CN211017261U

CN211017261U - Stacking jig for hydrogen fuel cell

Info

Publication number: CN211017261U
Application number: CN201921942230.4U
Authority: CN
Inventors: 朱伟; 王磊
Original assignee: Shenzhen Second Intelligent Equipment Co Ltd
Current assignee: Shenzhen Second Intelligent Equipment Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-14
Anticipated expiration: 2029-11-11

Abstract

The utility model provides a hydrogen fuel cell's tool of piling, it includes bearing board, lower end plate, upper end plate, a plurality of location stand, positioning frame and goes up the moulding-die. A plurality of location stands surround the lower end plate setting, form the accommodation space who holds the battery pile, and the bottom mounting of location stand is on the bearing board, top and location frame fixed connection. The lower end plate is positioned at the bottom of the accommodating space, and the upper end plate is positioned at the top of the accommodating space and used for compressing the cell stack; the upper pressing die is positioned above the upper end plate and used for pressing the cell stack. The utility model discloses a tool is piled in dress adopts upper end plate, lower end plate, location stand to constitute the accommodation space that holds the battery and pile jointly, can pile up the battery in this accommodation space, with the top pressure mould pressing on the upper end plate to exert appointed pressure, can accomplish the operation of piling up of battery pile. It can be seen that the utility model discloses a hydrogen fuel cell's the operation of piling provides a special tool, is favorable to improving hydrogen fuel cell's the efficiency of assembling.

Description

Stacking jig for hydrogen fuel cell

Technical Field

The utility model belongs to hydrogen fuel cell production facility field especially relates to a hydrogen fuel cell's tool of piling.

Background

The hydrogen fuel cell is a new power supply with development prospect, and uses hydrogen as a negative electrode and oxygen in air as a positive electrode. It is mainly different from a general battery in that an active material of the general battery is previously put inside the battery, and thus the battery capacity depends on the amount of the active material stored; the active materials (fuel and oxidant) of a hydrogen fuel cell are continuously supplied while reacting, and therefore, such a cell is actually only an energy conversion device. The battery has the advantages of high conversion efficiency, large capacity, high specific energy, wide power range, no need of charging and the like.

Structurally, the hydrogen fuel cell has a plurality of cells, each cell includes a bipolar plate, a membrane electrode assembly, a gas diffusion channel, and a sealing ring, and the plurality of cells are stacked and pressed together when the hydrogen fuel cell is assembled. At present, a stacking machine jig special for a hydrogen fuel cell is not provided, and in order to improve the assembling efficiency of the hydrogen fuel cell, a stacking machine jig special for the hydrogen fuel cell is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a hydrogen fuel cell's equipment tool is piled is provided, aim at improving hydrogen fuel cell's equipment efficiency.

The utility model is realized in such a way, a stacking jig for hydrogen fuel cells, which comprises a bearing plate, a lower end plate, an upper end plate, a plurality of positioning upright posts, a positioning frame and an upper pressing die; the positioning upright columns are arranged around the lower end plate to form an accommodating space for accommodating the cell stack; the bottom end of the positioning upright post is fixed on the bearing plate, the top end of the positioning upright post is fixedly connected with the positioning frame, the lower end plate is positioned at the bottom of the accommodating space, and the upper end plate is positioned at the top of the accommodating space and used for compressing the cell stack; the upper pressing die is positioned above the upper end plate and used for pressing the cell stack.

Furthermore, a flow channel is formed in the upper end plate and is aligned with a flow channel inlet in the battery.

Furthermore, the upper pressing die is provided with a vent hole, and the vent hole is aligned with the flow channel on the upper end plate.

Further, the top of location stand with positioning frame passes through leveling screw fixed connection, the axial direction perpendicular to of leveling screw accommodation space's direction of height.

Further, the stacking jig further comprises a conductive vertical rod, the upper end plate and the lower end plate are both conductive and are fixedly connected through the conductive vertical rods.

Further, the stacking jig further comprises a fixing nut, the top end of the conductive vertical rod penetrates out of the upper end plate, and the fixing nut is in threaded connection with the top end of the conductive vertical rod.

Furthermore, a moving block is mounted on the top surface of the bearing plate corresponding to the bottom end of the positioning upright post, an open slot is formed in the moving block, the bottom end of the positioning upright post is embedded in the open slot, a strip-shaped hole is further formed in the side edge of the open slot of the moving block, a mounting bolt penetrates through the strip-shaped hole, and the moving block is mounted and fixed on the bearing plate through the mounting bolt; and loosening the mounting bolts, enabling the moving block and the positioning upright post to move relative to the bearing plate in a direction close to or far away from the accommodating space, screwing the mounting bolts, and fixedly mounting the moving block and the positioning solid on the bearing plate.

Furthermore, the lower end plate and the upper end plate correspond to the position of the positioning upright post is provided with a sliding groove, and one side surface of the positioning upright post is embedded into the sliding groove.

Further, the accommodating space is rectangular.

Furthermore, the positioning columns are arranged on four sides of the accommodating space.

Compared with the prior art, the utility model, beneficial effect lies in:

the utility model discloses a tool is piled in dress adopts upper end plate, lower end plate, location stand to constitute the accommodation space that holds the battery and pile jointly, can pile up the battery in this accommodation space, with the top pressure mould pressing on the upper end plate to exert appointed pressure, can accomplish the operation of piling up of battery pile. It can be seen that the utility model discloses a hydrogen fuel cell's the operation of piling provides a special tool, is favorable to improving hydrogen fuel cell's the efficiency of assembling.

Drawings

Fig. 1 is a schematic perspective view of a stacking jig for a hydrogen fuel cell according to an embodiment of the present invention;

fig. 2 is an exploded view of the stacking jig of the hydrogen fuel cell shown in fig. 1;

FIG. 3 is an exploded view of a part of the stack fixture of the hydrogen fuel cell shown in FIG. 1;

fig. 4 is a schematic view of the battery stack after being loaded into the stacking jig of the present embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

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; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; 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.

Referring to fig. 1 and 2, a stack fixture for hydrogen fuel cells according to a preferred embodiment of the present invention is shown, which includes a supporting plate 1, a lower end plate 2, an upper end plate 3, a plurality of positioning columns 4, a positioning frame 5 and an upper pressing mold 6.

A plurality of positioning posts 4 are arranged around the lower end plate 2 to form a containing space 100 for containing the cell stack. The bottom end of the positioning upright post 4 is fixed on the bearing plate 1, the top end is fixedly connected with the positioning frame 5, the lower end plate 2 is positioned at the bottom of the accommodating space 100, and the upper end plate 3 is positioned at the top of the accommodating space 100 and used for compressing the cell stack. In this embodiment, the accommodating space 100 is rectangular, and the positioning pillars 4 are disposed on four sides of the accommodating space 100, wherein two positioning pillars 4 are disposed on two ends of the accommodating space, and two positioning pillars 4 are disposed on two sides of the accommodating space.

An upper press die 6 is located above the upper end plate 3 for pressing the stack downward. The upper die 6 is provided with a vent hole 61, the vent hole 61 is aligned with the flow channel on the upper end plate 3, the upper end plate 3 is provided with a flow channel 31, and the flow channel 31 is aligned with the flow channel inlet in the battery. In practical application, three flow channels 31 are formed in the upper end plate 3, and the three flow channels 31 correspond to inlets of a hydrogen channel, an air channel and a cooling channel of the battery respectively. A gas (e.g., nitrogen or air) is introduced into the upper die 6 at a predetermined pressure, and the gas can enter the flow channel 31 of the upper end plate 3 through the vent 61 in the upper die 6 and enter the flow channel of the battery through the flow channel 31 of the upper end plate 3, and the pressure is maintained for a predetermined time, and the airtightness of the battery product can be detected by observing the pressure change of the barometer during the time. In the detection process, gas can be introduced into different vent holes 61 one by one so as to test the air tightness of a certain flow channel of the battery product.

The top end of the positioning column 4 is fixedly connected with the positioning frame 5 through a leveling screw 7, and the axial direction of the leveling screw 7 is perpendicular to the height direction of the accommodating space 100.

Further, the stacking jig further comprises a conductive upright rod 8, a fixing nut 9 and a moving block 10. Both the upper end plate 3 and the lower end plate 2 have conductivity, and are fixedly connected through a plurality of conductive vertical rods 8. The top end of the conductive vertical rod 8 penetrates through the upper end plate 3, and the fixing nut 9 is in threaded connection with the top end of the conductive vertical rod 8. After the stacking is finished, the positive electrode and the negative electrode of the battery are respectively connected with the upper end plate 3 and the lower end plate 2, and current is introduced into the conductive upright rod 8, so that the voltage and current conditions of the battery product can be detected.

Referring to fig. 3, the moving block 10 is mounted on the top surface of the supporting plate 1 corresponding to the bottom end of the positioning column 4. An open groove 101 is formed in the moving block 10, and the bottom end of the positioning upright post 4 is embedded in the open groove 101. The side edge of the opening groove 101 of the moving block 10 is further provided with a strip-shaped hole 102, a mounting bolt 20 penetrates through the strip-shaped hole 102, and the moving block 10 is mounted and fixed on the supporting plate 1 through the mounting bolt 20.

The position of the lower end plate 2 corresponding to the positioning upright post 4 is provided with a sliding groove 21, the position of the upper end plate 3 corresponding to the positioning upright post 4 is provided with a sliding groove 32, and one side surface of the positioning upright post 4 is embedded into the sliding groove 21 and the sliding groove 32. Loosening the mounting bolts 20, pushing the moving block 10 and the positioning upright post 4, both of which can move in the direction approaching to or departing from the accommodating space 100 relative to the supporting plate 4; the mounting bolts 20 are screwed down, and the moving block 10 and the positioning solid 4 are all fixedly mounted on the bearing plate 1. The position of the moving block 10 and the positioning upright post 4 can be adjusted to enable the stacking jig to be suitable for battery stacks of different sizes.

The processes of hydrogen cell stacking, air tightness detection and electric conduction detection by applying the embodiment are as follows:

the whole stacking jig is inclined by 45 degrees, manually placed into a battery stack, then the upper end plate 3 is placed, the fixing screw cap 9 is screwed on for primary fixing, the leveling screw 7 is adjusted to enable the battery stack to be vertical, the upper pressing die 6 presses down the specified pressure to compact the battery stack, and then the fixing screw cap 9 is fastened. And then, introducing detection gas into the upper pressing die 6 to detect the air tightness of the battery product, and finally, connecting a power supply with the conductive upright rod 8 to detect the voltage and the current of the battery product.

Referring to fig. 4, the stack loading jig of the present embodiment uses the upper end plate 3, the lower end plate 2, and the positioning column 4 to form the accommodating space 100 for accommodating the cell stack 200, so that the cell stack 200 can be stacked in the accommodating space 100, the upper pressing mold 6 is pressed on the upper end plate 3, and a predetermined pressure is applied, thereby completing the stack loading operation of the cell stack 200.

Therefore, the embodiment provides a special jig for the stacking operation of the hydrogen fuel cell, and is beneficial to improving the assembling efficiency of the hydrogen fuel cell.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The stacking jig for the hydrogen fuel cell is characterized by comprising a bearing plate, a lower end plate, an upper end plate, a plurality of positioning upright columns, a positioning frame and an upper pressing die; the positioning upright columns are arranged around the lower end plate to form an accommodating space for accommodating the cell stack; the bottom end of the positioning upright post is fixed on the bearing plate, the top end of the positioning upright post is fixedly connected with the positioning frame, the lower end plate is positioned at the bottom of the accommodating space, and the upper end plate is positioned at the top of the accommodating space and used for compressing the cell stack; the upper pressing die is positioned above the upper end plate and used for pressing the cell stack.

2. The stack jig of claim 1, wherein the upper end plate has a flow channel formed therein, and the flow channel is aligned with an inlet of the flow channel in the cell.

3. The stack jig for a hydrogen fuel cell according to claim 2, wherein the upper molding die has vent holes formed therein, the vent holes being aligned with the flow channels of the upper end plate.

4. The stacking jig for hydrogen fuel cells according to claim 1, wherein the top end of the positioning column is fixedly connected to the positioning frame by a leveling screw, and an axial direction of the leveling screw is perpendicular to a height direction of the accommodating space.

5. The stack jig of claim 1, further comprising conductive posts, wherein the upper end plate and the lower end plate are both conductive and are fixedly connected by the conductive posts.

6. The stack jig of claim 5, further comprising a fixing nut, wherein the top end of the conductive vertical rod penetrates through the upper end plate, and the fixing nut is in threaded connection with the top end of the conductive vertical rod.

7. The stacking jig for hydrogen fuel cells according to any one of claims 1 to 6, wherein a moving block is mounted on a position, corresponding to the bottom end of the positioning upright, of the top surface of the supporting plate, an open slot is formed in the moving block, the bottom end of the positioning upright is embedded in the open slot, a strip-shaped hole is further formed in a side edge of the open slot, a mounting bolt penetrates through the strip-shaped hole, and the moving block is mounted and fixed on the supporting plate through the mounting bolt; and loosening the mounting bolts, enabling the moving block and the positioning upright post to move relative to the bearing plate in a direction close to or far away from the accommodating space, screwing the mounting bolts, and fixedly mounting the moving block and the positioning solid on the bearing plate.

8. The stack jig of a hydrogen fuel cell according to claim 7, wherein the lower end plate and the upper end plate are provided with sliding grooves at positions corresponding to the positioning posts, and one side surface of the positioning post is embedded in the sliding groove.

9. The stacking jig for hydrogen fuel cells according to any one of claims 1 to 6, wherein the accommodating space has a rectangular parallelepiped shape.

10. The stacking jig for hydrogen fuel cells according to any one of claims 1 to 6, wherein the positioning posts are disposed on four sides of the accommodating space.