Fuel cell stack packaging structure

Abstract

The utility model discloses a fuel cell stack packaging structure, relates to the technical field of stack packaging, and solves the problems that the stack packaging structure in the prior art is inconvenient to assemble, and the integrity of a single inner core is damaged. The fuel cell stack comprises a fuel cell stack core body, the fuel cell stack core body is arranged on a skeleton frame, a top end plate is arranged at one end of the skeleton frame, a push plate structure matched with one end of the fuel cell stack core body is arranged on the top end plate in a sliding manner, and an adjusting ring cover matched with the push plate structure is arranged on the top end plate; a bottom end plate is detachably arranged at the other end of the skeleton frame, and a clamping structure matched with the bottom end plate is arranged on the skeleton frame; and a sealing shell is arranged on the skeleton frame. The top end plate is matched with the bottom end plate, so that the position of the electric pile core body is fixed, and the electric pile core body is quickly assembled through a clamping structure. Furthermore, a push plate mechanism and an adjusting ring cover are arranged on the top end plate, so that the electric pile core body is quickly pressed and fixed, and the operation process is simple. And the integrity of the battery structure is improved by utilizing end face compression.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electric pile packaging, in particular to a fuel cell electric pile packaging structure. BACKGROUND

[0002] The electric pile is the core part of the hydrogen fuel cell power system, is composed of multiple single cells in a series connection mode, is alternately laminated with the bipolar plate and the membrane electrode, the sealing element is embedded between each single cell to form the electric pile core body, and finally the electric pile core body is compressed and packaged by the front end plate and the rear end plate. In the compression and packaging process of the existing electric pile core body, the external frame or the pull rod is relied on for tensioning.

[0003] The utility model discloses a kind of electric pile packaging end plates of hydrogen fuel cell, including first seal plate and second seal plate, the first seal plate bottom both ends are provided with positioning angle plate, the positioning angle plate longitudinal section is L type, two positioning angle plates are oppositely arranged;Several connecting pipes are provided on the first seal plate, the connecting pipe is evenly distributed along the first seal plate inner surface circumferential side;The second seal plate is matched with the first seal plate, second seal plate is opened with counterbore screw hole corresponding the connecting pipe position, inner thread is provided in the connecting pipe, bolt is threaded in the counterbore screw hole and is connected with connecting pipe thread;Cooling liquid passage hole and working gas passage hole are opened in the corresponding position of the first seal plate and the second seal plate.

[0004] In the utility model, the connecting pipe and the bolt are used to connect and tension between the two end plates, the connecting pipe is in the middle position during use, and the connecting pipe needs to penetrate the fuel cell inner core, which damages the integrity of the fuel cell core. At the same time, multiple bolts need to be tightened one by one to realize fastening during the tensioning process, and the fastening process needs to maintain the fastening progress of multiple bolts as consistent as possible, which is troublesome and low in efficiency during assembly process. And the different steps of multiple bolts tightening out of sync can cause end plate deviation and parallelism problem of two end plates. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the above background art, the utility model provides a fuel cell electric pile packaging structure, which solves the problems of inconvenient assembly and damage to the integrity of the single cell core in the prior art.

[0006] The technical scheme of the utility model is as follows: a fuel cell electric pile packaging structure, comprising an electric pile core body, the electric pile core body is arranged on a skeleton frame, one end of the skeleton frame is provided with a top end plate, a push plate structure matched with one end of the electric pile core body is slidably arranged on the top end plate, and an adjusting ring cover matched with the push plate structure is arranged on the top end plate;The other end of the skeleton frame is detachably provided with a bottom end plate, and a clamping structure matched with the bottom end plate is arranged on the skeleton frame;A sealing shell is arranged on the skeleton frame.

[0007] Preferably, the push plate structure comprises a push plate slidingly matched with the skeleton frame, a plurality of slide columns are fixedly arranged on the push plate, a plurality of through holes for the slide columns to pass through are arranged on the top end plate, and guide blocks are arranged at the end portions of the slide columns.

[0008] Preferably, the adjusting ring cover is rotationally matched with the top end plate, and an open slot for accommodating the slide columns and the guide blocks is arranged on the adjusting ring cover, and an inclined slot matched with the guide blocks is arranged on the open slot.

[0009] Preferably, a circular hole is arranged at the center of the top end plate, an inner ring body is arranged at the circular hole, and the adjusting ring cover is rotationally matched with the inner ring body. A sliding sealing ring I matched with the inner wall of the skeleton frame is arranged on the outer side wall of the push plate.

[0010] Preferably, the bottom end plate is slidingly matched with the skeleton frame, and a sliding sealing ring II matched with the skeleton frame is arranged on the outer wall of the bottom end plate.

[0011] Preferably, the clamping structure comprises a plurality of blocking arms hingedly arranged on the skeleton frame, and the blocking arms are matched with the bottom end plate.

[0012] Preferably, the sealing shell comprises a plurality of blocking plates connected to the skeleton frame through bolts, and sealing rings are arranged between the blocking plates and the skeleton frame. A plurality of weight-reducing holes are arranged on the skeleton frame. Air inlet holes are arranged on the bottom end plate and the push plate structure.

[0013] The utility model discloses a kind of battery packaging structures, including skeleton frame, push plate structure, adjusting ring cover, clamping structure and sealing shell, wherein, the push plate structure is matched with the skeleton frame, and the push plate structure is matched with the adjusting ring cover, and the clamping structure is matched with the bottom end plate. The beneficial effects of the utility model are as follows: by setting the skeleton frame, space can be provided for the installation of the electric pile core body; the position of the electric pile core body is fixed by matching the top end plate and the bottom end plate; the electric pile core body is quickly assembled by the clamping structure; the electric pile core body is quickly compressed and fixed by setting the push plate mechanism and the adjusting ring cover on the top end plate; the operation process is simple; the integrity of the battery structure is improved by avoiding the damage of the through compression to the integrity of the electric pile core body; the structure is reliable; the utility model has simple structure, simple assembly process and higher processing efficiency; the reliability of the battery packaging structure is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 It is a packaging structure schematic view under a certain angle of view of the utility model;

[0016] Figure 2This is a schematic diagram of the packaging structure from another perspective of the present invention;

[0017] Figure 3 This is a schematic diagram of the push plate structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the adjusting ring cover of this utility model;

[0019] Figure 5 This is a schematic diagram of the bottom cross-sectional structure of this utility model;

[0020] In the diagram: 1: fuel cell core, 2: skeleton frame, 3: top end plate, 4: push plate structure, 5: adjustment ring cover, 6: bottom end plate, 7: locking structure, 8: sealing shell, 41: push plate, 42: sliding column, 43: guide block, 51: opening slot, 52: inclined slot, 31: inner ring body, 71: stop arm, 21: weight reduction hole, 9: air inlet, 11: electrode. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1 , 2 As shown in Embodiment 1, a fuel cell stack packaging structure includes a stack core 1, which adopts a conventional fuel cell core. The stack core 1 is mounted on a skeleton frame 2, which provides space for the installation of the stack core. One end of the skeleton frame 2 has a top end plate 3, on which a push plate structure 4 that slidably engages with one end of the stack core 1 is mounted. An adjustment ring cover 5 that engages with the push plate structure 4 is also mounted on the top end plate 3. The other end of the skeleton frame 2 has a detachable bottom end plate 6, on which a locking structure 7 engages with the bottom end plate 6. The locking structure 7 enables quick locking of the bottom end plate position, facilitating rapid assembly. The top and bottom end plates, in conjunction, fix the position of the stack core. Additionally, a sealing shell 8 is provided on the skeleton frame 2 for sealing.

[0023] In the embodiment, when the packaging is performed, first, the adjusting ring cover is rotated to adjust the push plate structure to be away from the bottom end plate, then the bottom end plate is unlocked by the clamping structure and is taken off from the opening of the end of the skeleton frame, then the stack core is loaded into the skeleton frame from the opening of the end of the skeleton frame, the inner end is in contact with the push plate structure, then the bottom end plate is placed into the opening of the end of the skeleton frame and the position of the bottom end plate is locked by the clamping structure. Finally, the adjusting ring cover is rotated to push the push plate structure to tightly press the stack core to achieve the purpose of pressing. In the embodiment, the push plate mechanism and the adjusting ring cover are matched to realize the quick pressing and fixing of the stack core, the operation process is simple, the pressing efficiency is high, and the reliability is strong. At the same time, the end face pressing mode is used to avoid the damage of the penetrating pressing to the integrity of the stack core, improve the integrity of the battery structure, and the structural reliability is strong.

[0024] As a further specific embodiment, the sealing shell 8 comprises a plurality of baffles connected to the skeleton frame by bolts, and a sealing ring is arranged between the baffles and the skeleton frame 2. In the embodiment, the skeleton frame is a cuboid structure, and four baffles are arranged on the four side walls of the skeleton frame. After the stack core is pressed tightly, the baffles are fixed on the skeleton frame by bolts one by one to realize the sealing of the stack core.

[0025] Further, a plurality of weight reduction holes 21 are arranged on the skeleton frame 2 to reduce the weight of the whole skeleton frame structure and reduce the cost. In addition, in order to meet the gas supply of the fuel cell, the bottom end plate 6 and the push plate structure 4 are provided with gas inlet holes 9, which can be connected with the existing gas supply equipment through pipelines to realize the gas supply of the stack core. The utility model has the advantages of simple structure, simple assembly process, higher processing efficiency and stronger reliability of the battery packaging structure.

[0026] In the embodiment 2, on the basis of the embodiment 1, as shown in Figure 3 , 4 The push plate structure 4 comprises a push plate 41 sliding with the skeleton frame 2, a plurality of slide columns 42 are fixedly arranged on the push plate 41, a plurality of through holes are arranged on the top end plate 3 to meet the slide columns 42, and a guide block 43 is arranged at the end of the slide column 42. In the embodiment, four slide columns are arranged on the push plate at equal intervals in the circumferential direction.

[0027] Correspondingly, the adjusting ring cover 5 is rotationally fitted between the top end plate 3, and the adjusting ring cover 5 is provided with an open slot 51 accommodating the slide column 42 and the guide block 43, and the open slot 51 is provided with an inclined slot 52 fitted with the guide block 43. In the embodiment, four pairs of inclined slots are provided on the inner and outer side walls of the open slot, which are respectively fitted with the four guide blocks. The guide block 43 is a cylindrical block vertically arranged at the end of the slide column. When the adjusting ring cover rotates, the inclined slot moves with the adjusting ring cover, and the relative position of the inclined slot and the guide block changes, so that the guide block drives the slide column to move along the axis under the limiting cooperation of the slide column and the through hole connected by the guide block, and then drives the push plate to move axially, so as to achieve the purpose of extruding or moving away from the internal stack core. In the embodiment, the rotatable angle range of the adjusting ring cover is limited to 0~90°, so as to achieve the purpose of quickly moving away and extruding to the position, and improve the efficiency during assembly.

[0028] Further, in the embodiment, a circular hole is provided in the center of the top end plate 3, and an inner ring body 31 is provided at the circular hole. The adjusting ring cover 5 is rotationally fitted with the inner ring body 31. The outer side wall of the push plate 41 is provided with a sliding sealing ring I matched with the inner wall of the skeleton frame 2, so that sealing can be realized after the stack core is extruded to the position, and internal gas leakage during work is avoided.

[0029] In embodiment 3, on the basis of embodiment 2, the bottom end plate 6 is slidably fitted with the skeleton frame 2, and the outer wall of the bottom end plate 6 is provided with a sliding sealing ring II matched with the skeleton frame 2. In the embodiment, after the stack core is loaded into the skeleton frame, the bottom end plate is put into the skeleton frame from the open end of the skeleton frame, so that the sliding sealing ring II of the bottom end plate and the skeleton frame form a seal. The weight-reducing holes on the skeleton frame can realize the balance of internal and external air pressure during loading. Finally, the baffle plate is connected with the skeleton frame to realize sealing. At the same time, the weight-reducing holes are set to avoid the activity range of the push plate and the bottom end plate, so as to avoid affecting the air tightness.

[0030] As shown in Figure 5 The clamping structure 7 includes a plurality of baffle arms 71 hinged on the skeleton frame 2, and the baffle arms 71 are matched with the bottom end plate 6. Specifically, in the embodiment, the open end of the skeleton frame is provided with four recesses, and four baffle arms are respectively hinged in the four recesses. During loading of the stack core, the four baffle arms are rotated and withdrawn into the recesses. After the bottom end plate is put into place, the baffle arms are rotated and the baffle arms are attached to the outer side wall of the bottom end plate, so as to quickly lock the position of the bottom end plate.

[0031] In addition, as a further optional embodiment, a rectangular hole is provided on the skeleton frame and the baffle plate to meet the two electrodes 11 of the stack core. In the embodiment, a pair of rectangular holes are provided, which are respectively provided at the two ends of the stack core. The electrodes are respectively inserted from the rectangular holes at the two ends to realize power output. After assembly is completed, the gap between the electrodes and the rectangular hole is sealed with sealing glue to avoid gas leakage.

[0032] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fuel cell stack packaging structure, comprising a stack core (1), characterized in that: The fuel cell core (1) is mounted on the skeleton frame (2). One end of the skeleton frame (2) is provided with a top end plate (3). A push plate structure (4) that cooperates with one end of the fuel cell core (1) is slidably mounted on the top end plate (3). An adjustment ring cover (5) that cooperates with the push plate structure (4) is mounted on the top end plate (3). A bottom end plate (6) is detachably mounted on the other end of the skeleton frame (2). A locking structure (7) that cooperates with the bottom end plate (6) is mounted on the skeleton frame (2). A sealing shell (8) is mounted on the skeleton frame (2).

2. The fuel cell stack packaging structure according to claim 1, characterized in that: The push plate structure (4) includes a push plate (41) that slides and cooperates with the skeleton frame (2). Several sliding columns (42) are fixedly provided on the push plate (41). Several through holes are provided on the top end plate (3) to allow the sliding columns (42) to pass through. Guide blocks (43) are provided at the ends of the sliding columns (42).

3. The fuel cell stack packaging structure according to claim 2, characterized in that: The adjusting ring cover (5) is rotatably engaged with the top end plate (3), and the adjusting ring cover (5) is provided with an opening groove (51) for accommodating the sliding column (42) and the guide block (43), and the opening groove (51) is provided with an inclined groove (52) that engages with the guide block (43).

4. The fuel cell stack packaging structure according to claim 3, characterized in that: The top end plate (3) has a circular hole in the center, and an inner ring (31) is provided at the circular hole. The adjusting ring cover (5) is rotated and engaged with the inner ring (31).

5. The fuel cell stack packaging structure according to claim 4, characterized in that: The outer wall of the push plate (41) is provided with a sliding sealing ring I that cooperates with the inner wall of the skeleton frame (2).

6. The fuel cell stack packaging structure according to claim 5, characterized in that: The bottom end plate (6) is slidably engaged with the skeleton frame (2), and the outer wall of the bottom end plate (6) is provided with a sliding sealing ring II that engages with the skeleton frame (2).

7. The fuel cell stack packaging structure according to claim 6, characterized in that: The locking structure (7) includes several arm blocks (71) hinged to the skeleton frame (2), and the arm blocks (71) cooperate with the bottom end plate (6).

8. The fuel cell stack packaging structure according to claim 7, characterized in that: The sealing shell (8) includes several baffles that are bolted to the skeleton frame, and a sealing ring is provided between the baffles and the skeleton frame (2).

9. The fuel cell stack packaging structure according to claim 8, characterized in that: The skeletal frame (2) is provided with several weight-reducing holes (21).

10. The fuel cell stack packaging structure according to any one of claims 1 to 9, characterized in that: Both the bottom end plate (6) and the push plate structure (4) are provided with air inlets (9).

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