Handshake circuit of power equipment and power equipment

Abstract

The utility model relates to a handshake circuit of power equipment and the power equipment.The handshake circuit of the power equipment comprises a power interface used for being connected with electric equipment, a power supply module used for providing detection voltage, an isolation module and a control module, and the control module sends out a handshake signal to control the isolation module to load the detection voltage to the power interface. And the detection voltage can be transmitted to the accessed electric equipment only through the electric power connection line. In the embodiment of the application, when the control module generates the handshake success signal based on the detection voltage through the power interface or in a wireless mode, it is indicated that hardware handshake between the power equipment and the electric equipment succeeds, through the embodiment of the application, communication between the power equipment and the electric equipment does not need to depend on an independently-arranged communication line, and the communication efficiency is improved. And the product cost can be reduced.

Description

Technical Field

[0001] The present application belongs to the field of power electronics technology, and in particular, relates to a handshake circuit of a power device and a power device. Background Art

[0002] When power generation equipment is used in conjunction with mobile energy storage equipment or other power-consuming equipment, the traditional handshake communication method uses a separate communication line for communication. Using a separate communication line for communication is not conducive to reducing product costs. Utility Model Content

[0003] The purpose of the present application is to provide a handshake circuit of an electric power device and an electric power device, aiming to solve the problem that the related handshake circuit requires a separate communication line, which is not conducive to reducing product costs.

[0004] In a first aspect, an embodiment of the present application provides a handshake circuit of an electric power device, the handshake circuit comprising:

[0005] Power interface, used for power connection with electrical equipment;

[0006] A power supply module, used for providing a detection voltage;

[0007] an isolation module, connected between the power supply module and the power interface, and configured to apply the detection voltage to the power interface under the control of a handshake signal;

[0008] A control module is connected to the isolation module and is used to output the handshake signal and receive a handshake success signal through the power interface or wirelessly; the handshake success signal is generated based on the detection voltage after a power connection is established between the power device and the power-consuming device.

[0009] In one of the embodiments, a wireless module is further included, wherein the wireless module is connected to the control module, and the control module is used to wirelessly interact with the power-consuming device through the wireless module.

[0010] In one embodiment, the isolation module includes a first switch tube and a relay, the control end of the first switch tube is connected to the control module, and the coil of the relay is connected in series with the first switch tube and connected to a first working power supply;

[0011] The first switch of the relay is connected between the output positive pole of the power supply module and the positive terminal of the power interface;

[0012] The second switch of the relay is connected between the output negative pole of the power supply module and the negative pole terminal of the power interface.

[0013] In one of the embodiments, a handshake module is further included, which is connected to the isolation module and the control module. The handshake module is used to receive the voltage component generated by the electrical device based on the detection voltage, and generate a handshake success signal according to the voltage component and output it to the control module.

[0014] In one embodiment, the isolation module includes a first switch tube and a relay, the control end of the first switch tube is connected to the control module, and the coil of the relay is connected in series with the first switch tube to the first working power supply;

[0015] The first switch of the relay is connected between the handshake module and the neutral terminal of the power interface, and transmits the voltage component when turned on;

[0016] The second switch of the relay is connected between the output negative pole of the power supply module and the ground terminal of the power interface.

[0017] In one embodiment, the handshake module includes a switch unit, a control end of the switch unit is connected to the first switch of the relay, and the switch unit is turned on under the driving of the voltage component to output the handshake success signal.

[0018] In one embodiment, the switch unit includes a photocoupler and a first current limiting resistor, the positive electrode of the light source of the photocoupler constitutes the control end of the switch unit, coupled to the first switch of the relay, the negative electrode of the light source of the photocoupler is connected to the output negative electrode of the power supply module, the positive electrode of the photoreceiver of the photocoupler is connected to the control module, the positive electrode of the photoreceiver of the photocoupler is also connected to the second working power supply through the first current limiting resistor, and the negative electrode of the photoreceiver of the photocoupler is grounded.

[0019] In one embodiment, the handshake module also includes a self-locking unit, which is connected between the control end of the switch unit and the first switch of the relay. The self-locking unit is also connected to the power supply module. The self-locking unit is used to keep transmitting the detection voltage to the control end of the switch unit under the drive of the voltage component, so that the switch unit is turned on to keep outputting the handshake success signal.

[0020] In one embodiment, the self-locking unit includes a second switch tube, a third switch tube, a second current limiting resistor, a first voltage-dividing resistor, a second voltage-dividing resistor, a third voltage-dividing resistor and a fourth voltage-dividing resistor;

[0021] The first end of the second current limiting resistor is connected to the first switch of the relay, the second end of the second current limiting resistor is connected to the first end of the first voltage-dividing resistor, the first end of the second voltage-dividing resistor and the first conduction end of the second switch tube, the second end of the first voltage-dividing resistor is connected to the output negative electrode of the power supply module, the second end of the second voltage-dividing resistor is connected to the control end of the third switch tube, the second conduction end of the second switch tube is connected to the output positive electrode of the power supply module, the control end of the second switch tube is connected to the first end of the third voltage-dividing resistor, the second end of the third voltage-dividing resistor is connected to the first end of the fourth voltage-dividing resistor and the first conduction end of the third switch tube, the second end of the fourth voltage-dividing resistor is connected to the output positive electrode of the power supply module, and the second conduction end of the third switch tube is connected to the control end of the switch unit.

[0022] In a second aspect, an embodiment of the present application further provides an electric power device, comprising the handshake circuit of the electric power device as described above.

[0023] Compared with the related art, the embodiment of the present application has the following beneficial effects: the handshake circuit of the power equipment includes a power interface for connecting the power-consuming equipment, a power supply module for providing a detection voltage, an isolation module and a control module, and the control module sends a handshake signal to control the isolation module to load the detection voltage onto the power interface so as to transmit the detection voltage to the connected power-consuming equipment. In the embodiment of the present application, when the control module receives a handshake success signal generated based on the detection voltage through the power interface or wirelessly, it indicates that the hardware handshake between the power equipment and the power-consuming equipment is successful. Through the embodiment of the present application, the communication between the power equipment and the power-consuming equipment does not need to rely on a separately established communication line, which is conducive to reducing product costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a handshake circuit of an electric power device provided in one embodiment of the present application;

[0025] Figure 2 A schematic diagram of the structure of a handshake circuit of an electric power device provided in one embodiment of the present application;

[0026] Figure 3 A circuit diagram of a handshake circuit of an electric power device provided in one embodiment of the present application;

[0027] Figure 4 A schematic diagram of the structure of a handshake circuit of an electric power device provided in one embodiment of the present application;

[0028] Figure 5 A circuit diagram of a handshake circuit of an electric power device provided in one embodiment of the present application;

[0029] Figure 6A circuit diagram of a handshake circuit of an electric power device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0034] See also Figure 1 The present application embodiment provides a handshake circuit of an electric device, where the electric device 100 is, for example, a power generation device, an energy storage device or a load device. The handshake circuit includes a power interface, a power supply module 110 , an isolation module 120 and a control module 130 .

[0035] The power interface is used to establish an electrical connection with the power-consuming device 200. The power supply module 110 is used to provide a detection voltage V1. The isolation module 120 is connected between the power supply module 110 and the power interface, and is used to apply the detection voltage V1 to the power interface under the control of the handshake signal Enry. The control module 130 is connected to the isolation module 120, and is used to output the handshake signal Enry, and receive the handshake success signal Enok through the power interface or wirelessly. Among them, the handshake success signal Enok is generated based on the detection voltage V1 after the power connection is established between the power device 100 and the power-consuming device 200.

[0036] The power device 200 is, for example, an energy storage device or other power consuming device. The present application embodiment is described by taking the power device 100 as a power generation device and the power device 200 as an energy storage device as an example, but is not limited thereto.

[0037] The power interface is connected to the power device 200 through a power connection line, which can be a cable connection or a matching pin header connection. Exemplarily, the power connection method between the power interface and the power device 200 can be a single-phase two-wire or three-wire transmission cable or a gold finger connector connection. The control module 130 is used to output a handshake signal Enry for handshake communication with the power device 200 upon receiving an external input instruction, such as a network input or an operation button input. The isolation module 120 has a switch control function, and applies the detection voltage V1 to the power interface under the control of the handshake signal Enry.

[0038] In one embodiment, the electric device 200 generates a handshake success signal Enok after receiving the detection voltage V1 from the electric device 100. The control module 130 can receive the handshake success signal Enok through the power interface or wirelessly to determine that the hardware handshake with the electric device 200 is successful. In one embodiment, after the control module 130 determines that the hardware handshake with the electric device 200 is successful, it communicates wirelessly. This communication method does not need to rely on a single communication line, which is conducive to reducing product costs.

[0039] Optionally, the isolation module 120 may also have an electrical isolation function, that is, the electrical connection between the power supply module 110 and the power interface is disconnected when the handshake signal Enry is not received to achieve electrical isolation; the power supply module 110 is connected to the power interface when the handshake signal Enry is received. The isolation module 120 with an electrical isolation function is beneficial to the protection of the internal circuit of the power device 100, such as anti-static; and also prevents the power device 100 from accidentally discharging at the power interface.

[0040] See also Figure 2 In one embodiment, the handshake circuit further includes a wireless module 140 , which is connected to the control module 130 , and the control module 130 is used to wirelessly interact with the power-consuming device 200 through the wireless module 140 .

[0041] For example, the control module 130 can wirelessly receive the handshake success signal Enok generated by the power device 200 based on the detection voltage V1 through the wireless module 140. Thereafter, the control module 130 and the power device 200 can also communicate with each other through the wireless module 140 to exchange data, such as start and stop instructions, transmission electrical parameters, etc. It can be understood that a corresponding communication module is also provided on the power device 200 for data exchange with the wireless module 140 of the power device 100. The communication module can be a wireless network module or a wired network module. Among them, the wired network module can be connected to an external wireless router and then exchange data with the wireless module 140 of the power device 100.

[0042] In one embodiment, the power-consuming device 200 broadcasts a charging demand instruction when charging is required. When the control module 130 of the power device 100 receives the charging demand instruction through the wireless module 140, it sends the handshake signal Enry to the isolation module 120. After receiving the handshake signal Enry, the isolation module 120 applies the detection voltage V1 output by the power supply module 110 to the power interface. After receiving the handshake success signal Enok, the control module 130 determines that the hardware connection with the power-consuming device 200 is completed, and then controls the power device 100 to output the corresponding power to the power-consuming device 200 according to the charging demand instruction.

[0043] See also Figure 3 In one embodiment, the isolation module 120 includes a first switch tube Q1 and a relay. The control end of the first switch tube Q1 is connected to the control module 130, and the coil 121 of the relay is connected in series with the first switch tube Q1 to the first working power supply Vcc1. The first switch 122 of the relay is connected between the output positive pole of the power supply module 110 and the positive terminal L of the power interface; the second switch 123 of the relay is connected between the output negative pole of the power supply module 110 and the negative terminal N of the power interface.

[0044] It is understandable that the first working power source Vcc1 is generated by an internal power source of the power device 100, such as the power supply module 110. The first switch tube Q1 is a semiconductor transistor such as a MOS tube or an IGBT, such as an NMOS tube. The positive terminal L and the negative terminal N of the power interface can also be called the live wire terminal and the neutral wire terminal when transmitting alternating current.

[0045] In this embodiment, the first switch tube Q1 is turned on when receiving the handshake signal Enry output by the control module 130, so that the coil 121 of the relay is energized to attract the first switch 122 and the second switch 123 of the relay. When the first switch 122 and the second switch 123 are in the attracted state, the output positive pole of the power supply module 110 is connected to the positive terminal L of the power interface, and the output negative pole of the power supply module 110 is connected to the negative terminal N of the power interface, and the detection voltage V1 provided by the power supply module 110 can be applied to the power interface. The first switch tube Q1 is turned off when the handshake signal Enry output by the control module 130 is not received, and the coil 121 of the relay is de-energized, so that the first switch 122 and the second switch 123 are disconnected, and the power supply circuit of the detection voltage V1 is cut off, so that the power supply module 110 and the power interface are electrically isolated.

[0046] See also Figure 4 In one embodiment, the handshake circuit further includes a handshake module 150, and the handshake module 150 is connected to the isolation module 120 and the control module 130. The handshake module 150 is used to receive the voltage component V2 generated by the power-consuming device 200 based on the detection voltage V1, and generate a handshake success signal Enok according to the voltage component V2 and output it to the control module 130. In this embodiment, the voltage component V2 generated by the power-consuming device 200 based on the detection voltage V1 is transmitted back to the power interface through the power connection line, and the power interface outputs the voltage component V2 to the handshake module 150 through the isolation module 120, and the handshake module 150 generates a handshake success signal Enok according to the voltage component V2.

[0047] In some embodiments, the electric device 200 includes a first capacitor CX1 and a second capacitor CY1. The first capacitor CX1 is connected between the live terminal L and the neutral terminal N of the input interface of the electric device 200, and the second capacitor CY1 is connected between the neutral terminal N and the ground terminal PE of the input interface of the electric device 200.

[0048] Exemplarily, the first capacitor CX1 is an X capacitor inside the power-consuming device 200, and the X capacitor is generally at the uF level. The second capacitor CY1 is a Y capacitor inside the power-consuming device 200, and the Y capacitor is generally at the nF level.

[0049] In one embodiment, when the power device 100 (e.g., a fuel generator) is turned on, the internal starting battery is activated, that is, the internal power supply inside the fuel generator is started. The internal power supply starts working as the power supply module 110 to output the detection voltage V1 (e.g., 12V voltage). When handshake confirmation is required, the control module 130 outputs the handshake signal Enry, and the isolation module 120 applies the detection voltage V1 to the power interface, and transmits it to the live terminal L and the ground terminal PE of the power-consuming device 200 through the power connection line. In this embodiment, the capacitance of the second capacitor CY1 is much smaller than the capacitance of the first capacitor CX1. Due to the voltage division effect of the first capacitor CX1 and the second capacitor CY1, the voltage component V2 between the neutral terminal N and the ground terminal PE at this time produces current. If the current can flow back to the power interface (neutral terminal N) of the power device 100 through the neutral terminal N through the power connection line, it is then transmitted to the handshake module 150 through the isolation module 120, so that the handshake module 150 receives the current. After receiving the current, the handshake module 150 outputs a handshake success signal Enok. At this time, the control module 130 confirms that the power device 100 and the power-consuming device 200 have completed the power connection.

[0050] See also Figure 5 In one embodiment, the isolation module 120 includes a first switch tube Q1 and a relay. The control end of the first switch tube Q1 is connected to the control module 130, and the coil 121 of the relay is connected in series with the first switch tube Q1 to the first working power supply Vcc1. The first switch 122 of the relay is connected between the handshake module 150 and the neutral terminal N of the power interface, and transmits the voltage component V2 when connected. The second switch 123 of the relay is connected between the output negative pole of the power supply module 110 and the ground terminal PE of the power interface. Specifically, see Figure 5 The first end of the first switch Q1 is connected to the first working power source Vcc1 through the coil 121 of the relay, and the second end of the first switch Q1 is grounded.

[0051] It is understandable that the first working power source Vcc1 can be generated by the internal power source of the power device 100. The first switch tube Q1 is a semiconductor transistor such as a MOS tube or an IGBT, for example, an NMOS tube. In this embodiment, the output positive electrode of the power supply module 110 is directly connected to the live wire terminal L of the power interface through a wire.

[0052] In this embodiment, the first switch tube Q1 is turned on when receiving the handshake signal Enry output by the control module 130, so that the coil 121 of the relay is energized to attract the second switch 123 of the relay, and the output negative electrode of the power supply module 110 is connected to the ground terminal PE of the power interface. When the second switch 123 is in the attracted state, the detection voltage V1 provided by the power supply module 110 (through the live terminal L and the ground terminal PE) can be applied to the power interface to be transmitted to the live terminal L and the ground terminal PE of the power device 200. At the same time, the coil 121 of the relay attracts the first switch 122, so that the handshake module 150 is connected to the neutral terminal N of the power interface. When the first switch 122 is in the attracted state, the handshake module 150 outputs the handshake success signal Enok when receiving the current generated by the voltage component V2 of the neutral terminal N of the power device 200. The control module 130 confirms that the power device 100 and the power device 200 have completed the power connection according to the handshake success signal Enok.

[0053] The first switch tube Q1 is turned off when the handshake signal Enry output by the control module 130 is not received, and the coil 121 of the relay is powered off, so that the first switch 122 and the second switch 123 are disconnected. When the first switch 122 and the second switch 123 are disconnected, the output cathode of the power supply module 110 is disconnected from the ground terminal PE of the power interface, and the power supply circuit of the detection voltage V1 is cut off, thereby realizing electrical isolation between the power device 100 and the power-consuming device 200.

[0054] See also Figure 3 and Figure 5 In one embodiment, the isolation module 120 further includes a current limiting resistor R11 and a bias resistor R12. The current limiting resistor R11 is connected in series with the control end of the first switch tube Q1 to provide current limiting protection for the first switch tube Q1. The bias resistor R12 is connected to the control end and the second end of the first switch tube Q1 to provide a bias voltage to the control end of the first switch tube Q1.

[0055] See also Figure 5 In one embodiment, the handshake module 150 includes a switch unit 151. A control end of the switch unit 151 is connected to the first switch 122 of the relay, and the switch unit 151 is turned on under the driving of the voltage component V2 to output a handshake success signal Enok.

[0056] In this embodiment, the switch unit 151 of the handshake module 150 draws power (e.g., 5V) from the power supply voltage of the power device 100. It is turned on under the drive of the voltage component V2 fed back by the power-consuming device 200, and outputs a handshake success signal Enok, so that the control module 130 confirms that the power connection between the power device 100 and the power-consuming device 200 is successfully established.

[0057] See also Figure 6 In one embodiment, the switch unit 151 includes a photocoupler U1 and a first current limiting resistor R1. The positive electrode of the light source of the photocoupler U1 constitutes the control end of the switch unit 151, coupled to the first switch 122 of the relay and the positive output electrode of the power supply module 110, the negative electrode of the light source of the photocoupler U1 is connected to the negative output electrode of the power supply module 110, the positive electrode of the light receiver of the photocoupler U1 is connected to the control module 130, the positive electrode of the light receiver of the photocoupler U1 is also connected to the second working power supply through the first current limiting resistor R1, and the negative electrode of the light receiver of the photocoupler U1 is grounded.

[0058] It is understandable that the second working power supply Vcc2 (e.g., 5V) can be generated by the internal power supply of the power device 100. When the power connection between the power device 100 and the power-consuming device 200 is successful, the current generated by the voltage component V2 formed at the neutral terminal N of the power-consuming device 200 passes through the first switch 122 of the relay and flows into the positive electrode of the light source of the photocoupler U1, so that the light source of the power coupler emits light. The light source emits light, so that the light receiver of the coupler is turned on, and the voltage of the positive electrode of the light receiver of the photocoupler U1 is pulled to 0 by the voltage of the second working power supply Vcc2, that is, the handshake success signal Enok is output to the control module 130. The control module 130 receives the handshake success signal Enok, confirming that the power device 100 and the power-consuming device 200 have completed the power connection through the power connection line.

[0059] In one embodiment, when the capacitance of the first capacitor CX1 and the second capacitor CY1 is small, the second capacitor CY1 cannot provide enough current to drive the switch unit 151. Figure 5 , the handshake module 150 is also provided with a self-locking unit 152. The self-locking unit 152 is connected between the control end of the switch unit 151 and the first switch 122 of the relay, and the self-locking unit 152 is also connected to the positive output electrode of the power supply module 110. The self-locking unit 152 is used to keep the detection voltage V1 turned on to the control end of the switch unit 151 under the drive of the voltage component V2, so that the switch unit 151 is turned on to keep outputting the handshake success signal Enok. Through the above-mentioned self-locking unit 152, after the voltage component V2 triggers the switch unit 151 to turn on, it no longer draws power from the second capacitor CY1, but draws power from the positive output electrode of the power supply module 110, thereby ensuring the stability of the handshake success signal Enok.

[0060] See also Figure 6 In one embodiment, the self-locking unit 152 includes a second switch tube Q2, a third switch tube Q3, a second current limiting resistor R11R2, a first voltage dividing resistor R3, a second voltage dividing resistor R4, a third voltage dividing resistor R5 and a fourth voltage dividing resistor R6.

[0061] The first end of the second current-limiting resistor R2 is connected to the first switch 122 of the relay, and the second end of the second current-limiting resistor R2 is connected to the first end of the first voltage-dividing resistor R3, the first end of the second voltage-dividing resistor R4, and the first conduction end of the second switch tube Q2. The second end of the first voltage-dividing resistor R3 is connected to the output negative electrode of the power supply module 110. The second end of the second voltage-dividing resistor R4 is connected to the control end of the third switch tube Q3. The second conduction end of the second switch tube Q2 is connected to the output positive electrode of the power supply module 110, and the control end of the second switch tube Q2 is connected to the first end of the third voltage-dividing resistor R5. The second end of the third voltage-dividing resistor R5 is connected to the first end of the fourth voltage-dividing resistor R6 and the first conduction end of the third switch tube Q3. The second end of the fourth voltage-dividing resistor R6 is connected to the output positive electrode of the power supply module 110, and the second conduction end of the third switch tube Q3 is connected to the control end of the switch unit 151, that is, the positive electrode of the light source of the photoelectric coupler U1.

[0062] In this embodiment, the second switch tube Q2 is a PNP transistor, and the third switch tube Q3 is an NPN transistor. When the capacitance of the first capacitor CX1 and the second capacitor CY1 is small, it is impossible to provide enough current to drive the third switch tube Q3, and the second switch tube Q2 is added to form an interlocking circuit together. When the third switch tube Q3 is turned on, the collector and base of the third switch tube Q3 are pulled down, so that the base and collector of the second switch tube Q2 are also continuously pulled down, so that the second switch tube Q2 is continuously turned on. The driving current of the third switch tube Q3 flows from the output positive electrode of the power supply module 110 through the second switch tube Q2 to ensure that the third switch tube Q3 no longer draws power from the second capacitor CY1 after being triggered, and the stability of the handshake success signal Enok is ensured.

[0063] If the power connection line between the power device 100 and the power device 200 is not successfully connected (for example, the power connection line is not inserted into the power device 200, or is inserted into the power device 200, but a part of the power connection line is broken), it is equivalent to the live terminal L, the neutral terminal N, and the ground terminal PE of the power interface being suspended. If the power device 100 and the power device 200 are not successfully connected, there is no first capacitor CX1 and the second capacitor CY1 to form a loop, and after the relay in the power device 100 is closed, there is no voltage to drive the third switch tube Q3 to turn on, and the level input from the optocoupler U1 to the control module 130 is continuously high, then the handshake success signal Enok cannot be established, and the control module 130 confirms that the power connection line is not connected.

[0064] In some embodiments, the power device 200 can sample the voltage component V2 of the detection voltage V1 between the live terminal L and the neutral terminal N of the power interface or the detection voltage V1 between the live terminal L and the ground terminal PE. The power device 200 can determine whether the hardware connection with the power device 100 is completed based on the sampled voltage component V2 of the detection voltage V1 or the detection voltage V1. At this time, the power device 100 will also make a judgment on the completion of the power connection with the power device 200. If the power connection line between the power device 100 and the power device 200 is not successfully connected, one of the power device 100 and the power device 200 cannot detect the signal, thereby determining that the handshake fails. In some embodiments, the handshake success signal Enok between the power device 100 and the power device 200 is confirmed by wireless communication. Only when both ends are determined to be successful can the power transmission between the power device 100 and the power device 200 be controlled.

[0065] In some embodiments, after the handshake between the power device 100 and the power-consuming device 200 is established, the control module 130 stops outputting the handshake signal Enry so that the relay controls the first switch 122 and the second switch 123 to be disconnected. At the same time, the control module 130 controls the power supply module 110 to stop outputting the detection voltage V1 to prevent the handshake circuit of the power device 100 from being fed back by the current output or received by the power device 100 on the power interface after the power device 100 is working.

[0066] In some embodiments, the power device 100 may be a generator, which may be a fuel generator, a gas generator, a dual-fuel generator, etc. The power-consuming device 200 may be a mobile energy storage device, a portable refrigeration device, etc. Below, the power device 100 is a fuel generator, and the power-consuming device 200 is an energy storage device to further illustrate the embodiments of the present application.

[0067] In one embodiment, the fuel generator can be connected to the energy storage device through a power line. When the energy storage device needs to be charged, the energy storage device broadcasts a charging demand instruction through its own wireless transmission module. When the fuel generator receives the charging demand instruction through its own wireless module, it will output a detection voltage V1 through the power line. When the fuel generator receives a handshake success signal Enok sent by the energy storage device through its own wireless module 140, or receives a handshake success signal Enok through the power line, it determines that the hardware connection with the energy storage device has been completed. Then the fuel generator will output the corresponding power to the energy storage device according to the charging demand instruction.

[0068] In one embodiment, the fuel generator can be connected to the energy storage device through a power line. When the fuel generator detects the power generation operation, it will output the detection voltage V1 through the power line. The power generation operation can be that the operator manually triggers the power generation button, or the fuel generator receives a trigger instruction wirelessly. When the fuel generator receives the handshake success signal Enok sent by the energy storage device through its own wireless module 140, or receives the handshake success signal Enok through the power line, it determines that the hardware connection with the energy storage device has been completed. Then the fuel generator will output the corresponding power to the energy storage device according to the charging demand instruction.

[0069] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A handshake circuit for an electric power device, characterized in that: The handshake circuit comprises: Power interface, used for power connection with electrical equipment; A power supply module, used for providing a detection voltage; an isolation module, connected between the power supply module and the power interface, and configured to apply the detection voltage to the power interface under the control of a handshake signal; A control module is connected to the isolation module and is used to output the handshake signal and receive a handshake success signal through the power interface or wirelessly; the handshake success signal is generated based on the detection voltage after a power connection is established between the power device and the power-consuming device.

2. The handshake circuit according to claim 1, characterized in that It also includes a wireless module, which is connected to the control module, and the control module is used to wirelessly interact with the power-consuming device through the wireless module.

3. The handshake circuit according to claim 1 or 2, characterized in that: The isolation module includes a first switch tube and a relay, the control end of the first switch tube is connected to the control module, and the coil of the relay is connected in series with the first switch tube and connected to a first working power supply; The first switch of the relay is connected between the output positive pole of the power supply module and the positive terminal of the power interface; The second switch of the relay is connected between the output negative pole of the power supply module and the negative pole terminal of the power interface.

4. The handshake circuit according to claim 1, characterized in that It also includes a handshake module, which is connected to the isolation module and the control module. The handshake module is used to receive the voltage component generated by the electrical equipment based on the detection voltage, and generate a handshake success signal according to the voltage component and output it to the control module.

5. The handshake circuit according to claim 4, characterized in that The isolation module comprises a first switch tube and a relay, the control end of the first switch tube is connected to the control module, and the coil of the relay is connected in series with the first switch tube to a first working power supply; The first switch of the relay is connected between the handshake module and the neutral terminal of the power interface, and transmits the voltage component when turned on; The second switch of the relay is connected between the output negative pole of the power supply module and the ground terminal of the power interface.

6. The handshake circuit according to claim 5, characterized in that The handshake module includes a switch unit, a control end of the switch unit is connected to the first switch of the relay, and the switch unit is turned on under the driving of the voltage component to output the handshake success signal.

7. The handshake circuit according to claim 6, characterized in that The switch unit includes a photoelectric coupler and a first current-limiting resistor. The positive electrode of the light source of the photoelectric coupler constitutes the control end of the switch unit and is coupled to the first switch of the relay. The negative electrode of the light source of the photoelectric coupler is connected to the output negative electrode of the power supply module. The positive electrode of the photoreceiver of the photoelectric coupler is connected to the control module. The positive electrode of the photoreceiver of the photoelectric coupler is also connected to the second working power supply through the first current-limiting resistor. The negative electrode of the photoreceiver of the photoelectric coupler is grounded.

8. The handshake circuit according to claim 6, characterized in that The handshake module also includes a self-locking unit, which is connected between the control end of the switch unit and the first switch of the relay. The self-locking unit is also connected to the power supply module. The self-locking unit is used to keep transmitting the detection voltage to the control end of the switch unit under the drive of the voltage component, so that the switch unit is turned on to keep outputting the handshake success signal.

9. The handshake circuit according to claim 8, characterized in that The self-locking unit includes a second switch tube, a third switch tube, a second current limiting resistor, a first voltage-dividing resistor, a second voltage-dividing resistor, a third voltage-dividing resistor and a fourth voltage-dividing resistor; The first end of the second current limiting resistor is connected to the first switch of the relay, the second end of the second current limiting resistor is connected to the first end of the first voltage-dividing resistor, the first end of the second voltage-dividing resistor and the first conduction end of the second switch tube, the second end of the first voltage-dividing resistor is connected to the output negative electrode of the power supply module, the second end of the second voltage-dividing resistor is connected to the control end of the third switch tube, the second conduction end of the second switch tube is connected to the output positive electrode of the power supply module, the control end of the second switch tube is connected to the first end of the third voltage-dividing resistor, the second end of the third voltage-dividing resistor is connected to the first end of the fourth voltage-dividing resistor and the first conduction end of the third switch tube, the second end of the fourth voltage-dividing resistor is connected to the output positive electrode of the power supply module, and the second conduction end of the third switch tube is connected to the control end of the switch unit.

10. An electric power device, characterized in that: A handshake circuit comprising the power equipment as claimed in any one of claims 1 to 9.

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