Method, device, processor and electronic device for controlling a charging stack

Abstract

The application discloses a charging pile control method, device, processor and electronic equipment. The method comprises the following steps: in response to a target charging gun of at least one charging gun of a charging pile being connected to a vehicle, determining an initial output voltage required by the charging pile at a current time, and a target output voltage required by the charging pile to end charging the vehicle, wherein the target charging gun is any charging gun of the at least one charging gun; determining a switching strategy to be executed by a plurality of first conversion modules in a first charging port based on a remaining capacity of the first charging port, the initial output voltage and the target output voltage; determining at least one target conversion module from the first conversion modules and second conversion modules based on the remaining capacity and the switching strategy; and controlling the target conversion module to charge the vehicle until detecting that a power state of the vehicle reaches a full power state. The application solves the technical problem of low working efficiency of a charging module of the charging pile.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric power, in particular to a control method and device of a charging pile, a processor and an electronic device. BACKGROUND

[0002] At present, in the control process of the charging pile, the prior art often uses the parallel switching mode of the power module to adapt to the charging requirements of different electric vehicles.

[0003] However, the above parallel switching mode completely depends on the voltage regulation capability of the current converter itself, thereby causing the technical problem of low working efficiency of the charging module of the charging pile.

[0004] At present, no effective solution has been proposed for the above technical problem of low working efficiency of the charging module of the charging pile. SUMMARY

[0005] The embodiments of the present application provide a control method and device of a charging pile, a processor and an electronic device to at least solve the technical problem of low working efficiency of the charging module of the charging pile.

[0006] According to an aspect of the embodiments of the present application, a control method of a charging pile is provided, which comprises: in response to a target charging gun of at least one charging gun of the charging pile having been connected to a vehicle, determining an initial output voltage required by the charging pile at a current time and a target output voltage required by the charging pile to end charging the vehicle, wherein the target charging gun is any charging gun of the at least one charging gun; based on a remaining capacity of a first charging port where the target charging gun is located, the initial output voltage and the target output voltage, determining a switching strategy to be executed by a plurality of first conversion modules in the first charging port, wherein the switching strategy is at least used to represent a connection rule between the plurality of first conversion modules and / or a connection rule between the plurality of first conversion modules and a plurality of second conversion modules in a second charging port, the second charging port being located at a position different from that of the first charging port in the charging pile; based on the remaining capacity and the switching strategy, determining at least one target conversion module from the first conversion modules and the second conversion modules; and controlling the target conversion module to charge the vehicle until detecting that the state of charge of the vehicle reaches a full charge state.

[0007] Optionally, based on the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage and the target output voltage, determining the switching strategy to be executed by the plurality of first conversion modules in the first charging port comprises: determining a power supply voltage to be output by the plurality of first conversion modules to the vehicle; and based on the remaining capacity, the power supply voltage, the initial output voltage and the target output voltage, determining the switching strategy.

[0008] Optionally, the switching strategy is determined based on the residual capacity, the supply voltage, the initial output voltage and the target output voltage, including: in response to the residual capacity satisfying a required power of the vehicle, comparing the supply voltage, the initial output voltage and the target output voltage to obtain a comparison result, wherein the required power represents a power difference between a current power state and a full power state of the vehicle at the current time, and the comparison result represents a relationship between the supply voltage, the initial output voltage and the target output voltage; and determining the switching strategy based on the comparison result.

[0009] Optionally, the switching strategy is determined based on the comparison result, including: in response to the comparison result being that the supply voltage is less than the initial output voltage, and the initial output voltage is less than the target output voltage, determining the switching strategy as a first switching strategy, wherein the first switching strategy represents a connection rule between the plurality of first conversion modules as a series connection rule, and / or a connection rule between the plurality of first conversion modules and the plurality of second conversion modules as a series connection rule; in response to the comparison result being that the supply voltage is greater than the initial output voltage, the supply voltage is less than the target output voltage, and an initial output current required by the charging pile at the current time is less than a supply current to be output by the plurality of first conversion modules to the vehicle, determining the switching strategy as a second switching strategy, wherein the second switching strategy represents that before a voltage of the vehicle reaches the supply voltage, charging the vehicle by using any one of the plurality of first conversion modules, and after the voltage of the vehicle reaches the supply voltage, determining the connection rule between the plurality of first conversion modules as the series connection rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules as the series connection rule; in response to the comparison result being that the supply voltage is greater than the initial output voltage, the supply voltage is less than the target output voltage, and the initial output current required by the charging pile at the current time is greater than the supply current to be output by the plurality of first conversion modules to the vehicle, determining the switching strategy as a third switching strategy, wherein the third switching strategy represents that before the voltage of the vehicle reaches the supply voltage, determining the connection rule between the plurality of first conversion modules as a parallel connection rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules as the parallel connection rule, and after the voltage of the vehicle reaches the supply voltage, determining the connection rule between the plurality of first conversion modules as the series connection rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules as the series connection rule; and in response to the comparison result being that the supply voltage is greater than the target output voltage, and the initial output voltage is less than the target output voltage, determining the switching strategy as a fourth switching strategy, wherein the fourth switching strategy represents charging the vehicle by using any one of the plurality of first conversion modules, or determining the connection rule between the plurality of first conversion modules as the parallel connection rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules as the parallel connection rule.

[0010] Optionally, determining the at least one target conversion module from the first conversion modules and the second conversion modules based on the residual capacity and the switching strategy comprises: in response to the residual capacity satisfying a required power of the vehicle, determining the at least one target conversion module from the first conversion modules and the second conversion modules based on the switching strategy, wherein the required power is used to represent a power difference between a current power state of the vehicle and a full power state.

[0011] Optionally, determining the at least one target conversion module from the first conversion modules and the second conversion modules based on the switching strategy comprises: determining a target number of target conversion modules corresponding to the switching strategy, wherein the target conversion modules comprise first target conversion modules and second target conversion modules; determining the first target conversion modules satisfying the target number from the first conversion modules, and determining the second target conversion modules satisfying the target number from the second conversion modules, wherein the target number is a sum of a number of the first target conversion modules and a number of the second target conversion modules.

[0012] According to an aspect of an embodiment of the present application, a control device of a charging pile is provided, which can comprise: a first determination unit configured to determine an initial output voltage required by the charging pile at a current time and a target output voltage required by the charging pile to end charging of a vehicle in response to a target charging gun of at least one charging gun of the charging pile being connected to the vehicle, wherein the target charging gun is any charging gun of the at least one charging gun; a second determination unit configured to determine a switching strategy to be executed by a plurality of first conversion modules in a first charging port based on a residual capacity of the first charging port where the target charging gun is located, the initial output voltage and the target output voltage, wherein the switching strategy is used to at least represent a connection rule between the plurality of first conversion modules and / or a connection rule between the plurality of first conversion modules and a plurality of second conversion modules in a second charging port, the second charging port being located at a position of the charging pile different from a position of the first charging port of the charging pile; a third determination unit configured to determine at least one target conversion module from the first conversion modules and the second conversion modules based on the residual capacity and the switching strategy; and a charging unit configured to control the target conversion module to charge the vehicle until it is detected that a power state of the vehicle reaches a full power state.

[0013] According to another aspect of an embodiment of the present application, a processor is further provided. The processor is configured to run a program, wherein the program is executed to perform the control method of the charging pile in the embodiment of the present application when the program is run by the processor.

[0014] According to another aspect of an embodiment of the present application, an electronic device is further provided, which comprises: a memory storing an executable program; and a processor configured to run the program, wherein the program is executed to perform the control method of the charging pile in various embodiments of the present application when the program is run.

[0015] According to another aspect of the embodiments of the present application, a computer readable storage medium is also provided. The computer readable storage medium includes a stored program, wherein the program, when executed by a device in which the computer readable storage medium is located, controls the device to perform the control method of the charging pile.

[0016] According to another aspect of the embodiments of the present application, a computer program product is also provided. The computer program product includes a computer program, wherein the computer program, when executed by a processor, implements the control method of the charging pile.

[0017] According to another aspect of the embodiments of the present application, a computer program product is also provided. The computer program product includes a non-volatile computer readable storage medium for storing a computer program, wherein the computer program, when executed by a processor, implements the control method of the charging pile.

[0018] According to another aspect of the embodiments of the present application, a computer program is also provided. The computer program, when executed by a processor, implements the control method of the charging pile.

[0019] In the embodiments of the present application, when the charging pile is controlled, in response to a target charging gun of at least one charging gun of the charging pile being connected to a vehicle, an initial output voltage required by the charging pile at a current time and a target output voltage required by the charging pile to end charging the vehicle can be determined. According to a remaining capacity of a first charging port in which the target charging gun is located, the initial output voltage and the target output voltage, a switching strategy to be executed by a plurality of first conversion modules in the first charging port can be determined. According to the remaining capacity of the first charging port and the determined switching strategy, at least one target conversion module can be determined from the first conversion modules and second conversion modules, and the determined target conversion module is controlled to charge the vehicle until it is detected that a state of charge of the vehicle reaches a full charge state. Thus, the purpose of controlling the charging pile to perform constant current charging on the electric vehicle with large current and constant voltage charging on the electric vehicle with high voltage is achieved, thereby solving the technical problem of low working efficiency of the charging modules of the charging pile, and further achieving the technical effect of improving the working efficiency of the charging modules of the charging pile. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0021] Figure 1 is a flowchart of a control method of a charging pile according to an embodiment of the present application;

[0022] Fig. 2(a) is a flow chart of a charging method based on a flexible charging stack according to an embodiment of the present application;

[0023] Fig. 2(b) is a schematic diagram of a topology of a flexible charging station according to an embodiment of the present application;

[0024] Fig. 3(a) is a flow chart of a charging method based on a switching strategy according to an embodiment of the present application;

[0025] Fig. 3(b) is a flow chart of another charging method based on a switching strategy according to an embodiment of the present application;

[0026] Fig. 3(c) is a flow chart of yet another charging method based on a switching strategy according to an embodiment of the present application;

[0027] Fig. 3(d) is a flow chart of yet another charging method based on a switching strategy according to an embodiment of the present application;

[0028] Fig. 3(e) is a schematic diagram of a control structure of a DC-DC module according to an embodiment of the present application;

[0029] Fig. 3(f) is a schematic diagram of another control structure of a DC-DC module according to an embodiment of the present application;

[0030] Fig. 4(a) is a schematic diagram of a charging port according to an embodiment of the present application;

[0031] Fig. 4(b) is a schematic diagram of another charging port according to an embodiment of the present application;

[0032] Figure 5 is a schematic diagram of a control device of a charging stack according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to make the personnel in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by the personnel in the art without creative labor should belong to the protection scope of the present application.

[0034] It is to be understood that the terms "first", "second", and the like, used in the description and the claims of the application and the above description of the drawings, are used to differentiate between similar objects, and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the use of data so designated is not to be construed to limit the present application to the precise embodiments illustrated or described, and that such embodiments are presented by way of example and not limitation. Furthermore, the use of the terms "including", "comprising", and "having" and variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, product, or apparatus that comprises a list of steps or units is not necessarily limited to those steps or units which are expressly listed, but can include other steps or units not expressly listed or inherent to such process, method, product, or apparatus.

[0035] According to an embodiment of the present application, a control method of a charging pile is provided. It is to be understood that the steps shown in the flowcharts of the drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0036] Figure 1 is a flowchart of a control method of a charging pile according to an embodiment of the present application, which can include the following steps:

[0037] In step S101, in response to a target charging gun of at least one charging gun of the charging pile being connected to a vehicle, the initial output voltage required by the charging pile at the current time is determined, and the target output voltage required by the charging pile to end the charging of the battery is determined.

[0038] In the technical solution provided in step S101 of the present application, the target charging gun can be any charging gun of the at least one charging gun.

[0039] In this embodiment, in response to the target charging gun of the at least one charging gun of the charging pile being connected to the vehicle, the initial output voltage required by the charging pile at the current time is determined, and the target output voltage required by the charging pile to end the charging of the vehicle is determined. Alternatively, in the case that the target charging gun of the at least one charging gun of the charging pile is connected to the vehicle, the initial charging voltage required by the vehicle at the current time and the target charging voltage required by the state of charge of the vehicle to reach the full charge state can be determined from the attribute information of the vehicle, and the determined initial charging voltage is determined as the initial output voltage required by the charging pile at the current time, and the determined target charging voltage is determined as the target output voltage required by the charging pile to end the charging of the vehicle. The attribute information of the vehicle can be used to represent the characteristics represented by the respective devices of the vehicle at the current time. For example, the respective devices of the vehicle can include at least one of the following devices: battery, air conditioner, brake pad, generator, etc., which are only used as examples and are not limited in particular.

[0040] Alternatively, in the case that the target charging gun of the at least one charging gun of the charging pile is connected to the battery of the vehicle, the initial charging voltage required by the vehicle at the current time and the target charging voltage required by the state of charge of the vehicle to reach the full charge state can be determined from the attribute information of the vehicle. For example, in the case that the target charging gun of the charging pile is connected to the vehicle, the attribute information of the vehicle is screened to obtain the initial charging voltage required by the vehicle at the current time and the target charging voltage required by the state of charge of the vehicle to reach the full charge state, which are only used as examples and are not limited in particular.

[0041] In step S102, based on the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage and the target output voltage, the switching strategy to be executed by the plurality of first conversion modules in the first charging port is determined.

[0042] In the technical solution provided by the above step S102 of the present application, the switching strategy can at least represent the connection rule between the plurality of first conversion modules, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules in the second charging port. The position of the second charging port in the charging pile can be different from the position of the first charging port in the charging pile. For example, the first conversion module and the second conversion module can be direct current (DC)-DC conversion modules, and the position of the second charging port in the charging pile can be adjacent to the position of the first charging port in the charging pile, which are only used as examples and are not limited in particular.

[0043] In this embodiment, after determining the initial output voltage required by the charging pile at the current time and the target output voltage required by the charging pile to end charging the vehicle in response to the target charging gun in at least one charging gun of the charging pile having accessed the vehicle, a switching strategy to be executed by the plurality of first conversion modules in the first charging port is determined based on the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage and the target output voltage. Optionally, based on the initial output voltage required by the charging pile at the current time and the target output voltage required by the charging pile to end charging the vehicle, whether the remaining capacity of the first charging port meets the required power of the vehicle is judged, and if it is judged that the remaining capacity of the first charging port can meet the required power of the vehicle, the switching strategy to be executed by the plurality of first conversion modules in the first charging port can be determined according to the determined initial output voltage and target output voltage. The required power of the vehicle can be used to represent the power difference between the power state at the current time and the full power state of the vehicle.

[0044] It should be noted that the above first charging port and the above second charging port can include at least one alternating current (AC) to direct current (DC) conversion module and a plurality of DC-DC conversion modules, which are only used as examples and are not limited.

[0045] In step S103, at least one target conversion module is determined from the first conversion module and the second conversion module based on the remaining capacity and the switching strategy.

[0046] In the technical solution provided by the above step S103 of the present application, the target conversion module can be a DC-DC conversion module, which is only used as an example and is not limited.

[0047] In this embodiment, after determining the switching strategy to be executed by the plurality of first conversion modules in the first charging port based on the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage and the target output voltage, at least one target conversion module is determined from the first conversion module and the second conversion module based on the remaining capacity and the switching strategy. Optionally, based on the determined switching strategy to be executed by the plurality of first conversion modules in the first charging port, whether the remaining capacity of the first charging port meets the required power of the vehicle is judged, and if it is judged that the remaining capacity of the first charging port can meet the required power of the vehicle, at least one target conversion module can be determined from the first conversion module and the second conversion module according to the determined switching strategy to be executed by the first conversion module, which is only used as an example and is not limited.

[0048] In step S104, the control target conversion module charges the vehicle until the state of charge of the vehicle reaches the full state.

[0049] In the above technical solution of step S104 of the present application, after determining at least one target conversion module from the first conversion module and the second conversion module based on the residual capacity and the switching strategy, the target conversion module is controlled to charge the vehicle until the state of charge of the vehicle reaches the full state. Alternatively, based on the determination of the target conversion module, the target conversion module is controlled to charge the vehicle according to the charging strategy until the state of charge of the vehicle reaches the full state. The charging strategy can include a constant voltage charging strategy and a constant current charging strategy. The voltage of the target conversion module under the constant voltage charging strategy can be determined based on the voltage required for constant voltage charging of the vehicle battery and the number of series connections of the target conversion module. The current of the target conversion module under the constant current charging strategy can be determined based on the current required for constant current charging of the vehicle battery and the number of parallel connections of the target conversion module.

[0050] In this embodiment, the target conversion module is controlled to charge the vehicle according to the charging strategy until the state of charge reaches the full state. Alternatively, if the charging strategy is a constant voltage charging strategy, the target conversion module is controlled to output a voltage determined based on the voltage required for constant voltage charging of the vehicle battery and the number of series connections of the target conversion module to charge the vehicle until the state of charge of the vehicle reaches the full state. Or, if the charging strategy is a constant current charging strategy, the target conversion module is controlled to output a current determined based on the current required for constant current charging of the vehicle battery and the number of parallel connections of the target conversion module to charge the battery until the state of charge of the battery reaches the full state.

[0051] The above steps S101 to S104 of the present application, when controlling the charging pile, in response to the target charging gun of at least one charging gun of the charging pile having accessed the vehicle, the initial output voltage required by the charging pile at the current time can be determined, and the target output voltage required by the charging pile to end the charging of the vehicle. According to the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage and the target output voltage, the switching strategy to be executed by the plurality of first conversion modules in the first charging port can be determined. According to the remaining capacity of the above-mentioned first charging port and the determined switching strategy, at least one target conversion module can be determined from the first conversion module and the second conversion module, and the determined target conversion module is controlled to charge the vehicle until the state of charge of the vehicle is detected to reach the full charge state, thereby achieving the purpose that the charging pile can control the constant current charging of the electric vehicle with large current and the constant voltage charging of the electric vehicle with high voltage, thereby solving the technical problem of low working efficiency of the charging module of the charging pile, and further realizing the technical effect that the working efficiency of the charging module of the electric charging pile can be improved.

[0052] The above method of the embodiment will be further introduced below.

[0053] As an optional embodiment, in step S102, based on the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage and the target output voltage, the switching strategy to be executed by the plurality of first conversion modules in the first charging port is determined, including: determining the power supply voltage to be output by the plurality of first conversion modules to the vehicle; and determining the switching strategy based on the remaining capacity, the power supply voltage, the initial output voltage and the target output voltage.

[0054] In this embodiment, the above-mentioned power supply voltage can be used to represent the highest voltage to be output by the DC-DC module to the vehicle. For example, the highest voltage to be output by the DC-DC module to the vehicle can be represented by V0, which is only illustrative and not limited.

[0055] In this embodiment, after determining the initial output voltage required by the charging pile at the current time and the target output voltage required by the charging pile to end the charging of the vehicle in response to the target charging gun of at least one charging gun of the charging pile having accessed the vehicle, the power supply voltage to be output by the plurality of first conversion modules to the vehicle is determined. Alternatively, based on the determination of the initial output voltage required by the charging pile at the current time and the target output voltage required by the charging pile to end the charging of the battery, the power supply voltage to be output by the plurality of first conversion modules to the vehicle can be determined, for example, the highest voltage to be output by the DC-DC module to the vehicle can be determined, which is only illustrative and not limited.

[0056] In this embodiment, after determining the power supply voltage to be output by the plurality of first conversion modules to the vehicle, the switching strategy is determined based on the residual capacity, the power supply voltage, the initial output voltage and the target output voltage. Optionally, this embodiment determines whether the residual capacity of the first charging port satisfies the required power of the vehicle based on the determined power supply voltage. If it is determined that the residual capacity of the first charging port can satisfy the required power of the vehicle, the switching strategy to be executed by the plurality of first conversion modules in the first charging port can be determined according to the power supply voltage to be output by the plurality of first conversion modules to the vehicle, the initial output voltage required by the charging pile at the current time, and the target output voltage required by the charging pile to end the charging of the battery.

[0057] As an optional embodiment, the switching strategy is determined based on the residual capacity, the power supply voltage, the initial output voltage and the target output voltage, including: in response to the residual capacity satisfying the required power of the vehicle, comparing the power supply voltage, the initial output voltage and the target output voltage to obtain a comparison result; and determining the switching strategy based on the comparison result.

[0058] In this embodiment, the required power can be used to represent the power difference between the power state of the vehicle at the current time and the full power state. The comparison result can be used to represent the relationship between the power supply voltage, the initial output voltage and the target output voltage. For example, the comparison result can be that the power supply voltage is less than the initial output voltage, and the initial output voltage is less than the target output voltage, or the power supply voltage is greater than the initial output voltage, the power supply voltage is less than the target output voltage, or the power supply voltage is greater than the target output voltage, and the initial output voltage is less than the target output voltage. Herein, only examples are given, and are not limited in particular.

[0059] In this embodiment, after determining the power supply voltage to be output by the plurality of first conversion modules to the vehicle, the switching strategy is determined based on the residual capacity, the power supply voltage, the initial output voltage and the target output voltage. Optionally, this embodiment determines whether the residual capacity of the first charging port satisfies the required power of the vehicle based on the determined power supply voltage. If it is determined that the residual capacity of the first charging port can satisfy the required power of the vehicle, the switching strategy to be executed by the plurality of first conversion modules in the first charging port can be determined according to the power supply voltage to be output by the plurality of first conversion modules to the vehicle, the initial output voltage required by the charging pile at the current time, and the target output voltage required by the charging pile to end the charging of the battery.

[0060] In this embodiment, after comparing the supply voltage, the initial output voltage and the target output voltage in response to the remaining capacity satisfying the required power of the vehicle, obtaining a comparison result, and based on the comparison result, the switching strategy is determined. Alternatively, this embodiment analyzes the obtained comparison result based on the comparison result, and according to the relationship between the above three voltages analyzed, the switching strategy can be determined.

[0061] It should be noted that the above switching strategy can include: a first switching strategy, a second switching strategy, a third switching strategy and a fourth switching strategy. Among them, the first switching strategy can be used to represent the connection rule between the plurality of first conversion modules as a series rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules as a series rule. The second switching strategy can be used to represent that before the voltage of the vehicle reaches the supply voltage, any one of the plurality of first conversion modules is used to charge the vehicle, and after the voltage of the vehicle reaches the supply voltage, the connection rule between the plurality of first conversion modules is determined as a series rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is determined as a series rule. The third switching strategy can be used to represent that before the voltage of the vehicle reaches the supply voltage, the connection rule between the plurality of first conversion modules is determined as a parallel rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is determined as a parallel rule, and after the voltage of the vehicle reaches the supply voltage, the connection rule between the plurality of first conversion modules is determined as a series rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is determined as a series rule. The fourth switching strategy can be used to represent that any one of the plurality of first conversion modules is used to charge the vehicle, or the connection rule between the plurality of first conversion modules is determined as a parallel rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is determined as a parallel rule.

[0062] As an optional embodiment, based on the comparison result, the switching strategy is determined, including: in response to the comparison result that the supply voltage is less than the initial output voltage, and the initial output voltage is less than the target output voltage, determining the switching strategy as the first switching strategy; in response to the comparison result that the supply voltage is greater than the initial output voltage, the supply voltage is less than the target output voltage, and the initial output current required by the charging pile at the current time is less than the supply current to be output by the plurality of first conversion modules to the vehicle, determining the switching strategy as the second switching strategy; in response to the comparison result that the supply voltage is greater than the initial output voltage, the supply voltage is less than the target output voltage, and the initial output current required by the charging pile at the current time is greater than the supply current to be output by the plurality of first conversion modules to the vehicle, determining the switching strategy as the third switching strategy; in response to the comparison result that the supply voltage is greater than the target output voltage, and the initial output voltage is less than the target output voltage, determining the switching strategy as the fourth switching strategy.

[0063] In this embodiment, the initial charging voltage can be represented by V1, the target charging voltage can be represented by V2, the initial charging current can be represented by I1, and the supply current can be represented by I0, which are only illustrative and not limited.

[0064] In this embodiment, after the supply voltage, the initial output voltage and the target output voltage are compared in response to the remaining capacity meeting the required power of the vehicle, and the comparison result is obtained, in response to the comparison result that the supply voltage is less than the initial output voltage, and the initial output voltage is less than the target output voltage, the switching strategy is determined as the first switching strategy. Alternatively, based on the obtained comparison result, the obtained comparison result is analyzed, and if it is analyzed that the obtained comparison result is that the supply voltage is less than the initial output voltage, and the initial output voltage is less than the target output voltage, the switching strategy is determined as the first switching strategy. For example, if it is analyzed that the obtained comparison result is V0<V1<V2, the switching strategy is determined as the first switching strategy, that is, the connection rule between the plurality of first conversion modules is determined as the series connection rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is determined as the series connection rule.

[0065] In this embodiment, after comparing the supply voltage, the initial output voltage and the target output voltage in response to the remaining capacity satisfying the required power of the vehicle to obtain a comparison result, the switching strategy is determined as the second switching strategy in response to the comparison result being that the supply voltage is greater than the initial output voltage, the supply voltage is less than the target output voltage, and the initial output current required by the vehicle at the current time is less than the supply current to be output by the plurality of first conversion modules. Optionally, this embodiment analyzes the obtained comparison result on the basis of the obtained comparison result, and if it is analyzed that the obtained comparison result is that the supply voltage is greater than the initial output voltage, and the supply voltage is less than the target output voltage, then the relationship between the initial charging current and the supply current is judged, and if it is judged that the initial output current is less than the supply current, then the switching strategy is determined as the second switching strategy. For example, if it is analyzed that the obtained comparison result is V1

[0066] In this embodiment, after comparing the supply voltage, the initial output voltage and the target output voltage in response to the remaining capacity satisfying the required power of the vehicle to obtain a comparison result, the switching strategy is determined as the third switching strategy in response to the comparison result being that the supply voltage is greater than the initial output voltage, the supply voltage is less than the target output voltage, and the initial output current required by the charging pile at the current time is greater than the supply current to be output by the plurality of first conversion modules. Optionally, this embodiment analyzes the obtained comparison result on the basis of the obtained comparison result, and if it is analyzed that the obtained comparison result is that the supply voltage is greater than the initial output voltage, and the supply voltage is less than the target output voltage, then the relationship between the initial output current and the supply current is judged, and if it is judged that the initial output current is greater than the supply current, then the switching strategy is determined as the third switching strategy. For example, if it is analyzed that the obtained comparison result is V1

[0067] In this embodiment, after the comparison result is obtained by comparing the supply voltage, the initial output voltage and the target output voltage in response to the remaining capacity satisfying the required power of the vehicle, the switching strategy is determined as the fourth switching strategy in response to the comparison result being that the supply voltage is greater than the target output voltage and the initial output voltage is less than the target output voltage. Alternatively, the obtained comparison result is analyzed on the basis of the comparison result, and if it is analyzed that the obtained comparison result is that the supply voltage is greater than the target output voltage and the initial output voltage is less than the target output voltage, the switching strategy is determined as the fourth switching strategy. For example, if it is analyzed that the obtained comparison result is V0>V1>V2, the switching strategy is determined as the fourth switching strategy, that is, the vehicle is charged by using any one of the plurality of first conversion modules, or the connection rule between the plurality of first conversion modules and the connection rule between the plurality of first conversion modules and the plurality of second conversion modules are determined as the parallel connection rule.

[0068] As an optional embodiment, the step S103 of determining at least one target conversion module from the first conversion module and the second conversion module based on the remaining capacity and the switching strategy includes: in response to the remaining capacity satisfying the required power of the vehicle, determining at least one target conversion module from the first conversion module and the second conversion module based on the switching strategy.

[0069] In this embodiment, the required power can be used to represent the power difference between the power state of the vehicle at the current time and the full power state.

[0070] In this embodiment, after the switching strategy to be executed by the plurality of first conversion modules in the first charging port is determined based on the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage and the target output voltage, at least one target conversion module is determined from the first conversion module and the second conversion module based on the switching strategy in response to the remaining capacity satisfying the required power of the vehicle. Alternatively, on the basis of the determination of the switching strategy to be executed by the plurality of first conversion modules in the first charging port, it is judged whether the remaining capacity of the first charging port can satisfy the required power of the vehicle, and if it is judged that the remaining capacity of the first charging port can satisfy the required power of the vehicle, the target number of target conversion modules corresponding to the switching strategy to be executed by the first conversion module can be determined, so that at least one target conversion module can be determined from the first conversion module and the second conversion module.

[0071] As an optional embodiment, the at least one target conversion module is determined from the first conversion modules and the second conversion modules based on the switching strategy, including: determining a target number of target conversion modules corresponding to the switching strategy; determining a first target conversion module satisfying the target number from the first conversion modules, and determining a second target conversion module satisfying the target number from the second conversion modules.

[0072] In this embodiment, the target conversion modules can include the first target conversion module and the second target conversion module. The first target conversion module can be any conversion module in the first conversion modules, and the second target conversion module can be any conversion module in the second conversion modules.

[0073] In this embodiment, the target number can be the sum of the number of the first target conversion modules and the number of the second target conversion modules. The number of the first target conversion modules can be a positive integer greater than or equal to 1, and the number of the second target conversion modules can be a natural number greater than or equal to 0.

[0074] In this embodiment, after determining the switching strategy to be performed by the plurality of first conversion modules in the first charging port based on the residual capacity of the first charging port where the target charging gun is located, the initial charging voltage, and the target charging voltage, the target number of target conversion modules corresponding to the switching strategy is determined. Alternatively, based on the determination of the switching strategy to be performed by the plurality of first conversion modules in the first charging port, if the switching strategy is the first switching strategy, the target number of target conversion modules corresponding to the first switching strategy can be determined, if the switching strategy is the second switching strategy, the target number of target conversion modules corresponding to the second switching strategy can be determined, if the switching strategy is the third switching strategy, the target number of target conversion modules corresponding to the third switching strategy can be determined, and if the switching strategy is the fourth switching strategy, the target number of target conversion modules corresponding to the fourth switching strategy can be determined.

[0075] In this embodiment, if the switching strategy is the first switching strategy, the target number of target conversion modules corresponding to the first switching strategy is the number of series of DC-DC modules, where the number of series of DC-DC modules can be represented by formula (1) below. In the switching matrix network, the vehicle is charged by using N2 DC-DC modules in series until the state of charge of the vehicle reaches the full charge state.

[0076]

[0077] In this embodiment, if the switching strategy is the second switching strategy, the target number of target conversion modules corresponding to the second switching strategy is determined as the number of series of DC-DC modules, which can be represented by the above formula (1). Before the voltage of the vehicle reaches V0, the vehicle is charged in the switching matrix network using a single DC-DC module. After the voltage of the vehicle reaches V0, the remaining N2-1 DC-DC modules are connected in series with the single DC-DC module in the switching matrix network, and the vehicle is charged using the series of N2 DC-DC modules until the state of charge of the vehicle reaches the full state.

[0078] In this embodiment, if the switching strategy is the third switching strategy, the target number of target conversion modules corresponding to the third switching strategy is determined as the number of series of DC-DC modules required for the vehicle to reach the full state and the number of parallel connection of DC-DC modules required for high-current charging, wherein the number of series of DC-DC modules can be represented by the above formula (1), and the number of parallel connection of DC-DC modules can be represented by the following formula (2). If N1

[0079]

[0080] If N1>N2, before the voltage of the vehicle reaches V0, the vehicle is charged in the switching matrix network using the parallel connection of N1 DC-DC modules. After the voltage of the vehicle reaches V0, the N2 DC-DC modules are connected in series in the switching matrix network, and the vehicle is charged using the series of N2 DC-DC modules until the state of charge of the vehicle reaches the full state, while the N1-N2 excess DC-DC modules are released as idle modules.

[0081] If N1=N2, before the voltage of the vehicle reaches V0, all DC-DC modules are connected in parallel in the switching matrix network, and the vehicle is charged using the parallel connection of all DC-DC modules. After the voltage of the vehicle reaches V0, all DC-DC modules are connected in series in the switching matrix network, and the vehicle is charged using the series of all DC-DC modules until the state of charge of the vehicle reaches the full state.

[0082] In this embodiment, if the switching strategy is the fourth switching strategy, the target number of target conversion modules corresponding to the fourth switching strategy is determined as the parallel number of DC-DC modules, which can be represented by the above formula (2). In the switching matrix network, the vehicle is charged by the N1 DC-DC modules in parallel until the state of charge of the vehicle reaches the full charge state.

[0083] In this embodiment, after determining the target number of target conversion modules corresponding to the switching strategy, the first target conversion module satisfying the target number is determined from the first conversion modules, and the second target conversion module satisfying the target number is determined from the second conversion modules. Alternatively, based on the determination of the target number of target conversion modules corresponding to the switching strategy, the first target conversion module satisfying the target number can be determined from the first conversion modules, and the second target conversion module satisfying the target number can be determined from the second conversion modules.

[0084] In the embodiment of the application, when the charging pile is controlled, in response to a target charging gun of at least one charging gun of the charging pile being connected to the vehicle, an initial output voltage required by the charging pile at the current time and a target output voltage required by the charging pile to end charging the vehicle can be determined. According to the remaining capacity of the first charging port in which the target charging gun is located, the initial output voltage and the target output voltage, a switching strategy to be executed by a plurality of first conversion modules in the first charging port can be determined. According to the remaining capacity of the first charging port and the determined switching strategy, at least one target conversion module can be determined from the first conversion modules and the second conversion modules, and the determined target conversion module is controlled to charge the vehicle until it is detected that the state of charge of the vehicle reaches the full charge state, thereby achieving the purpose of being able to control the charging pile to perform constant current charging of large current and constant voltage charging of high voltage on the electric vehicle, thereby solving the technical problem of low working efficiency of the charging modules of the charging pile, and further achieving the technical effect of being able to improve the working efficiency of the charging modules of the charging pile.

[0085] The technical solutions of the embodiments of the application will be illustrated below in conjunction with preferred embodiments.

[0086] At present, in the control process of the charging pile, since the power of the charging pile is fixed, it is difficult to be compatible with charging of multiple vehicle models. In the prior art, the power module is often connected in parallel to meet the charging needs of different electric vehicles.

[0087] However, the above parallel connection mode completely depends on the voltage regulation capability of the current converter itself, thereby causing the technical problem of low working efficiency of the charging modules of the charging pile.

[0088] To solve the above technical problems, the embodiment of the present application provides a control method of a charging stack, according to the residual capacity of the first charging port where the target charging gun is located, the initial output voltage and the target output voltage, different DC-DC module switching strategies to be adopted can be determined. According to different DC-DC module switching strategies, the idle DC-DC module is determined, and combined with the constant voltage and constant current two-stage charging strategy, the idle DC-DC module is used to charge the vehicle, so as to achieve the purpose of controlling the charging stack to perform constant current charging of large current on the electric vehicle and constant voltage charging of high voltage on the electric vehicle, thereby solving the technical problem of low working efficiency of the charging module of the charging stack, and further realizing the technical effect of improving the working efficiency of the charging module of the electric charging stack.

[0089] In this embodiment, by the charging method based on the flexible charging stack, the determined target conversion module can be controlled to charge the vehicle until the state of charge of the vehicle is detected to reach the full charge state. For example, FIG. 2(a) is a flowchart of a charging method based on a flexible charging stack according to an embodiment of the present application, as shown in FIG. 2(a), the method can include the following steps:

[0090] In step S201, the voltage and current required for charging the vehicle are obtained.

[0091] In the technical solution provided in the above step S201 of the present application, in the case that the electric vehicle is detected to access the target charging gun, the current state information of the battery of the electric vehicle and the voltage V2 required for the battery to be fully charged can be obtained through communication, and the battery state is monitored in real time. The current state information of the battery can at least include the initial charging voltage V1 and the initial charging current I1 required for the current charging of the battery.

[0092] After obtaining the voltage and current required for charging the vehicle, step S202 is entered, and the switching strategy is determined according to the residual capacity of the first charging port where the target charging gun is located, the voltage and current required for charging the battery, and the charging demand of the battery of the vehicle.

[0093] In the technical solution provided in the above step S202 of the present application, according to the initial charging voltage V1 and the initial charging current I1 in step S201, and the self capacity of the charging port and the residual capacity of the charging stack, the switching strategy to be adopted by the DC-DC module when charging the battery of the electric vehicle can be determined.

[0094] In this embodiment, if the highest voltage V0 output by the DC-DC module is less than the current required charging voltage V1, and at the same time, the current required charging voltage V1 is also less than the voltage V2 required for the battery to be fully charged, that is, V0 < V1 < V2, the first switching strategy in Table 1 is selected as the module switching strategy when charging the battery of the electric vehicle.

[0095] In this embodiment, if the maximum voltage V0 output by the DC-DC module is greater than the current required charging voltage V1, and the maximum voltage V0 output by the DC-DC module is less than the voltage V2 required for the battery to be fully charged, i.e., V1 < V0 < V2, and if the maximum current I0 output by the DC-DC module is greater than the current required charging current I1, i.e., I1 < I0, the third switching strategy in Table 1 below is selected as the module switching strategy when the battery of the electric vehicle is being charged.

[0096] In this embodiment, if the maximum voltage V0 output by the DC-DC module is greater than the current required charging voltage V1, and the maximum voltage V0 output by the DC-DC module is less than the voltage V2 required for the battery to be fully charged, i.e., V1 < V0 < V2, and if the maximum current I0 output by the DC-DC module is less than the current required charging current I1, i.e., I1 > I0, the third switching strategy in Table 1 below is selected as the module switching strategy when the battery of the electric vehicle is being charged.

[0097] In this embodiment, if the maximum voltage V0 output by the DC-DC module is greater than the current required charging voltage V1, and the maximum voltage V0 output by the DC-DC module is greater than the voltage V2 required for the battery to be fully charged, i.e., V0 > V1 > V2, the fourth switching strategy in Table 1 below is selected as the fourth switching strategy when the battery of the electric vehicle is being charged.

[0098] Table 1 Switching strategy table

[0099]

[0100] After the switching strategy is determined according to the remaining capacity of the first charging port where the target charging gun is located, the voltage and current required for battery charging, and the charging requirements of the battery of the vehicle, step S203 is entered, and the idle DC-DC module is selected and booked according to the determined switching strategy.

[0101] In the technical solution provided in the above step S203 of the present application, first, any DC-DC module in the charging port that is not in a working state and has not been booked is defined as an idle module. The selection and booking principles of the idle module for a certain strategy are as follows:

[0102] Principle one, the charging requirements from a certain charging port preferentially use the modules of the charging port;

[0103] Principle two, if it is necessary to call DC-DC modules from other charging ports, the priority of calling idle modules is determined according to the distance between the charging ports;

[0104] Principle three, in the case of the charging pile has sufficient capacity, call the idle module of other charging port, thus to ensure that the remaining capacity of the charging port can carry out the basic charging function. For example, reserve 1 idle DC-DC module in each charging port, here only for example, not specific limited.

[0105] After selecting and reserving the idle DC-DC module according to the determined switching strategy, enter step S204, control the DC-DC module to charge the vehicle according to the determined switching strategy and charging strategy, until the power state reaches the full power state.

[0106] In the technical scheme provided by the above step S204 of the application, the charging strategy can include constant voltage charging strategy and constant current charging strategy, the voltage of the target conversion module under the constant voltage charging strategy can be determined based on the voltage required when the battery of the vehicle is charged at constant voltage and the number of series of the target conversion module, and the current of the target conversion module under the constant current charging strategy can be determined based on the current required when the battery of the vehicle is charged at constant current and the number of parallel of the target conversion module.

[0107] In this embodiment, if the charging strategy is constant current charging strategy, when the charging voltage of the battery is less than V x , the output current single loop closed loop control is adopted for each working DC-DC module to realize the stable output of the large current of the battery of the electric vehicle in constant current charging. The control structure of the DC-DC module can be as shown in Fig. 3(e), which is a schematic diagram of the control structure of a DC-DC module according to an embodiment of the application. The current error output by the DC-DC module is sent to the pulse width modulation (PWM) generator through the proportional integral controller (also called PI controller) for modulation. The reference voltage output by the DC-DC module can be obtained by the following formula (3):

[0108]

[0109] Wherein, I c may be used to represent the current required when the battery is charged at constant current.

[0110] In this embodiment, if the charging strategy is constant voltage charging strategy, when the charging voltage of the battery is greater than V xAt this time, the DC-DC module in each working adopts the voltage and current single loop closed loop control, realizes the stable output of the high voltage of the constant voltage charging of the electric vehicle battery. The control structure of the DC-DC module can be as shown in Figure 3(f), Figure 3(f) is a schematic diagram of another control structure of a DC-DC module according to an embodiment of the present application, the voltage error of the DC-DC module output is sent to the PWM generator for modulation through the proportional integral controller. The reference voltage of the DC-DC module output can be obtained by the following formula (4):

[0111]

[0112] Wherein, V c Can be used to represent the voltage required when the battery is constant voltage charging.

[0113] In this embodiment, the topology structure of the flexible charging station can be used to realize the charging method based on the flexible charging stack. For example, Figure 2(b) is a schematic diagram of a topology structure of a flexible charging station according to an embodiment of the present application, as shown in Figure 2(b), in the topology structure, it can include a 380V alternating current power supply, a plurality of charging ports and a matrix switch network. Wherein, the charging port can be composed of an AC-DC module and three DC-DC modules, the matrix switch network connects all the DC-DC modules of the topology to control the series and parallel connection between the DC-DC modules, the number of AC-DC modules and the number of DC-DC modules here are only for example, not specifically limited.

[0114] In this embodiment, through the charging method based on the switching strategy, the determined target conversion module can be controlled to charge the battery of the vehicle until the state of charge of the battery reaches the full state. For example, Figure 3(a) is a flow chart of a charging method based on a switching strategy according to an embodiment of the present application, as shown in Figure 3(a), the method can include the following steps:

[0115] Step S301, calculating the series number N2 of the DC-DC module required for the battery of the electric vehicle to reach the full state.

[0116] In the technical scheme provided by the above step S301 of the present application, if the switching strategy is the first switching strategy, the target number of the target conversion module corresponding to the first switching strategy is the series number of the DC-DC module, wherein the series number of the DC-DC module can be represented by the above formula (1).

[0117] After calculating the series number of the DC-DC module required for the battery of the electric vehicle to reach the full state, step S302 is entered, in the switching matrix network, using the series N2 DC-DC modules to charge the battery of the vehicle until the state of charge of the battery reaches the full state.

[0118] In this embodiment, by the charging method based on the switching strategy, the determined target conversion module can be controlled to charge the battery of the vehicle until the state of charge of the battery reaches the full state. For example, FIG. 3(b) is a flowchart of another charging method based on the switching strategy according to an embodiment of the present application. As shown in FIG. 3(b), the method can include the following steps:

[0119] In step S311, the number N2 of series of DC-DC modules required for the battery of the electric vehicle to reach the full state is calculated.

[0120] In the technical solution provided in step S311 of the present application, if the switching strategy is the second switching strategy, the target number of target conversion modules corresponding to the second switching strategy is the number of series of DC-DC modules, wherein the number of series of DC-DC modules can be represented by the above formula (1).

[0121] After calculating the number N2 of series of DC-DC modules required for the battery of the electric vehicle to reach the full state, step S312 is entered, and before the voltage of the battery of the vehicle reaches V0, the battery of the vehicle is charged by using a single DC-DC module in the switching matrix network.

[0122] After charging the battery of the vehicle by using a single DC-DC module in the switching matrix network, step S313 is entered, and in the switching matrix network, the remaining N2-1 DC-DC modules are connected in series with the single DC-DC module, and the battery of the vehicle is charged by using the N2 DC-DC modules connected in series until the state of charge of the battery reaches the full state.

[0123] In this embodiment, by the charging method based on the switching strategy, the determined target conversion module can be controlled to charge the battery of the vehicle until the state of charge of the battery reaches the full state. For example, FIG. 3(c) is a flowchart of another charging method based on the switching strategy according to an embodiment of the present application. As shown in FIG. 3(c), the method can include the following steps:

[0124] In step S321, the number of series of DC-DC modules required for the battery of the electric vehicle to reach the full state and the number of parallel of DC-DC modules required for high-current charging are calculated.

[0125] In the technical solution provided in the step S321 of the present application, if the switching strategy is the third switching strategy, the target number of target conversion modules corresponding to the third switching strategy is determined as the series number of DC-DC modules required for the battery of the vehicle to reach the full charge state and the parallel number of DC-DC modules required for large current charging, wherein the series number of DC-DC modules can be represented by the above formula (1), and the parallel number of DC-DC modules can be represented by the above formula (2).

[0126] After calculating the series number of DC-DC modules required for the battery of the electric vehicle to reach the full charge state and the parallel number of DC-DC modules required for large current charging, the step S322 is entered, and in the switching matrix network, the battery of the electric vehicle is charged with large current by using the parallel DC-DC modules.

[0127] After the battery of the electric vehicle is charged with large current by using the parallel DC-DC modules in the switching matrix network, the step S323 is entered, and after the voltage of the battery of the vehicle reaches V0, the battery of the electric vehicle is charged by using the series DC-DC modules in the switching matrix network until the state of charge of the battery reaches the full charge state.

[0128] In this embodiment, if N1

[0129] If N1>N2, before the voltage of the battery of the vehicle reaches V0, the battery of the vehicle is charged with large current by using the parallel N1 DC-DC modules in the switching matrix network. After the voltage of the battery of the vehicle reaches V0, the N2 DC-DC modules are connected in series in the switching matrix network, and the battery of the vehicle is charged by using the series N2 DC-DC modules until the state of charge of the battery reaches the full charge state, while the N1-N2 redundant DC-DC modules are released as idle modules.

[0130] If N1=N2, before the voltage of the battery of the vehicle reaches V0, all the DC-DC modules are connected in parallel in the switching matrix network, and all the DC-DC modules connected in parallel are used to charge the battery of the vehicle with a large current. After the voltage of the battery of the vehicle reaches V0, all the DC-DC modules are connected in series in the switching matrix network, and all the DC-DC modules connected in series are used to charge the battery of the vehicle until the state of charge of the battery reaches a full state.

[0131] In this embodiment, by the charging method based on the switching strategy, the determined target conversion module can be controlled to charge the battery of the vehicle until the state of charge of the battery reaches a full state. For example, FIG. 3(d) is a flowchart of another charging method based on a switching strategy according to an embodiment of the present application. As shown in FIG. 3(d), the method can include the following steps:

[0132] In step S331, the parallel number N1 of DC-DC modules required for large-current charging is calculated.

[0133] In the technical solution provided by the above step S331 of the present application, if the switching strategy is the fourth switching strategy, the target number of the target conversion module corresponding to the fourth switching strategy is the parallel number of DC-DC modules, wherein the parallel number of DC-DC modules can be represented by the above formula (2).

[0134] After calculating the parallel number N1 of DC-DC modules required for large-current charging, step S332 is entered, and N1 DC-DC modules connected in parallel are used to charge the vehicle in the switching matrix network until the state of charge of the vehicle reaches a full state.

[0135] In this embodiment, by the parallel connection mode of each DC-DC module in the charging port, the battery of the electric vehicle can be charged with a large constant current. For example, FIG. 4(a) is a schematic diagram of a charging port according to an embodiment of the present application. As shown in FIG. 4(a), the charging port can at least include a capacitor, a resistor, an AC-DC module, a DC-DC module, a parallel switch, and a series switch. Among them, the parallel switch is in an on state, and the series switch is in an off state.

[0136] In this embodiment, by the series connection mode of each DC-DC module in the charging port, the battery of the electric vehicle can be charged with a high constant voltage. For example, FIG. 4(b) is a schematic diagram of another charging port according to an embodiment of the present application. As shown in FIG. 4(b), the charging port can at least include a capacitor, a resistor, an AC-DC module, a DC-DC module, a parallel switch, and a series switch. Among them, the parallel switch is in an off state, and the series switch is in an on state.

[0137] In this embodiment, when the charging pile is controlled, in response to a target charging gun of at least one charging gun of the charging pile having accessed the vehicle, an initial output voltage required by the charging pile at the current time and a target output voltage required by the charging pile to end charging the vehicle can be determined. According to the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage and the target output voltage, a switching strategy to be executed by a plurality of first conversion modules in the first charging port can be determined. According to the remaining capacity of the first charging port and the determined switching strategy, at least one target conversion module can be determined from the first conversion module and the second conversion module, and the determined target conversion module is controlled to charge the vehicle until it is detected that the state of charge of the vehicle reaches the full charge state, thereby achieving the purpose that the charging pile can control the constant current charging of the electric vehicle with large current and the constant voltage charging of the electric vehicle with high voltage, thereby solving the technical problem that the working efficiency of the charging module of the charging pile is low, and further realizing the technical effect that the working efficiency of the charging module of the electric charging pile can be improved.

[0138] According to the embodiment of the present application, a control device of a charging pile is also provided. It should be noted that the control device of the charging pile can be used to execute the control method of the charging pile in the embodiment.

[0139] Figure 5 is a schematic diagram of a control device of a charging pile according to an embodiment of the present application. As shown in Figure 5 the control device 500 of the charging pile can include a first determination unit 501, a second determination unit 502, a third determination unit 503 and a charging unit 504.

[0140] The first determination unit 501 is configured to determine, in response to a target charging gun of at least one charging gun of the charging pile having accessed the vehicle, an initial output voltage required by the charging pile at the current time and a target output voltage required by the charging pile to end charging the vehicle, wherein the target charging gun is any charging gun of the at least one charging gun.

[0141] The second determination unit 502 is configured to determine, based on the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage and the target output voltage, a switching strategy to be executed by a plurality of first conversion modules in the first charging port, wherein the switching strategy is at least used to represent a connection rule between the plurality of first conversion modules and / or a connection rule between the plurality of first conversion modules and a plurality of second conversion modules in a second charging port, the position of the second charging port in the charging pile being different from the position of the first charging port in the charging pile.

[0142] The third determination unit 503 is configured to determine, based on the remaining capacity and the switching strategy, at least one target conversion module from the first conversion module and the second conversion module.

[0143] The charging unit 504 is configured to control the target conversion module to charge the vehicle until the state of charge of the vehicle reaches the full state.

[0144] Optionally, the second determining unit 502 can include a first determining module configured to determine the power supply voltage to be output by the plurality of first conversion modules to the vehicle; and a second determining module configured to determine the switching strategy based on the residual capacity, the power supply voltage, the initial output voltage and the target output voltage.

[0145] Optionally, the second determining module can include a comparison sub-module configured to, in response to the residual capacity satisfying the required amount of electricity of the vehicle, compare the power supply voltage, the initial output voltage and the target output voltage to obtain a comparison result, wherein the required amount of electricity is used to represent the amount of electricity that the vehicle is short of from the state of charge at the current time to the full state, and the comparison result is used to represent the relationship among the power supply voltage, the initial output voltage and the target output voltage; and a first determining sub-module configured to determine the switching strategy based on the comparison result.

[0146] Optionally, the first determining sub-module can determine the switching strategy based on the comparison result by performing the following steps: in response to the comparison result being that the supply voltage is less than the initial output voltage and the initial output voltage is less than the target output voltage, determining the switching strategy as a first switching strategy, wherein the first switching strategy is used to represent a rule that the connection rule between the plurality of first conversion modules is a series rule and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is a series rule; in response to the comparison result being that the supply voltage is greater than the initial output voltage, the supply voltage is less than the target output voltage, and the initial output current required by the charging pile at the current time is less than the supply current to be output by the plurality of first conversion modules to the vehicle, determining the switching strategy as a second switching strategy, wherein the second switching strategy is used to represent a rule that the vehicle is charged by any one of the plurality of first conversion modules before the voltage of the vehicle reaches the supply voltage, and after the voltage of the vehicle reaches the supply voltage, the connection rule between the plurality of first conversion modules is determined as a series rule and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is determined as a series rule; in response to the comparison result being that the supply voltage is greater than the initial output voltage, the supply voltage is less than the target output voltage, and the initial output current required by the charging pile at the current time is greater than the supply current to be output by the plurality of first conversion modules to the vehicle, determining the switching strategy as a third switching strategy, wherein the third switching strategy is used to represent a rule that the connection rule between the plurality of first conversion modules is determined as a parallel rule and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is determined as a parallel rule before the voltage of the vehicle reaches the supply voltage, and after the voltage of the vehicle reaches the supply voltage, the connection rule between the plurality of first conversion modules is determined as a series rule and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is determined as a series rule; in response to the comparison result being that the supply voltage is greater than the target output voltage and the initial output voltage is less than the target output voltage, determining the switching strategy as a fourth switching strategy, wherein the fourth switching strategy is used to represent a rule that the vehicle is charged by any one of the plurality of first conversion modules or the connection rule between the plurality of first conversion modules is determined as a parallel rule and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is determined as a parallel rule.

[0147] Optionally, the third determining unit 503 can include a third determining module configured to determine at least one target conversion module from the first conversion module and the second conversion module based on the switching strategy in response to the remaining capacity satisfying the required amount of electricity of the vehicle, wherein the required amount of electricity is used to represent the amount of electricity that the vehicle needs to reach a full-charge state from an electricity state at the current time.

[0148] Optionally, the third determining module can include: a second determining submodule, configured to determine a target number of target conversion modules corresponding to the switching strategy, wherein the target conversion modules include: first target conversion modules and second target conversion modules; and a third determining submodule, configured to determine, from the first conversion modules, the first target conversion modules that meet the target number, and determine, from the second conversion modules, the second target conversion modules that meet the target number, wherein the target number is the sum of the number of the first target conversion modules and the number of the second target conversion modules.

[0149] In this embodiment, the first determining unit is configured to determine an initial output voltage required by the charging pile at a current time and a target output voltage required by the charging pile to end charging of the vehicle in response to a target charging gun of at least one charging gun of the charging pile having accessed the vehicle, wherein the target charging gun is any charging gun of the at least one charging gun; the second determining unit is configured to determine a switching strategy to be executed by a plurality of first conversion modules in a first charging port based on a remaining capacity of the first charging port where the target charging gun is located, the initial output voltage, and the target output voltage, wherein the switching strategy is at least used to indicate a connection rule between the plurality of first conversion modules and / or a connection rule between the plurality of first conversion modules and a plurality of second conversion modules in a second charging port, the second charging port being located at a position of the charging pile different from a position of the first charging port of the charging pile; the third determining unit is configured to determine at least one target conversion module from the first conversion modules and the second conversion modules based on the remaining capacity and the switching strategy; and the charging unit is configured to control the target conversion modules to charge the vehicle until detecting that a power state of the vehicle reaches a full power state, thereby achieving the purpose of being able to control the charging pile to perform constant-current charging on the electric vehicle at a large current and to perform constant-voltage charging on the electric vehicle at a high voltage, thereby solving the technical problem of low working efficiency of the charging modules of the charging pile, and further achieving the technical effect of being able to improve the working efficiency of the charging modules of the charging pile.

[0150] According to the embodiments of the present application, a processor is further provided, which is used to run a program, wherein the program is executed to implement the control method of the charging pile when the program is run by the processor.

[0151] According to the embodiments of the present application, an electronic device is further provided, which includes a memory storing an executable program, and a processor configured to run the program, wherein the program is executed to implement the control of the charging pile when the program is run.

[0152] According to another aspect of the embodiments of the present application, a computer readable storage medium is further provided. The computer readable storage medium includes a stored program, wherein the program is executed to control a device where the computer readable storage medium is located to implement the control of the charging pile when the program is run.

[0153] According to the embodiment of the present application, a computer program product is also provided, which comprises a computer program, wherein the computer program is executed by a processor to realize the control of the charging pile in the embodiment.

[0154] According to the embodiment of the present application, a computer program product is also provided, which comprises a nonvolatile computer readable storage medium for storing a computer program, wherein the computer program is executed by a processor to realize the control of the charging pile in the embodiment.

[0155] According to the embodiment of the present application, a computer program is also provided, wherein the computer program is executed by a processor to realize the control of the charging pile in the embodiment.

[0156] The above-mentioned serial numbers of the embodiments of the present application are only for description, and do not represent the advantages or disadvantages of the embodiments.

[0157] In the above-mentioned embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0158] In several embodiments provided in the present application, it should be understood that the disclosed technical contents can be implemented by other ways. Among them, the above-mentioned device embodiments are only schematic, for example, the division of units can be a logical function division, and actual implementation can have another division way, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed units can be indirect coupling or communication connection through some interfaces, units or modules, which can be electrical or other forms.

[0159] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed to multiple units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0160] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be realized in the form of hardware or in the form of software functional unit.

[0161] If the integrated unit is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application or the part that contributes to the related art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the embodiments of the present application. The aforementioned storage medium includes a U disk, a read-only memory (ROM, referred to as Read-Only Memory), a random access memory (RAM, referred to as Random Access Memory), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0162] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A control method for a charging pile, characterized in that, include: In response to a target charging gun in at least one of the charging guns of the charging pile being connected to a vehicle, the initial output voltage required by the charging pile at the current moment and the target output voltage required by the charging pile to finish charging the vehicle are determined, wherein the target charging gun is any of the at least one charging gun. Based on the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage, and the target output voltage, a switching strategy to be executed by multiple first conversion modules in the first charging port is determined. The switching strategy is used to represent at least the connection rules between multiple first conversion modules and / or the connection rules between multiple first conversion modules and multiple second conversion modules in the second charging port. The position of the second charging port in the charging pile is different from the position of the first charging port in the charging pile. Based on the remaining capacity and the switching strategy, at least one target switching module is determined from the first switching module and the second switching module; The target conversion module is controlled to charge the vehicle until the vehicle's battery level is detected to be fully charged. Specifically, based on the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage, and the target output voltage, a switching strategy to be executed by multiple first conversion modules in the first charging port is determined, including: determining the power supply voltage to be output to the vehicle by multiple first conversion modules; and determining the switching strategy based on the remaining capacity, the power supply voltage, the initial output voltage, and the target output voltage.

2. The method according to claim 1, characterized in that, Based on the remaining capacity, the supply voltage, the initial output voltage, and the target output voltage, the switching strategy is determined, including: In response to the remaining capacity meeting the vehicle's required power, the supply voltage, the initial output voltage, and the target output voltage are compared to obtain a comparison result. The required power represents the amount of power the vehicle needs to reach the fully charged state from its current power state. The comparison result represents the relationship between the supply voltage, the initial output voltage, and the target output voltage. Based on the comparison results, the switching strategy is determined.

3. The method according to claim 2, characterized in that, Based on the comparison results, the switching strategy is determined, including: In response to the comparison result that the supply voltage is less than the initial output voltage and the initial output voltage is less than the target output voltage, the switching strategy is determined to be a first switching strategy, wherein the first switching strategy is used to indicate that the connection rule between multiple first conversion modules is a series rule, and / or the connection rule between multiple first conversion modules and multiple second conversion modules is the series rule; In response to the comparison result that the supply voltage is greater than the initial output voltage, the supply voltage is less than the target output voltage, and the initial output current required by the charging pile at the current moment is less than the supply current to be output to the vehicle by the plurality of first conversion modules, the switching strategy is determined to be a second switching strategy. The second switching strategy is used to indicate that before the voltage of the vehicle reaches the supply voltage, the vehicle is charged using any one of the plurality of first conversion modules. After the voltage of the vehicle reaches the supply voltage, the connection rule between the plurality of first conversion modules is determined to be the series rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is the series rule. In response to the comparison result that the supply voltage is greater than the initial output voltage, the supply voltage is less than the target output voltage, and the initial output current required by the charging pile at the current moment is greater than the supply current to be output by the plurality of first conversion modules to the vehicle, the switching strategy is determined to be a third switching strategy. The third switching strategy is used to indicate that before the voltage of the vehicle reaches the supply voltage, the connection rule between the plurality of first conversion modules is determined to be a parallel rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is the parallel rule; after the voltage of the vehicle reaches the supply voltage, the connection rule between the plurality of first conversion modules is determined to be the series rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is the series rule. In response to the comparison result that the supply voltage is greater than the target output voltage and the initial output voltage is less than the target output voltage, the switching strategy is determined to be a fourth switching strategy, wherein the fourth switching strategy is used to indicate that the vehicle is charged using any one of the plurality of first conversion modules, or to determine that the connection rule between the plurality of first conversion modules is the parallel rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules is the parallel rule.

4. The method according to claim 1, characterized in that, Based on the remaining capacity and the switching strategy, at least one target switching module is determined from the first switching module and the second switching module, including: In response to the remaining capacity meeting the vehicle's required power, based on the switching strategy, at least one of the target switching modules is determined from the first switching module and the second switching module, wherein the required power represents the power difference between the vehicle's current power state and its fully charged state.

5. The method according to claim 4, characterized in that, Based on the switching strategy, at least one target conversion module is determined from the first conversion module and the second conversion module, including: Determine the target number of the target conversion modules corresponding to the switching strategy, wherein the target conversion modules include: a first target conversion module and a second target conversion module; From the first conversion module, a first target conversion module that meets the target quantity is determined, and from the second conversion module, a second target conversion module that meets the target quantity is determined, wherein the target quantity is the sum of the number of the first target conversion modules and the number of the second target conversion modules.

6. A control device for a charging pile, characterized in that, The control method applied to the charging stack according to any one of claims 1 to 5 includes: The first determining unit is configured to, in response to the fact that a target charging gun in at least one charging gun of the charging pile has been connected to the vehicle, determine the initial output voltage required by the charging pile at the current moment, and the target output voltage required by the charging pile to finish charging the vehicle, wherein the target charging gun is any one of the at least one charging guns. The second determining unit is used to determine a switching strategy to be executed by a plurality of first conversion modules in the first charging port based on the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage and the target output voltage. The switching strategy is used to represent at least the connection rules between the plurality of first conversion modules and / or the connection rules between the plurality of first conversion modules and the plurality of second conversion modules in the second charging port. The position of the second charging port in the charging pile is different from the position of the first charging port in the charging pile. The third determining unit is used to determine at least one target conversion module from the first conversion module and the second conversion module based on the remaining capacity and the switching strategy. The charging unit is used to control the target conversion module to charge the vehicle until the vehicle's battery level is detected to be fully charged. The second determining unit is configured to determine, by performing the following steps, a switching strategy to be executed by a plurality of first conversion modules in the first charging port based on the remaining capacity of the first charging port where the target charging gun is located, the initial output voltage, and the target output voltage: determining the power supply voltage to be output by the plurality of first conversion modules to the vehicle; and determining the switching strategy based on the remaining capacity, the power supply voltage, the initial output voltage, and the target output voltage.

7. A processor, characterized in that, The processor is used to run a program, wherein the program, when run by the processor, executes the control method of the charging pile according to any one of claims 1 to 5.

8. An electronic device, characterized in that, include: Memory, which stores executable programs; A processor for running the program, wherein the program, when running, executes the control method of the charging stack according to any one of claims 1 to 5.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored executable program, wherein, when the executable program is executed, it controls the device on which the storage medium is located to perform the control method of the charging pile according to any one of claims 1 to 5.

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