Power routers and charging piles

Abstract

The embodiment of the present invention discloses an electric energy router and a charging pile. By setting a controller and a plurality of power conversion circuits in the electric energy router, each power conversion circuit converts the first AC signal transmitted by the power grid into a first DC signal to transmit to the corresponding vehicle power supply for charging. The controller detects the first DC signal provided by each power conversion circuit to determine the current charging power. If the current charging power is greater than the power threshold and a reverse power supply signal is received, the controller controls the power conversion circuit to convert the second DC signal provided by the corresponding vehicle power supply into a second AC signal to transmit to the power grid. In this way, electric energy can be intelligently distributed to achieve effective peak regulation of the power grid while charging the vehicle, with high flexibility and applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of power electronic equipment, and in particular to a power router and a charging pile. Background Art

[0002] With the continuous development of new energy technology and the increasingly prominent problems of environmental pollution and energy consumption caused by traditional fuel vehicles, in order to save energy and protect the environment, new energy vehicles (such as electric vehicles, etc.) have gradually become the mainstream mode of daily travel for people. In the process of popularization of new energy vehicles, how to charge new energy vehicles has become an urgent problem to be solved.

[0003] In the prior art, new energy vehicles usually need to be charged using charging piles so that new energy vehicles can be reused. Specifically, the charging piles can be fixed to the ground or walls and installed in public areas (such as public buildings, shopping malls, public parking lots, etc.), residential parking lots or charging stations. The input end of the charging pile is connected to the AC power grid, and the output end is connected to the new energy vehicle. The charging pile obtains electrical energy from the AC power grid, converts the AC power into DC power, and then charges the electric vehicle.

[0004] On the one hand, if there is a power shortage in the power grid (for example, the current power supply of the power grid cannot meet the total charging capacity required by each charging pile), the charging piles in the prior art cannot flexibly distribute electricity, and it is easy for the charging piles to stop charging new energy vehicles, resulting in greater limitations. On the other hand, during peak hours of electricity consumption (for example, the off-get off work time period such as 5-6 pm), a large number of new energy vehicles are connected to the power grid through the charging piles in the prior art, resulting in a large peak-to-valley difference in the power grid load, which has an adverse impact on the safety of the power grid. Summary of the invention

[0005] In view of this, an object of an embodiment of the present invention is to provide a power router and a charging pile, which can intelligently distribute electric energy to achieve effective peak load regulation of the power grid while charging vehicles, and have high flexibility and applicability.

[0006] In a first aspect, an embodiment of the present invention provides a power router, the power router comprising:

[0007] Controller;

[0008] A plurality of power conversion circuits connected to the controller, each of the power conversion circuits being used to convert a first alternating current signal transmitted by a power grid into a first direct current signal, so as to transmit the first direct current signal to a corresponding vehicle-mounted power supply for charging;

[0009] In which, the controller is used to detect each of the first DC signals to determine the current charging power. In response to the current charging power being greater than the power threshold and receiving a reverse power supply signal, the controller controls the power conversion circuit to convert the second DC signal provided by the corresponding vehicle power supply into a second AC signal for transmission to the power grid.

[0010] In some embodiments, the power router further includes a plurality of bidirectional power supply interfaces, each of the power conversion circuits is connected to a corresponding bidirectional power supply interface, and each of the power conversion circuits includes:

[0011] The inverter circuit is used to convert the first AC power signal into the first DC power signal so as to transmit it to the corresponding vehicle power supply for charging through the corresponding bidirectional power supply interface, or to convert the second DC power signal transmitted by the corresponding bidirectional power supply interface into the second AC power signal. The controller is also used to detect the first DC power signal provided by each inverter circuit to determine the current charging power.

[0012] In some embodiments, the controller is also used to control the inverter circuit to output a first DC signal with a predetermined power in response to the current charging power being greater than the power threshold and no reverse power supply signal being received, so that the current charging power is less than or equal to the power threshold.

[0013] In some embodiments, each of the power conversion circuits further comprises:

[0014] A driving circuit connected to the inverter circuit and the controller;

[0015] Wherein, the controller is also used to control the drive circuit to output a drive signal, so that the inverter circuit converts the first AC signal into a corresponding first DC signal with the predetermined power, or so that the inverter circuit converts the second DC signal into the second AC signal.

[0016] In some embodiments, the power router further comprises:

[0017] A transformer is connected to each of the inverter circuits and the power grid, and is used to regulate the voltage of the first AC power signal provided by the power grid so as to transmit it to each of the inverter circuits respectively, or to regulate the voltage of the second AC power signal provided by the inverter circuit so as to transmit it to the power grid.

[0018] In some embodiments, the power router further includes a plurality of detection circuits, each of which is connected to the controller and a corresponding power conversion circuit, and each of which includes:

[0019] A current detection circuit, used for detecting current information of a first direct current signal output by a corresponding inverter circuit, so as to transmit the current information to a signal amplification circuit;

[0020] A voltage detection circuit, used for detecting voltage information of the first DC signal output by the corresponding inverter circuit, so as to transmit the voltage information to the signal amplification circuit;

[0021] A signal amplifying circuit, used for amplifying the current information and the voltage information to transmit them to the controller;

[0022] The controller is further used to determine the current charging power according to the amplified current information and voltage information.

[0023] In some embodiments, the plurality of power conversion circuits and the transformer are disposed on a first circuit board, and the controller and the plurality of detection circuits are disposed on a second circuit board.

[0024] In some embodiments, the inverter circuit is a half-bridge circuit.

[0025] In some embodiments, the controller is further used to obtain power supply information for transmission to the server, and the power supply information includes at least one of the following information:

[0026] the power supply duration of each of the bidirectional power supply interfaces;

[0027] amplifying the voltage information;

[0028] the current information after amplification; or

[0029] The current charging power.

[0030] In a second aspect, an embodiment of the present invention provides a charging pile, the charging pile comprising:

[0031] monitor;

[0032] A plurality of charging ports, each of which is used to transmit a first DC power signal provided by the power router to a corresponding vehicle power supply for charging, or to transmit a second DC power signal provided by the corresponding vehicle power supply to the power router;

[0033] An antenna, used to transmit the power supply information of the power router to a server;

[0034] The power router as described in the first aspect.

[0035] In the embodiment of the present invention, a controller and multiple power conversion circuits are set in the power router, and each power conversion circuit converts the first AC signal transmitted by the power grid into a first DC signal to transmit to the corresponding vehicle power supply for charging. The controller detects the first DC signal provided by each power conversion circuit to determine the current charging power. If the current charging power is greater than the power threshold and a reverse power supply signal is received, the controller controls the power conversion circuit to convert the second DC signal provided by the corresponding vehicle power supply into a second AC signal to transmit to the power grid. In this way, electric energy can be intelligently distributed to achieve effective peak load regulation of the power grid while charging the vehicle, with high flexibility and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0037] Figure 1 is a circuit diagram of a power router according to an embodiment of the present invention;

[0038] Figure 2 is an equivalent circuit diagram of a power router according to an embodiment of the present invention;

[0039] Figure 3 is a circuit diagram of a detection circuit according to an embodiment of the present invention;

[0040] Figure 4 is a side view of a power router according to an embodiment of the present invention;

[0041] Figure 5 is an exploded side view of a power router according to an embodiment of the present invention;

[0042] Figure 6 is a schematic diagram of a charging pile according to an embodiment of the present invention;

[0043] Figure 7 is a schematic diagram of a charging system according to an embodiment of the present invention;

[0044] Figure 8 It is a schematic diagram of a charging pile for charging a vehicle according to an embodiment of the present invention.

[0045] Description of reference numerals:

[0046] 100-charging pile;

[0047] 101 - antenna; 102 - display; 14a, 14b, 14c - charging port;

[0048] 10-Power router;

[0049] 10a-first housing; 10a1-connecting column;

[0050] 10b-second housing; 10b1-first through hole; 10b2-second through hole; 10b3-connecting portion; 10b4-hollow portion; 10b5-second connecting hole; 10b6-heat dissipation hole;

[0051] 1- first circuit board;

[0052] 11, 12, 13, 1n-power conversion circuit; 11a, 12a, 13a, 1na-inverter circuit; 11b, 12b, 13b, 1nb-drive circuit; 1A1-transformer;

[0053] 2-second circuit board; 2'-first connection hole; 21-controller; 22, 23, 24, 25-detection circuit; 2a, 2b, 2c, 2n-bidirectional power supply interface;

[0054] 221-current detection circuit; 222-voltage detection circuit; 223-signal amplification circuit;

[0055] 3a-connector; 4a, 4b-heat dissipation module; 5-heat dissipation element;

[0056] 200-server; 3-grid; 400-photovoltaic system;

[0057] A, B, C - vehicles; 14a1, 14b1, 14c1 - dedicated charging cables. DETAILED DESCRIPTION

[0058] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. It is possible for a person skilled in the art to fully understand the present invention without the description of these details. In order to avoid confusing the essence of the present invention, known methods, processes, flows, components and circuits are not described in detail.

[0059] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0060] At the same time, it should be understood that in the following description, "circuit" refers to a conductive circuit composed of at least one element or subcircuit through electrical connection or electromagnetic connection. When an element or circuit is said to be "connected to" another element or an element / circuit is said to be "connected between" two nodes, it can be directly coupled or connected to another element or there can be an intermediate element, and the connection between the elements can be physical, logical, or a combination thereof. On the contrary, when an element is said to be "directly coupled to" or "directly connected to" another element, it means that there is no intermediate element between the two.

[0061] Unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] For ease of explanation, spatially relative terms such as "inside", "outside", "below", "below", "lower", "above", "upper", etc. are used herein to describe the relationship of one element or feature illustrated in the figures to another element or feature. It will be understood that spatially relative terms may be intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figure is turned over, an element described as being "below" or "below" other elements or features will then be positioned as being "above" the other elements or features. Thus, the example term "below" can include both the orientations of above and below. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0063] Unless the context clearly requires otherwise, the words "include", "comprising" and similar words throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0064] In the description of this application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0065] The solutions described in this specification and in the examples, if they involve the processing of personal information, will be processed on the premise of having a legal basis (such as obtaining the consent of the subject of personal information, or being necessary for the performance of a contract, etc.), and will only be processed within the scope of regulations or agreements. If a user refuses to process personal information other than the necessary information for basic functions, it will not affect the user's use of basic functions.

[0066] In the following description, the scenario in which the power router and the charging pile are used to perform wired charging for the on-board power supply of an electric vehicle is used as an example for explanation. Specifically, the power router can convert the AC power transmitted by the power grid into DC power to realize wired charging for the on-board power supply of the electric vehicle. Among them, the power grid represents the whole composed of substations (also known as Substations) of different voltages in the power system and transmission and distribution lines. The power grid usually has functions such as transmitting electric energy, distributing electric energy and changing voltage. It should be understood that the power router and charging pile involved in the embodiments of the present invention can be designed to be used in various scenarios that require charging, for example, it can also be used for wired charging of electric bicycles and mobile power supplies waiting for charging devices, and for example, it can also be used for wireless charging of smart phones and tablets waiting for charging devices.

[0067] Figure 1 FIG. 1 is a circuit diagram of a power router according to an embodiment of the present invention. Figure 1 As shown, the power router of this embodiment includes multiple power conversion circuits and a controller 21.

[0068] In this embodiment, the plurality of power conversion circuits include 11, 12, 13 and 1n. The power conversion circuits 11, 12, 13 and 1n are connected to the controller 21 and the corresponding vehicle power supply. Specifically, the power conversion circuit 11 is connected to the vehicle power supply 1a. The power conversion circuit 12 is connected to the vehicle power supply 1b. The power conversion circuit 13 is connected to the vehicle power supply 1c. The power conversion circuit 1n is connected to the vehicle power supply 1n'.

[0069] In this embodiment, the example of a power router including multiple power conversion circuits 11, 12, 13 and 1n is used for explanation. It should be understood that the number of power conversion circuits included in the power router can be one or more. The number of power conversion circuits can be set according to user needs, for example, if a charging station has eight charging positions, the power router can be provided with eight power conversion circuits. Among them, the charging position represents the geographical area where the electric vehicle can be parked and charged.

[0070] In this embodiment, each power conversion circuit can convert the first AC signal transmitted by the power grid into a first DC signal, and transmit it to the corresponding vehicle power supply for charging. For example, the power conversion circuit 11 converts the first AC signal transmitted by the power grid into a first DC signal, and transmits it to the vehicle power supply 1a for charging.

[0071] In this embodiment, since the charging piles in the prior art cannot flexibly distribute electric energy in the case of power shortage in the power grid, the existing charging piles stop charging new energy vehicles, and during the peak period of electricity consumption, a large number of new energy vehicles are connected to the power grid through the charging piles in the prior art, resulting in a large peak-to-valley difference in the power grid load, which has an adverse impact on the safety of the power grid. In response to this situation, this embodiment uses the controller 21 to perform real-time detection of the first DC signal transmitted by each power conversion circuit to determine the current charging power. Then the controller 21 compares the current charging power with the power threshold. If the current charging power is greater than the power threshold and the controller 21 receives a reverse power supply signal, the controller 21 controls the power conversion circuit corresponding to the reverse power supply signal to convert the second DC signal provided by the corresponding on-board power supply into a second AC signal for transmission to the power grid. In this way, electric energy can be intelligently distributed to achieve effective peak regulation of the power grid while charging the vehicle, with high flexibility and applicability. Specifically, the equivalent circuit diagram of the power router can be referred to Figure 2 .

[0072] Figure 2 is an equivalent circuit diagram of the power router of the embodiment of the present invention. Figure 2 As shown, the power router of this embodiment includes multiple power conversion circuits, a transformer 1A1, a controller 21, multiple detection circuits and multiple bidirectional power supply interfaces. Among them, the multiple detection circuits include 22, 23, 24 and 25. The multiple bidirectional power supply interfaces include 2a, 2b, 2c and 2n.

[0073] In this embodiment, it is considered that the power conversion circuit may be affected by factors such as the environment (such as temperature, humidity and dust), aging (that is, electronic components that run for a long time are prone to aging), voltage fluctuations (such as voltage fluctuations of the alternating current provided by the power grid), etc., which may cause the power conversion circuit to fail. In view of this situation, in this embodiment, multiple power conversion circuits and transformers 1A1 are arranged on the first circuit board 1. And the controller 21, multiple detection circuits and multiple bidirectional power supply interfaces are arranged on the second circuit board 2. When a power conversion circuit fails, the first circuit board 1 can be replaced for maintenance. As a result, the power router is easy to maintain and has high applicability.

[0074] Optionally, a plurality of detachable first sub-circuit boards may be arranged on the first circuit board 1, and each power conversion circuit may be arranged on a corresponding first sub-circuit board. When a power conversion circuit fails, the corresponding first sub-circuit board may be replaced for maintenance. Thus, the power router is easy to maintain and has high applicability. Among them, the first circuit board 1, each first sub-circuit board and the second circuit board 2 may be implemented by a PCB (Printed Circuit Board).

[0075] Optionally, the first circuit board 1 and the second circuit board 2 can be connected by wires, flat cables, flexible printed circuit boards (FPC), multiple PCB connectors, etc. The PCB connector is, for example, a pin connector (also known as a Header) of model MR30PB-FB.

[0076] In this embodiment, multiple power conversion circuits and transformer 1A1 are arranged on the first circuit board 1, and the controller 21, multiple detection circuits and multiple bidirectional power supply interfaces are arranged on the second circuit board 2. It should be understood that multiple power conversion circuits, transformer 1A1, controller 21, multiple detection circuits and multiple bidirectional power supply interfaces in this embodiment can also be arranged on one circuit board, thereby saving space of the power router, reducing the volume of the power router, and improving the applicability of the power router.

[0077] In this embodiment, each power conversion circuit includes an inverter circuit and a drive circuit, and the controller 21 is connected to the corresponding inverter circuit through the drive circuit in each power conversion circuit. Among them, the drive circuit can be connected to the corresponding inverter circuit through the above-mentioned PCB connector and other methods. Specifically, the power conversion circuit 11 includes an inverter circuit 11a and a drive circuit 11b. The controller 21 is connected to the drive circuit 11b. The drive circuit 11b is connected between the controller 21 and the inverter circuit 11a.

[0078] The power conversion circuit 12 includes an inverter circuit 12a and a drive circuit 12b. The controller 21 is connected to the drive circuit 12b. The drive circuit 12b is connected between the controller 21 and the inverter circuit 12a.

[0079] The power conversion circuit 13 includes an inverter circuit 13a and a drive circuit 13b. The controller 21 is connected to the drive circuit 13b. The drive circuit 13b is connected between the controller 21 and the inverter circuit 13a.

[0080] The power conversion circuit 1n includes an inverter circuit 1na and a drive circuit 1nb. The controller 21 is connected to the drive circuit 1nb. The drive circuit 1nb is connected between the controller 21 and the inverter circuit 1na.

[0081] In this embodiment, the number of power conversion circuits, the number of detection circuits, and the number of bidirectional power supply interfaces included in the power router are the same. That is, each power conversion circuit is correspondingly provided with a detection circuit and a bidirectional power supply interface, and the inverter circuit in each power conversion circuit is connected to the corresponding detection circuit and bidirectional power supply interface.

[0082] Optionally, each power conversion circuit has a preset position relationship with the corresponding bidirectional power supply interface and detection circuit. For example, the power conversion circuit 11 of the first circuit board 1 has a preset position relationship with the detection circuit 22 and the bidirectional power supply interface 2a of the second circuit board 2. In this way, the wiring difficulty can be reduced and the applicability of the power router can be improved.

[0083] In this embodiment, the inverter circuit in the power conversion circuit is connected to the corresponding detection circuit, the bidirectional power supply interface and the transformer 1A1. The controller 21 is connected to the inverter circuit in the corresponding power conversion circuit through each detection circuit. Specifically, the inverter circuit 11a is connected to the bidirectional power supply interface 2a, the detection circuit 22 and the transformer 1A1. The controller 21 is connected to the inverter circuit 11a through the detection circuit 22.

[0084] The inverter circuit 12a is connected to the bidirectional power supply interface 2b, the detection circuit 23 and the transformer 1A1. The controller 21 is connected to the inverter circuit 12a via the detection circuit 23.

[0085] The inverter circuit 13a is connected to the bidirectional power supply interface 2c, the detection circuit 24 and the transformer 1A1. The controller 21 is connected to the inverter circuit 13a via the detection circuit 24.

[0086] The inverter circuit 1na is connected to the bidirectional power supply interface 2n, the detection circuit 25 and the transformer 1A1. The controller 21 is connected to the inverter circuit 1na via the detection circuit 25.

[0087] In this embodiment, the transformer 1A1 is connected to the power grid 3 and the inverter circuits in each power conversion circuit.

[0088] In this embodiment, each power conversion circuit, that is, the power conversion circuits 11, 12, 13 and 1n, have the same circuit structure. Each detection circuit, that is, the detection circuits 22, 23, 24 and 25, have the same circuit structure. In the following description, the power conversion circuit 11, the detection circuit 22 and the bidirectional power supply interface 2a are taken as examples for explanation.

[0089] Optionally, each bidirectional power supply interface is connected to a corresponding charging interface, and the charging interface can charge the on-board power supply of the electric vehicle through a charging gun or a dedicated charging cable, etc. The charging interface is adapted to the charging gun or the dedicated charging cable, etc.

[0090] In this embodiment, each bidirectional power supply interface can be implemented by a dedicated power supply interface. For example, each bidirectional power supply interface can be designed according to the charging power required by the device to be charged (such as an electric car, etc.). Among them, each bidirectional power supply interface can transmit the direct current provided by the corresponding inverter circuit to the corresponding vehicle power supply for charging. Each bidirectional power supply interface can also transmit the direct current provided by the vehicle power supply to the corresponding inverter circuit.

[0091] In this embodiment, the controller 21 may be an electronic device having functions of data processing, data storage, data transmission, etc. The controller 21 may be implemented by an MCU (Microcontroller Unit), for example, an MCU of the model STM32H7.

[0092] Optionally, the controller 21 may also be implemented by a PLC (Programmable Logic Controller), an FPGA (Field-Programmable Gate Array), a DSP (Digital Signal Processor) or an ASIC (Application Specific Integrated Circuit).

[0093] In this embodiment, each drive circuit can be implemented by a microelectronic component, that is, an Integrated Circuit Chip (IC). For example, a chip with a model of 2EDF7235K. Among them, the controller 21 can send a control signal to a certain drive circuit, so that the drive circuit outputs a drive signal corresponding to the control signal. Then the drive circuit transmits the drive signal to the corresponding inverter circuit, so that the inverter circuit can convert the first AC signal transmitted by the transformer 1A1 into a first DC signal, or, so that the inverter circuit can convert the second DC signal transmitted by the corresponding vehicle power supply through the corresponding bidirectional power supply interface into a second AC signal. Among them, the control signal is, for example, a PWM signal (Pulse width modulation). The drive signal includes a high level signal and a low level signal.

[0094] In this embodiment, the inverter circuit can be implemented by a half-bridge inverter circuit or a full-bridge inverter circuit.

[0095] Optionally, each inverter circuit may include a plurality of high-frequency switching elements, which may be implemented by transistors, such as MOSFET (Metal Oxide Semiconductor Field-Effect Transistor), IGBT (Insulated Gate Bipolar Transistor), etc. Among them, the high-frequency switching element may be controlled to be turned on by a high-level signal of a driving signal, or may be controlled to be turned off by a low-level signal of a driving signal. In other words, the controller 21 may drive each high-frequency switching element in the corresponding inverter circuit to be in different switching states at a high frequency through a driving circuit, that is, continuously switching the connection and disconnection of the circuit, so that the inverter circuit may convert a first AC signal into a first DC signal, or, alternatively, the inverter circuit may convert a second DC signal into a second AC signal.

[0096] In this embodiment, the controller 21 can control the drive circuit to output a drive signal to drive the high-frequency switch element in the corresponding inverter circuit to be in a switching state of different frequencies, so that the inverter circuit can generate direct current or alternating current with different electrical parameters such as power values ​​and voltage values. In other words, the controller 21 can control the power router to charge the electric vehicle.

[0097] Optionally, each inverter circuit may further include an input filter circuit and an output filter circuit. The input filter circuit and the output filter circuit may be implemented by components such as capacitors, resistors, and diodes. The input filter circuit may filter the first AC signal transmitted by the transformer 1A1 to remove possible noise and interference, and then convert the filtered first AC signal into a first DC signal through a high-frequency switching element. The input filter circuit may also filter the second DC signal transmitted by the corresponding vehicle power supply through the corresponding bidirectional power supply interface, and then convert the filtered second DC signal into a second AC signal through a high-frequency switching element. Correspondingly, the output filter circuit may filter the first DC signal, and then transmit the filtered first DC signal to the corresponding vehicle power supply through the corresponding bidirectional power supply interface for charging. The output filter circuit may also filter the second AC signal, and then transmit the filtered second AC signal to the power grid 3 through the transformer 1A1.

[0098] In this embodiment, the transformer 1A1 can be implemented by a planar transformer (PT), which is used to perform voltage regulation on the first AC signal to be regulated that is transmitted by the power grid 3, and then transmit the regulated first AC signal to the inverter circuit in each power conversion circuit. Alternatively, the transformer 1A1 can perform voltage regulation on the second AC signal transmitted by the inverter circuit in the power conversion circuit, and then transmit the regulated second AC signal to the power grid 3 for peak regulation.

[0099] Optionally, the transformer 1A1 may include a primary winding and a secondary winding, and the primary winding and the secondary winding have a predetermined ratio to realize a first AC signal to be voltage-regulated transmitted by the power grid 3, or to perform a step-up or step-down operation on a second AC signal transmitted by an inverter circuit in a power conversion circuit to realize a voltage regulation function. Furthermore, the transformer 1A1 may also include a magnetic core, which may be arranged between the primary winding and the secondary winding, so as to improve the transmission efficiency and stability of electric energy between the primary winding and the secondary winding. The model of the magnetic core is, for example, Ferroxcube's E58 / 11 / 38 and PLT58 / 38 / 4.

[0100] Optionally, the primary winding and the secondary winding in the transformer 1A1 can be wound using a multi-layer PCB circuit board, and then each layer of the PCB circuit board is connected to the corresponding inverter circuit. In other words, the transformer 1A1 can provide a first AC signal with the same voltage value to each inverter circuit. The transformer 1A1 can also provide a first AC signal with a different voltage value to each inverter circuit.

[0101] In this embodiment, the controller 21 can detect the first DC signal transmitted by each inverter circuit through each detection circuit to determine the current charging power. Each detection circuit includes a current detection circuit, a voltage detection circuit and a signal amplification circuit. In the following description, the detection circuit 22 and the inverter circuit 11a are taken as examples. The circuit diagram of the detection circuit of this embodiment can be referred to Figure 3 .

[0102] Figure 3 is a circuit diagram of a detection circuit according to an embodiment of the present invention. Figure 3 As shown, the detection circuit 22 of this embodiment includes a current detection circuit 221, a voltage detection circuit 222 and a signal amplification circuit 223. Among them, the inverter circuit 11a is connected to the current detection circuit 221 and the voltage detection circuit 222. The current detection circuit 221 is connected between the inverter circuit 11a and the signal amplification circuit 223. The voltage detection circuit 222 is connected between the inverter circuit 11a and the signal amplification circuit 223. The signal amplification circuit 223 is connected to the current detection circuit 221, the voltage detection circuit 222 and the controller 21.

[0103] In this embodiment, the current detection circuit 221, the voltage detection circuit 222 and the signal amplification circuit 223 can be implemented by different microelectronic components. The current detection circuit 221 is, for example, a current sensor of model TMCS1100A3QDR. The voltage detection circuit 222 is, for example, a voltage sensor of model ACPL-C87H-500E. The signal amplification circuit 223 is, for example, an operational amplifier of model LM258D. Among them, TMCS1100A3QDR is an electrically isolated Hall effect current sensor that can measure the current signal of DC or AC current and has high precision, excellent linearity and temperature stability. At the same time, TMCS1100A3QDR has a lower error. ACPL-C87H-500E is an optically isolated voltage sensor that can accurately measure voltage information.

[0104] Optionally, the current detection circuit 221 may also be implemented by a current sensor of model ACS780xLR, model ACS770, etc. The voltage detection circuit 222 may also be implemented by a voltage transformer, a Hall voltage sensor, etc.

[0105] Optionally, the power router may also include one or more wireless transmitting coils and receiving coils, and the wireless transmitting coils are connected to the transformer 1A1. The wireless transmitting coil is used to wirelessly charge the corresponding device to be charged, such as a mobile phone, an electric car, etc. That is to say, the peak-shaving method involved in this embodiment is also applicable to scenarios such as wireless charging. For example, the transformer 1A1 performs voltage regulation on the first AC signal provided by the power grid 3, and sends the first AC signal after voltage regulation to the electric car through the transmitting coil for wireless charging. The controller 21 detects each first DC signal and the first AC signal after voltage regulation to determine the current charging power. If the current charging power is greater than the power threshold and a reverse power supply signal is received, the controller 21 controls the power conversion circuit to convert the second DC signal provided by the corresponding on-board power supply into a second AC signal for transmission to the power grid 3, and at the same time controls the receiving coil to transmit the AC power provided by the transmitting coil of the electric car to the power grid 3 after voltage regulation by the transformer 1A1.

[0106] In this embodiment, when the inverter circuit 11a converts the first AC signal transmitted by the transformer 1A1 into a first DC signal, and then the inverter circuit 11a transmits the first DC signal to the vehicle power supply for charging through the bidirectional power supply interface 2a, the current detection circuit 221 can detect the current information of the first DC signal output by the corresponding inverter circuit 11a, and then the current detection circuit 221 transmits the current information to the signal amplification circuit 223. At the same time, the voltage detection circuit 222 can detect the voltage information of the first DC signal output by the inverter circuit 11a, and then the voltage detection circuit 222 transmits the voltage information to the signal amplification circuit 223. Further, the signal amplification circuit 223 amplifies the current information and the voltage information to obtain the amplified current information and voltage information. Then the signal amplification circuit 223 transmits the amplified current information and voltage information to the controller 21, and the controller 21 can determine the power information of the first DC signal output by the inverter circuit 11a according to the amplified current information and voltage information. Similarly, the controller 21 can determine the power information corresponding to the first DC power signals output by the inverter circuits 12a, 13a and 1na respectively through the detection circuits 23, 24 and 25. Then, the controller 21 can determine the current charging power according to the power information corresponding to the first DC power signals output by each inverter circuit.

[0107] In this embodiment, the controller 21 can compare the current charging power with the power threshold, so as to determine whether to convert the second DC signal provided by the on-board power supply of some electric vehicles into a second AC signal to transmit it to the power grid 3 for peak regulation. If the current charging power is less than or equal to the power threshold, it indicates that the total power value of the electric energy router charging each electric vehicle at the current moment is less than or equal to the power threshold. If the current charging power is greater than the power threshold, it indicates that the total power value of the electric energy router charging each electric vehicle at the current moment is greater than the power threshold, indicating that the electric energy router may have obtained electric energy exceeding the power threshold from the power grid 3, which may cause the load of the power grid 3 to increase, thereby affecting the stability and safety of the power grid 3. At this time, the controller 21 needs to adjust the charging power of each electric vehicle, that is, the power of the first DC signal output by each inverter circuit, so that the current charging power is reduced to less than the power threshold.

[0108] In this embodiment, the power threshold may be determined based on the distribution power, where the distribution power represents the power consumption allocated by the power grid 3 to the power router.

[0109] In an optional implementation, the power threshold is equal to the distribution power. In this case, more charging positions can be configured for the power router to enable the power router to charge more electric vehicles.

[0110] In another optional embodiment, the power threshold is less than the distribution power, and the distribution power has a predetermined difference with the power threshold. That is, considering that the current charging power may exceed the power threshold, in order to improve the safety and stability of the power grid 3, the power threshold is set to be less than the distribution power, so that when the current charging power is greater than the power threshold, the current charging power is less than the distribution power.

[0111] In this embodiment, when the current charging power is less than or equal to the power threshold, the controller 21 can provide corresponding drive signals through each drive circuit, so that each corresponding inverter circuit converts the first AC signal transmitted by the transformer 1A1 into a first DC signal to be transmitted to the corresponding vehicle power supply for charging.

[0112] In this embodiment, the controller 21 can obtain the power supply information corresponding to each electric vehicle, and then transmit the power supply information to the server for storage. The power supply information includes the power supply duration of each bidirectional power supply interface, the voltage information and current information of the amplified first DC signal provided by each inverter circuit, and the current charging power.

[0113] Optionally, the server may parse and calculate the power supply information to obtain the power consumption data (such as power consumption, current charging power, etc.) of the corresponding power router. The server then feeds back the power consumption data to the power grid 3.

[0114] Optionally, the server may compare the current charging power and distribution power of the power router to determine the power distribution request, and the power distribution request includes the current charging power of the power router. The server then sends the power distribution request to the power grid 3, so that the power grid 3 adjusts the power distribution power of the power router according to the power distribution request. For example, if the current charging power of the power router is less than or equal to the power threshold, the server sends a power distribution request to the power grid 3, so that the power grid 3 reduces the power distribution power of the power router. For another example, if the current charging power of the power router is greater than the power threshold, the server sends a power distribution request to the power grid 3, so that the power grid 3 increases the power distribution power of the power router. In this way, the power distribution power of the power router can be dynamically adjusted to meet the power demand of different power routers and improve the flexibility and applicability of power distribution.

[0115] Optionally, the power supply information also includes user information corresponding to each electric vehicle. The user information may include user identification, account number, mobile phone number, identification of the application or applet about the power router in the user's mobile phone, user recharge amount and other information. Furthermore, the power supply information also includes the total power consumption of each electric vehicle in the predetermined time period, the utilization rate of the two-way power supply interface in the predetermined time period (that is, the ratio of the number of two-way power supply interfaces powered by the vehicle power supply to the total number of two-way power supply interfaces), etc.

[0116] Optionally, when the current charging power is less than or equal to the power threshold, the server can dynamically adjust the distribution power of the corresponding power router through the power grid 3 according to the current charging power of each power router. For example, if the current charging power of the first power router is less than the allocated first distribution power, the server reduces the first distribution power of the first power router to the current charging power through the power grid 3, and determines the reserved power, which is the difference between the first distribution power and the current charging power. The server can then allocate the reserved power to other power routers whose current charging power is greater than the distribution power through the power grid 3. In this way, the server can realize dynamic adjustment of the distribution power, which has high applicability and flexibility.

[0117] Optionally, when the current charging power is less than or equal to the power threshold, each power conversion circuit has a different power level. That is, the controller 21 can control each corresponding inverter circuit to output a first DC signal with a different power value through each drive circuit. The power level represents the power value of the first DC signal.

[0118] In an optional embodiment, the power level can be determined based on the application scenario of the power router. For example, if the power router is used to charge an electric vehicle, the controller 21 can determine the power level according to the charging power required by the on-board power supply of the electric vehicle. The power levels may include 15kw, 20kw, 30kw, 40kw, 45kw, 60kw, 75kw, 80kw, 120kw, etc.

[0119] In another optional embodiment, the power level can be determined based on the user level. Among them, the controller 21 can obtain the user information of the electric vehicle to determine the corresponding user level. The user level can be determined based on the historical charging time, historical total charging time, registration time, etc. of the user using the power router. For example, the user level includes unregistered users, registered users, ordinary members, senior members, etc. The power level of senior members is greater than the power level of ordinary members, the power level of ordinary members is greater than the power level of registered users, and the power level of registered users is greater than the power level of unregistered users. Among them, when the electric vehicle is connected to the power router, the controller 21 can obtain the user information of the electric vehicle, and then the controller 21 sends the user information to the server, and the server can determine its corresponding user level based on the stored historical charging time, historical total charging time, registration time, etc. to feed back to the controller 21.

[0120] In another optional embodiment, the power level can be determined according to the power signal. Among them, the controller 21 can determine the corresponding power level according to the power value represented by the received power signal. For example, if a user wants to charge quickly, the user can send the power signal to the controller 21 through an application or applet associated with the power router in the mobile phone, and the controller 21 can control the corresponding inverter circuit through the drive circuit to provide a first DC signal with a higher power. For another example, the power router is set in a charging pile, and the charging pile is equipped with a display (such as a touch screen, etc.), then the user can input the required charging power through the display to determine the power signal.

[0121] In this embodiment, if the controller 21 detects that the current charging power is greater than the power threshold, the controller 21 needs to adjust the charging power of each electric vehicle, that is, the power of the first DC signal output by a part of the inverter circuit, and / or control another part of the inverter circuit to convert the second DC signal provided by the vehicle power supply into a second AC signal for transmission to the power grid 3, so that the current charging power is reduced to less than the power threshold.

[0122] In this embodiment, if the current charging power is greater than the power threshold, and the controller 21 receives a reverse power supply signal, the controller 21 controls the power conversion circuit corresponding to the reverse power supply signal to convert the second DC signal provided by the corresponding vehicle power supply into a second AC signal. Then the power conversion circuit transmits the second AC signal to the transformer 1A1, and the transformer 1A1 regulates the voltage of the second AC signal and transmits it to the power grid 3 for peak shaving. Among them, the controller 21 can obtain the power information of the second DC signal provided by the vehicle power supply through the corresponding detection circuit, and calculate according to the first DC signal provided by each inverter circuit to determine the current charging power. That is to say, for the current charging power greater than the power threshold, a part of the inverter circuit converts the second DC signal provided by the corresponding vehicle power supply into a second AC signal for peak shaving of the power grid 3, and another part of the inverter circuit converts the first AC signal transmitted by the transformer 1A1 into a first DC signal for charging the corresponding vehicle power supply. Thus, the controller can determine the current charging power according to the difference between the power value of each first DC signal and the power value of each second DC signal.

[0123] In an optional embodiment, after the controller 21 detects that the current charging power is greater than the power threshold, the controller 21 may send a reverse power request signal to the application or applet (such as a mobile phone, etc.) of the terminal of each electric vehicle corresponding to the user. The corresponding application or applet in the user's terminal may display the reverse power request signal through a pop-up window, a prompt bar, etc. If the user agrees to reverse power supply, that is, the controller 21 receives the reverse power supply signal sent by the user's terminal, then the inverter circuit that controls the electric vehicle charging for the user converts the second DC signal provided by the corresponding on-board power supply into a second AC signal.

[0124] Optionally, the controller 21 can obtain the power information of the on-board power supply of each electric vehicle in real time. Then the controller 21 compares the power information with the first power threshold. If the power information is greater than the first power threshold, it indicates that the on-board power supply can perform peak load regulation for the power grid 3. Then the controller 21 sends a reverse power supply request signal to the terminal of the user corresponding to the electric vehicle whose power information is greater than the first power threshold. If the power information is less than or equal to the first power threshold, the controller 21 does not need to send a reverse power supply request signal to the terminal of the user corresponding to the electric vehicle whose power information is less than or equal to the first power threshold, and continues to charge the on-board power supply of the electric vehicle. For example, the first power threshold is 70%, and the power information of the on-board power supply is 100%, indicating that the on-board power supply is fully charged. Then the controller 21 can send a reverse power supply request signal to the terminal of the user of the electric vehicle corresponding to the on-board power supply.

[0125] Furthermore, if the controller 21 detects that the power information of the on-board power supply of the electric vehicle providing the second DC power signal is less than or equal to the second power threshold, indicating that the on-board power supply cannot perform peak regulation for the power grid 3, the controller 21 controls the inverter circuit corresponding to the on-board power supply to convert the first AC power signal transmitted by the transformer 1A1 into a first DC signal to charge the on-board power supply. In other words, since the power of the on-board power supply is reduced after reverse power supply to the power grid 3, after the power information of the on-board power supply is lower than the second power threshold, the power router continues to charge the on-board power supply. Among them, the second power threshold is less than or equal to the first power threshold, and the second power threshold is, for example, 40%.

[0126] Optionally, for the on-board power supply of the electric vehicle that provides the second DC power signal, if the controller 21 receives a stop reverse power supply signal, the controller 21 controls the inverter circuit corresponding to the on-board power supply to convert the first AC power signal transmitted by the transformer 1A1 into a first DC power signal to charge the on-board power supply. For example, the user can send a stop reverse power supply signal to the controller 21 through an application or applet of the terminal, and the power router continues to charge the on-board power supply.

[0127] In another optional embodiment, the user can set in the terminal application or applet whether the corresponding on-board power supply performs reverse power supply. If the user sets that reverse power supply can be performed, the application or applet sends a reverse power supply confirmation instruction about the electric vehicle to the server. Then, during the charging process of the electric vehicle, if the server determines that the current charging power of the power router is greater than the power threshold or the distribution power, the server sends a reverse power supply signal about the electric vehicle to the controller 21, so that the controller 21 controls the corresponding power conversion circuit to convert the second DC signal provided by the on-board power supply of the electric vehicle into a second AC signal for transmission to the power grid 3 for peak regulation.

[0128] In another optional embodiment, the user can set whether the corresponding on-board power supply performs reverse power supply through the display of the charging pile. If the user sets that reverse power supply can be performed, the display sends a reverse power supply signal about the electric vehicle to the controller 21, so that the controller 21 performs peak regulation through the second DC signal provided by the on-board power supply of the electric vehicle after detecting that the current charging power is greater than the power threshold.

[0129] Optionally, for the user of the electric vehicle that provides the second DC signal, the controller 21 can calculate according to the power of the second DC signal provided by the onboard power supply of the electric vehicle, the power supply duration and other information to determine the corresponding power supply amount. The controller 21 then converts the power supply amount into the free charging duration, monetary amount and / or upgrades the user level of the user.

[0130] In this embodiment, if the current charging power is greater than the power threshold and the controller 21 does not receive the reverse power supply signal, the controller 21 controls each power conversion circuit that has not received the reverse power supply signal to output a first DC signal with the same or different predetermined power, so that the current charging power is less than or equal to the power threshold. That is to say, if the current charging power is greater than the power threshold, for the on-board power supply corresponding to the reverse power supply signal, the controller 21 controls the corresponding power conversion circuit to convert the second DC signal provided by the on-board power supply into a second AC signal for transmission to the power grid. At the same time, for the on-board power supply corresponding to the reverse power supply signal that is not received, the controller 21 adjusts the charging power of the on-board power supply through the corresponding power conversion circuit, so that the current charging power of the power router is less than or equal to the power threshold. As a result, the power router can intelligently distribute electric energy to achieve effective peak regulation of the power grid while charging the vehicle, and has high flexibility and applicability. In the following description, the output of the first DC signal with different predetermined powers by each power conversion circuit is taken as an example for explanation.

[0131] Optionally, the predetermined power is determined by the user level. For example, the user level includes unregistered users, registered users, ordinary members, senior members, etc. The predetermined power of a senior member is greater than the predetermined power of an ordinary member, the predetermined power of an ordinary member is greater than the predetermined power of a registered user, and the predetermined power of a registered user is greater than the predetermined power of an unregistered user. In other words, the higher the user level, the higher the corresponding predetermined power. It is easy to understand that the predetermined power of the first DC signal provided by the power router to a certain on-board power supply when the current charging power is greater than the power threshold is less than or equal to the charging power of the first DC signal provided to the on-board power supply when the current charging power is less than or equal to the power threshold. For example, when the current charging power is less than or equal to the power threshold, the charging power of the first DC signal provided by the power router to the on-board power supply G1 of the electric car G is G11. When the current charging power is greater than the power threshold, the predetermined power of the first DC signal provided by the power router to the on-board power supply G1 is G12. Among them, the power value represented by G12 is less than the power value represented by G11.

[0132] In an optional embodiment, the controller 21 can send the user information of the electric vehicle to the server, and then determine the user level of the electric vehicle based on the feedback information of the server. After the electric vehicle is connected to the power router, the controller 21 can obtain the user information of the electric vehicle. For example, after the bidirectional power supply interface 2a is connected to the vehicle power supply 1a through the charging gun, the controller 21 detects the charging signal (such as CC signal (Connection Confirm Signal, connection confirmation signal), CP signal (Control Press Signal, control confirmation signal), etc.). Then the controller 21 can obtain the corresponding user information through the MCU of the electric vehicle, and then charge the electric vehicle.

[0133] In another optional implementation, the user information of the electric vehicle includes a user level, and the controller 21 directly determines the corresponding user level after parsing the user information.

[0134] Optionally, the predetermined power may also be determined by a predetermined power signal. For example, if a user wants to charge quickly, the user may send the predetermined power signal to the controller 21 through an application or applet associated with the power router in the mobile phone, and the controller 21 may determine the corresponding predetermined power based on the received predetermined power signal. Then the controller 21 controls the inverter circuit corresponding to the predetermined power signal to provide a first DC signal with the predetermined power, so as to charge the on-board power supply of the user's electric vehicle.

[0135] Optionally, the predetermined power may also be determined by the controller 21 according to a power threshold. That is, each power conversion circuit is adjusted to output a first DC signal having a corresponding predetermined power, so that the current charging power of the power router is less than or equal to the power threshold.

[0136] In this embodiment, the power router also includes a photovoltaic interface. The transformer 1A1 of the power router can also be connected to an external photovoltaic system (Photovoltaic Generation System, PGS) through a photovoltaic interface. Among them, the photovoltaic system is, for example, an independent photovoltaic power generation system (also known as a Stand alone PV System), a grid-connected photovoltaic power generation system (also known as a Gridconnected PV System), etc. Specifically, the photovoltaic system can provide AC power to the power router, and the power router regulates the AC power through the transformer 1A1 to transmit it to the inverter circuit of each power conversion circuit, and then the inverter circuit converts the AC power after the voltage regulation into a first DC signal to power the vehicle power supply. Therefore, when the current charging power is greater than the power threshold, the photovoltaic system can charge part of the vehicle power supply, which can further reduce the peak power consumption of the power grid 3. Among them, the controller 21 can calculate according to the power of each first DC signal converted from the first AC signal provided by the power grid 3, the power of each first DC signal converted from the AC power provided by the photovoltaic system, and the power of the second DC signal provided by the vehicle power supply to determine the current charging power.

[0137] Optionally, the power router also includes a power supply circuit, which can be arranged on the second circuit board 2. Specifically, the power supply circuit is connected to a backup power supply (such as a battery, etc.), and at the same time, the power supply circuit is connected to various components such as the controller 21 in the power router. The backup power supply can supply power to various components in the power router through the power supply circuit when the power is off, so that the controller 21 transmits the power supply information to the server. Among them, the power supply circuit can be implemented by a power management chip of model LM5010MH_NOPB, etc. Further, the side view and exploded view of the power router can be referred to respectively. Figure 4 and Figure 5 .

[0138] Figure 4 and Figure 5 They are respectively a side view and an exploded view of the power router according to an embodiment of the present invention. Figure 4 and Figure 5As shown, the power router 10 of this embodiment includes a first housing 10a, a second housing 10b, a first circuit board 1, a second circuit board 2, a plurality of connectors 3a, a plurality of heat dissipation modules 4a and 4b, and a heat dissipation member 5. Among them, the first housing 10a includes a plurality of connecting columns 10a1. The second circuit board 2 includes a plurality of first connecting holes 2'. The second housing 10b includes a first through hole 10b1, a second through hole 10b2, a plurality of connecting portions 10b3, a plurality of hollow portions 10b4, a plurality of second connecting holes 10b5, and a heat dissipation hole 10b6.

[0139] In this embodiment, the plurality of connecting columns 10a1 of the first shell 10a and the plurality of second connecting holes 10b5 of the second shell 10b are arranged correspondingly, so that the first shell 10a and the second shell 10b can be fixed by screws, bolts, rivets, etc.

[0140] In this embodiment, the plurality of first connection holes 2' of the second circuit board 2 are arranged correspondingly to the plurality of connection parts 10b3 of the second shell 10b, so that the second circuit board 2 can be arranged in the second shell 10b by screws, bolts, riveting, etc.

[0141] In this embodiment, the second circuit board 2 is connected to the first circuit board 1 through a plurality of connectors 3a, so that the first circuit board 1 is fixed on the second circuit board 2. The connector 3a is, for example, a pin connector (ie, Header) of model MR30PB-FB.

[0142] In this embodiment, the heat sink 5 is disposed between the first circuit board 1 and the first housing 10a. The heat sink 5 can be fixed to the side of the first circuit board 1 facing the first housing 10a by screws, bolts, rivets, etc. Further, the heat sink 5 includes a plurality of heat sinks arranged at intervals, which can improve the heat dissipation efficiency.

[0143] In this embodiment, the heat dissipation module 4a is adapted to the first through hole 10b1, and the heat dissipation module 4a can be fixed to the first through hole 10b1 by means of screws, bolts, etc. Correspondingly, the heat dissipation module 4b is adapted to the second through hole 10b2, and the heat dissipation module 4b can be fixed to the second through hole 10b2 by means of screws, bolts, etc. The heat dissipation modules 4a and 4b can include components such as fans for dissipating heat for the power router 10.

[0144] In this embodiment, the heat dissipation hole 10 b 6 includes a plurality of sub-heat dissipation holes arranged at intervals, and is used to dissipate heat for the power router 10 .

[0145] In this embodiment, the plurality of hollow portions 10b4 in the second housing 10b are adapted to the plurality of bidirectional power supply interfaces provided in the second circuit board 2, so that each bidirectional power supply interface can pass through the corresponding hollow portion and connect to the charging interface corresponding to the charging pile. Figure 6 .

[0146] Figure 6 Schematic diagram of a charging pile according to an embodiment of the present invention. Figure 6 As shown, the charging pile 100 of this embodiment includes an antenna 101 , a display 102 , a plurality of charging ports 14 a , 14 b and 14 c , and a power router 10 .

[0147] In this embodiment, the charging ports 14a, 14b and 14c are respectively connected to the bidirectional power supply interfaces 2a, 2b and 2c in the power router 10. At the same time, the charging ports 14a, 14b and 14c can be connected to the on-board power supply of the corresponding electric vehicle through a charging gun or a dedicated charging line to charge the corresponding electric vehicle.

[0148] In this embodiment, the display 102 is connected to the controller 21 in the power router 10 .

[0149] Optionally, the user can interact with the display 102 to log in, register, query the user level, recharge a predetermined amount, input the required charging power, set whether to perform reverse power supply, and other functions.

[0150] Optionally, the charging pile 100 further includes a backup power supply. The backup power supply is connected to the power supply circuit in the power router 10, and is used to supply power to each component in the power router through the power supply circuit when the power is off, so that the controller 21 transmits the power supply information to the server.

[0151] In this embodiment, the antenna 101 is connected to the controller 21 in the power router 10. The controller 21 can transmit the power supply information of the power router to the server through the antenna 101.

[0152] Optionally, the power router 10 may also be provided with a communication module, which is connected to the controller 21 and the antenna 101. The controller 21 transmits the power supply information to the server through the communication module and the antenna 101. Figure 7 .

[0153] Figure 7 Schematic diagram of a charging system according to an embodiment of the present invention. Figure 7As shown, the charging system of this embodiment includes a charging pile 100, a server 200 and a power grid 3. Among them, the power grid 3 is connected to the transformer 1A1 of the power router 10 in the charging pile 100. The controller 21 in the power router 10 in the charging pile 100 can be connected to the server 200 through the antenna 101. The server 200 is connected to the power grid 3.

[0154] In this embodiment, the server 200 can communicate with the charging pile 100 and the power grid 3 through any communication mechanism / communication standard network to achieve information interaction. Specifically, the network may include a wireless network, a wired network, or a combination of a wireless network and a wired network. The wireless network includes, but is not limited to: a long term evolution (LTE) system, a 5G mobile communication network technology (5th-Generation, 5G) system, a global system for mobile communication (Global System for Mobile Communication, GSM), Bluetooth (Bluetooth, BT), Wireless Fidelity (Wireless Fidelity, Wi-Fi), Radio Frequency Identification (Radio Frequency Identification, RFID) technology, near field communication (near field communication, NFC) technology, Code Division Multiple Access (Code Division Multiple Access, CDMA) network, wideband code division multiple access (wideband code division multiple access, WCDMA) network, long range wireless communication (Lora, Long Range) technology or Zigbee protocol (Zigbee) in any one or combination. The wired network includes but is not limited to: CAN (Controller Area Network), LIN (Local Interconnect Network), RS-485, UART (Universal Asynchronous Receiver / Transmitter) and other bus interfaces and the like.

[0155] In this embodiment, the charging pile 100 can convert the first AC signal transmitted by the power grid 3 into a first DC signal through the power router 10, so as to transmit it to the corresponding vehicle power supply through multiple charging ports for charging. The charging pile 100 can also transmit the second DC signal provided by the corresponding vehicle power supply through the charging port to the power router 10, and the power router 10 converts the second DC signal into a second AC signal to transmit it to the power grid 3 for peak regulation. Among them, when the charging pile 100 charges the corresponding vehicle power supply through each charging port, the controller 21 of the power router 10 in the charging pile 100 can determine the power supply information, and then transmit the power supply information to the server 200 through the antenna 101 for storage.

[0156] Optionally, the charging system may further include a photovoltaic system 400 . The photovoltaic system 400 is connected to a photovoltaic interface of the power router 10 to provide AC power to the power router 10 .

[0157] For example, see Figure 2 and Figure 8 . Figure 8 FIG. 1 is a schematic diagram of a charging pile for charging a vehicle according to an embodiment of the present invention. Figure 8 As shown, the charging pile 100 includes an electric energy router. The bidirectional power supply interface 2a of the electric energy router is connected to the charging port 14a, the bidirectional power supply interface 2b is connected to the charging port 14b, and the bidirectional power supply interface 2c is connected to the charging port 14c. The charging port 14a is connected to the on-board power supply 1a of vehicle A through a dedicated charging line 14a1. The charging port 14b is connected to the on-board power supply 1b of vehicle B through a dedicated charging line 14b1. The charging port 14c is connected to the on-board power supply 1c of vehicle C through a dedicated charging line 14c1.

[0158] At the first moment, after vehicle A and vehicle B are connected to the power router in the charging pile 100, the power of the first DC signal provided by the power router to vehicle A is A1, and the power of the first DC signal provided by the power router to vehicle B is B1. At this time, the controller 21 detects that the current charging power is the sum of A1 and B1, Y1. Since the current charging power Y1 is less than the power threshold Z, the power router continues to charge vehicle A and vehicle B.

[0159] Further, at the second moment, after vehicle C is connected to the power router in the charging pile 100, the power of the first DC signal provided by the power router to vehicle C is C1. At this time, the controller 21 detects that the current charging power is the sum of A1, B1 and C1, Y2. Since the current charging power Y2 is greater than the power threshold Z, and the controller 21 detects that the power information of the vehicle power supply 1a of vehicle A is 100%, the power information of the vehicle power supply 1b of vehicle B is 90%, and the power information of the vehicle power supply 1c of vehicle C is 15%. Since the power information of the vehicle power supply 1a and the vehicle power supply 1b are both greater than the first power threshold of 70%. After the controller 21 sends a reverse power supply request signal to the mobile phones of the users corresponding to vehicle A and vehicle B, the user of vehicle A agrees to reverse power supply through the corresponding mobile phone application, that is, sends a reverse power supply signal to the controller 21. The user of vehicle B did not reply to the power supply signal due to being busy at work. The controller 21 controls the inverter circuit 11a in the power conversion circuit 11 corresponding to the reverse power supply signal to convert the second DC signal provided by the vehicle power supply 1a into a second AC signal for transmission to the power grid 3. At the same time, the controller 21 controls the inverter circuit 12a to reduce the charging power B1 of vehicle B to the predetermined power B11, and controls the inverter circuit 13a to reduce the charging power C1 of vehicle C to the predetermined power C11. The controller 21 detects that the current charging power Y3 is less than the power threshold Z. In this way, the electric energy can be intelligently distributed to achieve effective peak regulation of the power grid while charging the vehicle, which has high flexibility and applicability.

[0160] In the embodiment of the present invention, a controller and multiple power conversion circuits are set in the power router, and each power conversion circuit converts the first AC signal transmitted by the power grid into a first DC signal to transmit to the corresponding vehicle power supply for charging. The controller detects the first DC signal provided by each power conversion circuit to determine the current charging power. If the current charging power is greater than the power threshold and a reverse power supply signal is received, the controller controls the power conversion circuit to convert the second DC signal provided by the corresponding vehicle power supply into a second AC signal to transmit to the power grid. In this way, electric energy can be intelligently distributed to achieve effective peak load regulation of the power grid while charging the vehicle, with high flexibility and applicability.

[0161] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A power router, characterized in that: The power router comprises: Controller; A plurality of power conversion circuits connected to the controller, each of the power conversion circuits being used to convert a first alternating current signal transmitted by a power grid into a first direct current signal, so as to transmit the first direct current signal to a corresponding vehicle-mounted power supply for charging; The controller is used to detect each of the first DC power signals to determine the current charging power, and in response to the current charging power being greater than the power threshold and receiving the reverse power supply signal, control the power conversion circuit to convert the second DC power signal provided by the corresponding on-board power supply into a second AC power signal for transmission to the power grid; Wherein, the reverse power supply signal is sent by a user terminal; Wherein, in response to the electric power information of the electric vehicle being greater than the first electric power threshold, the controller sends a reverse power supply request signal to the terminal of the corresponding user; In response to the power information of the on-board power supply of the electric vehicle providing the second DC power signal being less than or equal to a second power threshold, the controller controls the power conversion circuit to charge the on-board power supply, wherein the second power threshold is less than the first power threshold; The controller calculates the power and power supply duration of the second DC signal provided by the onboard power supply of the electric vehicle to determine the power supply amount, and improves the user level of the corresponding user according to the power supply amount; In response to the current charging power being greater than the power threshold and the controller not receiving a reverse power supply signal, the controller controls each power conversion circuit that has not received the reverse power supply signal to output a first DC power signal having the same or different predetermined power, so that the current charging power is less than or equal to the power threshold, and the predetermined power is determined by the user level.

2. The power router according to claim 1, characterized in that: The power router further includes a plurality of bidirectional power supply interfaces, each of the power conversion circuits is connected to a corresponding bidirectional power supply interface, and each of the power conversion circuits includes: The inverter circuit is used to convert the first AC power signal into the first DC power signal so as to transmit it to the corresponding vehicle power supply for charging through the corresponding bidirectional power supply interface, or to convert the second DC power signal transmitted by the corresponding bidirectional power supply interface into the second AC power signal. The controller is also used to detect the first DC power signal provided by each inverter circuit to determine the current charging power.

3. The power router according to claim 2, characterized in that: The controller is also used to control the inverter circuit to output a first DC signal with a predetermined power in response to the current charging power being greater than the power threshold and not receiving a reverse power supply signal, so that the current charging power is less than or equal to the power threshold.

4. The power router according to claim 3, characterized in that: Each of the power conversion circuits further includes: A driving circuit connected to the inverter circuit and the controller; Wherein, the controller is also used to control the drive circuit to output a drive signal, so that the inverter circuit converts the first AC signal into a corresponding first DC signal with the predetermined power, or so that the inverter circuit converts the second DC signal into the second AC signal.

5. The power router according to claim 4, characterized in that: The power router also includes: A transformer is connected to each of the inverter circuits and the power grid, and is used to regulate the voltage of the first AC power signal provided by the power grid so as to transmit it to each of the inverter circuits respectively, or to regulate the voltage of the second AC power signal provided by the inverter circuit so as to transmit it to the power grid.

6. The power router according to claim 5, characterized in that: The power router further includes a plurality of detection circuits, each of which is connected to the controller and a corresponding power conversion circuit, and each of which includes: A current detection circuit, used for detecting current information of a first direct current signal output by a corresponding inverter circuit, so as to transmit the current information to a signal amplification circuit; A voltage detection circuit, used for detecting voltage information of the first DC signal output by the corresponding inverter circuit, so as to transmit the voltage information to the signal amplification circuit; A signal amplifying circuit, used for amplifying the current information and the voltage information to transmit them to the controller; The controller is further used to determine the current charging power according to the amplified current information and voltage information.

7. The power router according to claim 6, characterized in that: The multiple power conversion circuits and the transformer are arranged on a first circuit board, and the controller and the multiple detection circuits are arranged on a second circuit board.

8. The power router according to claim 2, characterized in that: The inverter circuit is a half-bridge circuit.

9. The power router according to claim 6, characterized in that: The controller is further used to obtain power supply information for transmission to the server, wherein the power supply information includes at least one of the following information: the power supply duration of each of the bidirectional power supply interfaces; amplifying the voltage information; the current information after amplification; or The current charging power.

10. A charging pile, characterized in that: The charging pile comprises: monitor; A plurality of charging ports, each of which is used to transmit a first DC power signal provided by the power router to a corresponding vehicle power supply for charging, or to transmit a second DC power signal provided by the corresponding vehicle power supply to the power router; An antenna, used to transmit the power supply information of the power router to a server; A power router as claimed in any one of claims 1 to 9.

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