A hydrogen fuel system dc-dc wiring device

Abstract

The utility model discloses a kind of hydrogen fuel system DCDC wiring device, comprising: sealing plate, sealing cover, two input connectors, two positive and negative copper bar positioning insulating column, wiring sealing tool positive copper bar, wiring sealing tool negative copper bar;Sealing plate is fixed on the upper surface of DCDC converter upper cover plate, sealing cover is fixed on sealing plate, wiring sealing tool positive copper bar, wiring sealing tool negative copper bar are set on positive and negative copper bar positioning insulating column, the top of wiring sealing tool positive copper bar, wiring sealing tool negative copper bar is respectively connected with corresponding input connector, the bottom of wiring sealing tool positive copper bar is connected with the positive input copper bar of DCDC converter, the bottom of wiring sealing tool negative copper bar is connected with the negative input copper bar of DCDC converter.The utility model is simple in structure, can realize individual power-on and sealing state test to DCDC converter in the absence of electric pile;And greatly reduce the volume of raw material, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen fuel system technology, and in particular to a DC-DC wiring device for a hydrogen fuel system. Background Technology

[0002] Hydrogen energy is one of the most promising new energy sources to become the next pillar energy source, and hydrogen fuel cells, with their advantages of being clean and efficient, are the most ideal form of hydrogen energy utilization in the 21st century. In automotive hydrogen fuel cell power systems, the fuel cell stack generates electricity, and the direct current generated by the stack is converted into the voltage and current required by the electrical components via a DC-DC converter to supply power to the motor and other electrical components.

[0003] like Figure 1 As shown, in one implementation scheme, the current wiring device directly connects to the copper busbar of the DC-DC input via two copper busbars 16, which are fixed to the mounting plate. This scheme cannot seal the cavity and cannot meet the requirements for testing under IP67 conditions. Utility Model Content

[0004] The main objective of this invention is to propose a DC-DC wiring device for a hydrogen fuel system, which aims to enable separate testing of the DC-DC converter in both energized and sealed states without the presence of a fuel cell stack.

[0005] To achieve the above objectives, this utility model provides a DC-DC wiring device for a hydrogen fuel system, comprising: a sealing plate, a sealing cover, two input connectors, two positive and negative copper busbars for positioning and insulating, a positive copper busbar for the wiring sealing tool, a negative copper busbar for the wiring sealing tool, a first sealing ring, and a second sealing ring.

[0006] The sealing plate is fixed to the upper cover plate of the DC-DC converter with screws. The first sealing ring is disposed between the sealing plate and the upper cover plate of the DC-DC converter. The sealing cover is fixed to the sealing plate with screws. The second sealing ring is disposed between the sealing cover and the sealing plate. The positive and negative copper busbars of the wiring sealing tool are disposed on the corresponding positive and negative copper busbar positioning insulating posts. The tops of the positive and negative copper busbars of the wiring sealing tool are respectively connected to the corresponding input connectors. The bottom of the positive copper busbar of the wiring sealing tool is connected to the positive input copper busbar of the DC-DC converter, and the bottom of the negative copper busbar of the wiring sealing tool is connected to the negative input copper busbar of the DC-DC converter.

[0007] A further technical solution of this utility model is that the positive copper busbar and the negative copper busbar of the wiring sealing tool are Z-shaped.

[0008] A further technical solution of this utility model is that a square hole is provided at one corner of the sealing plate, and the sealing cover covers the square hole.

[0009] A further technical solution of this utility model is that it also includes a support foot disposed on the sealing plate.

[0010] A further technical solution of this utility model is that the number of the support legs is three, distributed at the three corners of the sealing plate.

[0011] A further technical solution of this utility model is that the support leg is screwed to the sealing plate.

[0012] A further technical solution of this utility model is that it also includes handles disposed around the sealing plate.

[0013] The beneficial effects of this utility model's hydrogen fuel system DC-DC wiring device are:

[0014] 1. This utility model has a simple structure and can perform independent testing of the DC-DC converter in both its energized and sealed states without the need for a fuel cell stack;

[0015] 2. This utility model is manufactured using CNC machining. The sealing cover, sealing plate, and support legs are disassembled into different parts and assembled with screws, which greatly reduces the volume of raw materials and lowers costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the wiring device in the prior art;

[0018] Figure 2 This is a schematic diagram of the DC-DC converter.

[0019] Figure 3 This is a schematic diagram of the assembly of the DC-DC converter and the hydrogen fuel cell stack.

[0020] Figure 4 This is a schematic diagram of the DC-DC wiring device and DC-DC converter assembled in the hydrogen fuel system of this utility model.

[0021] Figure 5 This is a schematic diagram of the back of the DC-DC wiring device for the hydrogen fuel system of this utility model;

[0022] Figure 6This is an exploded schematic diagram of the DC-DC wiring device and DC-DC converter of the hydrogen fuel system of this utility model after assembly;

[0023] Figure 7 This is a partial cross-sectional view of the DC-DC wiring device and DC-DC converter of the hydrogen fuel system of this utility model after assembly.

[0024] Explanation of icon numbers:

[0025] 1. DC-DC converter; 2. Positive input copper busbar; 3. Negative input copper busbar; 4. Top cover plate; 5. Hydrogen fuel system stack; 6. Sealing plate; 7. Sealing cover; 8. Input connector; 9. Support leg; 10. Handle; 11. Wiring sealing tool; 12. Wiring sealing tool; 13. First sealing ring; 14. Positive and negative copper busbar positioning insulating post; 15. Second sealing ring.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 2 As shown, the DC power generated by the hydrogen fuel cell stack 5 is input through the positive input copper busbar 2 and the negative input copper busbar 3. The upper cover plate 4 of the DC-DC converter 1 has an open structure, and the DC-DC converter 1 needs to meet the IP67 protection level during operation. Figure 3 As shown, the DC-DC converter 1 is suspended at the bottom of the hydrogen fuel cell stack 5. The upper cover plate 4 of the DC-DC converter 1 is attached to the bottom of the hydrogen fuel cell stack 5, and a sealing ring is used for sealing in the middle. The copper busbars of the hydrogen fuel cell stack 5 are connected to the positive input copper busbar 2 and the negative input copper busbar 3 of the DC-DC converter 1, achieving the functions of current conduction and sealing.

[0029] In the standalone testing phase, without the cooperation of the hydrogen fuel system stack 5, the DC-DC converter 1 does not have the function of sealing and wiring input current. In order to achieve the function of sealing and wiring input current of the DC-DC converter 1, this utility model proposes a DC-DC wiring device for a hydrogen fuel system.

[0030] like Figures 4 to 7As shown, a preferred embodiment of the hydrogen fuel system DC-DC wiring device of this utility model includes: a sealing plate 6, a sealing cover 7, two input connectors 8, two positive and negative copper busbar positioning insulating posts, a positive copper busbar 11 of the wiring sealing tool, a negative copper busbar 12 of the wiring sealing tool, a first sealing ring 13, and a second sealing ring 15.

[0031] The sealing plate 6 is fixed to the upper cover plate 4 of the DC-DC converter 1 by screws. The first sealing ring 13 is disposed between the sealing plate 6 and the upper cover plate 4 of the DC-DC converter 1. The sealing plate 6 is fixed to the upper cover plate 4 of the DC-DC converter 1 by screws. The second sealing ring 15 is disposed between the sealing cover 7 and the sealing plate 6.

[0032] The positive copper busbar 11 and negative copper busbar 12 of the wiring sealing tool are set on the corresponding positive and negative copper busbar positioning insulating posts. The positive and negative copper busbar positioning insulating posts realize the function of fixing and positioning the positive copper busbar 11 and negative copper busbar 12 of the wiring sealing tool.

[0033] The tops of the positive copper busbar 11 and the negative copper busbar 12 of the wiring sealing tool are respectively connected to one end of the corresponding input connector 8. The bottom of the positive copper busbar 11 of the wiring sealing tool is connected to the positive input copper busbar 2 of the DC-DC converter 1, and the bottom of the negative copper busbar 12 of the wiring sealing tool is connected to the negative input copper busbar 3 of the DC-DC converter 1.

[0034] In this embodiment, when testing the DC-DC converter 1, the other end of the input connector 8 is connected to an external fuel cell or load. Current input can be achieved through the input connector 8 and the corresponding wiring sealing tool positive copper busbar 11, wiring sealing tool negative copper busbar 12, positive input copper busbar 2, and negative input copper busbar 3, while meeting the IP67 airtightness requirements.

[0035] In this embodiment, the positive copper busbar 11 and the negative copper busbar 12 of the wiring sealing tool are Z-shaped. This Z-shaped configuration facilitates connection to the positive input copper busbar 2 and the negative input copper busbar 3 of the DC-DC converter 1.

[0036] A square hole is provided at one corner of the sealing plate 6, and the sealing cover 7 covers the square hole.

[0037] In this embodiment, the hydrogen fuel system DC-DC wiring device further includes three support legs 9 disposed on the sealing plate 6. The support legs 9 are located at the three corners of the sealing plate 6 and are screwed to the sealing plate 6.

[0038] In this embodiment, the support leg 9 is provided to facilitate the assembly of the hydrogen fuel system DC-DC wiring device and DC-DC converter 1. During assembly, the hydrogen fuel system DC-DC wiring device is first placed upside down and laid flat. At this time, the support leg 9 provides support. Then, the DC-DC converter 1 is fastened to the hydrogen fuel system DC-DC wiring device for locking.

[0039] In this embodiment, the hydrogen fuel system DC-DC wiring device further includes handles 10 disposed around the sealing plate 6. By providing handles 10 around the sealing plate 6, this embodiment facilitates the handling of the heavy DC-DC converter 1.

[0040] The beneficial effects of this utility model's hydrogen fuel system DC-DC wiring device are:

[0041] 1. This utility model has a simple structure and can perform independent testing of the DC-DC converter in both its energized and sealed states without the need for a fuel cell stack;

[0042] 2. This utility model is manufactured using CNC machining. The sealing cover, sealing plate, and support legs are disassembled into different parts and assembled with screws, which greatly reduces the volume of raw materials and lowers costs.

[0043] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A DC-DC wiring device for a hydrogen fuel system, characterized in that, include: Sealing plate, sealing cover, two input connectors, two positive and negative copper busbars positioning insulating posts, positive copper busbar of wiring sealing tool, negative copper busbar of wiring sealing tool, first sealing ring and second sealing ring; The sealing plate is fixed to the upper cover plate of the DC-DC converter with screws. The first sealing ring is disposed between the sealing plate and the upper cover plate of the DC-DC converter. The sealing cover is fixed to the sealing plate with screws. The second sealing ring is disposed between the sealing cover and the sealing plate. The positive and negative copper busbars of the wiring sealing tool are disposed on the corresponding positive and negative copper busbar positioning insulating posts. The tops of the positive and negative copper busbars of the wiring sealing tool are respectively connected to the corresponding input connectors. The bottom of the positive copper busbar of the wiring sealing tool is connected to the positive input copper busbar of the DC-DC converter, and the bottom of the negative copper busbar of the wiring sealing tool is connected to the negative input copper busbar of the DC-DC converter.

2. The hydrogen fuel system DC-DC wiring device according to claim 1, characterized in that, The positive and negative copper busbars of the wiring sealing tool are Z-shaped.

3. The DCDC wiring device for a hydrogen fuel system according to claim 1, characterized in that, A square hole is provided at one corner of the sealing plate, and the sealing cover covers the square hole.

4. The DCDC wiring device for a hydrogen fuel system according to claim 1, characterized in that, It also includes feet mounted on the sealing plate.

5. The DCDC wiring device for a hydrogen fuel system according to claim 4, characterized in that, The number of legs is three, distributed at the three corners of the sealing plate.

6. The DCDC wiring device for a hydrogen fuel system according to claim 4, characterized in that, The support leg is screwed to the sealing plate.

7. The DCDC wiring device for a hydrogen fuel system according to claim 1, characterized in that, It also includes handles disposed around the sealing plate.

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