A quick-connect fuel cell power distribution box

Abstract

This utility model belongs to the field of fuel cell accessories and discloses a quick-connect fuel cell power distribution box. The power distribution box consists of a top cover and a base; the base has a support surface for placing power distribution and control components, and a fixing pad is connected to the bottom of the base; a sealing ring is provided at the top edge of the base; the top cover is placed on the base. This utility model fuel cell power distribution box has low cost, small size, low failure rate, and high waterproof rating. The internal structure of this power distribution box fixes relays, fuses, and wiring harness terminals without the need for connectors, which effectively saves costs. Since there are no control chips and circuit boards inside, internal space is saved and the failure rate is reduced. This power distribution box has added waterproof plugs and sealing plugs, and the waterproof rating reaches IP67.

Description

Technical Field

[0001] This utility model belongs to the field of fuel cell accessories, specifically relating to a quick-connect fuel cell power distribution box. Background Technology

[0002] Fuel cell systems have broad application prospects in the energy field and have attracted much attention due to their high efficiency and environmental friendliness. However, the BOP (Balance of Plant) accessories on fuel cell systems require low-voltage power to operate normally, so fuel cells need to be equipped with low-voltage distribution boxes to supply low-voltage power to the various BOP accessories of the fuel cell system.

[0003] Currently, fuel cell companies typically use chip-type or circuit board-type power distribution boxes to power various BOP (Balance of Plant) accessories in their fuel cell systems. These are mainly chip-controlled or circuit board-controlled. Chip-controlled power distribution boxes have high operating costs and are relatively complex to design, leading to high maintenance costs. Circuit board-type power distribution boxes are also expensive due to the presence of the circuit board, and they are relatively large, difficult to design and arrange, and have a higher failure rate. Furthermore, most of these power distribution boxes currently have low waterproof ratings, making it difficult to meet the IP waterproof rating required for vehicles. This invention can effectively solve the problems of high cost, large size, high failure rate, and low waterproof rating of most power distribution boxes currently on the market. Utility Model Content

[0004] In view of the problems existing in the power distribution box of traditional fuel cell system, this utility model aims to provide a fuel cell power distribution box that is small in size, low in cost, low in failure rate, and has a high waterproof rating.

[0005] The technical solution of this utility model is as follows.

[0006] A quick-connect fuel cell power distribution box, comprising a top cover and a base; the base has an internal support surface for placing power distribution and control components, and a fixing pad is connected to the bottom of the base; a sealing ring is provided at the top edge of the base; the top cover is placed on the base.

[0007] Furthermore, the power distribution and control components include one or more of fuses and relays.

[0008] Furthermore, holes are provided on the supporting surface and the fixing pad.

[0009] Furthermore, a power distribution box space structure is formed between the supporting surface inside the base and the top cover. The relays and fuses inside the power distribution box are fixed through holes in the box structure. In this invention, there is no circuit board inside the power distribution box; all power distribution and control are achieved through external wiring. The schematic diagram of the power distribution box is shown below. Figure 1 As shown, the internal fuse and relay locations and external wiring of the distribution box are as follows: Figure 2 As shown. The location relationships of the distribution boxes are as follows. Figure 3 As shown, the waterproof rating of the distribution box can reach IP67 through the bottom waterproof plug and the sealing ring of the distribution box.

[0010] Furthermore, the relays and fuses inside the distribution box require specific types of crimp terminals and sealing plugs.

[0011] Furthermore, the wire clamping terminal and sealing plug, and the corresponding wire harness diameter are as follows:

[0012] For wire diameters of 0.35-0.5mm², use Delphi terminal model 12084201, and use Delphi sealing plugs model 12034365 or 15324983.

[0013] For wire diameter terminals of 0.5-1mm², Delphi terminal model 12077411 must be used, and Delphi sealing plugs model 12089444 or 15324985 must be used.

[0014] For wire diameters of 1-2mm², Delphi terminal model 15363933 must be used, and Delphi sealing plugs model 12015284 or 15324982 must be used.

[0015] For wire diameters of 2-3mm², Delphi terminal model 12129493 must be used, and Delphi sealing plugs model 12015359 or 15324980 must be used.

[0016] Compared with the prior art, the advantages of this utility model are:

[0017] This utility model of fuel cell power distribution box is low in cost, small in size, low in failure rate, and high in waterproof rating. The internal structure of this power distribution box is used to fix the relays, fuses, and wiring harness terminals, eliminating the need for connectors to fix the wiring harness terminals, which can effectively save costs. Since there are no control chips and circuit boards inside, internal space can be saved and the failure rate can be reduced. This power distribution box has added waterproof plugs and sealing plugs, and the waterproof rating has reached IP67. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the power distribution box in this embodiment.

[0019] Figure 2 This diagram shows the location of fuses and relays inside the distribution box and the external wiring.

[0020] Figure 3 This is an exploded view of the quick-connect fuel cell power distribution box of this utility model.

[0021] Figure 4 This is a top view of the quick-connect fuel cell power distribution box of this utility model;

[0022] Figure 5 This is a cross-sectional view of the quick-connect fuel cell power distribution box of this utility model;

[0023] Figure 6 This is a schematic diagram of the fixed pad structure.

[0024] The components shown in the diagram are: top cover 1, sealing ring 2, base 3, fixing pad 4, and support surface 5. Detailed Implementation

[0025] This embodiment provides a quick-connect fuel cell power distribution box, such as Figure 3-6 As shown, the power distribution box consists of an upper cover 1 and a base 3; the base 3 has a support surface 5 inside for placing power distribution and control components. In this embodiment, the power distribution and control components are fuses and relays. A fixing pad 4 is connected to the bottom of the base 3; a sealing ring 2 is provided at the top edge of the base 3; the upper cover 1 is placed on the base 3.

[0026] In this embodiment, holes are provided on the supporting surface 5 and the fixing pad 4. A power distribution box space structure is formed between the supporting surface 5 inside the base 3 and the upper cover 1. The relays and fuses inside the power distribution box require specific types of wire terminals and sealing plugs. The power distribution schematic diagram of the power distribution box in this embodiment is shown below. Figure 1 As shown. In this embodiment, the placement of fuses and relays inside the distribution box and the external wiring are as follows. Figure 2 As shown in this implementation case, Figure 2 The placement of fuses and relays must meet the following requirements. Figure 1 The power distribution diagram shown is shown.

[0027] In this embodiment, the wire clamping terminal and sealing plug, along with the corresponding wire harness diameter, are as follows:

[0028] For wire diameters of 0.35-0.5mm², use Delphi terminal model 12084201, and use Delphi sealing plugs model 12034365 or 15324983.

[0029] For wire diameter terminals of 0.5-1mm², Delphi terminal model 12077411 must be used, and Delphi sealing plugs model 12089444 or 15324985 must be used.

[0030] For wire diameters of 1-2mm², Delphi terminal model 15363933 must be used, and Delphi sealing plugs model 12015284 or 15324982 must be used.

[0031] For wire diameters of 2-3mm², Delphi terminal model 12129493 must be used, and Delphi sealing plugs model 12015359 or 15324980 must be used.

Claims

1. A quick-connect fuel cell power distribution box, characterized in that, The power distribution box consists of an upper cover (1) and a base (3); the base (3) has a support surface (5) for placing power distribution and control components inside, and a fixing pad (4) is connected to the bottom of the base (3); a sealing ring (2) is provided at the top edge of the base (3); the upper cover (1) is placed on the base (3).

2. The quick-connect fuel cell power distribution box as described in claim 1, characterized in that, The power distribution and control components include one or more of fuses and relays.

3. The quick-connect fuel cell power distribution box as described in claim 1, characterized in that, Holes are provided on the support surface (5) and the fixing pad (4).

4. The quick-connect fuel cell power distribution box as described in claim 1, characterized in that, The support surface (5) inside the base (3) and the top cover (1) form a power distribution box space structure.

5. The quick-connect fuel cell power distribution box as described in claim 4, characterized in that, The relays and fuses inside the distribution box require specific types of wire terminals and sealing plugs.

6. The quick-connect fuel cell power distribution box as described in claim 5, characterized in that, The wire terminals and sealing plugs, along with the corresponding wire harness diameters, are as follows: For wire diameters of 0.35-0.5mm², use Delphi terminal model 12084201, and use Delphi sealing plugs model 12034365 or 15324983. For wire diameter terminals of 0.5-1mm², Delphi terminal model 12077411 must be used, and Delphi sealing plugs model 12089444 or 15324985 must be used. For wire diameters of 1-2mm², Delphi terminal model 15363933 must be used, and Delphi sealing plugs model 12015284 or 15324982 must be used. For wire diameters of 2-3mm², Delphi terminal model 12129493 must be used, and Delphi sealing plugs model 12015359 or 15324980 must be used.

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