CN212033158U

CN212033158U - Fixed knot constructs and fuel cell pile device

Info

Publication number: CN212033158U
Application number: CN202020993959.0U
Authority: CN
Inventors: 崔新然; 曹婷婷; 王茁; 米新艳; 张克金; 李军泽
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2020-11-27
Anticipated expiration: 2030-06-03

Abstract

The utility model discloses a fixing structure and a fuel cell stack device, belonging to the technical field of fuel cell assembly, wherein the fixing structure comprises a shell, a closed cavity is arranged in the shell, and the closed cavity is used for accommodating a fuel cell stack; the support bars are arranged at the bottom of the shell at intervals and are used for supporting the fuel cell stack; and the supports are used for limiting the horizontal position of the fuel cell stack, and when the fuel cell stack is positioned in the closed cavity, the supports are in contact with the side wall of the fuel cell stack. The utility model provides a fixed knot constructs and fuel cell pile can effectual support fuel cell pile to prevent that the main part dislocation from appearing, the middle part waist collapsed's condition when complicated driving operating mode in fuel cell pile.

Description

Fixed knot constructs and fuel cell pile device

Technical Field

The utility model relates to a fuel cell assembles technical field, especially relates to a fixed knot constructs and fuel cell pile device.

Background

The fuel cell stack can be applied to the fields of new energy automobiles and the like, and particularly, the fuel cell stack needs to be placed in a shell, and then the shell is installed on the new energy automobiles.

In the prior art, the fuel cell stack and the housing are fixed by fixing end plates of the fuel cell stack and the housing through a fixing connector, wherein the end plates of the fuel cell stack are located at two ends of the fuel cell stack along a length direction of the fuel cell stack. Specifically, the end plate and the case have screw holes, and the end plate is fixed to the case by screwing screws into the screw holes, and the main body of the fuel cell stack is fixed to the end plate.

However, when the length of the fuel cell stack is long, the situation that the stress of the fuel cell stack is uneven is easily caused by only fixing the two ends of the fuel cell stack, and further, when a new energy automobile is in a complex driving working condition, the fuel cell stack is easily subjected to problems of main body dislocation, waist collapse and the like due to bumping, so that the use safety and stability of the fuel cell stack are affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fixed knot constructs and fuel cell pile device, fixed knot structure can effectual support fuel cell pile, and prevents that the fuel cell pile from the condition that main part dislocation, middle part collapsed the waist when complicated driving operating mode appear.

As the conception, the utility model adopts the technical proposal that:

a fixing structure for fixing a fuel cell stack in a fuel cell stack apparatus, comprising:

the fuel cell stack comprises a shell, a fuel cell stack and a fuel cell stack, wherein a closed cavity is formed in the shell and used for accommodating the fuel cell stack;

the support bars are arranged at the bottom of the shell at intervals and are used for supporting the fuel cell stack;

the support is used for limiting the horizontal position of the fuel cell stack, and when the fuel cell stack is positioned in the closed cavity, the support is in contact with the side wall of the fuel cell stack.

Optionally, the plurality of support bars include two support bar groups, the number of the support bars in the two support bar groups is the same, and the two support bar groups are symmetrically arranged.

Optionally, the number of the supporting bars in each supporting bar group is even.

Optionally, the plurality of support bars comprise a plurality of transverse support bars and a plurality of longitudinal support bars, the transverse support bars are located between two adjacent longitudinal support bars, or the longitudinal support bars are located between two adjacent transverse support bars.

Optionally, the cross-sectional shape of the supporting bar is trapezoid, rectangle, circle or polygon.

Optionally, the casing includes a bottom casing and an upper cover which are hermetically connected, and the support bars and the brackets are fixed on the bottom casing.

Optionally, the bottom case is provided with a plurality of first protrusions, the first protrusions correspond to the support bars one to one, and the support bars are fixed on the corresponding first protrusions.

Optionally, the bottom case is further provided with a plurality of second protrusions, the plurality of second protrusions correspond to the plurality of brackets one to one, and the brackets are fixed to the corresponding second protrusions.

Optionally, the support includes a bottom plate and a vertical plate, which are vertically connected, the bottom plate is fixed on the housing, and the vertical plate can contact with a side wall of the fuel cell stack.

The utility model provides a fuel cell galvanic pile device, includes fuel cell galvanic pile and foretell fixed knot structure, be equipped with a plurality of recesses on the end plate of fuel cell galvanic pile, it is a plurality of recess and a plurality of the support bar one-to-one, the support bar can block into its correspondence in the recess.

The beneficial effects of the utility model include at least:

the utility model provides an among the fixed knot constructs, set up a plurality of support bars in the casing for the support bar can support the front portion, mid portion and the rear portion of fuel cell pile, and then makes when the length of fuel cell pile is longer, and the support bar also can effectual support fuel cell pile, and prevents that the main part dislocation from appearing, the middle part condition of collapsing the waist in the fuel cell pile when complicated driving operating mode, thereby has guaranteed the safety in utilization and the stability of fuel cell pile.

Drawings

Fig. 1 is a perspective view of a fixing structure provided in an embodiment of the present invention;

fig. 2 is a schematic diagram of an exploded structure of a fuel cell stack device according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an exploded structure of a fuel cell stack device according to an embodiment of the present invention;

fig. 4 is a top view of a fuel cell stack assembly according to an embodiment of the present invention;

fig. 5 is a cross-sectional view a-a of fig. 4 in accordance with the present invention;

figure 6 is a cross-sectional view B-B of figure 4 in accordance with the present invention;

fig. 7 is a schematic structural view of a bottom case and a supporting bar according to an embodiment of the present invention;

fig. 8 is a schematic view of a bottom case provided in an embodiment of the present invention;

fig. 9 is a schematic view of a bracket provided by an embodiment of the present invention;

fig. 10 is a schematic view of a supporting bar according to an embodiment of the present invention.

In the figure:

1. a fixed structure; 11. a housing; 111. a bottom case; 112. an upper cover; 113. a first protrusion; 114. a second protrusion; 115. (ii) a 12. A supporting strip; 121. a first mounting hole; 13. a support; 131. a base plate; 132. a vertical plate; 133. a reinforcing plate; 134. a second mounting hole; 2. a fuel cell stack; 21. an end plate; 211. and (4) a groove.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

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 orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, 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 for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable 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.

The embodiment provides a fixing structure 1 for fixing a fuel cell stack 2 in a fuel cell stack device, and the fixing structure 1 can stably fix the fuel cell stack 2 and can reduce the probability of waist collapse and dislocation of the fuel cell stack 2.

As shown in fig. 1 to 10, the fixing structure 1 includes a housing 11, and a plurality of supporting bars 12 and a plurality of brackets 13 fixed on the housing 11.

The casing 11 has a closed cavity therein, and this closed cavity is used for holding fuel cell stack 2, and a plurality of support bars 12 interval sets up in the bottom of casing 11, and a plurality of support bars 12 all are used for supporting fuel cell stack 2. Optionally, a plurality of support bars 12 may be disposed at intervals along the length direction of the casing 11, or a plurality of support bars 12 may be disposed at intervals along the width direction of the casing 11, or there are support bars 12 disposed along the length direction of the casing 11 and support bars 12 disposed along the width direction of the casing 11 in the plurality of support bars 12, so as to support different positions of the fuel cell stack, and further support the fuel cell stack 2 better.

The plurality of brackets 13 are disposed on the housing 11 at intervals, and each of the plurality of brackets 13 is used to define a horizontal position of the fuel cell stack 2, that is, the plurality of brackets 13 can define a position of the fuel cell stack in a horizontal direction, thereby preventing the fuel cell stack 2 from moving in the horizontal direction. The support 13 can be in contact with the side wall of the fuel cell stack 2 when the fuel cell stack 2 is located in the closed cavity.

In the fixed knot structure 1 that this embodiment provided, set up a plurality of support bars 12 in casing 11 for support bar 12 can support the preceding part of fuel cell pile 2, mid portion and rear portion, and then make when the length of fuel cell pile 2 is longer, support bar 12 also can effectual support fuel cell pile 2, and prevent that main part dislocation, the middle part condition of collapsing waist appear when complicated driving operating mode in fuel cell pile 2, thereby guaranteed the safety in utilization and the stability of fuel cell pile.

Alternatively, as shown in fig. 2, the plurality of supporting bars 12 includes two supporting bar groups, the number of the supporting bars 12 in the two supporting bar groups is the same, and the two supporting bar groups are symmetrically arranged. By this arrangement of the support bars 12, the uniformity of the supporting force of the fuel cell stack 2 can be improved. It should be noted that fig. 2 is a schematic view showing that each support bar group includes two support bars 12, and the two support bar groups are arranged in sequence and symmetrically along the width direction of the housing.

Further, the number of the supporting bars 12 in each supporting bar group is even, and the number of the supporting bars 12 in each supporting bar group may be 2, 4, 8, 10, etc. by way of example.

In this embodiment, the plurality of supporting bars 12 may include a plurality of transverse supporting bars and a plurality of longitudinal supporting bars, wherein the transverse supporting bars are located between two adjacent longitudinal supporting bars, or the longitudinal supporting bars are located between two adjacent transverse supporting bars, that is, the transverse supporting bars and the longitudinal supporting bars are arranged in a cross shape, so as to further improve the supporting effect of the supporting bars 12 on the fuel cell stack 2. Optionally, the distance between two adjacent transverse supporting bars and the distance between two adjacent longitudinal supporting bars can be determined according to actual conditions.

Alternatively, the cross-sectional shape of the support bar 12 along its length direction may be trapezoidal, rectangular, circular, polygonal, or the like. When the support bars 12 have a trapezoidal cross-sectional shape, as shown in fig. 5, the support bars 12 have a smaller surface for supporting the fuel cell stack 2 than the surface thereof in contact with the casing 11, which improves the stability of the support bars 12. It should be noted that the material of the supporting bar 12 in this embodiment is an insulating material to prevent the supporting bar 12 from conducting electricity, and for example, the material of the supporting bar 12 may be an insulating material such as a non-metallic material with high strength, a composite material, and the like.

Alternatively, as shown in fig. 3, the housing 11 includes a bottom case 111 and an upper cover 112 that are hermetically connected, the bottom case 111 and the upper cover 112 can form a closed cavity, the supporting bars 12 and the brackets 13 are fixed on the bottom case 111, and in particular, the supporting bars 12 and the brackets 13 are fixed on a bottom plate of the bottom case 111.

Further, as shown in fig. 8, the bottom case 111 has a plurality of first protrusions 113 thereon, the plurality of first protrusions 113 are disposed at intervals, the plurality of first protrusions 113 correspond to the plurality of supporting bars 12 one by one, and the supporting bars 12 are fixed on the corresponding first protrusions 113. Illustratively, as shown in fig. 10, the bottom surface of the supporting bar 12 has a plurality of first mounting holes 121, the first protrusions 113 also have threaded holes 115 (shown in fig. 5), and the supporting bar 12 and the first protrusions 113 are fixedly connected by screws passing through the first mounting holes 121 and the threaded holes 115.

Further, as shown in fig. 8, the bottom case 111 further has a plurality of second protrusions 114, the plurality of second protrusions 114 correspond to the plurality of brackets 13 one to one, and the brackets 13 are fixed on the corresponding second protrusions 114. Alternatively, the second protrusion 114 and the bracket 13 may be fixedly connected by screws.

In this embodiment, the bottom case 111 may be in a cubic shape, and four second protrusions 114 may be disposed on the bottom case 111, the four second protrusions 114 are respectively located at four corners of the bottom case 111, and correspondingly, as shown in fig. 3, the fixing structure 1 may include four brackets 13, and the four brackets 13 are respectively fixed on the four second protrusions 114.

As shown in fig. 9, each of the brackets 13 includes a bottom plate 131 and a vertical plate 132 which are vertically connected, the bottom plate 131 is fixed to the housing 11, and the vertical plate 132 can contact with the side wall of the fuel cell stack 2. Further, a second mounting hole 134 is provided on each of the bottom plate 131 and the vertical plate 132, and the second mounting hole 134 is used for connecting the bottom plate 131 with the second protrusion 114 and for connecting the vertical plate 132 with the end plate 21 of the fuel cell stack 2.

Further, the bracket 13 may further include a reinforcing plate 133, and the reinforcing plate 133 is connected to both the bottom plate 131 and the vertical plate 132 and is used to increase the connection strength between the bottom plate 131 and the vertical plate 132.

The present embodiment further provides a fuel cell stack apparatus, as shown in fig. 3, which includes a fuel cell stack 2 and the fixing structure 1. The end plate 21 of the fuel cell stack 2 is provided with a plurality of grooves 211, the grooves 211 correspond to the support bars 12 one by one, and the support bars 12 can be clamped into the corresponding grooves 211.

Further, the sum of the lengths of the plurality of grooves 211 in the first direction is less than or equal to 1/3 of the length of the end plate 21 in the first direction, so that the strength of the end plate 21 is less affected by the grooves 211, and the function of the end plate 21 is not damaged. The first direction is the width direction of the fuel cell stack 2 or the case 11.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A fixing structure for fixing a fuel cell stack (2) in a fuel cell stack apparatus, comprising:

the fuel cell stack comprises a shell (11), wherein a closed cavity is arranged in the shell (11) and is used for accommodating the fuel cell stack (2);

a plurality of support bars (12), a plurality of the support bars (12) are arranged at the bottom of the shell (11) at intervals, and the support bars (12) are used for supporting the fuel cell stack (2);

a plurality of brackets (13), a plurality of the brackets (13) are all fixed on the shell (11), the brackets (13) are used for limiting the horizontal position of the fuel cell stack (2), and when the fuel cell stack (2) is positioned in the closed cavity, the brackets (13) are in contact with the side wall of the fuel cell stack (2).

2. The fixing structure according to claim 1, wherein the plurality of support bars (12) comprises two support bar groups, the number of the support bars (12) in the two support bar groups is the same, and the two support bar groups are symmetrically arranged.

3. The arrangement, as set forth in claim 2, characterized in that the number of support bars (12) in each of said groups is an even number.

4. The fixing structure according to claim 1, characterized in that the plurality of support bars (12) comprises a plurality of transverse support bars and a plurality of longitudinal support bars, the transverse support bars being located between two adjacent longitudinal support bars, or the longitudinal support bars being located between two adjacent transverse support bars.

5. A fixation structure as claimed in any one of claims 1 to 4, characterized in that the cross-sectional shape of the support strip (12) is trapezoidal, rectangular, circular or polygonal.

6. A fixing structure as claimed in any one of claims 1 to 4, characterized in that said housing (11) comprises a bottom shell (111) and an upper cover (112) hermetically connected, said supporting strip (12) and said bracket (13) being fixed to said bottom shell (111).

7. The fixing structure of claim 6, wherein the bottom case (111) has a plurality of first protrusions (113), the plurality of first protrusions (113) correspond to the plurality of supporting bars (12) one by one, and the supporting bars (12) are fixed on the corresponding first protrusions (113).

8. The fixed structure of claim 7, wherein said bottom shell (111) further has a plurality of second protrusions (114), said plurality of second protrusions (114) correspond to said plurality of brackets (13) one by one, and said brackets (13) are fixed on said second protrusions (114) corresponding thereto.

9. The fixing structure according to any one of claims 1 to 4, wherein the bracket (13) comprises a bottom plate (131) and a vertical plate (132) which are vertically connected, the bottom plate (131) is fixed on the housing (11), and the vertical plate (132) can contact with the side wall of the fuel cell stack (2).

10. A fuel cell stack device, comprising a fuel cell stack (2) and the fixing structure of any one of claims 1 to 9, wherein a plurality of grooves (211) are formed on an end plate (21) of the fuel cell stack (2), the plurality of grooves (211) correspond to a plurality of support bars (12) one by one, and the support bars (12) can be clamped into the corresponding grooves (211).