CN214477582U

CN214477582U - Fuel cell system and vehicle

Info

Publication number: CN214477582U
Application number: CN202120893656.6U
Authority: CN
Inventors: 毕计风; 王鹏; 岳也
Original assignee: Weishi Energy Technology Co Ltd
Current assignee: Weishi Energy Technology Co Ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-10-22
Anticipated expiration: 2031-04-27

Abstract

The utility model provides a fuel cell system and a vehicle, which relate to the technical field of new energy vehicles, wherein the fuel cell system comprises a galvanic pile shell, a DC/DC shell, a copper bar, a gland, a copper bar sealing element and a shell sealing element; the galvanic pile shell and the DC/DC shell are arranged side by side and are communicated with each other through a copper bar; the gland and the copper bar sealing piece are sleeved on the copper bar, and the copper bar sealing piece is clamped between the copper bar and the gland; the shell sealing element is sleeved on the peripheral side of the gland, and the gland is in sealing connection with the DC/DC shell through the shell sealing element; one side of the gland is hermetically connected with the electric pile shell. The vehicle includes a fuel cell system. The technical problem that the occupied space is large due to the fact that the high-voltage connector is used for connection in the prior art is solved, and the technical effect that the occupied space is small is achieved.

Description

Fuel cell system and vehicle

Technical Field

The utility model belongs to the technical field of new forms of energy vehicle technique and specifically relates to a fuel cell system and vehicle are related to.

Background

Fuel cells are the primary power source for fuel cell vehicles. The high-efficiency power generation device does not burn fuel and directly converts chemical energy of the fuel into electric energy in an electrochemical reaction mode.

Generally, a fuel cell mainly includes a stack case and a stack mounted inside the stack case. Since the output voltage of the fuel cell is unstable, a DC/DC converter is required to regulate the output voltage of the fuel cell.

The existing installation mode of the pile shell and the DC/DC converter is mainly connected through a high-voltage connector. When the high-voltage connectors are installed, the high-voltage connectors are installed on the stack shell one by one, then the wiring harness inside the stack shell is connected with the high-voltage connectors, and finally the electrical parts of the vehicle are plugged with the high-voltage connectors through the high-voltage plugs so as to supply power to the electrical parts of the vehicle through the fuel cell system.

However, the connection method using the high-voltage connector is not ideal for the fuel cell requiring a small space, because the high-voltage connector itself needs the connection of the power transmission cable, which results in a large occupied space.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fuel cell system and vehicle to alleviate the adoption high-pressure connector that exists among the prior art and connect, lead to the great technical problem of its occupation space.

In a first aspect, the present invention provides a fuel cell system, comprising: the galvanic pile comprises a galvanic pile shell, a DC/DC shell, a copper bar, a gland, a copper bar sealing piece and a shell sealing piece; the galvanic pile shell and the DC/DC shell are arranged side by side and are communicated with each other through the copper bar; the gland and the copper bar sealing piece are sleeved on the copper bar, and the copper bar sealing piece is clamped between the copper bar and the gland; the shell sealing element is sleeved on the outer peripheral side of the gland, and the gland is in sealing connection with the DC/DC shell through the shell sealing element; one side of the gland is connected with the galvanic pile shell in a sealing mode.

Furthermore, an inner mounting groove is formed in the gland, and the copper bar sealing piece is clamped in the inner mounting groove.

Furthermore, the gland is provided with a gland hole for penetrating the copper bar, and part of the hole wall of the gland hole is recessed along the radial direction to form the inner mounting groove.

Further, the gland comprises a first plate and a second plate which are connected; the first plate with the relative lateral part of second plate is seted up the relative half groove structure of notch, and is relative half groove structure lock forms interior mounting groove.

Furthermore, a gland hole for penetrating the copper bar is formed in the gland; the gland hole penetrates through the first plate and the second plate and is communicated with the half-groove structure.

Furthermore, the first plate and the second plate are fixedly connected through a fastener, so that opposite side surfaces of the first plate and the second plate are tightly attached.

Furthermore, the edge of the gland hole on the side surface of the first plate opposite to the second plate is provided with a flanging structure, and the flanging structure extends in the direction departing from the second plate; the inner diameter of the flanging structure is matched with the copper bar.

Furthermore, the peripheral surface of the first plate is inwards sunken to form an annular outer mounting groove; the shell sealing element is sleeved on the outer mounting groove.

Further, one side of the gland is connected with the stack shell in a sealing mode through a sealant.

Has the advantages that:

the utility model provides a fuel cell system, gland and copper bar sealing member all overlap and locate the copper bar, and the copper bar sealing member presss from both sides tightly between copper bar and gland, so set up and can realize the sealing between copper bar and the gland, seal through the copper bar sealing member and can have better leakproofness, can prevent hydrogen and vapor etc. in the pile shell from leaking to DC/DC shell; meanwhile, the shell sealing element is sleeved on the outer peripheral side of the gland, the gland is in sealing connection with the DC/DC shell through the shell sealing element, sealing between the gland and the DC/DC shell can be achieved through the shell sealing element, external dust, water and the like can be prevented from entering the DC/DC shell, and one side of the gland is in sealing connection with the pile shell.

According to the fuel cell system, the copper bar and the gland, the gland and the DC/DC shell, and the gland and the stack shell are sealed, so that the stack shell, the DC/DC shell and the copper bar can be tightly sealed, and the long-term sealing performance of the fuel cell system is stable. In addition, compared with a high-voltage connector, the fuel cell system adopts the copper bar for power transmission, has low requirement on space, can realize installability in limited space and has better sealing performance.

In a second aspect, the present invention provides a vehicle, comprising: the fuel cell system according to the foregoing embodiment.

Has the advantages that:

the utility model provides a vehicle includes aforementioned fuel cell system, from this, technical advantage and effect that this vehicle can reach include technical advantage and effect that fuel cell system can reach equally, no longer describe herein repeatedly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a cross-sectional view of a fuel cell system according to an embodiment of the present invention;

FIG. 2 is a sectional view of the connection structure of the gland and the fastener;

FIG. 3 is a schematic view of a connection structure of a copper bar, a gland and a fastener;

FIG. 4 is a schematic exploded view of the copper bar, gland, fastener, copper bar seal and housing seal;

FIG. 5 is a left side view of FIG. 3;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

fig. 7 is a schematic view of an installation of the fuel cell system.

Icon:

100-stack housing; 200-DC/DC housing; 300-copper bar; 400-pressing the cover; 500-copper bar sealing; 600-a housing seal; 700-a sealant;

410-inner mounting groove; 420-a first plate; 430-a second plate; 440-capping holes; 450-a fastener; 421-flanging structure; 422-outer mounting groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1 and 2, the present embodiment provides a fuel cell system including: the galvanic pile casing 100, the DC/DC casing 200, the copper bar 300, the gland 400, the copper bar sealing member 500 and the casing sealing member 600; the stack shell 100 and the DC/DC shell 200 are arranged side by side and are communicated with each other through a copper bar 300; the gland 400 and the copper bar sealing piece 500 are sleeved on the copper bar 300, and the copper bar sealing piece 500 is clamped between the copper bar 300 and the gland 400; the casing seal 600 is sleeved on the outer periphery of the gland 400, and the gland 400 is hermetically connected with the DC/DC casing 200 through the casing seal 600; one side of the gland 400 is hermetically connected to the stack case 100.

In the fuel cell system provided by this embodiment, the copper bar 300 is sleeved with the gland 400 and the copper bar sealing member 500, and the copper bar sealing member 500 is clamped between the copper bar 300 and the gland 400, so that the sealing between the copper bar 300 and the gland 400 can be realized, the sealing by the copper bar sealing member 500 can have better sealing performance, and hydrogen, water vapor and the like in the stack shell 100 can be prevented from leaking into the DC/DC shell 200; meanwhile, the case sealing member 600 is fitted around the outer circumferential side of the gland 400, and the gland 400 is hermetically connected to the DC/DC case 200 through the case sealing member 600, and the sealing between the gland 400 and the DC/DC case 200 can be achieved through the case sealing member 600, so that external dust, water, and the like can be prevented from entering the DC/DC case 200, and furthermore, one side of the gland 400 is hermetically connected to the stack case 100.

As can be seen from the foregoing, the fuel cell system can achieve relatively tight sealing between the stack casing 100, the DC/DC casing 200, and the copper bars 300 by achieving sealing between the copper bars and the gland, between the gland 400 and the DC/DC casing 200, and between the gland 400 and the stack casing 100, so that the long-term sealing performance of the fuel cell system is relatively stable. In addition, compared with a high-voltage connector, the fuel cell system adopts the copper bar for power transmission, has low requirement on space, can realize installability in limited space and has better sealing performance.

Further, an inner mounting groove 410 is formed in the gland 400, and the copper bar sealing member 500 is clamped in the inner mounting groove 410; so set up, can make copper bar sealing member 500 can the certain compressive capacity of pressurized in radial, can not break away from with copper bar 300 or gland 400 because of copper bar 300 is at the long-time upper and lower wriggling of Z direction, long-term sealing performance is more stable.

In this embodiment, copper bar sealing member 500 and casing sealing member 600 all can adopt high temperature resistant material, for example: silica gel, and the like.

The gland 400 can adopt an integrated structure as shown in fig. 1, and during installation, the copper bar sealing member 500 can be firstly clamped on the copper bar 300 and placed in the inner installation groove 410, and then the copper bar 300 is sleeved with the copper bar sealing member 500 and the inner installation groove.

Referring to fig. 1, in the gland 400 of the integrated structure, a gland hole 440 for passing the copper bar 300 is formed on the gland 400, and a part of the hole wall of the gland hole 440 is recessed along a radial direction to form an inner mounting groove 410.

In other embodiments, the gland 400 is a split structure.

Specifically, referring to fig. 2, the gland 400 includes a first plate 420 and a second plate 430 connected; the relative half groove structure of notch is seted up to the relative lateral part of first plate 420 and second plate 430, and mounting groove 410 in relative half groove structure lock formation, so set up, can be convenient for the processing of interior mounting groove 410 and be convenient for copper bar sealing member 500's installation.

In a specific process, half-groove structures with outward grooves may be respectively formed on one side of the first plate 420 and one side of the second plate 430, and then the opposite half-groove structures are fastened to connect the first plate 420 and the second plate 430 together, so that the inner mounting groove 410 may be formed.

During specific installation, the second plate 430 is sleeved on the copper bar 300, then the copper bar sealing piece 500 is sleeved on the copper bar 300, and the lower end of the copper bar sealing piece 500 is clamped in the half-groove structure of the second plate 430; the first plate 420 is sleeved on the copper bar 300, at this time, the upper end of the copper bar sealing member 500 is clamped in the half-groove structure of the first plate 420, and finally the first plate 420 and the second plate 430 are connected together.

Referring to fig. 2, in the press cover 400 of the split structure, a press cover hole 440 for the copper bar 300 to pass through is formed in the press cover 400; the capping hole 440 penetrates the first plate member 420 and the second plate member 430 and communicates with the half-groove structure.

Specifically, the capping hole 440 and the inner mounting groove 410 form a cross structure.

In one embodiment of the present application, referring to fig. 2, 3 or 6, the first plate 420 and the second plate 430 are fixedly connected by a fastener 450 to closely fit opposite sides of the first plate 420 and the second plate 430.

Alternatively, the fastening member 450 may be a bolt, a screw, a pin, etc., and, of course, any member that can connect the first plate 420 and the second plate 430 is within the scope of the present invention.

Further, referring to fig. 3 to 6, the edge of the gland hole 440 on the opposite side of the first plate 420 and the second plate 430 is provided with a flange structure 421, and the flange structure 421 extends in a direction away from the second plate 430; the inner diameter of the flanging structure 421 is matched with the copper bar 300, so that the copper bar 300 can be limited in the circumferential direction, and the shaking of the copper bar 300 is reduced; in addition, it is also possible to facilitate the insertion of the copper bar 300 into the first plate 420 through the flanging structure 421.

Referring to fig. 3, or fig. 4 or fig. 6, the outer circumferential surface of the first plate 420 is recessed inward to form an annular outer mounting groove 422, and the housing sealing member 600 is sleeved on the outer mounting groove 422, so that the housing sealing member 600 can be pressed by a certain amount in the radial direction, and cannot be separated from the gland 400 or the DC/DC housing 200 due to the long-term up-and-down creeping of the copper bar 300 in the Z direction, and the long-term sealing performance is relatively stable.

Further, one side of the gland 400 is hermetically connected to the stack case 100 by a sealant 700, and the sealant 700 can prevent external dust, water, and the like from entering the stack case 100.

Specifically, in the present embodiment, the bottom end surface of the second plate 430 is hermetically connected to the stack case 100 by the sealant 700.

Referring to fig. 7, in a specific installation, the copper bar 300 may be assembled first, and then the copper bar sealing structure may be assembled.

In summary, the fuel cell system can achieve bidirectional sealing by providing the case sealing member 600 and the sealing agent 700, that is, sealing the stack case 100 and the DC/DC case 200 at the same time.

The present embodiment also provides a vehicle including the aforementioned fuel cell system. The vehicle provided by the embodiment includes the fuel cell system, and therefore, technical advantages and effects that can be achieved by the vehicle also include technical advantages and effects that can be achieved by the fuel cell system, and detailed description is omitted here.

It should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A fuel cell system, characterized by comprising: the device comprises a pile shell (100), a DC/DC shell (200), a copper bar (300), a gland (400), a copper bar sealing piece (500) and a shell sealing piece (600);

the galvanic pile shell (100) and the DC/DC shell (200) are arranged side by side and are communicated with each other through the copper bar (300);

the gland (400) and the copper bar sealing piece (500) are sleeved on the copper bar (300), and the copper bar sealing piece (500) is clamped between the copper bar (300) and the gland (400);

the shell sealing member (600) is sleeved on the outer peripheral side of the gland (400), and the gland (400) is connected with the DC/DC shell (200) in a sealing mode through the shell sealing member (600);

one side of the gland (400) is hermetically connected with the stack shell (100).

2. The fuel cell system of claim 1, wherein the gland (400) is provided with an inner mounting groove (410), and the copper bar seal (500) is clamped in the inner mounting groove (410).

3. The fuel cell system as claimed in claim 2, wherein the gland (400) is provided with a gland hole (440) for penetrating the copper bar (300), and a part of the wall of the gland hole (440) is radially recessed to form the inner mounting groove (410).

4. The fuel cell system of claim 2, wherein the gland (400) comprises a first plate member (420) and a second plate member (430) connected;

the opposite side parts of the first plate (420) and the second plate (430) are provided with half-groove structures with opposite notches, and the opposite half-groove structures are buckled to form the inner mounting groove (410).

5. The fuel cell system as claimed in claim 4, wherein the gland (400) is provided with a gland hole (440) for penetrating the copper bar (300);

the gland hole (440) penetrates through the first plate (420) and the second plate (430) and is communicated with the half-groove structure.

6. The fuel cell system of claim 4, wherein the first plate (420) and the second plate (430) are fixedly connected by a fastener (450) to provide a snug fit of opposing sides of the first plate (420) and the second plate (430).

7. The fuel cell system according to claim 4, wherein the edge of the gland hole (440) on the side of the first plate member (420) opposite to the second plate member (430) is provided with a flange structure (421), and the flange structure (421) extends in a direction away from the second plate member (430);

the inner diameter of the flanging structure (421) is matched with the copper bar (300).

8. The fuel cell system according to claim 4, wherein an outer circumferential surface of the first plate member (420) is recessed inwardly to form an annular outer mounting groove (422);

the shell sealing element (600) is sleeved on the outer mounting groove (422).

9. The fuel cell system according to any one of claims 1 to 8, wherein a side of the gland (400) is hermetically connected to the stack case (100) by a sealant (700).

10. A vehicle, characterized by comprising: the fuel cell system as recited in any one of claims 1 to 9.