Single-phase and three-phase alternating current self-adaptive charging system and method
By designing a single-phase and three-phase AC adaptive charging system, and using voltage detection and rectifier modules to automatically adapt to the power supply type, the problem of poor flexibility in electric vehicles during charging is solved, and a more convenient charging process is achieved.
Patent Information
- Application Number
- CN202411705118.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-01-14
AI Technical Summary
When charging, electric vehicles are affected by the number of power phase lines, and have poor flexibility in use and cannot be converted at will, which leads to inconvenience in charging users.
Design a single-phase and three-phase AC adaptive charging system, including input power module, voltage detection module, main control unit, 7Kw rectifier module and 20Kw rectifier module, to determine the input voltage type through voltage detection and preset voltage transformer, automatically Control the rectifier module to adapt to single-phase or three-phase power supply to realize the conversion of AC to DC.
It realizes automatic adaptation of electric vehicles under different power supply types, improves charging flexibility and convenience of use, and solves the charging limitations caused by the limit on the number of power phase lines.
Smart Images

Figure CN119305444A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electric vehicle charging, and in particular to a single-phase and three-phase alternating current adaptive charging system, method, device and computer-readable storage medium. Background Art
[0002] In recent years, with the continuous improvement of people's awareness of energy conservation and emission reduction and green travel, the demand for new energy vehicles has been growing, and electric vehicles are one of the most typical representative products. In order to ensure that electric vehicles can replenish electricity in time and avoid affecting the normal use of users, electric vehicles are equipped with on-board chargers. When in use, they are directly connected to the power supply interface through the charging gun or charging plug connected to it. The connection is simple and easy to use. However, the on-board chargers currently used either have only a three-phase charging circuit inside, which is used in conjunction with a specially set charging pile; or only a single-phase charging circuit inside, so as to facilitate connection with a two-phase power supply. It can be seen that when charging electric vehicles, they will be affected by the number of power phase lines, and the two cannot be switched at will. Therefore, the flexibility of use is poor and the limitations are large, which brings many inconveniences to users' charging. Summary of the invention
[0003] The present application provides a single-phase and three-phase AC adaptive charging system, method, device and computer-readable storage medium, which can solve the technical problems in the prior art that electric vehicles are affected by the number of power phase lines when charging, and the two cannot be switched at will, resulting in poor flexibility and great limitations, which brings many inconveniences to users' charging.
[0004] In a first aspect, an embodiment of the present application provides a single-phase and three-phase AC adaptive charging system, the single-phase and three-phase AC adaptive charging system comprising: an input power module, a voltage detection module, a main control unit, a 7Kw rectifier module, a 20Kw rectifier module and a charging control module;
[0005] The input power module is used to provide a voltage input interface;
[0006] The voltage detection module is used to detect the voltage input interface and determine the type of the detected input voltage, where the type of the input voltage includes single-phase electricity and three-phase electricity;
[0007] The main control unit module is used to receive the input information sent by the voltage detection module, and control the single-phase input switch or the three-phase input switch according to the type of the input voltage, and determine whether to use a 7kW rectifier module or a 20Kw rectifier module and a 7kW rectifier module;
[0008] The 7Kw rectifier module is used to convert the input AC power of the input voltage into DC power;
[0009] The 20Kw rectifier module is used to convert the input AC power of the input voltage into DC power;
[0010] The charging control module is used to control the 7Kw rectifier module to output 300-750V DC power or the 20Kw rectifier module and the 7Kw rectifier module to output 300-750V DC power.
[0011] In combination with the first aspect, in one implementation, determining the type of the detected input voltage includes:
[0012] The detected input voltage is judged by a preset voltage transformer to determine the type of the input voltage, wherein there are three preset voltage transformers;
[0013] If the three preset voltage transformers all detect the input voltage, it is determined that the input voltage is three-phase electricity;
[0014] If one of the preset voltage transformers detects the input voltage, it is determined that the input voltage is single-phase electricity.
[0015] In combination with the first aspect, in one implementation, controlling a single-phase input switch or a three-phase input switch according to the type of the input voltage, and determining whether to use a 7kW rectifier module or a 20Kw rectifier module and a 7kW rectifier module, includes:
[0016] If the main control unit module determines that the type of the input voltage is three-phase electricity, the three-phase input switch is controlled to be closed, and the 20Kw rectifier module and the 7kW rectifier module are determined to be used at the same time;
[0017] If the main control unit module determines that the type of the input voltage is single-phase electricity, it controls the single-phase input switch to be closed and determines to use the 7kW rectifier mode.
[0018] In combination with the first aspect, in one implementation, the live wire L, the neutral wire N, and the ground wire PE of the single-phase input switch are connected in parallel with the live wire A, the neutral wire N, and the ground wire PE of the three-phase input switch.
[0019] In a second aspect, an embodiment of the present application provides a single-phase and three-phase AC adaptive charging method, wherein the single-phase and three-phase AC adaptive charging system comprises:
[0020] By detecting the voltage input interface, if the input voltage is detected, the type of the input voltage is determined, and the type of the input voltage includes single-phase electricity and three-phase electricity;
[0021] Controlling a single-phase input switch or a three-phase input switch according to the type of the input voltage, and determining whether to use a 7kW rectifier module or a 20Kw rectifier module and a 7kW rectifier module;
[0022] If it is determined to use the 7kW rectifier module, the input AC power of the input voltage is converted into DC power, and a DC power of 300-750V is output;
[0023] If it is determined to use the 20Kw rectifier module and the 7kW rectifier module, the input AC power of the input voltage is converted into DC power, and 300-750V DC power is output.
[0024] In combination with the second aspect, in one implementation, if the input voltage is detected, determining the type of the input voltage includes:
[0025] The detected input voltage is judged by a preset voltage transformer to determine the type of the input voltage, wherein there are three preset voltage transformers;
[0026] If the three preset voltage transformers all detect the input voltage, it is determined that the input voltage is three-phase electricity;
[0027] If one of the preset voltage transformers detects the input voltage, it is determined that the input voltage is single-phase electricity.
[0028] In combination with the second aspect, in one implementation, controlling a single-phase input switch or a three-phase input switch according to the type of the input voltage, and determining whether to use a 7kW rectifier module or a 20Kw rectifier module and a 7kW rectifier module, includes:
[0029] If it is determined that the type of the input voltage is three-phase electricity, the three-phase input switch is controlled to be closed, and it is determined that the 20Kw rectifier module and the 7kW rectifier module are used at the same time;
[0030] If it is determined that the type of the input voltage is single-phase electricity, the single-phase input switch is controlled to be closed, and it is determined to use a 7kW rectifier mode.
[0031] In combination with the second aspect, in one implementation, the live wire L, the neutral wire N, and the ground wire PE of the single-phase input switch are connected in parallel with the live wire A, the neutral wire N, and the ground wire PE of the three-phase input switch.
[0032] In a third aspect, an embodiment of the present application provides a single-phase and three-phase AC adaptive charging device, which includes a processor, a memory, and a single-phase and three-phase AC adaptive charging program stored in the memory and executable by the processor, wherein when the single-phase and three-phase AC adaptive charging program is executed by the processor, the steps of the single-phase and three-phase AC adaptive charging method as described above are implemented.
[0033] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a single-phase and three-phase AC adaptive charging program is stored. When the single-phase and three-phase AC adaptive charging program is executed by a processor, the steps of the single-phase and three-phase AC adaptive charging method as described above are implemented.
[0034] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:
[0035] By detecting the voltage input interface, if the input voltage is detected, the type of the input voltage is determined, and the types of the input voltage include single-phase electricity and three-phase electricity; according to the type of the input voltage, the single-phase input switch or the three-phase input switch is controlled, and it is determined whether to use a 7kW rectifier module or a 20Kw rectifier module and a 7kW rectifier module; if it is determined to use the 7kW rectifier module, the input AC power of the input voltage is converted into DC power, and 300-750V DC power is output; if it is determined to use the 20Kw rectifier module and the 7kW rectifier module, the input AC power of the input voltage is converted into DC power, and 300-750V DC power is output. This solves the problem in the related art that when charging, electric vehicles are affected by the number of power phase lines and the two cannot be converted at will, so the flexibility of use is poor, the limitations are large, and many inconveniences are brought to users' charging. Automatic adaptation to different power types is achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0036] Figure 1 This is a flow chart of the first embodiment of the single-phase and three-phase AC adaptive charging method of the present application;
[0037] Figure 2 This is a functional module diagram of an embodiment of a single-phase and three-phase AC adaptive charging system of the present application;
[0038] Figure 3 This is a schematic diagram of the hardware structure of the single-phase and three-phase AC adaptive charging equipment involved in the embodiment of the present application. DETAILED DESCRIPTION
[0039] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0040] First, some technical terms in the present application are explained to facilitate those skilled in the art to understand the present application.
[0041] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0042] In a first aspect, an embodiment of the present application provides a single-phase and three-phase alternating current adaptive charging method.
[0043] In one embodiment, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the single-phase and three-phase AC adaptive charging method of the present application. Figure 1 As shown, the single-phase and three-phase AC adaptive charging method includes:
[0044] Step S10: Detecting the voltage input interface, if an input voltage is detected, determining the type of the input voltage, the type of the input voltage including single-phase electricity and three-phase electricity;
[0045] Exemplarily, the voltage input interface is detected, and if the input voltage is detected, the type of the input voltage is determined, and the type of the input voltage includes single-phase electricity and three-phase electricity. For example, when the input voltage is detected, the phase information of the input voltage is obtained, and the type of the input voltage is determined by the phase information. For example, if the phase information of the input voltage obtained is 1 phase, it is determined to be single-phase electricity; if the phase information of the input voltage obtained is 3 phases, it is determined to be three-phase electricity.
[0046] Specifically, the detected input voltage is judged by a preset voltage transformer to determine the type of the input voltage, wherein there are three preset voltage transformers; if all three preset voltage transformers detect the input voltage, it is determined that the input voltage is three-phase electricity; if one preset voltage transformer detects the input voltage, it is determined that the input voltage is single-phase electricity.
[0047] Step S20: controlling a single-phase input switch or a three-phase input switch according to the type of the input voltage, and determining whether to use a 7kW rectifier module or a 20Kw rectifier module and a 7kW rectifier module;
[0048] For example, if the input voltage type is determined to be three-phase electricity, the three-phase input switch is controlled to be closed, and the 20Kw rectifier module and the 7kW rectifier module are determined to be used at the same time; if the input voltage type is determined to be single-phase electricity, the single-phase input switch is controlled to be closed, and the 7kW rectifier module is determined to be used. The live wire L, neutral wire N, and ground wire PE of the single-phase input switch are connected in parallel with the live wire A, neutral wire N, and ground wire PE of the three-phase input switch.
[0049] Step S30: if it is determined to use the 7kW rectifier module, the input AC power of the input voltage is converted into DC power, and a DC power of 300-750V is output;
[0050] Exemplarily, when the input voltage type is single-phase electricity, a 7kW rectifier module is used to convert the input AC power of the input voltage into DC power and output 300-750v DC power.
[0051] Step S40: If it is determined to use the 20Kw rectifier module and the 7kW rectifier module, the input AC power of the input voltage is converted into DC power, and 300-750V DC power is output.
[0052] Exemplarily, when the input voltage type is three-phase electricity, a 20Kw rectifier module and a 7kW rectifier module are used to convert the input AC power of the input voltage into DC power and output 300-750v DC power.
[0053] In this embodiment, by detecting the voltage input interface, if the input voltage is detected, the type of the input voltage is determined, and the types of the input voltage include single-phase electricity and three-phase electricity; according to the type of the input voltage, the single-phase input switch or the three-phase input switch is controlled, and it is determined whether to use a 7kW rectifier module or a 20Kw rectifier module and a 7kW rectifier module; if it is determined to use the 7kW rectifier module, the input AC power of the input voltage is converted into DC power, and 300-750V DC power is output; if it is determined to use the 20Kw rectifier module and the 7kW rectifier module, the input AC power of the input voltage is converted into DC power, and 300-750V DC power is output. This solves the problem in the related art that electric vehicles are affected by the number of power phase lines when charging, and the two cannot be converted at will, so the flexibility of use is poor, the limitations are large, and many inconveniences are brought to users' charging. Automatic adaptation to different power types is achieved.
[0054] In a second aspect, the embodiments of the present application also provide a single-phase and three-phase AC adaptive charging system.
[0055] In one embodiment, referring to Figure 2 , Figure 2 This is a functional module diagram of an embodiment of the single-phase and three-phase AC adaptive charging system of the present application. Figure 2 As shown, the single-phase and three-phase AC adaptive charging system includes:
[0056] The input power module 10 is used to provide a voltage input interface;
[0057] The voltage detection module 20 is used to detect the voltage input interface and determine the type of the detected input voltage, where the type of the input voltage includes single-phase electricity and three-phase electricity;
[0058] The main control unit module 30 is used to receive the input information sent by the voltage detection module, and control the single-phase input switch or the three-phase input switch according to the type of the input voltage, and determine whether to use a 7kW rectifier module or a 20Kw rectifier module and a 7kW rectifier module;
[0059] The 7Kw rectifier module 40 is used to convert the input AC power of the input voltage into DC power;
[0060] The 20Kw rectifier module 50 is used to convert the input AC power of the input voltage into DC power;
[0061] The charging control module 60 is used to control the 7Kw rectifier module to output 300-750V DC power or the 20Kw rectifier module and the 7Kw rectifier module to output 300-750V DC power.
[0062] Furthermore, in one embodiment, the voltage detection module 20 is used to:
[0063] The detected input voltage is judged by a preset voltage transformer to determine the type of the input voltage, wherein there are three preset voltage transformers;
[0064] If the three preset voltage transformers all detect the input voltage, it is determined that the input voltage is three-phase electricity;
[0065] If one of the preset voltage transformers detects the input voltage, it is determined that the input voltage is single-phase electricity.
[0066] Furthermore, in one embodiment, the charging control module 60 is used to:
[0067] If the main control unit module determines that the type of the input voltage is three-phase electricity, the three-phase input switch is controlled to be closed, and the 20Kw rectifier module and the 7kW rectifier module are determined to be used at the same time;
[0068] If the main control unit module determines that the type of the input voltage is single-phase electricity, it controls the single-phase input switch to be closed and determines to use the 7kW rectifier mode.
[0069] Furthermore, in one embodiment, the single-phase and three-phase AC adaptive charging system also includes a new module for: connecting the live wire L, neutral wire N, and ground wire PE of the single-phase input switch in parallel with the live wire A, neutral wire N, and ground wire PE of the three-phase input switch.
[0070] Among them, the functional implementation of each module in the above-mentioned single-phase and three-phase AC adaptive charging system corresponds to the steps in the above-mentioned single-phase and three-phase AC adaptive charging method embodiments, and their functions and implementation processes are no longer repeated here.
[0071] In a third aspect, the embodiments of the present application provide a single-phase and three-phase AC adaptive charging device, which can be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.
[0072] Reference Figure 3 , Figure 3 The hardware structure diagram of the single-phase and three-phase AC adaptive charging device involved in the embodiment of the present application is shown in FIG. In the embodiment of the present application, the single-phase and three-phase AC adaptive charging device may include a processor, a memory, a communication interface, and a communication bus.
[0073] The communication bus may be of any type and is used to interconnect the processor, the memory, and the communication interface.
[0074] The communication interface includes input / output (I / O) interface, physical interface and logical interface, etc., which are used to realize the interconnection of devices inside the single-phase and three-phase AC adaptive charging equipment, and the interface used to realize the interconnection between the single-phase and three-phase AC adaptive charging equipment and other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber optic interface, an ATM interface, etc.; the user device can be a display (Display), a keyboard (Keyboard), etc.
[0075] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.
[0076] The processor may be a general-purpose processor, which may call the single-phase and three-phase AC adaptive charging program stored in the memory and execute the single-phase and three-phase AC adaptive charging method provided in the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the single-phase and three-phase AC adaptive charging program is called may refer to the various embodiments of the single-phase and three-phase AC adaptive charging method of the present application, which will not be repeated here.
[0077] Those skilled in the art will understand that Figure 3 The hardware structure shown in the figure does not constitute a limitation on the present application, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.
[0078] In a fourth aspect, an embodiment of the present application also provides a computer-readable storage medium.
[0079] The computer-readable storage medium of the present application stores a single-phase and three-phase AC adaptive charging program, wherein when the single-phase and three-phase AC adaptive charging program is executed by a processor, the steps of the single-phase and three-phase AC adaptive charging method as described above are implemented.
[0080] Among them, the method implemented when the single-phase and three-phase AC adaptive charging program is executed can refer to the various embodiments of the single-phase and three-phase AC adaptive charging method of the present application, and will not be repeated here.
[0081] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.
[0082] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings 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 limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.
[0083] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.
[0084] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or. For example, A / B can mean A or B. The “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.
[0085] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.
[0086] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.
[0087] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A single-phase and three-phase AC adaptive charging system, characterized in that: The single-phase and three-phase AC adaptive charging system includes: an input power module, a voltage detection module, a main control unit module, a 7Kw rectifier module, a 20Kw rectifier module and a charging control module; The input power module is used to provide a voltage input interface; The voltage detection module is used to detect the voltage input interface and determine the type of the detected input voltage, where the type of the input voltage includes single-phase electricity and three-phase electricity; The main control unit module is used to receive the input information sent by the voltage detection module, and control the single-phase input switch or the three-phase input switch according to the type of the input voltage, and determine whether to use a 7kW rectifier module or a 20Kw rectifier module and a 7kW rectifier module; The 7Kw rectifier module is used to convert the input AC power of the input voltage into DC power; The 20Kw rectifier module is used to convert the input AC power of the input voltage into DC power; The charging control module is used to control the 7Kw rectifier module to output 300-750V DC power or the 20Kw rectifier module and the 7Kw rectifier module to output 300-750V DC power.
2. The single-phase and three-phase AC adaptive charging system as claimed in claim 1, characterized in that: The determining the type of the detected input voltage comprises: The detected input voltage is judged by a preset voltage transformer to determine the type of the input voltage, wherein there are three preset voltage transformers; If the three preset voltage transformers all detect the input voltage, it is determined that the input voltage is three-phase electricity; If one of the preset voltage transformers detects an input voltage, it is determined that the input voltage is single-phase electricity.
3. The single-phase and three-phase AC adaptive charging system as claimed in claim 1, characterized in that: The controlling of the single-phase input switch or the three-phase input switch according to the type of the input voltage and determining whether to use a 7kW rectifier module or a 20Kw rectifier module and a 7kW rectifier module includes: If the main control unit module determines that the type of the input voltage is three-phase electricity, the three-phase input switch is controlled to be closed, and the 20Kw rectifier module and the 7kW rectifier module are determined to be used at the same time; If the main control unit module determines that the type of the input voltage is single-phase electricity, it controls the single-phase input switch to be closed and determines to use the 7kW rectifier mode.
4. The single-phase and three-phase AC adaptive charging system as claimed in claim 1, characterized in that: The live wire L, the neutral wire N, and the ground wire PE of the single-phase input switch are connected in parallel with the live wire A, the neutral wire N, and the ground wire PE of the three-phase input switch.
5. A single-phase and three-phase AC adaptive charging method, characterized in that: The single-phase and three-phase AC adaptive charging system includes: By detecting the voltage input interface, if the input voltage is detected, the type of the input voltage is determined, and the type of the input voltage includes single-phase electricity and three-phase electricity; Controlling a single-phase input switch or a three-phase input switch according to the type of the input voltage, and determining whether to use a 7kW rectifier module or a 20Kw rectifier module and a 7kW rectifier module; If it is determined to use the 7kW rectifier module, the input AC power of the input voltage is converted into DC power, and a DC power of 300-750V is output; If it is determined to use the 20Kw rectifier module and the 7kW rectifier module, the input AC power of the input voltage is converted into DC power, and 300-750V DC power is output.
6. The single-phase and three-phase AC adaptive charging method as claimed in claim 5, characterized in that: If the input voltage is detected, determining the type of the input voltage includes: The detected input voltage is judged by a preset voltage transformer to determine the type of the input voltage, wherein there are three preset voltage transformers; If the three preset voltage transformers all detect the input voltage, it is determined that the input voltage is three-phase electricity; If one of the preset voltage transformers detects the input voltage, it is determined that the input voltage is single-phase electricity.
7. The single-phase and three-phase AC adaptive charging method as claimed in claim 5, characterized in that: The method of controlling a single-phase input switch or a three-phase input switch according to the type of the input voltage and determining whether to use a 7kW rectifier module or a 20Kw rectifier module and a 7kW rectifier module comprises: If it is determined that the type of the input voltage is three-phase electricity, the three-phase input switch is controlled to be closed, and it is determined that the 20Kw rectifier module and the 7kW rectifier module are used at the same time; If it is determined that the type of the input voltage is single-phase electricity, the single-phase input switch is controlled to be closed, and it is determined to use a 7kW rectifier mode.
8. The single-phase and three-phase AC adaptive charging method as claimed in claim 5, characterized in that: The live wire L, the neutral wire N, and the ground wire PE of the single-phase input switch are connected in parallel with the live wire A, the neutral wire N, and the ground wire PE of the three-phase input switch.
9. A single-phase and three-phase AC adaptive charging device, characterized in that: The single-phase and three-phase AC adaptive charging device includes a processor, a memory, and a single-phase and three-phase AC adaptive charging program stored in the memory and executable by the processor. When the single-phase and three-phase AC adaptive charging program is executed by the processor, the steps of the single-phase and three-phase AC adaptive charging method as described in any one of claims 5 to 8 are implemented.
10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a single-phase and three-phase AC adaptive charging program, wherein when the single-phase and three-phase AC adaptive charging program is executed by the processor, the steps of the single-phase and three-phase AC adaptive charging method as described in any one of claims 5 to 8 are implemented.