Mobile charging pile

Abstract

A mobile charging pile is characterized in comprising a charging pile body, a crossbeam, a gun box, a first motor, a charging cable, a winding mechanism and a charging gun, the crossbeam is horizontally arranged on the top of the charging pile body; the gun box can move back and forth transversely relative to the crossbeam, and a fixing sleeve is transversely arranged in the middle part of the gun box; the charging cable comprises a front cable and a rear cable connected with the front cable; the front cable is led out upward from the axial cavity of the charging pile body and connected into the gun box, the rear cable is located in the gun box and fixed on the fixing sleeve at one end; the winding mechanism is arranged in the gun box for winding and unwinding the rear cable; and the charging gun is arranged at the end of the rear cable. The gun box and the necessary charging cable are used as a suspended mobile main body, the same charging gun can be used for charging at different parking spaces, and the volume of the mobile part is greatly reduced considering the existing indoor parking lot structure layout.

Description

Technical Field

[0001] The present invention relates to a charging device, and in particular to a charging pile applied to new energy vehicles. Background Art

[0002] With increasing demands for carbon emissions control on traditional vehicles, new energy electric vehicles are being introduced in droves. However, current electric vehicle battery technology has limited range, long charging times, and a high reliance on charging stations. This has led to a sharp increase in demand for public charging stations. Currently, the market primarily utilizes fixed charging stations, which can be categorized as column-mounted or wall-mounted. These types of charging stations are immovable and can only be assigned to one charging station per parking space. Therefore, parking spaces with charging stations must be dedicated to electric vehicles. If there are more dedicated electric vehicle spaces than the actual number of electric vehicles, these spaces will be left unused, underutilizing parking resources, even when parking is already scarce. If there are fewer dedicated electric vehicle spaces than the actual number of electric vehicles, some electric vehicles may be unable to charge. Furthermore, if a car fails to leave the vehicle in a timely manner after charging, the charging station will remain idle. Therefore, these fixed charging stations can easily lead to uneven distribution of parking and charging resources, resulting in resource waste.

[0003] In response to the drawbacks of fixed charging piles, some people have begun to study mobile charging pile solutions. According to the literature, see the Chinese utility model patent No. ZL201720709336.4 "A suspended movable charging pile for underground parking lots" (Announcement No.: CN206826428U); the Chinese utility model patent No. ZL201920945486.4 "A hoisted mobile lifting charging pile" (Authorization Announcement No.: CN210363437U).

[0004] Currently, the main method for mobile charging stations is to suspend the main body of the charging station to allow for mobility. Due to the large size and weight of the charging station, these mobile charging stations impose specific limitations on installation space, suspension strength, and the number of stations that can be installed. Installation space: The size of the entire charging station affects the floor height, spacing between parking spaces, and parking arrangement of parking lots, making it ineffective and generally unsuitable for use in ordinary parking lots. Suspension strength: Because the entire charging station must be suspended, it is relatively heavy, requiring higher load-bearing strength, which necessitates higher-quality materials and a larger structure. Number of stations that can be installed: Within the limited space between parking spaces in ordinary parking lots, suspending the bulky and heavy charging station body inevitably limits the number of stations that can be installed. While this approach allows for the mobility and flexible allocation of charging stations to different parking spaces, achieving coverage requirements, as the adoption of new energy electric vehicles increases and multiple electric vehicles require charging in the same parking space, space constraints will make it impossible to meet the established requirements within the original parking lot design.

[0005] In addition, the charging gun is connected to the charging cabinet through a charging cable. The charging gun can be adapted to the vehicle's charging plug to charge the vehicle. In order to achieve charging at different distances, the charging cabinet is often equipped with a cable reel to facilitate the extension and storage of the charging cable.

[0006] The current cable reeling mechanism on the market typically consists of a spring ratchet mechanism combined with a power adapter. The spring ratchet mechanism automatically retracts the cable using spring potential energy. The power adapter converts the rotating cable into a fixed intermediate output cable. This structure uses rotational friction between a copper plate and a spring to transmit electrical energy. However, the disadvantage is that when the cable rotates, the power adapter transmits electrical energy, which can lead to poor contact, unstable signals, and sparks from strong currents, making it unsafe. Electrical information and energy cannot be transmitted during the retraction process; transmission must wait until the retraction stops.

[0007] At the same time, existing cable retraction devices have the following problems when used: First, the cable retraction length is difficult to control. If it is too short, a lot of cable will be exposed; if it is too long, it will have a significant impact on the charging station, causing inconvenience in operation. Second, the user must hold the charging gun with one hand and operate the cable retraction device with the other hand to extend the charging cable to the appropriate length, or require two people to work together to complete the operation, which is also not very convenient and cannot be completed with one hand. Third, the existing charging gun has poor contact when contacting the vehicle charging socket, resulting in poor connection security and inconvenient operation. There is also the risk of high temperature and fire caused by poor contact when charging with high current. Summary of the Invention

[0008] The first technical problem to be solved by the present invention is to provide a suspended mobile charging pile with a small installation space in view of the above technical status.

[0009] The second technical problem to be solved by the present invention is to provide a mobile charging pile with good electrical conductivity during cable retraction and extension in response to the above-mentioned technical status.

[0010] The technical solution adopted by the present invention to solve the above technical problems is: a mobile charging pile, characterized by comprising

[0011] The charging pile body is arranged on the ground in the shape of a column and is hollow to form an axial cavity;

[0012] A crossbeam, horizontally arranged on the top of the aforementioned charging pile body;

[0013] The gun box can move back and forth laterally relative to the aforementioned crossbeam, and a fixed sleeve is arranged laterally in the middle;

[0014] A first motor, capable of forward and reverse rotation, is mounted on the aforementioned crossbeam and drives the aforementioned gun box to move back and forth through a transmission mechanism;

[0015] The charging cable includes a front cable and a rear cable connected to the front cable; the front cable is led upward from the axial cavity of the charging pile body and connected to the gun box, and the rear cable is located in the gun box and fixed to the fixed sleeve at one end;

[0016] a reeling mechanism, disposed in the gun case and used for retracting the rear section of the cable; and

[0017] A charging gun, located at the end of the aforementioned rear cable;

[0018] The aforementioned winding mechanism includes

[0019] A winding drum, the middle portion of which is sleeved on the aforementioned fixed sleeve and rotatably disposed in the gun case and having an inner cavity for accommodating a portion of the rear section of the cable and an annular wall for winding another portion of the rear section of the cable, the annular wall having a through hole for the rear section of the cable to pass through;

[0020] The second motor is arranged at one side of the gun box and has a transversely arranged power output shaft. The power output shaft is drivingly connected to the winding drum and is rotatably arranged in the fixed sleeve.

[0021] Furthermore, a hollow and bendable drag chain is provided on the crossbeam, and the front section cable is led out from the axial cavity of the aforementioned charging pile body and then passed through the drag chain.

[0022] Preferably, the transmission mechanism includes a driving wheel, a driven wheel and an endless belt, the driving wheel and the driven wheel are arranged at intervals, the endless belt is wound around the outer circumference of the driving wheel and the driven wheel, the first motor is arranged on one side of the driving wheel, the gun box is connected to the endless belt and can move laterally with the rotation of the endless belt; a guide rail is provided above the crossbeam, and the guide rail is arranged parallel to the length direction of the crossbeam, a connecting member is provided at the top of the gun box, and a roller adapted to the guide rail is provided on the top of the connecting member.

[0023] The rear cable section has at least a partially flat cross-section and has elastic springs integrally formed on both sides. This allows the rear cable section to have a certain degree of elasticity, allowing for faster retraction. Furthermore, the integrated design of the springs and the rear cable section facilitates space layout within the gun case.

[0024] In order to ensure the orderly entry and exit and management of the charging cable, an arc-shaped guide plate is provided on the inner side of the winding drum near the through hole. A guide block is provided on the guide plate facing the through hole, and a guide hole is opened on the guide block for the rear section of the cable to pass through.

[0025] The charging gun is equipped with an operating button that controls the rotation of the second motor. The signal output of this operating button is connected to the control panel. The operating button can be touched while holding the charging gun's grip. The operating button on the charging gun controls the rotation of the motor, and thus the length of the charging cable. This allows for easy, single-handed operation. After charging is complete, the cable automatically reels in, allowing the charging gun to be placed away.

[0026] Furthermore, a signal line is built into the rear cable, one end of which is connected to the operating button and the other end is connected to the control panel. Of course, wireless transmission control can also be used.

[0027] The charging gun has a charging head that is electrically connected to the vehicle's charging socket. A third motor is installed within the gun, and a driving gear is provided at the power output end of the third motor. Correspondingly, the head of the charging gun, located on the outer ring of the charging head, has a rotating wheel. The rear end of the rotating wheel has an internal gear ring that meshes with the aforementioned driving gear. The inner side of the front end of the rotating wheel has internal threads that mate with the external threads on the outer end of the charging socket. After the charging head is docked with the charging socket, the third motor is activated, which drives the driving gear to rotate, which in turn drives the internal gear ring and the rotating wheel, thereby quickly completing the threaded connection between the rotating wheel and the charging socket and ensuring that the charging head is properly docked.

[0028] A position sensor is installed on one side of the charging head. When the rotating wheel contacts the charging socket, the sensor is triggered. This sensor sends a signal to the control board, which activates the third motor to screw the rotating wheel into the charging socket's mating thread. This ensures more stable contact between the charging gun and the charging socket, preventing fires caused by poor contact due to contact or other accidents during charging.

[0029] The charging head is equipped with a temperature sensor connected to the control board. If the charging head exceeds a set temperature during charging, the control board controls the third motor to reverse, releasing the rotor from the charging socket. If the temperature rises too high, the control board immediately commands the third motor to reverse, quickly releasing the rotor from the charging socket and ensuring that both are disconnected.

[0030] Compared with the existing technology, the advantages of the present invention are: using the gun box and the necessary charging cables as the suspended mobile body, the same charging gun can be charged in different parking spaces. Considering the existing indoor parking lot structure layout, the volume of the mobile part is greatly reduced and the weight is greatly reduced, so that one charging pile can drive one or more charging guns, thereby meeting the simultaneous charging needs of multiple parking spaces.

[0031] The enlarged inner cavity of the winding drum is used to store the charging cable, and at the same time, one end of the charging cable is fixed to the fixed sleeve. The special winding mechanism ensures the stability and reliability of electrical conduction, and eliminates safety accidents caused by poor conductive contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a structural diagram of Example 1.

[0033] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0034] Figure 3 for Figure 1 Enlarged view of part B in the middle.

[0035] Figure 4 for Figure 2 Exploded view of the middle driving wheel and the first motor.

[0036] Figure 5 for Figure 3 Structural breakdown diagram.

[0037] Figure 6 for Figure 5 An enlarged view of the reverse side of the shot box.

[0038] Figure 7 for Figure 6 Schematic diagram of the structure after the gun box is removed.

[0039] Figure 8 for Figure 7 Another enlarged view of the middle winding drum.

[0040] Figure 9 This is the cross-sectional view of the second section.

[0041] Figure 10 This is the control principle diagram in Example 1.

[0042] Figure 11 This is a cross-sectional view of the charging gun of Example 2.

[0043] Figure 12 This is the control principle diagram of Example 2. DETAILED DESCRIPTION

[0044] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0045] like Figures 1 to 5 As shown, the mobile charging pile in this embodiment 1 includes a charging pile body 1a, a crossbeam 3a, a gun box 2a, a first motor 5a, a charging cable, a winding mechanism and a charging gun 3.

[0046] The charging pile body 1a is in the shape of a column and is set on the ground near the parking space 10a. The charging pile body 1a is hollow to form an axial cavity and has a control display screen 11a on the side for user operation; the crossbeam 3a is horizontally arranged on the top of the charging pile body 1a; the gun box 2a is used to place the charging gun and can move back and forth laterally relative to the crossbeam 3a. A fixed sleeve 43 is laterally arranged in the middle of the gun box 2a; the first motor 5a can rotate forward and reverse, is arranged on the crossbeam 3a and drives the gun box 2a to move back and forth through a transmission mechanism.

[0047] The charging cable includes a front cable and a rear cable 2 connected to the front cable; the front cable is led upward from the axial cavity of the charging pile body 1a and connected to the gun box 2a, the rear cable 2 is located in the gun box 2a and one end is fixed to the fixed sleeve 43; the charging gun 3 is provided at the end of the rear cable 2.

[0048] Combine Figure 3 and Figure 5 As shown, a hollow, flexible drag chain 41a is provided on the crossbeam 3a. The front cable is led upward from the axial cavity of the charging pile body 1a and then passed through the drag chain 41a. The drag chain 41a, also known as a crawler, is commercially available and can protect the front cable.

[0049] Combine Figure 6 and Figure 7 As shown, the winding mechanism is arranged in the gun box 2a for winding and releasing the rear cable 2; the winding mechanism in this embodiment includes a winding drum 4 and a second motor 5, the middle part of the winding drum 4 is sleeved on the fixed sleeve 43 and is rotatably arranged in the gun box 2a and has an inner cavity 41 for accommodating a part of the rear cable 2 and an annular wall 42 for winding another part of the rear cable 2, and the annular wall 42 has a through hole 46 for the rear cable 2 to pass through; the second motor 5 is arranged on one side of the gun box 2a and has a transversely arranged power output shaft 51, which is drive-connected to the winding drum 4 and is rotatably arranged in the fixed sleeve 43.

[0050] Combine Figure 4 and Figure 5 As shown, the transmission mechanism in this embodiment includes a driving wheel 51a, a driven wheel 53a, and an endless belt 52a. The driving wheel 51a and the driven wheel 53a are mounted on a bracket 54a. The driving wheel 51a and the driven wheel 53a are spaced apart, and the endless belt 52a is wound around the outer circumferences of the driving wheel 51a and the driven wheel 53a. The first motor 5a is located on one side of the driving wheel 51a. The gun case 2a is connected to the endless belt 52a via a connector 62a and can move laterally with the rotation of the endless belt 52a. A guide rail 31a is provided above the crossbeam 3a and extends parallel to the length of the crossbeam 3a. A connecting member 6a is provided at the top of the gun case 2a, and a roller 61a is provided on the top of the connecting member 6a, which fits within the guide rail 31a.

[0051] The rear section cable 2 includes a first section 21 and a second section 22 connected to the first section 21. The second section 22 has a built-in signal line 321. One end of the signal line 321 is connected to the operating button 32, and the other end is connected to the control board 10. Figure 9 As shown, the second section 22 is flat in cross section and has elastic springs 221 integrally formed on both sides. The inner cavity 41 is used to accommodate the second section 22, and the annular wall 42 is used to wind the first section 21.

[0052] Combine Figure 8 As shown, an arc-shaped guide plate 45 is provided on the inner side of the winding drum 4 near the through hole 46. A guide block 44 is provided on the guide plate 45 facing the through hole 46. The guide block 44 is provided with a guide hole for the rear cable 2 to pass through.

[0053] Combine Figure 10 As shown, the charging gun 3 is provided with an operating button 32 that can control the rotation of the second motor 5. The signal output end of the operating button 32 is connected to the control board 10. The operating button 32 can be touched when the grip 31 of the charging gun is held.

[0054] Example 2, combined with Figure 11 and Figure 12 As shown, the charging gun 3 has a charging head 33 electrically connected to the charging socket 8 of the vehicle, and a third motor 6 is provided inside the charging gun 3. The power output end of the third motor 6 is provided with a driving gear 61. Correspondingly, the head of the charging gun 3 is located on the outer ring of the charging head 33 and has a rotating wheel 7. The rear end of the rotating wheel 7 has an inner gear ring 71, which is engaged with the driving gear 61. The inner side of the front end of the rotating wheel 7 has an internal thread 72 that cooperates with the external thread 81 at the outer end of the charging socket 8.

[0055] A position sensor 35 is installed on one side of the charging head 33. When the rotating wheel 7 contacts the charging socket 8, the position sensor 35 is triggered. This sensor 35 sends a signal to the control board 10, which activates the third motor 6 to screw the rotating wheel 7 into the charging socket 8. This ensures more stable contact between the charging head and the charging socket, preventing fires caused by poor contact due to contact or other accidents during charging.

[0056] The head of the charging gun 3 is equipped with a temperature sensor 34 connected to the control board 10. If the charging head 33 exceeds a set temperature during charging, the control board 10 controls the third motor 6 to reverse and release the rotor 7 from the charging socket 8. If the temperature rises too high, the control board immediately commands the third motor to reverse, quickly releasing the rotor 7 from the charging socket, ensuring that both are disconnected and reducing risks.

[0057] After the charging head is docked with the charging socket, the position sensor 35 is triggered to start the third motor, which drives the driving gear to rotate, and then drives the inner ring gear and the rotating wheel to rotate, thereby quickly completing the threaded connection between the rotating wheel and the charging socket, ensuring that the charging head is docked in place.

[0058] For other structures of this embodiment, refer to Example 1.

Claims

1. A mobile charging pile, characterized in that include The charging pile body (1a) is arranged on the ground in a columnar shape and is hollow to form an axial cavity; A crossbeam (3a) is horizontally arranged on the top of the aforementioned charging pile body (1a); The gun box (2a) can move back and forth laterally relative to the aforementioned crossbeam (3a), and a fixed sleeve (43) is laterally arranged in the middle; A first motor (5a), capable of forward and reverse rotation, is disposed on the aforementioned crossbeam (3a) and drives the aforementioned gun box (2a) to move back and forth through a transmission mechanism; A charging cable comprises a front cable and a rear cable (2) connected to the front cable; the front cable is led upward from the axial cavity of the charging pile body (1a) and connected to the gun box (2a); the rear cable (2) is located in the gun box (2a) and one end is fixed to the fixed sleeve (43); A charging gun (3) is provided at the end of the aforementioned rear cable (2); and A reeling mechanism is provided in the gun box (2a) for retracting the rear section of the cable (2); The aforementioned winding mechanism includes A winding drum (4), the middle portion of which is sleeved on the aforementioned fixed sleeve (43) and rotatably arranged in the gun box (2a), and having an inner cavity (41) for accommodating a portion of the rear section cable (2) and an annular wall (42) for winding another portion of the rear section cable (2), the annular wall (42) having a through hole (46) for the rear section cable (2) to pass through; A second motor (5) is provided on one side of the gun box (2a) and has a transversely arranged power output shaft (51), the power output shaft (51) being drivingly connected to the winding drum (4) and rotatably disposed in a fixed sleeve (43); The rear section cable (2) has at least a partially flat cross section and has elastic springs (221) integrally formed on both sides; An arc-shaped guide plate (45) is provided on the inner side of the winding drum (4) near the through hole (46), and a guide block (44) facing the through hole (46) is provided on the guide plate (45), and the guide block (44) is provided with a guide hole for the rear section cable (2) to pass through; The charging gun (3) is provided with an operating button (32) capable of controlling the rotation of the second motor (5); a signal output end of the operating button (32) is connected to the control panel (10); and the operating button (32) can be touched when the grip portion (31) of the charging gun is held in the hand. The rear cable (2) has a built-in signal line (321), one end of the signal line (321) is connected to the operating button (32), and the other end is connected to the control panel (10); The charging gun (3) has a charging head (33) electrically connected to the charging socket (8) of the vehicle, a third motor (6) is provided inside the charging gun (3), and a driving gear (61) is provided at the power output end of the third motor (6). Correspondingly, the head of the charging gun (3) is located on the outer ring of the charging head (33) and has a rotating wheel (7), the rear end of the rotating wheel (7) has an inner gear ring (71), the inner gear ring (71) is engaged with the aforementioned driving gear (61), and the inner side of the front end of the aforementioned rotating wheel (7) has an internal thread (72) that cooperates with the external thread (81) at the outer end of the charging socket (8); A position sensor (35) is provided on one side of the charging head (33). When the rotating wheel (7) contacts the charging socket (8), the position sensor (35) is triggered. The position sensor (35) sends a signal to the control board (10). The control board (10) controls the third motor (6) to start so that the rotating wheel (7) and the charging socket (8) are screwed together.

2. The mobile charging station according to claim 1, characterized in that A hollow and bendable drag chain (41a) is provided on the crossbeam (3a), and the front section cable is led upward from the axial cavity of the aforementioned charging pile body (1a) and then passed through the drag chain (41a).

3. The mobile charging station according to claim 1, characterized in that The transmission mechanism comprises a driving wheel (51a), a driven wheel (53a) and an annular belt (52a), wherein the driving wheel (51a) and the driven wheel (53a) are arranged at intervals, and the annular belt (52a) is wound around the outer periphery of the driving wheel (51a) and the driven wheel (53a), and the first motor (5a) is arranged on one side of the driving wheel (51a), and the gun box (2a) is connected to the annular belt (52a) and can move laterally with the rotation of the annular belt (52a); a guide rail (31a) is provided above the crossbeam (3a), and the guide rail (31a) is arranged parallel to the length direction of the crossbeam (3a); a connecting member (6a) is provided at the top of the gun box (2a), and a roller (61a) adapted to be in the guide rail (31a) is provided at the top of the connecting member (6a).

4. The mobile charging station according to claim 1, characterized in that The head of the charging gun (3) is provided with a temperature sensor (34) connected to the control board (10). When the charging head (33) exceeds a set temperature during charging, the control board (10) controls the third motor (6) to reverse so that the rotating wheel (7) is loosened from the charging socket (8).

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