Smart power supply system

Abstract

This invention provides a smart power supply system, including a mains power terminal, an electric vehicle, a smart switch, and a power user terminal. The smart switch has multiple connection modes, including a connection mode between the mains power grid and the electric vehicle to the power user terminal, a connection mode between the electric vehicle and the power user terminal, and a connection mode between the electric vehicle and the mains power grid and the power user terminal. The electric vehicle can selectively connect to the smart switch. The smart switch determines whether the state of the power grid system has changed based on signals from the mains power terminal, the electric vehicle, or the power user terminal. If so, the smart switch switches to one of the connection modes. By switching the connection modes in real time through the operation of the smart switch, a smart control power supply path can be formed, which can make good use of the electric vehicle's electrical energy, reduce construction costs and construction space, and reduce the load on the power grid.

Description

Technical Field

[0001] This invention relates to a power supply system, and more particularly to a smart power supply system. Prior Technology

[0002] With industrial development and population growth, the electricity demand of industrial equipment and personal electronic devices is increasing. In recent years, in response to environmental protection trends, many countries have adopted green energy sources (such as solar and wind power) for power generation. However, the generation of green power sources is limited by the natural environment, resulting in a decrease in the stability of the power supply. When power outages occur in certain areas, they cause great losses to people, such as refrigerators stopping, computers losing power and data being lost, aquarium air pumps stopping, and breathing apparatus stopping, endangering lives.

[0003] Existing power grid system technologies provide an energy storage system or backup system. This system stores energy as a backup when power is available normally, and provides power for use when power supply is insufficient. The energy storage system or backup system may include a mains power terminal, a user terminal, a switching device, and an energy storage backup device. The switching device is connected to the mains power terminal, the user terminal, and the energy storage backup device, which provides stable power to the user terminal.

[0004] However, most existing energy storage or backup systems use uninterruptible power supplies (UPS) or diesel generators. The size of these devices is directly proportional to the power supply capacity. Therefore, if it is desired to provide sufficient power supply using UPS or diesel generators, additional UPS or diesel generators need to be installed, which not only affects the load of the existing power grid system but also incurs significant construction costs and space requirements.

[0005] Therefore, given the current technology, there is indeed a need to provide more improved solutions without adding uninterruptible power supply systems or diesel generators, and within the capacity of the existing power grid system, while reducing unnecessary construction costs and space requirements. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the main objective of this invention is to provide a smart power supply system that can make good use of vehicle electrical energy by intelligently controlling the power supply path, thereby reducing construction costs and space requirements, and reducing the load on the power grid system.

[0007] To achieve the above objectives, the main technical means adopted by this invention is to install the smart power supply system on a power grid system. The smart power supply system includes: A mains power terminal provides a first signal; An electric vehicle that provides a second signal; One power consumer provides a power demand signal; A smart switch having multiple connection modes, including a connection mode between a power grid and an electric vehicle to a power consumer, a connection mode between an electric vehicle and a power consumer, and a connection mode between an electric vehicle and a power grid and a power consumer. The electric vehicle can selectively connect to the smart switch; the smart switch determines whether the state of the power grid system has changed based on the first signal, the second signal, or the power demand signal. If so, the smart switch will switch to one of the connection modes.

[0008] Through the above structure, the smart switch can determine whether the power grid system has changed state based on the first signal from the mains power terminal, the second signal from the electric vehicle, and the power demand signal from the user terminal. When the power grid system state changes, the smart switch switches one of the connection modes. The user terminal can switch the connection mode in real time under the operation of the smart switch to form a smart power supply path. In addition to making good use of the vehicle's electric energy, it can also reduce construction costs and construction space, and reduce the load on the mains power grid system. Simple Explanation of the Diagram

[0009] Figure 1 is a system architecture block diagram of the first embodiment of the intelligent power supply system of the present invention; Figure 2 is a block diagram of the circuit architecture of the smart switch of the present invention; Figure 3 is a system architecture block diagram of the second embodiment of the intelligent power supply system of the present invention; Figure 4 is a system architecture block diagram of the third embodiment of the intelligent power supply system of the present invention; Figure 5 is a system architecture block diagram of the fourth embodiment of the intelligent power supply system of the present invention; Figure 6 is a system architecture block diagram of the fifth embodiment of the intelligent power supply system of the present invention. Implementation

[0010] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0011] As shown in Figure 1, an embodiment of the smart power supply system of the present invention is installed on a power grid system, which refers to an electrical grid or electricity network. The smart power supply system includes a mains power terminal 10, an electric vehicle 20, a smart switch 30, and a power consumption terminal 40. The smart switch 30 adjusts and controls the establishment of wired / wireless signal connections or the interruption of signal connections between the mains power terminal 10, the electric vehicle 20, and the power consumption terminal 40. Specifically, the smart switch 30 enables the mains power terminal 10 to establish a connection with the electric vehicle 20 and / or the power consumption terminal 40, or enables the electric vehicle 20 to establish a connection with the mains power terminal 10 and / or the power consumption terminal 40. Moreover, the electric vehicle 20 can selectively connect to the smart switch 30. Thus, the mains power terminal 10 can provide power to the electric vehicle 20 and / or the power consumer 40, or enable the electric vehicle 20 to provide power to the mains power terminal 10 and / or the power consumer 40. In this embodiment, when it is desired for the electric vehicle 20 to provide power to the mains power terminal 10 and / or the power consumer 40, since the smart power supply system of the present invention has one or more electric vehicles 20 connected, the electric vehicles 20 will collectively provide power to the mains power terminal 10 and / or the power consumer 40.

[0012] In detail, the signal provided by the mains power terminal 10 is a first signal (such as a DC power signal, an AC power signal, and the power frequency), the signal provided by the electric vehicle 20 is a second signal, and the power consumption terminal 40 generates a power demand signal when the user turns on the device (such as turning on a TV, a machine, or other load). The smart switch 30 has multiple connection modes, including a grid-to-home and-vehicle (G2H&V) connection mode, a grid-to-home and-vehicle-to-power-consumer (G&V2H) connection mode, an interrupt (INT) connection mode, a vehicle-to-home (V2H) connection mode, a vehicle-to-grid and-home (V2G&H) connection mode, and a renewable energy-to-vehicle (R2V) connection mode.

[0013] First, the pre-set connection mode of the smart switch 30 is the grid-to-load (G2H&V) connection mode. In the grid-to-load (G2H&V) connection mode, the smart switch 30 establishes a signal connection between the mains power terminal 10, the electric vehicle 20, and the power user terminal 40. The mains power terminal 10 transmits the first signal to the electric vehicle 20 and / or the power user terminal 40 to charge the electric vehicle 20 and to drive the device of the power user terminal 40 to operate.

[0014] In these connection modes, the smart switch 30 will continuously monitor the first signal, the second signal, or the power demand signal to determine whether the state of the power grid system has changed based on the first signal, the second signal, or the power demand signal. When the smart switch 30 determines that the state of the power grid system has changed, the smart switch 30 will switch from the original connection mode to other connection modes. Specifically, the smart switch 30 operates in the grid-to-load (G2H&V) connection mode. When the smart switch 30 determines that the state of the grid system has changed, it switches from the grid-to-load (G2H&V) connection mode to another connection mode. This switch to another connection mode refers to one of the following: the interrupt (INT) connection mode, the electric vehicle-to-consumer (V2H) connection mode, the electric vehicle-to-grid and-consumer (V2G&H) connection mode, or the grid and electric vehicle-to-consumer (G&V2H) connection mode. This allows the smart switch 30 to establish different wired / wireless signal connections or interrupt signal connections with the mains terminal 10, the electric vehicle 20, and / or the consumer terminal 40. In this embodiment, the second signal may include power information, charging / discharging status information, voltage, current, or power. The electric vehicle 20 has a power storage device 21 for storing the first signal. In this embodiment, the power storage device 21 can be a battery. The smart switch 30 obtains the power information and charging / discharging status information of the power storage device 21 through the second signal, enabling the smart switch 30 to know the current power supply of the electric vehicle 20. Accordingly, the smart switch 30 can control the charging or discharging of the electric vehicle 20. In this embodiment, the power grid system refers to all devices connected to the smart switch 30, such as the mains power terminal 10, the electric vehicle 20, and the power consumption terminal 40.

[0015] The details of how the smart switch 30 continuously monitors the first signal, the second signal, or the power demand signal to determine whether a change in the power grid system state has occurred are as follows.

[0016] In this embodiment, when the smart switch 30 is in the grid-to-load (G2H&V) connection mode, if the smart switch 30 detects that the sum of the power demand signal and the second signal is greater than an upper limit of the first signal, the smart switch 30 will generate a control signal to adjust the first signal transmitted to the electric vehicle 20. Specifically, since the sum of the power demand signal and the second signal required by the power user 40 is already greater than the first signal, in order to ensure that the power user 40 can be adequately supplied with the first signal, the smart switch 30 reduces the charging current or power of the first signal to the electric vehicle 20 to achieve the adjustment effect, thereby increasing the supply of the first signal to the power user 40. The smart switch 30 continuously monitors whether the sum of the power demand signal and the second signal exceeds an upper limit value of the first signal. When the first signal provided by the smart switch 30 to the electric vehicle 20 is terminated (i.e., the value of the first signal provided to the electric vehicle 20 is zero), and when the smart switch 30 detects that the power demand signal exceeds an upper limit value of the first signal, the smart switch 30 switches from the grid-to-load (G2H&V) connection mode to the grid-to-electric vehicle-to-consumer (G&V2H) connection mode. The smart switch 30 generates the control signal to ensure that the mains terminal 10 and the electric vehicle 20 correspondingly provide the first signal and the second signal to the consumer terminal 40. In this embodiment, the upper limit value of the first signal can be a rated power, a rated voltage, or a rated current of the mains terminal 10.

[0017] In this embodiment, when the smart switch 30 is in one of the connection modes, when the smart switch 30 detects that one of the voltage / current or power in the first signal, the voltage / current or power in the second signal, and the voltage / current or power in the power demand signal exceeds the voltage, current, or power that the line between the smart switch 30 and the mains terminal 10, the smart switch 30 and the electric vehicle 20, or the smart switch 30 and the power user terminal 40 can withstand, the smart switch 30 will switch from one of the connection modes to the interrupt (INT) connection mode. In the interrupt (INT) connection mode, the mains terminal 10, the electric vehicle 20, and the power user terminal 40 are connected to each other via the smart switch 30. The switch 30 will correspondingly interrupt the signal connection between them. That is, when the voltage, current or power in the first signal exceeds the voltage, current or power that the line between the smart switch 30 and the mains terminal 10 can withstand, the signal connection between the mains terminal 10 and the smart switch 30 will be interrupted. Similarly, when the voltage, current or power in the second signal exceeds the voltage, current or power that the line between the smart switch 30 and the electric vehicle 20 can withstand, the signal connection between the electric vehicle 20 and the smart switch 30 will be interrupted. And when the power demand signal exceeds the voltage, current or power that the line between the smart switch 30 and the power user terminal 40 can withstand, the signal connection between the power user terminal 40 and the smart switch 30 will be interrupted. Therefore, the smart switch 30 is also a power consumption detection device. Through the smart switch 30, multiple power circuits can be detected simultaneously (e.g., the power circuit between the smart switch 30 and the mains terminal 10, the power circuit between the smart switch 30 and the electric vehicle 20, or the power circuit between the smart switch 30 and the power terminal 40), to monitor each power circuit. When each power circuit exceeds its power consumption limit, the corresponding power circuit will be interrupted or disconnected. In this embodiment, the power consumption detection device can be a smart meter.

[0018] In this embodiment, when the smart switch 30 detects that the first signal is less than or equal to a lower limit (e.g., the lower limit is "0") from the mains terminal 10, the smart switch 30 switches from the mains-to-load (G2H&V) connection mode or the electric vehicle-to-grid-and-consumer (V2G&H) connection mode to the electric vehicle-to-consumer (V2H) connection mode. In the electric vehicle-to-consumer (V2H) connection mode, the electric vehicle 20 and the consumer terminal 40 establish a signal connection with each other through the smart switch 30. Furthermore, the smart switch 30 interrupts the signal connection between the mains terminal 10 and the electric vehicle 20, disconnects the mains terminal 10 and the consumer terminal 40, and disconnects the mains terminal 10 and the smart switch 30. The electric vehicle 20 then provides the second signal to the consumer terminal 40.

[0019] In this embodiment, when the smart switch 30 detects a change in the voltage or frequency of the first signal from the mains terminal 10, it switches from the mains terminal 10 to the electric vehicle to the grid and power consumption terminal (V2G&H) connection mode, which is in the grid-to-load (G2H&V) connection mode. The mains terminal 10, the electric vehicle 20, and the power consumption terminal 40 establish a signal connection through the smart switch 30, and the electric vehicle 20 transmits the voltage, current, and / or power in the second signal to the mains terminal 10 and the power consumption terminal 40. In other words, the electric vehicle 20 provides the second signal to the mains terminal 10 and the power consumption terminal 40. Specifically, when the smart switch 30 detects a drop in the voltage or frequency of the first signal from the mains power terminal 10, the smart switch 30 will switch from the grid-to-load (G2H&V) connection mode to the electric vehicle-to-grid and power-consuming terminal (V2G&H) connection mode.

[0020] In this embodiment, the smart switch 30 is in one of the following states: the connection mode between the power grid and the electric vehicle to the power consumer (G&V2H), the connection mode between the electric vehicle and the power consumer (V2H), or the connection mode between the electric vehicle and the power grid and the power consumer (V2G&H). When the smart switch 30 detects that the power information of the second signal is less than or equal to a preset battery threshold, the smart switch 30 switches from the connection mode between the power grid and the electric vehicle to the power consumer (G&V2H), the connection mode between the electric vehicle and the power consumer (V2H), or the connection mode between the electric vehicle and the power grid and the power consumer (V2G&H) to the connection mode between the power grid and the load (G2H&V), so as to stop the electric vehicle 20 from outputting the voltage, current, or power of the second signal, and the mains power terminal 10 provides the first signal to the electric vehicle 20 to charge the electric vehicle 20. In this embodiment, the preset battery threshold can be a pre-set value indicating that the electric vehicle 20 needs to be charged before leaving the factory, a value set by the smart switch 30 based on the proportion of the total battery capacity of the electric vehicle 20, or a constant value set by the smart switch 30 before leaving the factory. For example, the factory setting can be obtained to remind the user to charge if the battery capacity is lower than 20%. This constant value means that the smart switch 30 is set to 20 kWh before leaving the factory, and the above-mentioned action is executed when the battery capacity information of the second signal is less than or equal to 20 kWh.

[0021] In this embodiment, as shown in FIG2, the smart switch 30 includes a first input / output unit 31, a second input / output unit 32, a power output unit 33, a memory 34, a control unit 35, and a processor 36. The mains power terminal 10 is further connected to the first input / output unit 31, the power storage device 21 is connected to the second input / output unit 32, and the power consumption terminal 40 is connected to the power output unit 33, so that the power consumption terminal 40 receives the first signal and / or the second signal through the power output unit 33. Then, the processor 36 is connected to the memory 34 and the control unit 35, and the memory 34 pre-stores power consumption information.

[0022] The control unit 35 establishes or terminates signal connections between the first input / output unit 31, the second input / output unit 32, and the power consumption output unit 33 according to the connection modes, while the processor 36 instructs the control unit 35 to execute the connection modes based on the power consumption information. In this embodiment, the power consumption information may be peak period information, off-peak period information, and a pre-stored power signal, wherein the power consumption information further includes a pre-stored frequency.

[0023] In this embodiment, as shown in FIG2, the smart switch 30 further includes a timer 37, the processor 36 is connected to the timer 37, the timer 37 performs internal time counting and generates time information based on the count. When the smart switch 30 is in the grid-to-load (G2H&V) connection mode, after the processor 36 receives the time information from the timer 37, the processor 36 compares the time information with the peak period information in the electricity consumption information. Specifically, when the time information matches the peak period information and the electricity demand signal is less than the second signal, the processor 36 controls the control unit 35 to switch from the grid-to-load (G2H&V) connection mode to the electric vehicle-to-consumer (V2H) connection mode. Furthermore, when the time information matches the peak period information and the electricity demand signal is greater than the second signal, the processor 36 controls the control unit 35 to switch from the grid-to-load (G2H&V) connection mode or the electric vehicle-to-consumer (V2H) connection mode to the grid-to-electric vehicle-to-consumer (G&V2H) connection mode.

[0024] Furthermore, when the smart switch 30 is in the connection mode between the power grid and the electric vehicle to the power consumer (G&V2H), the connection mode between the electric vehicle and the power consumer (V2H), or the connection mode between the electric vehicle and the power grid and the power consumer (V2G&H), when the smart switch 30 determines that the time information matches the off-peak period information in the power consumption information, the processor 36 controls the control unit 35 to switch from the connection mode between the power grid and the electric vehicle to the power consumer (G&V2H), the connection mode between the electric vehicle and the power consumer (V2H), or the connection mode between the electric vehicle and the power grid and the power consumer (V2G&H) to the connection mode between the power grid and the load (G2H&V) (i.e., the mains power supply to the electric vehicle and the power consumer). Specifically, the smart switch 30 can store the power consumption information in the memory 34 before leaving the factory, or the smart switch 30 can have a built-in communication unit (not shown) to connect with external electronic devices (not shown) or servers (not shown) through the communication unit, so that when the user establishes the power consumption information through the external electronic device or server, the smart switch 30 can receive the power consumption information from the external electronic device or server.

[0025] For example, the smart switch 30 is connected in the grid-to-load (G2H&V) mode, and the peak period information in the electricity consumption data is from 4:00 PM to 10:00 PM. When the timer 37 counts to the current system time of 4:00 PM, the time information matches the peak period information. Then, the processor 36 controls the control unit 35 to switch from the grid-to-load (G2H&V) connection mode to the electric vehicle-to-consumer (V2H) connection mode. Similarly, the smart switch 30 is connected in the electric vehicle-to-consumer (V2H) connection mode, and the off-peak period information in the electricity consumption data is from 0:00 AM to 6:00 AM. When the timer 37 counts to the current system time of 0:00 AM, the time information matches the off-peak period information. Then, the processor 36 controls the control unit 35 to switch from the electric vehicle-to-consumer (V2H) connection mode to the grid-to-load (G2H&V) connection mode.

[0026] In this embodiment, as shown in FIG2, the smart switch 30 further includes a detection unit 38. When the detection unit 38 detects a decrease in the first signal, the detection unit 38 generates a detection signal and transmits it to the processor 36. When the processor 36 receives the detection signal, it acquires the first signal and compares the power consumption information based on the first signal to determine whether a change in the power grid system state has occurred, so as to switch from the connection mode of the power grid to the load (G2H&V) to the connection mode of the electric vehicle to the power consumer (V2H) or the connection mode of the electric vehicle to the power grid and the power consumer (V2G&H). Specifically, when the detection unit 38 detects that the first signal is less than the pre-stored power signal or frequency in the power consumption information, the processor 36 controls the control unit 35 to switch to the connection mode of the electric vehicle to the power grid and the power consumer (V2G&H). When the detection unit 38 detects that the first signal is less than or equal to 0, the processor 36 controls the control unit 35 to switch to the connection mode of the electric vehicle to the power consumer (V2H). In this embodiment, the detection unit 38 may be an electricity meter or a galvanometer, and the pre-stored power signal may be a voltage, a current, or a power.

[0027] In this embodiment, as shown in FIG3, the smart power supply system further includes a cloud platform 50. The cloud platform 50 and the smart switch 30 are connected via a network (such as a wired network or a wireless network) and a mode control signal is provided. When the user provides the mode control signal through the cloud platform 50, the cloud platform 50 transmits the mode control signal to the smart switch 30 via the network. Upon receiving the mode control signal, the smart switch 30 switches to one of the following modes according to the mode control signal: the grid-to-load (G2H&V) connection mode, the grid-to-electric vehicle-to-consumer (G&V2H) connection mode, the interrupt (INT) connection mode, the electric vehicle-to-consumer (V2H) connection mode, the electric vehicle-to-grid-to-consumer (V2G&H) connection mode, or the renewable energy-to-load (R2V) connection mode. Specifically, users can establish a wireless connection with the cloud platform 50 through other electronic devices (e.g., mobile devices). Users can select one of the connection modes by operating the electronic device and send a selection result to the cloud platform 50. The cloud platform 50 generates a mode control signal based on the selection result and transmits this signal to the smart switch 30. The smart switch 30 can then switch the connection mode accordingly to one of the following modes: grid-to-load (G2H&V) connection mode, grid-to-electric vehicle-to-consumer (G&V2H) connection mode, interrupt (INT) connection mode, electric vehicle-to-consumer (V2H) connection mode, electric vehicle-to-grid-to-consumer (V2G&H) connection mode, or renewable energy-to-load (R2V) connection mode. In this embodiment, the cloud platform 50 can be a server.

[0028] In this embodiment, as shown in FIG4, the smart power supply system further includes a charging pile 60. The charging pile 60 is wired or wirelessly connected to the electric vehicle 20, and is also wired or wirelessly connected to the smart switch 30. Depending on the connection mode of the power grid to load (G2H&V), the connection mode of the power grid to the electric vehicle to the power consumer (G&V2H), the interruption (INT) connection mode, the connection mode of the electric vehicle to the power consumer (V2H), or the connection mode of the electric vehicle to the power grid and the power consumer (V2G&H), the charging pile 60 receives the voltage, current, and / or power in the second signal corresponding to the operation of each connection mode. Specifically, in any connection mode, the electric vehicle 20 establishes or interrupts a signal connection with the smart switch 30 via the charging pile 60. Therefore, this embodiment will focus on describing the interaction between the charging pile 60 and the various components. When the smart switch 30 is connected to the grid-to-load (G2H&V) connection mode, the electric vehicle 20 is connected to the smart switch 30 via the charging pile 60. When the smart switch 30 detects that the sum of the power demand signal and the second signal is greater than the upper limit of the first signal, the smart switch 30 will generate the control signal and send it to the charging pile 60. The charging pile 60 will reduce or terminate the transmission of the first signal to the electric vehicle 20 according to the control signal. In the grid-to-electric vehicle-to-consumer (G&V2H) connection mode, the charging pile 60 transmits the voltage, current and / or power in the second signal from the power storage device 21 of the electric vehicle 20 to the consumer terminal 40. In the vehicle-to-power-consumer (V2H) connection mode, the charging pile 60 transmits the voltage, current, and / or power in the second signal from the power storage device 21 of the vehicle 20 to the power-consumer 40; while in the vehicle-to-grid and power-consumer (V2G&H) connection mode, the charging pile 60 transmits the voltage, current, and / or power in the second signal to both the mains power terminal 10 and the power-consumer 40. In this embodiment, when the charging pile 60 and the vehicle 20 are connected by a wireless signal, charging is performed between the charging pile 60 and the vehicle 20 using wireless charging technology.

[0029] In the above embodiments, the smart switch 30 includes a power converter, a transformer, a DC-AC converter, an inverter, a rectifier, and / or a charging control board; the charging pile 60 also includes a power converter, a transformer, a DC-AC converter, an inverter, a rectifier, and / or a charging control board.

[0030] In the above embodiments, the charging pile 60 can connect to multiple electric vehicles 20 simultaneously. Alternatively, one charging pile 60 can be configured to correspond to one electric vehicle 20.

[0031] In this embodiment, as shown in FIG5, the smart power supply system further includes an energy storage device 70, which is connected to the smart switch 30. When the smart switch 30 is in the following connection modes: grid-to-load (G2H&V), grid-to-electric vehicle-to-consumer (G&V2H), electric vehicle-to-consumer (V2H), or electric vehicle-to-grid-and-consumer (V2G&H), the energy storage device 70 establishes a signal connection with the mains terminal 10, the electric vehicle 20, and / or the consumer terminal 40 via the smart switch 30. This allows the energy storage device 70 to receive and store the first signal or provide the stored power to the mains terminal 10, the electric vehicle 20, and / or the consumer terminal 40. Thus, because the energy storage device 70 can quickly provide power, power interruption can be avoided when the smart switch 30 switches connection modes. In this embodiment, the energy storage device 70 can further provide power information. Furthermore, when the electric vehicle 20 is not connected to the smart switch 30, that is, when the electric vehicle 20 is not in the same field as the energy storage device 70, the energy storage device 70 provides power. When the electric vehicle 20 is in the field, it can be connected to the grid for power supply with the energy storage device 70.

[0032] In this embodiment, as shown in FIG6, the smart power supply system may further include a renewable energy device 80. The renewable energy device 80 is connected to the smart switch 30, and when the smart switch 30 is in the renewable energy-to-load (R2V) connection mode, the renewable energy device 80 establishes a signal connection with the mains power terminal 10, the electric vehicle 20, and / or the power user terminal 40 via the smart switch 30. The operation / connection method of the renewable energy device 80 is the same as that of the mains power terminal 10, so it will not be described again. In this embodiment, the renewable energy device may be a solar power source, a wind power source, etc.

[0033] In another embodiment, when the smart switch 30 is operating in the regenerative energy to load (R2V) connection mode, the charging pile 60 enables the electric vehicle 20 to receive the same voltage, current or power based on the regenerative energy voltage, regenerative energy current or regenerative energy power provided by the regenerative energy device 80.

[0034] In the above embodiments, the energy storage device 70 or the renewable energy device 80 can be further connected to the smart switch 30 through a power converter, transformer, DC-AC converter, inverter or rectifier, respectively.

[0035] In summary, by implementing the aforementioned intelligent power supply control path through the smart switch 30, when the mains power terminal 10 cannot supply power, the electricity price corresponding to the time period supplied by the mains power terminal 10 is relatively expensive, the power of the mains power terminal 10 is insufficient, the frequency drops, or the voltage drops, the smart switch 30 can switch the power consumption terminal 40 from receiving power from the mains power terminal 10 to receiving power demand signals from the electric vehicle 20, the energy storage device 70, and / or the renewable energy device 80. In this way, the vehicle's electric energy can be properly utilized, the construction cost and construction space can be reduced, and the grid load can be reduced.

[0036] The above embodiments are merely illustrative of the invention and are not intended to limit the invention. Any person skilled in the art can modify and alter the above embodiments without departing from the spirit and scope of the invention. Therefore, the scope of protection of this invention should be as set forth in the following claims.

[0037] 10: Mains power terminal 20: Electric vehicles 21: Electricity storage devices 30: Smart Switch 31: First Input / Output Unit 32: Second Input / Output Unit 33: Power output unit 34: Memory 35: Control Unit 36: Processor 37: Timer 38: Detection Unit 40: Power supply end 50: Cloud Platform 60: Charging station 70: Energy storage device 80: Renewable Energy Devices

Claims

1. A smart power supply system, installed on a power grid system, the smart power supply system comprising: A mains power terminal provides a first signal; An electric vehicle that provides a second signal; A power consumer generates a power demand signal; a smart switch has multiple connection modes, including a connection mode between a power grid and an electric vehicle to the power consumer, a connection mode between an electric vehicle and the power consumer, and a connection mode between an electric vehicle and both the power grid and the power consumer; wherein the electric vehicle can selectively connect to the smart switch; the smart switch determines whether the state of the power grid system has changed based on the first signal, the second signal, or the power demand signal, and if so, the smart switch switches to one of the connection modes.

2. The smart power supply system as described in claim 1, wherein, These connection modes further include a grid-to-load connection mode and an interruption connection mode. The smart switch is pre-set to the grid-to-load connection mode. In the grid-to-load connection mode, the smart switch establishes a signal connection with the mains power supply, the electric vehicle, and the power user. The smart switch transmits a first signal to the electric vehicle and the power user. When the smart switch receives the first signal, the second signal, or the power demand signal, the smart switch determines whether the state of the power grid system has changed based on the first signal, the second signal, or the power demand signal. If so, the smart switch switches from the grid-to-load connection mode to one of the other connection modes.

3. The smart power supply system as described in claim 2, wherein, In the grid-to-load connection mode, when the smart switch detects that the sum of the power demand signal and the second signal is greater than an upper limit value of the first signal, the smart switch generates a control signal to adjust the first signal transmitted to the electric vehicle.

4. The smart power supply system as described in claim 2, wherein, When the smart switch is not in the interrupted connection mode, and the smart switch detects that one of the first signal, the second signal, or the power demand signal exceeds a voltage, current, or power that the line between the smart switch and the mains power supply, the electric vehicle, or the power user can withstand, the smart switch will switch from the connection mode of the power grid to the load to the interrupted connection mode, thereby interrupting the signal connection between the mains power supply, the electric vehicle, and / or the power user.

5. The intelligent power supply system as described in claim 3, wherein, When the first signal provided by the smart switch to the electric vehicle is terminated, and the smart switch detects that the power demand signal is greater than an upper limit of the first signal, the smart switch will switch from the connection mode of the power grid to the load to the connection mode of the power grid and the electric vehicle to the power user. The smart switch will generate the control signal so that the mains power supply and the electric vehicle provide the first signal and the second signal to the power user respectively.

6. The smart power supply system as described in claim 2, wherein, In the grid-to-load connection mode, when the smart switch detects that the first signal of the mains power terminal is less than or equal to a lower limit, the smart switch will switch from the grid-to-load connection mode to the electric vehicle-to-consumer connection mode, so that the electric vehicle and the consumer can establish a signal connection between them via the smart switch.

7. The smart power supply system as described in claim 2, wherein, In the grid-to-load connection mode, when the smart switch detects the change in the first signal of the mains power terminal, the smart switch will switch from the grid-to-load connection mode to the electric vehicle-to-grid and power-consuming terminal connection mode, so that the mains power terminal, the electric vehicle and the power-consuming terminal establish a signal connection between them through the smart switch, and the mains power terminal and the power-consuming terminal receive the second signal.

8. The smart power supply system as described in any one of claims 2 to 7, wherein, The smart switch includes: a first input / output unit connected to the mains power supply; a second input / output unit connected to a power storage device; a power consumption output unit connected to the power consumption terminal; a memory pre-stores power consumption information; a control unit that establishes or terminates connections between the first input / output unit, the second input / output unit, and the power consumption output unit according to the connection modes; and a processor connected to the memory and the control unit; wherein the processor controls the control unit to execute connections corresponding to the connection modes according to the power consumption information.

9. The smart power supply system as described in claim 8, wherein, The smart switch further includes: a timer connected to the processor, which performs time counting and generates time information; wherein the processor compares the time information with peak period information in the electricity consumption information, and when the time information matches the peak period information, the processor controls the control unit to switch to the connection mode of the electric vehicle to the electricity consumption terminal or the connection mode of the power grid and the electric vehicle to the electricity consumption terminal.

10. The smart power supply system as described in claim 8, wherein, The smart switch also includes: a detection unit that generates a detection signal when it detects a decrease in the first signal; wherein, when the detection unit generates the detection signal and transmits the detection signal to the processor, when the processor receives the detection signal, it acquires the first signal and compares the electricity consumption information based on the first signal to determine whether to switch from the connection mode of the power grid to the load to the connection mode of the electric vehicle to the power consumer or the connection mode of the electric vehicle to both the power grid and the power consumer.

11. The smart power supply system as described in claim 2, wherein, The smart power supply system further includes: a cloud platform connected to the smart switch and providing a mode control signal; wherein, when the smart switch receives the mode control signal, it will switch to one of the connection modes accordingly.

12. The smart power supply system as described in claim 2, wherein, The smart power supply system also includes: a charging pile connected to the electric vehicle, and receiving the first signal or outputting the second signal according to one of the connection modes.

13. The smart power supply system as described in claim 2, wherein, The smart power supply system further includes: an energy storage device that can be selectively connected to the smart switch, and when the smart switch is in one of the following modes: grid-to-load connection mode, grid-to-electric vehicle-to-consumer connection mode, interrupted connection mode, electric vehicle-to-consumer connection mode, or electric vehicle-to-grid-to-consumer connection mode, the energy storage device establishes a connection with the mains power supply, the electric vehicle, and / or the consumer via the smart switch; wherein, when the electric vehicle is not connected to the smart switch, the energy storage device is connected to the smart switch.

14. The smart power supply system as described in claim 12, wherein, The smart power supply system also includes: a renewable energy device connected to the smart switch, and when the smart switch is in the grid-to-load connection mode, the renewable energy device establishes a connection with the mains power terminal, the electric vehicle and / or the power user terminal via the smart switch.

15. The smart power supply system as described in claim 14, wherein, These connection modes also include a renewable energy-to-load connection mode; when the smart switch is in the renewable energy-to-load connection mode, the charging pile enables the electric vehicle to receive the same voltage, current or power based on a renewable energy voltage, a renewable energy current or a renewable energy power provided by the renewable energy device.

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