CN220829992U

CN220829992U - Pile fixing structure

Info

Publication number: CN220829992U
Application number: CN202322481384.0U
Authority: CN
Inventors: 魏辉; 杨贝贝; 赵武廷; 李正冉
Original assignee: Weichai Balade Hydrogen Technology Co ltd
Current assignee: Weichai Balade Hydrogen Technology Co ltd
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2024-04-23
Anticipated expiration: 2033-09-13

Abstract

The utility model belongs to the technical field of fuel cells and discloses a pile fixing structure which comprises a fixing frame, end plates, an elastic component and a fixing piece, wherein the fixing frame comprises a frame body and a guide shaft extending on the frame body, the frame body is fixed on a cell box body, and the guide shaft extends into the cell box body; the end plate is fixed on one side of the galvanic pile facing the fixed frame, a guide groove is formed in the end plate, and the guide shaft is correspondingly inserted into the guide groove and can adjust the insertion depth relative to the guide groove so as to adjust the distance between the end plate and the fixed frame; the elastic component comprises an elastic piece and a pressing plate, the pressing plate is positioned between the fixing frame and the end plate, one end of the elastic piece is abutted against the pressing plate, and the other end of the elastic piece is abutted against the end plate; the fixing piece is used for fixing the fixing frame and the pressing plate. The pile fixing structure provided by the utility model can effectively limit the movement freedom degree of the pile in the battery box body except the application direction of the packaging force, realize the reliable fixing of the pile and further ensure the uniformity and reliability of the packaging force applied to the pile.

Description

Pile fixing structure

Technical Field

The utility model relates to the technical field of fuel cells, in particular to a pile fixing structure.

Background

A fuel cell stack is a high-efficiency energy conversion power generation device that directly converts chemical energy in fuel and oxidant into electrical energy in an electrochemical reaction. The stack is composed of several tens of fuel cell repeating units, several hundreds of fuel cell repeating units, stacked together.

The stack is typically mounted into the cell housing by applying a stable sealing force through disc springs, disc spring caps, etc., in cooperation with the housing and end plates. Specifically, the direction of the application of the package force of the stack is generally the stacking direction of the plurality of fuel cell repeating units in the stack, and is also the expansion and contraction direction of the disc springs, in which the stack is allowed to have a degree of freedom of movement, but the stack movement is restricted in other directions. The current pile structure lacks movement constraint in other directions, which causes the pile in the battery box body to deviate when receiving forces from other directions outside, thereby affecting the reliable fixation of the pile and being unfavorable for the uniformity and reliability of the application of the disc spring packaging force.

Disclosure of utility model

The utility model aims to provide a pile fixing structure which can effectively limit the freedom degree of movement of a pile in a battery box body except for the application direction of packaging force, realize reliable fixing of the pile and further ensure the uniformity and reliability of the packaging force applied to the pile.

To achieve the purpose, the utility model adopts the following technical scheme:

a pile fixed knot constructs for fixed battery box and pile, the pile is located in the battery box, pile fixed knot constructs includes:

The fixing frame comprises a frame body and a guide shaft which is arranged on the frame body in an extending mode, the frame body is fixed on the battery box body, and the guide shaft extends into the battery box body;

the end plate is fixed on one side of the galvanic pile facing the fixed frame, a guide groove is formed in the end plate, and the guide shaft is telescopically inserted into the guide groove;

the elastic component comprises an elastic piece and a pressing plate, the pressing plate is positioned between the fixing frame and the end plate, one end of the elastic piece is abutted against the pressing plate, and the other end of the elastic piece is abutted against the end plate;

the fixing piece is used for fixing the fixing frame and the pressing plate.

Preferably, the end plate protrudes towards one side of the fixing frame and is provided with a protruding shaft, the guide groove is formed in the protruding shaft, the elastic piece is sleeved on the protruding shaft, the pressing plate is provided with a first perforation, and the pressing plate is sleeved on the protruding shaft through the first perforation.

Preferably, the end plate is provided with a first groove towards one side of the pressing plate, the pressing plate is provided with a second groove towards one side of the end plate, one end of the elastic piece is abutted in the first groove, and the other end of the elastic piece is abutted in the second groove.

Preferably, the elastic member is provided as a disc spring.

Preferably, the guide shaft, the protruding shaft, and the elastic member are provided in plural numbers in a uniform and corresponding manner.

Preferably, the fixing piece comprises a double-end stud, the frame body is provided with a first screw hole, the pressing plate is provided with a second screw hole, one end of the double-end stud is in threaded connection with the first screw hole, and the other end of the double-end stud is in threaded connection with the second screw hole.

Preferably, a sinking groove is formed in the outer side of the battery box body, a second through hole is formed in the bottom of the sinking groove, the frame body is fixedly arranged in the sinking groove, and the guide shaft penetrates through the second through hole to extend into the battery box body.

Preferably, the fixing piece comprises a bolt, a third through hole is formed in the frame body, a fourth through hole is formed in the bottom of the sinking groove, a third screw hole is formed in the pressing plate, and the bolt penetrates through the third through hole and is in threaded connection with the third screw hole.

Preferably, the battery box further comprises an outer cover plate, wherein the outer cover plate is fixed on the battery box body through a connecting piece and is abutted to one side, away from the end plate, of the frame body.

Preferably, the connecting piece is set as a screw, a fifth through hole is formed in the outer cover plate, a fourth screw hole is formed in the battery box body, and the screw penetrates through the fifth through hole and is in threaded connection with the fourth screw hole.

The beneficial effects are that:

According to the pile fixing structure provided by the utility model, one end of the elastic piece is abutted against the pressing plate, the other end of the elastic piece is abutted against the end plate, the elastic piece applies packaging force to the pile through the end plate, the guide shaft of the fixing frame extends into the battery box body and is correspondingly inserted into the guide groove on the end plate, and the guide shaft and the guide groove are in slidable insertion fit, so that the freedom degree of movement of the pile in the insertion direction of the guide shaft is provided, the movement constraint of the pile in other directions is also provided, the movement freedom degree of the pile in the battery box body beyond the packaging force application direction is effectively limited, the reliable fixing of the pile is realized, and the uniformity and the reliability of the packaging force applied to the pile are further ensured.

Drawings

FIG. 1 is a schematic view of a cell housing and a cell stack under a view angle using a cell stack fixing structure according to the present utility model;

FIG. 2 is a schematic diagram of a cell case and a cell stack fixed in another view angle by using the cell stack fixing structure provided by the utility model;

fig. 3 is an exploded schematic view of a pile fixing structure and a pile part provided by the utility model.

In the figure:

1. a fixing frame; 11. a frame body; 111. a first screw hole; 112. a third perforation; 12. a guide shaft;

2. An end plate; 21. a guide groove; 22. a protruding shaft; 23. a first groove;

3. An elastic component; 31. an elastic member; 32. a pressing plate; 321. a first perforation; 322. a second groove; 323. a second screw hole; 324. a third screw hole;

41. A double-ended stud; 42. a bolt;

5. an outer cover plate; 51. a screw;

61. A battery case; 611. sinking grooves; 612. a second perforation; 613. a fourth perforation; 62. and (5) pile.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The present embodiment provides a pile fixing structure for fixing a cell box 61 and a pile 62, and referring to fig. 1 to 3, the pile 62 is disposed in the cell box 61. The pile fixing structure comprises a fixing frame 1, an end plate 2, an elastic component 3 and a fixing piece, wherein the fixing frame 1 comprises a frame body 11 and a guide shaft 12 which is arranged on the frame body 11 in an extending mode, the frame body 11 is fixed on a battery box body 61, and the guide shaft 12 extends into the battery box body 61; the end plate 2 is fixed on one side of the galvanic pile 62 facing the fixed frame 1, a guide groove 21 is formed in the end plate 2, and the guide shaft 12 is telescopically inserted into the guide groove 21; the elastic component 3 comprises an elastic piece 31 and a pressing plate 32, the pressing plate 32 is positioned between the fixed frame 1 and the end plate 2, one end of the elastic piece 31 is abutted against the pressing plate 32, and the other end is abutted against the end plate 2; the fixing member is used for fixing the fixing frame 1 and the pressing plate 32.

In this embodiment, one end of the elastic member 31 abuts against the pressing plate 32, the other end abuts against the end plate 2, the elastic member 31 applies a packaging force to the electric pile 62 through the end plate 2, the guide shaft 12 of the fixing frame 1 extends into the battery box 61 and is correspondingly inserted into the guide groove 21 on the end plate 2, and the guide shaft 12 and the guide groove 21 are in slidable insertion fit, so that not only is the freedom of movement of the electric pile 62 in the insertion direction of the guide shaft 12 provided, but also the movement constraint of the electric pile 62 in other directions is provided, the freedom of movement of the electric pile 62 in the battery box 61 beyond the application direction of the packaging force is effectively limited, the reliable fixing of the electric pile 62 is realized, and the uniformity and the reliability of the packaging force applied to the electric pile 62 are further ensured.

Further, the guide shaft 12 is telescopically inserted into the guide groove 21, that is, the insertion depth of the guide shaft 12 relative to the guide groove 21 can be adjusted to adjust the distance between the end plate 2 and the fixing frame 1, so that the guide shaft can be adapted to the installation of the electric pile 62 with different sizes, the assembly is convenient, and the use compatibility is further ensured.

In this embodiment, the protruding shaft 22 is protruding towards one side of the fixing frame 1 from the end plate 2, the guide slot 21 is disposed on the protruding shaft 22, the elastic member 31 is sleeved on the protruding shaft 22, the pressing plate 32 is provided with a first through hole 321, and the pressing plate 32 is sleeved on the protruding shaft 22 through the first through hole 321. By the arrangement, the movement constraint can be provided for the pressing plate 32 and the elastic piece 31, and the pressing plate 32 and the elastic piece 31 are prevented from moving beyond the inserting direction of the guide shaft 12. Further ensuring the reliability and stability of the arrangement of the elastic components 3 and further ensuring that the stack 62 can receive uniform and stable packaging force.

Specifically, the fixing frame 1 receives the gravity of the electric pile 62 and the supporting force of the battery box 61 on the battery box 61, and the supporting force of the battery box 61 on the fixing frame 1 can make the fixing frame 1 generate a couple, so that the integral rigidity of the fixing structure is affected. Therefore, in this embodiment, the fixing member is provided to fix the frame 11 and the pressing plate 32, the protruding shaft 22, the guide shaft 12, the frame 11 and the fixing member are cooperatively matched, so that the overall rigidity of the fixing structure can be further increased, the deformation of the fixing frame 1 is reduced, and the supporting rigidity and the vibration mode of the fixing frame 1 are ensured.

Further, the end plate 2 is provided with a first groove 23 facing the pressing plate 32, the pressing plate 32 is provided with a second groove 322 facing the end plate 2, one end of the elastic member 31 is abutted in the first groove 23, and the other end of the elastic member 31 is abutted in the second groove 322. The corresponding arrangement of the first groove 23 and the second groove 322 provides a reliable accommodating space for the two ends of the elastic piece 31, further ensures the reliable installation of the elastic piece 31 and avoids the accidental falling of the elastic piece 31.

Further, the guide shaft 12, the protruding shaft 22, and the elastic member 31 are provided in plural numbers in a uniform and corresponding manner. Specifically, each guide shaft 12 is correspondingly inserted into the guide groove 21 on the corresponding protruding shaft 22, and each elastic member 31 is sleeved on the corresponding protruding shaft 22. The pressing plate 32 is provided with a plurality of first perforations 321 corresponding to the convex shafts 22 one by one, and the pressing plate 32 is sleeved on the convex shafts 22 through the plurality of first perforations 321.

In the present embodiment, the elastic member 31 is provided as a disc spring. The elastic member 31 may be other elastic members besides the disc spring, and is not limited thereto.

Specifically, the fixing member includes a stud 41, a first screw hole 111 is formed in the frame 11, a second screw hole 323 is formed in the pressing plate 32, one end of the stud 41 is screwed with the first screw hole 111, and the other end is screwed with the second screw hole 323. Specifically, after the adjustment of the space between the pressing plate 32 and the end plate 2 is completed, the stud 41 is installed, and both ends of the stud 41 are correspondingly screwed with the first screw hole 111 and the second screw hole 323, respectively, so that the reliable fixation between the frame 11 and the pressing plate 32 is realized.

Optionally, the number of the studs 41, the first screw holes 111 and the second screw holes 323 can be adaptively adjusted according to practical use requirements, and is not limited herein.

Further, a sinking groove 611 is formed on the outer side of the battery box 61, a second perforation 612 is formed at the bottom of the sinking groove 611, the frame 11 is fixedly arranged in the sinking groove 611, and the guide shaft 12 penetrates through the second perforation 612 to extend into the battery box 61. Specifically, when the frame 11 is placed in the sink 611, the outer end surface of the frame 11 is disposed flush with the surface of the corresponding side of the battery case 61.

In the present embodiment, the sinking groove 611 is formed on the outer side of the battery case 61, that is, the frame 11 is fixed on the outer side of the battery case 61, and the guide shaft 12 penetrates through the second through hole 612 to extend from the battery case 61 into the battery case 61. The frame 11 is arranged outside the battery box 61, so that the reserved installation and operation space is not needed to be provided inside the battery box 61, the usable space of the battery box 61 is increased, and the space utilization rate of the battery box 61 is further increased.

Further, the fixing piece further comprises a bolt 42, the frame 11 is provided with a third through hole 112, the bottom of the sinking groove 611 is provided with a fourth through hole 613, the pressing plate 32 is provided with a third screw hole 324, and the bolt 42 penetrates through the third through hole 112, the fourth through hole 613 and the third screw hole 324. The bolts 42 are provided to further fit the stud 41, thereby tightening the frame 11 and the platen 32.

Optionally, the number of the bolts 42, the third through holes 112, the fourth through holes 613, and the third screw holes 324 may be adaptively adjusted according to practical requirements, which is not limited herein.

In this embodiment, the pile fixing structure further includes an outer cover plate 5, and the outer cover plate 5 is fixed on the battery case 61 through a connecting piece and abuts against a side of the frame 11 away from the end plate 2. Through setting up outer apron 5, outer apron 5 can effectively be covered and locate on the support body 11 to carry out reliable effectual protection to support body 11 and inside thereof.

Specifically, the connecting piece is set as a screw 51, the outer cover plate 5 is provided with a fifth through hole 52, the battery box 61 is provided with a fourth screw hole 614, and the screw 51 penetrates through the fifth through hole 52 to be in screwed connection with the fourth screw hole 614. The connection members are provided as screws 51, which are convenient to detach and ensure reliable fixation between the outer cover 5 and the battery case 61.

Optionally, the number of the screws 51, the fifth through holes 52, and the fourth screw holes 614 may be adaptively adjusted according to practical use requirements, which is not limited herein.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A pile fixing structure for fixing a cell box (61) and a pile (62), the pile (62) being provided in the cell box (61), characterized in that the pile fixing structure comprises:

The fixing frame (1) comprises a frame body (11) and a guide shaft (12) which is arranged on the frame body (11) in an extending mode, wherein the frame body (11) is fixed on the battery box body (61), and the guide shaft (12) extends into the battery box body (61);

The end plate (2) is fixed on one side of the galvanic pile (62) facing the fixed frame (1), a guide groove (21) is formed in the end plate (2), and the guide shaft (12) is telescopically inserted into the guide groove (21);

the elastic component (3) comprises an elastic piece (31) and a pressing plate (32), wherein the pressing plate (32) is positioned between the fixing frame (1) and the end plate (2), one end of the elastic piece (31) is abutted against the pressing plate (32), and the other end of the elastic piece is abutted against the end plate (2);

The fixing piece is used for fixing the fixing frame (1) and the pressing plate (32).

2. The pile fixing structure according to claim 1, characterized in that a protruding shaft (22) protrudes from one side of the end plate (2) toward the fixing frame (1), the guide groove (21) is formed in the protruding shaft (22), the elastic piece (31) is sleeved on the protruding shaft (22), the pressing plate (32) is provided with a first through hole (321), and the pressing plate (32) is sleeved on the protruding shaft (22) through the first through hole (321).

3. The pile fixing structure according to claim 1, characterized in that a first groove (23) is formed in a side of the end plate (2) facing the pressing plate (32), a second groove (322) is formed in a side of the pressing plate (32) facing the end plate (2), one end of the elastic member (31) is abutted in the first groove (23), and the other end of the elastic member (31) is abutted in the second groove (322).

4. Pile-up fixing structure according to claim 1, characterised in that the elastic element (31) is provided as a disc spring.

5. The pile-up fixing structure according to claim 2, wherein the guide shaft (12), the protruding shaft (22), and the elastic member (31) are provided in plural in a uniform and corresponding manner.

6. The pile fixing structure according to claim 1, wherein the fixing member comprises a stud (41), the frame body (11) is provided with a first screw hole (111), the pressing plate (32) is provided with a second screw hole (323), one end of the stud (41) is in threaded connection with the first screw hole (111), and the other end of the stud is in threaded connection with the second screw hole (323).

7. The pile fixing structure according to claim 1, characterized in that a sinking groove (611) is formed in the outer side of the battery box body (61), a second through hole (612) is formed in the bottom of the sinking groove (611), the frame body (11) is fixedly arranged in the sinking groove (611), and the guide shaft (12) penetrates through the second through hole (612) to extend into the battery box body (61).

8. The pile fixing structure according to claim 7, characterized in that the fixing member comprises a bolt (42), the frame body (11) is provided with a third through hole (112), the bottom of the sink groove (611) is provided with a fourth through hole (613), the pressing plate (32) is provided with a third screw hole (324), and the bolt (42) penetrates through the third through hole (112), and the fourth through hole (613) is in screwed connection with the third screw hole (324).

9. The pile-up fixing structure according to claim 7, further comprising an outer cover plate (5), wherein the outer cover plate (5) is fixed to the cell case (61) through a connecting member and abuts against a side of the frame body (11) away from the end plate (2).

10. The pile fixing structure according to claim 9, characterized in that the connecting piece is provided as a screw (51), the outer cover plate (5) is provided with a fifth through hole, the cell box body (61) is provided with a fourth screw hole (614), and the screw (51) penetrates through the fifth through hole to be in screwed connection with the fourth screw hole.