Mobile direct-current shore power charging device

Abstract

The utility model provides a movable direct current shore power charging device, which relates to the technical field of ship charging and comprises a cable coiling device, a movable base plate, a movable base plate, a movable base plate and a movable base plate, a cable guiding device is arranged at the front end of the lifting arm, and the tail end of the lifting arm is fixed to the top of the cable winding device and rotates with the top of the cable winding device as the rotating vertex; the charging bin is mounted on the movable chassis, is connected with shore power and is used for converting alternating-current shore power into direct-current power; one end of the cable is connected with an outgoing line copper bar of the charging bin, the other end of the cable enters the cable guiding device along the lifting arm, the lifting arm lifts the cable to a socket box on a ship, and then the cable guiding device sends the cable outwards to charge the ship. The method has the advantages that the process of hoisting container type battery packs can be omitted, shore power can be directly transmitted to a ship, the method is simple and efficient, a large number of container type battery packs needing to be prepared ashore are omitted, and economic benefits are high.

Description

Technical Field

[0001] The utility model relates to the technical field of ship charging, in particular to a mobile direct current shore power charging device. Background Art

[0002] To actively respond to the national call for energy conservation and emission reduction and accelerate the transition to green transportation, new energy vessels are booming as an emerging force. These vessels primarily rely on containerized battery packs as their power source. However, when the battery packs run out of power, the battery replacement method they adopt exposes a series of problems. Specifically, after docking, the low-charge battery packs need to be transferred to shore through lifting operations, and the fully charged spare batteries on shore need to be lifted back to the ship. This process places extremely high demands on the terminal's lifting and handling capabilities, requiring not only advanced lifting equipment but also professional operators to ensure safe and efficient operations.

[0003] Even more challenging is the fact that, to maintain the continuous operation of new energy vessels, terminals must pre-stock a large number of containerized battery packs. These batteries are not only large and heavy, but they also take up significant space, posing significant challenges to the terminal's daily operations and management. Furthermore, the sheer number of batteries increases maintenance costs, without significantly improving profitability. Instead, the terminal may face difficulties due to high site rental and maintenance costs.

[0004] In summary, while the battery swapping method currently used by new energy vessels has solved the problem of power replenishment to a certain extent, its technical flaws and economic efficiency issues cannot be ignored. To promote the further development of new energy vessels, we need to continuously explore more efficient, economical, and environmentally friendly battery swapping solutions to overcome the limitations of existing technologies. Utility Model Content

[0005] In view of the problems existing in the prior art, the present invention provides a mobile DC shore power charging device, comprising:

[0006] a cable winding device, wherein the cable winding device is fixed on the movable chassis and a cable is wound on the cable winding device;

[0007] A lifting arm, wherein a cable guide device is provided at the front end of the lifting arm, and a distal end of the lifting arm is fixed to the top of the cable winding device and rotates with the top of the cable winding device as a rotation vertex;

[0008] A charging pod, mounted on a movable chassis, connected to shore power for converting AC shore power into DC power;

[0009] One end of the cable is connected to the outlet copper bus of the charging compartment, and the other end of the cable enters the cable guide device along the lifting arm. The lifting arm lifts the cable to the socket box on the ship, and then the cable guide device sends the cable out to charge the ship.

[0010] Preferably, the cable winding device comprises:

[0011] a pair of support plates fixed on the movable chassis, a cable reel provided between the two support plates, the cable reel being wound on the cable reel;

[0012] The driving mechanism is arranged on one of the support plates and is used to drive the cable reel to reel in or deliver the cable.

[0013] Preferably, the cable winding device further comprises:

[0014] A slip ring box, wherein the slip ring box includes a conductive slip ring stator and a matching conductive slip ring rotor;

[0015] A junction box, the junction box being arranged on one of the support plates, wherein a copper busbar is provided in the junction box, the upper end of the copper busbar being connected to the conductive slip ring stator via a connection cable, and the lower end of the copper busbar being connected to the outgoing copper busbar of the charging compartment via a connection cable;

[0016] One end of the cable is connected to the conductive slip ring rotor, and the other end of the cable enters the cable guide device along the lifting arm and is lifted by the lifting arm to the socket box on the ship.

[0017] Preferably, the bottom of the cable winding device is fixed to the movable chassis via a bearing seat, and the bearing seat drives the cable winding device to rotate along the axis of the bearing seat.

[0018] Preferably, the lifting arm is freely retractable and further comprises a hydraulic pump, which is fixed on the movable chassis and is used to provide power for the extension and lifting of the lifting arm.

[0019] Preferably, the movable chassis comprises:

[0020] A trailer chassis, wherein a plurality of tires are provided on the bottom of the trailer chassis;

[0021] A plurality of lifting support legs are respectively arranged at the bottom of the trailer chassis.

[0022] Preferably, the charging compartment includes:

[0023] A control panel connected to the shore power supply for controlling the on and off of the shore power supply;

[0024] The transformer is electrically connected to the control panel and is used to step down the AC shore power and output it to the DC charging module. The DC charging module converts the AC shore power into DC power and outputs it to the cable.

[0025] Preferably, the charging compartment also includes an AC distribution box, which is electrically connected to the transformer and is used to supply power to multiple AC power devices installed in the charging compartment.

[0026] Preferably, the AC power equipment is fire-fighting equipment.

[0027] Preferably, the AC power equipment is an integrated control cabinet.

[0028] The above technical solution has the following advantages or beneficial effects:

[0029] 1. The mobile DC shore power charging device is moved to the side of the vessel that needs charging, and the cable is delivered to the vessel's socket box through the lifting arm and cable guide device. The cable is then connected to the shore power and the hull for charging. This eliminates the process of lifting containerized battery packs and allows shore power to be transmitted directly to the vessel, which is simple and efficient.

[0030] 2. It saves the need to prepare a large number of containerized battery packs on shore, which is highly economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of a mobile DC shore power charging device charging a ship in a preferred embodiment of the present invention;

[0032] Figure 2 This is a left side view of a mobile DC shore power charging device in a preferred embodiment of the present invention;

[0033] Figure 3 This is a right side view of a mobile DC shore power charging device in a preferred embodiment of the present invention;

[0034] Figure 4 This is a front view of a mobile DC shore power charging device in a preferred embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the interior of the charging bin in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0036] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. The present invention is not limited to this embodiment, and other embodiments may also fall within the scope of the present invention as long as they conform to the main purpose of the present invention.

[0037] In a preferred embodiment of the present invention, based on the above-mentioned problems existing in the prior art, a mobile DC shore power charging device is provided, comprising:

[0038] A cable winding device 1 is fixed on a movable chassis 2, and a cable 3 is wound on the cable winding device 1;

[0039] A lifting arm 4, the front end of which is provided with a cable guide device 5, the end of which is fixed to the top of the cable winding device 1 and rotates with the top of the cable winding device 1 as the rotation vertex;

[0040] A charging compartment 6 is mounted on the movable chassis 2 and is connected to shore power for converting AC shore power into DC power.

[0041] One end of the cable 3 is connected to the outlet copper bus of the charging compartment 6, and the other end of the cable 3 enters the cable guide device 5 along the lifting arm 4. The lifting arm 4 lifts the cable 3 to the socket box on the ship, and then the cable guide device sends the cable out to charge the ship.

[0042] Specifically, this embodiment provides a mobile DC shore power charging device, such as Figures 1-4 As shown, the charging chamber 6, the lifting arm 4 and the cable winding device 1 are transported to the shore by the movable chassis 2. The charging chamber 6 converts the high-voltage AC shore power into DC power, which is then transmitted to the cable 3 wound on the cable winding device 1. The lifting arm 4 rotates around the top of the cable winding device 1 to lift one end of the cable 3 (the lifting direction is Figure 2 and Figure 5 The lifting arm 4 then lifts the cable 3 to the corresponding position of the socket box on the ship, and the cable guide 5 sends one end of the cable 3 out to be inserted into the socket box for charging.

[0043] Compared with the current battery replacement method:

[0044] 1. The mobile DC shore power charging device can save the process of lifting containerized battery packs and transmit shore power directly to the ship, which is simple and efficient.

[0045] 2. It saves the need to prepare a large number of containerized battery packs on shore, which is highly economical.

[0046] In a preferred embodiment of the present invention, the cable winding device 1 comprises:

[0047] A pair of support plates 11 are fixed on the movable chassis 2, a cable reel 12 is provided between the two support plates 11, and a cable 3 is wound on the cable reel 12;

[0048] The driving mechanism 13 is provided on one of the support plates 11 and is used to drive the cable reel 12 to reel in or deliver the cable 3 .

[0049] Specifically, in this embodiment, Figure 2-Figure 4 As shown, the cable winding device consists of a pair of support plates 11, a cable reel 12 and a driving mechanism 13. The driving mechanism 13 drives the cable reel 12 to rotate forward or reverse, so as to facilitate the inward or outward delivery of the cable 3.

[0050] In a preferred embodiment of the present invention, the cable winding device 1 further includes:

[0051] The slip ring box 14 includes a conductive slip ring stator and a matching conductive slip ring rotor;

[0052] The junction box 15 is arranged on one of the support plates 11. A copper busbar is provided in the junction box 15. The upper end of the copper busbar is connected to the conductive slip ring stator through a wiring cable 16, and the lower end of the copper busbar is connected to the outgoing copper busbar of the charging compartment 6 through a wiring cable 16;

[0053] One end of the cable 3 is connected to the conductive slip ring rotor, and the other end of the cable 3 enters the cable guide device 5 along the lifting arm 4 and is lifted by the lifting arm 4 to the socket box on the ship.

[0054] Specifically, in this embodiment, Figure 2-Figure 4 As shown, a junction box 15 is further provided on the support plate on the other side, and a slip ring box 14 is provided in the center of the cable reel 12. The lower end of the copper busbar in the junction box 15 is connected to the outgoing copper busbar of the charging compartment 6 through a connection cable 16, which is used to receive the DC power output by the charging compartment 6. The upper end of the copper busbar in the junction box 15 is connected to the conductive slip ring stator, which then transmits the current to the conductive slip ring rotor, which transmits the current to the cable 3 on the cable reel 12 to charge the hull.

[0055] By setting up the slip ring box 14 and the junction box 15, the DC power output by the charging compartment can be more conveniently transmitted to the cable during the process of retracting or delivering the cable, avoiding the cable entanglement problem during the rotation of the cable reel 12.

[0056] In a preferred embodiment of the present invention, the bottom of the cable winding device 1 is fixed to the movable chassis 2 through a bearing seat 17, and the bearing seat 17 drives the cable winding device 1 to rotate along the axis of the bearing seat 17 (the axis is parallel to the vertical direction).

[0057] Specifically, in this embodiment, the bearing seat 17 can rotate 360 ​​degrees to adjust the angle of the cable lifting device 1 according to actual working conditions.

[0058] In a preferred embodiment of the present invention, the lifting arm 4 is freely retractable and further comprises a hydraulic pump 18 , which is fixed on the movable chassis 2 and is used to provide power for the lifting arm 4 to be retracted and lifted.

[0059] Specifically, such as Figure 3 As shown, a hydraulic pump 18 is fixed on the movable chassis, and the hydraulic pump 18 provides power for the lifting arm. A control box 7 is also provided for controlling the lifting arm 4 to rise and fall, controlling the cable reel 12 to retract and release the cable 3, and controlling the rotation of the bearing seat 17, so that the lifting arm 4 can be freely extended and retracted and rotated around the top of the cable winding device 1 to adjust the position of one end of the cable 3.

[0060] In a preferred embodiment of the present invention, the movable chassis 2 comprises:

[0061] A trailer chassis 21, with a plurality of tires 22 provided at the bottom of the trailer chassis 21;

[0062] A plurality of lifting support legs 23 are respectively provided at the bottom of the trailer chassis 21 .

[0063] Specifically, in this embodiment, Figure 5 As shown, the movable trailer chassis 21 is equipped with tires 22 to enable the equipment to be moved. The trailer chassis 21 is equipped with multiple lifting support legs 23. When the DC shore power charging equipment is moved to a designated location, the lifting support legs 23 can be extended to achieve the purpose of fixing the position and sharing the load on the tires 22.

[0064] In a preferred embodiment of the present invention, the charging compartment 6 includes:

[0065] Control panel 61, which is connected to the shore power and is used to control the on and off of the shore power;

[0066] The transformer 62 is electrically connected to the control panel 61 and is used to reduce the voltage of the AC shore power and output it to the DC charging module 63. The DC charging module 63 converts the AC shore power into DC power and outputs it to the cable 3.

[0067] In a preferred embodiment of the present invention, the charging compartment 6 further includes an AC distribution box 64 , which is electrically connected to the transformer 62 and is used to supply power to multiple AC electrical devices installed in the charging compartment 6 .

[0068] In a preferred embodiment of the present invention, the AC power equipment is fire-fighting equipment 65 .

[0069] In a preferred embodiment of the present invention, the AC power equipment is an integrated control cabinet 66 .

[0070] Specifically, in this embodiment, Figure 4-Figure 5As shown, a socket 67 is provided on one side of the charging compartment. Shore power is first connected to the control panel 61 through socket 67. The control panel 61 is used to monitor the shore power status and control the connection and disconnection of shore power. The shore power is then output from the control panel 61 to the transformer 62. The transformer 62 converts the high-voltage AC shore power into low-voltage AC shore power for use by the DC charging module 63 and the AC distribution box 64. The DC charging module 63 converts the low-voltage AC shore power into DC power and outputs it to the cable 3. The AC distribution box 64 provides power to AC power-consuming equipment such as the air conditioner 68, firefighting equipment 65, video surveillance system 69, and integrated control cabinet 66. The air conditioner 68 is used to cool the charging compartment, the firefighting equipment 65 is used to provide fire protection for the charging compartment, and the video surveillance system 69 is used to monitor the status of the equipment in the charging compartment. The integrated control cabinet 66 is equipped with a PLC, a human-machine interface, and a communication management unit for monitoring charging information and accessing ship operation information.

[0071] The above are only preferred embodiments of the present invention and do not limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the contents of this specification and illustrations should be included in the protection scope of the present invention.

Claims

1. A mobile DC shore power charging device, characterized in that: include: a cable winding device, wherein the cable winding device is fixed on the movable chassis and a cable is wound on the cable winding device; A lifting arm, wherein a cable guide device is provided at the front end of the lifting arm, and a distal end of the lifting arm is fixed to the top of the cable winding device and rotates with the top of the cable winding device as a rotation vertex; A charging pod, mounted on a movable chassis, connected to shore power for converting AC shore power into DC power; One end of the cable is connected to the outlet copper bus of the charging compartment, and the other end of the cable enters the cable guide device along the lifting arm. The lifting arm lifts the cable to the socket box on the ship, and then the cable guide device sends the cable out to charge the ship.

2. The mobile DC shore power charging device according to claim 1, characterized in that: The cable winding device comprises: a pair of support plates fixed on the movable chassis, a cable reel provided between the two support plates, and the cable reel wound on the cable reel; The driving mechanism is arranged on one of the support plates and is used to drive the cable reel to reel in or deliver the cable.

3. The mobile DC shore power charging device according to claim 2, characterized in that: The cable winding device also includes: A slip ring box, wherein the slip ring box includes a conductive slip ring stator and a matching conductive slip ring rotor; A junction box, the junction box being arranged on one of the support plates, wherein a copper busbar is provided in the junction box, the upper end of the copper busbar being connected to the conductive slip ring stator via a connection cable, and the lower end of the copper busbar being connected to the outgoing copper busbar of the charging compartment via a connection cable; One end of the cable is connected to the conductive slip ring rotor, and the other end of the cable enters the cable guide device along the lifting arm and is lifted by the lifting arm to the socket box on the ship.

4. The mobile DC shore power charging device according to claim 1, characterized in that: The bottom of the cable winding device is fixed on the movable chassis through a bearing seat, and the bearing seat drives the cable winding device to rotate along the axis of the bearing seat.

5. The mobile DC shore power charging device according to claim 1, characterized in that: The lifting arm can be freely extended and retracted, and further comprises a hydraulic pump, which is fixed on the movable chassis and is used to provide power for the extension and retraction and lifting of the lifting arm.

6. The mobile DC shore power charging device according to claim 1, characterized in that: The movable chassis comprises: A trailer chassis, wherein a plurality of tires are provided at the bottom of the trailer chassis; A plurality of lifting support legs are respectively arranged at the bottom of the trailer chassis.

7. The mobile DC shore power charging device according to claim 1, characterized in that: The charging compartment includes: A control panel connected to the shore power supply for controlling the on and off of the shore power supply; The transformer is electrically connected to the control panel and is used to step down the AC shore power and output it to the DC charging module. The DC charging module converts the AC shore power into DC power and outputs it to the cable.

8. The mobile DC shore power charging device according to claim 7, characterized in that: The charging compartment also includes an AC distribution box, which is electrically connected to the transformer and is used to supply power to multiple AC power devices installed in the charging compartment.

9. The mobile DC shore power charging device according to claim 8, characterized in that: The AC power equipment is fire-fighting equipment.

10. The mobile DC shore power charging device according to claim 8, characterized in that: The AC power equipment is an integrated control cabinet.

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