Source-grid-load-storage switching device and switching control method for realizing energy efficient and cooperative utilization

Abstract

The application relates to the field of source network load storage, in particular to a source network load storage switching device and a switching control method for realizing efficient collaborative utilization of energy, the method comprising the following steps: in response to the change of a load power state, a switching control signal is generated; based on the switching control signal, a driving part is started to provide switching power; the switching power is used to drive the transmission part to act, and linear motion of the transmission part is converted into rotary motion; when the motion of the transmission part exceeds a critical position, state switching is triggered; after the state switching is triggered, the elastic locking and the pre-stored elastic restoring force in the motion conversion part are used to drive the connector support to generate linear motion; through the linear motion of the connector support, the connecting male end fixed on the connector support is moved, the connecting male end is stably connected with the connecting female end connected to the load interface or the connecting female end connected to the load interface, so that the switching and locking of the electric energy path are realized, and the phenomenon of poor contact is avoided.

Description

Technical Field

[0001] This application relates to the field of energy source-grid-load-storage technology, specifically to a switching device and switching control method for achieving efficient and coordinated energy utilization. Background Technology

[0002] The source-grid-load-storage (PGS) model is a new power system operation mode that integrates power sources, grids, loads, and energy storage. It aims to address issues such as frequency and voltage stability, and power supply security caused by the large-scale integration of new energy sources through multi-factor collaborative optimization. One of the core technologies in this system is the ability to quickly and reliably switch the power path between grid supplying power to the load and grid charging of energy storage components.

[0003] Currently, most devices implementing this type of switching function employ electronic control schemes, such as using power electronic devices like relays, contactors, or solid-state switches to construct the switching circuit. These schemes primarily control the switching devices' on / off states by sending electrical signals. However, such electronically controlled switching schemes have some inherent technical drawbacks: First, the electromagnetic mechanisms and mechanical contacts within the core switching devices (such as relays and contactors) are prone to increased contact resistance due to arc erosion, material aging, or vibration after frequent operation and prolonged holding. This can even lead to poor contact or adhesion failure, directly affecting the continuity and reliability of the entire system's power supply, and also resulting in weak shock resistance under complex operating conditions. Second, to maintain the conducting state after switching, most electronic control devices need to continuously apply holding current, which not only leads to additional energy loss but may also cause coil heating, further accelerating device aging.

[0004] Therefore, the existing technology lacks a switching device that can avoid arc erosion and electromagnetic aging from the physical structure, achieve stable connection without continuous power supply, and adapt to complex working conditions. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides a source-grid-load-storage switching device and switching control method for achieving efficient and coordinated energy utilization, thereby improving the stability of the connection terminals.

[0006] In a first aspect, the present invention provides a source-grid-load-storage switching device for achieving efficient and coordinated energy utilization, comprising an energy storage component and a switching component disposed at one end of the energy storage component. The switching component is provided with an input interface, the energy storage component is provided with a load interface, and an energy path switching mechanism is disposed within the switching component. The energy path switching mechanism includes:

[0007] The drive unit is used to provide switching power;

[0008] A transmission unit, connected to the drive unit, is configured to convert the linear motion of the drive unit into rotational motion and trigger a state switch when the motion reaches a critical position.

[0009] The elastic latching and motion conversion unit, which is linked to the transmission unit, is configured to drive a connector support to generate linear motion by utilizing its own elastic restoring force after the transmission unit switches its trigger state.

[0010] The connector support is provided with a bidirectional conductive male terminal.

[0011] The energy storage component and the load interface are each provided with a corresponding female connection terminal;

[0012] Driven by the elastic latching and motion conversion unit, the connector support drives the male connector to generate linear motion, so that the male connector can stably engage with one of the two female connectors, thereby realizing the switching and locking of the power path.

[0013] By utilizing the elastic latching and the elastic restoring force of the motion conversion section to drive a stable connection between the male and female terminals, the poor contact problems caused by arc erosion and material aging in relays / contaminants are avoided. Furthermore, the absence of a continuously applied holding current prevents coil heating and additional energy consumption. The mechanical structure locks the power path, enhancing shock resistance under complex operating conditions and ensuring the continuity and reliability of the system's power supply.

[0014] As a preferred embodiment of the present invention, the driving unit includes at least one electric push cylinder fixed to the inner wall of the switching assembly, and a push block is fixedly connected to the output end of the electric push cylinder. The linear motion of the push block directly drives the swing plate through mechanical transmission, avoiding delays and interference in electrical signal transmission, and significantly improving the switching response speed and action accuracy.

[0015] As a preferred embodiment of the present invention, the transmission unit includes a swing plate rotatably mounted on the inner wall of the switching assembly and an arc-shaped limiting groove formed on the inner wall of the switching assembly. One end of the swing plate is fixedly connected to a working column; the end of the working column extends into and is slidably connected to the arc-shaped limiting groove.

[0016] The push block is located on the swing path of the working column, so that the electric push cylinder can push the working column to slide along the arc-shaped limiting groove and drive the swing plate to rotate.

[0017] The swing plate converts the linear motion of the electric push cylinder into rotational motion around the hinge point, and the arc-shaped limiting groove constrains the motion trajectory of the working column, ensuring that the rotation angle of the swing plate is precisely controllable. This mechanical transmission method does not require complex sensors, has a simple and reliable structure, and is suitable for high-frequency switching scenarios.

[0018] As a preferred embodiment of the present invention, the elastic locking and motion conversion part includes a working plate hinged to the bottom end of the swing plate, a tension spring connected between the swing plate and the working plate, and a motion conversion mechanism. The motion conversion mechanism includes a connecting groove opened at the bottom end of the working plate, a sliding block movably connected in the connecting groove, a moving rod fixed to the outer wall of the sliding block, and a limiting sleeve fixed to the inner wall of the switching assembly and sleeved outside the moving rod.

[0019] The movable rod constitutes the connector support, and the male connector is fixed to both ends of the movable rod.

[0020] The tension spring automatically changes its direction of tension after the working column passes the critical position, driving the working plate to rotate and converting the rotational motion into the linear motion of the moving rod through the connecting groove and sliding block. This design utilizes the elastic potential energy of the spring to achieve state self-locking, eliminating the need for continuous power supply to maintain the connection state. At the same time, the interlocking structure of the U-shaped female and male connectors ensures improved contact stability.

[0021] As a preferred embodiment of the present invention, the electric push cylinder is provided in two sets, the two sets of electric push cylinders are symmetrical about the swing center of the swing plate, and the push block at the front end of each electric push cylinder is respectively located on the swing path on both sides of the working column.

[0022] Two sets of electric push cylinders are symmetrically arranged about the center of the swing plate. When the working column is located on both sides of the swing path, the push cylinder on the corresponding side drives the switching. This redundant design allows the system to maintain basic functions even if a single push cylinder fails, improving the system's fault tolerance and making it particularly suitable for scenarios with extremely high power supply reliability requirements.

[0023] As a preferred embodiment of the technical solution of the present invention, the female connector is U-shaped.

[0024] The U-shaped structure upgrades traditional point contact to surface contact through a three-point contact design (two side walls + bottom surface). The increased contact area, combined with the continuous preload of the tension spring, allows the male connection terminal to maintain the required contact resistance under vibration conditions, solving the problem of intermittent disconnection caused by vibration in traditional contacts.

[0025] As a preferred embodiment of the present invention, the device further includes a control box, which is installed on the top of the energy storage assembly and electrically connected to the electric push cylinder.

[0026] The control circuit for the electric push cylinder is integrated into the control box on top of the battery pack, shortening the signal transmission distance and reducing electromagnetic interference. Simultaneously, the modular design physically isolates the control unit from the actuator, facilitating maintenance and upgrades.

[0027] Secondly, the present invention also provides a switching control method for the device described in the first aspect, comprising the following steps:

[0028] S1. In response to changes in the load's power consumption status, a switching control signal is generated;

[0029] S2. Based on the switching control signal, start the drive unit to provide a switching power; use the switching power to drive the transmission unit to convert the linear motion of the transmission unit into rotational motion;

[0030] S3. When the movement of the transmission unit exceeds a critical position, a state switch is triggered.

[0031] S4. After the state switch is triggered, the elastic restoring force pre-stored in the elastic latch and motion conversion section is used to drive the connector support to generate linear motion.

[0032] S5. Through the linear movement of the connector support, the male connector fixed on the connector support moves, so that the male connector can stably engage with either the female connector connected to the energy storage component or the female connector connected to the load interface, thereby realizing the switching and locking of the power path.

[0033] By employing a four-step method—state detection, power triggering, critical position identification, and elastic locking—the traditional continuous power supply of the electronic control scheme is improved to instantaneous triggering and mechanical self-locking. Critical position identification ensures the working column accurately crosses the midpoint, avoiding partial switching states.

[0034] As a preferred embodiment of the technical solution of the present invention, step S2 includes:

[0035] Based on the switching control signal, at least one electric push cylinder is activated, causing the push block at the output end of the electric push cylinder to produce linear motion.

[0036] The pusher blocks push a working column, forcing the working column to slide along a preset arc-shaped limiting groove, and causing the swing plate fixedly connected to the working column to rotate around its hinge point.

[0037] The critical position mentioned in S3 refers to the midpoint of the movement trajectory of the working column in the arc-shaped limiting groove; when the working column is pushed past the midpoint, the direction of the tension force of the tension spring in the elastic locking and motion conversion part on a working plate is reversed.

[0038] The critical position is set at the midpoint of the arc-shaped groove. When the pusher pushes the working column past the midpoint, the tension of the spring automatically reverses, driving the working plate to rotate rapidly. This critical triggering design based on mechanical structure offers improved response speed compared to electronic sensor solutions, requires no calibration, and has stronger environmental adaptability.

[0039] As a preferred embodiment of the technical solution of the present invention, in S4, the step of driving the connector support to generate linear motion specifically includes:

[0040] The elastic restoring force of the tension spring drives the working plate to rotate;

[0041] The rotation of the working plate is converted into linear motion of the sliding block through the cooperation of the connecting groove at the bottom and a sliding block;

[0042] The sliding block drives a moving rod to move linearly along a limiting sleeve, and the moving rod constitutes the connector support.

[0043] The connecting groove and sliding block at the bottom of the working plate form a slider-crank mechanism, which efficiently converts rotary motion into linear motion of the moving rod. By optimizing the radius of curvature of the connecting groove (R=15mm), the motion conversion efficiency reaches 98%. At the same time, the guiding design of the limit sleeve ensures that the moving rod's movement deviation is <0.1mm, guaranteeing precise docking of the male connection end.

[0044] The drive unit includes two sets of electrically driven cylinders symmetrical about the swing center of the transmission unit; the step of starting the drive unit based on the switching control signal includes: selectively starting one set of the electrically driven cylinders according to the target switching direction.

[0045] After the male connector and the female connector are engaged, the contact pressure between them is maintained by the elastic restoring force of the elastic latch and motion conversion part, and there is no need to continuously supply power to the drive part during the engagement state.

[0046] As can be seen from the above technical solutions, this application has the following advantages: the connection between the male and female terminals is driven and maintained by the elastic latching and the elastic restoring force of the motion conversion part, rather than by electromagnetic force. This fundamentally avoids problems such as arc erosion and electromagnetic aging, enabling the device to maintain low contact resistance and connection reliability even under frequent switching and long-term operation, with a lifespan far exceeding that of electronic control devices.

[0047] Because the connection is maintained entirely by the mechanical tension of the spring and the self-locking effect of the mechanism, the drive unit can be completely de-energized once the switching is complete, without any holding current. This completely eliminates the problem of continuous coil heating and energy consumption in the electronic control scheme, which not only saves energy but also improves the thermal safety and overall energy efficiency of the system.

[0048] The continuous elastic pressure provided by the elastic latching and motion conversion unit acts directly on the electrical connection interface, ensuring the contact pressure between the male connector and the "U"-shaped female connector. This mechanical locking method effectively prevents poor contact caused by loosening when facing complex working conditions and mechanical vibrations, improving the system's anti-interference capability and stability.

[0049] The arc-shaped limiting groove in the transmission unit works in conjunction with the working column. When the mechanism passes the critical point, it quickly switches and locks into the new state under the drive of the tension spring. This switching mechanism is decisive and accurate, avoiding intermediate states or jitter problems that may occur in the electronic control system. Attached Figure Description

[0050] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0052] Figure 2 This is a schematic diagram of the switching component structure of the present invention;

[0053] Figure 3 This is a schematic diagram of the tension spring connection structure of the present invention;

[0054] Figure 4 This is a schematic diagram of the male and female connector structures of the present invention;

[0055] Figure 5 This is a flowchart illustrating the method provided in an embodiment of the present invention.

[0056] In the diagram, 1. Energy storage component; 2. Control box; 3. Switching component; 301. Input interface; 4. Swing plate; 5. Working column; 6. Electric push cylinder; 7. Push block; 8. Tension spring; 9. Working plate; 10. Connecting groove; 11. Sliding block; 12. Moving rod; 13. Limiting sleeve; 14. Male connection terminal; 15. Female connection terminal; 16. Load interface. Detailed Implementation

[0057] To make the purpose, features, and advantages of this application more apparent and understandable, specific embodiments and accompanying drawings will be used to clearly and completely describe the technical solution protected by this application. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this application and in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0059] like Figure 1-4 As shown, this embodiment of the invention provides a source-grid-load-storage switching device for efficient and coordinated energy utilization, including an energy storage component 1 and a switching component 3 disposed at one end of the energy storage component 1. The switching component 3 is provided with an input interface 301, and the energy storage component 1 is provided with a load interface 16. An energy path switching mechanism is disposed within the switching component 3, and the energy path switching mechanism includes:

[0060] The drive unit is used to provide switching power;

[0061] A transmission unit, connected to the drive unit, is configured to convert the linear motion of the drive unit into rotational motion and trigger a state switch when the motion reaches a critical position.

[0062] The elastic latching and motion conversion unit, which is linked to the transmission unit, is configured to drive a connector support to generate linear motion by utilizing its own elastic restoring force after the transmission unit switches its trigger state.

[0063] The connector support is provided with a bidirectional conductive male terminal 14.

[0064] The energy storage component 1 and the load interface 16 are respectively provided with a corresponding female terminal 15;

[0065] Driven by the elastic latching and motion conversion unit, the connector support drives the male connector 14 to generate linear motion, so that the male connector 14 stably engages with one of the two female connectors 15, thereby realizing the switching and locking of the power path.

[0066] In some embodiments, the drive unit includes at least one electric push cylinder 6 fixed to the inner wall of the switching assembly 3, and the output end of the electric push cylinder 6 is fixedly connected to a push block 7.

[0067] In some embodiments, the transmission unit includes a swing plate 4 rotatably mounted on the inner wall of the switching assembly 3 and an arc-shaped limiting groove formed on the inner wall of the switching assembly 3. One end of the swing plate 4 is fixedly connected to a working column 5; the end of the working column 5 extends into and is slidably connected to the arc-shaped limiting groove.

[0068] The push block 7 is located on the swing path of the working column 5, so that the electric push cylinder 6 can push the working column 5 to slide along the arc-shaped limiting groove and drive the swing plate 4 to rotate through the push block 7.

[0069] In some embodiments, the elastic locking and motion conversion part includes a working plate 9 hinged to the bottom end of the swing plate 4, a tension spring 8 connected between the swing plate 4 and the working plate 9, and a motion conversion mechanism. The motion conversion mechanism includes a connecting groove 10 opened at the bottom end of the working plate 9, a sliding block 11 movably connected in the connecting groove 10, a moving rod 12 fixed to the outer wall of the sliding block 11, and a limiting sleeve 13 fixed to the inner wall of the switching assembly 3 and sleeved on the outside of the moving rod 12.

[0070] The movable rod 12 constitutes the connector support, and the male connector 14 is fixed to both ends of the movable rod 12.

[0071] In some embodiments, the electric push cylinder 6 drives the push block 7 to push the working column 5, causing the swing plate 4 to rotate. When the rotation exceeds a critical position, the elastic restoring force of the tension spring 8 drives the working plate 9 to rotate. The rotation of the working plate 9 is converted into the linear motion of the moving rod 12 along the limiting sleeve 13 through the motion conversion mechanism, thereby causing the male connecting end 14 to stably engage with one of the two female connecting ends 15.

[0072] In some embodiments, two sets of electric push cylinders 6 are provided, with the two sets of electric push cylinders 6 symmetrical about the swing center of the swing plate 4, and the push block 7 at the front end of each electric push cylinder 6 is respectively located on the swing path on both sides of the working column 5. The swing center is the hinge point between the swing plate 4 and the switching component 3, that is, the two sets of electric push cylinders 6 are symmetrical about the hinge point between the swing plate 4 and the switching component 3.

[0073] In some embodiments, the female connector 15 is U-shaped.

[0074] This invention also provides a source-grid-load-storage control device for achieving efficient and coordinated energy utilization, including an energy storage component 1. A control box 2 is mounted on the top of the energy storage component 1. A switching component 3 is fixedly connected to one end of the energy storage component 1. An input interface 301 is mounted on the top of the switching component 3. A swing plate 4 is rotatably connected to the inner wall of the switching component 3. A working column 5 is fixedly connected to one end of the swing plate 4. An electric push cylinder 6 is provided on one side of the swing plate 4. A push block 7 is fixedly connected to the output end of the electric push cylinder 6. The outer wall of the swing plate 4 is hinged. There is a tension spring 8, and the bottom end of the tension spring 8 is connected to a working plate 9 that is hinged to the bottom end of the swing plate 4. The bottom end of the working plate 9 is provided with a connecting groove 10. A sliding block 11 is movably connected in the groove of the connecting groove 10. A moving rod 12 is fixedly connected to the outer wall of the sliding block 11. A limiting sleeve 13 that is fixedly connected to the inner wall of the switching component 3 is sleeved on the outside of the moving rod 12. Both ends of the moving rod 12 are fixedly connected to a male connection end 14. A female connection end 15 is fitted into the outer wall of the male connection end 14. A load interface 16 is fixedly connected to the outer wall of the energy storage component 1.

[0075] Based on the above structure, when the load power consumption is high, the male terminal 14 is connected to the female terminal 15 of the load interface 16, so that the power grid continuously supplies power to the load. When the load power consumption is low, the push block 7 moves to drive the swing plate 4 to rotate around the hinge point of the swing plate 4 and the working plate 9. At the same time, the swing plate 4 drives the working column 5 at one end to move along the limiting groove opened in the inner wall of the switching assembly 3. The working column 5 is set to facilitate manual switching operation (e.g., Figure 2 and Figure 3 As shown, when the working column 5 moves to the other side of the hinge joint between the swing plate 4 and the working plate 9, the working plate 9 is rotated by the tension of the tension spring 8. The rotation of the working plate 9 drives the moving rod 12 on the outer wall of the sliding block 11 to slide along the groove of the limiting sleeve 13 through the connecting groove 10. The sliding rod 12 drives the male end 14 to connect with the female end 15 of the energy storage component 1, storing excess power in the energy storage component 1. The tension of the tension spring 8 helps to improve the stability of the connection between the male end 14 and the female end 15, avoiding poor contact.

[0076] In this embodiment of the invention, two sets of electric push cylinders 6 are provided, and the two sets of electric push cylinders 6 are symmetrical about the swing center of the swing plate 4. By providing two sets of electric push cylinders 6, it is convenient to switch the connection between the male terminal 14 and the female terminal 15 of the energy storage component 1 and the load interface 16.

[0077] In one embodiment, the working plate 9 forms a swing structure with the switching assembly 3 via the swing plate 4 and the tension spring 8, and the swing center of the working plate 9 coincides with the swing center of the swing plate 4. The movement of the push block 7 drives the swing plate 4 to rotate, and the rotation of the swing plate 4 drives the working plate 9 to rotate through the tension spring 8, thereby realizing the rotation operation of the working plate 9.

[0078] In one embodiment, such as Figure 4 As shown, the rotation of the working plate 9 drives the moving rod 12 on the outer wall of the sliding block 11 to slide along the groove of the limiting sleeve 13 through the connecting groove 10, thereby realizing the stable reciprocating sliding operation of the moving rod 12.

[0079] In one embodiment, the female connector 15 and the male connector 14 are located on the same straight line. In this embodiment, it is convenient for the movable rod 12 to slide and connect the male connector 14 and the female connector 15.

[0080] In one embodiment, the female connector 15 is U-shaped.

[0081] In this embodiment, by setting a "U"-shaped female connector 15, it is beneficial to improve the stability of the connection between the male connector 14 and the female connector 15.

[0082] In one embodiment, the female connector 15 is provided with two sets, and the two sets of female connectors 15 are electrically connected to the energy storage component 1 and the load interface 16, respectively.

[0083] In this embodiment, when the load power consumption is high, the power grid continuously supplies power to the load; when the load power consumption is low, the excess power is stored in the energy storage component 1.

[0084] In this embodiment, the source-grid-load-storage control device for efficient energy utilization operates as follows: First, when the load power consumption is high, the male terminal 14 is connected to the female terminal 15 of the load interface 16, allowing the power grid to continuously supply power to the load. When the load power consumption is low, the electric push cylinder 6 pushes the push block 7. The movement of the push block 7 causes the swing plate 4 to rotate around the hinge point of the swing plate 4 and the working plate 9. At the same time, the swing plate 4 causes the working column 5 at one end to move along the limiting groove opened in the inner wall of the switching component 3. The working column 5 facilitates manual switching operations. When the working column 5 moves to the other side of the hinge point of the swing plate 4 and the working plate 9, the tension of the tension spring 8 causes the working plate 9 to rotate. The rotation of the working plate 9 causes the moving rod 12 on the outer wall of the sliding block 11 to slide along the groove of the limiting sleeve 13 through the connecting groove 10. The sliding rod 12 causes the male terminal 14 to connect with the female terminal 15 of the energy storage component 1, storing the excess power in the energy storage component 1, thus realizing the function of efficient, stable and sustainable utilization of grid power.

[0085] By setting a tension spring, when the load power consumption is high, the male terminal connects to the female terminal of the load interface, allowing the power grid to continuously supply power to the load. When the load power consumption is low, the push block moves, causing the swing plate to rotate around the hinge point between the swing plate and the working plate. At the same time, the swing plate moves one end of its working column along the limiting groove opened in the inner wall of the switching component. The working column facilitates manual switching operation. When the working column moves to the other side of the hinge point between the swing plate and the working plate, the tension spring itself drives the working plate to rotate. The rotation of the working plate drives the moving rod on the outer wall of the sliding block to slide along the groove of the limiting sleeve plate through the connecting groove. The sliding rod drives the male terminal to connect to the female terminal of the energy storage component, storing excess power in the energy storage component. The tension spring itself helps to improve the stability of the connection between the male and female terminals and avoid poor contact.

[0086] Figures 1-4 Combination Figure 5 As shown, this embodiment of the invention also provides a switching control method for the device described in the above embodiments. The switching device includes a battery storage component 1, a switching component 3, a control box 2, and an energy path switching mechanism. The energy path switching mechanism includes a drive unit (two sets of electric push cylinders 6 and push blocks 7), a transmission unit (swing plate 4, arc-shaped limit groove, and working column 5), and an elastic latching and motion conversion unit. The moving rod 12 is provided with male connecting ends 14 at both ends. The battery storage component 1 and the load interface 16 are respectively provided with U-shaped female connecting ends 15. The control box 2 is electrically connected to the electric push cylinders 6. The specific steps of the switching control method are as follows:

[0087] S1. In response to changes in the load's power consumption status, a switching control signal is generated;

[0088] A current detection module and a voltage detection module are integrated inside the control box 2. The detection probe of the current detection module is connected in series to the circuit between the load interface 16 and the external load, and the detection probe of the voltage detection module is connected in parallel across the two ends of the load interface 16. The current and voltage values ​​of the load are collected in real time, with data collected every 100ms, and the collected current and voltage data are transmitted to the microprocessor inside the control box 2. In this embodiment of the invention, the current detection module and the voltage detection module are implemented using existing module structures.

[0089] The microprocessor, based on the received current and voltage data, uses a formula... P = UI (in P For load power, U This is the load voltage. I Calculate the real-time load power (based on the load current). Two power thresholds are preset: a high power threshold and a low power threshold. P 1=800 W With low power thresholdP 2=300 W When the calculated real-time load power is greater than 5 times consecutively. P When the load is at level 1, it is determined that the load is in a high power consumption state; when the real-time power of the load is less than 1 for 5 consecutive times... P At time 2, the load is determined to be in a low power consumption state.

[0090] If the load switches from a high power consumption state to a low power consumption state, the microprocessor generates a switching control signal for switching from grid power to energy storage. This signal includes a command to activate the electric push cylinder 6 corresponding to the bus terminal 15 connected to the load interface 16, the cylinder extension length (set to 50mm), and the action time (set to 2s). If the load switches from a low power consumption state to a high power consumption state, a switching control signal for switching from grid power to load power supply is generated. This signal includes a command to activate the electric push cylinder 6 corresponding to the bus terminal 15 connected to the energy storage component 1, the cylinder extension length (50mm), and the action time (2s). The generated switching control signal is sent to the control unit of the electric push cylinder 6 through the signal transmission module in the control box 2.

[0091] S2. Based on the switching control signal, start the drive unit to provide a switching power; use the switching power to drive the transmission unit to convert the linear motion of the transmission unit into rotational motion;

[0092] After receiving the switching control signal, the control unit of the electric push cylinder 6 first verifies the signal. Once the signal format is correct and the instruction content is complete, it sends a start signal to the motor of the electric push cylinder 6. Upon receiving the start signal, the motor drives the internal lead screw to rotate, which in turn drives the piston rod of the push cylinder to extend. Taking the grid power to energy storage switching as an example, when the electric push cylinder 6 closest to the load interface 16 is started, the piston rod drives the push block 7 to extend in a straight line at a speed of 5 mm / s until the extension length reaches 50 mm. The entire extension process lasts 2 seconds, consistent with the action time set by the switching control signal.

[0093] During its extension, the end of push block 7 furthest from electric push cylinder 6 contacts the outer wall of working column 5. Since the end of working column 5 extends into the arc-shaped limiting groove on the inner wall of switching assembly 3, and the trajectory of the arc-shaped limiting groove is centered on the hinge point between swing plate 4 and switching assembly 3, as push block 7 continues to push working column 5, working column 5 slides along the trajectory of the arc-shaped limiting groove. The sliding speed matches the extension speed of push block 7, remaining at 5 mm / s. Simultaneously, working column 5 slides, causing the swing plate 4, which is fixedly connected to it, to rotate around the hinge point, converting the linear motion of push block 7 into the rotational motion of swing plate 4. The limiting effect of the arc-shaped limiting groove on working column 5 ensures accurate rotation angle of swing plate 4, with the maximum rotation angle set at 60°.

[0094] S3. When the movement of the transmission unit exceeds a critical position, a state switch is triggered.

[0095] A critical position marker is marked on the inner wall of the arc-shaped limiting groove of the switching component 3. This critical position is the midpoint of the movement trajectory of the working column 5 within the arc-shaped limiting groove. By measuring the arc length of the arc-shaped limiting groove, the distance between the midpoint and both ends of the arc-shaped limiting groove is calculated to be 80mm, and this midpoint is set as the critical position. Simultaneously, a position sensor is installed on the side of the working column 5 closest to the inner wall of the arc-shaped limiting groove. The position sensor is electrically connected to the microprocessor of the control box 2, which detects the position of the working column 5 within the arc-shaped limiting groove in real time and transmits the position data to the microprocessor. The microprocessor receives the position data transmitted by the position sensor. When it detects that the sliding distance of the working column 5 within the arc-shaped limiting groove exceeds 80mm (i.e., exceeding the critical position), it sends a state switching trigger signal to the elastic latching and motion conversion unit. At this time, because the working column 5 exceeds the critical position, the rotation direction of the swing plate 4 causes the tension state of the tension spring 8 to change. The tension direction of the tension spring 8 on the working plate 9 changes from hindering the working plate 9 from rotating towards the energy storage component 1 to driving the working plate 9 to rotate towards the energy storage component 1, thus completing the state switching trigger.

[0096] S4. After the state switch is triggered, the elastic restoring force pre-stored in the elastic latch and motion conversion section is used to drive the connector support to generate linear motion.

[0097] After receiving the state switching trigger signal, the elastic latching and motion conversion unit starts to release the elastic restoring force of the tension spring 8. The tension spring 8 is made of stainless steel and the elastic coefficient is set to 8 N / mm. In the initial state, the tension of the tension spring 8 is 20 mm. When releasing the elastic restoring force, the tension of the tension spring 8 gradually decreases, generating a pulling force in the direction of rotation of the working plate 9. This pulling force drives the working plate 9 to rotate around the hinge point between it and the swing plate 4, with a rotational angular velocity of 10° / s.

[0098] When the working plate 9 rotates, the connecting groove 10 at its bottom rotates synchronously with it. The inner wall of the connecting groove 10 is provided with a PTFE lubricating layer. The sliding block 11, which is movably connected within the groove, is driven by the connecting groove 10 and simultaneously subjected to the thrust from the side wall of the connecting groove 10 and the low frictional resistance of the lubricating layer. Since the trajectory of the connecting groove 10 is arc-shaped, the sliding block 11 converts the rotational motion of the working plate 9 into its own linear motion in the horizontal direction, moving towards the energy storage assembly 1 at a speed of 4 mm / s. The sliding block 11 and the moving rod 12 are integrally formed. When the sliding block 11 moves linearly, it drives the moving rod 12 to move synchronously. The limiting sleeve 13 sleeved on the outside of the moving rod 12 limits the direction of movement of the moving rod 12, ensuring that the moving rod 12 only moves linearly in the horizontal direction, preventing deviation. The moving rod 12, as a connector support, maintains the same speed as the sliding block 11, which is 4 mm / s.

[0099] S5. Through the linear movement of the connector support, the male connector 14 fixed on the connector support moves, so that the male connector 14 can be stably engaged with either the female connector 15 connected to the energy storage component 1 or the female connector 15 connected to the load interface 16, thereby realizing the switching and locking of the power path.

[0100] When the moving rod 12 moves linearly in the horizontal direction, the fixed male connectors 14 at both ends move synchronously with the moving rod 12. The outer wall of the male connector 14 is covered with a conductive silicone layer with a thickness of 0.8 mm, and the end away from the moving rod 12 has a 30° guide slope. When the moving rod 12 moves towards the energy storage component 1, the male connector 14 near the energy storage component 1 first contacts the corresponding "U"-shaped female connector 15 of the energy storage component 1 through the guide slope. The guide slope guides the male connector 14 to accurately insert into the groove of the female connector 15. As the moving rod 12 continues to move, the male connector 14 is completely inserted into the groove of the female connector 15. The conductive silicone layer is compressed and deformed, filling the gap between the male connector 14 and the female connector 15, ensuring that the two are in close contact.

[0101] When the male terminal 14 and the female terminal 15 are fully engaged, the tension spring 8 maintains a certain amount of tension (set to 5mm), generating a continuous pulling force on the working plate 9. Through the transmission structure, the moving rod 12 is kept in its current position, thereby maintaining a stable pressure (set to 10N) between the male terminal 14 and the female terminal 15, thus locking the power path. At this time, the power input from the grid is transmitted to the energy storage component 1 through the input interface 301, the internal circuit of the switching component 3, and the junction of the male terminal 14 and the female terminal 15, completing the storage of excess power. If the power is switched from grid power to load power supply, the male terminal 14 and the corresponding female terminal 15 of the load interface 16 are engaged and locked, and the grid power is transmitted to the external load, realizing the switching and locking of the power path.

[0102] In some embodiments, step S2 includes:

[0103] Based on the switching control signal, at least one electric push cylinder 6 is activated, causing the push block 7 at the output end of the electric push cylinder 6 to produce linear motion.

[0104] The pusher 7 pushes a working column 5, forcing the working column 5 to slide along a preset arc-shaped limiting groove, and causing the swing plate 4, which is fixedly connected to the working column 5, to rotate around its hinge point.

[0105] The critical position mentioned in S3 refers to the midpoint of the movement trajectory of the working column 5 in the arc-shaped limiting groove; when the working column 5 is pushed past the midpoint, the direction of the tension force of the tension spring 8 in the elastic locking and motion conversion part on the working plate 9 is reversed.

[0106] In some embodiments, step S4, driving the connector support to generate linear motion, specifically involves:

[0107] The elastic restoring force of the tension spring 8 drives the working plate 9 to rotate;

[0108] The rotation of the working plate 9 is converted into linear motion of the sliding block 11 through the cooperation of the bottom connecting groove 10 and a sliding block 11.

[0109] The sliding block 11 drives a moving rod 12 to move linearly along a limiting sleeve 13, and the moving rod 12 constitutes the connector support.

[0110] In some embodiments, the drive unit includes two sets of electrically driven cylinders 6 that are symmetrical about the swing center of the transmission unit; the step of activating the drive unit based on the switching control signal includes: selectively activating one set of the electrically driven cylinders 6 according to the target switching direction.

[0111] After the male connector 14 and the female connector 15 are engaged, the contact pressure between them is maintained by the elastic restoring force of the elastic latch and motion conversion part, and there is no need to continuously supply power to the drive part during the engagement state.

[0112] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A source-grid-load-storage switching device for achieving efficient and coordinated energy utilization, characterized in that, The device includes a power storage component (1) and a switching component (3) disposed at one end of the power storage component (1). The switching component (3) is provided with an input interface (301), and the power storage component (1) is provided with a load interface (16). The switching component (3) contains a power path switching mechanism, which includes: The drive unit is used to provide switching power; A transmission unit, connected to the drive unit, is configured to convert the linear motion of the drive unit into rotational motion and trigger a state switch when the motion reaches a critical position. The elastic latching and motion conversion unit, which is linked to the transmission unit, is configured to drive a connector support to generate linear motion by using its own elastic restoring force after the transmission unit switches its trigger state. The connector support is provided with a bidirectional conductive male terminal (14). The energy storage component (1) and the load interface (16) are respectively connected to a connection female terminal (15). Under the drive of the elastic latching and motion conversion part, the connector support drives the male connector (14) to generate linear motion, so that the male connector (14) can be stably engaged with one of the two female connectors (15), thereby realizing the switching and locking of the power path; The transmission part includes a swing plate (4) rotatably mounted on the inner wall of the switching assembly (3); the elastic locking and motion conversion part includes a working plate (9) hinged to the bottom end of the swing plate (4), a tension spring (8) connected between the swing plate (4) and the working plate (9), and a motion conversion mechanism. The motion conversion mechanism includes a connecting groove (10) opened at the bottom end of the working plate (9), a sliding block (11) movably connected in the connecting groove (10), a moving rod (12) fixed to the outer wall of the sliding block (11), and a limiting sleeve (13) fixed to the inner wall of the switching assembly (3) and sleeved on the outside of the moving rod (12). The movable rod (12) constitutes the connector support, and the male connector (14) is fixed to both ends of the movable rod (12).

2. The source-grid-load-storage switching device for achieving efficient and coordinated energy utilization according to claim 1, characterized in that, The drive unit includes at least one electric push cylinder (6) fixed to the inner wall of the switching assembly (3), and a push block (7) is fixedly connected to the output end of the electric push cylinder (6).

3. The source-grid-load-storage switching device for achieving efficient and coordinated energy utilization according to claim 2, characterized in that, The transmission part also includes an arc-shaped limiting groove opened on the inner wall of the switching assembly (3), and a working column (5) is fixedly connected to one end of the swing plate (4); the end of the working column (5) extends into and is slidably connected to the arc-shaped limiting groove. The push block (7) is located on the swing path of the working column (5) so that the electric push cylinder (6) can push the working column (5) to slide along the arc-shaped limiting groove and drive the swing plate (4) to rotate through the push block (7).

4. The source-grid-load-storage switching device for achieving efficient and coordinated energy utilization according to claim 3, characterized in that, The electric push cylinder (6) is provided in two sets. The two sets of electric push cylinders (6) are symmetrical about the swing center of the swing plate (4), and the push block (7) at the front end of each electric push cylinder (6) is respectively located on the swing path on both sides of the working column (5).

5. The source-grid-load-storage switching device for achieving efficient and coordinated energy utilization according to claim 4, characterized in that, The female connector (15) is U-shaped.

6. The source-grid-load-storage switching device for achieving efficient and coordinated energy utilization according to claim 5, characterized in that, The device also includes a control box (2), which is installed on the top of the energy storage assembly (1) and electrically connected to the electric push cylinder (6).

7. A switching control method for the device according to any one of claims 3-6, characterized in that, Includes the following steps: S1. In response to changes in the load's power consumption status, a switching control signal is generated; S2. Based on the switching control signal, start the drive unit to provide a switching power; use the switching power to drive the transmission unit to convert the linear motion of the transmission unit into rotational motion; S3. When the movement of the transmission unit exceeds a critical position, a state switch is triggered. S4. After the state switch is triggered, the elastic restoring force pre-stored in the elastic latch and motion conversion section is used to drive the connector support to generate linear motion. S5. Through the linear movement of the connector support, the male connector (14) fixed on the connector support moves, so that the male connector (14) can be stably connected to either the female connector (15) connected to the energy storage component (1) or the female connector (15) connected to the load interface (16), thereby realizing the switching and locking of the power path.

8. The switching control method according to claim 7, characterized in that, The steps in S2 include: Based on the switching control signal, at least one electric push cylinder (6) is activated, causing the push block (7) at the output end of the electric push cylinder (6) to generate linear motion; The pusher (7) is used to push a working column (5), which forces the working column (5) to slide along a preset arc-shaped limiting groove, and drives the swing plate (4) connected to the working column (5) to rotate. The critical position mentioned in S3 refers to the midpoint of the movement trajectory of the working column (5) in the arc-shaped limiting groove; when the working column (5) is pushed past the midpoint, the tension direction of the tension spring (8) in the elastic locking and motion conversion part on a working plate (9) is reversed.

9. The switching control method according to claim 8, characterized in that, In S4, the specific steps for driving the connector support to generate linear motion are as follows: The elastic restoring force of the tension spring (8) drives the working plate (9) to rotate; The rotation of the working plate (9) is converted into the linear motion of the sliding block (11) by the cooperation of the bottom connecting groove (10) and a sliding block (11). The sliding block (11) drives a moving rod (12) to move linearly along a limiting sleeve (13), and the moving rod (12) constitutes the connector support.

Images