ELECTRIC VEHICLE AND METHOD FOR CONTROLLING THE FAST CHARGING OF AN ELECTRIC VEHICLE

Abstract

An electric vehicle includes a battery, a motor, an inverter, a mode switch, and a control module. The control module comprises one or more processors and a storage medium that stores a computer-readable instruction. When the computer-readable instruction is executed by one or more processors, the one or more processors are configured to determine a fast-charging mode according to a connected charging device. The fast-charging mode includes a first fast-charging mode if the charging device is a DC distribution network device, and a second fast-charging mode if the charging device is a fast-charging device. Based on the result of this determination, the processors control the mode switch to change from the first fast-charging mode to the second fast-charging mode, or from the second fast-charging mode to the first fast-charging mode.

Description

TECHNICAL AREA

[0001] The present disclosure relates to an electric vehicle and a method for controlling the fast charging of an electric vehicle. BACKGROUND

[0002] A fast charging device can (e.g., directly) charge a battery installed in an electric vehicle by supplying the electric vehicle with direct current. The fast charging device can rectify the input alternating current to generate a direct voltage and then (e.g., directly) charge the electric vehicle via a DC-DC converter using a high-frequency isolation transformer.

[0003] Accordingly, to charge multiple vehicles, a fast charging device can be used for each of the multiple vehicles, and an AC distribution cable can be connected to each fast charging device. SUMMARY

[0004] One aspect of the present disclosure provides an electric vehicle and a fast-charging control method that can reduce the cost of installing a charging device and can be compatible with an existing fast-charging device.

[0005] According to one aspect of the present disclosure, an electric vehicle is provided which includes a battery, a motor, an inverter, a mode switch, and a control module. The control module may include one or more processors and a storage medium that stores a computer-readable instruction.When the computer-readable instruction is executed by one or more processors, the one or more processors may be configured to determine a fast-charging mode according to a connected charging device, wherein the fast-charging mode includes a first fast-charging mode if the charging device is a DC distribution network device, and a second fast-charging mode if the charging device is a fast-charging device, and that, based on a result of the determination, they control the mode-switching switch to change from the first fast-charging mode to the second fast-charging mode or from the second fast-charging mode to the first fast-charging mode.

[0006] The mode changeover switch can be a three-way switch. A first and second terminal of the three-way switch can be connected between a (+) terminal of the battery and the inverter. A third terminal of the three-way switch can be connected to the neutral point of a stator coil within the motor.

[0007] One or more processors can be configured to perform the determination based on a license plate received from the connected charging device.

[0008] If the fast charge mode is the first fast charge mode, the one or more processors can be configured to control the mode change switch so that the (+) terminal of the battery and the inverter are disconnected from each other and the (+) terminal of the battery is connected to the neutral point of the stator coil contained in the motor.

[0009] The electric vehicle can also include a pair of relays on the EV side, which are located on an input side. One or more processors can be configured to switch on the relay pair on the EV side.

[0010] One or more processors can be configured to operate the inverter as a step-down converter in the first fast-charging mode.

[0011] The step-down converter can contain three step-down converters that quickly charge the battery by using three stator coils contained in the motor as inductors in the first fast-charging mode.

[0012] The step-down converter can include a first step-down converter with a pair of switching elements in a first branch of the inverter and a first stator coil contained in the motor, a second step-down converter with a pair of switching elements in a second branch of the inverter and a second stator coil contained in the motor, and a third step-down converter with a pair of switching elements in a third branch of the inverter and a third stator coil contained in the motor.

[0013] The one or more processors can be configured to drive one of the first down converter, the second down converter, and the third down converter in the first fast-load mode, to drive at least two of the first down converter, the second down converter, and the third down converter in the first fast-load mode (e.g., essentially) simultaneously, and to drive at least two of the first down converter, the second down converter, and the third down converter in the first fast-load mode in a nested manner.

[0014] If the fast charging mode is the second fast charging mode, one or more processors can be configured to control the mode switch so that the (+) terminal of the battery is connected to the inverter.

[0015] The electric vehicle can also include a pair of relays on the EV side, which are located on an input side. One or more processors can be configured to switch on the relay pair on the EV side.

[0016] The DC distribution network can include a three-winding transformer configured to convert three-phase AC to first AC via a YY connection and to convert the three-phase AC to second AC via a Y-delta connection, a first rectifier configured to rectify the converted first AC, and a second rectifier configured to rectify the converted second AC. An output of the first rectifier and an output of the second rectifier can be connected in parallel.

[0017] An electric vehicle can be connected to the fast charging station. A large number of electric vehicles can be connected to the DC distribution network.

[0018] According to another aspect of the present disclosure, a method for controlling the fast charging of an electric vehicle, comprising a motor, a battery, an inverter, and a mode-changeover switch, is provided. The method includes a first operation of determining a fast-charging mode according to a connected charging device, wherein the fast-charging mode comprises a first fast-charging mode if the charging device is a DC distribution network device, and a second fast-charging mode if the charging device is a fast-charging device; and a second operation of controlling, based on a result of the determination, the mode-changeover switch to switch from the first fast-charging mode to the second fast-charging mode or from the second fast-charging mode to the first fast-charging mode.

[0019] The mode changeover switch can be a three-way switch. A first and second terminal of the three-way switch can be connected between a (+) terminal of the battery and the inverter. A third terminal of the three-way switch can be connected to the neutral point of a stator coil held in the motor.

[0020] The first process may involve carrying out the determination based on a flag received from the connected charging device.

[0021] If the fast charging mode is the first fast charging mode, the second operation may involve controlling the mode switch to disconnect the battery (+) terminal from the inverter and connect the battery (+) terminal to the neutral point of the stator coil in the motor. If the fast charging mode is the second fast charging mode, the second operation may involve controlling the mode switch to connect the battery (+) terminal to the inverter.

[0022] The method can further include operating the inverter as a step-down converter in the first fast-charging mode. The step-down converter can comprise three step-down converters that quickly charge the battery by using three stator coils contained in the motor as inductors in the first fast-charging mode.

[0023] The method may further comprise an operation of driving the first step-down converter, the second step-down converter and the third step-down converter in the first fast-charge mode, an operation of (e.g., substantially) simultaneously driving at least two of the first step-down converter, the second step-down converter and the third step-down converter in the first fast-charge mode, and an operation of driving at least two of the first step-down converter, the second step-down converter and the third step-down converter in a nested manner in the first fast-charge mode.

[0024] Several electric vehicles can be connected to the DC distribution network in parallel. One electric vehicle can be connected to the fast charging station.

[0025] According to an embodiment of the present disclosure, a fast charging mode can be determined according to a connected charging device, and a mode changeover switch can be controlled based on a result of the determination to enable switching between fast charging modes, so that a large number of electric vehicles can be charged via a single high-capacity DC distribution network device, thereby reducing the cost of installing a charging device and ensuring compatibility with an existing fast charging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other aspects, features and advantages of the present disclosure will be more clearly understood from the following detailed description in conjunction with the accompanying drawings, in which: Fig. 1A is a diagram showing a direct current distribution network device according to an embodiment of the present disclosure; Fig. 1B is a diagram showing a fast charging device according to an embodiment of the present disclosure; Fig. 2 illustrates an electric vehicle connected to a direct current distribution network between the charging devices according to an embodiment of the present disclosure; Fig. 3 is a diagram illustrating three downward converters; Fig. 4 is a flowchart illustrating a method for controlling the fast charging of an electric vehicle according to an embodiment of the present disclosure; and Fig. 5 is a block diagram of a computer device that is capable of fully or partially implementing a control module of an electric vehicle according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] Specific embodiments of the present disclosure are described below with reference to the accompanying drawings. The following detailed description is intended to provide a comprehensive understanding of a method, device, and / or system described in this specification. However, the detailed description is for illustrative purposes only, and the present disclosure is not limited to it.

[0028] If, during the description of the embodiments of the present disclosure, it is determined that a detailed description of a known technology related to the present disclosure could obscure the core of the disclosure, the detailed description will be omitted. Furthermore, terms that are subsequently described are defined taking into account the functions in the present disclosure, which may vary depending on the intention or custom of a user or operator. Therefore, the definition of these terms should be based on the content of the present description. The terminology used here serves to describe (e.g., only) certain embodiments and is not to be understood as a limitation of the embodiments.The singular forms "ein," "eine," and "die / der / das" used here are intended to include the plural forms unless the context clearly indicates otherwise. As used here, the term "and / or" includes any combination of the listed elements. Furthermore, it is understood that the terms "umbandt" and / or "umfassend," when used in this description, specify the presence of certain features, integers, steps, operations, elements, components, or a combination thereof, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0029] Fig. Figure 1A is a diagram showing a DC distribution network device according to an exemplary embodiment of the present disclosure. Fig. Figure 1B is a diagram showing a fast charging device according to an exemplary embodiment of the present disclosure.

[0030] First, as in Fig. Figure 1A shows a DC distribution network device 110 being a charging device with a large capacity, and a large number of electric vehicles EV can (e.g., essentially) be connected to and charged simultaneously on the DC distribution network device 110.

[0031] As on the left side of Fig. As illustrated in Figure 2, the DC distribution network device 110 can comprise three-phase AC into first AC via a Y-connection, a three-winding transformer 111 that converts the three-phase AC into second AC via a Y-delta connection (Y-Δ), a first rectifier 112 that rectifies the converted first AC, and a second rectifier 114 that rectifies the converted second AC. An output of the first rectifier 112 and an output of the second rectifier 114 can be connected in parallel. A high DC voltage of approximately 1000 V can be provided via the DC distribution network 110. In some embodiments, circuits for improving the power factor 113 and 115 can be provided at the outputs of the rectifiers 112 and 114, respectively.

[0032] Furthermore, a relay module 116, comprising a pair of relays 116a and 116b, and a connector C2 can be provided on an output side of the DC distribution network device 110. Connector C2 can be connected to a connector C1, which is provided on one side of an electric vehicle (EV). Generally, connector C2 can be referred to as the outlet and connector C1 as the inlet.

[0033] As in Fig. As illustrated in Figure 1B, (for example) only one electric vehicle (EV) can be connected to and charged by a fast charging unit 120. The fast charging unit 120 can include a DC / DC converter (not shown) with a rectifier unit and a high-frequency isolation transformer, and can rectify a three-phase AC voltage of approximately 400 V to generate a DC voltage of approximately 100 V to approximately 1000 V through the rectifier unit. The fast charging unit 120 can then charge an electric vehicle (e.g., directly) via the DC / DC converter. Although not illustrated in the drawings, the relay module 116 and the connector C2 can be provided on an output side of the fast charging unit 120.

[0034] Fig. Figure 2 illustrates an electric vehicle connected to a DC distribution network and a charging device, according to an embodiment of the present disclosure. Although not shown, a fast charging device can be connected in the same way via a relay module and a plug.

[0035] In the present disclosure, the electric vehicle may contain a high-voltage battery that is charged by charging devices 110 and / or 120, and may include a plug-in hybrid electric vehicle (PHEV) as well as a pure electric vehicle.

[0036] As on the right side of Fig. As illustrated in Figure 2, an electric vehicle 200 can include a battery BAT, a motor 210, an inverter 220, a mode changer switch 230, a control module 240, a connector C1 and a relay or relay module 250 with a pair of relays 251 and 252.

[0037] Connector C1 can be connected to connector C2 of charging devices 110 and / or 120, and relay 250 can connect the electric vehicle 200 to charging devices 110 and / or 120 under the control of control module 240, or disconnect the electric vehicle 200 from charging devices 110 and / or 120.

[0038] The battery BAT can be a high-voltage battery that can supply power to the motor 210 or can be charged with power from the charging devices 110 and / or 120.

[0039] Under the control of the control module 240, the inverter 220 can convert the power of the battery BAT into three-phase current in a driving mode to power the motor 210 of the electric vehicle 200, and the battery BAT can be charged in a fast-charging mode with direct current supplied by the charging devices 110 and / or 120.

[0040] Here, the fast charging mode can include a first fast charging mode if the charging device is the DC distribution network device 110, and a second fast charging mode if the charging device is the fast charging device 120.

[0041] As in Fig. As shown in Figure 2, the mode changeover switch 230 can be a three-way switch, wherein a first terminal and a second terminal of the three-way switch can be connected between a (+) terminal of the battery BAT and the inverter 220, and a third terminal of the three-way switch can be connected to a neutral point of the stator coils L1, L2 and L3 contained in the motor 210.

[0042] The control module 240 can control the mode switch so that it switches from the first fast charging mode to the second fast charging mode or from the second fast charging mode to the first fast charging mode, depending on the connected charging devices 110 and / or 120. The control module 240 can include an input / output unit 241, a control unit 242, and a storage unit 243.

[0043] The control module 240 described above can contain a processor (e.g., a computer, a microprocessor, a CPU, an ASIC, a logic circuit, or similar) and memory in which software instructions are stored. These instructions, when executed by the processor, provide various functions. The processor and memory can be implemented using separate semiconductor circuits. Alternatively, they can be implemented using a single integrated semiconductor circuit. One or more processors can be provided.

[0044] Specifically, when the charging devices 110 and / or 120 are connected, the input / output unit 241 can receive a flag signal from the charging devices 110 and / or 120 by communication and then transmit the received flag signal to the control unit 242.

[0045] The control unit 242 can determine the fast charging mode based on the flag signal received from the charging devices 110 and / or 120. For example, if the charging device is the DC distribution network device 110, the flag signal can be "1", and if the charging device is the fast charging device, the flag signal can be "0".

[0046] If the fast charging mode is the first fast charging mode, the control unit 242 can control the mode changeover switch 230 to disconnect the (+) terminal of the battery BAT and the inverter 220 from each other and connect the (+) terminal of the battery BAT to the zero point of the stator coils L1, L2 and L3 contained in the motor 210.

[0047] Separately, the control unit 242 can switch on a relay pair 250 on an EV side. In this case, a relay module 116 on one side of the DC distribution network device 110, a charging device, can also be switched on.

[0048] In the first fast charging mode, the control unit 242 can charge the battery BAT by controlling the inverter 220 with a step-down converter.

[0049] Fig. Figure 3 is a diagram showing three downward converters.

[0050] As in Fig. As shown in Figure 3, the step-down converter in the first fast-charging mode can comprise three step-down converters 310, 320 and 330, which quickly charge the battery BAT by using the three stator coils L1, L2 and L3 contained in the motor 210 as inductors.

[0051] Specifically, the step-down converter can comprise a first step-down converter 310 with a pair of switching elements S1 and S2 contained in a first branch of the inverter 220, and a first stator coil L1 contained in the motor 210, a second step-down converter 320 with a pair of switching elements S3 and S4 contained in a second branch of the inverter 220, and a second stator coil L2 contained in the motor 210, and a third step-down converter 330 with a pair of switching elements S5 and S6 contained in a third branch of the inverter 220, and a third stator coil L3 contained in the motor 210.

[0052] According to an embodiment of the present disclosure, the control unit 242 can control the switching elements S1, S2, S3, S4, S5 and S6 in the first fast-charging mode to control one of the first step-down converters 310, the second step-down converter 320 and the third step-down converter 330.

[0053] Alternatively, according to another embodiment of the present disclosure, the control unit 242 can control the switching elements S1, S2, S3, S4, S5 and S6 in the first fast-charging mode such that they (e.g., essentially) simultaneously control at least two of the first step-down converters 310, the second step-down converters 320 and the third step-down converters 330.

[0054] Alternatively, according to another embodiment of the present disclosure, the control unit 242 can control the switching elements S1, S2, S3, S4, S5 and S6 in a nested manner in the first fast-charging mode in order to control at least two of the first step-down converters 310, the second step-down converters 320 and the third step-down converters 330.

[0055] In nested control, at least two buck converters can be controlled sequentially. For example, if three buck converters are controlled in a nested manner, the three buck converters can be controlled with a phase difference of 120 degrees, and if two buck converters are controlled in a nested manner, the two buck converters can be controlled with a phase difference of 180 degrees.

[0056] If the fast charging mode is the second fast charging mode, the control unit 242 can control the mode change switch 230 so that the (+) terminal of the battery BAT is connected to the inverter 220.

[0057] Regardless, the control unit 242 can switch on the relay pair 250 on the EV side. In this case, a relay on one side of the fast charging device 120 (e.g., a charging station) can also be switched on.

[0058] Afterwards, the battery BAT can be charged (e.g. directly) by the fast charging unit 120.

[0059] When the fast charging mode is the driving mode, the control unit 242 can control the mode change switch 230 so that the (+) terminal of the battery BAT is connected to the inverter 220.

[0060] Separately, the control unit 242 can switch off the relay pair 250 on the EV side. In this case, the relays on the charging device sides 110 and / or 120 can also be switched off.

[0061] Finally, a program for performing the various functions of the control unit 242 described above can be stored in the memory unit 243.

[0062] According to an embodiment of the present disclosure, a fast charging mode can be determined according to a connected charging device, and a mode changeover switch can be controlled based on a result of the determination to enable switching between fast charging modes, so that a large number of electric vehicles can be charged via a single high-capacity DC distribution network device, thereby reducing the cost of installing a charging device and ensuring compatibility with an existing fast charging device.

[0063] Fig. Figure 4 is a flowchart illustrating a method for controlling the fast charging of an electric vehicle according to an embodiment of the present disclosure.

[0064] The following describes a method for controlling the fast charging of an electric vehicle according to an embodiment of the present disclosure with reference to the Fig. 1, Fig. 2, Fig. 3 to Fig. 4 described, whereby, for the sake of simplicity, descriptions corresponding to those of the present disclosure are used. Fig. 1, Fig. 2 to Fig. 3 overlap, should be omitted.

[0065] With reference to the Fig. 1, Fig. 2, Fig. 3 to Fig. 4. A method (S400) for controlling the fast charging of an electric vehicle according to an embodiment of the present disclosure can be started by a process of determining a fast charging mode according to a charging device (S401).

[0066] In particular, an electric vehicle 200 can receive a flag signal from the charging devices 110 and / or 120 and determine a fast charging mode based on the received flag signal.

[0067] The fast charging mode can include a first fast charging mode in which a connected charging device is a DC distribution network device 110, and a second fast charging mode in which the charging device is a fast charging device 120. For example, the flag signal can be "1" if the charging device is the DC distribution network device 110, and the flag signal can be "0" if the charging device is the fast charging device 120, as described above.

[0068] Subsequently, based on a result of the determination, the electric vehicle 200 can control a mode change switch to switch from a first fast charging mode to a second fast charging mode or from the second fast charging mode to the first fast charging mode (S401 and S406).

[0069] Here, a mode changeover switch 230 can be a three-way switch; a first terminal and a second terminal of the three-way switch can be connected to a space between a (+) terminal of a battery BAT and an inverter 220, and a third terminal of the three-way switch can be connected to a neutral point of stator coils L1, L2 and L3 contained in a motor 210, as described above.

[0070] Specifically, if the fast charging mode determined in operation S401 is the first fast charging mode (S402), the electric vehicle 200 can control the mode change switch 230 to disconnect the (+) terminal of the battery BAT and the inverter 220 from each other, and can connect the (+) terminal of the battery BAT to the neutral point of the stator coils L1, L2 and L3 contained in the motor 210 (S403).

[0071] Afterwards, the electric vehicle 200 can switch on a pair of relays 250 on one EV side (S404). In this case, a relay module 116 on one side of the DC distribution network device 110, a charging device, can also be switched on as described above.

[0072] Afterwards, the electric vehicle 200 can charge the battery BAT by controlling the inverter 220 with a step-down converter (S405).

[0073] Specifically, the step-down converter can comprise three step-down converters 310, 320 and 330, which quickly charge the battery BAT by using the three stator coils L1, L2 and L3 of the motor 210 as inductors.

[0074] Specifically, the step-down converter can comprise a first step-down converter 310 with a pair of switching elements S1 and S2 contained in a first branch of the inverter 220, and a first stator coil L1 contained in the motor 210, a second step-down converter 320 with a pair of switching elements S3 and S4 contained in a second branch of the inverter 220, and a second stator coil L2 contained in the motor 210, and a third step-down converter 330 with a pair of switching elements S5 and S6 contained in a third branch of the inverter 220, and a third stator coil L3 contained in the motor 210.

[0075] Afterwards, the electric vehicle 200 can control the switching elements S1, S2, S3, S4, S5 and S6 in the first fast charging mode to operate one of the first step-down converters 310, the second step-down converter 320 and the third step-down converter 330.

[0076] Alternatively, the electric vehicle 200 (e.g., essentially) can control at least two of the first step-down converters 310, the second step-down converters 320 and the third step-down converters 330 simultaneously by controlling the switching elements S1, S2, S3, S4, S5 and S6 in the first fast charging mode.

[0077] Alternatively, the electric vehicle 200 can control the switching elements S1, S2, S3, S4, S5, and S6 in a nested manner in the first fast-charging mode to operate at least two of the first step-down converters 310, the second step-down converters 320, and the third step-down converters 330. The nested manager can be a type of sequential control of at least two step-down converters, as described above.

[0078] Conversely, if the fast charging mode is not the first fast charging mode (S402), the electric vehicle 200 can control the mode change switch 230 so that the (+) terminal of the battery BAT is connected to the inverter 220 (S406).

[0079] Afterwards, the electric vehicle 200 can switch on the relay pair 250 on the EV side (S407). In this case, the relay on the fast charging device 120 can also be switched on as described above.

[0080] When the fast-charging mode is the driving mode, the electric vehicle 200 can control the mode changeover switch 230 so that the (+) terminal of the battery BAT is connected to the inverter 220. Regardless, the relay pair 250 on the EV side can be switched off. In this case, the relays on the charging device sides 110 and / or 120 can also be switched off, as described above.

[0081] According to an embodiment of the present disclosure, a fast charging mode can be determined according to a connected charging device, and a mode changeover switch can be controlled based on a result of the determination to enable switching between fast charging modes, so that a large number of electric vehicles can be charged via a single high-capacity DC distribution network device, thereby reducing the cost of installing a charging device and ensuring compatibility with an existing fast charging device.

[0082] Fig. Figure 5 is a block diagram of a computing device 500 that is capable of fully or partially implementing a control module 240 contained in an electric vehicle 200 according to an exemplary embodiment of the present disclosure.

[0083] As in Fig.As shown in Figure 5, the computing device 500 can comprise at least one processor 501, a computer-readable storage medium 502 and a communication bus 503.

[0084] The processor 501 can cause the computing device 500 to operate according to the examples described above. For example, the processor 501 can execute one or more programs stored on the computer-readable storage medium 502. The one or more programs can contain one or more computer-executable instructions. When executed by the processor 501, the one or more computer-executable instructions can be configured to cause the computing device 500 to perform operations according to the embodiments described.

[0085] The computer-readable storage medium 502 can be configured to store the computer-executable instructions or program code, program data, and / or other suitable forms of information. A program 502a stored on the computer-readable storage medium 502 can contain a series of instructions that can be executed by the processor 501. In one embodiment, the computer-readable storage medium 502 can be a memory (volatile memory such as random-access memory, non-volatile memory, or any combination thereof), one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, other types of storage media that the computing device 500 can access and that are capable of storing the desired information, or any suitable combination thereof.

[0086] The communication bus 503 can connect various other components of the computing device 500, including the processor 501 and the computer-readable storage medium 502.

[0087] The computing device 500 may also include one or more input / output interfaces 505, which provide an interface for one or more input / output devices 504, as well as one or more network communication interfaces 506. The input / output interface 505 and the network communication interface 506 may be connected to the communication bus 503. A network may be a cellular network, e.g., a Global Mobile Communications System (GSM), an Enhanced Data Rate for GSM Evolution (EDGE), a General Data Routes Radio Service (GPRS), a Code Division Multiple Access (CDMA), a Time Division Multiple Access (TD-CDMA), a Universal Mobile Telecommunications System (UMTS), a Long Term Evolution (LTE), or another cellular network.

[0088] The input / output device 504 can be connected to other components of the computing device 500 via the input / output interface 505. The exemplary input / output device 504 can include a pointing device (e.g., a mouse or trackpad), a keyboard, a touch input device (e.g., a touchpad or touchscreen), a speech or sound input device, input devices such as various types of sensor devices and / or photographic devices, and / or output devices such as a display device, a printer, a loudspeaker, and / or a network card. The exemplary input / output device 504 can be included in the computing device 500 as a component contained within the computing device 500, or it can be connected to the computing device 500 as a device separate from the computing device 500.

[0089] Exemplary embodiments of the present disclosure may include a program for carrying out the methods described herein on a computer and a computer-readable recording medium containing the program. The computer-readable recording medium may contain, alone or in combination with program instructions, local data files, local data structures, and the like. The medium may be one that has been specially developed and constructed for the purposes of the exemplary embodiment or one that is generally known and available to those with expertise in computer software.Examples of computer-readable media include magnetic media such as hard drives, floppy disks, and magnetic tapes; optical media such as CD-ROMs and DVDs; magneto-optical media such as optical discs; and hardware devices specifically configured for storing and executing program instructions, such as read-only memory (ROM), random-access memory (RAM), flash memory, and the like. Examples of programs can include both machine code, such as code generated by a compiler, and higher-level code that can be executed by the computer using an interpreter.

[0090] While exemplary embodiments have been shown and described above, it is obvious to the person skilled in the art that modifications and variations can be made without deviating from the scope of the present disclosure as defined by the attached claims.

Claims

[1] Electric vehicle, including: a battery; an engine; an inverter; a mode switch; and a control module, the control mode of which includes: one or more processors; and a storage medium that stores a computer-readable command, When the computer-readable instruction is executed by one or more processors, the one or more processors are configured as follows: to determine a fast charging mode depending on a connected charging device, wherein the fast charging mode includes a first fast charging mode if the charging device is a DC distribution network device, and a second fast charging mode if the charging device is a fast charging device; and Based on the result of the determination, the mode switch is controlled to switch from the first fast charging mode to the second fast charging mode or from the second fast charging mode to the first fast charging mode. [2] Electric vehicle according to claim 1, wherein The mode switch is a three-way switch. a first terminal and a second terminal of the three-way switch are connected between a (+) terminal of the battery and the inverter, and a third terminal of the three-way switch is connected to the zero point of a stator coil contained in the motor. [3] Electric vehicle according to claim 1, wherein the one or more processors are configured to perform the determination on the basis of a license plate received from the connected charging device. [4] Electric vehicle according to claim 2, wherein, if the fast charging mode is the first fast charging mode, the one or more processors are configured to control the mode change switch such that the (+) terminal of the battery and the inverter are disconnected from each other and the (+) terminal of the battery is connected to the neutral point of the stator coil contained in the motor. [5] Electric vehicle according to claim 4, further comprising: a pair of relays on an EV side, which is provided on an input side, where one or more processors are configured to switch on the pair of relays on the EV side. [6] Electric vehicle according to claim 2, wherein the one or more processors are configured to control the inverter as a step-down converter in the first fast charging mode. [7] Electric vehicle according to claim 6, wherein the step-down converter comprises three step-down converters which quickly charge the battery, wherein three stator coils contained in the motor are used as inductors in the first fast-charging mode. [8] The electric vehicle according to claim 6, wherein the step-down converter comprises: a first step-down converter comprising a pair of switching elements contained in a first branch of the inverter and a first stator coil contained in the motor; a second step-down converter, which includes a pair of switching elements in a second branch of the inverter and a second stator coil in the motor; and a third step-down converter, which includes a pair of switching elements in a third branch of the inverter and a third stator coil in the motor. [9] Electric vehicle according to claim 8, wherein the one or more processors are configured as follows: to power the first step-down converter, the second step-down converter, or the third step-down converter in the first fast-charge mode; to simultaneously drive at least two of the first downconverter, the second downconverter, and the third downconverter in the first fast-charge mode; and to drive at least two of the first downconverter, the second downconverter and the third downconverter nested in the first fast charge mode. [10] Electric vehicle according to claim 2, wherein, if the fast charging mode is the second fast charging mode, the one or more processors are configured to control the mode change switch so that the (+) terminal of the battery is connected to the inverter. [11] Electric vehicle according to claim 10, further comprising: a pair of relays on an EV side, which is provided on an input side, where one or more processors are configured to switch on the pair of relays on the EV side. [12] Electric vehicle according to claim 1, wherein the DC distribution network device includes: a three-winding transformer configured to convert three-phase alternating current into first alternating current according to YY circuit, and to convert the three-phase alternating current into second alternating current through Y-delta circuit; a first rectifier configured to rectify the converted first alternating current; and a second rectifier configured to rectify the converted second alternating current, and an output of the first rectifier and an output of the second rectifier are connected in parallel. [13] Electric vehicle according to claim 1, wherein an electric vehicle can be connected to the fast charging station, and Several electric vehicles can be connected to the DC distribution network equipment. [14] Method for controlling the fast charging of an electric vehicle comprising a motor, a battery, an inverter and a mode-changing switch, the method comprising: a first process of determining a fast charging mode according to a connected charging device, wherein the fast charging mode comprises a first fast charging mode if the charging device is a DC distribution network device, and a second fast charging mode if the charging device is a fast charging device; and a second control process, based on a result of the determination, of the mode change switch so that it switches from the first fast charging mode to the second fast charging mode or from the second fast charging mode to the first fast charging mode. [15] Method according to claim 14, wherein The mode switch is a three-way switch. a first terminal and a second terminal of the three-way switch are connected between a (+) terminal of the battery and the inverter, and a third terminal of the three-way switch is connected to the zero point of a stator coil contained in the motor t a. [16] Method according to claim 14, wherein the first step comprises carrying out the determination based on a identifier received from the connected charging device. [17] Method according to claim 15, wherein, If the fast charging mode is the first fast charging mode, the second process involves controlling the mode change switch to disconnect the (+) terminal of the battery and the inverter from each other and to connect the (+) terminal of the battery to the neutral point of the stator coil contained in the motor, and If the fast charging mode is the second fast charging mode, the second operation involves controlling the mode change switch to connect the (+) terminal of the battery to the inverter. [18] The method of claim 15, further comprising: a process of operating the inverter as a step-down converter in the first fast-charging mode, wherein the step-down converter contains three step-down converters, including a first step-down converter, a second step-down converter and a third step-down converter, wherein the battery is fast charged, with three stator coils contained in the motor being used as inductors in the first fast-charging mode. [19] The method of claim 18, further comprising: a process of operating the first down converter, the second down converter, or the third down converter in the first fast-charge mode; a process of simultaneously operating at least two of the first step-down converter, the second step-down converter and the third step-down converter in the first fast-charge mode; and a process of operating at least two of the first down converter, the second down converter and the third down converter in a nested manner in the first fast-charge mode. [20] Method according to claim 14, wherein several electric vehicles connected in parallel DC distribution network equipment may be connected, and an electric vehicle can be connected to the fast charging station.

Images