Intelligent charging and discharging device

Abstract

The invention discloses an intelligent charging and discharging device which comprises a discharging extension socket, a charging gun, a charging connector and a vehicle-mounted MCU control module. One end of the charging gun is connected with the vehicle-mounted MCU control module, and the other end is connected with a discharging extension socket or a charging connector; button modules are arranged on the surfaces of the charging connector and the discharging extension socket, are connected with self-locking switches and extend inwards, movable bases capable of moving in a reciprocating mode are arranged in the charging connector and the discharging extension socket, the bases are provided with jacking slopes abutting against the button modules, plug hook locks capable of moving synchronously are arranged on the side faces of the bases, and signal switch modules are arranged at the moving end points of the bases. The button is pressed down to push the movable base, the plug hook lock is driven to lock the charging gun, the signal switch module is triggered to be started, and a discharging or charging request signal is sent to the charging gun; a gun body MCU control module is arranged in the charging gun and is in communication connection with the vehicle-mounted MCU control module, the gun body MCU control module receives a signal and then sends the signal to the vehicle-mounted MCU control module, and the vehicle-mounted MCU control module starts a discharging or charging process according to the signal.

Description

Technical Field

[0001] The present invention relates to the field of charging and discharging technology, and in particular to an intelligent charging and discharging device. Background Art

[0002] Currently, traditional electrical control systems for bidirectional charging in new energy vehicles often utilize a single communication link design, resulting in issues such as insufficient communication connectivity. Specifically, the charging power strip and charging adapter can only transmit signals to the charging plug, lacking bidirectional authentication with the vehicle's MCU. This can lead to mischarging and misdischarging due to communication anomalies, posing a potential safety hazard.

[0003] In addition, the charging connector or discharge power strip needs to cooperate with the three-pin plug assembly of the charging gun to realize the charging and discharging functions, but most of the charging connectors or discharge power strips in the existing technology lack effective mechanical interlocking with the three-pin plug, which makes the three-pin plug easy to fall off accidentally during the discharge process, posing a risk of electric shock.

[0004] Therefore, there is an urgent need for an intelligent charging and discharging device that optimizes mechanical self-locking and electrical linkage control to improve the reliability and safety of the equipment. Summary of the Invention

[0005] The purpose of the present invention is to overcome the potential safety hazard of electric shock caused by the lack of mechanical interlocking and two-way communication verification during charging and discharging of existing new energy vehicles, and to provide an intelligent charging and discharging device.

[0006] After one end of the charging gun of the intelligent charging and discharging device is electrically connected to an external new energy vehicle (external energy storage device), the other end of the charging gun is inserted into the charging connector or discharge socket strip; after the insertion is completed, the button module is pressed, and the button module is locked by the self-locking switch and remains in the pressed state. During the pressing process of the button module, the abutting movable base is pushed to move, and the movable base drives the plug hook lock to move synchronously to the end point of the moving trajectory of the plug hook lock. At this time, the locking head of the plug hook lock is tightly buckled with the other end of the charging gun, fastening the connecting end of the charging gun to the charging connector or discharge socket strip to form a mechanical interlock, ensuring that the three-pin plug will not fall off the socket strip, avoiding the risk of electric shock; at the same time, a locking mechanism is provided at the end point of the moving trajectory of the plug hook lock. The signal switch module for electrical connection is squeezed when the plug hook lock moves to the end point. At this time, the signal switch module is successfully triggered to open, and triggers the sending of a discharge request signal or a charge request signal to the gun body MCU control module. After the gun body MCU control module receives the corresponding signal, it is transmitted to the vehicle-mounted end through the internal signal line of the charging gun. The vehicle-mounted end is provided with an on-board MCU control module. After receiving the corresponding signal, the on-board MCU control module identifies that it should currently be in a discharge or charging state, and then sends a discharge or charge permission signal to the gun body MCU control module. After receiving the discharge permission or permission signal, the gun body MCU control module completes the two-way identity authentication mechanism, and then controls the vehicle-mounted battery to supply power to the discharge socket, or controls the charging of the vehicle-mounted battery.

[0007] After use, press the button module again. At this time, the mobile base drives the plug hook lock to disengage from the connection end of the charging gun and the signal switch module to the initial position, disconnecting the mechanical interlock with the charging gun. At the same time, the signal switch module is reset and disconnected due to the loss of the squeeze of the plug hook lock, and the transmission of the discharge request signal and the request charging signal is terminated. After receiving this signal, the gun body MCU control module will cut off the discharge or power supply line, and synchronously transmit the signal to the on-board MCU control module. After receiving this signal, the on-board MCU control module immediately cuts off the line electrically connected to the battery pack, ensuring that the electrical connection can be cut off synchronously when the device is separated, solving the problem of not being able to quickly cut off the power when the connection is abnormal in the prior art, avoiding the safety hazards caused by live falling, and realizing dual safety protection of structure and electricity.

[0008] This application example provides an intelligent charging and discharging device, including: Discharge socket, charging gun and charging connector; One end of the charging gun is electrically connected to the external energy storage device, and the other end is electrically connected to the discharge socket or charging connector; The surface of the charging connector and the discharge socket is provided with a button module, which extends inward and is connected to a self-locking switch. A reciprocating movable base is also provided inside the charging connector and the discharge socket. The movable base is upwardly formed with a top supporting inclined surface that abuts against the button module. A synchronously movable plug hook lock is provided on the side of the movable base. A signal switch module triggered by the plug hook lock is provided at the end point of the moving track of the plug hook lock. When the button module remains in a depressed state, it pushes the movable base to move, thereby driving the plug hook lock to move to the end point of the track. The plug hook lock locks the charging gun and triggers the signal switch module to open, thereby sending a discharge or charge request signal to the charging gun; The charging gun is equipped with a gun body MCU control module, which is used to establish a connection with an external energy storage device for discharging or charging after receiving a discharge or charging request signal.

[0009] Furthermore, the signal switch module of the discharge socket includes RF1 resistor, RF2 resistor, two-position switch S5, CC line and PE line, and the charging gun is provided with CC line, PE line and RC4 resistor; The RF1 resistor is electrically connected to the PE line of the discharge socket, and the RF2 resistor is electrically connected to the CC line of the discharge socket. The RF1 resistor is connected in series with the RF2 resistor through the two-position switch S5; One end of the RC4 resistor is electrically connected to the CC line of the charging gun, and the other end is electrically connected to the PE line of the charging gun. The gun body MCU control module is electrically connected to the CC line and PE line in the charging gun.

[0010] Furthermore, the signal switch module of the charging connector includes the RF3 resistor, the RF4 resistor, the two-position switch S6, the CC line and the PE line, and the charging gun is provided with the L line, the N line and the RC1 resistor; The RF3 resistor is electrically connected to the PE line of the charging connector, the RF4 resistor is electrically connected to the CC line of the charging connector, and the RF3 resistor is connected in series with the RF4 resistor through the two-position switch S6; The gun body MCU control module is electrically connected to the L line and the N line respectively. The RC1 resistor and the RC4 resistor are connected in parallel. A switch S4 is provided on the parallel circuit. The switch S4 is electrically connected to the gun body MCU control module.

[0011] Furthermore, a CP circuit is provided in the charging gun, and a switch S1 is provided on the CP circuit. The switch S1 is electrically connected to the gun body MCU control module.

[0012] Furthermore, a K1 relay is provided on the L line, and a K2 relay is provided on the N line. Both the K1 relay and the K2 relay are electrically connected to the gun body MCU control module.

[0013] Furthermore, a bidirectional power supply is provided in the charging gun, the input end of the bidirectional power supply is electrically connected to the L line and the N line, and the output end is electrically connected to the K1 relay and the K2 relay.

[0014] Furthermore, the charging connector and the discharge power strip are provided with a socket, and the charging gun is provided with a three-pin plug. The socket is partially recessed to form a plug slot, and the three-pin plug is accommodated in the plug slot and connected to the socket; An opening is provided on the side of the plug slot for the lock head of the plug hook lock to extend out, and the three-pin plug is provided with a groove connected with the opening, and the lock head of the plug hook lock is connected with the groove through the opening in a concave-convex matching manner.

[0015] Furthermore, the button module includes a button and a slider, and a mounting base is provided inside the charging connector and the discharging socket, wherein the button, the slider and the self-locking switch are fixedly arranged in the mounting base in sequence from top to bottom.

[0016] Furthermore, the movable base, the plug lock hook and the signal switch module are arranged in the mounting base from left to right, wherein the left side of the movable base is partially bent upward to form a top supporting slope that abuts the slider, the right side of the movable base is fixedly connected to the plug hook lock, and the signal switch module is arranged at the end point of the moving track at the rightmost end of the plug hook lock.

[0017] Furthermore, it is characterized in that a base reset spring is arranged on the moving track of the movable base, and a hook lock reset spring is arranged on the moving track of the plug hook lock; One end of the base return spring is connected to the movable base, and the other end is connected to the mounting base; One end of the hook lock return spring is connected to the plug hook lock, and the other end is connected to the mobile base.

[0018] In summary, the present invention has the following beneficial effects compared with the prior art: To summarize, this device uses a mechanical interlocking structure to fasten the three-pin plug to the power strip to prevent it from accidentally falling off and avoid the risk of electric shock. At the same time, by using the gun body of the charging gun and the vehicle MCU as the transmission intermediary for requesting charging or discharging signals, it realizes two-way authentication between the signal switch module and the on-board MCU control module to control power supply or charging, avoiding the problems of incorrect charging and incorrect discharging caused by communication abnormalities, and further ensuring the safety and reliability of the charging and discharging process of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings: Figure 1 A schematic diagram of a discharge power strip provided by the present invention; Figure 2A schematic diagram of the button module, mounting base, and signal switch module provided by the present invention; Figure 3 An exploded view of the button module, mounting base, and signal switch module provided by the present invention; Figure 4 A schematic diagram showing that the discharge power strip provided by the present invention does not form a mechanical and electrical interlock with a three-pin plug; Figure 5 A schematic diagram of the mechanical and electrical interlocking between the discharge power strip and the three-pin plug provided by the present invention; Figure 6 A circuit diagram of the device provided by the present invention when in discharge mode; Figure 7 This is a circuit diagram of the device provided by the present invention when it is in charging mode.

[0020] Name of attached figure: 1-Discharge power strip; 2-Button; 3-Slider; 4-Self-locking switch; 5-Mobile base; 6-Plug hook lock; 7-Base return spring; 8-Hook lock return spring; 9-Mounting base; 10-Control circuit board; 11-Double switch S5 or S6; 12-Pogo pin; 13-Plug slot; 14-Opening; 15-Groove; 16-Three-pin plug; 17-Socket. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0024] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0025] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0026] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of the present invention.

[0027] In the following description, suffixes such as “module,” “component,” “assembly,” or “unit” are used only to facilitate the description of the present invention and have no specific meanings. Therefore, they can be used interchangeably.

[0028] The present invention will be further described in detail below through specific embodiments with reference to the accompanying drawings.

[0029] According to an embodiment of the present invention, please refer to Figures 1 to 5 The present invention provides an intelligent charging and discharging device, which includes: Discharge socket 1, charging gun and charging connector; One end of the charging gun is electrically connected to the external energy storage device, and the other end is electrically connected to the discharge socket 1 or the charging connector; The surface of the charging connector and the discharge socket 1 is provided with a button module, which extends inward and is connected to a self-locking switch 4. A reciprocating movable base 5 is also provided inside the charging connector and the discharge socket 1. The movable base 5 is upwardly formed with a top supporting slope that abuts against the button module. A synchronously movable plug hook lock 6 is provided on the side of the movable base 5. A signal switch module triggered by the plug hook lock 6 is provided at the end point of the moving trajectory of the plug hook lock 6. When the button module remains in a depressed state, it pushes the movable base 5 to move, thereby driving the plug hook lock 6 to move to the end point of the trajectory. The plug hook lock 6 locks the charging gun and triggers the signal switch module to open, thereby sending a discharge or charge request signal to the charging gun; The charging gun is provided with a gun body MCU control module, and the gun body MCU control module is used to establish a connection with an external energy storage device for discharging or charging after receiving a discharge or charging request signal.

[0030] When this embodiment is implemented, after one end of the charging gun of the intelligent charging and discharging device is electrically connected to the new energy vehicle (i.e., the external energy storage device), the other end of the charging gun is used to insert the charging connector or the discharge socket 1; after the insertion is completed, the button module is pressed, and the button module is locked by the self-locking switch 4 and remains in the pressed state. During the pressing process of the button module, the abutting movable base 5 is pushed to move, and the movable base 5 drives the plug hook lock 6 to move synchronously to the end point of the moving trajectory of the plug hook lock 6. At this time, the locking head of the plug hook lock 6 is tightly buckled with the other end of the charging gun, and the connecting end of the charging gun is fastened to the charging connector or the discharge socket 1 to form a mechanical interlock, thereby ensuring that the three-pin plug will not fall off from the socket, thereby avoiding the risk of electric shock; at the same time, a locking mechanism is also provided at the end point of the moving trajectory of the plug hook lock 6. There is a signal switch module electrically connected to the charging gun. When the plug hook lock 6 moves to the end point, the signal switch module is squeezed. At this time, the signal switch module is successfully triggered to open, and triggers the sending of a discharge request signal or a charge request signal to the gun body MCU control module. After the gun body MCU control module receives the corresponding signal, it is transmitted to the new energy vehicle end through the internal signal line of the charging gun. The vehicle-mounted end is provided with an on-board MCU control module. After receiving the corresponding signal, the on-board MCU control module identifies that it should be in a discharge or charging state, and then sends a discharge or charge permission signal to the gun body MCU control module. After receiving the discharge permission or permission signal, the gun body MCU control module completes the two-way identity authentication mechanism, and then controls the vehicle battery to supply power to the discharge socket 1, or controls the charging of the vehicle battery.

[0031] After use, press the button module again. At this time, the mobile base 5 drives the plug hook lock 6 to disengage from the connection end of the charging gun and the signal switch module and return to the initial position, disconnecting the mechanical interlock with the charging gun. At the same time, the signal switch module is reset and disconnected due to the loss of the squeeze of the plug hook lock 6, and the transmission of the discharge request signal and the request charging signal is terminated. After receiving this signal, the gun body MCU control module will cut off the power supply line and synchronously transmit the signal to the on-board MCU control module. After receiving this signal, the on-board MCU control module will immediately cut off the line electrically connected to the battery pack, ensuring that the electrical connection can be cut off synchronously when the device is separated, solving the problem of not being able to quickly cut off the power when the connection is abnormal in the prior art, avoiding the safety hazards caused by live shedding, and realizing dual safety protection of structure and electricity.

[0032] In one possible implementation, please refer to Figure 6 The signal switch module of the discharge socket 1 includes an RF1 resistor, an RF2 resistor, a two-position switch S511, a CC line and a PE line. The charging gun is provided with a CC line, a PE line and an RC4 resistor; The RF1 resistor is electrically connected to the PE line of the discharge socket 1, the RF2 resistor is electrically connected to the CC line of the discharge socket 1, and the RF1 resistor is connected in series with the RF2 resistor via a two-position switch S511; One end of the RC4 resistor is electrically connected to the CC line of the charging gun, and the other end is electrically connected to the PE line of the charging gun. The gun body MCU control module is electrically connected to the CC line and PE line in the charging gun.

[0033] When this embodiment is implemented, after one end of the charging gun is electrically connected to the new energy vehicle, the other end of the charging gun is inserted into the discharge socket 1. A control circuit board 10 is provided in the discharge socket 1. The CC line, PE line, RF1, RF2 and switch S5 in the discharge socket 1 are integrated on the control circuit board 10. Pogo-pins 12 are provided at the ends of the CC line and PE line in the discharge socket 1. Pogo-pins 12 extend from the ends to the outer surface of the discharge socket 1 and are respectively connected to the CC line and PE line of the three-pin plug. When the button module is pressed, the button module squeezes the double-position switch S511 to close. At this time, the resistance between the CC line and the PE line The original RC4 is changed to RF1, RF2 and RC4, and the resistance module composed of RF1 and RF2 in series is connected in parallel with RC4. Therefore, the equivalent resistance value of the CC line and the PE line has changed. The gun body MCU control module sends the monitored equivalent resistance value to the on-board MCU control module. After receiving the equivalent resistance value, the on-board MCU control module recognizes that it should be in a discharge state. Then, the on-board MCU control module sends a discharge permission signal to the gun body MCU control module and synchronously controls the line connected to the battery pack in the car body. After receiving the discharge permission signal, the gun body MCU control module turns on the power supply line in the gun body, thereby realizing the supply of electric energy in the battery pack of the car to the discharge socket 1.

[0034] In one possible implementation, please refer to Figure 7 The signal switch module of the charging connector includes an RF3 resistor, an RF4 resistor, a two-position switch S611, a CC line and a PE line. The charging gun is provided with an L line, an N line and an RC1 resistor; The RF3 resistor is electrically connected to the PE line of the charging connector, the RF4 resistor is electrically connected to the CC line of the charging connector, and the RF3 resistor is connected in series with the RF4 resistor via a two-position switch S611; The gun body MCU control module is electrically connected to the L line and the N line respectively. The RC1 resistor and the RC4 resistor are connected in parallel. A switch S4 is provided on the parallel circuit. The switch S4 is electrically connected to the gun body MCU control module.

[0035] When this embodiment is implemented, after one end of the charging gun is electrically connected to the new energy vehicle, the other end of the charging gun is inserted into the charging connector. A control circuit board 10 is provided in the charging connector. The CC line, PE line, RF3, RF4 and switch S6 in the charging connector are integrated on the control circuit board 10. Pogo-pins 12 are provided at the ends of the CC line and PE line in the charging connector. The Pogo-pins 12 extend from the ends to the outer surface of the charging connector and are connected to the CC line and PE line of the three-pin plug respectively. When the button module is pressed, the button module squeezes out The double-position switch S611 is closed. At the same time, when the gun body MCU control module detects that the voltage signals of the L line and the N line have changed, the control switch S4 is closed. At this time, since switches S6 and S4 are closed, the resistance between the CC line and the PE line changes from the original RC4 to RF3, RF4, RC1 and RC4, and the resistance module composed of RF3 and RF4 in series is connected in parallel with RC4, and RC1 is also connected in parallel with RC4. Therefore, the equivalent resistance value of the CC line and the PE line has changed. The gun body MCU control module will detect the new equivalent resistance value and send it to the on-board MCU control module.

[0036] In one possible implementation, please refer to Figure 7 The charging gun is also provided with a CP circuit, and a switch S1 is provided on the CP circuit. The switch S1 is electrically connected to the gun body MCU control module.

[0037] When this embodiment is implemented, when the gun body MCU control module detects that the voltage signals of the L line and the N line have changed, in addition to closing switch S4, the switch S1 is also closed synchronously. The gun body MCU control module will also synchronously send the PWM signal on the CP line to the vehicle-mounted MCU control module. After receiving the new equivalent resistance value and PWM signal, the vehicle-mounted MCU control module recognizes that it should be in the charging state. Then, the vehicle-mounted MCU control module sends a charging permission signal to the gun body MCU control module and synchronously controls the line connected to the battery pack in the vehicle body to be turned on. After receiving the charging permission signal, the gun body MCU control module turns on the power supply line (i.e., the L line and the N line) in the gun body, thereby charging the battery pack of the vehicle.

[0038] In one possible implementation, please refer to Figure 6 and 7 The L line is provided with a K1 relay, and the N line is provided with a K2 relay. Both the K1 relay and the K2 relay are electrically connected to the gun body MCU control module.

[0039] When this embodiment is implemented, when the gun body MCU control module receives the discharge or charge permission signal, it closes the K1 relay and the K2 relay to conduct the power supply line (i.e., the L line and the N line) in the gun body. In one possible implementation, please refer to Figure 6 and 7 The charging gun is also provided with a bidirectional power supply, the input end of the bidirectional power supply is electrically connected to the L line and the N line, and the output end is electrically connected to the K1 relay and the K2 relay.

[0040] When this embodiment is implemented, the DC / AC inverter function is activated through the bidirectional power supply to convert the DC power of the vehicle battery into 220V AC power, which is output to the discharge socket 1 through K1 / K2, or the AC / DC conversion function is activated to deliver external current to the vehicle battery pack for charging.

[0041] In one possible implementation, please refer to Figures 1 to 5 The charging connector and the discharge socket 1 are provided with a socket 17, and the charging gun is provided with a three-pin plug 16. The socket 17 is partially recessed around to form a plug slot 13. The three-pin plug 16 is accommodated in the plug slot 13 and connected to the socket 17; An opening 14 is provided on the side of the plug slot 13 for the lock head of the plug hook lock 6 to extend out, and the three-pin plug 16 is provided with a groove 15 connected to the opening 14. The lock head of the plug hook lock 6 is connected to the groove 15 through the opening 14 in a concave-convex matching manner.

[0042] During implementation of this embodiment, the plug slot 13, formed by a local depression around the socket 17, forms a matching concave-convex structure with the outer shape of the three-pin plug 16. When the three-pin plug 16 is inserted into the socket 17, the concave wall of the plug slot 13 guides the three-pin plug 16 into precise positioning. At the same time, the opening 14 on the side of the plug slot 13 provides a movable channel for the locking head of the plug hook 6. When the plug hook 6 moves to the end point with the movable base 5, the locking head can extend through the opening 14 and snap into the groove 15 of the three-pin plug 16, forming a mechanical interlock. This structure allows the three-pin plug 16 to be securely locked to the charging connector or the discharge power strip 1, avoiding the risk of electric shock if the three-pin plug 16 accidentally falls off. In addition, although the specific structure of the charging connector is not shown in the figure, the structure of the charging connector is basically the same as that of the discharge power strip 1. Compared with the discharge power strip 1, it has an additional three-pin plug for electrical connection to the external power grid to facilitate powering the vehicle battery pack. This structure is a conventional technical solution and will not be described in detail here.

[0043] In one possible implementation, please refer to Figures 1 to 5 The button module includes a button 2 and a slider 3. A mounting base 9 is provided inside the charging connector and the discharging socket 1. The button 2, the slider 3 and the self-locking switch 4 are fixedly arranged in the mounting base 9 from top to bottom.

[0044] During implementation of this embodiment, the slider 3 is fixed to the guide post of the mounting base 9. A self-locking switch 4 is fixedly connected to the bottom of the slider 3, and a button 2 is inverted on the top of the slider 3, forming a "button-slider-self-locking switch" linkage structure. When the button 2 is pressed, the button 2 drives the slider 3 to slide downward along the guide post. The bottom surface of the slider 3 abuts against the top support inclined surface of the movable base 5, thereby pushing the movable base 5 to move horizontally to the right, thereby driving the plug lock hook to move synchronously to the right to the end point to lock the three-pin plug of the charging gun and squeeze the signal switch module. At this time, the self-locking switch 4 triggers and locks the slider 3, keeping it in the depressed state, maintaining the stable position of the movable base 5 and the plug hook lock 6. When unlocking is required after use, the button 2 is pressed again. The self-locking switch 4 releases the slider 3 and the button 2 to return to their initial positions. At this time, the movable base 5 drives the plug hook lock 6 back to its initial position under the action of its own reset force, disengaging the three-pin plug and the signal switch module.

[0045] In one possible implementation, please refer to Figures 1 to 5 The movable base 5, the plug lock hook and the signal switch module are arranged in the mounting base 9 from left to right, wherein the left side of the movable base 5 is partially bent upward to form a top supporting slope abutting against the slider 3, the right side of the movable base 5 is fixedly connected to the plug hook lock 6, and the signal switch module is arranged at the end point of the moving track of the rightmost end of the plug hook lock 6.

[0046] When this embodiment is implemented, the movable base 5, the plug lock hook and the signal switch module are arranged in a linear layout on the left and right sides of the mounting base 9. The top holding bevel on the left side of the movable base 5 fits the bottom surface of the slider 3, and the right side is fixedly connected to the plug lock hook to form a linkage assembly. When the slider 3 is pushed downward by the button 2, the top holding bevel is subjected to force, causing the movable base 5 to drive the plug lock hook to move horizontally to the right. When the plug lock hook moves to the rightmost end, it squeezes the signal switch module to trigger signal transmission. Since the three are linearly linked on the same trajectory, the force transmission path is short and direct, ensuring the synchronization of mechanical interlocking and electrical triggering. This layout uses the internal space of the mounting base 9 to form a compact transmission chain, avoiding interference between components, while making the reciprocating movement trajectory of the movable base 5 more stable, thereby improving the reliability of the interlocking structure.

[0047] In one possible implementation, please refer to Figures 1 to 5 , a base reset spring 7 is arranged on the moving track of the movable base 5, and a hook lock reset spring 8 is arranged on the moving track of the plug hook lock 6; One end of the base return spring 7 is connected to the movable base 5, and the other end is connected to the mounting base 9; One end of the hook lock return spring 8 is connected to the plug hook lock 6 , and the other end is connected to the movable base 5 .

[0048] When this embodiment is implemented, when the self-locking switch 4 is locked, the base reset spring 7 and the hook lock reset spring 8 are in a compressed state. When the self-locking switch 4 is unlocked, the spring releases the elastic force to push the movable base 5 and the plug hook lock 6 to reset along the original trajectory, ensuring the reliability of the structure for repeated use.

[0049] In order to better understand the embodiment, the discharge process and the charge process of the present invention are further described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0050] Please refer to Figure 6 , is a discharge flow chart of the device provided in this embodiment, and the specific process is as follows: Step 1: Insert the charging gun into the vehicle (the vehicle is equipped with an on-board MCU control module. This is conventional technology and will not be elaborated on here).

[0051] In this step, because switch S4 is initially open, the only effective resistance between the CC and PE lines is resistor RC4, which has a value of 3.5 kΩ. The charger's MCU control module sends the detected equivalent resistance value of 3.5 kΩ to the onboard MCU control module. Upon receiving this value, the onboard MCU control module identifies the charger as being in a semi-connected state, meaning neither charging nor discharging is enabled. This means the charger's three-pin plug is not live, thus avoiding the risk of electric shock caused by a live plug without being inserted into a discharge power strip. This complies with the national standard (GB / T18487.1-2015) for charging and discharging communication and control logic.

[0052] Step 2: Insert the three-pin plug of the charging gun into the discharge socket and press the button.

[0053] In this step, pressing the button triggers the closure of the two-position switch S5. At this time, the resistance module composed of the RF1 resistor and the RF2 resistor is connected in parallel with the RC4 resistor module, where RF1 is 1.5KΩ and RF2 is 3.167KΩ. As a result, the equivalent resistance between the CC line and the PE line is 2KΩ. The equivalent resistance value of 2KΩ detected by the gun body MCU control module is transmitted to the on-board MCU control module, which then recognizes that it is currently in a discharge state. The circuit of the vehicle-end battery is provided with a switch S2, which is initially open. After the on-board MCU control module recognizes that it is currently in a discharge state, it controls switch S2 to close and simultaneously sends a discharge permission signal to the gun body MCU control module. After receiving the discharge permission signal, the gun body MCU control module controls the closure of the K1 and K2 relays. At the same time, the bidirectional power supply activates the DC / AC inverter function, converting the DC power of the vehicle battery into 220V AC power, which is output to the discharge socket through K1 / K2.

[0054] Step 3: Press the button again or unplug the three-pin plug (discharge terminated).

[0055] In this step, the button pops up to trigger the two-position switch S5 to disconnect, and the disconnection of switch S5 or the unplugging of the three-pin plug will disconnect the RF1 resistor and the RF2 resistor. At this time, the only effective resistance between the CC line and the PE line is the RC4 resistor. When the gun body MCU control module detects that the equivalent resistance value is 3.5KΩ, it controls the K1 and K2 relays and switch S3 to disconnect, and the bidirectional power supply stops inverting. In this way, even if the three-pin plug is unplugged from the discharge socket, it will not be energized, ensuring the safety of the user. At the same time, the gun body MCU control module will send the monitored equivalent resistance value of 3.5KΩ to the on-board MCU control module, and the on-board MCU control module controls the switch S2 to disconnect, thereby terminating the power supply to the discharge socket.

[0056] Please refer to Figure 7 , is a charging flow chart of the device provided in this embodiment, and the specific flow is as follows: Step 1: Insert the charging cable into the vehicle.

[0057] In this step, switch S4 is initially open. The only effective resistance between the CC and PE lines is RC4, which has a resistance of 3.5 kΩ. The gun MCU module detects the equivalent resistance of 3.5 kΩ and sends it to the vehicle MCU module. Upon receiving this value, the vehicle MCU module determines that the device is in a semi-connected state, meaning neither charging nor discharging is enabled.

[0058] Step 2: Insert the three-pin plug of the charging gun into the charging adapter connected to the power grid (taking 16A as an example) and press the power button.

[0059] In this step, pressing the power button triggers the closing of the two-position switch S6. At the same time, after the three-pin plug is connected to the power grid, the gun body MCU control module detects the power-on signals of the L line and the N line, and then controls the switch S4 of the RC1 resistor (0.844KΩ) to close, and synchronously controls the switch S1 to close. At this time, the effective resistance between the CC line and the PE line is the RF3 resistor, the RF4 resistor, the RC1 resistor and the RC4 resistor. Among them, the second resistor module composed of the RF3 (0.68KΩ) and RF4 (0.164KΩ) resistors in series is connected to the RC4 resistor. The RC1 and RC4 resistors are connected in parallel. Consequently, the equivalent resistance between the CC and PE lines detected by the gun MCU control module is 0.68KΩ. At the same time, the duty cycle of the PWM signal of the CP line is detected to be 75%. The equivalent resistance and PWM signal detected by the gun MCU control module are sent to the on-board MCU control module. After parsing the PWM signal and the equivalent resistance, the on-board MCU control module identifies the current 16A charging state and controls switch S2 to close, simultaneously sending a charging permission signal to the gun MCU control module. After receiving the signal and completing bidirectional authentication, the gun MCU control module controls the closure of relays K1 and K2. Simultaneously, the bidirectional power supply activates the AC / DC conversion function, allowing the grid AC power to be rectified and then charged to the on-board battery.

[0060] Step 3: Press the power button again or unplug the three-pin plug (charging terminated).

[0061] In this step, the button pops up to trigger the two-position switch S6 to disconnect. Regardless of whether the switch S6 is disconnected or the three-pin plug is pulled out, the RF3 resistor and the RF4 resistor will be disconnected. At this time, the gun body MCU control module detects the changes in the electrical signals on the L line and the N line, and then controls the switches S4 and S1 to disconnect. As a result, the only effective resistance between the CC line and the PE line is the RC4 resistor. When the gun body MCU control module detects that the equivalent resistance value is 3.5KΩ, it controls the K1 and K2 relays to disconnect, and the bidirectional power supply stops inverting. At the same time, the gun body MCU control module sends the monitored equivalent resistance value of 3.5KΩ to the on-board MCU control module. The on-board MCU control module controls the switch S2 to disconnect, terminates the power supply to the on-board battery, and the charging process ends.

[0062] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent charging and discharging device, characterized in that: include: Discharge socket, charging gun and charging connector; One end of the charging gun is electrically connected to the external energy storage device, and the other end is electrically connected to the discharge socket or charging connector; The surfaces of the charging connector and the discharge socket are provided with a button module, which extends inwardly and is connected to a self-locking switch. A reciprocating movable base is also provided inside the charging connector and the discharge socket, and a top supporting slope is formed upward on the movable base for abutting against the button module. A synchronously movable plug hook lock is provided on the side of the movable base, and a signal switch module triggered by the plug hook lock is provided at the end point of the moving track of the plug hook lock. When the button module remains in a depressed state, it pushes the movable base to move, thereby driving the plug hook lock to move to the end point of the track. The plug hook lock locks the charging gun and triggers the signal switch module to open, thereby initiating the sending of a discharge or charge request signal to the charging gun; The charging gun is provided with a gun body MCU control module, and the gun body MCU control module is used to establish a connection with an external energy storage device for discharging or charging after receiving a discharge or charging request signal.

2. The intelligent charging and discharging device according to claim 1, characterized in that: The signal switch module of the discharge socket includes RF1 resistor, RF2 resistor, two-position switch S5, CC line and PE line. The charging gun is provided with CC line, PE line and RC4 resistor; The RF1 resistor is electrically connected to the PE line of the discharge socket, the RF2 resistor is electrically connected to the CC line of the discharge socket, and the RF1 resistor is connected in series with the RF2 resistor via a two-position switch S5; One end of the RC4 resistor is electrically connected to the CC line of the charging gun, and the other end is electrically connected to the PE line of the charging gun. The gun body MCU control module is electrically connected to the CC line and PE line in the charging gun.

3. The intelligent charging and discharging device according to claim 2, characterized in that: The signal switch module of the charging connector includes RF3 resistor, RF4 resistor, two-position switch S6, CC line and PE line, and the charging gun is provided with L line, N line and RC1 resistor; The RF3 resistor is electrically connected to the PE line of the charging connector, the RF4 resistor is electrically connected to the CC line of the charging connector, and the RF3 resistor is connected in series with the RF4 resistor via a two-position switch S6; The gun body MCU control module is electrically connected to the L line and the N line respectively. The RC1 resistor and the RC4 resistor are connected in parallel. A switch S4 is provided on the parallel circuit. The switch S4 is electrically connected to the gun body MCU control module.

4. The intelligent charging and discharging device according to claim 3, characterized in that: The charging gun is further provided with a CP circuit, on which a switch S1 is provided, and the switch S1 is electrically connected to the gun body MCU control module.

5. The intelligent charging and discharging device according to claim 4, characterized in that: The L line is provided with a K1 relay, and the N line is provided with a K2 relay. Both the K1 relay and the K2 relay are electrically connected to the gun body MCU control module.

6. The intelligent charging and discharging device according to claim 5, characterized in that: A bidirectional power supply is also provided in the charging gun, the input end of the bidirectional power supply is electrically connected to the L line and the N line, and the output end is electrically connected to the K1 relay and the K2 relay.

7. The intelligent charging and discharging device according to claim 1, characterized in that: The charging connector and the discharge power strip are provided with sockets, and the charging gun is provided with a three-pin plug. The socket is partially recessed to form a plug slot, and the three-pin plug is accommodated in the plug slot and connected to the socket; An opening is provided on the side of the plug slot for the lock head of the plug hook lock to extend out, and the three-pin plug is provided with a groove connected to the opening, and the lock head of the plug hook lock is connected to the groove through the opening in a concave-convex matching manner.

8. The intelligent charging and discharging device according to claim 1, characterized in that: The button module includes a button and a slider. A mounting base is provided inside the charging connector and the discharging socket. The button, slider and self-locking switch are fixedly arranged in the mounting base in sequence from top to bottom.

9. The intelligent charging and discharging device according to claim 8, characterized in that: The movable base, plug lock hook and signal switch module are arranged in the installation base from left to right, wherein the left side of the movable base is partially bent upward to form a top supporting slope that abuts the slider, the right side of the movable base is fixedly connected to the plug hook lock, and the signal switch module is arranged at the end point of the moving track at the rightmost end of the plug hook lock.

10. The intelligent charging and discharging device according to claim 8, characterized in that: A base reset spring is arranged on the moving track of the movable base, and a hook lock reset spring is arranged on the moving track of the plug hook lock; One end of the base return spring is connected to the movable base, and the other end is connected to the mounting base; One end of the hook lock reset spring is connected to the plug hook lock, and the other end is connected to the movable base.

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