A connection device and cable for new energy vehicle charging pile

Abstract

The present invention belongs to the technical field of charging pile cable connection, and in particular to a connection device and cable for a new energy vehicle charging pile, comprising an automatic detaching connector and a winding mechanism arranged on the charging pile; the winding mechanism is installed on the charging pile through a clamping mechanism, and the clamping mechanism is provided with a fixed base and an elastic seat, and the fixed base and the elastic seat form a detachment path toward a cable pulling outlet, and the winding mechanism is composed of a first winding disk and a second winding disk, and the first winding disk and the second winding disk are both provided with radially arranged slide grooves surrounding a central axis, and a sliding seat is slidably connected in the slide groove. When the winding mechanism of the present application is subjected to a preset pulling force and is disengaged, sufficient time is provided for the charging gun cable connector and the charging pile cable connector to quickly detach, and the pulling force of the cable will not act on the charging pile itself, and the charging pile will not be subjected to a force other than the preset detachment value.

Description

Technical Field

[0001] The present invention relates to the technical field of charging pile cable connection, and in particular to a connection device and a cable for a new energy vehicle charging pile. Background Art

[0002] New energy vehicle charging piles, also known as electric vehicle charging stations or electric vehicle power supply equipment, are devices that provide electrical energy to electric vehicles. According to the charging type, they include AC charging piles and DC charging piles; AC charging piles are mainly used in homes and personal parking spaces, usually connected to the home power system to provide slow charging for electric vehicles. The charging power of AC charging piles is usually below 3.7 kilowatts. Its working principle is to transmit the AC power provided by the power grid directly to the charging interface of the electric vehicle, and then the built-in on-board charger of the electric vehicle converts the AC power into DC power, and finally charges the battery pack. This process is relatively simple, but the charging speed is slow, and it usually takes several hours to complete the charging;

[0003] DC charging piles can provide fast charging services for electric vehicles, and the charging power is usually above 60 kilowatts. The design of DC charging piles is more complex and powerful. It first converts the AC power of the power grid into DC power through efficient conversion equipment, and then directly transmits it to the battery pack of the electric vehicle for charging. Since the conversion process of the on-board charger is omitted, the DC charging pile can significantly shorten the charging time, usually only 30 minutes to 1 hour to complete most of the charging process.

[0004] New energy electric vehicles start charging very quickly. If you forget to unplug the plug after charging is completed, the high-voltage cable is likely to break. The broken cable is connected to a large voltage and current inside, and is directly exposed to the outside after breaking, which can easily lead to dangerous accidents such as leakage and short circuit. Therefore, an automatically detachable connection connector is generally provided, which will cause the charging gun cable to detach from the charging pile cable when pulled abnormally.

[0005] For example, CN202110854957.2 discloses a new energy charging pile with a cable pulling self-separation structure, including a charging pile body, a charging mechanism installed inside the charging pile body, and the charging mechanism includes a main line connection terminal, the main line connection terminal is fixedly installed inside the charging pile body, the right end of the main line connection terminal is plugged with a connection socket, and a high-voltage output cable is fixedly installed on the right end of the connection socket, and the other end of the high-voltage output cable is fixedly connected to a charging gun. The present invention sets a connection between the connection socket and the main line connection terminal, so that when the device is pulled by external force, the main line connection terminal and the connection socket can be separated and disconnected, effectively avoiding the high-voltage output cable from breaking when the external force is too large, and effectively ensuring the safety and stability of the device;

[0006] However, many existing charging piles are equipped with storage rollers for easy storage of cables. When the cables are stored on the storage rollers and are pulled quickly, dynamic load changes will occur, which may affect the overall stability of the charging pile, causing the storage rollers or the entire charging pile to become loose or damaged before the pulling self-separation structure takes effect.

[0007] In addition, when the cable is pulled at a constant speed and the length reaches the trigger point, in order to ensure the stable triggering of the self-separation structure, it is necessary to reserve time for the charging gun cable and the charging pile cable to completely fall off after the trigger point is triggered. Therefore, a section of cable needs to be wound after the trigger point as a buffer to provide time after the trigger for the charging pile cable to separate from the charging gun cable, which wastes storage space and increases cable costs.

[0008] In addition, new energy electric vehicles start up very quickly, and the time left for the connection connector to react is too short. After the connection connector is triggered, if the reserved time is too short, it is easy to pull the connector before the charging gun cable is completely detached, causing the connector to exert force on the charging pile cable connector, causing the charging pile components to loosen or be damaged. Summary of the invention

[0009] The present invention provides a connection device and cable for a new energy vehicle charging pile, which solves the problem in the prior art that the charging gun cable and the charging pile cable are separated when abnormally pulled. However, the new energy electric vehicle starts up quickly, and the time left for the connection connector to react is too short, making it difficult for the connection connector to take effect stably after being triggered.

[0010] The present invention provides the following technical solutions:

[0011] On the one hand, the present application provides a connection device for a new energy vehicle charging pile, including an automatic disengagement connector and a winding mechanism arranged on the charging pile;

[0012] The automatic disengagement connector comprises a charging pile cable connector provided on the charging pile, a charging gun cable connector is plugged into the upper side of the charging pile cable connector, a clamping mechanism and a pop-up mechanism are provided between the charging pile cable connector and the charging gun cable connector, a charging pile cable is installed in the charging pile cable connector, a charging gun cable is installed in the charging gun cable connector, the charging pile cable and the charging gun cable are plug-connected, and after the clamping mechanism is released, the pop-up mechanism causes the charging gun cable connector to be disengaged from the charging pile cable connector;

[0013] The cam is provided with a first end for camming the second end of the second wheel and a second end for camming the second end of the second wheel.

[0014] In a possible implementation manner, a diameter reducing rod is formed at the end of the winding rod on the first winding disk, and a diameter reducing groove is formed at the end of the winding rod of the second winding disk, and the diameter reducing rod is adapted to the diameter reducing groove.

[0015] In a possible implementation, a first end cover is rotatably mounted on the outer side of the first winding disc via a bearing, a second end cover is rotatably mounted on the outer side of the second winding disc via a bearing, and the first end cover and the second end cover are fixedly mounted on the charging pile via a clamping mechanism.

[0016] In a possible embodiment, a staged pause mechanism is arranged between the first winding disk and the first end cover, and the staged pause mechanism includes an arc-shaped ring sleeve fixed to the outer side of the first winding disk, a rotating ring is arranged on the arc-shaped ring sleeve, and an outer ratchet is arranged on the outer side of the rotating ring. A fixed ring is fixed to the inner side of the first end cover, and an inner ratchet is arranged on the inner side of the fixed ring. The arc-shaped ring sleeve drives the rotating ring to rotate, and the rotating ring moves toward the outer ratchet side under the action of centrifugal force. When the outer ratchet is engaged with the inner ratchet, the first winding disk is locked with the first end cover.

[0017] In a possible embodiment, a coil spring reset mechanism is provided between the second winding disk and the second end cover, and the coil spring reset mechanism includes a coil spring provided between the second end cover and the second winding disk, and one end of the coil spring is fixedly connected to the second winding disk, and the other end is fixedly connected to the second end cover.

[0018] In a possible embodiment, the clamping mechanism includes a lower fixed seat and an upper fixed seat, a lower arc groove is arranged on the upper side of the lower fixed seat, a guide rod is slidably connected to the upper fixed seat, a return spring is arranged on the guide rod and the upper fixed seat, an elastic seat is installed at the lower end of the guide rod, an upper arc groove is arranged on the lower side of the elastic seat, and a winding mechanism is clamped between the lower arc groove and the upper arc groove.

[0019] In a possible implementation, the clamping mechanism includes a push-pull electromagnetic switch installed on the charging pile cable connector, the output shaft of the push-pull electromagnetic switch penetrates into the charging pile cable connector and is connected to a wedge block, and a wedge-shaped opening that cooperates with the wedge block is provided on the charging gun cable connector. When the push-pull electromagnetic switch is powered off, the wedge block extends into the wedge-shaped opening under the action of elasticity, and when the push-pull electromagnetic switch is powered on, the wedge block retracts under the action of electromagnetic force.

[0020] In a possible implementation, an extension ring is further provided on the winding rod, and a plurality of tie bars are provided on a side opposite to the extension ring, and the tie bars form a winding surface that gradually increases from the winding rod to the extension ring.

[0021] On the other hand, a cable for a new energy vehicle charging pile includes a charging gun, which is connected to a winding section of a charging gun cable wound on a winding drum. The end of the winding section connected to the charging gun is a movable end, and the end connected to the charging pile is a fixed end. The fixed end is connected to the plug-in section through an electric slip ring, and the plug-in section is connected to a male plug connector and a charging gun cable connector.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention.

[0023] In the present invention, when the push-pull electromagnetic switch is energized, the output shaft retracts, and the output shaft drives the wedge block to retract into the first strip groove, and the first spring is compressed, and the charging gun cable connector loses the limiting effect of the wedge block, so the elastic potential energy of the second spring is released, and the second spring resets and stretches, and at the same time, the second spring pushes the charging gun cable connector to move outward, so that the second spring and the charging gun cable connector are quickly separated from the charging pile cable connector.

[0024] The first winding drum and the second winding drum are far away from each other, and the first winding drum, the second winding drum, the first winding rod and the second winding rod can be quickly separated from the wound cable, so that the wound cable can be quickly unwound, providing sufficient time for the charging gun cable connector and the charging pile cable connector to quickly disconnect, and the pulling force of the cable will not act on the charging pile itself, and the charging pile will not be subjected to forces beyond the preset separation value. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the three-dimensional structure of a connection device for a new energy vehicle charging pile provided by an embodiment of the present invention;

[0026] Figure 2 A schematic diagram of an exploded structure of a connection device for a new energy vehicle charging pile provided by an embodiment of the present invention;

[0027] Figure 3A schematic diagram of an exploded structure of an automatic disconnecting connector of a connection device for a new energy vehicle charging pile provided by an embodiment of the present invention;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the internal thread sleeve;

[0029] Figure 5 It is a schematic diagram of the structure of the charging pile cable connector;

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the charging gun cable connector;

[0031] Figure 7 A schematic diagram of the structure of a clamping mechanism of a connection device for a new energy vehicle charging pile provided by an embodiment of the present invention;

[0032] Figure 8 One of the structural schematic diagrams of a first winding disk of a connection device for a new energy vehicle charging pile provided by an embodiment of the present invention;

[0033] Fig. 9 A second structural schematic diagram of a first winding disk of a connection device for a new energy vehicle charging pile provided by an embodiment of the present invention;

[0034] Fig.10 One of the structural schematic diagrams of a second winding disk of a connection device for a new energy vehicle charging pile provided by an embodiment of the present invention;

[0035] Fig.11 A second structural schematic diagram of a second winding disk of a connection device for a new energy vehicle charging pile provided by an embodiment of the present invention;

[0036] Fig.12 A schematic diagram of a second end cover and a coil spring structure of a connection device for a new energy vehicle charging pile provided by an embodiment of the present invention;

[0037] Fig.13 A schematic structural diagram of a second winding rod, a second ring sleeve, a second connecting rod and a second sliding seat of a connection device for a new energy vehicle charging pile provided by an embodiment of the present invention;

[0038] Fig.14 A bottom-up structural schematic diagram of a second winding disc and a second end cover of a connection device for a new energy vehicle charging pile provided by an embodiment of the present invention;

[0039] Fig.15 A schematic diagram of the second extension ring and second tie bar structure of a connection device for a new energy vehicle charging pile provided in an embodiment of the present invention.

[0040] Reference numerals:

[0041] 1. Internal threaded sleeve; 2. Charging pile cable connector; 3. Push-pull electromagnetic switch; 4. Charging gun cable; 5. First end cover; 6. First winding disk; 7. First extension ring; 8. Second extension ring; 9. Second tie bar; 10. Upper fixing seat; 11. Second mounting plate; 12. Third spring; 13. First mounting plate; 14. Second spring; 15. Lower fixing seat; 16. Second winding disk; 17. Charging pile cable; 18. Plane; 19. First strip groove; 20. Wedge block; 21. Second strip groove; 22. Wedge mouth; 23. Charging gun cable connector; 24. First spring; 25. Guide rod; 26. Upper arc groove; 27. Lower arc groove; 28. First bearing; 2 9. Arc-shaped ring sleeve; 30. Rotating ring; 31. External ratchet; 32. Fixed ring; 33. First winding rod; 34. Variable diameter rod; 35. First sliding seat; 36. First connecting rod; 37. First push rod; 38. First center rod; 39. First ring sleeve; 40. First slide groove; 41. Second winding rod; 42. Variable diameter groove; 43. Second push rod; 44. Electric slip ring; 45. Second center rod; 46. Second sliding seat; 47. Second connecting rod; 48. Second slide groove; 49. Fifth spring; 50. Second ring sleeve; 51. Second bearing; 52. First fixed column; 53. Second end cover; 54. Through port; 55. Coil spring; 56. Second fixed column; 57. Elastic seat. DETAILED DESCRIPTION

[0042] The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0043] like Figure 1-15As shown, the present application provides a connection device for a new energy vehicle charging pile, including an automatic detaching connector and a winding mechanism arranged on the charging pile; the automatic detaching connector includes a charging pile cable connector 2 arranged on the charging pile, and a push-pull electromagnetic switch 3 is arranged on the outer side of the charging pile cable connector 2, and the first strip grooves 19 arranged along the length direction are symmetrically arranged on the two side walls of the charging pile cable connector 2, and a through hole penetrating the side wall is opened in the first strip groove 19, and the output rod of the push-pull electromagnetic switch 3 passes through the through hole, and a wedge block 20 is fixed to the end of the output rod, and the wedge block 20 and the first A first spring 24 is arranged between the strip grooves 19, an internal thread is provided at the lower end of the charging pile cable connector 2, and an internal thread sleeve 1 is connected to the lower end of the charging pile cable connector 2 through the internal thread, a second spring 14 is arranged on the top of the internal thread sleeve 1, a charging pile cable 17 is passed through the center of the internal thread sleeve 1, and the end of the charging pile cable 17 is connected to a female plug connector, a charging gun cable connector 23 is plugged into the upper part of the charging pile cable connector 2, and the charging gun cable connector 23 is provided with two symmetrically arranged second strip grooves 21, a wedge-shaped opening 22 is arranged in the second strip groove 21, and a female plug connector is arranged in the female plug connector. A bayonet is provided, which is adapted to the wedge block 20. A plug-in section of the charging gun cable 4 is provided at the center of the charging gun cable connector 23. A male plug connector is connected to the lower end of the plug-in section. The charging gun cable connector 23 is inserted into the charging pile cable connector 2. The wedge block 20 first contacts the lower wedge-shaped opening 22. When the wedge-shaped opening 22 moves downward, the wedge block 20 contracts inward, and the first spring 24 is compressed and deformed by the force. When the wedge block 20 moves to the bayonet, the first spring 24 resets and releases the elastic force to make the wedge block 20 extend into the bayonet, thereby connecting the charging gun cable 4 to the charging pile. The cable connector 23 is clamped on the charging pile cable connector 2, and the male connector of the charging gun cable 4 is inserted into the female connector of the charging pile cable 17, so that the charging pile cable 17 and the charging gun cable 4 are connected. Two planes 18 are symmetrically arranged on the lower side of the internal threaded sleeve 1. The internal threaded sleeve 1 is rotated by a wrench so that the internal threaded sleeve 1 is screwed into one side of the charging pile cable connector 2. The top of the second spring 14 contacts the lower side of the charging gun cable connector 23. As the internal threaded sleeve 1 is screwed in, the second spring 14 is gradually compressed, and the second spring 14 accumulates elastic potential energy.

[0044] The push-pull electromagnetic switch 3 is a switch device that realizes push-pull action by electromagnetic principle, including an electromagnet mechanism, a push-pull mechanism, and a reset spring. The electromagnet mechanism includes an iron core and a coil. When the coil is energized, a magnetic field is generated to magnetize the iron core and generate attraction. The push-pull mechanism is composed of a movable slide bar (or a movable iron core) and a static iron core. The movable slide bar can reciprocate along a straight line under the action of the electromagnetic force. The reset spring is used to automatically reset the movable slide bar to the initial position when the electromagnetic force disappears. When the push-pull electromagnetic switch 3 is energized, the iron core of the push-pull electromagnetic switch 3 is magnetized and generates attraction so that the output shaft retracts. When the push-pull electromagnetic switch 3 is de-energized, the output shaft is reset and extended under the action of the first spring 24.

[0045] When the push-pull electromagnetic switch 3 is energized, the output shaft retracts, and the output shaft drives the wedge block 20 to retract into the first strip groove 19, and the first spring 24 is compressed, and the charging gun cable connector 23 loses the limiting effect of the wedge block 20, so the elastic potential energy of the second spring 14 is released, and the second spring 14 resets and stretches. At the same time, the second spring 14 pushes the charging gun cable connector 23 to move outward, so that the second spring 14 and the charging gun cable connector 23 are quickly disengaged from the charging pile cable connector 2. After the disengagement is completed, the push-pull electromagnetic switch 3 is powered off, and the output shaft extends outward and resets under the action of the first spring 24.

[0046] The charging pile is also provided with two clamping mechanisms, which clamp the two ends of the winding mechanism respectively. The clamping mechanisms have the same structure and both include a lower fixing seat 15 at the lower side and an upper fixing seat 10 at the upper side. A lower arc groove 27 is provided on the upper side of the lower fixing seat 15. Two first mounting plates 13 are fixedly provided on one side of the lower fixing seat 15. The two first mounting plates 13 are fixedly connected to the charging pile. An upper fixing seat 10 is provided on the upper side of the lower fixing seat 15. Two second mounting plates 11 are fixedly provided on one side of the upper fixing seat 10. The two second mounting plates 11 are fixedly connected to the charging pile. Two guide holes are provided on the upper fixing seat 10. The guide holes slide in Two guide rods 25 are connected, and the lower ends of the two guide rods 25 are fixedly connected with elastic seats 57. The lower side of the elastic seat 57 is provided with an upper arc groove 26. The two guide rods 25 are sleeved with a third spring 12. The lower side of the third spring 12 contacts the elastic seat 57, and the upper side of the third spring 12 contacts the upper fixed seat 10. The ends of the guide rods 25 are connected with locking nuts through threads. A winding mechanism is clamped between the lower arc groove 27 and the upper arc groove 26. The disengagement direction of the clamping mechanism is consistent with the outlet direction of the winding mechanism. The disengagement force of the winding mechanism from the clamping mechanism is adjusted by adjusting the height of the upper fixed seat 10 and the elastic potential energy of the third spring 12.

[0047] The winding mechanism includes a first winding disk 6 and a second winding disk 16. A staged pause mechanism, a first bearing 28 and a first end cover 5 are arranged on the outer side of the first winding disk 6. The first end cover 5 is rotatably connected to the first winding disk 6 through the first bearing 28. The first end cover 5 is fixedly connected to the charging pile through the clamping mechanism on the upper side. A plurality of radially arranged first slide grooves 40 are arranged on the inner side of the first winding disk 6. A first sliding seat 35 is slidably connected in the first slide groove 40. A first winding rod 33 is fixed on the first sliding seat 35. A first center rod 38 is arranged in the middle of the first winding disk 6. A first ring sleeve 39 is slidably connected to the first center rod 38. A first connecting rod 36 is rotatably connected to the first ring sleeve 39. The first connecting rod 36 is rotatably connected to the first ear seat on the first sliding seat 35. Two symmetrically arranged first push rods 37 are fixed at the end of the first center rod 38. The first push rod 37 forms an upper limit for the first ring sleeve 39 to prevent the first ring sleeve 39 from falling out. The first center rod 38 is fixed with a first push rod 37. A fourth spring is sleeved on 8, the upper end of the fourth spring contacts the first ring sleeve 39, and the lower end of the fourth spring contacts the first winding disk 6. The fourth spring provides an upward force on the first ring sleeve 39 along the first center rod 38, so that the first ring sleeve 39 moves upward along the first center rod 38. The upward movement of the first ring sleeve 39 drives the first connecting rod 36 to move upward. The upward movement of the first connecting rod 36 drives all the first sliding seats 35 to move along the first sliding groove 40 toward the first center rod 38, so that the first winding rod 33 moves toward the first center rod 38, and the winding radius formed by the first winding rod 33 shrinks. The end of the first winding rod 33 is provided with a reducing rod 34 with a reduced radius.

[0048] A coil spring reset mechanism, a second bearing 51 and a second end cover 53 are provided on the outer side of the second winding disk 16. The second end cover 53 is rotatably connected to the second winding disk 16 through the second bearing 51. The second end cover 53 is fixedly connected to the charging pile through the clamping mechanism on the lower side. A plurality of radially arranged second slide grooves 48 are provided on the inner side of the second winding disk 16. A second sliding seat 46 is slidably connected in the second slide groove 48. A second winding rod 41 is fixed on the second sliding seat 46. A second center rod 45 is provided in the middle of the second winding disk 16. A second ring sleeve 50 is slidably connected to the second center rod 45. A second connecting rod 47 is rotatably connected to the second ring sleeve 50. The second connecting rod 47 is rotatably connected to the second ear seat on the second sliding seat 46. Two symmetrically arranged second push rods 43 are fixed to the end of the second center rod 45. The second push rod 43 forms an upper limit for the second ring sleeve 50 to prevent the second ring sleeve 50 from falling out. A fifth spring 49 is sleeved on the second center rod 45. The upper end of the fifth spring 49 contacts the second ring sleeve 50, and the lower end of the fifth spring 49 contacts the second winding disk 16. The fifth spring 49 provides an upward force on the second ring sleeve 50 along the second center rod 45, so that the second ring sleeve 50 moves upward along the second center rod 45. The upward movement of the second ring sleeve 50 drives the second connecting rod 47 to move upward. The upward movement of the second connecting rod 47 drives all the second sliding seats 46 to move toward the second center rod 45 along the second sliding groove 48, so that the second winding rod 41 moves toward the second center rod 45. The winding radius formed by the second winding rod 41 shrinks. The end of the second winding rod 41 is provided with a reducing groove 42 with a reduced radius. The second center rod 45 is provided with an installation opening that passes through the outside of the second winding disk 16. An electric slip ring 44 is installed in the installation opening. The fixed end of the electric slip ring 44 is connected to the male plug connector of the charging gun cable 4 through a wire. The sliding end of the electric slip ring 44 is connected to the fixed end of the winding cable, and the movable end of the winding cable is connected to the charging gun.

[0049] When the first winding disc 6 and the second winding disc 16 are assembled into a complete winding mechanism, the reducing rod 34 is inserted into the reducing groove 42, the first winding rod 33 and the second winding rod 41 are assembled into a continuous seamless whole rod, and the lower end of the first push rod 37 is against the second ring sleeve 50, and at the same time, the upper end of the second push rod 43 is against the first ring sleeve 39, and when the first winding disc 6 and the second winding disc 16 are moved toward the middle, the first ring sleeve 39 is moved toward the first winding disc 6, the fourth spring is compressed, and the first ring sleeve 39 is brought The first connecting rod 36 is driven to move upward, and the first connecting rod 36 pushes the first sliding seat 35 to move outward along the first sliding groove 40. Synchronously, the second ring sleeve 50 moves closer to the second winding disk 16, and the fifth spring 49 is compressed. The second ring sleeve 50 drives the second connecting rod 47 to move downward, and the second connecting rod 47 pushes the second sliding seat 46 to move outward along the second sliding groove 48. The whole rod, the first winding disk 6, and the second winding disk 16 form a winding disk, and the cable is wound on the whole rod to complete the storage of the winding section of the charging gun cable 4.

[0050] During normal charging, take out the charging gun and pull the cable, the cable will drive the winding disk to rotate, the cable on the winding disk will be released, and as the winding disk rotates, the coil spring 55 contracts to continue the elastic potential energy. After the charging gun is pulled into place, the winding disk stops rotating through the staged pause mechanism. After charging is completed, the cable can be pulled to unlock the staged pause mechanism, so that the winding disk is unlocked, and the winding disk is reset under the elastic potential energy of the coil spring 55, so the winding disk rotates in the opposite direction to store the cable.

[0051] When charging is completed, if the charging gun is still plugged into the car's charging port, the car will move with the charging gun after starting, and the car will start quickly. When moving quickly with the charging gun and the cable, the staged pause mechanism will be locked. After locking, the winding disk cannot rotate. When the pulling force is greater than the disengagement force, the winding disk will disengage from the two clamping mechanisms. After disengagement, the push-pull electromagnetic switch 3 is energized, so that the second spring 14 and the charging gun cable connector 23 are quickly disengaged from the charging pile cable connector 2.

[0052] At the same time, the fourth spring and the fifth spring 49 are reset under the action of elastic potential energy, and the fourth spring provides a downward force on the first ring sleeve 39 and an upward force on the first winding disk 6; when the first ring sleeve 39 is subjected to the downward force, the first ring sleeve 39 slides downward along the first center rod 38, and the first ring sleeve 39 drives the first connecting rod 36 to move downward. The downward movement of the first connecting rod 36 will drive the first sliding seat 35 and the first winding rod 33 to move toward the first center rod 38, thereby causing the radius of the first winding rod 33 around the first center rod 38 to shrink; the fifth spring 49 will provide an upward force on the second ring sleeve 50 and a downward force on the second winding disk 16, and when the second ring sleeve 50 is subjected to the upward force, the second ring sleeve 50 will slide downward along the first center rod 38. The second center rod 45 slides upward, and the second ring sleeve 50 drives the second connecting rod 47 to move upward. The upward movement of the second connecting rod 47 drives the second sliding seat 46 and the second winding rod 41 to move toward the second center rod 45, so that the radius of the second winding rod 41 around the second center rod 45 shrinks; at the same time, the first winding drum 6 and the second winding drum 16 move away from each other, and the first winding drum 6, the second winding drum 16, the first winding rod 33 and the second winding rod 41 can be quickly separated from the wound cable, so the wound cable can be quickly unwound, providing sufficient time for the charging gun cable connector 23 to quickly disengage from the charging pile cable connector 2, and the pulling force of the cable will not act on the charging pile itself, and the charging pile will not be subjected to forces other than the preset detachment value.

[0053] The staged pause mechanism includes an arcuate ring sleeve 29 fixed to the outside of the first winding disk 6, a rotating ring 30 is sleeved on the arcuate ring sleeve 29, a first bearing 28 is also fixed to the upper end of the arcuate ring sleeve 29, a first end cover 5 is fixed to the outer wall of the first bearing 28, the first end cover 5 is rotatably connected to the arcuate ring sleeve 29 through the first bearing 28, a fixing ring 32 is fixed to the lower side of the first end cover 5, an inner ratchet is provided on the inner side of the fixing ring 32, and an outer ratchet 31 is provided on the outer side of the rotating ring 30. The arc-shaped ring sleeve 29 will drive the rotating ring 30 to rotate as the first winding disk 6 rotates. When the rotating ring 30 rotates faster, it will centrifugally move toward the inner ratchet side. When the inner ratchet engages with the outer ratchet 31, the first winding disk 6 and the first end cover 5 are locked. The winding disk can be fixed and temporarily locked by quickly pulling the wound cable, and when the wound cable is pulled abnormally quickly, a pulling force will be applied to the first end cover 5 to form a pulling force, so that the winding disk will be separated from the clamping mechanism.

[0054] The coil spring reset mechanism includes a second bearing 51 and a first fixed column 52 arranged on the outside of the second winding disk 16. The outer wall of the second bearing 51 is fixedly connected to the second end cover 53, so that the second end cover 53 can rotate relative to the second winding disk 16. A cable passage 54 is also reserved on the second end cover 53. A second fixed column 56 and a coil spring 55 are arranged on the inner side of the second end cover 53. The inner end of the coil spring 55 is fixedly connected to the second fixed column 56, and the outer end of the coil spring 55 is fixedly connected to the first fixed column 52. The coil spring reset mechanism provides a reset force to the winding disk, so that after charging is completed, the winding disk can reset and rotate under the action of the coil spring reset mechanism, thereby retracting the pulled-out cable.

[0055] A first extension ring 7 is fixed to the lower end of the first winding rod 33, and a second extension ring 8 is fixed to the upper end of the second winding rod 41. A plurality of first tie bars arranged radially are fixed on the first extension ring 7, and a plurality of second tie bars 9 arranged radially are fixed on the second extension ring 8. The first tie bars and the second tie bars 9 are both provided with an inclined surface which is higher inside and lower outside. When the first tie bars and the second tie bars 9 are arranged relatively to each other, a winding surface which is narrow inside and wide outside is formed. When the first winding drum 6 and the second winding drum 16 are away from each other, since the contact area between the innermost layer of cable and the first winding rod 33 and the second winding rod 41 is smaller, the friction effect of the first winding rod 33 and the second winding rod 41 on the wound cable is also smaller. At the same time, after the two are separated, when the wound cable is pulled, the force of the cable acts on the inclined surface, which provides an outward component force to the first winding drum 6 and the second winding drum 16, thereby allowing the first winding drum 6 and the second winding drum 16 to be separated more smoothly.

[0056] A cable for a new energy vehicle charging pile includes a charging gun, which is connected to a winding section of a charging gun cable 4 wound on a winding drum. The end of the winding section connected to the charging gun is a movable end, and the end connected to the charging pile is a fixed end. The fixed end is connected to a plug-in section through an electric slip ring 44, and the plug-in section is connected to a male plug connector and a charging gun cable connector 23.

[0057] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention; the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A connection device for a new energy vehicle charging pile, characterized in that: It includes an automatic detaching connector and a winding mechanism arranged on the charging pile; the automatic detaching connector includes a charging pile cable connector arranged on the charging pile, a charging gun cable connector is plugged into the upper side of the charging pile cable connector, a clamping mechanism and a pop-up mechanism are provided between the charging pile cable connector and the charging gun cable connector, the clamping mechanism includes a push-pull electromagnetic switch installed on the charging pile cable connector, the output shaft of the push-pull electromagnetic switch penetrates into the charging pile cable connector and is connected with a wedge block, a wedge-shaped opening matching with the wedge block is provided on the charging gun cable connector, when the push-pull electromagnetic switch is powered off, the wedge block extends into the wedge-shaped opening under the action of elasticity, and when the push-pull electromagnetic switch is powered on, the wedge block retracts under the action of electromagnetic force, a charging pile cable is installed in the charging pile cable connector, a charging gun cable is installed in the charging gun cable connector, the charging pile cable and the charging gun cable are plugged in and connected, and after the clamping mechanism is released The cam is provided with a first end for camming the second end of the charging pile, and the second end for camming the second end of the charging pile is provided with a first end for camming the second end of the charging pile, and the second end for camming the second end of the charging pile is provided with a second end for camming the second end of the charging pile.

2. A connection device for a new energy vehicle charging pile according to claim 1, characterized in that: A diameter-changing rod is formed at the end of the winding rod on the first winding disk, and a diameter-changing groove is formed at the end of the winding rod of the second winding disk, and the diameter-changing rod is adapted to the diameter-changing groove.

3. A connection device for a new energy vehicle charging pile according to claim 2, characterized in that: A first end cover is rotatably mounted on the outer side of the first winding disc via a bearing, and a second end cover is rotatably mounted on the outer side of the second winding disc via a bearing. The first end cover and the second end cover are fixedly mounted on the charging pile via a clamping mechanism.

4. A connection device for a new energy vehicle charging pile according to claim 3, characterized in that: A staged pause mechanism is arranged between the first winding disk and the first end cover, and the staged pause mechanism includes an arcuate ring sleeve fixed to the outer side of the first winding disk, a rotating ring is arranged on the arcuate ring sleeve, and an outer ratchet is arranged on the outer side of the rotating ring. A fixed ring is fixed to the inner side of the first end cover, and an inner ratchet is arranged on the inner side of the fixed ring. The arcuate ring sleeve drives the rotating ring to rotate, and the rotating ring moves toward the outer ratchet side under the action of centrifugal force. When the outer ratchet is engaged with the inner ratchet, the first winding disk is locked with the first end cover.

5. A connection device for a new energy vehicle charging pile according to claim 4, characterized in that: A coil spring reset mechanism is provided between the second winding disk and the second end cover. The coil spring reset mechanism includes a coil spring provided between the second end cover and the second winding disk. One end of the coil spring is fixedly connected to the second winding disk, and the other end is fixedly connected to the second end cover.

6. A connection device for a new energy vehicle charging pile according to claim 1, characterized in that: The clamping mechanism includes a lower fixed seat and an upper fixed seat, a lower arc groove is arranged on the upper side of the lower fixed seat, a guide rod is slidably connected to the upper fixed seat, a return spring is arranged on the guide rod and the upper fixed seat, an elastic seat is installed at the lower end of the guide rod, an upper arc groove is arranged on the lower side of the elastic seat, and a winding mechanism is clamped between the lower arc groove and the upper arc groove.

7. A connection device for a new energy vehicle charging pile according to claim 1, characterized in that: The winding rod is also provided with an extension ring, and a plurality of tie bars are provided on a side opposite to the extension ring, and the tie bars form a winding surface which gradually increases from the winding rod to the extension ring.

8. A cable for a new energy vehicle charging pile, based on the connection device according to any one of claims 1 to 7, characterized in that: The utility model comprises a charging gun, which is connected to a winding section of a charging gun cable wound on a winding drum, wherein one end of the winding section connected to the charging gun is a movable end, and one end connected to the charging pile is a fixed end, and the fixed end is connected to the plug-in section through an electric slip ring, and the plug-in section is connected to a male plug connector and a charging gun cable connector.

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