A bidirectional measurement and calibration device for vehicle-grid interactive charging piles

Abstract

The present invention provides a bidirectional metering and calibration device for a vehicle-grid interactive charging pile, which relates to the technical field of metering and calibration devices, and comprises a metering and calibration device body and a conductive cable. The metering and calibration device body comprises a shell, a high-precision electric energy meter, a threading mechanism and a switching locking mechanism. The front end of the shell is screwed with a high-precision electric energy meter, and the bottom of the high-precision electric energy meter is integrally formed with a plug-in sleeve. A threading channel is provided at the bottom end of the high-precision electric energy meter, and a bending structure is provided at the top of the threading channel. The metering and calibration device increases the plug-in depth of the conductive cable, and the installation process is more stable and reliable. Two locking structures for the conductive cable are provided inside the threading channel, so that the safety after connection is higher, and the anti-electric shock effect is further enhanced. The connection state of the calibration device can be quickly controlled, and whether the conductive cable needs to be connected to the calibration device for use can be efficiently controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of metrology and calibration devices, and in particular to a bidirectional metrology and calibration device for a vehicle-grid interactive charging pile. Background Art

[0002] The role and value of the charging pile calibration device is to ensure that the measurement and charging of charging piles are accurate, protect the rights and interests of consumers, and promote the healthy development of the charging industry. This device can effectively prevent the occurrence of problems such as inaccurate measurement and leakage of charging piles, improve the efficiency and safety of charging piles, and provide users with better charging services. Through such mandatory calibration work, a fair and just measurement trade settlement environment can be created for consumers to rest assured.

[0003] In the prior art, the bidirectional metering and calibration device used for the vehicle-grid interactive charging pile can monitor and measure the amount of electricity generated during the charging process by directly connecting the charging pile and the charging vehicle through a cable using an electric energy meter. Therefore, the installation process also requires the use of multiple cables to connect to the calibration device. However, the connection points of the cables inside the conventional calibration device are shallow, which is easy to become loose after long-term use, and external dust and impurities are also easy to enter the interior, and the deeper connection points will make the insertion process time-consuming and labor-intensive. On the other hand, after the conventional calibration device is installed, it is impossible to quickly verify the metering effect of the calibration device, and the connected cable cannot be quickly disconnected from the calibration device, and the calibration device is quickly calibrated with the help of external independent metering equipment. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a two-way metering and calibration device for a vehicle-grid interactive charging pile to solve the problems raised in the above-mentioned background technology. The present invention increases the insertion depth of the conductive cable, and the installation process is more stable and reliable, with high safety, further enhancing the anti-electric shock effect, and can quickly control the connection status of the calibration device, and can efficiently control whether the conductive cable needs to be connected to the calibration device.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a bidirectional metering and calibration device for a vehicle-grid interactive charging pile, comprising a metering and calibration device body and a conductive cable, the metering and calibration device body comprising a shell, a high-precision electric energy meter, a threading mechanism and a switching locking mechanism, the front end of the shell is screwed with a high-precision electric energy meter, the bottom of the high-precision electric energy meter is integrally formed with a plug-in sleeve, a threading channel is opened at the inner bottom end of the high-precision electric energy meter, a bending structure is provided at the top of the threading channel, and a wire feeding chamber is opened in the bending area at the top of the threading channel, the threading mechanism is inserted into the wire feeding chamber, a groove is opened in the middle of the bottom of the high-precision electric energy meter, a support column is welded on the inner wall of the groove, a switching locking mechanism is inserted at the end of the threading channel, the other end of the switching locking mechanism is inserted into the groove from the surface of the high-precision electric energy meter to the outside, and the ends of the conductive cables are embedded in the threading channel from the inside of the plug-in sleeve.

[0006] Furthermore, the threading mechanism includes a rotating sleeve and a wire clamping ring, the top of the rotating sleeve is integrally formed with a rotating disk, a threaded hole is opened in the middle of the rotating disk, the surface of the rotating sleeve is integrally formed with a clamping plate, and an extrusion mechanism is inserted into the inner side of the wire clamping ring.

[0007] Furthermore, a support plate is integrally formed on the side of the wire clamping ring, the end of the support plate is fixed to the surface of the rotating sleeve, a plurality of first levers are integrally formed on the side of the rotating disk, and the clamping plate is clamped on the shell surface of the high-precision electric energy meter.

[0008] Furthermore, the extrusion mechanism includes an extrusion plate and a push rod, the top of the push rod is integrally formed with a threaded column, the top of the threaded column is integrally formed with a knob, and the threaded column passes through the inside of the threaded hole, and a first protrusion is welded to the end of the push rod.

[0009] Furthermore, a plug rod is welded to the rear end of the extrusion plate, a second protrusion is integrally formed at the end of the plug rod, and a spring is welded to the outer side of the extrusion plate, the other end of the spring rests on the inner wall of the extrusion plate.

[0010] Furthermore, the insertion rod passes through the surface of the wire clamping ring and the surface of the rotating sleeve in sequence, the extrusion plate is located inside the wire clamping ring, the conductive cable passes through the inside of the wire clamping ring, and the extrusion plate is used to press on the surface of the conductive cable.

[0011] Furthermore, the switching locking mechanism includes a screw rod and a threaded sleeve, the end of the threaded sleeve is sleeved with a docking bearing, the outer ring end of the docking bearing is welded with a side baffle, and both ends of the side baffle are integrally formed with insulating rings.

[0012] Furthermore, the conductive cable passes through the inside of the two insulating rings in sequence, a test circuit is embedded on the inner wall of the end of the threading channel, and a pressure plate is integrally formed at the end of the test circuit, and the exposed conductor part at the end of the conductive cable is pressed on the pressure plate through the insulating ring.

[0013] Furthermore, a gap is provided between the two insulating rings, the pressure plate is aligned with the middle position of the gap, the end of the screw rod is inserted into the end of the support column, and a conductive column is inserted inside the screw rod, and a second lever is integrally formed on one end of the surface of the threaded sleeve.

[0014] Furthermore, the end of the conductive column protrudes outward from the end of the screw rod, and the conductive cable is pulled through the insulating ring to press the exposed conductor part at the end against the surface of the conductive column. An extension sleeve is provided below the connection point of the two conductive columns, and a connecting interface is provided at the bottom of the extension sleeve.

[0015] Beneficial effects of the present invention:

[0016] 1. The vehicle-grid interactive charging pile bidirectional metering and calibration device has two threading channels symmetrically opened at the bottom of the high-precision electric energy meter, and a bending structure is set inside the threading channel. Therefore, after the external conductive cable is inserted, the threading mechanism can assist in completing the bending process of the conductive cable, thereby hiding the connection point in a deeper position, with high safety, and further enhancing the anti-electric shock effect.

[0017] 2. The bidirectional metering and calibration device of the vehicle-grid interactive charging pile increases the insertion depth of the conductive cable, and the threading mechanism inside the threading channel realizes the locking effect of the middle position of the conductive cable. At the same time, the connection point position can be fixed again by switching the locking mechanism at the end. The whole installation process is more stable and reliable, reducing the probability of the conductive cable loosening.

[0018] 3. The bidirectional metering and calibration device for the vehicle-grid interactive charging pile connects the conductive cable with the calibration circuit inside the high-precision electric energy meter with the help of the switching locking mechanism at the end. At the same time, the connection status of the calibration device can be quickly controlled with the help of the switching locking mechanism, so as to efficiently select whether the conductive cable needs to be connected to the calibration device. With the help of this structure, other metering meters can be used directly from the outside to measure the connectivity of the conductive cable, avoiding the internal circuit of the calibration device, thereby realizing a rapid calibration process of the calibration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the appearance of a bidirectional metering and calibration device for a vehicle-grid interactive charging pile according to the present invention;

[0020] Figure 2It is a cross-sectional view of the interior of the threading channel of the present invention;

[0021] Figure 3 It is a structural diagram of the threading mechanism part of the present invention;

[0022] Figure 4 It is a connection schematic diagram of the extrusion mechanism part of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the switching locking mechanism part of the present invention;

[0024] Figure 6 for Figure 2 Enlarged view of area B;

[0025] Figure 7 for Figure 1 A magnified image of area A;

[0026] In the figure: 1. shell; 2. high-precision electric energy meter; 3. plug-in sleeve; 4. threading mechanism; 5. groove; 6. switching locking mechanism; 7. threading channel; 8. wire feeding chamber; 9. rotating sleeve; 10. rotating disk; 11. first lever; 12. threaded hole; 13. clamping plate; 14. support plate; 15. clamping ring; 16. extrusion mechanism; 17. threaded column; 18. knob; 19. push rod; 20. first protrusion; 21. extrusion plate; 22. plug-in rod; 23. second protrusion; 24. spring; 25. screw rod; 26. threaded sleeve; 27. docking bearing; 28. side baffle; 29. ​​insulating ring; 30. notch; 31. second lever; 32. conductive column; 33. calibration circuit; 34. pressure plate; 35. support column; 36. extension sleeve; 37. connecting interface; 38. conductive cable. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0028] See also Figures 1 to 7The present invention provides the following technical solutions: a bidirectional metering and calibration device for a vehicle-grid interactive charging pile, comprising a metering and calibration device body and a conductive cable 38, wherein the metering and calibration device body comprises a shell 1, a high-precision electric energy meter 2, a threading mechanism 4 and a switching locking mechanism 6, wherein the front end of the shell 1 is screwed with a high-precision electric energy meter 2, and the bottom of the high-precision electric energy meter 2 is integrally formed with a plug-in sleeve 3, a threading channel 7 is provided at the bottom end of the high-precision electric energy meter 2, a bending structure is provided at the top of the threading channel 7, and a wire feeding chamber 8 is provided at the bending area at the top of the threading channel 7, the threading mechanism 4 is inserted into the wire feeding chamber 8, a groove 5 is provided in the middle of the bottom of the high-precision electric energy meter 2, a support column 35 is welded on the inner wall of the groove 5, a switching locking mechanism 6 is inserted at the end of the threading channel 7, and the other end of the switching locking mechanism 6 is inserted into the groove 5 from the surface of the high-precision electric energy meter 2, and the ends of the conductive cable 38 are both embedded in the threading channel 7 from the inside of the plug-in sleeve 3. The vehicle-grid interactive charging pile bidirectional metering and verification device is used to measure the electric energy of the conductive cable 38 connected between the charging pile and the charging vehicle.

[0029] When installing the present invention, the shell 1 is directly fixed on the wall where the conductive cables 38 are laid with screws, and then two conductive cables 38 are used to connect to the high-precision electric energy meter 2 in the calibration device. When the charging pile is used to charge the vehicle later, the charged electric energy can be measured and processed after the conductive cable 38 passes through the high-precision electric energy meter 2, and finally the data calibrated during the charging process is obtained. When installing the conductive cables 38, each conductive cable 38 is directly embedded in the plug-in sleeve 3, inserted toward the depth along the threading channel 7, and when inserted into the interior of the wire feeding chamber 8, the threading mechanism 4 is directly used to assist the connection and push until the bare conductor part at the end of the conductive cable 38 is connected to the switching locking mechanism 6 part, and finally the switching locking mechanism 6 is controlled from the outside to achieve the connection effect between the conductive cable 38 and the calibration device.

[0030] In this embodiment, the threading mechanism 4 includes a rotating sleeve 9 and a clamping ring 15. The top of the rotating sleeve 9 is integrally formed with a rotating disk 10, a threaded hole 12 is provided in the middle of the rotating disk 10, a clamping plate 13 is integrally formed on the surface of the rotating sleeve 9, and a squeezing mechanism 16 is inserted into the inner side of the clamping ring 15. The side of the clamping ring 15 is integrally formed with a support plate 14, the end of the support plate 14 is fixed on the surface of the rotating sleeve 9, the side of the rotating disk 10 is integrally formed with a plurality of first levers 11, and the clamping plate 13 is clamped on the shell surface of the high-precision electric energy meter 2. Two threading channels 7 are symmetrically provided at the bottom of the high-precision electric energy meter 2, and a bending structure is provided inside the threading channel 7. Therefore, after the external conductive cable 38 is inserted, the threading mechanism 4 can assist in completing the bending process of the conductive cable 38, thereby hiding the connection point at a deeper position, which is safer and further enhances the anti-electric shock effect.

[0031] Specifically, when the conductive cable 38 is inserted from the inside of the threading channel 7, the end of the conductive cable 38 is inserted into the inside of the wire feeding chamber 8 and directly inserted into the inside of the wire clamping ring 15 during the process. In this state, the conductive cable 38 and the wire clamping ring 15 are first clamped and locked with the help of the extrusion mechanism 16, and then the first lever 11 on the top is rotated. The rotating sleeve 9 is driven to rotate with the help of the first lever 11, and the wire clamping ring 15 can be directly driven to rotate along the arc structure of the wire feeding chamber 8 through the bottom support plate 14, so that the area where the conductive cable 38 is clamped can be rotated synchronously, so as to achieve the purpose of pushing the conductive cable 38 from this position toward the inside of the threading channel 7 in the rear bending area.

[0032] In this embodiment, the extrusion mechanism 16 includes an extrusion plate 21 and a push rod 19. The top of the push rod 19 is integrally formed with a threaded column 17. The top of the threaded column 17 is integrally formed with a knob 18. The threaded column 17 passes through the inside of the threaded hole 12. The end of the push rod 19 is welded with a first protrusion 20. The rear end of the extrusion plate 21 is welded with an insertion rod 22. The end of the insertion rod 22 is integrally formed with a second protrusion 23. The outer side of the extrusion plate 21 is also welded with a spring 24. The other end of the spring 24 rests on the inner wall of the extrusion plate 21. The insertion rod 22 passes through the surface of the clamping ring 15 and the surface of the rotating sleeve 9 in turn. The extrusion plate 21 is inside the clamping ring 15. The conductive cable 38 passes through the inside of the clamping ring 15. The extrusion plate 21 is used to press on the surface of the conductive cable 38. The insertion depth of the conductive cable 38 is increased, and the interior of the threading channel 7 uses the threading mechanism 4 to achieve a locking effect on the middle position of the conductive cable 38. At the same time, the locking mechanism 6 is switched at the end to fix the connection point position again. The entire installation process is more stable and reliable, and the probability of the conductive cable 38 loosening is reduced.

[0033] Specifically, when the conductive cable 38 is clamped by the threading mechanism 4, the top knob 18 is first manually turned, and the threaded column 17 cooperates with the threaded hole 12 to drive the bottom push rod 19 to move downward, and finally the first protrusion 20 at the bottom is moved downward and abutted against the second protrusion 23. Since the first protrusion 20 and the second protrusion 23 are both hemispherical structures as a whole, the larger first protrusion 20 will push the second protrusion 23 toward the side after moving downward. At this time, the extrusion plate 21 at the end of the insertion rod 22 can be pushed toward the outside through the insertion rod 22, and the conductive wire can be pushed outward by the extrusion plate 21. The cable 38 is against the inner wall of the wire clamping ring 15. In this state, the first lever 11 can be rotated to drive the conductive cable 38 to rotate synchronously with the help of the squeezing effect. When the wire clamping ring 15 is rotated to the other end of the wire feeding chamber 8, the knob 18 is rotated in the opposite direction to release the clamping of the conductive cable 38. Then, only the threading mechanism 4 can be controlled to rotate to the initial position again. The conductive cable 38 can be pushed again by re-clamping. This process can be combined with manual pushing of the conductive cable 38 from below to push the conductive cable 38 to a deeper position and always provide a clamping and locking effect.

[0034] In this embodiment, the switching locking mechanism 6 includes a screw rod 25 and a threaded sleeve 26. The end of the threaded sleeve 26 is sleeved with a docking bearing 27. The outer ring end of the docking bearing 27 is welded with a side baffle 28. The two ends of the side baffle 28 are integrally formed with insulating rings 29. The conductive cable 38 passes through the inside of the two insulating rings 29 in sequence. The inner wall of the end of the threading channel 7 is embedded with a test circuit 33, and the end of the test circuit 33 is integrally formed with a pressure plate 34. The exposed conductor part of the end of the conductive cable 38 is pressed on the pressure plate 34 through the insulating ring 29. A notch 30 is opened between the two insulating rings 29, and the pressure plate 34 is aligned with the middle position of the notch 30. The end of the screw rod 25 is inserted into the end of the support column 35, and a conductive column 32 is inserted into the inside of the screw rod 25. A second lever 31 is integrally formed at one end of the surface of the threaded sleeve 26. The end of the conductive column 32 protrudes outward from the end of the screw rod 25. The conductive cable 38 is pulled through the insulating ring 29 to press the exposed conductor part of the end against the surface of the conductive column 32. An extension sleeve 36 is provided below the connection point of the two conductive columns 32, and a connection interface 37 is provided at the bottom of the extension sleeve 36. The conductive cable 38 is connected to the calibration circuit 33 inside the high-precision electric energy meter 2 by means of the switching locking mechanism 6 at the end. At the same time, the connection state of the calibration device can be quickly controlled by means of the switching locking mechanism 6, so as to efficiently select whether the conductive cable 38 needs to be connected to the calibration device. With the help of this structure, other metering equipment can be used directly from the outside to measure the connection of the conductive cable 38, avoiding the internal circuit of the calibration device, thereby realizing a rapid calibration process of the calibration device.

[0035] Specifically, by rotating the second lever 31, the threaded sleeve 26 can be driven to rotate, and the side baffle 28 and the insulating ring 29 can be pressed against the bare conductor at the end of the conductive cable 38 in cooperation with the docking bearing 27, and the conductor of the conductive cable 38 can be pressed against the pressure plate 34, so that the conductive cable 38 and the high-precision electric energy meter 2 can be connected. When the verification device needs to be verified later, the second lever 31 is directly rotated in the opposite direction, and the insulating ring 29 is pulled to pull the conductive cable 38 toward the other side until the internal conductor of the conductive cable 38 is away from the pressure plate 34 and finally presses against the end of the conductive column 32 on the inner side of the screw rod 25, so that the two conductive cables 38 can be connected through the conductive column 32, and directly docked with other external metering meters at the connecting interface 37 at the bottom, completing the metering process independent of the high-precision electric energy meter 2.

[0036] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A bidirectional measurement and verification device for a vehicle-grid interactive charging pile, comprising a measurement and verification device body and a conductive cable (38), characterized in that: The measurement and verification device body comprises a housing (1), a high-precision electric energy meter (2), a threading mechanism (4) and a switching locking mechanism (6); the front end of the housing (1) is threaded with the high-precision electric energy meter (2); the bottom of the high-precision electric energy meter (2) is integrally formed with a plug-in sleeve (3); the inner bottom end of the high-precision electric energy meter (2) is provided with a threading channel (7); the top end of the threading channel (7) is provided with a bending structure; and the bending area at the top of the threading channel (7) is provided with a wire feeding chamber (8). The threading mechanism (4) is inserted into the interior of the wire feeding chamber (8); a groove (5) is provided in the middle of the bottom of the high-precision electric energy meter (2); a support column (35) is welded on the inner wall of the groove (5); a switching locking mechanism (6) is inserted at the end of the threading channel (7); the other end of the switching locking mechanism (6) is inserted into the groove (5) from the surface of the high-precision electric energy meter (2); and the ends of the conductive cables (38) are embedded in the threading channel (7) from the inside of the plug-in sleeve (3).

2. A bidirectional measurement and calibration device for a vehicle-grid interactive charging pile according to claim 1, characterized in that: The threading mechanism (4) comprises a rotating sleeve (9) and a wire clamping ring (15); a rotating disk (10) is integrally formed on the top of the rotating sleeve (9); a threaded hole (12) is provided in the middle of the rotating disk (10); a clamping plate (13) is integrally formed on the surface of the rotating sleeve (9); and an extrusion mechanism (16) is inserted into the inner side of the wire clamping ring (15).

3. A bidirectional measurement and calibration device for a vehicle-grid interactive charging pile according to claim 2, characterized in that: A support plate (14) is integrally formed on the side of the wire clamping ring (15), the end of the support plate (14) is fixed to the surface of the rotating sleeve (9), a plurality of first levers (11) are integrally formed on the side of the rotating disk (10), and the clamping plate (13) is clamped on the shell surface of the high-precision electric energy meter (2).

4. A bidirectional measurement and calibration device for a vehicle-grid interactive charging pile according to claim 2, characterized in that: The extrusion mechanism (16) comprises an extrusion plate (21) and a push rod (19); a threaded column (17) is integrally formed on the top of the push rod (19); a knob (18) is integrally formed on the top of the threaded column (17); the threaded column (17) passes through the inside of the threaded hole (12); and a first protrusion (20) is welded to the end of the push rod (19).

5. A bidirectional measurement and calibration device for a vehicle-grid interactive charging pile according to claim 4, characterized in that: A plug rod (22) is welded to the rear end of the extrusion plate (21), and a second protrusion (23) is integrally formed at the end of the plug rod (22). A spring (24) is also welded to the outside of the extrusion plate (21), and the other end of the spring (24) rests against the inner wall of the extrusion plate (21).

6. A bidirectional measurement and calibration device for a vehicle-grid interactive charging pile according to claim 5, characterized in that: The insertion rod (22) passes through the surface of the wire clamping ring (15) and the surface of the rotating sleeve (9) in sequence, the extrusion plate (21) is located inside the wire clamping ring (15), the conductive cable (38) passes through the inside of the wire clamping ring (15), and the extrusion plate (21) is used to press on the surface of the conductive cable (38).

7. A bidirectional measurement and calibration device for a vehicle-grid interactive charging pile according to claim 1, characterized in that: The switch locking mechanism (6) comprises a screw rod (25) and a threaded sleeve (26); a butt bearing (27) is sleeved on the end of the threaded sleeve (26); a side baffle (28) is welded to the outer ring end of the butt bearing (27); and insulating rings (29) are integrally formed at both ends of the side baffle (28).

8. A bidirectional measurement and calibration device for a vehicle-grid interactive charging pile according to claim 7, characterized in that: The conductive cable (38) passes through the inside of the two insulating rings (29) in sequence, a test circuit (33) is embedded on the inner wall of the end of the threading channel (7), and a pressure plate (34) is integrally formed at the end of the test circuit (33), and the exposed conductor part at the end of the conductive cable (38) is pressed against the pressure plate (34) through the insulating ring (29).

9. A bidirectional measurement and verification device for a vehicle-grid interactive charging pile according to claim 8, characterized in that: A notch (30) is provided between the two insulating rings (29), the pressure plate (34) is aligned with the middle position of the notch (30), the end of the screw rod (25) is inserted into the end of the support column (35), and a conductive column (32) is inserted into the interior of the screw rod (25), and a second lever (31) is integrally formed on one end of the surface of the threaded sleeve (26).

10. A bidirectional measurement and verification device for a vehicle-grid interactive charging pile according to claim 9, characterized in that: The end of the conductive column (32) protrudes outward from the end of the lead screw (25); the conductive cable (38) is pulled through the insulating ring (29) to press the exposed conductor part of the end against the surface of the conductive column (32); an extension sleeve (36) is provided below the connection point of the two conductive columns (32); and a communication interface (37) is provided at the bottom of the extension sleeve (36).

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