Inverter, control device, and control system

Abstract

The invention provides an inverter, a control device and a control system. The inverter comprises an AC input interface, an AC output interface, a DC interface and a bidirectional inverter circuit. Wherein the AC input interface is used for being externally connected with an alternating current power supply so as to input alternating current. The AC output interface is used for being externally connected with electric equipment so as to output alternating current to the electric equipment. The DC interface is used for being externally connected with a direct-current power supply so as to input or output direct current to the direct-current power supply. And the bidirectional inverter circuit is used for converting alternating current input by the AC input interface into direct current and outputting the direct current to the DC interface, and is also used for converting the direct current input by the DC interface into alternating current and outputting the alternating current to the AC output interface. The inverter is high in versatility and use flexibility.

Description

Technical Field

[0001] The present application relates to the technical field of inverters, and in particular to an inverter, a control device and a control system. Background Art

[0002] As an important vehicle-mounted tool, the vehicle-mounted inverter converts the DC power of the vehicle power supply into AC power, which is the same as the mains power, for use by other electrical appliances. However, the inventors have found that when the power of the vehicle power supply is exhausted, it is difficult to use the AC power supply such as the mains power supply to directly charge the DC power supply such as the vehicle power supply. Summary of the invention

[0003] The main purpose of this application is to provide an inverter, a control device and a control system, which expand the inverter's function of bidirectional conversion between AC power and DC power, and can be used in scenarios such as AC power such as mains charging a DC power such as a vehicle power supply through an inverter.

[0004] In a first aspect, the present application provides an inverter, comprising:

[0005] AC input interface, used for external AC power supply to input AC power;

[0006] AC output interface, used for connecting to an external power-consuming device to output alternating current to the power-consuming device;

[0007] A DC interface, used for connecting to an external DC power supply to input or output DC power to the DC power supply;

[0008] The bidirectional inverter circuit is used to convert the alternating current input by the AC input interface into direct current and output the direct current to the DC interface, and is also used to convert the direct current input by the DC interface into alternating current and output the alternating current to the AC output interface.

[0009] In a second aspect, the present application further provides a control device for controlling the inverter described in the embodiment of the present application, the control device comprising:

[0010] A second display module, used to display the working status or device parameters of the inverter;

[0011] A second touch control module, used for receiving manual control of a user to generate a control signal for the inverter;

[0012] The second communication module is used to send the control signal to the inverter and to receive the working status or device parameters of the inverter.

[0013] In a third aspect, the present application also provides a control system, which includes an inverter as described in an embodiment of the present application, and a control device as described in an embodiment of the present application; wherein the inverter is wirelessly connected to the control device, and the control device is used to control the inverter.

[0014] The embodiment of the present application provides an inverter, a control device and a control system, wherein the inverter includes an AC input interface, an AC output interface, a DC interface and a bidirectional inverter circuit. The AC input interface is used to connect an external AC power supply to input AC power. The AC output interface is used to connect an external power-consuming device to output AC power to the power-consuming device. The DC interface is used to connect an external DC power supply to input or output DC power to the DC power supply. The bidirectional inverter circuit is used to convert the AC power inputted by the AC input interface into DC power, output DC power to the DC interface, and also to convert the DC power inputted by the DC interface into AC power, and output AC power to the AC output interface. The inverter provided in the embodiment of the present application can realize bidirectional voltage conversion between an AC power supply and a DC power supply. Through the inverter, not only can an AC power supply such as a mains power supply be used to charge a DC power supply such as a vehicle power supply, but also a DC power supply such as a vehicle power supply can be used to supply power to the power-consuming device, thereby greatly improving the versatility and flexibility of the inverter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1A and Figure 1B is a schematic diagram of an implementation of an inverter provided in an implementation of the present application;

[0017] Figure 2 A circuit diagram of an implementation of an inverter provided in an embodiment of the present application;

[0018] Figure 3 A circuit diagram of an implementation scheme of a bidirectional inverter circuit provided in an embodiment of the present application;

[0019] Figure 4 A circuit diagram of another implementation of the inverter provided in an embodiment of the present application;

[0020] Figure 5 A circuit diagram of another implementation of the inverter provided in an embodiment of the present application;

[0021] Figure 6A circuit diagram of another implementation of the inverter provided in an embodiment of the present application;

[0022] Figure 7 A circuit diagram of another implementation of the inverter provided in an embodiment of the present application;

[0023] Figure 8 A connection diagram of an implementation of a bidirectional inverter circuit and a communication control circuit provided in an embodiment of the present application;

[0024] Fig. 9 A circuit diagram of an implementation of a communication control circuit provided in an embodiment of the present application.

[0025] Fig.10 A circuit diagram of another implementation of the inverter provided in an embodiment of the present application;

[0026] Fig.11 A circuit diagram of another implementation of the inverter provided in an embodiment of the present application;

[0027] Fig.12 A circuit diagram of another implementation of the inverter provided in an embodiment of the present application;

[0028] Fig.13 A schematic diagram of a connection between a control device and a communication control circuit according to an embodiment of the present application;

[0029] Fig.14 A schematic block diagram of a control device provided in an embodiment of the present application;

[0030] Fig.15 A schematic block diagram of a control system provided in an embodiment of the present application.

[0031] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application; it is obvious that the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] The flowcharts shown in the accompanying drawings are only examples and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may also be decomposed, combined or partially merged, so the actual execution order may change according to actual conditions.

[0034] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] Figure 1A and Figure 1B Schematic diagram of an embodiment of an inverter provided in the embodiment of the present application. Figure 1A and Figure 1B As shown, the inverter 100 can be called a power converter (Power Inverter), and the inverter 100 includes an AC input interface 101, an AC output interface 102, and a DC interface 103. Among them, the AC input interface 101 is used for external AC power supply, the AC output interface 102 is used for external power equipment, and the DC interface 103 is used for external DC power supply.

[0036] Among them, the inverter 100 can be used as a vehicle-mounted inverter for use in vehicle-mounted electrical appliances. The AC power supply is, for example, the mains, and of course it can also be other AC power supplies such as an uninterruptible power supply (UPS). Electrical equipment is, for example, electronic devices such as mobile phones, projectors, fans, cameras, and laptops. The DC power supply is, for example, a vehicle-mounted power supply, and of course it can also be other power supplies, such as energy storage devices. The AC input interface 101 and the AC output interface 102 can be one or more, for example, the AC output interface 102 can include a USB (Universal Serial Bus) interface, a type-c interface, and the like.

[0037] like Figure 1A and Figure 1B As shown, the inverter 100 further includes a housing 104 , and the AC input interface 101 , the AC output interface 102 and the DC interface 103 are disposed in the housing 104 . The inverter 100 further includes a bidirectional inverter circuit (not shown in the figure), which is disposed in the housing 104 .

[0038] In one embodiment, the inverter 100 further includes at least one of a first display module 105 and a first touch control module 106. The first display module 105 is used to display the working state or device parameters of the inverter 100. The first touch control module 106 is used to receive manual control of the user to generate a power on / off control signal of the inverter 100. The first touch control module 106 is disposed in the housing 104, and the first touch control module 106 includes at least one of a key, a button, a touch screen, or a toggle switch.

[0039] The power on / off control signal includes a power on control signal and a power off control signal. The power on control signal is used to control the inverter 100 to start up, and the power off control signal is used to control the inverter 100 to shut down. The working state may include states such as standby, power on, and power off, and may also include working modes such as charging mode, inverter mode, and bypass mode. The device parameters may include parameters such as input voltage, output voltage, input power, output power, input current, output current, temperature, and power value.

[0040] Figure 2 This is a circuit diagram of an implementation of an inverter provided in an embodiment of the present application. Figure 2 As shown, the inverter 100 includes an AC input interface 101 , an AC output interface 102 , a DC interface 103 and a bidirectional inverter circuit 110 .

[0041] The AC input interface 101 is used to connect to an external AC power source 10 to input AC power. The AC output interface 102 is used to connect to an external power device 20 to output AC power to the power device 20. The DC interface 103 is used to connect to an external DC power source 30 to input or output DC power to the DC power source 30. The bidirectional inverter circuit 110 is used to convert the AC power input from the AC input interface 101 into DC power and output the DC power to the DC interface 103. The bidirectional inverter circuit 110 is also used to convert the DC power input from the DC interface 103 into AC power and output the AC power to the AC output interface 102.

[0042] The AC power source 10 is, for example, a mains power source, and the DC power source 30 is, for example, a vehicle power source. The power-consuming device 20 is used to consume power, and the power-consuming device 20 is, for example, a load such as an electronic device. The bidirectional inverter circuit 110 connects the AC input interface 101, the AC output interface 102, and the DC interface 103. The AC input interface 101 and the AC output interface 102 of the inverter 100 can be a high-voltage side, and the DC interface 103 of the inverter 100 can be a low-voltage side.

[0043] It should be noted that when the current direction of the inverter 100 is from the high voltage side to the low voltage side, that is, the bidirectional inverter circuit 110 converts the AC power input by the AC input interface 101 into DC power and outputs DC power to the DC interface 103, the inverter 100 can be used in the scenario where the AC power supply 10 charges the DC power supply 30, and the inverter 100 is in charging mode.

[0044] It should be noted that when the current direction of the inverter 100 is from the low-voltage side to the high-voltage side, that is, the bidirectional inverter circuit 110 converts the direct current input by the DC interface 103 into alternating current, and outputs alternating current to the AC output interface 102, the inverter 100 can be used in a scenario where a direct current power supply 30 supplies power to an electrical device 20, and the inverter 100 is in an inverter mode.

[0045] In some examples, the bidirectional inverter circuit 110 may not work, but only provide a path between the AC power source 10 and the power device 20, and the AC power source 10 supplies power to the power device 20. Alternatively, the bidirectional inverter circuit 110 may work while the AC power source 10 supplies power to the power device 20, and the AC power source 10 charges the DC power source 30, and the inverter 100 is in bypass mode.

[0046] In the embodiment of the present application, the inverter 100 can realize bidirectional conversion of AC power to DC power between the AC power source 10 and the DC power source 30. Therefore, the inverter 100 can not only use the AC power source 10 such as the mains to charge the DC power source 30 such as the vehicle power source, but also use the DC power source 30 such as the vehicle power source to supply power to the power-consuming device 20, thereby greatly improving the versatility and flexibility of the inverter 100.

[0047] Exemplarily, the AC input interface 101 includes a mains input interface, and the AC power supply 10 includes a mains power supply. The mains power supply is used to provide, for example, 220V alternating current, and the mains input interface is used to receive, for example, 220V alternating current.

[0048] Exemplarily, the DC interface 103 includes a vehicle power connection port, the DC power supply 30 includes a vehicle power supply, and the vehicle power supply includes at least one of a lithium battery, a sodium battery, a lead-acid battery, or a supercapacitor. The vehicle power supply is, for example, 12V, 24V, or 48V direct current, and the vehicle power connection port is used to receive, for example, 12V, 24V, or 48V direct current.

[0049] Exemplarily, the DC interface 103 includes an energy storage device interface, and the DC power supply 30 includes an energy storage device. The energy storage device may include one or more energy storage units, such as one or more batteries. Multiple batteries may be connected in series or parallel to form the energy storage device.

[0050] In one embodiment, the AC input interface 101 includes a mains input interface, and the AC power supply 10 includes a mains power supply. The DC interface 103 includes a vehicle power connection port, and the DC power supply 30 includes a vehicle power supply, and the vehicle power supply includes at least one of a lithium battery, a sodium battery, a lead-acid battery, or a supercapacitor.

[0051] It should be noted that when the inverter 100 is a vehicle-mounted inverter, the AC power source 10 may be a mains power source, and the DC power source 30 may be a vehicle-mounted power source. Therefore, the inverter 100 can be used in a scenario where the mains power source charges the vehicle-mounted power source, and the inverter 100 is in a charging mode at this time.

[0052] The vehicle power supply includes a start-stop power supply, and the DC interface 103 is used to output a set DC power for charging the start-stop power supply, and the set DC power includes at least one of 12V DC, 24V DC, or 48V DC. Here, 12V, 24V, or 48V does not limit the voltage of the DC power output by the DC interface 103, but refers to the voltage range that can charge the 12V, 24V, or 48V vehicle power supply.

[0053] In one embodiment, the DC interface 103 includes a positive electrode wiring member and a negative electrode wiring member, wherein the positive electrode wiring member is used to connect to the positive terminal of the DC power source 30, and the negative electrode wiring member is used to connect to the negative terminal of the DC power source 30. The positive electrode wiring member and the negative electrode wiring member may include a connecting column, a connecting wire, etc.

[0054] In one embodiment, if Figure 3 As shown, the bidirectional inverter circuit 110 includes a DC-DC conversion circuit 111 and an AC-DC conversion circuit 112 .

[0055] The DC-DC conversion circuit 111 is used to connect to the DC interface 103 . The DC-DC conversion circuit 111 is also connected to the AC-DC conversion circuit 112 , and the AC-DC conversion circuit 112 is also connected to the AC input interface 101 and the AC output interface 102 .

[0056] It should be noted that the DC-DC conversion circuit 111 is used to perform step-up conversion or step-down conversion on direct current. The AC-DC conversion circuit 112 is used to perform AC-DC conversion or direct-AC conversion, that is, converting alternating current into direct current, or converting direct current into alternating current, and can also perform step-up and step-down conversion. For example, the AC-DC conversion circuit 112 can convert 400V direct current into 220V alternating current, or can also boost 220V alternating current into 400V direct current.

[0057] In one embodiment, if Figure 4 As shown, the DC-DC conversion circuit 111 is used to step up the DC power input from the DC interface 103 . The AC-DC conversion circuit 112 is used to convert the DC power flowing through into AC power and output it to the AC output interface 102 .

[0058] Exemplarily, when the current direction of the inverter 100 is from the low-voltage side to the high-voltage side, that is, when the inverter 100 is in the inverter mode, the DC-DC conversion circuit 111 is used to boost the DC power output by the DC power supply 30, and the AC-DC conversion circuit 112 is used to convert the DC power flowing through it into AC power and output it to the AC input interface 101.

[0059] In one embodiment, if Figure 4As shown, the AC-DC conversion circuit 112 is also used to convert the AC power inputted by the AC input interface 101 into DC power. The DC-DC conversion circuit 111 is also used to step down the DC power flowing through and output it to the DC interface 103.

[0060] Exemplarily, when the current direction of the inverter 100 is from the high voltage side to the low voltage side, that is, when the inverter 100 is in the charging mode, the AC-DC conversion circuit 112 is also used to convert the AC power input by the AC input interface 101 (such as the power interface) into AC-DC; the DC-DC conversion circuit 111 is also used to step down the DC power flowing through it and output it to the DC power supply 30.

[0061] In one embodiment, if Figure 5 As shown, the AC-DC conversion circuit 112 includes a DC-AC conversion branch 1121 and an AC-DC conversion branch 1122. The DC-AC conversion branch 1121 is used to convert the DC power input by the DC-DC conversion circuit 111 to AC power and output it to the AC output interface 102. The AC-DC conversion branch 1122 is used to convert the AC power input by the AC input interface 101 to DC power and output it to the DC-DC conversion circuit 111.

[0062] The DC-AC conversion branch 1121 can work in a PWM (Sinusoidal Pulse Width Modulation) mode to generate sinusoidal AC power. The AC-DC conversion branch 1122 can work in a bridgeless PFC (Power Factor Correction) mode to rectify the input AC power and generate DC power.

[0063] It should be noted that, through the circuit design of the DC-AC conversion branch 1121 and the AC-DC conversion branch 1122, the functions of a conventional inverter (DC-AC) and a rectifier (AC-DC) can be combined to better realize the bidirectional flow of electric energy.

[0064] In one embodiment, if Figure 6 As shown, the bidirectional inverter circuit 110 includes a first voltage conversion branch 1101 and a second voltage conversion branch 1102. The first voltage conversion branch 1101 is used to perform step-up conversion and direct-to-alternating-current conversion on the direct current input from the DC interface 103, and output it to the AC output interface 102. The second voltage conversion branch 1102 is used to perform step-down conversion and AC-to-DC conversion on the alternating current input from the AC input interface 101, and output it to the DC interface 103.

[0065] It should be noted that the bidirectional inverter circuit 110 is divided into a first voltage conversion branch 1101 and a second voltage conversion branch 1102, wherein the first voltage conversion branch 1101 is responsible for converting DC power into AC power, and the second voltage conversion branch 1102 is responsible for converting AC power into DC power, thereby reducing the burden of a single voltage conversion branch, thereby better controlling the quality of the output power, such as reducing harmonics and improving the power factor.

[0066] For example, Figure 5 and Figure 6 As shown, the first voltage conversion branch 1101 may include a DC-DC conversion circuit 111 and a direct-to-alternating current conversion branch 1121 connected in sequence. The second voltage conversion branch 1102 may include a DC-DC conversion circuit 111 and an alternating-to-direct current conversion branch 1122 connected in sequence.

[0067] In one embodiment, if Figure 7 As shown, the inverter 100 further includes a communication control circuit 114, which is used to receive an external control signal and control the working state of the bidirectional inverter circuit 110 based on the control signal. The control signal can be a wireless signal or a wired signal.

[0068] For example, Figure 7 and Figure 8 As shown, the communication control circuit 114 is connected to the bidirectional inverter circuit 110, and the bidirectional inverter circuit 110 includes at least a DC-DC conversion circuit 111 and an AC-DC conversion circuit 112. The communication control circuit 114 is connected to at least one of the DC-DC conversion circuit 111 and the AC-DC conversion circuit 112.

[0069] For example, Figure 7 and Figure 8 As shown, the bidirectional inverter circuit 110 at least includes a DC-DC conversion circuit 111 and an AC-DC conversion circuit 112. The communication control circuit 114 controls at least one of the DC-DC conversion circuit 111 and the AC-DC conversion circuit 112 according to a control signal.

[0070] In one embodiment, if Fig. 9 As shown, the communication control circuit 114 includes a first communication module 1141 and a first control module 1142, and the first communication module 1141 is connected to the first control module 1142; the first communication module 1141 is used to receive an external input control signal and send the control signal to the first control module 1142; the first control module 1142 is used to generate corresponding control instructions according to the control signal, and the control instructions are used to control the bidirectional inverter circuit 110.

[0071] It should be noted that the first communication module 1141 and the first control module 1142 may be integrated. By controlling the bidirectional inverter circuit 110, the functions of turning on and off the inverter 100, controlling the inverter 100 to enter different working modes, and controlling the output voltage, output power and other parameters of the inverter 100 in different working modes can be realized.

[0072] In one embodiment, the DC-DC conversion circuit 111 and the AC-DC conversion circuit 112 include multiple switch units; the communication control circuit 114 is connected to the control ends of the multiple switch units in the DC-DC conversion circuit 111 and the AC-DC conversion circuit 112 respectively.

[0073] For example, Figures 2 to 10 As shown, when the control signal includes a power-on instruction of the inverter 100, the communication control circuit 114 is used to control the DC-DC conversion circuit 111 and the AC-DC conversion circuit 112 to be in a conducting state according to the power-on instruction, so as to enable the DC-DC conversion circuit 111 and the AC-DC conversion circuit 112 to work.

[0074] For example, Figures 2 to 10 As shown, when the control signal includes a shutdown instruction of the inverter 100, the communication control circuit 114 is used to control at least one switch unit in the DC-DC conversion circuit 111 and the AC-DC conversion circuit 112 to be in an off state according to the shutdown instruction, so that the DC-DC conversion circuit 111 and the AC-DC conversion circuit 112 stop working.

[0075] Exemplarily, the inverter 100 further includes a relay, which is connected between the AC input interface 101, the AC output interface 102 and the AC-DC conversion circuit 112, and the relay is used to control the loop between the AC input interface 101, the AC output interface 102 and the AC-DC conversion circuit 112. When the wireless control signal includes a bypass instruction of the inverter 100, the communication control circuit 114 is used to control the relay to make the loop between the AC input interface 101 and the AC output interface 102 conductive, so that the AC power supply 10 connected to the AC input interface 101 can power the DC power supply 30 and / or the power-consuming device 20.

[0076] In one embodiment, if Figure 7 and Figure 8 As shown, the inverter 100 further includes a communication control circuit 114, which is used to send parameter signals to the outside based on the device parameters of the inverter 100. The parameter signals can be sent to the outside through the communication control circuit 114, thereby realizing external monitoring of the device parameters of the inverter 100.

[0077] The parameter signal may carry device parameters of the inverter 100. The parameter signal may be a wireless signal or a wired signal.

[0078] In one embodiment, if Fig. 9 As shown, the communication control circuit 114 includes a first communication module 1141 and a first control module 1142. The first control module 1142 is used to obtain the device parameters of the inverter 100; the first communication module 1141 is also used to generate corresponding parameter signals according to the device parameters of the inverter 100 and send the parameter signals to the outside.

[0079] The device parameters of the inverter 100 include at least one of the following: input voltage, output voltage, input power, output power, input current, output current, temperature, on / off status, and power value.

[0080] In one embodiment, if Fig.11 As shown, the inverter 100 further includes a collection circuit 115, which is used to collect parameter information of the inverter 100 and send a signal to the communication control circuit 114 based on the collected parameter information. The collection circuit 115 includes at least one of a voltage collection module, a power collection module, a current collection module, and a temperature collection module.

[0081] It should be noted that the voltage acquisition module is used to acquire the input voltage and output voltage of the inverter 100. The power acquisition module is used to acquire the input power and output power of the inverter 100. The current acquisition module is used to acquire the input current and output current of the inverter 100. The temperature acquisition module is used to acquire the temperature of the inverter 100, and the installation position of the temperature acquisition module can be determined according to the temperature position to be acquired. The acquisition circuit 115 can also include other acquisition modules, such as a power acquisition module, which is used to acquire the power value of the built-in battery in the inverter 100.

[0082] In one embodiment, if Fig.12 As shown, the inverter 100 also includes a collection circuit 115, and the bidirectional inverter circuit 110 includes at least a DC-DC conversion circuit 111 and an AC-DC conversion circuit 112. The collection circuit 115 is connected to the DC-DC conversion circuit 111 and the AC-DC conversion circuit 112, and is used to obtain the power parameters of the DC-DC conversion circuit 111 and the AC-DC conversion circuit 112.

[0083] It should be noted that the acquisition circuit 115 may be an operational amplifier processing circuit, which amplifies the line voltage, current and other signals, and also includes impedance transformation to reduce the load-pull effect.

[0084] Among them, the communication control circuit 114 is also connected to the acquisition circuit 115, and is used to generate device parameters of the inverter 100 according to the power parameters of the DC-DC conversion circuit 111 and the AC-DC conversion circuit 112; the communication control circuit 114 is also used to send parameter signals to the outside according to the device parameters of the inverter 100.

[0085] It should be noted that the communication control circuit 114 includes at least one of a wireless communication module or a wired communication module, wherein the wireless communication module includes at least one of a Bluetooth module, a NB-IoT module, a 4G module, a 5G module, an infrared module, a WIFI module, a radio frequency identification module or a ZigBee module.

[0086] In one embodiment, if Fig.13 As shown, the communication control circuit 114 is used to communicate with the control device 200, and the control device 200 includes at least one of a mobile terminal, a remote controller, or a server. The control device 200 can realize external communication and control of the inverter 100, so that the inverter 100 can be remotely controlled, and the user can realize convenient control of the inverter 100 without touching the inverter 100 body.

[0087] The inverter 100 provided in the above embodiment includes an AC input interface 101, an AC output interface 102, a DC interface 103 and a bidirectional inverter circuit 110. The AC input interface 101 is used to connect to an external AC power source 10 to input AC power. The AC output interface 102 is used to connect to an external power device 20 to output AC power to the power device 20. The DC interface 103 is used to connect to an external DC power source 30 to input or output DC power to the DC power source 30. The bidirectional inverter circuit 110 is used to convert the AC power inputted by the AC input interface 101 into DC power and output DC power to the DC interface 103, and is also used to convert the DC power inputted by the DC interface 103 into AC power and output AC power to the AC output interface 102. The inverter 100 provided in the embodiment of the present application can realize bidirectional voltage conversion between the AC power supply 10 and the DC power supply 30. Through the inverter 100, not only can the AC power supply 10 such as the mains be used to charge the DC power supply 30 such as the vehicle power supply, but the DC power supply 30 such as the vehicle power supply can also be used to power the electrical equipment 20, thereby greatly improving the versatility and flexibility of use of the inverter 100.

[0088] See also Fig.14 , Fig.14 A schematic block diagram of a control device provided in an embodiment of the present application.

[0089] like Fig.14As shown, the control device 400 includes a second display module 410 , a second touch module 420 and a second communication module 430 . The control device 400 is used to control the inverter 300 .

[0090] The second display module 410 is used to display the working state or device parameters of the inverter 300. The second touch module 420 is used to receive the manual control of the user to generate a control signal for the inverter 300. The second communication module 430 is used to send the control signal to the inverter 300 and also to receive the working state or device parameters of the inverter 300. The inverter 440 may be the inverter 300 in the above-mentioned embodiment of the present application.

[0091] In one embodiment, the control device 400 is wirelessly connected to the inverter 300, and the second communication module includes a wireless communication module; the wireless communication module includes at least one of a Bluetooth module, a NB-IoT module, a 4G module, a 5G module, an infrared module, a WIFI module, a radio frequency identification module or a ZigBee module.

[0092] Those skilled in the art will understand that Fig.14 The structure shown in the figure is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the control device 400 to which the scheme of the present application is applied. The specific control device 400 may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0093] It should be noted that those skilled in the art can clearly understand that, for the convenience and simplicity of description, the specific working process of the control device 400 described above can refer to the corresponding process in the aforementioned inverter embodiment, which will not be repeated here.

[0094] See also Fig.15 , Fig.15 A schematic block diagram of the structure of a control system provided in an embodiment of the present application.

[0095] like Fig.15 As shown, the control system 500 includes: an inverter 510 and a control device 520. The inverter 510 is wirelessly connected to the control device 520, and the control device 520 is used to control the inverter 510.

[0096] In some embodiments, the inverter 510 may be the inverter 100 in the aforementioned embodiment. The control device 520 may be the control device 400 in the aforementioned embodiment.

[0097] It should be noted that those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the control system 500 described above can refer to the corresponding process in the aforementioned inverter embodiment, and will not be repeated here.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. An inverter, characterized in that: include: AC input interface, used for external AC power supply to input AC power; AC output interface, used for connecting to an external power-consuming device to output alternating current to the power-consuming device; A DC interface, used for connecting to an external DC power supply to input or output DC power to the DC power supply; The bidirectional inverter circuit is used to convert the alternating current input by the AC input interface into direct current and output the direct current to the DC interface, and is also used to convert the direct current input by the DC interface into alternating current and output the alternating current to the AC output interface.

2. The inverter according to claim 1, characterized in that: The AC input interface includes a mains input interface, and the AC power supply includes a mains power supply; And / or, the DC interface includes a vehicle power connection port, the DC power supply includes a vehicle power supply, and the vehicle power supply includes at least one of a lithium battery, a sodium battery, a lead-acid battery or a supercapacitor.

3. The inverter according to claim 2, characterized in that: The vehicle-mounted power supply includes a start-stop power supply, and the DC interface is used to output a set direct current for charging the start-stop power supply, and the set direct current includes at least one of 12V direct current, 24V direct current or 48V direct current.

4. The inverter according to claim 1, characterized in that: The DC interface includes a positive electrode wiring member and a negative electrode wiring member, wherein the positive electrode wiring member is used to connect to the positive terminal of the DC power supply, and the negative electrode wiring member is used to connect to the negative terminal of the DC power supply.

5. The inverter according to claim 1, characterized in that: The bidirectional inverter circuit is connected to the AC input interface, the AC output interface and the DC interface.

6. The inverter according to claim 1, characterized in that: The bidirectional inverter circuit includes a DC-DC conversion circuit and an AC-DC conversion circuit, wherein: The DC-DC conversion circuit is used to perform voltage boost conversion on the direct current input by the DC interface; The AC / DC conversion circuit is used to convert the DC power flowing through it into AC power and output it to the AC output interface.

7. The inverter according to claim 6, characterized in that: The AC / DC conversion circuit is also used to convert the AC power input by the AC input interface into DC power; The DC-DC conversion circuit is also used to step down the DC power flowing through it and output it to the DC interface.

8. The inverter according to claim 6 or 7, characterized in that: The DC-DC conversion circuit is used to connect to a DC interface; The DC-DC conversion circuit is also connected to the AC-DC conversion circuit, and the AC-DC conversion circuit is also connected to the AC input interface and the AC output interface.

9. The inverter according to claim 1, characterized in that: The inverter further includes a communication control circuit for receiving an external control signal and controlling a working state of the bidirectional inverter circuit based on the control signal.

10. The inverter according to claim 9, characterized in that: The communication control circuit is connected to the bidirectional inverter circuit, which includes at least a DC-DC conversion circuit and an AC-DC conversion circuit. The communication control circuit is connected to at least one of the DC-DC conversion circuit and the AC-DC conversion circuit.

11. The inverter according to claim 9, characterized in that: The bidirectional inverter circuit at least includes a DC-DC conversion circuit and an AC-DC conversion circuit, and the communication control circuit controls at least one of the DC-DC conversion circuit and the AC-DC conversion circuit according to the control signal.

12. The inverter according to claim 9, characterized in that: The communication control circuit includes a first communication module and a first control module, wherein the first communication module is connected to the first control module; The first communication module is used to receive a control signal input from the outside and send the control signal to the first control module; The first control module is used to generate corresponding control instructions according to the control signal, and the control instructions are used to control the bidirectional inverter circuit.

13. The inverter according to claim 6, characterized in that: The DC-DC conversion circuit and the AC-DC conversion circuit include a plurality of switch units; the communication control circuit is respectively connected to the control ends of the plurality of switch units in the DC-DC conversion circuit and the AC-DC conversion circuit.

14. The inverter according to claim 13, characterized in that: When the control signal includes a power-on instruction of the inverter, the communication control circuit is used to control the DC-DC conversion circuit and the plurality of switch units in the AC-DC conversion circuit to be in a conducting state according to the power-on instruction, so that the DC-DC conversion circuit and the AC-DC conversion circuit work; And / or, when the control signal includes a shutdown instruction of the inverter, the communication control circuit is used to control at least one switch unit in the DC-DC conversion circuit and the AC-DC conversion circuit to be in an off state according to the shutdown instruction, so that the DC-DC conversion circuit and the AC-DC conversion circuit stop working.

15. The inverter according to claim 1, characterized in that: The inverter further includes a communication control circuit for sending a parameter signal to the outside based on the device parameters of the inverter.

16. The inverter according to claim 15, characterized in that: The communication control circuit includes a first communication module and a first control module, wherein the first control module is used to obtain the device parameters of the inverter; the first communication module is also used to generate a corresponding parameter signal according to the device parameters of the inverter, and send the parameter signal to the outside.

17. The inverter according to claim 15, characterized in that: The device parameters of the inverter include at least one of the following: input voltage, output voltage, input power, output power, input current, output current, temperature, on / off status, and power value.

18. The inverter according to claim 15, characterized in that: The inverter also includes an acquisition circuit for acquiring parameter information of the inverter and sending a signal to the communication control circuit based on the acquired parameter information. The acquisition circuit includes at least one of a voltage acquisition module, a power acquisition module, a current acquisition module, and a temperature acquisition module.

19. The inverter according to claim 15, characterized in that: The inverter further includes a collection circuit, the bidirectional inverter circuit at least includes a DC-DC conversion circuit and an AC-DC conversion circuit, the collection circuit is connected to the DC-DC conversion circuit and the AC-DC conversion circuit, and is used to obtain the electric energy parameters of the DC-DC conversion circuit and the AC-DC conversion circuit; The communication control circuit is also connected to the acquisition circuit, and is used to generate the device parameters of the inverter according to the electric energy parameters of the DC-DC conversion circuit and the AC-DC conversion circuit; the communication control circuit is also used to send the parameter signal to the outside according to the device parameters of the inverter.

20. The inverter according to any one of claims 9 to 19, characterized in that: The communication control circuit includes at least one of a wireless communication module or a wired communication module, wherein the wireless communication module includes at least one of a Bluetooth module, a NB-IoT module, a 4G module, a 5G module, an infrared module, a WIFI module, a radio frequency identification module or a ZigBee module.

21. The inverter according to any one of claims 9 to 20, characterized in that: The communication control circuit is used to communicate with a control device, and the control device includes at least one of a mobile terminal, a remote controller or a server.

22. The inverter according to any one of claims 1 to 21, characterized in that: It also includes a housing, the AC input interface, the AC output interface and the DC interface are arranged in the housing, and the bidirectional inverter circuit is arranged in the housing; The inverter further includes at least one of the following modules: A first display module, used to display the working status or device parameters of the inverter; The first touch control module is used to receive manual control of the user to generate a power on / off control signal of the inverter. The first touch control module is arranged in the housing. The first touch control module includes at least one of a key, a button, a touch screen or a toggle switch.

23. A control device, characterized in that: Used to control the inverter according to any one of claims 1 to 22, the control device comprises: A second display module, used to display the working status or device parameters of the inverter; A second touch control module, used for receiving manual control of a user to generate a control signal for the inverter; The second communication module is used to send the control signal to the inverter and to receive the working status or device parameters of the inverter.

24. The control device according to claim 23, characterized in that The control device is wirelessly connected to the inverter, and the second communication module includes a wireless communication module; the wireless communication module includes at least one of a Bluetooth module, a NB-IoT module, a 4G module, a 5G module, an infrared module, a WIFI module, a radio frequency identification module or a ZigBee module.

25. A control system, characterized in that: The control system comprises an inverter according to any one of claims 1 to 22, and a control device according to any one of claims 23 to 24; wherein the control device is used to control the inverter.

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