A high-power direct-current liquid-cooled charging terminal structure

Abstract

The utility model discloses a kind of high-power direct current liquid cooling charging terminal structures, including charging terminal cabinet, the end of charging terminal cabinet is equipped with charging gun, the side of charging terminal cabinet is equipped with front door component, switch power supply, oil cooler, contactor, molded case circuit breaker, incoming line busbar group and outgoing line busbar group are equipped in charging terminal cabinet, switch power supply is located at the top of charging terminal cabinet, oil cooler is located at the middle of charging terminal cabinet, contactor is parallel with switch power supply, molded case circuit breaker, incoming line busbar group and outgoing line busbar group are all located at the bottom of oil cooler, molded case circuit breaker is located between incoming line busbar group and outgoing line busbar group.The utility model integrates multiple direct current charging systems into a charging terminal structure, and is designed as integrated high-power direct current liquid cooling charging terminal, improves charging efficiency, reduces cost, occupies less area, and has short construction period.Each functional part is designed with modularization, facilitating maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of charging equipment technology, specifically relating to a high-power DC liquid-cooled charging terminal structure. Background Technology

[0002] Traditional charging stations used in oil drilling often encounter problems such as insufficient power and slow charging. To improve charging efficiency and enable rapid charging of multiple devices within a limited power capacity, multiple charging stations need to be installed to solve the problem of queuing. Furthermore, DC charging systems and energy storage converter systems need to be installed separately, leading to problems such as large site footprint, the need to lay multiple connecting cables, and inconvenient maintenance. Existing charging equipment is often expensive to manufacture, occupies a large area, and has poor internal heat dissipation. Especially in practical use, existing charging equipment is relatively poor in terms of mobility, making transportation time-consuming and labor-intensive. Utility Model Content

[0003] The purpose of this invention is to solve the above problems and provide a high-power DC liquid-cooled charging terminal structure that can improve charging efficiency, reduce costs, occupy less space, and have a short construction period.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a high-power DC liquid-cooled charging terminal structure, including a charging terminal cabinet, a charging gun at the end of the charging terminal cabinet, a front door assembly on the side of the charging terminal cabinet, and a switching power supply, an oil cooler, a contactor, a molded case circuit breaker, an incoming busbar group, and an outgoing busbar group inside the charging terminal cabinet. The switching power supply is located at the top of the charging terminal cabinet, the oil cooler is located in the middle of the charging terminal cabinet, the contactor is parallel to the switching power supply, and the molded case circuit breaker, the incoming busbar group, and the outgoing busbar group are all located at the bottom of the oil cooler. The molded case circuit breaker is located between the incoming busbar group and the outgoing busbar group.

[0005] Preferably, the charging terminal cabinet has a cuboid structure and includes a cabinet frame and cabinet panels, with the cabinet panels and cabinet frame connected by bolts.

[0006] Preferably, the charging gun is a 1000A national standard oil-cooled DC charging gun with a PT1000 temperature control, and the charging gun is electrically connected to the outgoing busbar group.

[0007] Preferably, the front door assembly includes a door panel, which is connected to the charging terminal cabinet via a hinge to achieve opening and closing; the door panel is fixed with ventilation louvers and door lock fasteners, which are connected to and disconnected from the charging terminal cabinet.

[0008] Preferably, the switching power supply is model LRS-350, which converts AC power into stable DC power. The switching power supply is electrically connected to the oil cooler, and the switching power supply provides power to the oil cooler.

[0009] Preferably, the oil cooler is connected to both the charging gun and the switching power supply to provide heat dissipation for the charging gun when it operates at high power.

[0010] Preferably, the contactor is model SC-E7, and a shunt terminal block is connected to the contactor.

[0011] Preferably, the molded case circuit breaker is an NDM3Z-400-3P DC circuit breaker, with both ends connected to the incoming busbar and the outgoing busbar via bolts to achieve overload and short-circuit protection for the entire circuit.

[0012] Preferably, the incoming busbar assembly includes a TMY copper busbar, the end of the incoming busbar assembly is connected to the molded case circuit breaker, and the TMY copper busbar is provided with a TMY copper busbar mounting hole for connecting to external equipment.

[0013] Preferably, the structure of the outgoing busbar group is the same as that of the incoming busbar group.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model provides a high-power DC liquid-cooled charging terminal structure that can be used in conjunction with an energy storage system to achieve peak shaving and valley filling functions. Specifically, through joint scheduling and control of the DC charging terminal connected to the electrical equipment and the energy storage converter system, the energy storage system is charged at a lower power during off-peak electricity prices, while the stored electrical energy is used to charge the electrical equipment during peak electricity prices. In oil drilling scenarios where diesel generators are used, diesel consumption can be reduced, thus lowering costs.

[0016] 2. This utility model integrates multiple DC charging systems into a single charging terminal structure, designed as an integrated high-power DC liquid-cooled charging terminal, which improves charging efficiency, reduces costs, occupies less space, and shortens the construction period. Each functional component adopts a modular design for easy maintenance. Attached Figure Description

[0017] Figure 1 This is an isometric structural diagram of a high-power DC liquid-cooled charging terminal structure according to this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the cabinet frame structure of this utility model;

[0020] Figure 4This is a schematic diagram of the internal structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the charging gun cable connection of this utility model;

[0022] Figure 6 This is a cross-sectional view of the cable of this utility model.

[0023] Explanation of reference numerals in the attached diagram: 1. Charging terminal cabinet; 2. Charging gun; 3. Front door assembly; 4. Switching power supply; 5. Oil cooler; 6. Contactor; 7. Molded case circuit breaker; 8. Incoming busbar assembly; 9. Outgoing busbar assembly; 11. Cabinet frame; 12. Cabinet panel; 13. Cabinet lifting ring; 14. Cable support; 15. Waterproof cable outlet interface; 21. Cable; 31. Door panel; 32. Ventilation louver; 33. Door lock fastener; 51. Cold source controller; 52. Liquid inlet; 53. Liquid outlet; 61. Diverter terminal block; 81. TMY copper busbar mounting hole; 82. Copper sheet; 211. Cable; 212. Liquid cooling pipe. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figures 1 to 6 As shown, this utility model provides a high-power DC liquid-cooled charging terminal structure, including a charging terminal cabinet 1, a charging gun 2 at the end of the charging terminal cabinet 1, a front door assembly 3 on the side of the charging terminal cabinet 1, and a switching power supply 4, an oil cooler 5, a contactor 6, a molded case circuit breaker 7, an incoming busbar group 8, and an outgoing busbar group 9 inside the charging terminal cabinet 1. The switching power supply 4 is located at the top of the charging terminal cabinet 1, the oil cooler 5 is located in the middle of the charging terminal cabinet 1, the contactor 6 is parallel to the switching power supply 4, and the molded case circuit breaker 7, the incoming busbar group 8, and the outgoing busbar group 9 are all located at the bottom of the oil cooler 5. The molded case circuit breaker 7 is located between the incoming busbar group 8 and the outgoing busbar group 9.

[0026] The charging terminal cabinet 1 has a cuboid structure and includes a cabinet frame 11 and a cabinet panel 12. The cabinet panel 12 is connected to the cabinet frame 11 by bolts.

[0027] This invention, through the design of the cabinet frame, increases the structural strength of the entire device, preventing deformation during use.

[0028] A cabinet lifting ring 13 is fixedly installed on the top of the charging terminal cabinet 1. The cabinet lifting ring 13 has a circular structure and is used for handling. There are four cabinet lifting rings 13, which are evenly and symmetrically distributed on the top of the charging terminal cabinet 1. In this embodiment, the bottom of the cabinet lifting ring 13 is fixedly connected to the cabinet frame.

[0029] Charging gun 2 is a 1000A national standard oil-cooled DC charging gun with PT1000 temperature control. Charging gun 2 is electrically connected to the outgoing busbar group 9.

[0030] In this embodiment, the charging gun 2 is electrically connected to the output busbar 9 via cable 21. Cable 21 includes cable 211 and liquid cooling pipe 212. The liquid cooling pipe 212 is connected to the oil cooler 5, forming a two-in, two-out circulation loop. Cable 211 is connected to the inlet busbar group 8 and the outlet busbar 9 respectively by bolts. The oil cooler 5 is provided with a liquid inlet 52 and a liquid outlet 53. There are four liquid cooling pipes 212, and two liquid inlets 52 and two liquid outlets 53. The liquid cooling pipes 212 are connected to the liquid inlets 52 and the liquid outlets 53 respectively. There are two cables 211, which are connected to two of the liquid cooling pipes 212 respectively.

[0031] Cable 211 is located inside liquid cooling pipe 212, which wraps around cable 211 used for charging, thus providing more thorough cooling.

[0032] A cable support 14 is fixed at the bottom of the charging terminal cabinet 1. The cable support 14 is made of sheet metal bent into a U-shape and is used to store cables. The oil cooler 5 provides oil cooling for the charging gun 2. There are four cable supports 14, with two cable supports 14 distributed in a group on one side of the charging terminal cabinet 1.

[0033] The charging terminal cabinet 1 is also equipped with a waterproof cable exit interface 15, which is a tubular structure. There are five waterproof cable exit interfaces 15 arranged linearly. The waterproof cable exit interfaces 15 connect the inside and outside of the charging terminal cabinet 1. The waterproof cable exit interfaces 15 are threadedly connected to the charging terminal cabinet 1, providing cable protection for external connections of the charging cables.

[0034] The front door assembly 3 includes a door panel 31, which is connected to the charging terminal cabinet 1 via a hinge to achieve opening and closing. The door panel 31 is fixed with a ventilation louver 32 and a door lock fastener 33. The door lock fastener 33 is an existing mature technology product, model MS828Z2B10001733, which connects and disconnects from the charging terminal cabinet 1.

[0035] During use, the door panel 31 can be opened and closed by operating the door lock fastener 33. The ventilation louvers 32 are used for air circulation inside and outside the charging terminal cabinet 1, which facilitates the cooling of the equipment inside the charging terminal cabinet 1.

[0036] Ventilation louvers are also provided on the cabinet panel opposite to the front door component 3 in the charging terminal cabinet 1. By setting multiple ventilation louvers on the charging terminal cabinet 1, better heat dissipation can be achieved for the components inside the charging terminal cabinet 1.

[0037] The switching power supply 4 is model LRS-350, which converts AC power into stable DC power. The switching power supply 4 is electrically connected to the oil cooler 5 and provides power to the oil cooler 5. In this embodiment, the switching power supply 4 is an existing DC charging system. There are five switching power supplies 4 arranged in parallel, and adjacent switching power supplies are electrically connected.

[0038] The oil cooler 5 is connected to the charging gun 2 and the switching power supply 4 respectively, providing heat dissipation for the charging gun 2 when it operates at high power. Specifically, the oil cooler 5 is equipped with a cold source controller 51, which is a built-in component of the oil cooler product. Its main function is to control the operation of the oil pump and cooling fan inside the oil cooler 5. The cold source controller is connected to the switching power supply 4.

[0039] Oil cooler 5 is a mature existing technology product, model C045. There are five oil coolers 5 arranged in parallel.

[0040] Contactor 6 is model SC-E7. It has a shunt terminal block 61 connected to it. One end of the shunt terminal block 61 is connected to contactor 6, and the other end is connected to multiple switching power supplies 4. During use, contactor 6 is connected to the AC / DC module terminals of the existing external energy storage system to ensure that its segmentation capability is compatible with the short-circuit current in the circuit.

[0041] The molded case circuit breaker 7 is a model NDM3Z-400-3P DC circuit breaker. Both ends are connected to the incoming busbar group 8 and the outgoing busbar group 9 via bolts, providing overload and short-circuit protection for the entire circuit. The molded case circuit breaker 7 is connected to the ends of both the incoming busbar group 8 and the outgoing busbar group 9.

[0042] In this embodiment, the incoming busbar group 8 of the molded case circuit breaker 7 is connected to the external power supply incoming cable, the outgoing busbar group 9 is connected to the charging gun 2, and the switching power supply 4 is connected to the contactor 6 through the shunt terminal group 61. One end of the contactor 6 is connected to the shunt terminal group 61, and the other end is connected to the AC / DC module line terminal of the existing external energy storage system, so as to realize the power supply of the switching power supply 4.

[0043] The incoming busbar group 8 includes a TMY copper busbar. The end of the incoming busbar group 8 is connected to the molded case circuit breaker 7. The TMY copper busbar has TMY copper busbar mounting holes 81 for connecting to external equipment. The outgoing busbar group 9 has the same structure as the incoming busbar group 8. The TMY copper busbar includes three rectangular copper plates 82 arranged in parallel. The TMY copper busbar mounting holes 81 are located on the copper plates 82 and are linearly distributed.

[0044] During use, staff can charge external devices simply by picking up the charging gun 2. When the charging location needs to be changed, the device can be lifted and moved using the cabinet lifting ring 13, making it convenient to move and suitable for various scenarios.

[0045] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of this invention, and should be understood that the scope of protection of this invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on these technical teachings disclosed in this invention without departing from the essence of this invention, and these modifications and combinations are still within the scope of protection of this invention.

Claims

1. A high-power DC liquid-cooled charging terminal structure, characterized in that: The device includes a charging terminal cabinet (1), a charging gun (2) at the end of the charging terminal cabinet (1), a front door assembly (3) on the side of the charging terminal cabinet (1), a switching power supply (4), an oil cooler (5), a contactor (6), a molded case circuit breaker (7), an incoming busbar group (8), and an outgoing busbar group (9) inside the charging terminal cabinet (1). The switching power supply (4) is located at the top of the charging terminal cabinet (1), the oil cooler (5) is located in the middle of the charging terminal cabinet (1), the contactor (6) is parallel to the switching power supply (4), the molded case circuit breaker (7), the incoming busbar group (8), and the outgoing busbar group (9) are all located at the bottom of the oil cooler (5), and the molded case circuit breaker (7) is located between the incoming busbar group (8) and the outgoing busbar group (9).

2. The high-power DC liquid-cooled charging terminal structure according to claim 1, characterized in that: The charging terminal cabinet (1) is a cuboid structure. The charging terminal cabinet (1) includes a cabinet frame (11) and a cabinet plate (12). The cabinet plate (12) is connected to the cabinet frame (11) by bolts.

3. The high-power DC liquid-cooled charging terminal structure according to claim 1, characterized in that: The charging gun (2) is a 1000A national standard oil-cooled DC charging gun with a temperature control PT1000. The charging gun (2) is electrically connected to the outgoing busbar group (9).

4. The high-power DC liquid-cooled charging terminal structure according to claim 1, characterized in that: The front door assembly (3) includes a door panel (31), which is connected to the charging terminal cabinet (1) by a hinge to achieve opening and closing; the door panel (31) is fixed with a ventilation louver (32) and a door lock fastener (33), which is connected to and disconnected from the charging terminal cabinet (1).

5. The high-power DC liquid-cooled charging terminal structure according to claim 1, characterized in that: The switching power supply (4) is model LRS-350, which converts AC power into stable DC power. The switching power supply (4) is electrically connected to the oil cooler (5), and the switching power supply (4) provides power to the oil cooler (5).

6. The high-power DC liquid-cooled charging terminal structure according to claim 1, characterized in that: The oil cooler (5) is connected to the charging gun (2) and the switching power supply (4) respectively, providing heat dissipation for the charging gun (2) when it is operating at high power.

7. The high-power DC liquid-cooled charging terminal structure according to claim 1, characterized in that: The contactor (6) is model SC-E7, and a shunt terminal group (61) is connected to the contactor (6).

8. The high-power DC liquid-cooled charging terminal structure according to claim 1, characterized in that: The molded case circuit breaker (7) is a DC circuit breaker of model NDM3Z-400-3P. Both ends are connected to the incoming busbar group and the outgoing busbar group by bolts to realize overload and short circuit protection of the entire circuit.

9. The high-power DC liquid-cooled charging terminal structure according to claim 1, characterized in that: The incoming busbar group (8) includes a TMY copper busbar. The end of the incoming busbar group (8) is connected to the molded case circuit breaker (7). The TMY copper busbar is provided with a TMY copper busbar mounting hole (81) for connecting to external equipment.

10. The high-power DC liquid-cooled charging terminal structure according to claim 1, characterized in that: The structure of the outgoing busbar group (9) is the same as that of the incoming busbar group (8).

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