Immersion insulation sealing structure of hydrogen fuel cell cooling water system
Through the combined structure of the outer insulated joint and the inner insulated end plate, combined with the multi-layer insulated seal ring and drainage design, the insulation problem of the fuel cell cooling system in the case of rain or cleaning is solved, and efficient insulation performance and safety improvement is achieved.
Patent Information
- Application Number
- CN202422787141.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-11-15
AI Technical Summary
Existing fuel cell cooling systems cannot be effectively insulated in rain or cleaning, resulting in safety and reliability issues.
The combined structure of the outer insulated joint and the inner insulated end plate is adopted, combined with a multi-layer insulating seal ring and drainage design to achieve insulation between the coolant and the outside world, and automatically drain water during rain or cleaning.
It improves the insulation performance and safety of fuel cell systems, ensuring effective insulation in rain or cleaning, and has a simple structure and low cost.
Smart Images
Figure CN223282525U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fuel cells, and more specifically to an immersed insulating sealing structure of a hydrogen fuel cell cooling water system. Background Art
[0002] Among new energy vehicles, hydrogen fuel cell vehicles are expected to become the most ideal form of clean energy in the future. During fuel cell system operation, a cooling system is required to discharge waste heat generated by the fuel cell system to the outside world. Antifreeze (or cooling water) is typically used as the cooling medium. Due to the stack structure and the operating principles of the fuel cell, the charged cooling medium cannot be fully insulated. To ensure both personnel safety and system safety, all cooling system components that come into contact with the cooling medium must be insulated. This ensures that the system remains safely insulated even when exposed to water.
[0003] Fuel cell cooling systems inevitably have joints. Existing technologies for sealing these joints fall into two categories: one uses non-insulating components directly and places an insulating gasket on the mounting surface; the other uses insulating materials to design the component housing and seal it with a conventional insulating seal. These technologies require a very good environment and no external water exposure to insulate the system, which does not meet the market requirements for operation in rainy or washing conditions. They do not solve the insulation problem. Utility Model Content
[0004] The purpose of the utility model is to provide an immersed insulating sealing structure for a hydrogen fuel cell cooling water system, thereby improving the insulation performance of the fuel cell system, improving the safety and reliability of the system, and solving the insulation problem of the fuel cell when it is exposed to rain and cleaned.
[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:
[0006] A submerged insulating sealing structure for a hydrogen fuel cell cooling water system comprises an outer insulating joint and an inner insulating end plate, wherein the inner insulating end plate is provided with an inner insulating joint corresponding to the outer insulating joint, the outer side of the inner insulating joint is fixedly connected to an insulating connecting plate, one end of the outer insulating joint is fixedly connected to an outer insulating umbrella cover, the outer insulating joint is sleeved on the outer side of the inner insulating joint, a first sealing groove is provided on the outer side of the inner insulating joint near one end of the outer insulating joint, a first insulating sealing ring is provided in the first sealing groove, the outer insulating umbrella cover is provided on the outer side of the insulating connecting plate, the outer insulating umbrella cover and the insulating connecting plate are fixedly connected by bolts, a second sealing groove is provided on the side of the insulating connecting plate near the outer insulating umbrella cover, and a second insulating sealing ring is provided in the second sealing groove.
[0007] Furthermore, a plurality of drainage openings are provided on the outer insulating umbrella cover.
[0008] Compared with the prior art, the present invention has the following beneficial effects:
[0009] In the present invention, the fuel cell coolant flows inside the outer insulating joint and the inner insulating joint, and the coolant is charged. The charged coolant is blocked at the position of the first insulating sealing ring, thereby realizing the function of sealing the coolant and the outer side; at this time, the function of insulating the fuel cell coolant from the outside is also realized; when the external environment is rainy or washed, the rainwater on the outside first flows to the outside of the outer insulating umbrella cover, and the rainwater is isolated on the outside, thereby achieving the purpose of insulation; if the amount of rainwater is particularly large, causing the joint to be almost immersed, then a small amount of rainwater will enter the tiny gap between the outer insulating umbrella cover and the insulating connecting plate, and will be blocked when the rainwater reaches the position of the second insulating sealing ring, thereby achieving the function of immersion insulation. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;
[0011] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;
[0012] Figure 3 This is a schematic diagram of the structure of the middle and outer insulating joints of the present invention;
[0013] Figure 4 It is a cross-sectional view of the present utility model.
[0014] 1. Outer insulation joint; 2. Inner insulation end plate; 3. Inner insulation joint; 301. First sealing groove; 4. Insulation connecting plate; 401. Second sealing groove; 5. Outer insulation umbrella cover; 501. Drain port; 6. First insulation sealing ring; 7. Second insulation sealing ring. DETAILED DESCRIPTION
[0015] like Figures 1 to 4As shown, a submerged insulating sealing structure of a hydrogen fuel cell cooling water system includes an outer insulating joint 1 and an inner insulating end plate 2, wherein the inner insulating end plate 2 is provided with an inner insulating joint 3 corresponding to the outer insulating joint 1, and the outer side of the inner insulating joint 3 is fixedly connected to an insulating connecting plate 4, and one end of the outer insulating joint 1 is fixedly connected to an outer insulating umbrella cover 5, the outer insulating joint 1 is sleeved on the outside of the inner insulating joint 3, and a first sealing groove 301 is opened on the outer side of the inner insulating joint 3 near one end of the outer insulating joint 1, and a first insulating sealing ring 6 is provided in the first sealing groove 301, the outer insulating umbrella cover 5 is provided on the outside of the insulating connecting plate 4, and the outer insulating umbrella cover 5 and the insulating connecting plate 4 are fixedly connected by bolts, and a second sealing groove 401 is opened on the side of the insulating connecting plate 4 near the outer insulating umbrella cover 5, and a second insulating sealing ring 7 is provided in the second sealing groove 401.
[0016] The outer insulating umbrella cover 5 is provided with a plurality of drainage openings 501 .
[0017] Working principle:
[0018] The fuel cell coolant flows inside the outer insulating joint 1 and the inner insulating joint 3, and the coolant is charged; the charged coolant is blocked at the position of the first insulating sealing ring 6, achieving the function of sealing the coolant and the outside; at this time, the fuel cell coolant is also insulated from the outside world.
[0019] When exposed to rain or cleaning, due to the structure of the inner insulating joint 3 and the insulating connecting plate 4, rainwater from the outside preferentially flows onto the outside of the outer insulating umbrella cover 5, where it is isolated and thus achieves the purpose of insulation. If the amount of rain is particularly heavy, causing the joint to be almost submerged, a small amount of rainwater will enter the tiny gap between the outer insulating umbrella cover 5 and the insulating connecting plate 4, and will be blocked when the rainwater reaches the position of the second insulating sealing ring 7. At this time, the electrical insulation gap is composed of two parts: one is the gap position of the second insulating sealing ring 7, and the other is the gap position of the first insulating sealing ring 6, thereby achieving the function of immersion insulation.
[0020] After the rain stops or the cleaning stops, the rainwater in the small gap between the outer insulating umbrella cover 5 and the insulating connecting plate 4 flows along the inner side of the outer insulating umbrella cover 5 through the drain port 10 and out of the sealing structure by gravity, realizing the function of automatic drainage.
[0021] The utility model can improve the insulation performance of the fuel cell system, improve the system safety and reliability; the structural design is simple and the implementation cost is low; the two-layer sealing structure improves the airtight reliability and solves the insulation problem of the fuel cell in situations such as being exposed to rain and being cleaned.
[0022] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.
Claims
1. A submerged insulation sealing structure for a hydrogen fuel cell cooling water system, characterized by: The invention comprises an outer insulating joint (1) and an inner insulating end plate (2), wherein the inner insulating end plate (2) is provided with an inner insulating joint (3) corresponding to the outer insulating joint (1), an insulating connecting plate (4) is fixedly connected to the outer side of the inner insulating joint (3), one end of the outer insulating joint (1) is fixedly connected to an outer insulating umbrella cover (5), the outer insulating joint (1) is sleeved on the outer side of the inner insulating joint (3), a first sealing groove (301) is provided on the outer side of the inner insulating joint (3) near one end of the outer insulating joint (1), a first insulating sealing ring (6) is provided in the first sealing groove (301), the outer insulating umbrella cover (5) is provided on the outer side of the insulating connecting plate (4), the outer insulating umbrella cover (5) and the insulating connecting plate (4) are fixedly connected by bolts, a second sealing groove (401) is provided on the side of the insulating connecting plate (4) near the outer insulating umbrella cover (5), and a second insulating sealing ring (7) is provided in the second sealing groove (401).
2. The submerged insulating sealing structure for a hydrogen fuel cell cooling water system according to claim 1, wherein: The outer insulating umbrella cover (5) is provided with a plurality of drainage openings (501).