Suspension type alternating current charging device and automatic folding and unfolding method

Abstract

The invention provides a suspension type alternating current charging device and an automatic folding and unfolding method. The charging device comprises a charging gun; a power line extends from one end of the AC charging pile, and a charging line extends from the other end; the wire coil comprises a first half wire coil and a second half wire coil which are oppositely buckled into a whole, and a containing cavity is formed in the butt joint position of the two half wire coils; the alternating current charging pile is arranged in the accommodating cavity, and a power line guide groove and a charging line guide groove which are correspondingly communicated with the accommodating cavity are respectively formed in the butt joint part; the power line penetrates out along the power line guide groove to be wound on the first half wire coil, and the charging line penetrates out along the charging line guide groove to be wound on the second half wire coil to be connected with the charging gun. The electric winch is suspended on a ceiling or a cross beam and is used for driving the wire coil to lift through a traction rope so as to take up and pay off the charging wire in an anti-torsion manner; the radio sensor is used for sensing arrival or departure of a vehicle, and the radio sensor is in communication connection with the electric winch; the structure is simple and reliable, and automatic lifting based on vehicle parking can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging systems, and in particular to a suspended alternating current charging device and an automatic retracting and releasing method. Background Art

[0002] The development of electric vehicles has spurred the establishment of corresponding charging facilities. At present, the more common electric vehicle charging mode is the electric vehicle charging station. The car needs to drive into a fixed charging station, which has poor timeliness. In the parking lot, the traditional vertical charging pile can only be set up at the edge of the parking lot and rely on walls or columns for installation. If there are no walls or columns around the parking space, the vertical charging pile cannot be installed.

[0003] A Chinese patent with patent number ZL2015100801305 discloses a suspended electric vehicle charging system in a parking lot, including a charging system, a cable, a cable storage device, and a handheld charging gun; the cable is stored in the cable storage device, the cable is connected to the charging system and the handheld charging gun, and the cable storage device is fixed on the beam above the parking space or on the wall on the side of the parking space; the cable storage device is a cable recovery system with automatic retraction of the stretched cable or an elastic system or electrical system that can store the cable; although the patent discloses the use of a suspension setting, there are still the following problems:

[0004] 1. It is necessary to manually pull out the cable from its cable storage structure; after charging is completed, unplug the charging gun, and the cable storage structure automatically recycles the cable. Manually pulling out the cable increases the operation steps and also poses the risk of theft;

[0005] 2. The specific cable storage structure is not disclosed. The traditional cable recovery system or elastic system that automatically retracts and stretches the cable usually sets a conductive ring and a brush inside the cable drum to prevent the cable from twisting, which makes the cable drum structure complex, with a high failure rate and high manufacturing cost.

[0006] Therefore, there is an urgent need for a suspended AC charging device and an automatic retracting and releasing method, which has a simple and reliable structure and can be automatically raised and lowered based on the parking of the vehicle. Summary of the invention

[0007] The purpose of the present invention is to provide a suspended AC charging device and an automatic retracting and releasing method, aiming to solve the technical problems of complex structure, cumbersome operation and high manufacturing cost of traditional charging devices.

[0008] To achieve the above objectives, in a first aspect, the present invention provides a suspension type AC charging device, comprising:

[0009] Charging gun, used to connect to the vehicle's energy interface for charging;

[0010] The AC charging pile is used to provide AC power of preset power, with a power cord connected to the power source extending from one end and a charging cord connected to the charging gun extending from the other end;

[0011] A wire reel, comprising a first half wire reel and a second half wire reel which are buckled together, wherein a receiving cavity is provided at the joint of the first half wire reel and the second half wire reel; the AC charging pile is arranged in the receiving cavity, and a power line guide groove and a charging line guide groove which are connected to the receiving cavity are provided at the joint of the first half wire reel and the second half wire reel respectively;

[0012] The power line passes through the power line guide groove and is wound on the first half wire drum, and the charging line passes through the charging line guide groove and is wound on the second half wire drum and then connected to the charging gun;

[0013] Two electric winches are suspended from the ceiling or beams and are used to drive the cable drum to rise and fall through the traction rope to prevent the charging cable from twisting and retracting;

[0014] A radio sensor is arranged on any of the electric winches and is used to sense the arrival or departure of the corresponding vehicle. The radio sensor is communicatively connected with the electric winches and is used to control the descent or ascent of the two electric winches.

[0015] As a further improvement of the above solution, the first half wire drum includes a first half drum and a first flange arranged at one end of the first half drum, and the second half wire drum includes a second half drum and a second flange arranged at one end of the second half drum;

[0016] The first half roll is provided with a first receiving groove at the end away from the flange, and the second half roll is provided with a second receiving groove at the end away from the flange. The first half roll and the second half roll can be detachably buckled together, and the first receiving groove and the second receiving groove matched with each other constitute the receiving cavity.

[0017] The first flange and the second flange reels are respectively provided with traction rope grooves for receiving and releasing the traction rope.

[0018] As a further improvement of the above solution, the main projection of the accommodating cavity is a square that matches the shape of the AC charging pile;

[0019] The power line guide groove and the charging line guide groove are respectively arranged at two opposite corners of the square receiving groove.

[0020] As a further improvement of the above solution, a traction rope fixing hole is provided in the traction rope groove, so that the traction rope end away from the electric winch can pass through and be fixedly connected to the wire drum.

[0021] As a further improvement of the above scheme, the electric winch includes an electric drum and a traction rope having one end fixed to the electric drum and wound thereon; the other end of the traction rope passes through the rope fixing hole and is fixed on the corresponding half-reel;

[0022] The two electric winches are respectively arranged corresponding to the flange of the first half wire drum and the flange of the second half wire drum.

[0023] As a further improvement of the above solution, the radio sensor senses the arrival or departure of the vehicle by matching the vehicle's Bluetooth or the Bluetooth on the owner's own mobile device through the Bluetooth protocol.

[0024] As a further improvement of the above solution, a plug-in sensor is provided on the charging gun, and the plug-in sensor is communicatively connected with the electric winch, and is used to coordinate with the radio sensor to control the descent or ascent of the two electric winches.

[0025] As a further improvement of the above solution, the suspended AC charging device also includes a controller, the wireless sensor and the plug-in sensor are respectively communicatively connected to the controller, and the controller is also electrically connected to the electric winch.

[0026] In a second aspect, the present invention further provides a method for automatically retracting and releasing a suspended AC charging device as provided in the first aspect, the steps comprising:

[0027] S1. When the radio sensor senses a vehicle, the controller controls the two electric winches to rotate forward to release the traction rope. As the traction rope is released, the wire drum rotates while releasing the charging wire and the power cord stored at both ends of the charging pile. Until the charging gun on it reaches a first preset height, the two electric winches stop rotating.

[0028] S2. When the radio sensor senses that the pairing signal is lost, or the charging gun does not detect the insertion signal within the preset time, it is judged that the vehicle has left, and the controller controls the two electric winches to rotate in opposite directions to retract the traction rope. As the traction rope is retracted, the cable drum rotates while storing the charging cable and power cord at both ends of the charging pile. Until the cable drum rises to a second preset height, the two electric winches stop rotating.

[0029] As a further improvement of the above solution, in step S1, when the charging gun reaches the first preset height, if the user inserts the charging gun into the vehicle energy interface, the charging gun detects the insertion signal, and the charging pile starts to charge the vehicle;

[0030] If the user does not insert the charging gun into the vehicle energy interface and the charging gun does not detect the insertion signal within the preset time, step S2 is executed.

[0031] As a further improvement of the above scheme, when the two electric winches rotate, when releasing or storing the traction rope, the traction rope is guided by the traction rope groove, and the wire drum rotates to release or store the charging wire and the power cord thereon.

[0032] Since the present invention adopts the above technical solution, the beneficial effects of this application are:

[0033] The present invention provides a suspended AC charging device, comprising an electric winch that can be hoisted and set on a ceiling or a beam, and also comprising a wire drum, wherein the wire drum comprises a first half wire drum and a second half wire drum that can be buckled and integrated into one, and an AC charging pile is arranged in a receiving groove at the joint of the two half wire drums, so that the power cord of the AC charging pile is wound on the first half wire drum, and the charging cord is wound on the second half wire drum, which can reduce the length of the two sections of the line, and the electric winch drives the wire drum to rise and fall through a traction rope so that the power cord and the charging cord can be effectively anti-twisted and retracted; in addition, the charging pile can be hidden in the wire drum, which increases the aesthetics and makes the installation of the suspended AC charging device convenient, and only needs to hoist the electric winch on the ceiling or the beam, which effectively solves the installation requirements of the charging device of the electric vehicle owner who has no walls available around, and the device is small and does not occupy the ground space;

[0034] In addition, the present invention is also provided with a radio sensor for sensing the arrival or departure of a vehicle, and the radio sensor is communicatively connected with the electric winch. When the radio sensor senses the arrival of a vehicle, the controller that receives the signal controls the electric winch to rotate forward, and drives the wire drum to rotate while releasing the charging wire and the power cord thereon, until the charging gun is lowered to a preset height for convenient charging of the vehicle, the electric winch stops rotating, and the owner charges his vehicle through the charging gun. Correspondingly, when the radio sensor cannot sense a signal matching the vehicle, or the charging gun does not detect an insertion signal within a preset time, it is judged that the vehicle has left, and the charging gun is connected again. The electric winch is started to rotate in the reverse direction, and the traction rope is gradually stored on its electric reel, and at the same time, the charging line and the power line stored on the wire drum are driven, until the wire drum is raised to a second preset height, and the electric winch stops rotating; the wire reeling and unreeling of the entire charging device can be automatically performed, and the user only needs to plug and unplug the charging gun to the vehicle energy interface, which reduces the charging operation steps and can encourage users to develop a good habit of charging when parking, so that electric vehicles can be connected to the power grid for a longer time, and the excess energy storage capacity of electric vehicles can be fully utilized for the exchange of electric energy, which can alleviate the short-term load pressure of power grid equipment and improve the power grid's ability to absorb clean energy;

[0035] Based on the small size of the AC charging pile, the present invention embeds it into the joint of the two half-reels of the wire reel. The power cord and the charging cord on the AC charging pile are respectively wound on the corresponding half-reels. Such an arrangement prevents the power cord and the charging cord from being entangled with each other, and can also reduce their respective retraction and extension lengths, thereby avoiding cable twisting from the root, thereby ensuring charging stability and higher power transmission capacity. Compared with traditional cable automatic winches, which usually set conductive rings and brushes in the wire reel to prevent the disadvantages caused by twisting, the present invention can avoid the disadvantages caused by cable twisting without setting parts such as conductive rings and brushes, and has a simple structure, low manufacturing cost, and is not prone to failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0037] Figure 1 It is a three-dimensional schematic diagram of a suspended AC charging device disclosed in the present invention;

[0038] Figure 2 It is a three-dimensional schematic diagram of a suspended AC charging device (excluding the second half of the cable drum and the charging gun) disclosed in the present invention;

[0039] Figure 3 It is a cross-sectional schematic diagram of the wire drum disclosed in the present invention;

[0040] Figure 4 It is a three-dimensional schematic diagram of the first half of the wire drum disclosed in the present invention;

[0041] Figure 5 It is a front view schematic diagram of the first half line disk disclosed in the present invention;

[0042] Figure 6 for Figure 5 AA cross-sectional view of .

[0043] Reference numerals:

[0044] 1. Charging gun; 2. AC charging pile; 21. Power cord; 22. Charging cord; 3. Wire reel; 31. First half wire reel; 311. First half drum; 312. First flange; 313. First receiving groove; 32. Second half wire reel; 321. Second half drum; 322. Second flange; 323. Second receiving groove; 33. Traction rope groove; 4. Accommodation cavity; 5. Power cord guide groove; 6. Charging cord guide groove; 7. Electric winch; 8. Traction rope.

[0045] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0048] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0049] Furthermore, the technical solutions between the various embodiments of the present invention may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] Example 1

[0051] See also Figure 1-Figure 2 The present invention provides a suspended AC charging device, comprising:

[0052] The charging gun 1 is used to connect with the energy interface of the vehicle for charging. The charging gun 1 is provided with a plug-in sensor for sensing the plug-in information of the energy interface of the vehicle; the plug-in sensor is connected to the electric winch 7 for communication, and is used to cooperate with the radio sensor to control the descent or ascent of the two electric winches 7;

[0053] The AC charging pile 2 is used to provide AC power of preset power, with a power cord 21 extending from one end thereof and a charging cord 22 extending from the other end thereof for connecting to the charging gun 1;

[0054] Reel 3, see Figure 3-Figure 6, including a first half wire drum 31 and a second half wire drum 32 which are buckled together, and a receiving cavity 4 is provided at the joint of the first half wire drum 31 and the second half wire drum 32; the AC charging pile 2 is arranged in the receiving cavity 4, and a power line guide groove 5 and a charging line guide groove 6 which are connected to the receiving cavity 4 are also provided at the joint of the first half wire drum 31 and the second half wire drum 32;

[0055] The power line 21 passes through the power line guide groove 5 and is wound on the first half wire drum 31, and the charging line 22 passes through the charging line guide groove 6 and is wound on the second half wire drum 32 and then connected to the charging gun 1;

[0056] Two electric winches 7 are suspended from the ceiling or beams and are used to drive the cable drum 3 to rise and fall through the traction rope 8 so as to prevent the charging cable 22 from twisting and being retracted;

[0057] A radio sensor, arranged on any of the electric winches 7, for sensing the arrival or departure of a corresponding vehicle, the radio sensor being communicatively connected with the electric winches 7, for controlling the descent or ascent of the two electric winches 7;

[0058] A controller, the wireless sensor and the plug sensor are respectively connected to the controller for communication, and the controller is also electrically connected to the electric winch 7;

[0059] In the present invention, the electric winch 7 can be hoisted and set on the ceiling or beam, the wire drum 3 includes a first half wire drum 31 and a second half wire drum 32 that can be buckled into one, and the AC charging pile 2 is set in the receiving groove at the joint of the two half wire drums 3, so that the power cord 21 of the AC charging pile 2 is wound on the first half wire drum 31, and the charging line 22 is wound on the second half wire drum 32, which can reduce the length of the two sections of the line, and the electric winch 7 drives the wire drum 3 to rise and fall through the traction rope 8 so that the power cord 21 and the charging line 22 can be effectively anti-twisted and retracted; in addition, the charging pile can be hidden in the wire drum 3, which increases the aesthetics and makes the suspension type AC charging device easy to install. It only needs to hoist the electric winch 7 on the ceiling or beam, which effectively solves the installation needs of the charging device of the electric car owner who has no walls available around, and the equipment is small and does not occupy the ground space;

[0060] In addition, the present invention is also provided with a radio sensor for sensing the arrival or departure of a vehicle, and the radio sensor is communicatively connected with the electric winch 7. When the radio sensor senses the arrival of a vehicle, the controller that receives the signal controls the electric winch 7 to rotate forward, and drives the cable drum 3 to rotate while releasing the charging line 22 and the power line 21 thereon, until the charging gun 1 is lowered to a preset height for convenient charging of the vehicle, the electric winch 7 stops rotating, and the owner charges his vehicle through the charging gun 1; correspondingly, when the radio sensor cannot sense a signal matching the vehicle, or the charging gun 1 does not detect an insertion signal within a preset time, it is judged that the vehicle has left, and the charging gun 1 is charged again. The electric winch 7 is started to rotate in the reverse direction, and the traction rope 8 is gradually stored on its electric reel, while driving the cable drum 3 to store the charging cable 22 and the power cable 21 thereon, until the cable drum 3 is raised to the second preset height, and the electric winch 7 stops rotating; the reeling and unreeling of the entire charging device can be performed automatically, and the user only needs to plug and unplug the charging gun 1 to the vehicle energy interface, which reduces the charging operation steps and can encourage users to develop a good habit of charging when parking, so that the electric vehicle can be connected to the power grid for a longer time, and the excess energy storage capacity of the electric vehicle can be fully utilized for the exchange of electric energy, which can alleviate the short-term load pressure of the power grid equipment and improve the power grid's ability to absorb clean energy;

[0061] Based on the small size of the AC charging pile 2, the present invention embeds it into the joint of the two half-reels 3 of the wire reel 3. The power cord 21 and the charging cord 22 on the AC charging pile 2 are respectively wound on the corresponding half-reels 3. Such a configuration prevents the power cord 21 and the charging cord 22 from being entangled with each other, and can also reduce their respective retraction and extension lengths, thereby avoiding cable twisting from the root, thereby ensuring charging stability and higher power transmission capacity; compared with traditional cable automatic winding, in order to prevent the disadvantages caused by twisting, conductive rings and brushes are usually set in the wire reel 3, the present invention can avoid the disadvantages caused by cable twisting without setting parts such as conductive rings and brushes, and has a simple structure, low manufacturing cost, and is not prone to failure.

[0062] As a preferred embodiment, see Figure 3 The first half wire drum 31 includes a first half drum 311 and a first flange 312 arranged at one end of the first half drum 311, and the second half wire drum 32 includes a second half drum 321 and a second flange 322 arranged at one end of the second half drum 321;

[0063] The first half roll 311 is provided with a first receiving groove 313 at the end away from the flange, and the second half roll 321 is provided with a second receiving groove 323 at the end away from the flange. The first half roll 311 and the second half roll 321 are detachably buckled together, and the first receiving groove 313 and the second receiving groove 323 are matched to form the receiving chamber 4.

[0064] Specifically, in this embodiment, the main projection of the accommodating cavity 4 is a square that matches the shape of the AC charging pile 2; the power cord guide groove 5 and the charging cord guide groove 6 are respectively arranged at the two diagonal corners of the square accommodating groove; during installation, the AC charging pile 2 is first clamped in the accommodating cavity 4, and the power cord 21 is passed through the power cord guide groove 5 and wound on the first half reel 311, and the charging cord 22 is passed through the charging cord guide groove 6, and then the second accommodating groove 323 of the second half reel 32 is matched and buckled on the first accommodating groove 313, and finally the charging cord 22 is wound on the second half reel 321, and the end extending from the second half reel 321 is connected to the charging gun 1;

[0065] After the first half reel 311 and the second half reel 321 are buckled together, the two can be fastened together by screws to form a whole, or the first half reel 311 and the second half reel 321 are provided with mutually matching buckle structures, and the two half reels are detachably connected by the buckle structure;

[0066] See also Figure 3 The first flange 312 and the second flange 322 are respectively provided with a traction rope 8 groove 33 on the cable reel 3 for storing and releasing the traction rope 8; and under the action of the gravity of the cable reel 3, the charging cable 22 and the charging gun 1, the traction rope 8 is in a tensioned state, so that the cable reel 3 can rotate under the guidance of the traction rope 8 groove 33, so that the charging cable 22 and the power cable 21 on the cable reel 3 can be released or stored.

[0067] As a preferred embodiment, a traction rope 8 fixing hole (not shown in the figure) is provided in the traction rope 8 groove 33, so that the end of the traction rope 8 away from the electric winch 7 can pass through and be fixedly connected to the wire drum 3; after the traction rope 8 groove 33 passes through the traction rope 8 fixing hole, the connection with the wire drum 3 can be achieved by tying a knot or setting a blocking member.

[0068] As a preferred embodiment, the electric winch 7 includes an electric drum and a traction rope 8 fixed to and wound around the electric drum at one end; the other end of the traction rope 8 passes through the rope fixing hole and is fixed on the corresponding half-reel 3;

[0069] Two electric winches 7 are suspended side by side on the ceiling or beam, and are respectively arranged corresponding to the flange of the first half wire drum 31 and the flange of the second half wire drum 32;

[0070] In the present invention, two conventional electric winches 7 drive a wire drum 3 with a simple structure to anti-twist the power cord 21 and the charging cord 22. Compared with the traditional automatic telescopic reel (such as a Chinese patent with patent number ZL2016102552797, which discloses a conductive slip ring and a cable retracting device using the conductive slip ring, the patent uses a conductive slip ring built into the reel in the cable retracting device. When the cable is wound, the conductive slip ring and the reel rotate in the same direction and at the same speed, which can effectively eliminate the cable damage caused by long-term self-twist when the cable is wound, thereby extending the service life of the cable), there is no need to set a conductive ring and a brush, so that the suspended AC charging device provided by the present invention has a simple structure, high reliability and low cost.

[0071] As a preferred embodiment, the radio sensor senses the arrival or departure of the vehicle by matching the vehicle's Bluetooth or the Bluetooth on the owner's own mobile device through the Bluetooth protocol; preferably, the owner's own mobile device is a mobile phone or tablet, etc.; specifically, if the radio sensor senses a pairing signal, the controller sends a pay-out signal to the electric winch 7, and the charging cable 22 carrying the charging gun 1 is lowered for user use; if the radio sensor senses that the pairing signal is lost or the charging gun 1 does not detect an insertion signal within a preset time, the controller sends a reel-in signal to the electric winch 7, and the charging cable 22 carrying the charging gun 1 rises.

[0072] It should be noted that a plug-in sensor contact is provided in the plug of the charging gun 1 as a connection detection signal for detecting whether the connection status between the charging pile and the vehicle energy interface is normal.

[0073] Example 2

[0074] The present invention also provides a method for automatically retracting and releasing a suspended AC charging device as provided in the embodiment, the steps of which include:

[0075] S1. When the radio sensor senses the vehicle, the controller controls the two electric winches 7 to rotate forward to release the traction rope 8. As the traction rope 8 is released, the wire drum 3 rotates while releasing the charging line 22 and the power line 21 stored at both ends of the charging pile. Until the charging gun 1 thereon reaches the first preset height, the two electric winches 7 stop rotating. At this time, the user can choose to insert the charging gun 1 into the vehicle energy interface for charging or not to charge according to their needs. If the user inserts the charging gun 1 into the vehicle energy interface, the charging gun 1 detects the insertion signal, and the charging pile starts to charge the vehicle.

[0076] If the user does not insert the charging gun 1 into the vehicle energy interface, or after charging is completed, the user unplugs the charging gun 1, that is, the charging gun 1 cannot detect the insertion signal within the preset time, when the owner leaves or the vehicle is turned off, causing the radio sensor to sense the loss of the pairing signal, execute step S2;

[0077] It should be noted that the charging gun 1 that meets the national design standard is equipped with a locking device. When the charging gun 1 is in the plugged-in state, the paired vehicle locks it and the charging gun 1 cannot be unplugged. The charging gun 1 cannot be unplugged without controlling the paired vehicle, thereby preventing non-owners from stealing it.

[0078] Specifically, the first preset height can be flexibly set according to the height of the vehicle energy charging port when used for the first time;

[0079] S2. When the wireless sensor senses that the pairing signal is lost, or the charging gun 1 does not detect the insertion signal within the preset time, it is judged that the vehicle has left, and the controller controls the two electric winches 7 to rotate in the opposite direction to retract the traction rope 8. The wire drum 3 is retracted along with the traction rope 8. The wire drum 3 rotates while storing the charging wire 22 and the power wire 21 at both ends of the charging pile. Until the wire drum 3 rises to a second preset height, the two electric winches 7 stop rotating.

[0080] The entire charging device can automatically retract and release the line. The user only needs to plug and unplug the charging gun 1 to the vehicle energy interface, which reduces the charging operation steps and can encourage users to develop a good habit of charging when parking. This allows electric vehicles to be connected to the power grid for a longer time, fully utilizes the excess energy storage capacity of electric vehicles to exchange electricity, alleviates the short-term load pressure on power grid equipment, and improves the power grid's ability to absorb clean energy.

[0081] As a preferred embodiment, when the two electric winches 7 rotate, when releasing or storing the traction rope 8, the traction rope 8 is guided by the traction rope 8 groove 33, and the wire drum 3 rotates to release or store the power cord 21 and the charging cord 22 thereon.

[0082] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A suspended AC charging device, characterized in that: include: Charging gun, used to connect to the vehicle's energy interface for charging; The AC charging pile is used to provide AC power of preset power, with a power cord connected to the power source extending from one end and a charging cord connected to the charging gun extending from the other end; A wire reel, comprising a first half wire reel and a second half wire reel which are buckled together, wherein a receiving cavity is provided at the joint of the first half wire reel and the second half wire reel; the AC charging pile is arranged in the receiving cavity, and a power line guide groove and a charging line guide groove which are connected to the receiving cavity are provided at the joint of the first half wire reel and the second half wire reel respectively; The power line passes through the power line guide groove and is wound on the first half wire drum, and the charging line passes through the charging line guide groove and is wound on the second half wire drum and then connected to the charging gun; An electric winch is suspended from a ceiling or a beam and is used to drive the cable drum to rise and fall through a traction rope to prevent the charging cable from twisting and retracting; A radio sensor is arranged on any of the electric winches and is used to sense the arrival or departure of the corresponding vehicle. The radio sensor is communicatively connected with the electric winches and is used to control the descent or ascent of the two electric winches.

2. A suspension type AC charging device according to claim 1, characterized in that: The first half wire drum comprises a first half drum and a first flange arranged at one end of the first half drum, and the second half wire drum comprises a second half drum and a second flange arranged at one end of the second half drum; The first half roll is provided with a first receiving groove at the end away from the flange, and the second half roll is provided with a second receiving groove at the end away from the flange. The first half roll and the second half roll can be detachably buckled together, and the first receiving groove and the second receiving groove matched with each other constitute the receiving cavity. The first flange and the second flange reels are respectively provided with traction rope grooves for receiving and releasing the traction rope.

3. A suspension type AC charging device according to claim 2, characterized in that: The main projection of the accommodating cavity is a square that matches the shape of the AC charging pile; The power line guide groove and the charging line guide groove are respectively arranged at two opposite corners of the square receiving groove.

4. A suspension type AC charging device according to claim 2 or 3, characterized in that: A traction rope fixing hole is provided in the traction rope groove, so that the traction rope end away from the electric winch can pass through and be fixedly connected to the wire drum.

5. A suspension type AC charging device according to claim 4, characterized in that: The electric winch comprises an electric drum and a traction rope having one end fixed to the electric drum and wound thereon; the other end of the traction rope passes through the rope fixing hole and is fixed on the corresponding half-reel; The two electric winches are respectively arranged corresponding to the flange of the first half wire drum and the flange of the second half wire drum.

6. A suspension type AC charging device according to any one of claims 1 to 3, characterized in that: The wireless sensor senses the arrival or departure of the vehicle by matching the vehicle's Bluetooth or the Bluetooth on the owner's own mobile device through the Bluetooth protocol.

7. A suspension type AC charging device according to any one of claims 1 to 3, characterized in that: The charging gun is provided with a plug-in sensor, and the plug-in sensor is communicatively connected with the electric winch, and is used for cooperating with the wireless sensor to control the descent or ascent of the two electric winches.

8. An automatic retracting and releasing method for a suspended AC charging device as claimed in any one of claims 1 to 7, characterized in that: The steps include: S1. When the radio sensor senses a vehicle, the controller controls the two electric winches to rotate forward to release the traction rope. As the traction rope is released, the wire drum rotates while releasing the charging wire and the power cord stored at both ends of the charging pile. Until the charging gun on it reaches a first preset height, the two electric winches stop rotating. S2. When the wireless sensor senses that the pairing signal is lost, or the charging gun does not detect the insertion signal within the preset time, it is judged that the vehicle has left, and the controller controls the two electric winches to rotate in opposite directions to retract the traction rope. As the traction rope is retracted, the cable drum rotates while storing the charging cable and power cable at both ends of the charging pile. Until the cable drum rises to a second preset height, the two electric winches stop rotating.

9. The automatic retracting and releasing method of a suspended AC charging device according to claim 8, characterized in that: In step S1, when the charging gun reaches a first preset height, if the user inserts the charging gun into the vehicle energy interface, the charging gun detects an insertion signal, and the charging pile starts charging the vehicle; If the user has not inserted the charging gun into the vehicle energy interface, execute step S2.

10. The automatic retracting and extending method of a suspended AC charging device according to claim 8 or 9, characterized in that: When the two electric winches rotate, when releasing or storing the traction rope, the traction rope is guided by the traction rope groove, and the cable drum rotates to release or store the charging cable and the power cable thereon.

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