Electric vehicle charging protection device

Abstract

The utility model discloses an electric vehicle charging protection device, and relates to the technical field of electric vehicle charging. The device comprises a device body, a jack, an inner plate, a damping rotating shaft, an outer plate and a display screen, limiting mechanisms are arranged on the two sides of the top of the device body, and limiting blocks, extension springs, electromagnets, magnetic resistance plates, compression springs and cams are arranged, so that when faults occur in the charging process and power failure is caused by the faults, the electromagnets have no power supply, and the display screen cannot be damaged. When a fault occurs but the electromagnet still has power supply, the cam is rotated, the compression spring and the sliding rod are used for pushing the magnetism-resisting plate to move to the position between the rectangular block and the magnetism-conducting block, the magnetic force transmission path is passively blocked, the magnetic attraction force is relieved, and the magnetic force is released. Afterwards, the extension spring assists the limiting block in resetting, locking of the damping rotating shaft can still be relieved, and the user can take down the charging line of himself or herself.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle charging, in particular to an electric vehicle charging protection device. Background Art

[0002] The electric vehicle charging pile is a high-efficiency charger that can charge electric bicycles. It can be divided into fast charging and slow charging according to the charging speed. Fast charging is similar to the ICM step wave six-stage charging for mobile phone charging. It has a good desulfurization effect. It can first activate the battery and then perform maintenance-type fast charging. It has functions such as timing, full alarm, computer fast charging, password control, self-identification voltage, multiple protections, and four-way output. It is equipped with a universal output interface and can quickly charge all electric vehicles. The slow charging generally takes 3-4 hours. Although the charging speed of slow charging is not as fast as that of fast charging, it can make up for the shortcomings of fast charging and will not cause damage to the battery and storage battery. Therefore, slow charging is very popular in community property. When charging electric vehicles, an electric vehicle charging protection device is sometimes used.

[0003] According to the search, the Chinese Patent Network with patent number CN217099694U published "An Electric Vehicle Charging Protection Device". When charging the electric vehicle, the cover on the charging position can be locked, and the connection between the charging cable and the plug board cannot be accessed from the outside. The charging cable is no longer easily knocked off during the charging process, thereby protecting the stability of charging. However, when the cover is locked, the locking method is to push the locking rod through the electric push rod, and cooperate with the shaft to prevent the shaft from rotating. When the user is charging, the charging pile suddenly fails, resulting in power outages, electric push rod failure, or other situations that cause the electric push rod to lack power supply, the cover cannot be opened before the fault of the charging pile is eliminated and repaired, affecting the user's ability to remove their charging cable smoothly, which is not conducive to improving the user experience. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide an electric vehicle charging protection device to solve the technical problem that the existing electric vehicle charging protection device may suddenly fail during the user's charging process, and the user cannot remove the charging cable before the fault is eliminated, affecting the user experience.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a charging protection device for an electric vehicle, comprising a device body, a jack, an inner plate, a damping shaft, an outer plate and a display screen, wherein limiting mechanisms are arranged on both sides of the top of the device body, and the limiting mechanisms include a first cavity, an electromagnet, a base, a magnetic blocking plate, a sliding seat and a cam, limiting grooves are arranged at both ends of the damping shaft, a tension spring is arranged on one side of the base, a moving seat is arranged at one end of the tension spring, a limiting block is arranged on the top of the moving seat, a rectangular block is arranged on one side of the moving seat, a magnetic conductive block is arranged on one side of the electromagnet, a sliding rod is arranged on one side of the magnetic blocking plate, a compression spring is sleeved on the outer side of the sliding rod, and a rotating shaft passes through the interior of the cam.

[0006] By adopting the above technical solution, during normal use, the limit block locks or unlocks the damping shaft by utilizing the power on and off of the electromagnet and the assistance of the tension spring. When a fault occurs and causes overall power failure, the electromagnet has no power supply, the magnetism disappears, the tension spring drives the limit block to reset, and the locking state of the damping shaft is released. When a fault occurs but the electromagnet is not powered off, the cam is rotated, and the compression spring and the slide rod are used to push the magnetic blocking plate to move between the rectangular block and the magnetic conductive block, thereby passively blocking the magnetic force transmission path and releasing the magnetic attraction.

[0007] Furthermore, the movable seat is slidably connected to the base, the tension spring is fixedly connected to the movable seat and the base, and the movable seat is fixedly connected to the limit block.

[0008] By adopting the above technical solution, the sliding connection between the movable seat and the base, combined with the fixed connection of the tension spring, realizes the flexible movement of the limit block and improves the response speed of locking and unlocking.

[0009] Furthermore, the rectangular block is fixedly connected to the movable seat, the rectangular block is made of ferrite stainless steel, a slot and a through slot are provided on the base, and the rectangular block is adapted to the slot.

[0010] By adopting the above technical solution, the rectangular block is made of ferrite stainless steel, which provides good magnetic attraction performance, enhances the magnetic attraction effect of the electromagnet, and ensures the reliability of locking.

[0011] Furthermore, the through slot is located between the clamping slot and the magnetic conductive block, and the magnetic blocking plate is adapted to the through slot.

[0012] By adopting the above technical solution, the setting of the through groove provides a moving space for the magnetic blocking plate, so that the magnetic blocking plate can effectively block or allow the propagation of magnetic force to achieve the unlocking function.

[0013] Furthermore, the rotating shaft is rotatably connected to the device body, the rotating shaft is fixedly connected to the cam, and the cam abuts against one end of the sliding rod.

[0014] By adopting the above technical solution, the fixed connection between the rotating shaft and the cam enables the cam to rotate stably and push the sliding rod abutting against it to move.

[0015] Furthermore, the magnetic blocking plate is fixedly connected to the slide rod, the slide rod is slidably connected to the slide seat, and the compression spring is fixedly connected to the slide seat and one end of the slide rod.

[0016] By adopting the above technical solution, the fixed connection between the magnetic blocking plate and the sliding rod, combined with the setting of the compression spring, provides a smooth driving force, ensuring the smoothness of the unlocking process.

[0017] Furthermore, the inner plate is rotationally connected to the device body via a torsion shaft, and the outer plate is rotationally connected to the device body via a damping shaft.

[0018] By adopting the above technical solution and setting the torque shaft, when the user unplugs the charging cable after use, he can first open the outer plate and pull the inner plate to rotate so that it is away from the end of the charging cable, which is convenient for the user to apply force to unplug the charging cable. After the user unplugs the charging cable and releases the inner plate, the inner plate can be smoothly reset under the action of the torque shaft.

[0019] Furthermore, a second cavity is provided at the rear side of the device body, and a special-shaped hole is provided at one end of the rotating shaft.

[0020] By adopting the above technical solution, the provision of the second cavity provides a convenient operating space for maintenance personnel, making the process of rotating the shaft more convenient.

[0021] Furthermore, the outer diameter of the special-shaped hole is circular, and the inner diameter of the special-shaped hole is hexagonal.

[0022] By adopting the above technical solution, the special structure of the special-shaped hole determines that the shaft rotation process requires a certain professional threshold to avoid misoperation by non-professionals and affect the safety of the outer panel in normal use.

[0023] Furthermore, a top plate is arranged above the first cavity, and threaded holes are provided on the top plate and the top of the device body.

[0024] By adopting the above technical solution, the setting of the top plate and the threaded holes provides a stable protective cover for the charging protection device to prevent the intrusion of dust and moisture.

[0025] In summary, the utility model mainly has the following beneficial effects:

[0026] 1. The utility model provides a limit block, a tension spring, an electromagnet, a magnetic blocking plate, a compression spring and a cam. When a fault occurs during charging and the fault causes a power outage, the electromagnet has no power supply, the magnetism disappears, the tension spring drives the limit block to reset, the locking condition of the damping shaft is released, the outer panel can be opened smoothly, and the user can remove the charging cable when necessary. When a fault occurs but the electromagnet still has power supply, the cam is rotated, the compression spring and the slide bar are used to push the magnetic blocking plate to move between the rectangular block and the magnetic conductive block, passively blocking the magnetic force propagation path and releasing the magnetic attraction. Then the tension spring assists the limit block to reset, and the lock of the damping shaft can still be released without affecting the user's removal of his or her charging cable.

[0027] 2. The utility model provides a second cavity, a special-shaped hole and a top plate. The provision of the second cavity makes it convenient for maintenance personnel to insert a professional hexagonal wrench into the special-shaped hole and rotate the shaft from the outside to rotate the cam, thereby assisting the user to open the outer plate first and then perform maintenance. The maintenance process will not affect the user's wire pulling process. The provision of the top plate facilitates the protection of the limit mechanism when idle. In the event of a fault, it is convenient for maintenance personnel to remove the top plate to expose the limit mechanism in the first cavity, thereby allowing the maintenance process to proceed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0029] Figure 2 It is a rear-view stereoscopic structural schematic diagram of the utility model;

[0030] Figure 3 This is a bottom-up three-dimensional structural schematic diagram of the utility model;

[0031] Figure 4 It is a three-dimensional structural schematic diagram of the limiting mechanism of the utility model;

[0032] Figure 5 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0033] Figure 6 For this utility model Figure 4 Schematic diagram of the enlarged structure at point B.

[0034] In the figure: 1. device body; 2. jack; 3. inner plate; 4. torque shaft; 5. damping shaft; 6. outer plate; 7. display screen; 8. limiting mechanism; 801. first cavity; 802. second cavity; 803. limiting groove; 804. limiting block; 805. moving seat; 806. rectangular block; 807. tension spring; 808. electromagnet; 809. magnetic conductive block; 810. base; 811. through groove; 812. magnetic blocking plate; 813. slide seat; 814. slide rod; 815. compression spring; 816. cam; 817. shaft; 818. special-shaped hole; 819. top plate; 820. threaded hole. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0036] The following describes an embodiment of the utility model based on its overall structure.

[0037] Embodiment 1:

[0038] An electric vehicle charging protection device, such as Figure 1-Figure 6As shown, it includes a device body 1, a jack 2, an inner plate 3, a damping shaft 5, an outer plate 6 and a display screen 7. Limiting mechanisms 8 are arranged on both sides of the top of the device body 1. The limiting mechanisms 8 include a first cavity 801, an electromagnet 808, a base 810, a magnetic blocking plate 812, a slide seat 813 and a cam 816. Limiting grooves 803 are arranged at both ends of the damping shaft 5. A tension spring 807 is arranged on one side of the base 810. A moving seat 805 is arranged at one end of the tension spring 807. A limiting block 804 is arranged on the top of the moving seat 805. A rectangular block 806 is arranged on one side of the moving seat 805. A magnetic conductive block 809 is arranged on one side of the electromagnet 808. A slide bar 814 is arranged on one side of the magnetic blocking plate 812. A compression spring 815 is sleeved on the outer side of the slide bar 814. A rotating shaft 817 runs through the interior of the cam 816. In normal use, the electromagnet 808 is used to turn on and off the power and the tension spring 807 assists. The limit block 804 limits the locking or unlocking of the damping shaft 5. When a fault occurs and causes the entire power outage, the electromagnet 808 has no power supply, the magnetism disappears, and the tension spring 807 drives the limit block 804 to reset, and the locking state of the damping shaft 5 is released. When a fault occurs but the electromagnet 808 is not powered off, by rotating the cam 816, the compression spring 815 and the slide bar 814 are used to push the magnetic blocking plate 812 to move between the rectangular block 806 and the magnetic conductive block 809, passively blocking the magnetic force propagation path, releasing the magnetic attraction, and the outer plate 6 can be opened smoothly. When a sudden fault occurs during the user's charging process, the maintenance personnel can first use the hexagonal wrench to assist the user in opening the outer plate 6, so that the user can successfully remove the charging cable, and then troubleshoot and repair the device body 1 or the limit mechanism 8. The processing process does not delay the user, and the adverse effects of the fault on the user are reduced to a certain extent, thereby improving the user experience to a certain extent.

[0039] See also Figure 2 , Figure 4 , Figure 5 The movable seat 805 is slidably connected to the base 810, the tension spring 807 is fixedly connected to the movable seat 805 and the base 810, the movable seat 805 is fixedly connected to the limit block 804, the sliding connection between the movable seat 805 and the base 810, combined with the fixed connection of the tension spring 807, realizes the flexible movement of the limit block 804 and improves the response speed of locking and unlocking. The fixed connection design of the tension spring 807 ensures the consistency of force during the locking and unlocking process and avoids the problem of unstable locking caused by uneven spring force.

[0040] See also Figure 4 , Figure 6The rectangular block 806 is fixedly connected to the movable seat 805. The rectangular block 806 is made of ferritic stainless steel. A card slot and a through slot 811 are provided on the base 810. The rectangular block 806 is adapted to the card slot. The rectangular block 806 is made of ferritic stainless steel, which provides good magnetic attraction performance, enhances the magnetic attraction effect of the electromagnet 808, and ensures the reliability of locking. The setting of the card slot and the through slot 811 makes the limit of the movement of the rectangular block 806 under the action of the magnetic attraction force be the card slot, and it can only be located on the side of the through slot 811 away from the magnetic conductive block 809.

[0041] See also Figure 4 , Figure 6 The through slot 811 is located between the card slot and the magnetic conductive block 809, and the magnetic blocking plate 812 is adapted to the through slot 811. The setting of the through slot 811 provides a moving space for the magnetic blocking plate 812, so that the magnetic blocking plate 812 can effectively block or allow the propagation of magnetic force to realize the unlocking function. The high degree of adaptability between the magnetic blocking plate 812 and the through slot 811 ensures the stability of the magnetic blocking plate 812 during the movement and avoids failures caused by unstable movement of the magnetic blocking plate 812.

[0042] See also Figure 2 , Figure 4 , Figure 5 The rotating shaft 817 is rotatably connected to the device body 1, and the rotating shaft 817 is fixedly connected to the cam 816. The cam 816 abuts against one end of the sliding rod 814. The fixed connection between the rotating shaft 817 and the cam 816 enables the cam 816 to rotate stably and push the sliding rod 814 abutting against it to move, thereby realizing the unlocking function. The abutting design between the cam 816 and the sliding rod 814 ensures the accuracy of the unlocking action and avoids the unlocking failure caused by poor contact.

[0043] See also Figure 2 , Figure 5 The magnetic blocking plate 812 is fixedly connected to the slide bar 814, the slide bar 814 is slidably connected to the slide seat 813, the compression spring 815 is fixedly connected to the slide seat 813 and one end of the slide bar 814, the fixed connection between the magnetic blocking plate 812 and the slide bar 814, combined with the setting of the compression spring 815, provides a smooth driving force to ensure the smoothness of the unlocking process, the fixed connection between the compression spring 815, the slide seat 813 and the slide bar 814 provides stable support for the slide bar 814, avoiding unlocking failure caused by unstable support.

[0044] See also Figure 1 , Figure 2 , Figure 3The inner plate 3 is rotatably connected to the device body 1 through the torsion shaft 4, and the outer plate 6 is rotatably connected to the device body 1 through the damping shaft 5. The setting of the torsion shaft 4 allows the user to open the outer plate 6 first and pull the inner plate 3 to rotate when unplugging the charging cable after use, so as to facilitate the user to apply force to unplug the charging cable. After the user unplugs the charging cable and releases the inner plate 3, the inner plate 3 can be smoothly reset under the action of the torsion shaft 4. The setting of the damping shaft 5 allows the user to open the outer plate 6 and fix it at the position where the user stops applying force when rotating the outer plate 6, so as to facilitate the outer plate 6 to be fixed, thereby facilitating the user to plug in or unplug the cable.

[0045] Embodiment 2:

[0046] See also Figure 2 , Figure 5 A second cavity 802 is provided on the rear side of the device body 1, and a special-shaped hole 818 is provided at one end of the rotating shaft 817. The setting of the second cavity 802 provides a convenient operating space for maintenance personnel, making the process of rotating the rotating shaft 817 more convenient. The setting of the special-shaped hole 818 allows maintenance personnel to quickly locate and operate the rotating shaft 817, thereby improving the convenience of assisting users to open the outer panel 6.

[0047] See also Figure 2 , Figure 5 The outer diameter of the special-shaped hole 818 is circular, and the inner diameter of the special-shaped hole 818 is hexagonal. The special structure of the special-shaped hole 818 determines that the rotation process of the shaft 817 requires a certain professional threshold to avoid misoperation by non-professionals and affect the safety of the outer plate 6 in normal use. At the same time, the design of the hexagonal inner diameter increases the contact area between the special-shaped hole 818 and the tool, thereby improving the stability during maintenance and the accuracy of operation.

[0048] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 A top plate 819 is arranged above the first cavity 801, and threaded holes 820 are provided on the top plate 819 and the top of the device body 1. The arrangement of the top plate 819 and the threaded holes 820 provides a stable protective cover for the charging protection device to prevent the intrusion of dust and moisture, thereby extending the service life of the device. The design of the threaded holes 820 makes the installation and disassembly of the top plate 819 more convenient, thereby improving the efficiency of maintenance and repair.

[0049] The implementation principle of the utility model is as follows: first, in the initial state, the outer plate 6 is lowered and abuts against the inner plate 3, and the electromagnet 808 is energized, and the magnetic conductive block 809 generates a magnetic attraction to the rectangular block 806 made of ferrite stainless steel, attracting it to move in the direction of the magnetic conductive block 809, driving the movable seat 805 to slide in the base 810, stretching the tension spring 807 so that it accumulates force during the stretching process, and the limit block 804 on the top of the movable seat 805 also continuously approaches the limit groove 803 on the damping shaft 5, until the limit block 804 is completely engaged with the limit groove 803, and the limit mechanism 8 locks the damping shaft 5, and the outer plate 6 cannot be opened; when the user uses it, first The operation is performed on the display screen 7. After the code is swiped for payment, the electromagnet 808 is powered off first, the magnetic attraction disappears, the tension spring 807 retracts, and the moving seat 805 slides in the opposite direction, thereby pulling the limit block 804 out of the limit groove 803 of the damping shaft 5. The limit mechanism 8 releases the restriction on the damping shaft 5, and the user can smoothly open the outer panel 6 and use the charging cable to connect the socket 2 and the electric vehicle. The charging cable head is located between the inner panel 3 and the socket 2 of the device body 1, and the charging wire is located in the groove of the inner panel 3. After the connection is completed, the user covers the outer panel 6; then, the controller controls the electromagnet 808 to be powered on again, and repeats the above process of moving the limit block 804 into the limit groove 803, and the connection is completed. The damping shaft 5 and the outer plate 6 are locked; when the user has finished charging and is unable to open the outer plate 6 to unplug the charging cable after re-scanning the code, the user can contact the maintenance personnel, who will use the Allen wrench to insert the special-shaped hole 818, apply force 90 degrees to rotate the shaft 817, drive the cam 816 to rotate 90 degrees, and its longest end is constantly approaching and contacting one end of the slide bar 814. During this process, the slide bar 814 is pushed to slide along the slide seat 813, and the compression spring 815 is smoothly squeezed, thereby pushing the magnetic blocking plate 812 into the through slot 811. The magnetic blocking plate 812 isolates the electromagnet 808 and the magnetic conductive block 809 on one side of the through slot 811, and emits a magnetic force to the rectangular block 806 on the other side of the through slot 811. After the magnetic attraction is exerted and the rectangular block 806 is no longer subjected to the magnetic attraction, the tension spring 807 retracts, and with the assistance of the movable seat 805, the limit block 804 is driven to leave the limit groove 803, thereby releasing the locking effect of the damping shaft 5. At this time, the user can open the outer plate 6, and pull open the inner plate 3 under the action of the torque shaft 4, and unplug the charging cable; finally, the maintenance personnel open the top plate 819 to expose the first cavity 801 to see if the fault is at the connection point of the electromagnet 808 inside the first cavity 801. If not, the bolts are re-passed through the threaded holes 820 to fix the top plate 819 and the device body 1, and the device body 1 is inspected as a whole to find out the cause of the fault and perform repairs.

[0050] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0051] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. An electric vehicle charging protection device, characterized in that: The invention comprises a device body (1), a socket (2), an inner plate (3), a damping shaft (5), an outer plate (6) and a display screen (7); a limiting mechanism (8) is arranged on both sides of the top of the device body (1); the limiting mechanism (8) comprises a first cavity (801), an electromagnet (808), a base (810), a magnetic blocking plate (812), a slide seat (813) and a cam (816); limiting grooves (803) are arranged at both ends of the damping shaft (5); a tension spring (813) is arranged on one side of the base (810); 07), a movable seat (805) is arranged at one end of the tension spring (807), a limit block (804) is arranged on the top of the movable seat (805), a rectangular block (806) is arranged on one side of the movable seat (805), a magnetic conductive block (809) is arranged on one side of the electromagnet (808), a sliding rod (814) is arranged on one side of the magnetic blocking plate (812), a compression spring (815) is sleeved on the outer side of the sliding rod (814), and a rotating shaft (817) passes through the interior of the cam (816).

2. The electric vehicle charging protection device according to claim 1, characterized in that: The movable seat (805) is slidably connected to the base (810), the tension spring (807) is fixedly connected to the movable seat (805) and the base (810), and the movable seat (805) is fixedly connected to the limit block (804).

3. The electric vehicle charging protection device according to claim 1, characterized in that: The rectangular block (806) is fixedly connected to the movable seat (805), the rectangular block (806) is made of ferrite stainless steel, a clamping slot and a through slot (811) are provided on the base (810), and the rectangular block (806) is adapted to the clamping slot.

4. The electric vehicle charging protection device according to claim 3, characterized in that: The through slot (811) is located between the clamping slot and the magnetic conductive block (809), and the magnetic blocking plate (812) is adapted to the through slot (811).

5. The electric vehicle charging protection device according to claim 1, characterized in that: The rotating shaft (817) is rotatably connected to the device body (1), the rotating shaft (817) is fixedly connected to the cam (816), and the cam (816) is in contact with one end of the sliding rod (814).

6. The electric vehicle charging protection device according to claim 1, characterized in that: The magnetic blocking plate (812) is fixedly connected to the sliding rod (814), the sliding rod (814) is slidably connected to the sliding seat (813), and the compression spring (815) is fixedly connected to the sliding seat (813) and one end of the sliding rod (814).

7. The electric vehicle charging protection device according to claim 1, characterized in that: The inner plate (3) is rotationally connected to the device body (1) via a torsion shaft (4), and the outer plate (6) is rotationally connected to the device body (1) via a damping shaft (5).

8. The electric vehicle charging protection device according to claim 1, characterized in that: A second cavity (802) is provided on the rear side of the device body (1), and a special-shaped hole (818) is provided on one end of the rotating shaft (817).

9. The electric vehicle charging protection device according to claim 8, characterized in that: The outer diameter of the special-shaped hole (818) is circular, and the inner diameter of the special-shaped hole (818) is hexagonal.

10. The electric vehicle charging protection device according to claim 1, characterized in that: A top plate (819) is provided above the first cavity (801), and threaded holes (820) are provided on the top of the top plate (819) and the top of the device body (1).

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