments, it may also be that when the battery voltage value of the vehicle before vehicle charging is greater than or equal to the first preset voltage value of the vehicle, determine that the initial charging mode of the vehicle is the second charging mode; when the battery voltage value of the vehicle before vehicle charging is less than the first preset voltage value of the vehicle, determine that the initial charging mode of the vehicle is the first charging mode.

[0036] Exemplarily, when the battery voltage value of the vehicle before vehicle charging is 400V and the first preset voltage value of the vehicle is 500V, determine that the charging mode of the vehicle is the first charging mode; when the battery voltage value of the vehicle before vehicle charging is 600V and the first preset voltage value of the vehicle is 500V, determine that the charging mode of the vehicle is the second charging mode.

[0037] In some other embodiments, when the battery voltage value of the vehicle before vehicle charging is 400V and the first preset voltage value of the vehicle is 500V, determine that the charging mode of the vehicle is the second charging mode; when the battery voltage value of the vehicle before vehicle charging is 600V and the first preset voltage value of the vehicle is 500V, determine that the charging mode of the vehicle is the second charging mode.

[0038] Step S102, in the initial charging mode, obtain the second real-time voltage of the vehicle and the maximum output voltage of the charging device.

[0039] In some embodiments, the vehicle in the initial charging mode refers to the vehicle in the first charging mode or the second charging mode; the second real-time voltage of the vehicle refers to the current voltage value of the vehicle battery after the vehicle has been charged for a period of time in the first charging mode or the second charging mode; the charging device can be a non-vehicle-mounted charger, an in-vehicle charger, a DC charging pile, an AC charging pile, an AC-DC integrated charging pile, etc.; the maximum output voltage of the charging device refers to the maximum output voltage that the charging device can provide for the vehicle when the vehicle is charged through the charging device.

[0040] In some embodiments, in the initial charging mode, obtain the second real-time voltage of the vehicle and the maximum output voltage of the charging device; it can be understood that after the vehicle is charged for a period of time in the initial charging mode, obtain the current battery voltage value of the vehicle, and according to the message information sent by the charging device, obtain the maximum output voltage of the charging device. Exemplarily, after the vehicle is charged for a period of time in the first charging mode or the second charging mode, obtain the current voltage value of the vehicle and the maximum voltage value that the charging device can provide for vehicle charging.

[0041] Step S103, based on the second real-time voltage and the maximum output voltage, switch the charging mode of the vehicle between the direct charging mode and the boost mode.

[0042] In some embodiments, the direct charging mode means that when the output voltage of the charging device is greater than the current voltage of the vehicle battery, there is no need to adjust the size of the output voltage of the charging device through a voltage adjustment circuit, and the vehicle battery is directly charged by the output voltage of the charging device. Charging the vehicle battery in the direct charging mode can give full play to the charging capabilities of the battery and the charging device. Compared with the boost mode, the charging power is larger and the charging efficiency is higher.

[0043] In some embodiments, the boost mode means that when the output voltage of the charging device is less than the current voltage of the vehicle battery, at this time, a boost circuit is needed to boost the low voltage output by the charging device into a higher voltage for boost charging the vehicle battery; compared with the direct charging mode, in the boost mode, due to the large charging power and high temperature rise, too high temperature will cause the permanent magnet of the motor to demagnetize, resulting in a smaller charging power, and there will be power loss due to the conversion efficiency of the electric drive transformer, resulting in a lower charging efficiency.

[0044] In some embodiments, based on the second real-time voltage and the maximum output voltage, switch the charging mode of the vehicle between the direct charging mode and the boost mode; it can be understood that according to the voltage value of the vehicle battery after the vehicle is charged for a period of time in the first charging mode or the second charging mode and the maximum output voltage sent by the charging device, switch the charging mode of the vehicle battery between the direct charging mode and the boost mode.

[0045] In some embodiments, when the maximum output voltage of the charging device is greater than the battery voltage value of the vehicle after charging for a period of time in the first charging mode or the second charging mode, the charging mode of the vehicle is switched to the direct charging mode; when the maximum output voltage of the charging device is less than or equal to the battery voltage value of the vehicle after charging for a period of time in the first charging mode or the second charging mode, the charging mode of the vehicle is switched to the boost mode.

[0046] Exemplarily, when the battery voltage value of the vehicle is 400V after charging for a period of time in the first charging mode or the second charging mode and the maximum output voltage of the charging device is 500V, the charging mode of the vehicle is switched to the direct charging mode; when the battery voltage value of the vehicle is 550V after charging for a period of time in the first charging mode or the second charging mode and the maximum output voltage of the charging device is 500V, the charging mode of the vehicle battery is switched to the boost mode.

[0047] In some other embodiments, the charging mode of the vehicle battery can also be switched between the direct charging mode and the boost mode according to the second real-time voltage of the vehicle, the first voltage threshold, the second voltage threshold, and the maximum output voltage of the charging device, where the second voltage threshold refers to the maximum output voltage value among the maximum output voltages of different specifications of charging devices except the smallest maximum output voltage, that is, the second preset voltage value of the vehicle, and the second voltage threshold is greater than the first voltage threshold. It can be understood that when the maximum output voltage of the charging device is equal to the first preset voltage value of the vehicle, the charging mode of the vehicle battery is switched to the boost mode; when the maximum output voltage of the charging device is equal to the second preset voltage value of the vehicle and the battery voltage value of the vehicle is greater than or equal to the second preset voltage value after charging for a period of time in the first charging mode or the second charging mode, the charging mode of the vehicle battery is switched to the boost mode; when the maximum output voltage of the charging device is equal to the second voltage threshold and the battery voltage value of the vehicle is less than the second voltage threshold after charging for a period of time in the first charging mode or the second charging mode, the charging mode of the vehicle battery is switched from the boost mode to the direct charging mode.

[0048] Exemplarily, when the maximum output voltage of the charging device is equal to 500V and the first voltage threshold is equal to 500V, the charging mode of the vehicle battery is switched to the boost mode; when the maximum output voltage of the charging device is equal to 750V, the second voltage threshold is equal to 750V, and the voltage value of the vehicle battery is equal to 800V after the vehicle is charged in the first charging mode or the second charging mode for a period of time, the charging mode of the vehicle battery is switched to the boost mode; when the maximum output voltage of the charging device is equal to 750V, the second preset voltage value of the vehicle is equal to 750V, and the voltage value of the vehicle battery is equal to 500V after the vehicle is charged in the first charging mode or the second charging mode for a period of time, the charging mode of the vehicle battery is switched from the boost mode to the direct charging mode.

[0049] In the embodiments of the present application, the initial charging mode of the vehicle is determined based on the first real-time voltage of the vehicle and the voltage threshold. In the initial charging mode of the vehicle, the second real-time voltage of the vehicle and the maximum output voltage of the charging device are obtained; then, according to the second real-time voltage of the vehicle and the maximum output voltage of the charging device, the charging mode of the vehicle is switched between the boost mode and the direct charging mode, improving the charging efficiency of the vehicle on charging piles of different specifications.

[0050] In some embodiments, the initial charging mode includes a direct charging mode and a boost mode; determining the initial charging mode of the vehicle based on the first real-time voltage of the vehicle and the first voltage threshold includes:

[0051] When the first real-time voltage is less than the first voltage threshold, determining that the initial charging mode is the direct charging mode; when the first real-time voltage is greater than or equal to the first voltage threshold, determining that the initial charging mode is the buck mode.

[0052] In some embodiments, in the buck mode, before the vehicle battery is charged by the charging device, the voltage value before the vehicle battery is charged needs to be stepped down to be lower than the preset voltage value of the vehicle through a buck circuit; the buck mode belongs to a transient working mode, and its working state is not the working state during battery charging. The buck mode is mainly for the case where the output voltage of the charging device is less than the current working voltage of the battery, and the battery voltage needs to be stepped down to achieve handshaking and parameter matching between the vehicle and the charging device. Among them, the handshaking between the vehicle and the charging device means that the vehicle and the charging device communicate to enable information interaction between the vehicle and the charging device; the completion of parameter matching between the vehicle and the charging device means that the voltage value of the vehicle battery is less than the output voltage of the charging device.

[0053] In some embodiments, when the first real-time voltage is less than the first voltage threshold, it is determined that the initial charging mode is the direct charging mode; it can be understood that when the battery voltage value of the vehicle before charging the vehicle battery is less than the first preset voltage value of the vehicle, the initial charging mode of the vehicle battery is determined as the direct charging mode. In the direct charging mode, the output voltage of the charging device does not need to pass through the voltage adjustment circuit and can directly charge the vehicle battery.

[0054] Exemplarily, when the voltage value before charging the vehicle battery is equal to 400V and the preset threshold of the vehicle is equal to 500V, the initial charging mode of the vehicle battery is determined as the direct charging mode, and the vehicle battery is charged through the direct charging mode.

[0055] In some embodiments, when the first real-time voltage is greater than or equal to the first voltage threshold, it is determined that the initial charging mode is the buck mode; it can be understood that when the battery voltage value of the vehicle before charging the vehicle battery is greater than or equal to the first preset voltage value of the vehicle, the initial charging mode of the vehicle battery is determined as the buck mode; at this time, it is necessary to step down the voltage value before charging the vehicle battery through the buck circuit to be lower than the first preset voltage value of the vehicle, and determine the charging mode of the vehicle according to the adjusted battery voltage value of the vehicle and the first preset voltage value of the vehicle.

[0056] In the embodiments of the present application, the initial charging mode of the vehicle is determined by the battery voltage value of the vehicle before charging the vehicle battery and the first preset voltage value of the vehicle. Compared with the related art, when the vehicle battery is at a lower voltage value or the charging device cannot reach its maximum output voltage, only the maximum charging voltage of the vehicle and the maximum output voltage of the charging device are used to determine the vehicle charging mode, which improves the charging efficiency of the vehicle battery.

[0057] Figure 2 The following is a schematic flowchart of the implementation of a charging method provided by the embodiments of the present application, and this method can be executed by the processor of an electronic device. As Figure 2 shown, this method includes the following steps S201 and step S202, which will be described in combination with Figure 2 the steps shown.

[0058] Step S201: Reduce the vehicle voltage based on the buck mode.

[0059] In some embodiments, reducing the vehicle voltage based on the buck mode means reducing the voltage of the vehicle battery through the buck mode; it can be understood that reducing the battery voltage value of the vehicle before charging the vehicle battery through the buck circuit; so that the battery voltage value of the vehicle before charging the vehicle through the charging device is less than the first preset voltage value of the vehicle.

[0060] Exemplarily, if the battery voltage value of the vehicle before charging through the charging device is 550V and the first preset voltage value of the vehicle is 500V, the battery voltage value of the vehicle before charging through the charging device is reduced to below 500V through the buck circuit of the vehicle.

[0061] Step S202, when the vehicle voltage is less than the first voltage threshold, in response to the vehicle and the charging device completing parameter adaptation, switch the charging mode of the vehicle to the boost mode.

[0062] In some embodiments, when the vehicle voltage is less than the first voltage threshold means that the battery voltage value of the vehicle is less than the first preset voltage value of the vehicle after bucking through the buck circuit before charging through the charging device; exemplarily, the battery voltage value of the vehicle after bucking through the buck circuit before charging through the charging device is 400V, and the first preset voltage value of the vehicle is 500V.

[0063] In some embodiments, the parameter adaptation between the vehicle and the charging device refers to the process of adapting the voltage value of the vehicle's battery after bucking through the buck circuit before charging through the charging device to the output voltage of the charging device; in response to the vehicle and the charging device completing parameter adaptation, it can be understood that when the voltage value of the vehicle's battery after bucking through the buck circuit before charging through the charging device is less than the output voltage of the charging device, it indicates that the vehicle and the charging device have completed parameter adaptation.

[0064] Exemplarily, the battery voltage value of the vehicle after bucking through the buck circuit before charging through the charging device is 400V, and the first preset voltage value of the vehicle is 500V. It can be understood that when the battery voltage value of the vehicle after bucking through the buck circuit before charging through the charging device is 400V, which is less than the output voltage of the charging device of 500V, it indicates that the vehicle and the charging device have completed parameter adaptation.

[0065] In some embodiments, when the vehicle voltage is less than the first voltage threshold, in response to the vehicle and the charging device completing parameter adaptation, switch the charging mode of the vehicle to the boost mode; it can be understood that when the vehicle voltage is less than the first voltage threshold means that the battery voltage value of the vehicle is less than the first preset voltage value of the vehicle after bucking through the buck circuit before charging through the charging device. When the voltage value of the vehicle's battery after bucking through the buck circuit before charging through the charging device is less than the output voltage of the charging device, it indicates that the vehicle and the charging device have completed parameter adaptation. In response to the vehicle and the charging device completing parameter adaptation, the charging mode of the vehicle's battery is switched to the boost mode through a switching program, and the vehicle charges the vehicle's battery through the boost mode.

[0066] Exemplarily, when the battery voltage value of the vehicle after step-down by the step-down circuit before the vehicle is charged by the charging device is 400V, which is less than the first preset voltage value of the vehicle of 500V, it is characterized that the vehicle and the charging device have completed parameter adaptation. In response to the vehicle and the charging device having completed parameter adaptation, the charging mode of the vehicle battery is switched to the boost mode according to the switching program.

[0067] Figure 3 The figure is a schematic flowchart of the implementation of a charging method provided by an embodiment of the present application, and this method can be executed by a processor of an electronic device. Based on Figure 1 , Figure 1 In this, step S103 can be updated to step S301 or step S302 or step S303, and the steps shown in Figure 3 will be described.

[0068] Step S301: When the maximum output voltage is equal to the first voltage threshold, maintain the charging mode of the vehicle in the boost mode.

[0069] In some embodiments, when the maximum output voltage is equal to the first voltage threshold, maintain the charging mode of the vehicle in the boost mode; it can be understood that when the maximum output voltage of the charging device is equal to the first preset voltage value of the vehicle, maintain the charging mode of the vehicle in the boost mode and continue to charge the vehicle battery.

[0070] Exemplarily, when the maximum output voltage of the charging device is 500V and the first preset voltage value of the vehicle is 500V, maintain the charging mode of the vehicle battery in the boost mode and continue to charge the vehicle battery through the boost mode.

[0071] Step S302: When the maximum output voltage is equal to the second voltage threshold and the second real-time voltage is greater than or equal to the second voltage threshold, maintain the charging mode of the vehicle in the boost mode.

[0072] In some embodiments, when the maximum output voltage is equal to the second voltage threshold and the second real-time voltage is greater than or equal to the second voltage threshold, maintain the charging mode of the vehicle in the boost mode; it can be understood that when the maximum output voltage of the charging device is equal to the second preset voltage value of the vehicle and the battery voltage value of the vehicle is greater than or equal to the second preset voltage value of the vehicle after the vehicle has charged the vehicle battery through the boost mode for a period of time, continue to charge the vehicle battery through the boost mode of the vehicle.

[0073] Exemplarily, when the maximum output voltage of the charging device is 750V, the second preset voltage of the vehicle is 750V, and the battery voltage value of the vehicle is 800V after the vehicle charges the vehicle battery in the boost mode for a period of time, the charging mode of the vehicle is maintained as the boost mode, and the vehicle battery is continuously charged through the boost mode.

[0074] Step S303: When the maximum output voltage is equal to the second voltage threshold and the second real-time voltage is less than the second voltage threshold, switch the charging mode of the vehicle from the boost mode to the direct charging mode.

[0075] In some embodiments, when the maximum output voltage is equal to the second voltage threshold and the second real-time voltage is less than the second voltage threshold, switch the charging mode of the vehicle from the boost mode to the direct charging mode; it can be understood that when the maximum output voltage of the charging device is equal to the second preset voltage of the vehicle and the battery voltage value of the vehicle is less than the second preset voltage of the vehicle after the vehicle charges the vehicle battery in the boost mode for a period of time, the charging mode of the vehicle is switched from the boost mode to the direct charging mode through the switching program, and the vehicle battery is charged through the direct charging mode.

[0076] Exemplarily, when the maximum output voltage of the charging device is 750V, the second preset voltage of the vehicle is 750V, and the battery voltage value of the vehicle is 650V after the vehicle charges the vehicle battery in the boost mode for a period of time, the charging mode of the vehicle is switched from the boost mode to the direct charging mode through the switching program, and the vehicle battery is charged through the direct charging mode.

[0077] In the embodiments of the present application, the charging mode of the vehicle battery is switched between the boost mode and the direct charging mode through the maximum output voltage of the charging device, the first preset voltage value of the vehicle, the second preset voltage value, and the battery voltage value of the vehicle after the vehicle charges the vehicle battery in the boost mode for a period of time, improving the charging efficiency of the vehicle battery.

[0078] Figure 4 It is a schematic flowchart of the implementation process of a charging method provided by the embodiments of the present application, and this method can be executed by the processor of an electronic device. As Figure 4 shown, this method includes the following steps S401 to step S402, which will be described in combination with Figure 4 the steps shown.

[0079] Step S401: Obtain the third real-time voltage of the vehicle.

[0080] In some embodiments, the third real-time voltage of the vehicle refers to the battery voltage value of the vehicle after charging for a period of time according to the boost charging mode or the battery voltage value of the vehicle after charging for a period of time according to the direct charging mode; it can be understood that when the vehicle charges for a period of time according to the boost charging mode or the direct charging mode, the battery voltage value of the vehicle after charging for a period of time according to the boost charging mode or the direct charging mode is obtained.

[0081] Step S402, when the third real-time voltage is greater than the second voltage threshold, switch the charging mode of the vehicle from the direct charging mode to the boost charging mode.

[0082] In some embodiments, if the third real-time voltage is the battery voltage value of the vehicle after charging for a period of time according to the direct charging mode of the vehicle, then when the third real-time voltage is greater than the second voltage threshold, switch the charging mode of the vehicle from the direct charging mode to the boost charging mode. It can be understood that when the battery voltage value of the vehicle after charging for a period of time according to the direct charging mode is greater than the second preset voltage value of the vehicle, the charging mode of the vehicle is switched from the direct charging mode to the boost charging mode according to the switching program, and the battery of the vehicle is boost-charged through the boost charging mode.

[0083] Exemplarily, the battery voltage value of the vehicle after charging for a period of time according to the direct charging mode is 800V, the second preset voltage value of the vehicle is 750V, the battery voltage value of the vehicle after charging for a period of time according to the direct charging mode is 800V which is greater than the second preset voltage value of the vehicle which is 750V, the charging mode of the vehicle is switched from the direct charging mode to the boost charging mode according to the switching program of the vehicle, and the battery of the vehicle is boost-charged according to the boost charging mode of the vehicle.

[0084] In some embodiments, if the third real-time voltage is the battery voltage value of the vehicle after charging for a period of time according to the boost charging mode of the vehicle, then maintain the charging mode of the vehicle in the boost charging mode.

[0085] In the embodiments of the present application, when the vehicle charges for a period of time according to the boost charging mode or the direct charging mode, the third real-time voltage of the vehicle is obtained, and the charging mode of the vehicle is switched according to the third real-time voltage of the vehicle and the second preset voltage value of the vehicle, which improves the charging efficiency of the vehicle.

[0086] Figure 5 It is a schematic flowchart of the implementation process of a charging method provided by the embodiments of the present application, and this method can be executed by the processor of an electronic device. Based on Figure 1 , step S103 can also be updated to step S501 to step S503, and will be described in combination with Figure 5 the steps shown.

[0087] Step S501: Determine the first target output voltage of the charging device based on the real-time voltage of the vehicle and the maximum output voltage.

[0088] In some embodiments, the real-time voltage of the vehicle refers to the real-time battery voltage value of the vehicle when the charging mode of the vehicle needs to be switched after the vehicle has been charged for a period of time according to the direct charging mode or the boost mode. The maximum output voltage refers to the maximum voltage value that the charging device can provide for the vehicle. Among them, the first target output voltage value of the charging device refers to the first target voltage value that the vehicle requests the charging device to provide for the vehicle battery according to the charging requirements of the vehicle battery.

[0089] In some embodiments, when the charging mode of the vehicle needs to be switched from the direct charging mode to the boost mode to continue charging the vehicle, based on the battery voltage value of the vehicle after being charged for a period of time in the direct charging mode and the maximum voltage value that the charging device can provide for the vehicle, determine the first target voltage value provided by the charging device for the vehicle; it can be understood that obtain the minimum value between the voltage value obtained by subtracting the preset voltage value from the battery voltage value of the vehicle after being charged for a period of time in the direct charging mode and the maximum voltage value that the charging device can provide for the vehicle battery, and determine this minimum value as the first target output voltage of the charging device.

[0090] Exemplarily, if the battery voltage value of the vehicle after being charged for a period of time in the direct charging mode is 600V, the preset voltage value is 10V, and the maximum voltage value that the charging device can provide for the vehicle battery is 750V, then determine the first target output voltage of the charging device as the voltage value of 590V obtained by subtracting the preset voltage value from the battery voltage value of the vehicle after being charged for a period of time in the direct charging mode; if the maximum voltage value that the charging device can provide for the vehicle battery is 500V, then determine the first target output voltage of the charging device as the maximum voltage value of 500V that the charging device can provide for the vehicle battery.

[0091] Step S502: Adjust the first actual output current of the charging device based on the first target output voltage and the preset first target output current.

[0092] In some embodiments, the preset first target output current of the vehicle refers to the first target current value that the vehicle requests the charging device to provide for the vehicle battery according to the charging requirements of the vehicle battery.

[0093] In some embodiments, based on the voltage value obtained by subtracting the preset voltage value from the battery voltage value of the vehicle after being charged for a period of time in the direct charging mode and the first target current value that the vehicle requests the charging device to provide for the vehicle battery, adjust the actual output current value of the charging device; it can be understood that adjust the actual output current value of the vehicle to be close to the first target current value that the vehicle requests the charging device to provide for the vehicle battery.

[0094] In some other embodiments, the first actual output current value of the charging device is adjusted according to the maximum voltage value that the charging device can provide for the vehicle battery and the first target current value that the vehicle requests the charging device to provide for the vehicle battery; it can be understood that the first actual output current value of the charging device is adjusted to be close to the first preset current value that the vehicle requests the charging device to provide for the vehicle battery.

[0095] Step S503, when the adjusted first actual output current is less than the first current threshold, based on the first control instruction, control the direct charging mode to be switched to the boost mode.

[0096] In some embodiments, the first current threshold refers to the minimum charging current value in the direct charging mode of the vehicle battery. The vehicle presets this small current value as the first current threshold of the vehicle, that is, the first preset current value of the vehicle. The first current threshold is less than the first target output current of the charging device.

[0097] In some embodiments, the first control instruction is used to control the charging mode of the vehicle to be switched from the direct charging mode to the boost mode, and is also used to control the charging mode of the vehicle to be maintained in the direct charging mode.

[0098] In some embodiments, obtain the first actual output current value after the charging device is adjusted. When the first actual output current value after the charging device is adjusted is less than the first preset current value of the vehicle, control the charging mode of the vehicle to be switched from the direct charging mode to the boost mode according to the first control instruction.

[0099] In some other embodiments, the vehicle continues to charge the vehicle battery according to the boost mode. The voltage value that the vehicle requests the charging device to provide for the vehicle is the minimum voltage value between the voltage value obtained by subtracting the preset voltage value from the vehicle battery voltage value and the maximum voltage value that the charging device can provide for the vehicle battery; the current value that the vehicle requests the charging device to provide for the vehicle is the minimum current value between the required current value of the vehicle battery and the maximum current value that the charging device can output; at this time, the vehicle boosts the output voltage of the charging device according to the boost mode and continues to charge the vehicle battery.

[0100] In some embodiments, when the first actual output current value after the charging device is adjusted is greater than or equal to the first preset current value of the vehicle, control the charging mode of the vehicle to be maintained in the direct charging mode according to the first control instruction, and continue to charge the vehicle battery according to the direct charging mode.

[0101] In the embodiments of the present application, by switching the charging mode of the vehicle from the direct charging mode to the boost mode according to the real-time voltage of the vehicle, the maximum output voltage of the charging device, the maximum output current of the charging device, and the actual output current, the charging efficiency of the vehicle battery is improved.

[0102] Figure 6 This is a schematic flowchart of an implementation process of a charging method provided by an embodiment of the present application. This method can be executed by a processor of an electronic device. Based on Figure 1 , step S103 can also be updated to steps S601 to S604, which will be described in conjunction with Figure 6 the steps shown.

[0103] Step S601: Determine a second target voltage based on the real-time voltage of the vehicle and the maximum output voltage of the charging device.

[0104] In some embodiments, the real-time voltage of the vehicle refers to the real-time battery voltage value of the vehicle when the charging mode of the vehicle needs to be switched after the vehicle has been charged for a period of time according to the direct charging mode or the boost mode. The maximum output voltage refers to the maximum voltage value that the charging device can provide for the vehicle. Among them, the second target output voltage value of the charging device refers to the second target voltage value that the vehicle requests the charging device to provide for the vehicle battery according to the charging demand of the vehicle battery.

[0105] In some embodiments, when the charging mode of the vehicle needs to be switched from the boost mode to the direct charging mode to continue charging the vehicle, according to the battery voltage value of the vehicle after the vehicle has been charged for a period of time in the boost mode and the maximum voltage value that the charging device can provide for the vehicle, determine the second target voltage value that the charging device needs to provide for the vehicle; it can be understood that obtain the minimum value between the voltage value obtained by subtracting the preset voltage value from the battery voltage value of the vehicle after the vehicle has been charged for a period of time in the boost mode and the maximum voltage value that the charging device can provide for the vehicle battery, and determine this minimum value as the second target output voltage of the charging device.

[0106] Exemplarily, if the battery voltage value of the vehicle after the vehicle has been charged for a period of time in the boost mode is 600V, the preset voltage value is 10V, and the maximum voltage value that the charging device can provide for the vehicle battery is 750V, then determine the second target output voltage of the charging device as the voltage value of 590V obtained by subtracting the preset voltage value from the battery voltage value of the vehicle after the vehicle has been charged for a period of time in the boost mode; if the maximum voltage value that the charging device can provide for the vehicle battery is 500V, then determine the second target output voltage of the charging device as the maximum voltage value of 500V that the charging device can provide for the vehicle battery.

[0107] Step S602: Determine a second target current based on the charging demand current of the vehicle and the maximum output current of the charging device.

[0108] In some embodiments, the charging demand current of the vehicle refers to the current value required for the vehicle battery to be charged when the vehicle is in the current step-up mode and switches to the direct charging mode, and the maximum output current of the charging device refers to the maximum charging current that the charging device can provide for the vehicle.

[0109] In some embodiments, according to the current value required for the vehicle battery after charging the vehicle battery for a period of time in the step-up mode and the maximum current value that the charging device can provide for the vehicle battery, determine the second target current value of the charging device; it can be understood that obtain the minimum current value among the current value required for the vehicle battery after charging the vehicle battery for a period of time in the step-up mode and the maximum current value that the charging device can provide for the vehicle battery, and determine the minimum current value as the second target current value of the charging device.

[0110] Exemplarily, according to the current value of 5A required for the vehicle battery after charging the vehicle battery for a period of time in the step-up mode, and the maximum current that the charging device can provide for the vehicle is 10A, the current value of 5A required for the vehicle battery after charging the vehicle battery for a period of time in the step-up mode is determined as the second target current of the charging device; if the maximum current that the charging device can provide for the vehicle is 3A, then the maximum current of 3A that the charging device can provide for the vehicle is determined as the second target current.

[0111] Step S603, adjust the first actual output voltage of the charging device based on the second target voltage and the second target current.

[0112] In some embodiments, the first actual output voltage of the charging device refers to the voltage value provided by the charging device for charging the vehicle battery when the vehicle is charging in the direct charging mode.

[0113] In some embodiments, adjust the voltage value provided by the charging device for charging the vehicle battery when the vehicle is charging in the direct charging mode according to the minimum voltage value between the voltage value obtained by subtracting the preset voltage value from the battery voltage value of the vehicle after charging the vehicle for a period of time in the step-up mode and the maximum voltage value that the charging device can provide for the vehicle battery, and the minimum current value among the current value required for the vehicle battery after charging the vehicle battery for a period of time in the step-up mode and the maximum current value that the charging device can provide for the vehicle battery; it can be understood that the voltage value provided by the charging device for charging the vehicle battery when the vehicle is charging in the direct charging mode is greater than or equal to the minimum voltage value between the voltage value obtained by subtracting the preset voltage value from the battery voltage value of the vehicle after charging the vehicle for a period of time in the step-up mode and the maximum voltage value that the charging device can provide for the vehicle battery.

[0114] Step S604: When the adjusted first actual output voltage is greater than or equal to the second target voltage, control the boost mode to switch to the direct charging mode based on the second control instruction.

[0115] In some embodiments, the second control instruction is used to control the charging mode of the vehicle to switch from the boost mode to the direct charging mode, and is also used to set the charging mode position of the vehicle in the boost mode.

[0116] In some embodiments, according to the above, the adjusted first actual output voltage of the charging device is obtained. When the adjusted first actual output voltage is greater than or equal to the minimum value between the voltage value obtained by subtracting the preset voltage value from the battery voltage of the vehicle after charging the vehicle in the boost mode for a period of time and the maximum voltage value that the charging device can provide for the vehicle battery, control the charging mode of the vehicle battery to switch from the boost mode to the direct charging mode according to the second control instruction, and continue to charge the vehicle according to the direct charging mode.

[0117] In other embodiments, when the adjusted first actual output voltage is less than the minimum value between the voltage value obtained by subtracting the preset voltage value from the battery voltage of the vehicle after charging the vehicle in the boost mode for a period of time and the maximum voltage value that the charging device can provide for the vehicle battery, it is determined that the actual output voltage of the charging device is limited and cannot provide the voltage required for the vehicle in the direct charging mode. Then, according to the second control instruction, the charging mode of the vehicle is maintained in the boost mode, and the vehicle continues to be charged according to the boost mode.

[0118] Figure 7 The structural schematic diagram of a charging device provided by an embodiment of the present application is shown in Figure 7As shown, the charging device 700 includes an electric drive power control module 701 and a boost box 702; the electric drive power control module includes multiple groups of power switch tubes 7011 and motor windings 7012; the boost box 702 includes a charging positive relay 7021, a boost relay 7022, a capacitor relay 7023, and a charging negative relay 7024, a buck capacitor 7025, and a boost inductor 7026; the first end of the charging positive relay 7021 is connected to the first end of the multiple groups of power switch tubes 7011, the second end of the charging positive relay 7021 is connected to the first end of the capacitor relay 7023, and the second end of the capacitor relay 7023 is connected to the first end of the buck capacitor 7025; the second end of the buck capacitor 7025 is connected to the first end of the charging negative relay 7024, and the second end of the charging negative relay 7024 is connected to the second end of the multiple groups of power switch tubes 7011; the third end of the multiple groups of power switch tubes 7011 is connected to the first end of the motor windings 7012; the second end of the motor windings 7012 is connected to the first end of the boost inductor 7026, the second end of the boost inductor 7026 is connected to the first end of the boost relay 7022, and the second section of the boost relay 7022 is connected to the first end of the capacitor relay 7023.

[0119] Figure 8 As shown in the schematic flowchart of the implementation process of a charging method provided by an embodiment of the present application, this method can be executed by a processor of an electronic device. Based on Figure 5 , Figure 5 Step S503 in can be updated to step S801 and step S802, and will be described in combination with Figure 8 the steps shown.

[0120] Step S801, based on the first control instruction, control the boost relay and the capacitor relay to switch from the off state to the on state and control the charging positive relay to switch from the on state to the off state.

[0121] In some embodiments, according to the above, in response to the first actual output current of the charging device being less than the first circuit threshold, control the boost relay 7022 and the capacitor relay 7023 to switch from the off state to the on state according to the first control instruction, and control the charging positive relay 7021 to switch from the on state to the off state.

[0122] Step S802, in response to the boost relay and the capacitor relay being in the on state and the charging positive relay being in the off state, generate a first control result, where the first control result indicates that the charging mode of the vehicle switches from the direct charging mode to the boost mode.

[0123] In some embodiments, the first control result may indicate that the charging device 700 of the vehicle is switched from a direct charging circuit to a boost charging circuit; the first control result is used to control the working mode of the charging device 700 of the vehicle to be switched from a direct charging mode to a boost mode.

[0124] In some embodiments, in response to the boost relay 7022 and the capacitor relay 7023 being switched from an open state to a closed state, and the charging positive relay 7021 being switched from a closed state to an open state, a first control result is generated, indicating that the charging device 700 of the vehicle is switched from a direct charging circuit to a boost charging circuit, and the working mode of the charging device 700 of the vehicle is controlled to be switched from a direct charging mode to a boost mode according to the first control result.

[0125] Figure 9 Schematic diagram of the implementation process of a charging method provided by an embodiment of the present application. This method can be executed by a processor of an electronic device. Based on Figure 6 , step S603 can be updated to step S901 and step S902, and will be described in combination with Figure 9 the steps shown.

[0126] Step S901: Control the charging positive relay to be switched from an open state to a closed state and control the boost relay and the capacitor relay to be switched from a closed state to an open state based on the second control instruction.

[0127] In some embodiments, in response to the adjusted first actual output voltage being greater than or equal to the second target voltage, control the charging positive relay 7021 to be switched from an open state to a closed state according to the second control instruction, and control the boost relay 7022 and the capacitor relay 7023 to be adjusted from a closed state to an open state.

[0128] Step S902: Generate a second control result in response to the boost relay and the capacitor relay being in an open state and the charging positive relay being in a closed state. The second control result indicates that the charging mode of the vehicle is switched from the boost mode to the direct charging mode.

[0129] In some embodiments, the second control result may indicate that the charging device 700 of the vehicle is switched from a boost charging circuit to a direct charging circuit; the second control result is also used to control the working mode of the charging device 700 of the vehicle to be switched from a boost mode to a direct charging mode.

[0130] In some embodiments, in response to the boost relay 7022 and the capacitor relay 7023 being in the off state and the charging positive relay 7021 being in the on state, a second control result is generated, indicating that the charging device 700 of the vehicle switches from the boost charging circuit to the direct charging circuit; and according to the second control result, the operating mode of the charging device 700 of the vehicle is switched from the boost mode to the direct charging mode.

[0131] Figure 10 Schematic diagram of the structure of a charging device provided by an embodiment of the present application, based on Figure 7 the charging device 700, the charging device 700 further includes a high-voltage battery pack 703 and an external DC charging module 704. The high-voltage battery pack 703 includes a battery module 7031, a battery positive relay 7032, and a battery negative relay 7033; the external DC charging module 704 includes a power supply power module 7041, a power supply positive relay 7042, and a power supply negative relay 7043; the electric drive power control module 701 further includes a bus capacitor 7013; the multiple groups of power switch tubes 7011 include power switch tube S1, power switch tube S2, power switch tube S3, power switch tube S4, power switch tube S5, and power switch tube S6.

[0132] Among them, the first end of the battery module 7031 is connected to the battery positive relay 7032, the second end of the battery module 7031 is connected to the battery negative relay 7033, the second end of the battery positive relay 7032 is connected to the first end of the bus capacitor 7013, and the second end of the battery negative relay 7033 is connected to the second end of the bus capacitor 7013; the first end of the bus capacitor 7013 is respectively connected to the first ends of the power switch tube S1, the power switch tube S3, and the power switch tube S5, and the second end of the bus capacitor 7013 is respectively connected to the first ends of the power switch tube S2, the power switch tube S4, and the power switch tube S6; the second ends of the power switch tubes S1, S2, S3, S4, S5, and S6 are connected to the first end of the motor winding 7012; the first end of the power supply power module 7041 is connected to the first end of the power supply positive relay 7042, and the second end of the power supply power module 7041 is connected to the first end of the power supply negative relay 7043; the second end of the power supply positive relay 7042 is connected to the second end of the charging positive relay 7021, and the second end of the power supply negative relay 7043 is connected to the second end of the step-down capacitor 7025.

[0133] Figure 11The following is a schematic flowchart of an implementation process of a charging method provided by an embodiment of this application. This method can be executed by a processor of an electronic device. The method includes the following steps S1101 to S1103, which will be described in conjunction with Figure 11 the steps shown.

[0134] Step S1101: When the vehicle is in the direct charging mode, based on the maximum output voltage and maximum output current of the charging device, as well as the real-time voltage and demand current of the vehicle, test the actual output capacity of the charging device to generate a test result.

[0135] In some embodiments, the actual output capacity of the charging device includes the actual voltage output capacity and actual current output capacity of the charging device.

[0136] In some embodiments, the test result can indicate that the output capacity of the charging device meets the preset requirements or the output capacity of the charging device does not meet the preset requirements.

[0137] In some embodiments, when the working mode of the charging device 700 of the vehicle is the direct charging mode, obtain the real-time voltage value and real-time current value of the vehicle battery after the charging device charges the vehicle for a period of time in the direct charging mode of the vehicle charging device 700, as well as the second actual output current value and second actual output voltage value of the charging device at this time. Combine the maximum output voltage value that the charging device can provide for the vehicle battery to test the actual output capacity of the charging device and generate a test result; it can be understood that the actual output voltage capacity and actual output current capacity of the charging device are tested to generate a test result.

[0138] Step S1102: When the test result indicates that the output capacity of the charging device does not meet the preset requirements, switch the direct charging mode to the boost mode.

[0139] In some embodiments, when the test result indicates that the output capacity of the charging device does not meet the preset requirements, switch the direct charging mode to the boost mode; it can be understood that when the actual output voltage capacity or actual output current capacity of the charging device does not meet the preset requirements, it is determined that the output capacity of the charging device does not meet the preset requirements. Then, according to the above, based on the first control instruction, control the boost relay 7022 and the capacitor relay 7023 to switch from the off state to the on state, control the charging positive relay 7021 to switch from the on state to the off state, generate a first control result, and control the working mode of the charging device 700 of the vehicle to switch from the direct charging mode to the boost mode according to the first control result.

[0140] Step S1103, when the test result indicates that the output capability of the charging device meets the preset requirements, maintain the charging mode of the vehicle in the direct charging mode.

[0141] In some embodiments, when the test result indicates that the output capability of the charging device meets the preset requirements, maintain the charging mode of the vehicle in the direct charging mode; it can be understood that when the actual output voltage capability of the charging device meets the preset requirements and the actual output current capability meets the preset requirements, according to the first control instruction, maintain the working mode of the charging device 700 of the vehicle in the direct charging mode.

[0142] In the embodiments of the present application, the actual output capability of the charging device is tested according to the second actual output current, the second actual output voltage, the maximum output voltage of the charging device, and the real-time voltage and real-time current of the vehicle, so that the charging mode of the vehicle can be switched according to whether the actual output capability of the charging device is reliable, improving the charging efficiency of the vehicle battery.

[0143] Figure 12 It is a schematic flow chart of the implementation of a charging method provided by the embodiments of the present application, and this method can be executed by the processor of an electronic device. Based on Figure 11 , step S1101 can be updated to steps S1201 to S1208, and will be described in combination with Figure 12 the steps shown.

[0144] Step S1201, determine the third target output voltage of the charging device based on the real-time voltage of the vehicle and the maximum output voltage of the charging device.

[0145] In some embodiments, the real-time voltage of the vehicle represents the battery voltage value of the vehicle after the charging device 700 of the vehicle has charged the vehicle battery for a period of time in the direct charging mode.

[0146] In some embodiments, determine the third target output voltage of the charging device based on the real-time voltage of the vehicle and the maximum output voltage of the charging device; it can be understood that obtain the voltage value after adding a preset voltage value to the battery voltage value of the vehicle after the charging device 700 of the vehicle has charged the vehicle battery for a period of time in the direct charging mode and the maximum output voltage value that the charging device can provide for the vehicle, and take the minimum voltage value as the third target output voltage of the charging device.

[0147] Exemplarily, the real-time voltage of the vehicle indicates that after the charging device 700 of the vehicle charges the vehicle battery for a period of time in the direct charging mode, the battery voltage value of the vehicle is 700V, the preset voltage value is 10V, and the maximum output voltage that the charging device can provide for the vehicle is 750V. Then, the voltage value of 710V after adding the preset voltage value to the battery voltage value of the vehicle after the charging device 700 of the vehicle charges the vehicle battery for a period of time in the direct charging mode is determined as the third target output voltage of the charging device; if the battery voltage value of the vehicle is 750V after the charging device 700 of the vehicle charges the vehicle battery for a period of time in the direct charging mode, then the maximum output voltage of 750V that the charging device can provide for the vehicle is determined as the third target voltage of the charging device.

[0148] Step S1202: Determine the third target output current of the charging device based on the required current of the vehicle and the maximum output current of the charging device.

[0149] In some embodiments, the required current of the vehicle refers to the current value required for the vehicle battery to be charged when the charging device 700 of the vehicle charges the vehicle battery for a period of time in the direct charging mode.

[0150] In some embodiments, the third target output current of the charging device is determined based on the required voltage of the vehicle and the maximum output current of the charging device; it can be understood that the minimum current value between the current value required for the vehicle battery to be charged when the charging device 700 of the vehicle charges the vehicle battery for a period of time in the direct charging mode and the maximum output current value that the charging device can provide for the vehicle battery charging is obtained, and this minimum current value is determined as the third target output current of the charging device.

[0151] Exemplarily, if the current value required for the vehicle battery to be charged when the charging device 700 of the vehicle charges the vehicle battery for a period of time in the direct charging mode is 5V, and the maximum output current value that the charging device can provide for the vehicle battery charging is 10V, then the current value of 5V required for the vehicle battery to be charged when the charging device 700 of the vehicle charges the vehicle battery for a period of time in the direct charging mode is determined as the third target output current of the charging device; if the maximum output current value that the charging device can provide for the vehicle battery charging is 3V, then the maximum output current value of 3V that the charging device can provide for the vehicle battery charging is determined as the third target output current of the charging device.

[0152] Step S1203: Adjust the second actual output current of the charging device based on the third target output voltage and the third target output current.

[0153] In some embodiments, the second actual output current of the charging device refers to the actual current value provided by the charging device for the vehicle battery during the process of the charging device 700 of the vehicle charging the vehicle battery in the direct charging mode.

[0154] In some embodiments, based on the real-time voltage of the vehicle, the minimum voltage value between the voltage value obtained by adding a preset voltage value to the battery voltage value of the vehicle after the charging device 700 of the vehicle charges the vehicle battery for a period of time in the direct charging mode and the maximum output voltage value that the charging device can provide for the vehicle, and the minimum current value between the current value required for the vehicle battery to be charged and the maximum output current value that the charging device can provide for charging the vehicle battery after the charging device 700 of the vehicle charges the vehicle battery for a period of time in the direct charging mode, the actual current value provided by the charging device for the vehicle battery during the process of the charging device 700 of the vehicle charging the vehicle battery in the direct charging mode is adjusted; it can be understood that the second actual output current value is adjusted to be close to the third preset current value of the vehicle.

[0155] Step S1204: When the adjusted second actual output current is less than the second current threshold and lasts for a first preset time, determine the maximum output voltage of the charging device as the fourth target output voltage.

[0156] In some embodiments, the second current threshold refers to the minimum current value required by the vehicle for the charging device in the direct charging mode when the output capacity of the charging device meets the preset requirements, that is, the second preset current value of the vehicle.

[0157] In some embodiments, when the actual current value provided by the charging device for the vehicle battery during the process of the charging device 700 of the vehicle charging the vehicle battery in the direct charging mode after adjustment is less than the second preset current value of the vehicle and lasts for the first preset time of the vehicle, determine the maximum output voltage of the charging device as the fourth target output voltage.

[0158] Exemplarily, if the actual current value provided by the charging device for the vehicle battery during the process of the charging device 700 of the vehicle charging the vehicle battery in the direct charging mode after adjustment is 3A, the third preset current value of the vehicle is 5A, and the maximum charging voltage that the charging device can provide for the vehicle battery is 750V, after lasting for the first preset time of the vehicle, determine the maximum charging voltage 750V that the charging device can provide for the vehicle battery as the fourth target output voltage of the charging device.

[0159] Step S1205: Obtain the third actual output current and the second actual output voltage for the second preset time.

[0160] In some embodiments, the third actual output current refers to the actual output current of the charging device after the third target output current and the fourth target output voltage last for the second preset time of the vehicle.

[0161] In some embodiments, the second actual output voltage refers to the actual output voltage of the charging device after the third target output current and the fourth target output voltage have persisted for the second preset time of the vehicle.

[0162] In some embodiments, obtaining the third actual output current at the second preset time means obtaining the actual output current of the charging device after the third target output current and the fourth target output voltage have persisted for the second preset time of the vehicle; obtaining the second actual output voltage at the second preset time means obtaining the actual output voltage of the charging device after the third target output current and the fourth target output voltage have persisted for the second preset time of the vehicle.

[0163] Step S1206: Adjust the second actual output voltage and the third actual output current based on the fourth target output voltage and the third target output current.

[0164] In some embodiments, according to the minimum current value between the maximum charging voltage that the charging device can provide for the vehicle battery and the current value required for the vehicle battery to be charged when the charging device of the vehicle charges the vehicle battery for a period of time in the direct charging mode and the maximum output current value that the charging device can provide for the vehicle battery to be charged, adjust the actual output current and output voltage of the charging device after the third target output current and the fourth target output voltage have persisted for the second preset time of the vehicle; it can be understood that adjust the actual output current of the charging device after the third target output current and the fourth target output voltage have persisted for the second preset time of the vehicle to be close to the third preset current of the vehicle, and adjust the actual output voltage of the charging device after the third target output current and the fourth target output voltage have persisted for the second preset time of the vehicle to be close to the maximum charging voltage that the charging device can provide for the vehicle battery.

[0165] Step S1207: Generate a test result indicating that the output ability of the charging device does not meet the preset requirements when the adjusted third actual output current is less than the second current threshold and the adjusted second actual output voltage is less than the fourth target output voltage.

[0166] In some embodiments, when the actual output current of the charging device after the adjusted third target output current and the adjusted fourth target output voltage have persisted for the second preset time of the vehicle is less than the third preset current value of the vehicle and the actual output current of the charging device after the adjusted third target output current and the adjusted fourth target output voltage have persisted for the second preset time of the vehicle is less than the maximum charging voltage that the charging device can provide for the vehicle battery, generate a test result indicating that the output ability of the charging device does not meet the preset requirements.

[0167] Exemplarily, when the actual output current of the charging device is 3 A, the actual output voltage is 600 V, the third preset current value of the vehicle is 5 A, and the maximum charging voltage that the charging device can provide is 750 V after the charging device maintains the third target output current and the fourth target output voltage for the second preset time of the vehicle, a test result indicating that the output capability of the charging device does not meet the preset requirements is generated.

[0168] Step S1208: When the adjusted third actual output current is greater than or equal to the second current threshold and the adjusted second actual output voltage is equal to the maximum output voltage of the charging device, a test result indicating that the output capability of the charging device meets the preset requirements is generated.

[0169] In some embodiments, when the actual output current of the charging device is greater than or equal to the third preset current value of the vehicle and the actual output current of the charging device is equal to the maximum charging voltage that the charging device can provide for the vehicle battery after the charging device maintains the adjusted third target output current and the adjusted fourth target output voltage for the second preset time of the vehicle, a test result indicating that the output capability of the charging device does not meet the preset requirements is generated.

[0170] Exemplarily, when the actual output current of the charging device is 5 A, the actual output voltage is 750 V, the third preset current value of the vehicle is 3 A, and the maximum charging voltage that the charging device can provide is 750 V after the charging device maintains the third target output current and the fourth target output voltage for the second preset time of the vehicle, a test result indicating that the output capability of the charging device does not meet the preset requirements is generated.

[0171] In the embodiments of the present application, the output capability of the charging device is tested according to the above steps, and the charging mode of the vehicle charging device 700 is switched according to whether the output capability of the charging device meets the preset requirements, thereby improving the charging efficiency of the vehicle battery.

[0172] The application of the charging method provided in the embodiments of the present application in an actual scenario is described below, which mainly involves the switching process of the charging mode.

[0173] Currently, in the industry, to solve the problem of electric vehicles with a voltage platform higher than 500V charging on charging piles with different voltage levels such as 500V / 750V / 1000V, the main solution idea is to judge by the actual voltage output by the charging pile during insulation detection or the highest output voltage in the maximum output capacity message CML sent by the charging pile to the charger and the highest charging voltage of the electric vehicle battery. When the actual voltage output by the charging pile during insulation detection or the highest output voltage in the maximum output capacity message CML of the charger is higher than the battery voltage, the battery is charged by direct charging. Otherwise, the output voltage of the charging pile needs to be boosted, and the battery is charged by boost charging. Although this technically solves the problem of high-voltage platform electric vehicles being able to charge on charging piles with different voltage levels, there are still the following problems:

[0174] (1) Many charging piles on the market do not fully comply with the standards or have inconsistent understandings of national standards. The output voltage during insulation detection of the charging pile and the highest output voltage in the CML message sent do not conform to the national standard requirements, or the actual output voltage capacity of the charging pile decreases due to the aging of the charging pile or the charging pile's own protection strategy. The charging output voltage of the charging pile cannot reach the highest output voltage in the CML message. If the electric vehicle requests charging parameters according to the highest output voltage in the CML message sent by the charging pile, the charging pile cannot output according to the requested parameters, resulting in the vehicle being unable to charge, which greatly reduces the charging adaptability.

[0175] (2) The lower and upper limits of the operating voltage of the electric vehicle battery have a relatively wide range. If the direct charging or boost charging is judged solely based on the highest charging voltage of the battery and the highest output voltage of the charging pile, the charging power and charging efficiency will be greatly reduced when the battery is at a lower operating voltage (the current operating voltage of the battery is lower than the voltage that the charging pile can output). For example, when an 800V voltage platform electric vehicle with a very low battery SOC and a current operating voltage less than 400V undergoes boost charging on a 750V charging pile, on the one hand, the boost charging will cause a reduction in charging efficiency due to an energy conversion through the boost device. On the other hand, the boost charging cannot utilize the maximum power of the charging pile due to the limited conversion power of the boost device, resulting in a significant extension of the charging time and a poor user experience.

[0176] Based on the above problems, the present application performs adaptive DC charging mode switching and charging parameter adaptation according to the current battery voltage, the maximum chargeable voltage of the battery, the charger's maximum capacity output message (Channel Message Log, CML) and the actual maximum output voltage of the charging pile, so that electric vehicles of different voltage platforms can be charged efficiently and quickly on charging piles of different specifications, and can be charged even on charging piles on the market that falsely report their capacity or whose actual output voltage or current cannot reach the maximum output voltage and maximum output current in the charger's maximum capacity output CML message. This greatly improves the charging adaptability, charging efficiency and charging power, shortens the charging time and improves the user's charging experience.

[0177] Please continue reading Figure 10 , which shows a charging device 700, such as Figure 10 As described above, the device is composed of four major parts: an electric drive power control module 701, a boost box 702, a high-voltage battery pack 703, and an external DC charging module 704.

[0178] In some embodiments, the power switch tube S1 and the power switch tube S2 are connected to form a first bridge arm of the electric drive power module 701, the power switch tube S3 and the power switch tube S4 are connected to form a second bridge arm of the electric drive power module 701, and the power switch tube S5 and the power switch tube S6 are connected to form a third bridge arm of the electric drive power module 701.

[0179] In some embodiments, the charging mode of the charging device 700 provided in the embodiment of the present application may include a direct charging mode, a buck mode, and a boost mode.

[0180] In some embodiments, when the charging device 700 is operating in the direct charging mode, the battery positive relay 7032 and the battery negative relay 7033 are in a closed state, the charging positive relay 7021 and the charging negative relay 7024 are in a closed state, the power supply positive relay 7042 and the power supply negative relay 7043 are in a closed state, and the boost relay 7022 and the capacitor relay 7023 are in a disconnected state. At this time, the output voltage of the power supply module 7041 is greater than the current working voltage of the vehicle battery, and the current output by the power supply module 7041 directly charges the battery through the wire. This charging method can give full play to the charging capacity of the battery and the charging pile, has a large charging power, and does not convert electric energy through the electric drive transformer circuit, and has a high charging efficiency.

[0181] In some embodiments, when the charging device 700 operates in the buck mode, the battery positive relay 7032 and the battery negative relay 7033 are in the closed state, the charging positive relay 7021 is in the open state, the charging negative relay 7024 is in the closed state, the boost relay 7022 and the capacitor relay 7023 are in the closed state, and the power supply positive relay 7042 and the power supply negative relay 7043 are in the open state; wherein, the battery module 7031, the power switch tubes S1, S2, S3, S4, S5, S6, the motor winding 7012, the boost inductor 7026, and the buck capacitor 7025 together form a buck circuit, and at this time, the voltage of the vehicle battery is stepped down by the buck circuit to a lower voltage and applied to both ends of the buck capacitor. It can be understood that the buck mode belongs to the transient charging mode and is not the working state during battery charging. This charging mode is mainly used when the output voltage of the charging pile is less than the current working voltage of the battery, and the battery voltage needs to be stepped down to handshake with the charging pile to complete parameter adaptation.

[0182] In some embodiments, when the charging device 700 operates in the boost mode, the battery positive relay 7032 and the battery negative relay 7033 are in the closed state, the charging positive relay 7021 is in the open state, the charging negative relay 7024 is in the closed state, the boost relay 7022 is in the closed state, the capacitor relay 7023 is in the open state, and the power supply positive relay 7042 and the power supply negative relay 7043 are in the closed state. At this time, the battery module 7031, the boost inductor 7026, the motor winding 7012, the power switch tubes S1, S2, S3, S4, S5, S6 together form a boost circuit, and at this time, the low-voltage power output by the charging pile is boosted to a higher voltage by the boost circuit to charge the vehicle battery. Compared with the direct battery charging mode, the boost mode has a smaller charging power (because a large charging power leads to a high temperature rise, and too high a temperature will cause demagnetization of the motor permanent magnet) and a lower charging efficiency (there will be power loss due to the conversion efficiency of the electric drive transformer).

[0183] Figure 13 As shown in the flowchart of the implementation process of an adaptive DC charging method provided by the embodiments of the present application, this method can be executed by the processor of an electronic device. As Figure 13 shown, this process may include steps S1301 to S1314, which will be described in combination with Figure 13 the steps shown.

[0184] Step S1301: Obtain the first real-time voltage of the vehicle battery.

[0185] In some embodiments, the voltage value of the vehicle battery before charging is obtained.

[0186] Step S1302: When the first real-time voltage of the vehicle battery is greater than or equal to 500V, control the charging device 700 to enter the step-down mode.

[0187] In some embodiments, if the first real-time voltage of the vehicle battery is greater than or equal to 500V, then control the charging device 700 of the vehicle to enter the step-down mode, and reduce the battery voltage to below 500V, so as to handshake with the charging pile and match parameters.

[0188] Step S1303: In response to the charging pile completing parameter matching, control the charging device 700 to enter the boost mode.

[0189] In one embodiment, in response to the real-time voltage of the vehicle battery after step-down through the step-down mode being less than 500V and the charging pile completing parameter matching, control the charging device 700 to enter the boost mode to charge the vehicle battery.

[0190] Step S1304: Obtain the maximum output voltage of the charging pile. When the maximum output voltage of the charging pile is equal to 500V, maintain the working mode of the charging device 700 in the boost mode.

[0191] In some embodiments, when the maximum charging voltage that the charging pile can provide for the vehicle battery is 500V, maintain the working mode of the charging device 700 in the boost mode, and continue to charge the vehicle battery through the boost mode.

[0192] Step S1305: When the maximum output voltage of the charging pile is equal to 750V and the second real-time voltage of the vehicle is greater than or equal to 750V, maintain the working mode of the charging device 700 in the boost mode.

[0193] Step S1306: When the third real-time voltage of the vehicle is less than 750V, switch the working mode of the charging device 700 from the boost mode to the direct charging mode.

[0194] Step S1307: Obtain the third real-time voltage of the vehicle battery. When the third real-time voltage is greater than or equal to 750V, switch the working mode of the charging device 700 from the direct charging mode to the boost mode.

[0195] Step S1308: When the third real-time voltage is less than 750V, maintain the working mode of the charging device 700 in the direct charging mode.

[0196] Step S1309: When the first real-time voltage of the vehicle battery is less than the first preset voltage, control the charging device 700 to enter the direct charging mode.

[0197] Step S1310: Obtain the fourth real-time voltage of the vehicle battery. When the fourth real-time voltage is less than 500V, maintain the working mode of the charging device 700 in the direct charging mode.

[0198] Step S1311: When the fourth real-time voltage is greater than or equal to 500V and the maximum output voltage of the charging pile is equal to 500V, switch the working mode of the charging device 700 from the direct charging mode to the boost mode.

[0199] Step S1312: When the fourth real-time voltage is greater than or equal to 750V and the maximum output voltage of the charging pile is equal to 750V, maintain the working mode of the charging device 700 in the direct charging mode.

[0200] Step S1313: Obtain the fifth real-time voltage of the vehicle battery. When the fifth real-time voltage is less than or equal to 750V, maintain the working mode of the charging device 700 in the direct charging mode.

[0201] Step S1314: When the fifth real-time voltage is greater than 750V, switch the working mode of the charging device 700 from the direct charging mode to the boost mode.

[0202] Figure 14 It is a schematic flowchart of the implementation process of a switching method provided by an embodiment of the present application. This method can be executed by the processor of an electronic device. As Figure 14 shown, this method includes steps S1401 to S1403, which will be described in combination with Figure 14 the steps shown.

[0203] Step S1401: Request the charging pile to output a voltage that is the minimum value between the current voltage of the battery minus 10V and the maximum output voltage of the charging pile, and request the charging pile to output a current of 0A.

[0204] Step S1402: After the actual output current of the charging pile is less than 5A, the vehicle controls to close the boost relay 7022 and the capacitor relay 7023, and controls the charging positive relay 7021 to disconnect.

[0205] Step S1403: In response to the closing of the boost relay 7022 and the capacitor relay 7023 and the disconnection of the charging positive relay 7021, the vehicle requests the charging device 700 to enter the boost mode.

[0206] In some embodiments, in response to the boost relay 7022 and the capacitor relay 7023 being closed and the charging positive relay 7021 being open, the charging device 700 switches from the direct charging circuit to the boost charging circuit. At this time, after controlling the charging device 700 of the vehicle to enter the boost mode, the vehicle requests the output voltage of the charging pile to be the minimum value between the current battery voltage - 10V and the maximum output voltage of the charging pile, and requests the output current of the charging pile to be the minimum value between the battery charging demand current and the maximum output current of the charging pile. At the same time, control the charging device 700 to transform and output a current that is the minimum value between the battery charging demand current and the maximum output current of the charging pile, and the transformed output voltage is the minimum value between the current battery voltage + 10V and the maximum output voltage of the charging pile, and boost the voltage output by the charging pile to the battery voltage through the charging device to charge the battery in a boost manner.

[0207] Figure 15 FIG. is a schematic flowchart of the implementation of a switching method provided by an embodiment of the present application, and this method can be executed by a processor of an electronic device. As Figure 15 shown, this method includes steps S1501 to S1504, which will be described in conjunction with Figure 15 the steps shown.

[0208] Step S1501: The vehicle requests the output voltage of the charging pile to rise to the minimum value between the current battery voltage minus 10V and the maximum output voltage of the charging pile, requests the output current of the charging pile to be the minimum value between the battery charging demand current and the maximum output current of the charging pile CML, and at the same time controls the charging device 700 to transform and output a voltage of the current battery voltage 10V and a transformed output current of 0A.

[0209] Step S1502: When the actual output voltage of the charging pile reaches the vehicle-requested output voltage, control the charging positive relay 7021 to close and control the boost relay 7022 and the capacitor relay 7023 to open.

[0210] Step S1503: When the actual output voltage of the charging pile cannot reach the vehicle-requested output voltage, control the working mode of the charging device 700 to remain in the boost mode.

[0211] Step S1504: In response to the boost relay 7022 and the capacitor relay 7023 being open and the charging positive relay 7021 being closed, switch the working mode of the vehicle charging device 700 from the boost mode to the direct charging mode.

[0212] In some embodiments, after the vehicle charging device 700 enters the direct charging mode, the vehicle requests the output voltage of the charging pile to rise to the minimum value between the current battery voltage + 10V and the maximum output voltage of the charging pile, and requests the output current of the charging pile to be the minimum value between the battery charging demand current and the maximum output current of the charging pile CML.

[0213] Figure 16 This is a schematic diagram of the implementation process of an adaptive DC charging method provided by an embodiment of the present application. This method can be executed by a processor of an electronic device. As Figure 16 shown, this method includes steps S1601 to S1604, which will be described in conjunction with Figure 16 this.

[0214] Step S1601: When the vehicle charging device 700 is in the direct charging mode, the vehicle requests the charging pile to output a voltage that is the minimum value between the current battery voltage plus 10V and the maximum output voltage of the charging pile, and requests the charging pile to output a current that is the minimum value between the battery charging demand current and the maximum output current of the charging pile CML.

[0215] Step S1602: When the actual output current of the charging pile is less than 2A, the vehicle requests the charging pile to output a voltage that is the maximum output voltage of the charging pile.

[0216] Step S1603: After the vehicle requests the charging pile to output a voltage that is the maximum output voltage of the charging pile for a preset time, when the actual output current of the charging pile is less than 2A and the actual output voltage is less than the maximum output voltage, it is determined that the actual output capacity of the charging pile is limited.

[0217] Step S1604: In response to the limited actual output capacity of the charging pile, control the working mode of the vehicle charging device 700 to switch from the direct charging mode to the boost mode.

[0218] In an embodiment of the present application, by testing the actual output voltage and actual output current of the charging pile, the charging mode of the vehicle is switched when the output capacity of the charging pile is limited, thereby solving the problem that the maximum output voltage feedback by the charging pile does not match the actual output voltage of the charging pile, but the charging device 700 of the vehicle enters the direct charging mode according to the maximum output voltage feedback by the charging pile, resulting in the battery being unable to charge, and improving the charging efficiency of the vehicle.

[0219] Figure 17 This is a schematic diagram of the composition structure of a charging system provided by an embodiment of the present application. As Figure 17 shown, the charging system 1700 includes: a determination module 1701, an acquisition module 1702, and a switching module 1703. Among them, the determination module 1701 is used to determine the initial charging mode of the vehicle based on the first real-time voltage of the vehicle and the first voltage threshold; the acquisition module 1702 is used to acquire the second real-time voltage of the vehicle and the maximum output voltage of the charging device in the initial charging mode; the switching module 1703 is used to switch the charging mode of the vehicle between the direct charging mode and the boost mode based on the second real-time voltage and the maximum output voltage.

[0220] In some embodiments, the initial charging mode includes a direct charging mode and a boost mode; the determining module 1701 is further configured to: determine that the initial charging mode is the direct charging mode when the first real-time voltage is less than the first voltage threshold; and determine that the initial charging mode is the buck mode when the first real-time voltage is greater than or equal to the first voltage threshold.

[0221] In some embodiments, the determining module 1701 is further configured to: reduce the vehicle voltage based on the buck mode; and when the vehicle voltage is less than the first voltage threshold, in response to the vehicle and the charging device completing parameter adaptation, switch the charging mode of the vehicle to the boost mode.

[0222] In some embodiments, when the charging mode is the boost mode, the switching module 1703 is further configured to: maintain the charging mode of the vehicle in the boost mode when the maximum output voltage is equal to the first voltage threshold; maintain the charging mode of the vehicle in the boost mode when the maximum output voltage is equal to the second voltage threshold and the second real-time voltage is greater than or equal to the second voltage threshold; and switch the charging mode of the vehicle from the boost mode to the direct charging mode when the maximum output voltage is equal to the second voltage threshold and the second real-time voltage is less than the second voltage threshold.

[0223] In some embodiments, the switching module 1703 is further configured to: obtain a third real-time voltage of the vehicle; and switch the charging mode of the vehicle from the direct charging mode to the boost mode when the third real-time voltage is greater than the second voltage threshold.

[0224] In some embodiments, the switching module 1703 is further configured to: determine a first target output voltage of the charging device based on the real-time voltage of the vehicle and the maximum output voltage; adjust a first actual output current of the charging device based on the first target output voltage and a preset first target output current; and when the adjusted first actual output current is less than a first current threshold, control the switching from the direct charging mode to the boost mode based on a first control instruction.

[0225] In some embodiments, the switching module 1703 is further configured to: determine a second target voltage based on the real-time voltage of the vehicle and the maximum output voltage of the charging device; determine a second target current based on the charging demand current of the vehicle and the maximum output current of the charging device; adjust a first actual output voltage of the charging device based on the second target voltage and the second target current; and when the adjusted first actual output voltage is greater than or equal to the second target voltage, control the switching from the boost mode to the direct charging mode based on a second control instruction.

[0226] In some embodiments, the method is applied to a charging device; the charging device includes an electric drive power control module and a boost box; the electric drive power control module includes multiple sets of power switch tubes and motor windings; the boost box includes a charging positive relay, a boost relay, a capacitor relay, a charging negative relay, a buck capacitor, and a boost inductor; a first end of the charging positive relay is connected to a first end of the multiple sets of power switch tubes, a second end of the positive switch tube is connected to a first end of the capacitor relay, and a second end of the capacitor relay is connected to a first end of the buck capacitor; a second end of the buck capacitor is connected to a first end of the charging negative relay, and a second end of the charging negative relay is connected to a second end of the multiple sets of power switch tubes; a third end of the multiple sets of power switch tubes is connected to a first end of the motor windings; a second end of the motor windings is connected to a first end of the boost relay, and a second segment of the boost relay is connected to a first end of the capacitor relay; the switching module 1703 is further configured to: based on the first control instruction, control the boost relay and the capacitor relay to switch from an off state to an on state and control the charging positive relay to switch from an on state to an off state; in response to the boost relay and the capacitor relay being in the on state and the charging positive relay being in the off state, generate a first control result, where the first control result indicates that the charging mode of the vehicle switches from a direct charging mode to the boost mode.

[0227] In some embodiments, the switching module 1703 is further configured to: based on the second control instruction, control the charging positive relay to switch from an off state to an on state and control the boost relay and the capacitor relay to switch from an on state to an off state; in response to the boost relay and the capacitor relay being in the off state and the charging positive relay being in the on state, generate a second control result, where the second control result indicates that the charging mode of the vehicle switches from the boost mode to the direct charging mode.

[0228] In some embodiments, the switching module 1703 is further configured to: when the vehicle is in the direct charging mode, based on the maximum output voltage, maximum output current of the charging device, and the real-time voltage and demand current of the vehicle, test the actual output capacity of the charging device to generate a test result; when the test result indicates that the output capacity of the charging device does not meet the preset requirements, switch the direct charging mode to the boost mode; when the test result indicates that the output capacity of the charging device meets the preset requirements, maintain the charging mode of the vehicle in the direct charging mode.

[0229] An embodiment of the present application provides an electronic device, including a memory and a processor. The memory stores a computer program that can run on the processor, and when the processor executes the program, it implements some or all of the steps in the above method.

[0230] An embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements some or all of the steps in the above method. The computer-readable storage medium can be transient or non-transient.

[0231] An embodiment of the present application provides a computer program, including computer-readable code. When the computer-readable code runs in a computer device, the processor in the computer device executes to implement some or all of the steps in the above method.

[0232] An embodiment of the present application provides a computer program product. The computer program product includes a non-transient computer-readable storage medium storing a computer program. When the computer program is read and executed by a computer, it implements some or all of the steps in the above method. The computer program product can be specifically implemented by means of hardware, software, or a combination thereof. In some embodiments, the computer program product is specifically embodied as a computer storage medium. In other embodiments, the computer program product is specifically embodied as a software product, such as a Software Development Kit (SDK), etc.

[0233] It should be noted here that the descriptions of the above embodiments tend to emphasize the differences between the embodiments, and their similarities can be referred to each other. The descriptions of the above device, storage medium, computer program, and computer program product embodiments are similar to the descriptions of the above method embodiments and have similar beneficial effects to the method embodiments. For the technical details not disclosed in the embodiments of the device, storage medium, computer program, and computer program product of the present application, please refer to the descriptions of the method embodiments of the present application for understanding.

[0234] Figure 18 FIG. is a schematic diagram of the hardware entity of an electronic device provided by an embodiment of the present application. As Figure 18 shown, the hardware entity of the electronic device 1800 includes: a processor 1801 and a memory 1802. Among them, the memory 1802 stores a computer program that can run on the processor 1801, and when the processor 1801 executes the program, it implements the steps in the method of any of the above embodiments.

[0235] The memory 1802 stores a computer program that can be run on the processor. The memory 1802 is configured to store instructions and applications executable by the processor 1801, and can also cache data to be processed or already processed by the processor 1801 and each module in the electronic device 1800 (for example, image data, audio data, voice communication data, and video communication data), and can be implemented by flash memory (FLASH) or random access memory (Random Access Memory, RAM).

[0236] When the processor 1801 executes the program, it implements the steps of the method in any one of the above. The processor 1801 generally controls the overall operation of the electronic device 1800.

[0237] The embodiments of the present application provide a computer storage medium. The computer storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps of the method in any one of the above embodiments.

[0238] It should be noted here that the descriptions of the above storage medium and device embodiments are similar to those of the above method embodiments, and have beneficial effects similar to those of the method embodiments. For the technical details not disclosed in the storage medium and device embodiments of the present application, please refer to the descriptions of the method embodiments of the present application for understanding.

[0239] The above processor can be at least one of an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a central processing unit (CPU), a controller, a microcontroller, and a microprocessor. It can be understood that other electronic devices implementing the functions of the above processor are also possible, and the embodiments of the present application do not make specific limitations.

[0240] The above computer storage medium / memory can be a read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), ferromagnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM), etc.; it can also be various terminals including one or any combination of the above memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

[0241] As mentioned above, it is only the implementation mode of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art within the technical scope disclosed by this application can easily think of changes or substitutions, which should all be covered within the protection scope of this application.

Claims

1. A charging method, characterized in that: include: Determining an initial charging mode of the vehicle based on a first real-time voltage and a first voltage threshold of the vehicle; In the initial charging mode, obtaining a second real-time voltage of the vehicle and a maximum output voltage of a charging device; Switching a charging mode of the vehicle between a direct charging mode and a boost mode based on the second real-time voltage and the maximum output voltage; The switching of the charging mode of the vehicle between the direct charging mode and the boost mode includes: A second target voltage is determined based on a second real-time voltage of the vehicle and a maximum output voltage of the charging device; a second target current is determined based on a charging demand current of the vehicle and a maximum output current of the charging device; a first actual output voltage of the charging device is adjusted based on the second target voltage and the second target current; and when the adjusted first actual output voltage is greater than or equal to the second target voltage, the boost mode is controlled to switch to the direct charging mode based on a second control instruction.

2. The method according to claim 1, characterized in that The initial charging mode includes a direct charging mode and a boost mode; the determining the initial charging mode of the vehicle based on the first real-time voltage and the first voltage threshold of the vehicle includes: When the first real-time voltage is less than the first voltage threshold, determining that the initial charging mode is a direct charging mode; When the first real-time voltage is greater than or equal to the first voltage threshold, it is determined that the initial charging mode is a voltage reduction mode.

3. The method according to claim 2, characterized in that The method further comprises: reducing the vehicle voltage based on the voltage reduction mode; When the vehicle voltage is less than the first voltage threshold, in response to the vehicle completing parameter adaptation with a charging device, the charging mode of the vehicle is switched to a boost mode.

4. The method according to claim 3, characterized in that In a case where the charging mode is a boost mode, switching the charging mode of the vehicle between a direct charging mode and a boost mode based on the second real-time voltage and the maximum output voltage includes: When the maximum output voltage is equal to the first voltage threshold, maintaining the charging mode of the vehicle in a boost mode; When the maximum output voltage is equal to a second voltage threshold and the second real-time voltage is greater than or equal to the second voltage threshold, maintaining the charging mode of the vehicle in a boost mode; When the maximum output voltage is equal to a second voltage threshold and the second real-time voltage is less than the second voltage threshold, the charging mode of the vehicle is switched from a boost mode to a direct charging mode.

5. The method according to claim 4, characterized in that The method further comprises: Acquiring a third real-time voltage of the vehicle; When the third real-time voltage is greater than the second voltage threshold, the charging mode of the vehicle is switched from the direct charging mode to the boost mode.

6. The method according to any one of claims 1 to 5, characterized in that The switching of the charging mode of the vehicle between the direct charging mode and the boost mode includes: determining a first target output voltage of the charging device based on a second real-time voltage of the vehicle and the maximum output voltage; adjusting a first actual output current of the charging device based on the first target output voltage and a preset first target output current; When the adjusted first actual output current is less than the first current threshold, the direct charging mode is controlled to switch to the boost mode based on the first control instruction.

7. The method according to any one of claims 1 to 5, characterized in that The method is applied to a charging device; the charging device includes an electric drive power control module and a boost box; the electric drive power control module includes multiple groups of power switch tubes and motor windings; the boost box includes a charging positive relay, a boost relay, a capacitor relay, a charging negative relay, a step-down capacitor and a boost inductor; the first end of the charging positive relay is connected to the first end of the multiple groups of power switch tubes, the second end of the charging positive relay is connected to the first end of the capacitor relay, and the second end of the capacitor relay is connected to the first end of the step-down capacitor; the second end of the step-down capacitor is connected to the first end of the charging negative relay, and the second end of the charging negative relay is connected to the second end of the multiple groups of power switch tubes; the third end of the multiple groups of power switch tubes is connected to the first end of the motor winding; the second end of the motor winding is connected to the first end of the boost inductor, the second section of the boost inductor is connected to the first end of the boost relay, and the second section of the boost relay is connected to the first end of the capacitor relay; the control of switching the direct charging mode to the boost mode based on the first control instruction includes: Based on the first control instruction, the boost relay and the capacitor relay are switched from an open state to a closed state, and the charging positive relay is switched from a closed state to an open state; In response to the boost relay, the capacitor relay being in a closed state, and the charging positive relay being in an open state, a first control result is generated, wherein the first control result indicates that the charging mode of the vehicle is switched from the direct charging mode to the boost mode.

8. The method according to claim 7, characterized in that The controlling the boost mode to switch to the direct charging mode based on the second control instruction includes: Based on the second control instruction, the charging positive relay is controlled to switch from an open state to a closed state, and the boost relay and the capacitor relay are controlled to switch from a closed state to an open state; In response to the boost relay and the capacitor relay being in an open state and the charging positive relay being in a closed state, a second control result is generated, wherein the second control result indicates that the charging mode of the vehicle is switched from the boost mode to the direct charging mode.

9. The method according to any one of claims 1 to 5, characterized in that The method further comprises: When the vehicle is in direct charging mode, based on the maximum output voltage and maximum output current of the charging device and the real-time voltage and required current of the vehicle, the actual output capacity of the charging device is tested to generate a test result; If the test result indicates that the output capacity of the charging device does not meet the preset requirement, switching the direct charging mode to the boost mode; When the test result indicates that the output capacity of the charging device meets the preset requirement, the charging mode of the vehicle is maintained in the direct charging mode.

10. A charging system, characterized in that: include: a determination module, configured to determine an initial charging mode of the vehicle based on a first real-time voltage and a first voltage threshold of the vehicle; An acquisition module, configured to acquire, in the initial charging mode, a second real-time voltage of the vehicle and a maximum output voltage of a charging device; a switching module, configured to switch a charging mode of the vehicle between a direct charging mode and a boost mode based on the second real-time voltage and the maximum output voltage; The switching module is further configured to determine a second target voltage based on a second real-time voltage of the vehicle and a maximum output voltage of the charging device; determine a second target current based on a charging demand current of the vehicle and a maximum output current of the charging device; and adjust a first actual output voltage of the charging device based on the second target voltage and the second target current; When the adjusted first actual output voltage is greater than or equal to the second target voltage, the boost mode is controlled to switch to the direct charging mode based on the second control instruction.

11. An electronic device comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor executes the program, the steps in the method according to any one of claims 1 to 9 are implemented.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 9 are implemented.

13. A computer program product comprising a computer program or instructions, characterized in that When the computer program or instruction is executed by a processor, the steps in the method according to any one of claims 1 to 9 are implemented.

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