Charging pile control method and device, processor and electronic equipment

Abstract

The invention discloses a charging pile control method and device, a processor and electronic equipment. The method comprises the steps that in response to the fact that a target charging gun in at least one charging gun of a charging pile is connected into a vehicle, the initial output voltage needed by the charging pile at the current moment and the target output voltage needed when the charging pile stops charging the vehicle are determined, and the target charging gun is any charging gun in the at least one charging gun; based on the residual capacity, the initial output voltage and the target output voltage of the first charging port where the target charging gun is located, determining a switching strategy to be executed by a plurality of first conversion modules in the first charging port; determining at least one target conversion module from the first conversion module and the second conversion module based on the residual capacity and a switching strategy; and the target conversion module is controlled to charge the vehicle until it is detected that the electric quantity state of the vehicle reaches a full charge state. The technical problem that the working efficiency of the charging module of the charging pile is low is solved.

Description

Technical Field

[0001] The present invention relates to the field of electric power, and in particular to a control method, device, processor and electronic equipment for a charging stack. Background Art

[0002] At present, in the control process of the charging stack, the existing technology often uses the method of parallel switching of power modules to accommodate the charging needs of different electric vehicles.

[0003] However, the above-mentioned parallel switching method completely relies on the voltage regulation capability of the current converter itself, thereby resulting in a technical problem of low working efficiency of the charging module of the charging stack.

[0004] With respect to the technical problem of low working efficiency of the charging module of the above-mentioned charging stack, no effective solution has been proposed so far. Summary of the invention

[0005] Embodiments of the present invention provide a control method, device, processor and electronic device for a charging stack, so as to at least solve the technical problem of low working efficiency of a charging module of the charging stack.

[0006] According to one aspect of an embodiment of the present invention, a control method for a charging stack is provided, the method comprising: in response to a target charging gun among at least one charging gun of the charging stack being connected to a vehicle, determining an initial output voltage required by the charging stack at a current moment, and a target output voltage required for the charging stack to finish charging the vehicle, wherein the target charging gun is any charging gun among the at least one charging gun; based on the remaining capacity, the initial output voltage and the target output voltage of a first charging port where the target charging gun is located, 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 position of the second charging port in the charging stack being different from the position of the first charging port in the charging stack; based on the remaining capacity and the switching strategy, determining at least one target conversion module from the first conversion module and the second conversion module; controlling the target conversion module to charge the vehicle until it is detected that the power state of the vehicle reaches a full charge state.

[0007] Optionally, based on the remaining capacity, initial output voltage and target output voltage of the first charging port where the target charging gun is located, the 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; determining the switching strategy based on the remaining capacity, power supply voltage, initial output voltage and target output voltage.

[0008] Optionally, based on the remaining capacity, the power supply voltage, the initial output voltage and the target output voltage, a switching strategy is determined, including: in response to the remaining capacity satisfying the required power of the vehicle, the power supply voltage, the initial output voltage and the target output voltage are compared to obtain a comparison result, wherein the required power is used to represent the difference in power required for the vehicle to reach a fully charged state from the power state at the current moment, and the comparison result is used to represent the relationship between the power supply voltage, the initial output voltage and the target output voltage; based on the comparison result, a switching strategy is determined.

[0009] Optionally, based on the comparison result, determining a switching strategy includes: in response to the comparison result that the power 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 to be a first switching strategy, wherein the first switching strategy is used to indicate that the connection rule between the multiple first conversion modules is a series rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is a series rule; in response to the comparison result that the power supply voltage is greater than the initial output voltage, the power supply voltage is less than the target output voltage, and the initial output current required by the charging stack at the current moment is less than the power supply current to be output to the vehicle by the multiple first conversion modules, determining the switching strategy to be a second switching strategy, wherein the second switching strategy is used to indicate that before the voltage of the vehicle reaches the power supply voltage, any first conversion module among the multiple first conversion modules is used to charge the vehicle, and after the voltage of the vehicle reaches the power supply voltage, determining that the connection rule between the multiple first conversion modules is a series rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is a series rule; in response to the comparison result that the power supply voltage is greater than the initial output voltage, the power supply voltage is less than the target output voltage, and the initial output current required by the charging stack at the current moment is less than the power supply current to be output to the vehicle by the multiple first conversion modules voltage, the supply voltage is less than the target output voltage, and the initial output current required by the charging stack at the current moment is greater than the supply current to be output by the multiple first conversion modules to the vehicle, the switching strategy is determined to be the third switching strategy, wherein the third switching strategy is used to indicate that before the voltage of the vehicle reaches the supply voltage, the connection rule between the multiple first conversion modules is determined to be the parallel rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is the parallel rule, and after the voltage of the vehicle reaches the supply voltage, the connection rule between the multiple first conversion modules is determined to be the series rule, and / or the connection rule between the multiple first conversion modules and the multiple 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 the fourth switching strategy, wherein the fourth switching strategy is used to indicate that the vehicle is charged using any first conversion module of the multiple first conversion modules, or the connection rule between the multiple first conversion modules is determined to be the parallel rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is the parallel rule.

[0010] Optionally, based on the remaining capacity and the switching strategy, at least one target conversion module is determined from the first conversion module and the second conversion module, including: in response to the remaining capacity satisfying the required power of the vehicle, based on the switching strategy, at least one target conversion module is determined from the first conversion module and the second conversion module, wherein the required power is used to represent the difference in power required for the vehicle to reach a fully charged state from the power state at the current moment.

[0011] Optionally, based on the switching strategy, at least one target conversion module is determined from the first conversion module and the second conversion module, including: determining a target number of target conversion modules corresponding to the switching strategy, wherein the target conversion module includes: a first target conversion module and a second target conversion module; determining a first target conversion module that meets the target number from the first conversion module, and determining a second target conversion module that meets the target number from the second conversion module, 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.

[0012] According to one aspect of an embodiment of the present invention, a control device for a charging stack is provided, and the device may include: a first determining unit, for determining an initial output voltage required by the charging stack at a current moment and a target output voltage required for the charging stack to end charging the vehicle in response to a target charging gun in at least one charging gun of the charging stack being connected to a vehicle, wherein the target charging gun is any charging gun in the at least one charging gun; a second determining unit, for determining a switching strategy to be executed by a plurality of first conversion modules in the first charging port based on the remaining capacity, the initial output voltage and the target output voltage of the first charging port where the target charging gun is located, 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, and the position of the second charging port in the charging stack is different from the position of the first charging port in the charging stack; a third determining unit, for 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; and a charging unit, for controlling the target conversion module to charge the vehicle until it is detected that the power state of the vehicle reaches a full charge state.

[0013] According to another aspect of an embodiment of the present invention, a processor is provided, wherein the processor is used to run a program, wherein when the program is run by the processor, the control method of the charging stack in the embodiment of the present invention is executed.

[0014] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein when the program is running, the control method of the charging stack in each embodiment of the present invention is executed.

[0015] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the control method of the charging stack in the embodiment of the present invention.

[0016] According to another aspect of an embodiment of the present invention, a computer program product is further provided. The computer program product includes a computer program. When the computer program is executed by a processor, the control method of the charging stack in the embodiment of the present invention is implemented.

[0017] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the control method of the charging stack in the embodiment of the present invention is implemented.

[0018] According to another aspect of an embodiment of the present invention, an embodiment of the present application further provides a computer program, and when the computer program is executed by a processor, the control method of the charging stack in the above-mentioned embodiment of the present invention is implemented.

[0019] In an embodiment of the present invention, when controlling the charging stack, in response to the target charging gun in at least one charging gun of the charging stack being connected to the vehicle, the initial output voltage required by the charging stack at the current moment and the target output voltage required by the charging stack to end charging the vehicle can be determined. According to the remaining capacity, initial output voltage and target output voltage of the first charging port where the target charging gun is located, the switching strategy to be executed by multiple 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 can be controlled to charge the vehicle until the vehicle's power state is detected to be fully charged, thereby achieving the purpose of controlling the charging stack to charge the electric vehicle with a large current constant current and charging the electric vehicle with a high voltage constant voltage, thereby solving the technical problem of low working efficiency of the charging module of the charging stack, and further achieving the technical effect of improving the working efficiency of the charging module of the electric charging stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 is a flow chart of a control method of a charging stack according to an embodiment of the present invention;

[0022] FIG2( a ) is a flow chart of a charging method based on a flexible charging stack according to an embodiment of the present invention;

[0023] FIG2( b ) is a schematic diagram of a topological structure of a flexible charging station according to an embodiment of the present invention;

[0024] FIG3( a ) is a flow chart of a charging method based on a switching strategy according to an embodiment of the present invention;

[0025] FIG3( b ) is a flow chart of another charging method based on a switching strategy according to an embodiment of the present invention;

[0026] FIG3( c ) is a flow chart of another charging method based on a switching strategy according to an embodiment of the present invention;

[0027] FIG3( d ) is a flow chart of another charging method based on a switching strategy according to an embodiment of the present invention;

[0028] FIG3( e ) is a schematic diagram of a control structure of a DC-DC module according to an embodiment of the present invention;

[0029] FIG3( f) is a schematic diagram of a control structure of another DC-DC module according to an embodiment of the present invention;

[0030] FIG4( a ) is a schematic diagram of a charging port according to an embodiment of the present invention;

[0031] FIG4( b ) is a schematic diagram of another charging port according to an embodiment of the present invention;

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

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] According to an embodiment of the present invention, a control method for a charging stack is provided. It should be noted that the steps shown in the flowchart of the accompanying 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 flowchart, in some cases, the steps shown or described may be executed in an order different from that shown here.

[0036] Figure 1 is a flow chart of a control method of a charging stack according to an embodiment of the present invention, the method may include the following steps:

[0037] Step S101, in response to a target charging gun of at least one charging gun of the charging stack being connected to a vehicle, determining an initial output voltage required by the charging stack at a current moment and a target output voltage required by the charging stack to end charging the battery.

[0038] In the technical solution provided in the above step S101 of the present invention, the above target charging gun may be any charging gun among the at least one charging gun.

[0039] In this embodiment, in response to the target charging gun in at least one charging gun of the charging stack being connected to the vehicle, the initial output voltage required by the charging stack at the current moment and the target output voltage required by the charging stack to end charging the vehicle are determined. Optionally, in this embodiment, when the target charging gun in at least one charging gun of the charging stack is connected to the vehicle, the initial charging voltage required by the vehicle at the current moment and the target charging voltage required for the vehicle's power state to reach a 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 stack at the current moment, and the determined target charging voltage is determined as the target output voltage required by the charging stack to end charging the vehicle. Among them, the attribute information of the vehicle can be used to represent the characteristics characterized by various devices of the vehicle at the current moment. For example, various devices of the vehicle may include at least one of the following devices: battery, air conditioner, brake pads and generator, etc., which are only used as examples here and are not specifically limited.

[0040] Optionally, when the target charging gun of at least one charging gun of the charging stack has been connected to the battery of the vehicle, the initial charging voltage required for the vehicle at the current moment and the target charging voltage required for the vehicle's state of charge to reach a fully charged state can be determined from the vehicle's attribute information. For example, when the target charging gun of the charging stack has been connected to the vehicle, the attribute information of the vehicle can be screened to obtain the initial charging voltage required for the vehicle at the current moment and the target charging voltage required for the vehicle's state of charge to reach a fully charged state. This is only an example and is not specifically limited.

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

[0042] In the technical solution provided in the above step S102 of the present invention, the above switching strategy can be used to at least represent 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 above second charging port in the charging stack may be different from the position of the first charging port in the charging stack. For example, the above first conversion module and the above second conversion module may be direct current (DC for short)-direct current conversion modules, and the position of the above second charging port in the charging stack may be adjacent to the position of the first charging port in the charging stack. This is only an example and is not specifically limited.

[0043] In this embodiment, in response to the target charging gun in at least one charging gun of the charging stack being connected to the vehicle, after determining the initial output voltage required by the charging stack at the current moment and the target output voltage required by the charging stack to finish charging the vehicle, the switching strategies to be executed by the multiple first conversion modules in the first charging port are determined based on the remaining capacity, initial output voltage and target output voltage of the first charging port where the target charging gun is located. Optionally, this embodiment determines whether the remaining capacity of the first charging port meets the required power of the vehicle on the basis of determining the initial output voltage required by the charging stack at the current moment and the target output voltage required by the charging stack to finish charging the vehicle. If it is determined that the remaining capacity of the first charging port can meet the required power of the vehicle, the switching strategies to be executed by the multiple 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 difference in power required for the vehicle to reach the fully charged state from the power state at the current moment.

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

[0045] Step S103: 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.

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

[0047] In this embodiment, after determining the switching strategies to be executed by the multiple first conversion modules in the first charging port based on the remaining capacity, initial output voltage and target output voltage of the first charging port where the target charging gun is located, 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, this embodiment determines whether the remaining capacity of the first charging port meets the required power of the vehicle on the basis of determining the switching strategies to be executed by the multiple first conversion modules in the first charging port. If it is determined that the remaining capacity of the first charging port can meet the required power of the vehicle, then 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. This is only an example and is not specifically limited.

[0048] Step S104, controlling the target conversion module to charge the vehicle until it is detected that the battery level of the vehicle reaches a fully charged state.

[0049] In the technical solution provided in the above step S104 of the present invention, after 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, the target conversion module is controlled to charge the vehicle until it is detected that the battery state of the vehicle reaches a fully charged state. Optionally, on the basis of determining the target conversion module, this embodiment controls the target conversion module according to the charging strategy to charge the vehicle until it is detected that the battery state of the vehicle reaches a fully charged state. Among them, the charging strategy may include a constant voltage charging strategy and a constant current charging strategy, and 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 battery of the vehicle and the number of target conversion modules in series, and 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 battery of the vehicle and the number of target conversion modules in parallel.

[0050] In this embodiment, according to the charging strategy, the target conversion module is controlled to charge the vehicle until the state of charge reaches a full charge state. Optionally, 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 battery of the vehicle and the number of target conversion modules in series to charge the vehicle until the state of charge of the vehicle is detected to be fully charged. Alternatively, 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 battery of the vehicle and the number of target conversion modules in parallel to charge the battery until the state of charge of the battery is detected to be fully charged.

[0051] In the above steps S101 to S104 of the present application, when controlling the charging stack, in response to the target charging gun in at least one charging gun of the charging stack being connected to the vehicle, the initial output voltage required by the charging stack at the current moment and the target output voltage required by the charging stack to end charging the vehicle can be determined. According to the remaining capacity, initial output voltage and target output voltage of the first charging port where the target charging gun is located, the switching strategy to be executed by multiple 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 can be controlled to charge the vehicle until the vehicle's power state is detected to be fully charged, thereby achieving the purpose of controlling the charging stack to charge the electric vehicle with a large current constant current and charging the electric vehicle with a high voltage constant voltage, thereby solving the technical problem of low working efficiency of the charging module of the charging stack, and further achieving the technical effect of improving the working efficiency of the charging module of the electric charging stack.

[0052] The above method of this embodiment is further introduced below.

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

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

[0055] In this embodiment, in response to the target charging gun in at least one charging gun of the charging stack being connected to the vehicle, after determining the initial output voltage required by the charging stack at the current moment and the target output voltage required by the charging stack to finish charging the vehicle, the power supply voltages to be output to the vehicle by the multiple first conversion modules are determined. Optionally, this embodiment can determine the power supply voltages to be output to the vehicle by the multiple first conversion modules based on the determination of the initial output voltage required by the charging stack at the current moment and the target output voltage required by the charging stack to finish charging the battery. For example, the highest voltage to be output to the vehicle by the DC-DC module can be determined. This is only an example and is not specifically limited.

[0056] In this embodiment, after determining the power supply voltage to be output to the vehicle by the plurality of first conversion modules, the switching strategy is determined based on the remaining capacity, the power supply voltage, the initial output voltage and the target output voltage. Optionally, this embodiment determines whether the remaining capacity of the first charging port meets the required power of the vehicle on the basis of determining the power supply voltage. If it is determined 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 based on the power supply voltage to be output to the vehicle by the plurality of first conversion modules, the initial output voltage required by the charging stack at the current moment, and the target output voltage required for the charging stack to finish charging the battery.

[0057] As an optional implementation method, a switching strategy is determined based on the remaining capacity, the power supply voltage, the initial output voltage and the target output voltage, including: in response to the remaining 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; based on the comparison result, determining the switching strategy.

[0058] In this embodiment, the required power can be used to represent the power difference between the vehicle's current power state and the fully charged 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 that the power supply voltage is greater than the initial output voltage, and the power supply voltage is less than the target output voltage, or that the power supply voltage is greater than the target output voltage, and the initial output voltage is less than the target output voltage. This is only an example and is not specifically limited.

[0059] In this embodiment, after determining the power supply voltages to be output to the vehicle by the plurality of first conversion modules, in response to the remaining capacity satisfying the required power of the vehicle, the power supply voltage, the initial output voltage and the target output voltage are compared to obtain a comparison result. Optionally, this embodiment determines whether the remaining capacity of the first charging port satisfies the required power of the vehicle on the basis of determining the power supply voltage. If it is determined that the remaining capacity of the first charging port can satisfy the required power of the vehicle, the power supply voltage, the initial output voltage and the target output voltage are compared to obtain a comparison result, that is, the relationship between the power supply voltage, the initial output voltage and the target output voltage can be obtained.

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

[0061] It should be noted that the above switching strategies may 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 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 a series rule. The second switching strategy can be used to indicate that before the voltage of the vehicle reaches the power supply voltage, any first conversion module among the multiple first conversion modules is used to charge the vehicle. After the voltage of the vehicle reaches the power supply voltage, it is determined that the connection rule between the multiple first conversion modules is a series rule, and / or the connection rule between the multiple first conversion modules and multiple second conversion modules is a series rule. The third switching strategy can be used to indicate that before the voltage of the vehicle reaches the power supply voltage, it is determined that The connection rule between multiple first conversion modules is a parallel rule, and / or the connection rule between multiple first conversion modules and multiple second conversion modules is a parallel rule. After the voltage of the vehicle reaches the power supply voltage, the connection rule between the multiple first conversion modules is determined to be a series rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is a series rule. The fourth switching strategy can be used to indicate that the vehicle is charged using any first conversion module among the multiple first conversion modules, or, the connection rule between the multiple first conversion modules is determined to be a parallel rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is a parallel rule.

[0062] As an optional embodiment, a switching strategy is determined based on the comparison result, including: in response to the comparison result that the power supply voltage is less than the initial output voltage, and the initial output voltage is less than the target output voltage, determining that the switching strategy is the first switching strategy; in response to the comparison result that the power supply voltage is greater than the initial output voltage, the power supply voltage is less than the target output voltage, and the initial output current required by the charging stack at the current moment is less than the power supply current to be output to the vehicle by multiple first conversion modules, determining that the switching strategy is the second switching strategy; in response to the comparison result that the power supply voltage is greater than the initial output voltage, the power supply voltage is less than the target output voltage, and the initial output current required by the charging stack at the current moment is greater than the power supply current to be output to the vehicle by multiple first conversion modules, determining that the switching strategy is the third switching strategy; in response to the comparison result that the power supply voltage is greater than the target output voltage, and the initial output voltage is less than the target output voltage, determining that the switching strategy is 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 power supply current can be represented by I0. This is only used as an example and is not specifically limited.

[0064] In this embodiment, in response to the remaining capacity satisfying the required power of the vehicle, the power supply voltage, the initial output voltage and the target output voltage are compared, and after the comparison result is obtained, in response to the comparison result that the power 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 the first switching strategy. Optionally, this embodiment analyzes the obtained comparison result on the basis of the obtained comparison result, and if the analysis shows that the obtained comparison result is that the power 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 the first switching strategy. For example, if the analysis shows that the obtained comparison result is V0<V1<V2, the switching strategy is determined to be the first switching strategy, that is, the connection rule between the multiple first conversion modules is determined to be the series rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is determined to be the series rule.

[0065] In this embodiment, in response to the remaining capacity satisfying the required power of the vehicle, the power supply voltage, the initial output voltage and the target output voltage are compared, and after the comparison result is obtained, in response to the comparison result that the power supply voltage is greater than the initial output voltage, the power supply voltage is less than the target output voltage, and the initial output current required by the vehicle at the current moment is less than the power supply current to be output to the vehicle by the plurality of first conversion modules, the switching strategy is determined to be the second switching strategy. Optionally, this embodiment analyzes the obtained comparison result on the basis of the obtained comparison result, and if the analysis shows that the obtained comparison result is that the power supply voltage is greater than the initial output voltage, and the power supply voltage is less than the target output voltage, then the relationship between the initial charging current and the power supply current is judged, and if it is judged that the initial output current is less than the power supply current, then the switching strategy is determined to be the second switching strategy. For example, if the comparison result obtained through analysis is V1<V0<V2, the relationship between V1 and V0 is judged. If it is judged that I1<I0, the switching strategy is determined to be the second switching strategy, that is, before the voltage of the vehicle reaches the power supply voltage, the vehicle is charged using any first conversion module among the multiple first conversion modules. After the voltage of the vehicle reaches the power supply voltage, the connection rule between the multiple first conversion modules is determined to be the series rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is determined to be the series rule.

[0066] In this embodiment, in response to the remaining capacity satisfying the required power of the vehicle, the power supply voltage, the initial output voltage and the target output voltage are compared, and after the comparison result is obtained, in response to the comparison result that the power supply voltage is greater than the initial output voltage, the power supply voltage is less than the target output voltage, and the initial output current required by the charging stack at the current moment is greater than the power supply current to be output to the vehicle by the multiple first conversion modules, the switching strategy is determined to be the third switching strategy. Optionally, this embodiment analyzes the obtained comparison result on the basis of the obtained comparison result, and if the analysis shows that the obtained comparison result is that the power supply voltage is greater than the initial output voltage, and the power supply voltage is less than the target output voltage, then the relationship between the initial output current and the power supply current is judged, and if it is judged that the initial output current is greater than the power supply current, then the switching strategy is determined to be the third switching strategy. For example, if the comparison result obtained through analysis is V1<V0<V2, the relationship between V1 and V0 is judged. If it is judged that I1>I0, the switching strategy is determined to be the third switching strategy, that is, before the voltage of the vehicle reaches the power supply voltage, the connection rule between the multiple first conversion modules is determined to be the parallel rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is the parallel rule. After the voltage of the vehicle reaches the power supply voltage, the connection rule between the multiple first conversion modules is determined to be the series rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is the series rule.

[0067] In this embodiment, in response to the remaining capacity satisfying the required power of the vehicle, the power supply voltage, the initial output voltage and the target output voltage are compared, and after the comparison result is obtained, in response to the comparison result that the power 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 the fourth switching strategy. Optionally, this embodiment analyzes the obtained comparison result on the basis of the obtained comparison result, and if the analysis shows that the obtained comparison result is that the power 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 the fourth switching strategy. For example, if the analysis shows that the obtained comparison result is V0>V1>V2, the switching strategy is determined to be the fourth switching strategy, that is, any first conversion module among the multiple first conversion modules is used to charge the vehicle, or the connection rule between the multiple first conversion modules is determined to be a parallel rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is a rule of parallel rule.

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

[0069] In this embodiment, the required power may be used to indicate the amount of power required for the vehicle to reach a fully charged state from the current power state.

[0070] In this embodiment, after determining the switching strategies to be executed by the multiple first conversion modules in the first charging port based on the remaining capacity, initial output voltage and target output voltage of the first charging port where the target charging gun is located, in response to the remaining capacity satisfying the required power of the vehicle, at least one target conversion module is determined from the first conversion module and the second conversion module based on the switching strategy. Optionally, this embodiment determines whether the remaining capacity of the first charging port satisfies the required power of the vehicle on the basis of determining the switching strategies to be executed by the multiple first conversion modules in the first charging port. If it is determined 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, thereby determining at least one target conversion module from the first conversion module and the second conversion module.

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

[0072] In this embodiment, the target conversion module may include: a first target conversion module and a second target conversion module, wherein the first target conversion module may be any conversion module in the first conversion module, and the second target conversion module may be any conversion module in the second conversion module.

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

[0074] In this embodiment, after determining the switching strategies to be executed by the multiple first conversion modules in the first charging port based on the remaining capacity, initial charging voltage and target charging voltage of the first charging port where the target charging gun is located, the target number of target conversion modules corresponding to the switching strategies is determined. Optionally, based on determining the switching strategies to be executed by the multiple 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; 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 determined to be the number of DC-DC modules connected in series, wherein the number of DC-DC modules connected in series can be expressed by the following formula (1). In the switching matrix network, the vehicle is charged using N2 DC-DC modules connected in series until the vehicle's power state reaches a fully charged 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 to be the number of DC-DC modules connected in series, wherein the number of DC-DC modules connected in series can be expressed by the above formula (1). Before the voltage of the vehicle reaches V0, the vehicle is charged using a separate DC-DC module in the switching matrix network. After the voltage of the vehicle reaches V0, the remaining N2-1 DC-DC modules are connected in series with the separate DC-DC module in the switching matrix network, and the vehicle is charged using the N2 DC-DC modules connected in series until the vehicle's power state reaches a fully charged 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 DC-DC modules in series required for the vehicle to reach a fully charged state and the number of DC-DC modules in parallel required for high-current charging, wherein the number of DC-DC modules in series can be expressed by the above formula (1), and the number of DC-DC modules in parallel can be expressed by the following formula (2). If N1<N2, then N2-N1 DC-DC modules required to charge the vehicle to a fully charged state are reserved in advance. Before the voltage of the vehicle reaches V0, in the switching matrix network, the vehicle is charged with a high current using N1 DC-DC modules in parallel. After the voltage of the vehicle reaches V0, in the switching matrix network, the reserved N2-N1 DC-DC modules are connected in series with the current N1 DC-DC modules, and the vehicle is charged using the N2 DC-DC modules in series until the vehicle's power state reaches a fully charged state.

[0079]

[0080] If N1>N2, before the vehicle voltage reaches V0, the N1 DC-DC modules in parallel are used to charge the vehicle with a large current in the switching matrix network. After the vehicle voltage reaches V0, the N2 DC-DC modules are connected in series in the switching matrix network, and the vehicle is charged using the N2 DC-DC modules in series until the vehicle reaches a full charge state, and at the same time, the N1-N2 redundant DC-DC modules are released as idle modules.

[0081] If N1=N2, before the vehicle voltage reaches V0, all DC-DC modules are connected in parallel in the switching matrix network, and all parallel DC-DC modules are used to charge the vehicle with a large current. After the vehicle voltage reaches V0, all DC-DC modules are connected in series in the switching matrix network, and all series DC-DC modules are used to charge the vehicle until the vehicle reaches a fully charged 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 to be the parallel number of DC-DC modules, wherein the parallel number of DC-DC modules can be expressed by the above formula (2). In the switching matrix network, the vehicle is charged using N1 DC-DC modules in parallel until the vehicle's power state reaches a fully charged state.

[0083] In this embodiment, after determining the target number of target conversion modules corresponding to the switching strategy, a first target conversion module that meets the target number is determined from the first conversion module, and a second target conversion module that meets the target number is determined from the second conversion module. Optionally, this embodiment can determine the first target conversion module that meets the target number from the first conversion module, and can determine the second target conversion module that meets the target number from the second conversion module, based on determining the target number of target conversion modules corresponding to the switching strategy.

[0084] In an embodiment of the present invention, when controlling the charging stack, in response to the target charging gun in at least one charging gun of the charging stack being connected to the vehicle, the initial output voltage required by the charging stack at the current moment and the target output voltage required by the charging stack to end charging the vehicle can be determined. According to the remaining capacity, initial output voltage and target output voltage of the first charging port where the target charging gun is located, the switching strategy to be executed by multiple 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 can be controlled to charge the vehicle until the vehicle's power state is detected to be fully charged, thereby achieving the purpose of controlling the charging stack to charge the electric vehicle with a large current constant current and charging the electric vehicle with a high voltage constant voltage, thereby solving the technical problem of low working efficiency of the charging module of the charging stack, and further achieving the technical effect of improving the working efficiency of the charging module of the electric charging stack.

[0085] The technical solution of the embodiment of the present invention is illustrated below in conjunction with preferred implementation modes.

[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 models. In the prior art, the charging needs of different electric vehicles are often compatible by switching power modules in parallel.

[0087] However, the above-mentioned parallel switching method completely relies on the voltage regulation capability of the current converter itself, thereby resulting in a technical problem of low working efficiency of the charging module of the charging stack.

[0088] In order to solve the above technical problems, an embodiment of the present invention proposes a control method for a charging stack, which can determine different DC-DC module switching strategies to be adopted according to the remaining capacity, initial output voltage and target output voltage of the first charging port where the target charging gun is located. According to different DC-DC module switching strategies, the idle DC-DC module is determined, and the idle DC-DC module is used to charge the vehicle in combination with the constant voltage and constant current two-stage charging strategy, thereby achieving the purpose of controlling the charging stack to charge the electric vehicle with a large current constant current and the electric vehicle with a high voltage constant voltage, thereby solving the technical problem of low working efficiency of the charging module of the charging stack, and further achieving the technical effect of improving the working efficiency of the charging module of the charging stack.

[0089] In this embodiment, the determined target conversion module can be controlled by the charging method based on the flexible charging pile to charge the vehicle until it is detected that the vehicle's power state reaches a full power state. For example, FIG2(a) is a flow chart of a charging method based on a flexible charging pile according to an embodiment of the present invention. As shown in FIG2(a), the method may include the following steps:

[0090] Step S201, obtaining the voltage and current required for charging the vehicle.

[0091] In the technical solution provided in the above step S201 of the present invention, when it is detected that the electric vehicle is connected to the target charging gun, the current status 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 status can be monitored in real time. Among them, the current status 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 vehicle charging, proceed to step S202 to determine a switching strategy based on 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 vehicle's battery.

[0093] In the technical solution provided in the above step S202 of the present invention, based on the initial charging voltage V1 and the initial charging current I1 in step S201, as well as the inherent capacity of the charging port and the remaining 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 maximum voltage V0 output by the DC-DC module is less than the currently required charging voltage V1, and at the same time, the currently required charging voltage V1 is also less than the voltage V2 required for fully charging the battery, that is, V0<V1<V2, then the first switching strategy in the following 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 currently required charging voltage V1, and the maximum voltage V0 output by the DC-DC module is less than the voltage V2 required for fully charging the battery, that is, V1<V0<V2, and at the same time, if the maximum current I0 output by the DC-DC module is greater than the currently required charging current I1, that is, I1<I0, then the second switching strategy in Table 1 below is selected as the module switching strategy when charging the battery of the electric vehicle.

[0096] In this embodiment, if the maximum voltage V0 output by the DC-DC module is greater than the currently 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, that is, V1<V0<V2, and at the same time, if the maximum current I0 output by the DC-DC module is less than the currently required charging current I1, that is, I1>I0, then the third switching strategy in Table 1 below is selected as the module switching strategy when charging the battery of the electric vehicle.

[0097] In this embodiment, if the maximum voltage V0 output by the DC-DC module is greater than the currently 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, that is, V0>V1>V2, then the fourth switching strategy in Table 1 below is selected as the fourth switching strategy when charging the battery of the electric vehicle.

[0098] Table 1 Switching strategy table

[0099]

[0100] After determining the switching strategy based on 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 vehicle's battery, proceed to step S203 to select and reserve an idle DC-DC module based on the determined switching strategy.

[0101] In the technical solution provided in step S203 of the present invention, firstly, any DC-DC module in the charging port that is not in working state and not reserved is defined as an idle module. The idle module selection and reservation principles for a certain strategy are as follows:

[0102] Principle 1: For charging needs from a certain charging port, the module of this charging port is used first;

[0103] Principle 2: If a DC-DC module needs to be called from other charging ports, the priority of calling the idle module is determined based on the distance between the charging ports;

[0104] Principle 3: When the charging stack has sufficient capacity, the idle modules of other charging ports are called to ensure that the remaining capacity of the charging port can perform basic charging functions. For example, one idle DC-DC module is reserved in each charging port. This is only an example and is not specifically limited.

[0105] After selecting and reserving an idle DC-DC module according to the determined switching strategy, the process proceeds to step S204, and the DC-DC module is controlled according to the determined switching strategy and charging strategy to charge the vehicle until the power state reaches a fully charged state.

[0106] In the technical solution provided in the above step S204 of the present invention, the above charging strategy may 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 may be determined based on the voltage required for constant voltage charging of the battery of the vehicle and the number of target conversion modules in series. The current of the target conversion module under the constant current charging strategy may be determined based on the current required for constant current charging of the battery of the vehicle and the number of target conversion modules in parallel.

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

[0108]

[0109] Among them, I c It can be used to indicate the current required for constant current charging of the battery.

[0110] In this embodiment, if the charging strategy is a constant voltage charging strategy, when the charging voltage of the battery is greater than V xWhen each working DC-DC module is controlled by a single-loop closed-loop voltage and current, a stable output of a high voltage for constant voltage charging of the electric vehicle battery is achieved. The control structure of the DC-DC module can be shown in FIG3(f), which is a schematic diagram of a control structure of another DC-DC module according to an embodiment of the present invention. The voltage error output by the DC-DC module is sent to the PWM generator for modulation through a proportional-integral controller. The reference voltage output by the DC-DC module can be obtained by the following formula (4):

[0111]

[0112] Among them, V c It can be used to indicate the voltage required for constant voltage charging of the battery.

[0113] In this embodiment, a charging method based on a flexible charging pile can be implemented by utilizing the topological structure of a flexible charging station. For example, FIG2(b) is a schematic diagram of a topological structure of a flexible charging station according to an embodiment of the present invention. As shown in FIG2(b), in this topological structure, a 380V AC power supply, multiple charging ports, and a matrix switch network may be included. Among them, the charging port may 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 illustration and are 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 it is detected that the battery power state reaches a full charge state. For example, FIG3(a) is a flow chart of a charging method based on a switching strategy according to an embodiment of the present invention. As shown in FIG3(a), the method may include the following steps:

[0115] Step S301 , calculating the number N2 of DC-DC modules connected in series required for the battery of the electric vehicle to reach a fully charged state.

[0116] In the technical solution provided in the above step S301 of the present invention, if the switching strategy is the first switching strategy, the target number of target conversion modules corresponding to the first switching strategy is determined to be the number of DC-DC modules connected in series, wherein the number of DC-DC modules connected in series can be expressed by the above formula (1).

[0117] After calculating the number of DC-DC modules connected in series required for the battery of the electric vehicle to reach a fully charged state, the process proceeds to step S302, and in the switching matrix network, the battery of the vehicle is charged using N2 DC-DC modules connected in series until the battery reaches a fully charged state.

[0118] In this embodiment, the determined target conversion module can be controlled by the charging method based on the switching strategy to charge the battery of the vehicle until it is detected that the battery power state reaches the full charge state. For example, FIG3(b) is a flowchart of another charging method based on the switching strategy according to an embodiment of the present invention. As shown in FIG3(b), the method may include the following steps:

[0119] Step S311 , calculating the number N2 of DC-DC modules connected in series required for the battery of the electric vehicle to reach a fully charged state.

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

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

[0122] After charging the battery of the vehicle using a separate DC-DC module in the switching matrix network, the process proceeds to step S313, where the remaining N2-1 DC-DC modules are connected in series with the separate DC-DC module in the switching matrix network, and the battery of the vehicle is charged using the N2 DC-DC modules connected in series until the battery reaches a fully charged state.

[0123] In this embodiment, the determined target conversion module can be controlled by the charging method based on the switching strategy to charge the battery of the vehicle until the battery reaches a fully charged state. For example, FIG3(c) is a flowchart of another charging method based on the switching strategy according to an embodiment of the present invention. As shown in FIG3(c), the method may include the following steps:

[0124] Step S321, calculating the number of DC-DC modules in series required for the battery of the electric vehicle to reach a fully charged state and the number of DC-DC modules in parallel required for high current charging.

[0125] In the technical solution provided in the above step S321 of the present invention, 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 DC-DC modules in series required for the battery of the vehicle to reach a fully charged state and the number of DC-DC modules in parallel required for high current charging, wherein the number of DC-DC modules in series can be expressed by the above formula (1), and the number of DC-DC modules in parallel can be expressed by the above formula (2).

[0126] After calculating the number of DC-DC modules in series required for the battery of the electric vehicle to reach a fully charged state and the number of DC-DC modules in parallel required for high-current charging, proceed to step S322, and use parallel DC-DC modules in the switching matrix network to charge the battery of the electric vehicle with a high current.

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

[0128] In this embodiment, if N1 < N2, N2-N1 DC-DC modules required to charge the vehicle's battery to a fully charged state are reserved in advance. Before the voltage of the vehicle's battery reaches V0, the vehicle's battery is charged with a large current using the N1 DC-DC modules connected in parallel in the switching matrix network. After the voltage of the vehicle's battery reaches V0, the reserved N2-N1 DC-DC modules are connected in series with the current N1 DC-DC modules in the switching matrix network, and the vehicle's battery is charged using the N2 DC-DC modules connected in series until the battery's power state reaches a fully charged state.

[0129] If N1>N2, before the battery voltage of the vehicle reaches V0, the N1 DC-DC modules connected in parallel are used in the switching matrix network to charge the battery of the vehicle with a large current. After the battery voltage 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 the N2 DC-DC modules connected in series until the battery reaches a full charge state, and at the same time, the N1-N2 redundant DC-DC modules are released as idle modules.

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

[0131] In this embodiment, the determined target conversion module can be controlled by the charging method based on the switching strategy to charge the battery of the vehicle until the battery reaches a fully charged state. For example, FIG3(d) is a flowchart of another charging method based on the switching strategy according to an embodiment of the present invention. As shown in FIG3(d), the method may include the following steps:

[0132] Step S331, calculating the parallel number N1 of DC-DC modules required for high current charging.

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

[0134] After calculating the number of parallel DC-DC modules required for high-current charging, the process proceeds to step S332, and the vehicle is charged using N1 parallel DC-DC modules in the switching matrix network until the vehicle is fully charged.

[0135] In this embodiment, the battery of the electric vehicle can be charged with a large constant current by connecting the DC-DC modules in the charging port in parallel. For example, FIG4(a) is a schematic diagram of a charging port according to an embodiment of the present invention. As shown in FIG4(a), the charging port may include at least: a capacitor, a resistor, an AC-DC module, a DC-DC module, a parallel switch, and a series switch. The parallel switch is in the on state, and the series switch is in the off state.

[0136] In this embodiment, the battery of the electric vehicle can be charged at a high constant voltage by connecting the DC-DC modules in series in the charging port. For example, FIG4(b) is a schematic diagram of another charging port according to an embodiment of the present invention. As shown in FIG4(b), the charging port may include at least: a capacitor, a resistor, an AC-DC module, a DC-DC module, a parallel switch, and a series switch. The parallel switch is in an off state, and the series switch is in an on state.

[0137] In this embodiment, when controlling the charging stack, in response to the target charging gun in at least one charging gun of the charging stack being connected to the vehicle, the initial output voltage required by the charging stack at the current moment and the target output voltage required by the charging stack to end charging the vehicle can be determined. According to the remaining capacity, initial output voltage and target output voltage of the first charging port where the target charging gun is located, the switching strategy to be executed by multiple 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 can be controlled to charge the vehicle until the vehicle's power state is detected to be fully charged, thereby achieving the purpose of controlling the charging stack to charge the electric vehicle with a large current constant current and charging the electric vehicle with a high voltage constant voltage, thereby solving the technical problem of low working efficiency of the charging module of the charging stack, and further achieving the technical effect of improving the working efficiency of the charging module of the electric charging stack.

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

[0139] Figure 5 Schematic diagram of a control device for a charging stack according to an embodiment of the present invention. Figure 5 As shown, the control device 500 of the charging stack may 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 used to determine the initial output voltage required by the charging stack at a current moment and the target output voltage required for the charging stack to finish charging the vehicle in response to a target charging gun among at least one charging gun of the charging stack being connected to the vehicle, wherein the target charging gun is any charging gun among the at least one charging gun.

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

[0142] The third determining unit 503 is configured 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.

[0143] The charging unit 504 is used to control the target conversion module to charge the vehicle until it is detected that the power state of the vehicle reaches a full-charge state.

[0144] Optionally, the second determination unit 502 may include: a first determination module, used to determine the power supply voltage to be output to the vehicle by multiple first conversion modules; and a second determination module, used to determine the switching strategy based on the remaining capacity, the power supply voltage, the initial output voltage and the target output voltage.

[0145] Optionally, the second determination module may include: a comparison submodule, used to compare the power 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, wherein the required power is used to represent the difference in power required for the vehicle to reach a fully charged state from the power state at the current moment, and the comparison result is used to represent the relationship between the power supply voltage, the initial output voltage and the target output voltage; a first determination submodule, used to determine the switching strategy based on the comparison result.

[0146] Optionally, the first determination submodule may determine the switching strategy based on the comparison result by executing the following steps: 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 to be the first switching strategy, wherein the first switching strategy is used to indicate that the connection rule between the plurality of first conversion modules is 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 stack at the current moment is less than the supply current to be output to the vehicle by the plurality of first conversion modules, determining the switching strategy to be the second switching strategy, wherein the second switching strategy is used to indicate that before the voltage of the vehicle reaches the supply voltage, any first conversion module among the plurality of first conversion modules is used to charge the vehicle, and after the voltage of the vehicle reaches the supply voltage, determining the connection rule between the plurality of first conversion modules to be the series rule, and / or the connection rule between the plurality of first conversion modules and the plurality of second conversion modules to be 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 stack at the current moment is less than the supply current to be output to the vehicle by the plurality of first conversion modules The 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 stack at the current moment is greater than the supply current to be output to the vehicle by the multiple first conversion modules, the switching strategy is determined to be the third switching strategy, wherein the third switching strategy is used to indicate that before the voltage of the vehicle reaches the supply voltage, the connection rule between the multiple first conversion modules is determined to be a parallel rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is a parallel rule, and after the voltage of the vehicle reaches the supply voltage, the connection rule between the multiple first conversion modules is determined to be a series rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is a 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 the fourth switching strategy, wherein the fourth switching strategy is used to indicate that the vehicle is charged using any first conversion module of the multiple first conversion modules, or the connection rule between the multiple first conversion modules is determined to be a parallel rule, and / or the connection rule between the multiple first conversion modules and the multiple second conversion modules is a parallel rule.

[0147] Optionally, the third determination unit 503 may include: a third determination module, used to determine at least one target conversion module from the first conversion module and the second conversion module based on a switching strategy in response to the remaining capacity satisfying the required power of the vehicle, wherein the required power is used to represent the difference in power required for the vehicle to reach a fully charged state from the power state at the current moment.

[0148] Optionally, the third determination module may include: a second determination submodule, used to determine the target number of target conversion modules corresponding to the switching strategy, wherein the target conversion module includes: a first target conversion module and a second target conversion module; a third determination submodule, used to determine a first target conversion module that meets the target number from the first conversion module, and determine a second target conversion module that meets the target number from the second conversion module, 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, a first determining unit is used to determine an initial output voltage required by the charging stack at a current moment and a target output voltage required for the charging stack to finish charging the vehicle in response to a target charging gun in at least one charging gun of the charging stack being connected to the vehicle, wherein the target charging gun is any charging gun in the at least one charging gun; a 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, the initial output voltage and the target output voltage of the first charging port where the target charging gun is located, 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 the plurality of second conversion modules in the second charging port. The connection rules between the blocks are as follows: the position of the second charging port in the charging stack is different from the position of the first charging port in the charging stack; the third determination 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 it is detected that the power state of the vehicle reaches the full charge state, thereby achieving the purpose of controlling the charging stack to charge the electric vehicle with a large current constant current and the electric vehicle with a high voltage constant voltage, thereby solving the technical problem of low working efficiency of the charging module of the charging stack, and then achieving the technical effect of improving the working efficiency of the charging module of the charging stack.

[0150] According to an embodiment of the present invention, a processor is further provided, the processor being used to run a program, wherein the program executes the control method of the charging stack in the embodiment when the program is run by the processor.

[0151] According to an embodiment of the present invention, there is further provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the control of the charging stack in the embodiment is executed when the program is running.

[0152] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the control of the charging stack in the embodiment.

[0153] According to an embodiment of the present invention, a computer program product is further provided. The computer program product includes a computer program. When the computer program is executed by a processor, the control of the charging stack in the embodiment is implemented.

[0154] According to an embodiment of the present invention, a computer program product is also provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium is used to store a computer program, and when the computer program is executed by a processor, the control of the charging stack in the embodiment is implemented.

[0155] According to an embodiment of the present invention, a computer program is also provided. When the computer program is executed by a processor, the control of the charging stack in the embodiment is realized.

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

[0157] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0158] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

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

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

[0161] If the integrated unit is implemented in the form of a software functional 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 solution of the present invention, or the part that contributes to the relevant technology or the whole or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, referred to as Read-Only Memory), random access memory (RAM, referred to as Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0162] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A control method for a charging stack, characterized in that: include: In response to a target charging gun among at least one charging gun of the charging stack being connected to the vehicle, determining an initial output voltage required by the charging stack at a current moment and a target output voltage required by the charging stack to end charging the vehicle, wherein the target charging gun is any charging gun among 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, 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, wherein the position of the second charging port in the charging stack is different from the position of the first charging port in the charging stack; Based on the remaining capacity and the switching strategy, determining at least one target conversion module from the first conversion module and the second conversion module; The target conversion module is controlled to charge the vehicle until it is detected that the power state of the vehicle reaches a fully charged state.

2. The method according to claim 1, characterized in that 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 a switching strategy to be executed by a plurality of first conversion modules in the first charging port, including: determining a supply voltage to be outputted by a plurality of the first conversion modules to the vehicle; The switching strategy is determined based on the remaining capacity, the supply voltage, the initial output voltage, and the target output voltage.

3. The method according to claim 2, characterized in that Determining the switching strategy based on the remaining capacity, the supply voltage, the initial output voltage, and the target output voltage includes: In response to the remaining capacity satisfying the required power of the vehicle, the power supply voltage, the initial output voltage and the target output voltage are compared to obtain a comparison result, wherein the required power is used to represent the difference in power required for the vehicle to reach the fully charged state from the power state at the current moment, and the comparison result is used to represent the relationship between the power supply voltage, the initial output voltage and the target output voltage; Based on the comparison result, the switching strategy is determined.

4. The method according to claim 3, characterized in that Determining the switching strategy based on the comparison result includes: 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 that the switching strategy is a first switching strategy, wherein the first switching strategy is used to indicate that a connection rule between the plurality of the first conversion modules is a series rule, and / or a connection rule between the plurality of the first conversion modules and the plurality of the second conversion modules is a rule of the series rule; In response to the comparison result that the power supply voltage is greater than the initial output voltage, the power supply voltage is less than the target output voltage, and the initial output current required by the charging stack at the current moment is less than the power 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, wherein the second switching strategy is used to indicate that before the voltage of the vehicle reaches the power supply voltage, the vehicle is charged using any first conversion module among the plurality of first conversion modules, and after the voltage of the vehicle reaches the power supply voltage, a connection rule between the plurality of first conversion modules is determined to be the series connection rule, and / or a connection rule between the plurality of first conversion modules and the plurality of second conversion modules is determined to be the series connection rule; In response to the comparison result that the power supply voltage is greater than the initial output voltage, the power supply voltage is less than the target output voltage, and the initial output current required by the charging stack at the current moment is greater than the power 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, wherein the third switching strategy is used to indicate that before the voltage of the vehicle reaches the power 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 determined to be the parallel rule, and after the voltage of the vehicle reaches the power 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 determined to be 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 that a connection rule between the plurality of first conversion modules is determined to be the parallel rule, and / or a connection rule between the plurality of first conversion modules and the plurality of second conversion modules is determined to be the parallel rule.

5. The method according to claim 1, characterized in that Based on the remaining capacity and the switching strategy, determining at least one target conversion module from the first conversion module and the second conversion module includes: In response to the remaining capacity satisfying the required power of the vehicle, based on the switching strategy, at least one target conversion module is determined from the first conversion module and the second conversion module, wherein the required power is used to represent the difference in power required for the vehicle to reach the fully charged state from the power state at the current moment.

6. The method according to claim 5, characterized in that Based on the switching strategy, determining at least one of the target conversion modules from the first conversion module and the second conversion module includes: Determine the target number of the target conversion module corresponding to the switching strategy, wherein the target conversion module includes: a first target conversion module and a second target conversion module; From the first conversion modules, determine the first target conversion modules that meet the target number, and from the second conversion modules, determine 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.

7. A control device for a charging stack, characterized in that: include: A first determining unit, configured to determine an initial output voltage required by the charging stack at a current moment and a target output voltage required by the charging stack to end charging the vehicle in response to a target charging gun among at least one charging gun of the charging stack being connected to the vehicle, wherein the target charging gun is any charging gun among the at least one charging gun; a second determining unit, configured 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, 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, wherein a position of the second charging port in the charging stack is different from a position of the first charging port in the charging stack; A third determining unit, configured 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; A charging unit is used to control the target conversion module to charge the vehicle until it is detected that the power state of the vehicle reaches the fully charged state.

8. 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 stack according to any one of claims 1 to 6.

9. An electronic device, characterized in that: include: A memory storing an executable program; A processor is used to run the program, wherein the program executes the control method of the charging stack according to any one of claims 1 to 6 when running.

10. 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, the device where the storage medium is located is controlled to execute the control method of the charging stack according to any one of claims 1 to 6.

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