High-temperature-resistant copper bar wiring device for charging pile

Abstract

A high-temperature-resistant copper bar wiring device for a charging pile comprises an electrical box body which is provided with an accommodating cavity; the copper bar seat is arranged in the accommodating cavity, and a plurality of wiring ports are formed in the copper bar seat; the copper bar wiring terminal assembly is matched on any wiring port on the copper bar seat, so that the copper bar wiring terminal assembly is electrically connected with the copper bar seat; a plurality of step-shaped supporting bodies are arranged on the side wall of the containing cavity, and the multiple copper bar bases are arranged on the step-shaped supporting bodies step by step so that the longitudinal positions of the copper bar bases can be staggered. According to the utility model, the copper bar seats are staggered in the longitudinal direction, so that the copper bar wiring terminal assemblies connected to the copper bar seats are also staggered in the longitudinal direction, thereby enabling the copper bar wiring terminal assemblies to be connected in a natural and smooth posture (without bending). The connection reliability is improved, the service life is prolonged, the heat dissipation performance is improved, and the appearance is more attractive.

Description

Technical Field

[0001] The utility model relates to a high-temperature resistant copper bar wiring device for a charging pile. Background Art

[0002] A copper bar wiring device is a commonly used connection device in electrical engineering, mainly used to achieve electrical connection between different electrical devices in a power distribution system. Due to its excellent electrical conductivity, thermal conductivity, and workability, copper bars are widely used in various power equipment and distribution cabinets.

[0003] A new energy vehicle charging pile is an infrastructure specifically designed to provide charging services for electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs). With the popularization of new energy vehicles, the number and distribution of charging piles are also increasing continuously.

[0004] Charging piles are usually divided into three types: slow charging (AC charging): usually with a power between 3kW and 7kW, suitable for home use, and the charging time is relatively long, generally taking several hours to fully charge the battery. Fast charging (DC charging): usually with a power between 20kW and 150kW, which can charge the battery in a short time, and it can be charged to 80% in 30 minutes to 1 hour. Ultra-fast charging: a charging facility with a higher power, usually above 150kW, which can provide charging services in a shorter time. With the rapid development of technology and the needs of the consumer market, after 400V and 600V charging voltages, the most advanced technology has entered the 800V fast charging era. For example, brands such as a certain Peng, a certain Mi, a certain Ke, a certain Di, and a certain Lai in the market have successively launched their own 800V new energy vehicles and supporting charging piles.

[0005] In high-voltage, even ultra-high-voltage charging piles, for the circuit structure (higher conductive power and greater heat generation), such as the electrical conductivity and high-temperature resistance of the copper bar wiring device, more stringent requirements are imposed.

[0006] As an example of the prior art, refer to patent document CN218482407U, which discloses a terminal block for a charging pile, including: a mounting plate and a busbar terminal block assembly; the mounting plate is used to fix the busbar terminal block assembly; the busbar terminal block assembly includes a support plate and a first input busbar, a second input busbar and an output busbar arranged on the support plate in sequence along the length direction of the support plate; the support plate is detachably mounted on the mounting plate, and the support plate is sequentially penetrated by the first input busbar, the second input busbar and the output busbar along its own length direction, and a first partition plate is respectively arranged between the first input busbar and the second input busbar and between the second input busbar and the output busbar. This technical example has certain defects during use, for example: 1. The wiring part is arranged densely, but does not have a heat dissipation structure. Therefore, in the high-voltage charging pile, the heat cannot be dissipated quickly, there will be a risk of electricity consumption, and it is very easy to reduce the voltage and power, resulting in the high-voltage charging pile unable to play its advertised high-voltage charging function; 2. The upper and lower rows of wiring structures are not spatially displaced, which makes wiring difficult and requires bending the cables. The performance of the cables will be affected, and the cables will be more dense, which will intensify the heat accumulation in local areas, resulting in poor heat dissipation and failure to achieve the expected results. Summary of the invention

[0007] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a high temperature resistant copper busbar wiring device for a charging pile.

[0008] The technical solution of the utility model to solve the technical problem is: a high temperature resistant copper busbar wiring device for a charging pile, comprising:

[0009] An electrical box having a receiving cavity;

[0010] A copper busbar seat is arranged in the accommodating cavity, and has a plurality of wiring ports;

[0011] A copper bar terminal assembly is matched with any one of the wiring ports on the copper bar seat so that the copper bar terminal assembly forms an electrical connection with the copper bar seat;

[0012] The side wall of the accommodating cavity is provided with a plurality of stepped support bodies, and the copper bar seats are in plurality and are arranged step by step on each stepped support body, so that the longitudinal positions of each copper bar seat are staggered with each other.

[0013] In some preferred embodiments of the present invention, a plurality of heat dissipation through holes are provided on the upper and lower end surfaces of the electrical box.

[0014] In some preferred embodiments of the present invention, the stepped support body is formed by assembling a plurality of blocks of different heights, and the blocks are made of aluminum or copper.

[0015] In some preferred embodiments of the utility model, a heat dissipation channel is opened in the stepped support body, a heat dissipation oil pipe is pre-buried in the heat dissipation channel, the heat dissipation oil pipe is filled with heat dissipation oil, and the heat dissipation oil pipe is connected to an external circulation pump body and a heat exchanger.

[0016] Specifically, the copper busbar terminal assembly includes a copper busbar terminal body, a diffused contact gasket and a fastening screw, wherein the fastening screw connects the copper busbar terminal body to the wiring port, and the diffused contact gasket is clamped between the fastening screw and the copper busbar terminal body.

[0017] Furthermore, the diffusion type contact pad is rectangular, and the corners of the diffusion type contact pad are bent inwards to form a corner area, and the corner area is in contact with the copper busbar seat.

[0018] In some preferred embodiments of the utility model, a metal heat sink is provided between the copper busbar seat and the copper busbar terminal assembly, and a positioning groove is provided on the metal heat sink, and a partition rib is provided on the copper busbar seat, and the partition rib is snapped into the positioning groove, and one wiring port is correspondingly provided between adjacent partition ribs.

[0019] Furthermore, the metal heat sink extends backward to form a back plate area, and heat sink fins are protruding from the back plate area.

[0020] In some preferred embodiments of the utility model, the lower end surface of the electrical box is provided with an air suction fan, and the air suction fan is directly facing the heat dissipation through hole on the lower end surface of the electrical box;

[0021] An exhaust fan is disposed on the upper end surface of the electrical box, and the exhaust fan is directly opposite to the heat dissipation through holes on the upper end surface of the electrical box.

[0022] The beneficial effects of the utility model are:

[0023] 1. The staggered longitudinal positions of the copper busbar seats enable the copper busbar terminal assemblies connected to the copper busbar seats to be staggered longitudinally, so that the copper busbar terminal assemblies can be connected in a natural and smooth posture (without bending), thereby improving connection reliability, extending service life, improving heat dissipation performance and being more beautiful.

[0024] Second, the layout of the copper busbar terminal assembly is more uniform and reasonable, so that the heat generation in each area is more balanced, and there will be no large amount of heat accumulation in some areas, which is helpful for heat dissipation to ensure the overall circuit usage function, especially to ensure that the charging pile can output power continuously and stably for a long time at its rated power and voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present utility model.

[0026] Figure 2 It is a sectional view of the present utility model.

[0027] Figure 3 It is a combined schematic diagram of stepped supports.

[0028] Figure 4 It is a disassembled schematic diagram of stepped supports.

[0029] Figure 5 It is a schematic diagram of the principle of Embodiment 3.

[0030] Figure 6 It is a disassembled schematic diagram of the partial structure of the copper bar terminal assembly and the copper bar seat.

[0031] Figure 7 It is a structural schematic diagram of the metal heat dissipation plate in Embodiment 4.

[0032] Figure 8 It is a structural schematic diagram of Embodiment 2.

[0033] In the figure: 1. Electrical box; 11. Accommodation cavity; 111. Stepped support; 1111. Block; 1112. Heat dissipation channel; 1113. Heat dissipation oil pipe; 12. Heat dissipation through hole; 13. Suction fan; 14. Exhaust fan; 15. Circulation pump body; 16. Heat exchanger; 2. Copper bar seat; 21. Wiring port; 22. Partition rib; 3. Copper bar terminal assembly; 31. Copper bar terminal body; 32. Diffusion type contact gasket; 321. Fold angle area; 33. Fastening screw; 4. Metal heat dissipation plate; 41. Positioning groove; 42. Back plate area; 43. Heat dissipation fin. Detailed implementation manners

[0034] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments are only specific elaborations of the present utility model, and their purpose is to enable those skilled in the art to better understand the technical solutions of the present utility model, and should not be regarded as a limitation of the present utility model.

[0035] In the description of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] Embodiment 1

[0038] Referring to Figures 1 to 8 , a high-temperature resistant copper busbar wiring device for a charging pile, comprising: an electrical box body 1 having an accommodation cavity 11; a copper busbar seat 2 disposed in the accommodation cavity 11, the copper busbar seat 2 having a plurality of wiring ports 21 capable of simultaneously accessing multiple circuit structures (such as a copper busbar terminal assembly 3, etc.); a copper busbar terminal assembly 3 mating with any one of the wiring ports 21 on the copper busbar seat 2 so that the copper busbar terminal assembly 3 forms an electrical connection with the copper busbar seat 2.

[0039] Different from the prior art, several stepped supports 111 are provided on the side wall of the accommodation cavity 11, and a plurality of copper busbar seats 2 are arranged step by step on each stepped support 111 so that the longitudinal positions of the copper busbar seats 2 are staggered from each other. The advantages are as follows: First, the staggering of the longitudinal positions of the copper busbar seats 2 enables the copper busbar terminal assemblies 3 connected to the copper busbar seats 2 to be staggered in the longitudinal position as well, so that the copper busbar terminal assemblies 3 can be connected in a natural and smooth posture (without bending), improving the connection reliability, extending the service life, improving the heat dissipation performance and being more beautiful; Second, it makes the layout of the copper busbar terminal assemblies 3 more uniform and reasonable, so that the heat generation in each area is relatively balanced, and there will be no situation where a large amount of heat accumulates locally, which helps with heat dissipation to ensure the overall circuit usage function, especially to ensure that the charging pile can continuously and stably output power for a long time under its rated power and voltage.

[0040] Embodiment 2

[0041] On the basis of the structure of Embodiment 1, in order to further improve the heat dissipation performance in this embodiment, the adopted method is: Referring to Figures 1 to 2 , a plurality of heat dissipation through holes 12 are opened on the upper and lower end faces of the electrical box body 1 to strengthen the air flow inside and outside the electrical box body 1, and then discharge the internal heat to the outside and bring the low-temperature air outside into the inside to achieve heat and cold exchange.

[0042] More preferably, referring to Figure 8The lower end surface of the electrical box 1 is provided with an air suction fan 13, and the air suction fan 13 faces the heat dissipation through hole 12 on the lower end surface of the electrical box 1; the upper end surface of the electrical box 1 is provided with an air exhaust fan 14, and the air exhaust fan 14 faces the heat dissipation through hole 12 on the upper end surface of the electrical box 1. By setting the air suction fan 13 and the air exhaust fan 14, the air can be guided, so that the external air enters the electrical box 1 from the heat dissipation through hole 12 on the lower end surface, and the high-temperature air in the electrical box 1 is discharged from the heat dissipation through hole 12 on the upper end surface to the outside of the electrical box 1, so as to realize efficient air flow and rapid heat exchange functions, and enable the heat inside the electrical box 1 to be quickly discharged, providing a better working environment temperature.

[0043] Embodiment 3

[0044] Based on the structure of the first embodiment, in order to further improve the heat dissipation performance, another method adopted in this embodiment is: Figures 3 to 4 The step-shaped support body 111 is formed by assembling a number of blocks 1111 of different heights, and the blocks 1111 are aluminum or copper blocks. The above structure has the following advantages: first, the step-shaped support body 111 realizes modular design, and can be assembled into different shapes according to needs to meet diverse usage requirements; second, the aluminum or copper blocks have better thermal conductivity, so that the heat on the copper busbar seat 2 and the copper busbar terminal assembly 3 can be guided and discharged to the outside more quickly.

[0045] Further, refer to Figure 5 The step-shaped support body 111 is provided with a heat dissipation channel 1112, and a heat dissipation oil pipe 1113 is pre-buried in the heat dissipation channel 1112. The heat dissipation oil pipe 1113 is filled with heat dissipation oil, and the heat dissipation oil pipe 1113 is connected to the external circulation pump body 15 and the heat exchanger 16. The above heat dissipation oil circuit structure can directly act on the step-shaped support body 111, quickly absorb and discharge the heat on the step-shaped support body 111, and realize the heat dissipation function; secondly, it can indirectly act on the copper bar seat 2 and the copper bar terminal assembly 3 to reduce the temperature on the copper bar seat 2 and the copper bar terminal assembly 3 and improve their working performance.

[0046] Embodiment 4

[0047] Based on the structure of the first embodiment, in order to further improve the heat dissipation performance, another method adopted in this embodiment is: Figure 6, a metal heat dissipation plate 4 is provided between the copper busbar seat 2 and the copper busbar terminal assembly 3, and a positioning groove 41 is formed on the metal heat dissipation plate 4. A partition rib 22 is provided on the copper busbar seat 2, and the partition rib 22 is snapped into the positioning groove 41, playing a role in positioning connection and space separation. One wiring port 21 is correspondingly arranged between adjacent partition ribs 22, making the structural arrangement clearer and facilitating later wiring.

[0048] Further, referring to Figure 7 , a back plate area 42 is formed by the backward extension of the metal heat dissipation plate 4, and heat dissipation fins 43 are convexly provided on the back plate area 42. Through the arrangement of the heat dissipation fins 43, the heat dissipation performance of the metal heat dissipation plate 4 can be effectively improved. Specifically, the heat dissipation fins 43 provide a larger surface area, helping heat to be conducted from the device to the surrounding environment faster. Maintaining an appropriate temperature can ensure that the charging pile operates in the best state, thereby improving its performance. And, the design of the heat dissipation fins 43 can usually promote the convection of air, thereby improving the heat conduction efficiency.

[0049] Embodiment Five

[0050] Based on the structure of any of the foregoing embodiments, this embodiment provides a preferred structural solution for the copper busbar terminal assembly 3, specifically: referring to Figure 6 , the copper busbar terminal assembly 3 includes a copper busbar terminal body 31, a diffusion type contact gasket 32, and a fastening screw 33. The fastening screw 33 connects the copper busbar terminal body 31 to the wiring port 21, and the diffusion type contact gasket 32 is clamped between the fastening screw 33 and the copper busbar terminal body 31. The fastening screw 33 plays a role in connecting and fixing. The copper busbar terminal body 31 is a part of the circuit. The diffusion type contact gasket 32 can increase the contact area between the copper busbar terminal body 31 and the copper busbar seat 2. A larger contact area can reduce the contact resistance, thereby reducing energy loss and heat generation, and can also disperse the current, improving the durability of the connection part and reducing the risk of damage caused by local overheating or arc.

[0051] Preferably, the diffusion type contact gasket 32 is rectangular, and the corners of the diffusion type contact gasket 32 are bent inward to form a folding corner area 321, and the folding corner area 321 abuts against the copper busbar seat 2. Through the setting of the folding corner area 321, the mechanical stability of the connection can be improved, and the problem of poor contact caused by vibration or pulling can be reduced.

[0052] It should be noted that other technical solutions of the present invention belong to the prior art, so they will not be elaborated.

[0053] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as within the protection scope of the present utility model.

Claims

1. A high temperature resistant copper busbar wiring device for a charging pile, comprising: An electrical box (1) having a receiving cavity (11); A copper busbar seat (2) is arranged in the accommodating cavity (11), and the copper busbar seat (2) has a plurality of wiring ports (21); A copper bar wiring terminal assembly (3) which is matched with any wiring port (21) on the copper bar seat (2) so that the copper bar wiring terminal assembly (3) and the copper bar seat (2) are electrically connected; Features: The side wall of the accommodating cavity (11) is provided with a plurality of stepped support bodies (111), and the copper bar seats (2) are provided in plurality and are arranged step by step on each stepped support body (111), so that the longitudinal positions of each copper bar seat (2) are staggered.

2. The high temperature resistant copper busbar wiring device for a charging pile according to claim 1, characterized in that: The upper and lower end surfaces of the electrical box body (1) are provided with a plurality of heat dissipation through holes (12).

3. The high temperature resistant copper busbar wiring device for a charging pile according to claim 1, characterized in that: The stepped support body (111) is formed by assembling a plurality of blocks (1111) of different heights, and the blocks (1111) are aluminum or copper blocks.

4. The high temperature resistant copper busbar wiring device for a charging pile according to claim 1, characterized in that: A heat dissipation channel (1112) is provided in the stepped support body (111), a heat dissipation oil pipe (1113) is pre-buried in the heat dissipation channel (1112), the heat dissipation oil pipe (1113) is filled with heat dissipation oil, and the heat dissipation oil pipe (1113) is connected to an external circulation pump body (15) and a heat exchanger (16).

5. The high temperature resistant copper busbar wiring device for a charging pile according to claim 1, characterized in that: The copper busbar terminal assembly (3) comprises a copper busbar terminal body (31), a diffused contact gasket (32) and a fastening screw (33), wherein the fastening screw (33) connects the copper busbar terminal body (31) to the wiring port (21), and the diffused contact gasket (32) is sandwiched between the fastening screw (33) and the copper busbar terminal body (31).

6. The high temperature resistant copper busbar wiring device for a charging pile according to claim 5, characterized in that: The diffusion type contact pad (32) is rectangular, and the corners of the diffusion type contact pad (32) are bent inwards to form a corner area (321), and the corner area (321) is in contact with the copper bar seat (2).

7. The high temperature resistant copper busbar wiring device for a charging pile according to claim 1, characterized in that: A metal heat sink (4) is provided between the copper bar seat (2) and the copper bar terminal assembly (3), and a positioning groove (41) is provided on the metal heat sink (4). A separation rib (22) is provided on the copper bar seat (2), and the separation rib (22) is inserted into the positioning groove (41), and one of the connection ports (21) is correspondingly provided between adjacent separation ribs (22).

8. The high temperature resistant copper busbar wiring device for a charging pile according to claim 7, characterized in that: The metal heat sink (4) extends backward to form a back plate area (42), and heat sink fins (43) are protruding from the back plate area (42).

9. The high temperature resistant copper busbar wiring device for a charging pile according to claim 2, characterized in that: The lower end surface of the electrical box (1) is provided with an air suction fan (13), and the air suction fan (13) is directly opposite to the heat dissipation through hole (12) on the lower end surface of the electrical box (1); An exhaust fan (14) is provided on the upper end surface of the electrical box (1), and the exhaust fan (14) is directly opposite to the heat dissipation through hole (12) on the upper end surface of the electrical box (1).

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