Electric vehicle grid-connected power control device based on power distribution network load management

Abstract

The invention discloses an electric vehicle grid-connected power control device based on power distribution network load management, which comprises a shell, a cabinet door is rotatably mounted on the surface of the shell, an output port is formed in the surface of the shell, a power supply is fixedly mounted in the shell, and an anti-pulling mechanism and a winding mechanism are arranged in the shell. The anti-pulling mechanism comprises a lead screw, a winding wheel is rotationally installed in the shell through a rotating shaft, a buckle is fixedly installed on the surface of the winding wheel, a spiral groove is formed in the circumferential face of the lead screw, the lead screw is in threaded connection with the winding wheel, and a rubber block is fixedly installed at the end, away from the winding wheel, of the lead screw. A supporting plate is installed in the shell, and the lead screw is in threaded connection with the supporting plate. According to the invention, operation in a virtual power state under the conditions of power line leakage and virtual connection can be prevented, potential safety hazards are reduced, and the safety of equipment in use is improved.

Description

Technical Field

[0001] This invention belongs to the field of power system technology, and specifically relates to an electric vehicle grid-connected power control device based on distribution network load management. Background Technology

[0002] In the construction of smart grids, smart microgrids are an inevitable trend, especially since the new electricity reform, the demand for smart microgrids has been increasing. One of the key technologies of smart microgrids is the stable balance control of power under grid stability constraints, and the real-time performance of this control is crucial. Electric vehicles, as flexible energy storage devices, have great potential to participate in grid control operations. When an electric vehicle arrives at a charging station and connects to a charging pile, the charging pile only needs to ensure that the electric vehicle's state of charge reaches the required level when it leaves. This allows for adjustments to the charging power, thereby leveraging the flexibility of electric vehicles and enabling them to participate in grid control operations.

[0003] A search revealed Chinese patent CN207398839U, which discloses a smart grid power control device. The device includes a housing, an aluminum substrate mounted inside the housing, a first annular cooling pipe mounted inside the aluminum substrate, and a power control device mounted on the aluminum substrate. A mounting bracket is installed inside the housing, and a push rod motor is fixed on the mounting bracket. The output shaft of the push rod motor passes through the side wall of the housing and connects to a vertically arranged sealing plate. An air inlet is connected to the sealing plate. Two air guide holes are opened on the side wall of the housing near the sealing plate. The air inlet is slidably and sealingly connected to the air guide holes. The other air guide hole... The device is equipped with a dustproof net. A vertically mounted mounting cylinder is installed on the side wall of the sealing plate away from the housing. The mounting cylinder contains a connecting frame, a fan, a coolant storage tank, and a micro liquid pump. This patent enables both wind-powered and coolant-powered cooling to meet the needs of different environments and improve the service life of the power controller. However, while this patent enables both wind-powered and coolant-powered cooling to meet the needs of different environments and improve the service life of the power controller, the extension of the power cord can lead to a loose connection between the power cord and the power source, posing a safety hazard during use and affecting the safety of operation. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an electric vehicle grid-connected power control device based on power distribution network load management, which can prevent operation in a virtual power state due to power line leakage and power line loose connection, reduce safety hazards, and improve the safety of equipment use.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An electric vehicle grid-connected power control device based on distribution network load management includes a housing with a cabinet door rotatably mounted on its surface. An output port is provided on the surface of the housing. A power source is fixedly installed inside the housing. An anti-pull mechanism and a winding mechanism are provided inside the housing. The anti-pull mechanism includes a lead screw. A winding wheel is rotatably mounted inside the housing via a rotating shaft. A buckle is fixedly mounted on the surface of the winding wheel. A spiral groove is provided on the circumferential surface of the lead screw. The lead screw is threadedly connected to the winding wheel. A rubber block is fixedly mounted at the end of the lead screw away from the winding wheel. A support plate is installed inside the housing, and the lead screw is threadedly connected to the support plate. A control button is provided on the side of the cabinet door closest to the housing. The control button is electrically connected to the power source and can disconnect the power source from the power cord. When the rubber block is blocked, it stops moving, preventing the winding wheel from rotating and thus disconnecting the power source from the power cord.

[0006] The winding mechanism includes a hollow box, a rotating rod, a clamping plate, a first connecting rod, a second connecting rod, a limiting rod, a pushing rod, and a pull rod. The hollow box is fixedly installed on the surface of the outer shell, and a circular hole is opened on the surface of the hollow box. The rotating rod is rotatably installed through the inner and outer walls of the hollow box. The second connecting rod is slidably installed on the inner wall of the hollow box. One end of the first connecting rod is fixedly installed on the circumferential surface of the rotating rod, and the other end of the first connecting rod is rotatably installed on the side of the second connecting rod near the rotating rod. The limiting rod is fixedly installed on the end of the second connecting rod near the circular hole. The pull rod slidably passes through the interior of the hollow box. The pushing rod is fixedly installed on the end of the pull rod near the outer shell. After the limiting rod moves, it contacts the power cord and limits the power cord. After the power cord reaches the required length, the second connecting rod moves, causing the limiting rod to move towards the power cord. After the limiting rod moves, it contacts the power cord and limits the power cord.

[0007] Preferably, a first spring is installed between the winding reel and the outer casing, which drives the winding reel to reset. A second spring is installed between the rotating rod and the hollow box, which drives the rotating rod to reset.

[0008] Preferably, the rubber block is in contact with the control button, and the control button can be pressed by moving the rubber block. The push rod is in contact with the card plate, and the card plate can be kept out of contact with the power cord by pulling the push rod.

[0009] The beneficial effects of this invention are: 1) It can prevent the equipment from operating in a state of virtual power due to exposed power cords or loose power cord connections, thereby reducing safety hazards and improving the safety of equipment use.

[0010] 2) The second connecting rod drives the limiting rod to move away from the circular hole. After the limiting rod moves, it no longer contacts the power cord, allowing the power cord to be freely stretched to the required length. After the power cord is stretched to the required length, the pulling stops. The limiting rod then contacts the power cord and limits its movement. This means that after the power cord reaches the required length, the device will automatically limit its movement. The operation is simple and does not require manual fixing, thus improving its practicality.

[0011] 3) The second spring resets and drives the winding wheel to rotate in the opposite direction to wind up the power cord. This allows for quick winding of the power cord, saving time and improving work efficiency. The rubber block stops moving when it is blocked, preventing the winding wheel from rotating. This disconnects the power supply from the power cord and prevents the power cord from being stretched further after it has moved to its maximum distance. This prevents the power cord from being exposed or loosely connected, thus reducing safety hazards and improving the safety of the equipment during use. Attached Figure Description

[0012] Appendix Figure 1 This is a schematic diagram of the structure of an electric vehicle grid-connected power control device based on distribution network load management according to the present invention.

[0013] Appendix Figure 2 This is a schematic diagram of the internal structure of the outer casing of an electric vehicle grid-connected power control device based on distribution network load management according to the present invention.

[0014] Appendix Figure 3 This is a schematic diagram of the internal structure of the hollow box in an electric vehicle grid-connected power control device based on distribution network load management according to the present invention.

[0015] Appendix Figure 4 This is a schematic diagram showing the positional relationship between the circular hole and the hollow box in an electric vehicle grid-connected power control device based on distribution network load management according to the present invention.

[0016] Appendix Figure 5 This is a schematic diagram of the hollow box structure in an electric vehicle grid-connected power control device based on distribution network load management according to the present invention.

[0017] Appendix Figure 6 This is a schematic diagram of the anti-pull mechanism structure in an electric vehicle grid-connected power control device based on distribution network load management according to the present invention.

[0018] Appendix Figure 7 This is a schematic diagram showing the relationship between the control button and the cabinet door in an electric vehicle grid-connected power control device based on distribution network load management according to the present invention.

[0019] In the diagram: 1. Outer shell; 2. Cabinet door; 3. Power supply; 41. Winding reel; 42. Buckle; 43. Lead screw; 44. Rubber block; 45. Control button; 46. Hollow box; 47. Rotating rod; 48. Card plate; 49. First connecting rod; 410. Second connecting rod; 411. Limiting rod; 412. Push rod; 413. Pull rod; 414. Rotating shaft; 415. Support plate. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-7 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0022] A power control device for electric vehicles based on distribution network load management includes a housing 1. A cabinet door 2 is rotatably mounted on the surface of the housing 1. An output port is opened on the surface of the housing 1. A power supply 3 is fixedly installed inside the housing 1. An anti-pull mechanism and a winding mechanism are provided inside the housing 1. The anti-pull mechanism includes a lead screw 43. A winding wheel 41 is rotatably mounted inside the housing 1 via a rotating shaft 414. A buckle 42 is fixedly mounted on the surface of the winding wheel 41. A spiral groove is opened on the circumferential surface of the lead screw 43. The lead screw 43 is threadedly connected to the winding wheel 41. A rubber block 44 is fixedly installed at the end of the lead screw 43 away from the winding wheel 41. A support plate 415 is installed inside the outer casing 1. The lead screw 43 is threadedly connected to the support plate 415. A control button 45 is installed on the side of the cabinet door 2 near the outer casing 1. The control button 45 is electrically connected to the power supply 3. It can disconnect the power supply 3 from the power cord and prevent the power cord from being stretched further after it has moved to its maximum distance. This prevents the power cord from being exposed or loosely connected, thus reducing safety hazards and improving the safety of the equipment during use.

[0023] The winding mechanism includes a hollow box 46, a rotating rod 47, a clamping plate 48, a first connecting rod 49, a second connecting rod 410, a limiting rod 411, a pushing rod 412, and a pulling rod 413. The hollow box 46 is fixedly installed on the surface of the outer shell 1, and a circular hole is opened on the surface of the hollow box 46. The rotating rod 47 is rotatably installed through the inner and outer walls of the hollow box 46. The second connecting rod 410 is slidably installed on the inner wall of the hollow box 46. One end of the first connecting rod 49 is fixedly installed on the circumferential surface of the rotating rod 47, and the other end of the first connecting rod 49... One end is rotatably mounted on the side of the second connecting rod 410 near the rotating rod 47. The limiting rod 411 is fixedly mounted on the end of the second connecting rod 410 near the round hole. The pull rod 413 slides through the interior of the hollow box 46. The push rod 412 is fixedly mounted on the end of the pull rod 413 near the outer shell 1. After the limiting rod 411 moves, it contacts the power cord and limits the power cord. After the power cord reaches the required length, the device will automatically limit the power cord. The operation is simple and does not require manual fixing, thus improving practicality.

[0024] A first spring is installed between the winding reel 41 and the outer casing 1, and the winding reel 41 is reset by the first spring. A second spring is installed between the rotating rod 47 and the hollow box 46, and the rotating rod 47 is reset by the second spring.

[0025] The rubber block 44 is in contact with the control button 45. The rubber block 44 can be moved to press the control button 45. The push rod 412 is in contact with the card plate 48. The push rod 412 can be pulled to prevent the card plate 48 from contacting the power cord.

[0026] A power control device for electric vehicles based on distribution network load management operates as follows: The power cord is inserted into the latch 42, one end of the power cord is connected to the output terminal of the power supply 3, and the other end of the power cord passes through the output port, through the hollow box 46, and then through the round hole of the hollow box 46. When charging is required, the power cord is pulled outwards. The power cord moves and contacts the latch 48. The movement of the power cord causes the latch 48 to move towards the round hole. The movement of the latch 48 causes the rotating rod 47 to rotate, which in turn causes the first connecting rod 49 to rotate. The first connecting rod 49 then... The second connecting rod 410 moves away from the circular hole, causing the limiting rod 411 to move away from the circular hole. After the limiting rod 411 moves, it is no longer in contact with the power cord, allowing the power cord to be freely stretched to the required length. Once the power cord is stretched to the required length, the pulling stops, and the first spring resets, causing the rotating rod 47 to rotate towards the power cord. The rotation of the rotating rod 47 causes the clamping plate 48 to rotate towards the power cord. The rotation of the rotating rod 47 causes the first connecting rod 49 to rotate towards the circular hole. The rotation of the first connecting rod 49 then causes the second connecting rod 410 to rotate. Moving the second connecting rod 410 towards the circular hole causes the limiting rod 411 to move towards the power cord. After moving, the limiting rod 411 contacts the power cord and limits its movement, ensuring that the device automatically limits the power cord after the required length is achieved. This simplifies operation, eliminates the need for manual fixing, and improves practicality. Pulling the pull rod 413 moves the push rod 412 towards the circular hole. The push rod 412 then contacts the clamping plate 48, causing the clamping plate 48 to rotate towards the circular hole. The rotation of the card plate 48 drives the rotation rod 47 to rotate, which in turn drives the first connecting rod 49 to rotate away from the round hole. The movement of the first connecting rod 49 drives the second connecting rod 410 to move away from the round hole. The movement of the second connecting rod 410 drives the limiting rod 411 to move away from the round hole. After the limiting rod 411 moves, it no longer contacts the power cord, so that the limiting rod 411 no longer limits the power cord. The second spring resets and drives the winding wheel 41 to rotate in the opposite direction and wind up the power cord. This allows for quick winding of the power cord, saving time and improving work efficiency.

[0027] When the power cord is pulled outward, the power cord rotates, causing the buckle 42 to rotate. The buckle 42 rotates, causing the winding wheel 41 to rotate. The winding wheel 41 rotates, causing the lead screw 43 to rotate. Under the action of the support plate 415, the lead screw 43 moves towards the cabinet door 2. The movement of the lead screw 43 causes the rubber block 44 to move towards the cabinet door 2. After the power cord is pulled to its maximum distance, the rubber block 44 will contact the control button 45 on the surface of the cabinet door 2. When the rubber block 44 contacts the control button 45, the control button 45 will disconnect the electrical connection between the power supply 3 and the power cord. After the rubber block 44 is blocked, it can no longer move, so the winding wheel 41 cannot rotate. This disconnects the power supply 3 from the power cord and prevents the power cord from being exposed or loosely connected, thus preventing operation in a state of electrical leakage, reducing safety hazards, and improving the safety of the equipment during use.

[0028] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A power control device for electric vehicles based on load management of power distribution network, comprising a shell, a cabinet door is rotatably installed on the surface of the shell, an output port is formed on the surface of the shell, and a power supply is fixedly installed inside the shell, characterized in that, The inside of the shell is provided with an anti-pulling mechanism and a winding mechanism, the anti-pulling mechanism comprises a lead screw, the inside of the shell is rotatably installed with a winding wheel through a rotating shaft, the surface of the winding wheel is fixedly installed with a buckle, the circumferential surface of the lead screw is provided with a spiral groove, the lead screw is threadedly connected with the winding wheel, the end of the lead screw away from the winding wheel is fixedly installed with a rubber block, the inside of the shell is installed with a supporting plate, the lead screw is threadedly connected with the supporting plate, the side of the cabinet door close to the shell is provided with a control button, and the control button is electrically connected with the power supply.

2. The power control device for grid-connected electric vehicles based on load management of power distribution network according to claim 1, characterized in that, The winding mechanism comprises a hollow box, a rotating rod, a clamping plate, a first connecting rod, a second connecting rod, a limiting rod, a pushing rod and a pull rod, the hollow box is fixedly installed on the surface of the shell, the surface of the hollow box is provided with a circular hole, the rotating rod is rotatably installed through the inner and outer walls of the hollow box, the second connecting rod is slidably installed on the inner wall of the hollow box, one end of the first connecting rod is fixedly installed on the circumferential surface of the rotating rod, the other end of the first connecting rod is rotatably installed on the side of the second connecting rod close to the rotating rod, the limiting rod is fixedly installed on the end of the second connecting rod close to the circular hole, the pull rod is slidably installed in the inside of the hollow box, and the pushing rod is fixedly installed on the end of the pull rod close to the shell.

3. The power control device for grid-connected electric vehicles based on load management of power distribution network according to claim 1, characterized in that, The first clock spring is installed between the winding wheel and the shell.

4. The power control device for grid-connected electric vehicles based on load management of power distribution network according to claim 2, characterized in that, The second clock spring is installed between the rotating rod and the hollow box.

5. The power control device for grid-connected electric vehicles based on load management of power distribution network according to claim 1, characterized in that, The rubber block is in contact with the control button.

6. The power control device for grid-connected electric vehicles based on load management of power distribution network according to claim 2, characterized in that, The pushing rod is in contact with the clamping plate.

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