Charging pile cable automatic storage device

Abstract

The invention relates to the technical field of cable storage, in particular to a charging pile cable automatic storage device which comprises a charging pile body, storage devices are fixedly connected to the two sides of the charging pile body through bolts, a cable is movably connected to the front end face of each storage device, and a charging gun is fixed to the other end of each cable. An opening type fixing seat is fixed to the upper side of the front end face of the storage device, and the charging gun is placed in the fixing seat. The storage device comprises two shells connected through screws, the rear end faces of the shells are connected with a fixing box through screws, and the middle of the rear end face of the fixing box is fixedly connected with a second motor. According to the cable storage device for connecting the charging gun and the charging pile, the problem that a cable is damaged and aged due to a traditional cable winding mode is solved; according to the cable storage device, the defect that a cable hanging type storage device in the prior art does not protect a cable is overcome, the problem can be effectively solved by adopting an expansion storage mode, and the cable can be effectively protected.

Description

Technical Field

[0001] The present invention relates to the technical field of cable storage, and in particular to an automatic cable storage device for a charging pile. Background Art

[0002] With the rapid development of the new energy vehicle industry, charging piles, as an important infrastructure for new energy vehicles, are constantly increasing in quantity and performance requirements. During the charging process of new energy vehicles, the problem of cable storage has gradually become the focus of attention;

[0003] In the prior art, generally, a cable winding device is added outside the charging pile to wind and store the charging cable. However, in actual use, in general, a relatively long length of the charging cable is reserved to meet the charging needs at a long distance from the vehicle parking position. During the charging process of new energy vehicles, the charging cable is pulled to cooperate with the charging gun to charge the vehicle. However, part of the cable is still wound inside the storage device. When the charging pile outputs a large power current through the cable later, the cable wound spirally inside the storage device will generate an eddy current phenomenon, that is, when an alternating current passes through the cable, an alternating magnetic field will be generated around it. For a spirally wound cable, each turn of the cable is in the alternating magnetic field generated by other turns. According to the law of electromagnetic induction, when the magnetic flux passing through a closed loop changes, an induced electromotive force and an induced current will be generated in the loop. The eddy current flowing in the cable conductor will generate Joule heat, which is an additional energy loss, will increase the temperature of the cable, reduce the power transmission efficiency of the cable, cause waste of energy, and will also accelerate the aging process of the insulating material as the cable temperature rises, reduce the insulation performance, and shorten the service life of the cable. Long-term high temperature may also cause the insulating material to crack and fall off, thus triggering electrical faults such as short circuits and affecting the safe operation of the power system.

[0004] Therefore, an automatic cable storage device for a charging pile is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic cable storage device for a charging pile. The cable storage device designed in this application for connecting the charging gun and the charging pile gets rid of the problems of cable damage and aging that occur in the traditional cable winding type, and replaces the defect of no protection for the cable in the hanging type storage device in the prior art. By adopting the expansion storage method in this application, the above problems can be effectively solved, and effective protection can be provided for the cable, so as to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: An automatic cable retractor for a charging pile, comprising a charging pile main body, wherein retractors are bolted and fixed on both sides of the charging pile main body, a cable is movably connected to the front end face of the retractor, and a charging gun is fixed to the other end of the cable. An open fixing seat is fixed at the upper side position of the front end face of the retractor, and the charging gun is placed inside the fixing seat;

[0007] The retractor includes two externally threaded shells, and a fixing box is screwed to the rear end face of the shell. A second motor is fixedly connected to the middle of the rear end face of the fixing box. A driving cavity is formed between the fixing box and the shell. Inner fixing plates are symmetrically and fixedly connected inside the two shells. Reel wheels are equidistantly distributed on the surfaces of the two inner fixing plates. The reel wheels on the two inner fixing plates are staggeredly distributed, and the cable is distributed on the surfaces of the reel wheels. The reel wheels are movably connected to the inner fixing plates.

[0008] Preferably, sliding grooves are vertically formed on the inner fixing plates, and connecting shafts are slidably connected inside the sliding grooves. One end of the connecting shaft is fixedly connected to the reel wheel.

[0009] Preferably, an activity space is reserved between the inner fixing plate and the shell. A cross bar is slidably connected to the inner wall of the shell. The other end of the connecting shaft is fixedly connected to the cross bar. A displacement groove is formed on the rear end face of the shell. One end of the cross bar extends into the fixing box through the displacement groove.

[0010] Preferably, racks are arranged at positions corresponding to the displacement grooves inside the fixing box. The racks are fixedly connected to one ends of the cross bars. The two racks are vertically staggeredly distributed.

[0011] Preferably, a main gear is meshed inside the two racks. The output shaft of the second motor is fixedly connected to the main gear through a connecting flange.

[0012] Preferably, a clamp is fixedly connected to the inner wall of the inner fixing plate. One end of the cable is fixed by the clamp. One end of the cable extends out of the retractor through the clamp and is connected to the conductive unit inside the charging pile main body. A cleaning device is arranged at the position near the lower side of the front end face of the retractor. The other end of the cable extends out of the retractor through the cleaning device after passing through the reel wheel.

[0013] Preferably, the cleaning device includes an outer sleeve that penetrates through one end of the shell and extends into the shell. The other end of the outer sleeve is exposed outside the shell. An inner cleaning cylinder is rotatably connected inside the outer sleeve. The cable passes through the inner cleaning cylinder, and a cleaning cotton board with a spiral structure is fixed inside the inner cleaning cylinder.

[0014] Preferably, an installation box is fixed at the corresponding position of the bottom of the outer shell and the outer sleeve, and a first motor is fixed inside the installation box. A first gear is fixed to the output shaft of the first motor. A connection groove is formed at the position corresponding to the first gear on the outside of the outer sleeve. A toothed ring fixed to the inner cleaning cylinder is rotatably connected in the connection groove, and the first gear is meshed with the toothed ring.

[0015] Preferably, a rotating groove is formed on the outside of the winding wheel, and an outer sliding ring is rotatably connected in the rotating groove. A ball is rotatably connected between the outer sliding ring and the rotating groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The cable retractor designed in the present application for connecting a charging gun and a charging pile gets rid of the problem of cable damage and aging that occurs in the traditional cable winding type, and replaces the defect of no protection for the cable in the hanging wire type retractor in the prior art. By adopting the expansion and retraction method in the present application, the above problems can be effectively solved, and effective protection can be provided for the cable.

[0018] 2. The retractor in the present application also has the effect of cleaning the surface of the cable, reducing the attachment of stains on the cable surface, and scraping and cleaning the foreign objects that are contaminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a view of the overall structure of the present invention;

[0021] Figure 2 It is a rear view of the overall structure of the present invention;

[0022] Figure 3 It is an exploded front view of the retractor of the present invention;

[0023] Figure 4 It is an exploded view of the retractor of the present invention;

[0024] Figure 5 It is for the present invention Figure 4 rear view;

[0025] Figure 6 It is a structural view of the winding wheel and the inner fixing plate of the present invention;

[0026] Figure 7Structural view of the retracting wheel of the present invention;

[0027] Figure 8 Structural view of the cleaning device of the present invention.

[0028] Explanation of reference numerals:

[0029] 1, charging pile main body; 2, storage device; 21, outer shell; 22, fixed box; 23, inner fixing plate; 24, retracting wheel; 241, outer sliding ring; 242, ball; 243, rotating groove; 244, connecting shaft; 25, main gear; 26, rack; 27, sliding groove; 28, displacement groove; 29, cross bar; 3, cable; 4, fixed seat; 5, charging gun; 6, cleaning device; 61, mounting box; 62, outer sleeve; 63, inner cleaning cylinder; 64, gear one; 65, motor one; 66, connecting groove; 67, tooth ring; 7, motor two. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 to 8 , the present invention provides a technical solution:

[0032] An automatic cable storage device 2 for a charging pile, including a charging pile main body 1, two sides of the charging pile main body 1 are bolted and fixed with a storage device 2, the front end face of the storage device 2 is movably connected with a cable 3, and the other end of the cable 3 is fixed with a charging gun 5. An open-type fixed seat 4 is fixed at the upper side position of the front end face of the storage device 2, and the charging gun 5 is placed inside the fixed seat 4;

[0033] The storage device 2 includes two outer shells 21 connected by screws, and the rear end face of the outer shell 21 is screwed with a fixed box 22. The middle of the rear end face of the fixed box 22 is fixedly connected with a motor two 7. A driving cavity is formed between the fixed box 22 and the outer shell 21. Two inner fixing plates 23 are symmetrically and fixedly connected inside the two outer shells 21. Retracting wheels 24 are equidistantly distributed on the surfaces of the two inner fixing plates 23. The retracting wheels 24 on the two inner fixing plates 23 are staggeredly distributed, and the cable 3 is distributed on the surface of the retracting wheel 24. The retracting wheel 24 is movably connected with the inner fixing plate 23.

[0034] Specifically, a sliding groove 27 is vertically formed on the inner fixing plate 23, and a connecting shaft 244 is slidably connected inside the sliding groove 27. One end of the connecting shaft 244 is fixedly connected to the retracting wheel 24. An activity space is reserved between the inner fixing plate 23 and the outer shell 21. A cross bar 29 is slidably connected to the inner wall of the outer shell 21. The other end of the connecting shaft 244 is fixedly connected to the cross bar 29. A displacement groove 28 is formed on the rear end face of the outer shell 21. One end of the cross bar 29 extends into the fixing box 22 through the displacement groove 28. A rack 26 is arranged at a position corresponding to the displacement groove 28 inside the fixing box 22. The rack 26 is fixedly connected to one end of the cross bar 29. The two racks 26 are vertically offset. A main gear 25 is meshed inside the two racks 26. The output shaft of the second motor 7 is fixedly connected to the main gear 25 through a connecting flange.

[0035] By adopting the above technical solution, during operation, a sensor is installed in the open-type fixing seat 4. The sensor is signal-connected to the controller inside the charging pile through a cable or a wireless communication module. When the user takes out the charging gun 5 in the fixing seat 4 and the charging gun 5 is separated from the fixing seat 4, the controller inside the charging pile controls the second motor 7 to rotate. The second motor 7 drives the main gear 25 to rotate counterclockwise through the output shaft. The two racks 26 meshed with the main gear 25 move towards each other until the two racks 26 are parallel and corresponding to each other and are distributed on both sides of the main gear 25. At this time, the cross plate fixed to the rack 26 slides stably between the inner fixing plate 23 and the outer shell 21 and moves stably through the displacement groove 28. A slide rail can also be added to keep the cross plate moving stably. The retracting wheel 24 fixed to the cross plate through the connecting shaft 244 is displaced to the middle position of the inner fixing plate 23. At this time, the user can normally take out the charging gun 5 and pull the cable 3. The cable 3 inside the outer shell 21 extends outwards, and then the charging gun 5 is used to charge the new energy vehicle.

[0036] Specifically, a clamp is fixedly connected to the inner wall of the inner fixing plate 23. One end of the cable 3 is fixed by the clamp. One end of the cable 3 extends through the clamp and out of the storage device 2 to be connected to the internal conductive unit of the charging pile main body 1. A cleaning device 6 is arranged at a position near the lower side of the front end face of the storage device 2. The other end of the cable 3 extends out of the storage device 2 through the take-up wheel 24 and the cleaning device 6. The cleaning device 6 includes an outer sleeve 62 with one end passing through the outer shell 21 and extending into the outer shell 21, and the other end of the outer sleeve 62 is exposed outside the outer shell 21. An inner cleaning cylinder 63 is rotatably connected inside the outer sleeve 62. The cable 3 passes through the inner cleaning cylinder 63, and a cleaning cotton board with a spiral structure is fixed inside the inner cleaning cylinder 63. An installation box 61 is fixed at a position corresponding to the outer sleeve 62 at the bottom of the outer shell 21, and a first motor 65 is fixed inside the installation box 61. A first gear 64 is fixed to the output shaft of the first motor 65. A connection groove 66 is formed at a position corresponding to the first gear 64 on the outside of the outer sleeve 62. A tooth ring 67 fixed to the inner cleaning cylinder 63 is rotatably connected inside the connection groove 66. The first gear 64 is meshed with the tooth ring 67.

[0037] By adopting the above technical solution, during the displacement of the cable 3 into the inner part of the outer shell 21, the controller controls the first motor 65 to drive the first gear 64 to rotate. The first gear 64 drives the tooth ring 67 to rotate, so that the inner cleaning cylinder 63 rotates in the outer sleeve 62. Then, when the cable 3 passes through the inner cleaning cylinder 63, the rotation of the inner cleaning cylinder 63 drives the cleaning cotton board with a spiral structure inside to rotate, wiping and cleaning the stains on the surface of the cable 3, and preventing the adhered impurity particles from peeling off. The particles fall into the gaps of the cleaning cotton board with a spiral structure. Through the rotation of the cleaning cotton board, the impurity particles are discharged from the cleaning cotton board and out of the inner cleaning cylinder 63, completing the cleaning of the cable 3.

[0038] Specifically, a rotating groove 243 is formed on the outside of the take-up wheel 24, and an outer sliding ring 241 is rotatably connected inside the rotating groove 243. A ball 242 is rotatably connected between the outer sliding ring 241 and the rotating groove 243.

[0039] Working principle:

[0040] During operation, a sensor is installed inside the open fixing base 4. The sensor is signal-connected to the controller inside the charging pile through a cable or a wireless communication module. When the user takes the charging gun 5 inside the fixing base 4 and the charging gun 5 detaches from the fixing base 4, the controller inside the charging pile controls the rotation of the second motor 7. The second motor 7 drives the main gear 25 to rotate counterclockwise through the output shaft. The two racks 26 meshed with the main gear 25 move towards each other until the two racks 26 are parallel to each other and distributed on both sides of the main gear 25. At this time, the crossbar 29 fixed to the rack 26 slides stably between the inner fixing plate 23 and the outer shell 21, and moves stably through the displacement groove 28. A slide rail can also be added to keep the crossbar 29 moving stably. The reel 24 fixed to the crossbar 29 through the connecting shaft 244 is displaced to the middle position of the inner fixing plate 23. At this time, the user can normally take the charging gun 5 to pull the cable 3, and the cable 3 inside the outer shell 21 extends outwards. Then, the charging gun 5 is used to charge the new energy vehicle;

[0041] After subsequent charging is completed, when the charging gun 5 detaches from the charging port of the new energy vehicle, generally, the charging gun 5 and the charging port are provided with sensors. When the controller senses that the charging gun 5 has completed detachment from the vehicle, the controller controls the second motor 7 to rotate clockwise, drives the two racks 26 to move in opposite directions through the main gear 25. At this time, one of the two crossbars 29 inside the outer shell 21 moves upwards and the other moves downwards, thereby driving the reels 24 on the two misaligned inner fixing plates 23 to move upwards and downwards respectively. The cable 3 is expanded by the reels 24, and then the cable 3 exposed in the storage cavity is pulled, completing the storage of the cable 3;

[0042] In order to reduce the frictional resistance between the reel 24 and the cable 3, avoid damage to the cable 3, and ensure the smooth movement of the reel 24, a rotating groove 243 is designed outside the reel 24 in this application. The rotating groove 243 cooperates with the ball 242 to enable the outer sliding ring 241 to rotate on the main body of the reel 24, and cooperate with the displacement movement change generated by the expansion of the cable 3;

[0043] And during the process of the cable 3 moving into the outer shell 21, the controller controls the first motor 65 to drive the first gear 64 to rotate. The first gear 64 drives the toothed ring 67 to rotate, so that the inner cleaning cylinder 63 rotates in the outer sleeve 62. Then, when the cable 3 passes through the inner cleaning cylinder 63, the inner cleaning cylinder 63 rotates to drive the cleaning cotton board with a spiral structure inside to rotate, wipe and clean the stains on the surface of the cable 3, and prevent the adhered impurity particles from peeling off. The particles fall into the gaps of the spiral cleaning cotton board. Through the rotation of the cleaning cotton board, the impurity particles are discharged from the cleaning cotton board and discharged from the inner cleaning cylinder 63, completing the cleaning of the cable 3.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic charging pile cable storage device, comprising a charging pile body (1), characterized in that: A receiver (2) is fixedly connected by bolts on both sides of the charging pile body (1); a cable (3) is movably connected to the front end surface of the receiver (2); a charging gun (5) is fixed to the other end of the cable (3); an open fixing seat (4) is fixed to the upper side of the front end surface of the receiver (2); and the charging gun (5) is placed inside the fixing seat (4); The storage device (2) comprises two outer shells (21) connected by screws, and a fixing box (22) is screwed to the rear end face of the outer shell (21), a motor 2 (7) is fixedly connected to the middle of the rear end face of the fixing box (22), a driving cavity is formed between the fixing box (22) and the outer shell (21), an inner fixing plate (23) is symmetrically fixedly connected to the inside of the two outer shells (21), and winding wheels (24) are equidistantly distributed on the surfaces of the two inner fixing plates (23), the winding wheels (24) on the two inner fixing plates (23) are staggered, and the cables (3) are distributed on the surfaces of the winding wheels (24), and the winding wheels (24) are movably connected to the inner fixing plates (23).

2. The automatic charging pile cable storage device according to claim 1, characterized in that: A sliding groove (27) is vertically provided on the inner fixed plate (23), and a connecting shaft (244) is slidably connected inside the sliding groove (27), and one end of the connecting shaft (244) is fixedly connected to the winding wheel (24).

3. The automatic charging pile cable storage device according to claim 2, characterized in that: A movable space is reserved between the inner fixing plate (23) and the outer shell (21); a cross bar (29) is slidably connected to the inner wall of the outer shell (21); the other end of the connecting shaft (244) is fixedly connected to the cross bar (29); a displacement groove (28) is provided on the rear end surface of the outer shell (21); one end of the cross bar (29) extends into the fixing box (22) through the displacement groove (28).

4. The automatic charging pile cable storage device according to claim 3, characterized in that: A rack (26) is arranged inside the fixed box (22) at a position corresponding to the displacement groove (28), the rack (26) is fixedly connected to one end of the cross bar (29), and the two racks (26) are staggered in the upper and lower parts.

5. The automatic charging pile cable storage device according to claim 4, characterized in that: The two racks (26) are internally meshed with a main gear (25), and the output shaft of the second motor (7) is fixedly connected to the main gear (25) via a connecting flange.

6. The automatic charging pile cable storage device according to claim 5, characterized in that: A clamp is fixedly connected to the inner wall of the inner fixing plate (23), and one end of the cable (3) is fixed by the clamp. One end of the cable (3) passes through the clamp and extends out of the receiver (2) to be connected to the internal conductive unit of the charging pile body (1). A cleaning device (6) is arranged at a position close to the lower side of the front end surface of the receiver (2), and the other end of the cable (3) passes through the cleaning device (6) and extends out of the receiver (2) via a reel (24).

7. The automatic charging pile cable storage device according to claim 6, characterized in that: The cleaning device (6) comprises an outer sleeve (62) having one end penetrating through the outer shell (21) and extending into the inner part of the outer shell (21), the other end of the outer sleeve (62) being exposed outside the outer shell (21), the inner part of the outer sleeve (62) being rotatably connected to an inner cleaning cylinder (63), the cable (3) passing through the inner cleaning cylinder (63), and a cleaning cotton plate with a spiral structure being fixed inside the inner cleaning cylinder (63).

8. The automatic charging pile cable storage device according to claim 7, characterized in that: A mounting box (61) is fixed at a position corresponding to the bottom of the outer sleeve (21) and the outer sleeve (62), and a motor (65) is fixed inside the mounting box (61). A gear (64) is fixed to the output shaft of the motor (65). A connecting groove (66) is provided on the outside of the outer sleeve (62) at a position corresponding to the gear (64). A gear ring (67) fixed to the inner cleaning cylinder (63) is rotatably connected inside the connecting groove (66), and the gear (64) is meshingly connected to the gear ring (67).

9. The automatic charging pile cable storage device according to claim 8, characterized in that: A rotating groove (243) is provided on the outside of the reel-up wheel, and an outer sliding ring (241) is rotatably connected in the rotating groove, and a ball (242) is rotatably connected between the outer sliding ring (241) and the rotating groove (243).

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