CN220106605U

CN220106605U - Stack assist device and stack apparatus for fuel cell

Info

Publication number: CN220106605U
Application number: CN202320949440.6U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Jiangsu Hydrogen Guide Intelligent Equipment Co ltd
Current assignee: Jiangsu Hydrogen Guide Intelligent Equipment Co ltd
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2023-11-28
Anticipated expiration: 2033-04-24

Abstract

The utility model provides a stack assisting apparatus and a stack device of a fuel cell, the stack assisting apparatus of the fuel cell includes: a base; the jacking piece is movably arranged on the base along the first direction; the limiting component is arranged on the jacking piece; the holding tool assembly is detachably arranged on the limiting assembly to receive and fix a galvanic pile of the fuel cell, and at least one part of the limiting assembly and the jacking piece synchronously move to adjust the position of the holding tool assembly in the first direction. According to the stacking auxiliary device for the fuel cell, the holding tool assembly and the limiting assembly which are detachably connected are arranged, so that the holding tool assembly and the stacked electric pile can be synchronously transferred to the next process after the stacking process of the electric pile is completed, the holding tool assembly can fix the stacked electric pile, dislocation during electric pile transfer can be avoided, and the alignment degree of the electric pile can be ensured.

Description

Stack assist device and stack apparatus for fuel cell

Technical Field

The present utility model relates to the field of fuel cell production technology, and more particularly, to a stack auxiliary device of a fuel cell, and a stack apparatus including the stack auxiliary device of the fuel cell.

Background

The fuel cell stack is generally formed by stacking a plurality of membrane electrodes and bipolar plates, and if the membrane electrodes and the bipolar plates are misplaced, the normal operation of the stack is affected. Currently, the stack positioning of the fuel cell stack is mainly performed through external positioning, so that certain requirements are imposed on the appearance characteristics of the stack of the fuel cell stack, and related characteristics are required to be provided for positioning. However, some fuel cell stacks have no relevant features for positioning due to the design requirements of the product itself, so that when the stacked stacks are moved, the sub-components of the stacks may be displaced, and thus the alignment of the stacks cannot be ensured.

Disclosure of Invention

The utility model provides a new technical scheme of a stacking auxiliary device of a fuel cell, which at least can solve the problem that a stacked electric pile in the prior art can be misplaced in the moving process.

The utility model also provides a stacking device of the fuel cell, which comprises the stacking auxiliary device of the fuel cell.

According to a first aspect of the present utility model, there is provided a stack assistance device of a fuel cell, comprising: a base; the jacking piece is movably arranged on the base along the first direction; the limiting component is arranged on the jacking piece; the holding tool assembly is detachably arranged on the limiting assembly to receive and fix a galvanic pile of the fuel cell, and at least one part of the limiting assembly and the jacking piece synchronously move to adjust the position of the holding tool assembly in the first direction.

Optionally, the holding tool assembly includes: the quick-change disc is detachably connected with the limiting assembly, and the first side of the quick-change disc is used for bearing the galvanic pile; the support plate extends along the first direction, and one end of the support plate is connected with the quick-change disc; the two pressing assemblies are respectively arranged on two sides of the supporting plate in the first direction, and the pressing assemblies are movable along the first direction to be matched with the quick change disc to fix the galvanic pile.

Optionally, the pressing assembly includes: the output end of the first cylinder is far away from the quick-change disc and is movable along the first direction; and the pressing piece is arranged at the output end of the first cylinder and moves synchronously with the output end of the first cylinder, and is matched with the supporting plate to fix the galvanic pile.

Optionally, each of the pressing pieces includes: the second air cylinders are arranged at the output ends of the first air cylinders, the output ends of the second air cylinders of the two pressing pieces are arranged oppositely, and each second air cylinder is movable along a second direction respectively; the first pressing part is arranged at the output end of the second cylinder and is matched with the supporting plate to fix the galvanic pile.

Optionally, the first pressing part is formed into a plate structure, a first end of the first pressing part is connected with an output end of the second cylinder, a second end of the first pressing part is provided with a limiting part near one side of the quick-change disc, and the limiting part is provided with a first side wall and a second side wall; the first side wall is configured to be adapted to position an upper end plate of the stack in the first direction, and the second side wall is configured to be adapted to position the upper end plate in the second direction.

Optionally, the holding tool assembly further includes: the first positioning part is arranged on one side of the quick-change disc, which is far away from the limiting assembly, and is configured to be suitable for positioning the lower end plate of the electric pile.

Optionally, the base is an electric cylinder extending along the first direction, and the jacking piece is arranged at an output end of the electric cylinder.

Optionally, the limiting assembly includes: the base is arranged on the jacking piece; the output end of the third cylinder is far away from the base and is movable along the first direction; the second pressing part is arranged at the output end of the third cylinder and moves synchronously with the output end of the third cylinder, and the second pressing part is matched with the base to fix the holding tool assembly.

Optionally, the limiting assembly further includes: and the second positioning part is arranged on one side of the base close to the holding tool assembly and is configured to be suitable for positioning the fuel cell.

According to a second aspect of the present utility model, there is provided a fuel cell stacking apparatus including the above-described fuel cell stacking assist device.

According to the stacking auxiliary device of the fuel cell, the holding tool assembly is detachably connected with the limiting assembly, so that the holding tool assembly and the stacked electric pile can be synchronously transferred to the next process after the stacking process of the electric pile is completed, the holding tool assembly can fix the stacked electric pile, dislocation during electric pile transfer can be avoided, the alignment degree of the electric pile is ensured, and the stacking auxiliary device of the fuel cell has low requirements on the appearance characteristics of the electric pile and strong applicability.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a schematic structural view of a stack assistance device of a fuel cell according to an embodiment provided by the present utility model;

fig. 2 is a front view of a gripper assembly of a stack assistance device of a fuel cell according to an embodiment of the present utility model;

fig. 3 is a top view of a clamp assembly of a stack assist device for a fuel cell according to one embodiment of the present utility model;

fig. 4 is a schematic structural view of a first hold-down portion of a stack assisting apparatus of a fuel cell according to an embodiment provided by the present utility model;

fig. 5 is a schematic structural view of a base and a jack of a stack assisting apparatus of a fuel cell according to an embodiment provided by the present utility model;

fig. 6 is a schematic structural view of a stopper assembly of a stack assistance device of a fuel cell according to an embodiment of the present utility model.

Reference numerals

A stack auxiliary device 100 of a fuel cell;

a base 10;

a jacking member 20;

a spacing assembly 30; a base 31; a third cylinder 32; a second pressing portion 33; a second positioning portion 34;

a holding fixture assembly 40; a quick change disc 41; a support plate 42; a pressing down assembly 43; a first cylinder 431; a hold-down piece 432; a second cylinder 4321; a first pressing portion 4322; a first sidewall 4323; a second sidewall 4324; the first positioning portion 44.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

A stack assistance device 100 for a fuel cell according to an embodiment of the present utility model will be described in detail with reference to the drawings.

As shown in fig. 1 to 6, the stack assistance device 100 of the fuel cell according to the embodiment of the utility model includes a base 10, a jack 20, a limit assembly 30 and a holding fixture assembly 40.

Specifically, the lifting member 20 is movably disposed on the base 10 along the first direction, the limiting component 30 is disposed on the lifting member 20, the holding device component 40 is detachably disposed on the limiting component 30 to receive and fix the stack of the fuel cell, and at least a portion of the limiting component 30 moves synchronously with the lifting member 20 to adjust the position of the holding device component 40 in the first direction.

In other words, as shown in fig. 1, the stack auxiliary device 100 of the fuel cell according to the embodiment of the present utility model mainly comprises a base 10, a lifting member 20, a limiting assembly 30 and a holding tool assembly 40, wherein the lifting member 20 may be formed as a plate structure, the lifting member 20 is movably disposed on the base 10 along a first direction, i.e., a vertical direction, so as to adjust a position of the lifting member 20 in the first direction, the limiting assembly 30 is disposed on the lifting member 20 so as to move synchronously with the lifting member 20, the holding tool assembly 40 performs a function of receiving and fixing a stack of the fuel cell, and the stack may include a lower end plate, a bipolar plate, an MEA (membrane electrode) and an upper end plate.

As shown in fig. 2 and fig. 3, the holding tool assembly 40 is detachably arranged on the limiting assembly 30, so that the holding tool assembly 40 can synchronously move along with the limiting assembly 30, the holding tool assembly 40 plays a role in supporting and synchronously descending a galvanic pile in the stacking process of the galvanic pile, the descending distance of the holding tool assembly 40 each time can be the same as the thickness of one piece of the MEA or one piece of the bipolar plate, and therefore the four-axis robot is guaranteed to be positioned at the same position relative to the holding tool assembly 40 when stacking the bipolar plate and the MEA each time, the time for the four-axis robot to enter the holding tool assembly 40 in the stacking process is saved, and the stacking efficiency of the fuel cell can be improved. After the stacking work of the electric pile is completed, the holding tool assembly 40 fixes the stacked electric pile, the holding tool assembly 40 is separated from the limiting assembly 30, then the holding tool assembly 40 and the stacked electric pile can be automatically docked with the holding tool assembly 40 through the six-axis robot, and the holding tool assembly 40 and the stacked electric pile can be transferred to the next working procedure for press mounting.

Therefore, according to the stack auxiliary device 100 for a fuel cell provided by the embodiment, the holding tool assembly 40 is detachably connected with the limiting assembly 30, so that the holding tool assembly 40 and a stacked electric pile can be synchronously transferred to the next process after the stacking process of the electric pile is completed, the holding tool assembly 40 can fix the stacked electric pile, dislocation during the transfer of the electric pile can be avoided, the alignment degree of the electric pile can be ensured, and the stack auxiliary device 100 for a fuel cell has low requirement on the appearance characteristics of the electric pile and strong applicability.

According to one embodiment of the present utility model, the harness assembly 40 includes: a quick change tray 41, a support plate 42 and two hold down assemblies 43.

Specifically, the quick-change tray 41 is detachably connected with the limiting component 30, a first side of the quick-change tray 41 is used for receiving a galvanic pile, the supporting plate 42 extends along a first direction, one end of the supporting plate 42 is connected with the quick-change tray 41, two pressing components 43 are respectively arranged on two sides of the supporting plate 42 in the first direction, and the pressing components 43 are movable along the first direction to be matched with the quick-change tray 41 to fix the galvanic pile.

In other words, as shown in fig. 2 and 3, the holding tool assembly 40 of this embodiment may be composed of a quick-change disc 41, a support plate 42 and two pressing assemblies 43, where the quick-change disc 41 is configured to be in a structure adapted to a mother disc on a six-axis robot, the quick-change disc 41 is detachably connected with the limiting assembly 30, when in use, a first side, i.e. an upper side, of the quick-change disc 41 receives a galvanic pile, a lower end of the support plate 42 is fixedly connected with an upper side of the quick-change disc 41, the two pressing assemblies 43 may be disposed on two sides of the support plate 42 in a vertical direction, at least a portion of the pressing assemblies 43 may be movable in the vertical direction, after a stacking procedure of the galvanic pile is completed, two sides of the galvanic pile may be fixed by cooperation of the two pressing assemblies 43 and the quick-change disc 41, and dislocation of the galvanic pile during transferring may be effectively prevented.

In some embodiments of the present utility model, the hold-down assembly 43 includes: the first cylinder 431 and the pressing piece 432, the first cylinder 431 is arranged on the supporting plate 42, the output end of the first cylinder 431 is far away from the quick change disc 41 and is movable along the first direction, the pressing piece 432 is arranged at the output end of the first cylinder 431 and synchronously moves with the output end of the first cylinder 431, and the pressing piece 432 is matched with the supporting plate 42 to fix the galvanic pile.

Specifically, as shown in fig. 2 and 3, the pressing assembly 43 is composed of a first cylinder 431 and a pressing member 432, and a side wall of a fixed portion of the first cylinder 431 may be fixedly installed at a side edge of the support plate 42 vertically disposed, so as to avoid interference between the first cylinder 431 and stacking equipment when stacking stacks, the pressing member 432 is connected to an output end of the first cylinder 431, and the pressing member 432 may be driven by the first cylinder 431 to be far from or near the quick-change tray 41. After the pile is stacked, the pile can be clamped and fixed by driving the pressing piece 432 to approach the quick-change disc 41 through the first cylinder 431.

It should be noted that the first cylinder 431 may be replaced by an electric cylinder or other driving member, so long as the pressing member 432 is controlled to move in the vertical direction, which is not limited herein.

According to one embodiment of the present utility model, each hold down 432 includes: the second cylinders 4321 and the first pressing parts 4322, the second cylinders 4321 are arranged at the output ends of the first cylinders 431, the output ends of the second cylinders 4321 of the two pressing parts 432 are arranged oppositely, each second cylinder 4321 is movable along the second direction, the first pressing parts 4322 are arranged at the output ends of the second cylinders 4321, and the first pressing parts 4322 are matched with the supporting plates 42 to fix the galvanic pile.

That is, as shown in fig. 2 and 3, the pressing members 432 of the two pressing assemblies 43 may be identical in structure or different, and hereinafter, the pressing members 432 of the same structure will be specifically described as examples, wherein the two pressing members 432 are respectively composed of a second cylinder 4321 and a first pressing portion 4322, wherein a side wall of a fixed portion of the second cylinder 4321 is fixedly connected to an output end of the first cylinder 431 so as to be movable synchronously with the output end of the first cylinder 431, the output ends of the second cylinders 4321 of the two pressing members 432 are disposed opposite to each other, and the two first pressing portions 4322 are respectively disposed at the output ends of the two second cylinders 4321.

In this embodiment, the first cylinder 431 drives the pressing member 432 to move in the vertical direction, and the second cylinder 4321 drives the pressing member 432 to move in the horizontal direction, so that when stacking the electric pile, the pressing member 432 is not required to be driven by the first cylinder 431 to be away from the quick-change disc 41, and only the second cylinders 4321 of the two pressing members 432 are required to drive the two first pressing portions 4322 to be away from each other, so that the stacking of the electric pile is not interfered in both the horizontal direction and the vertical direction.

In some embodiments of the present utility model, the first pressing part 4322 is formed in a plate structure, a first end of the first pressing part 4322 is connected to an output end of the second cylinder 4321, a limiting part is disposed at a side of the second end of the first pressing part 4322, which is close to the quick change disc 41, the limiting part has a first side wall 4323 and a second side wall 4324, the first side wall 4323 is configured to limit an upper end plate of the stack in a first direction, and the second side wall 4324 is configured to limit the upper end plate in a second direction.

Specifically, as shown in fig. 2 and 4, the first pressing parts 4322 may be provided in plurality, the first pressing parts 4322 may be provided at intervals in a third direction, the third direction may be a horizontal direction, and the third direction may be perpendicular to the second direction to fix different positions of the stack, the first pressing parts 4322 may be formed in a plate-shaped structure, and a lower side surface of one end of the first pressing part 4322 away from the second cylinder 4321 is provided with a limiting part engaged with the stack.

As shown in fig. 2 and 3, the limiting portion has a first side wall 4323 disposed horizontally and a second side wall 4324 adjacent to the first side wall 4323, when the electric pile is fixed, the first side wall 4323 cooperates with an upper surface of an upper end plate of the electric pile to limit the electric pile in a first direction, and the second side wall 4324 cooperates with a side wall of the upper end plate of the electric pile in a vertical direction to limit the electric pile in a second direction, so that a fixing effect of the first pressing portion 4322 on the electric pile can be improved, and reliability of the holding tool assembly 40 is improved.

According to one embodiment of the present utility model, the clasping assembly 40 further includes: the first positioning portion 44, the first positioning portion 44 is disposed on a side of the quick change tray 41 away from the limiting assembly 30, and the first positioning portion 44 is configured to be suitable for positioning a lower end plate of the stack.

That is, as shown in fig. 2 and 3, the first positioning portion 44 is provided on the upper side of the quick-change tray 41, the first positioning portion 44 may be formed as a plurality of protruding structures, the lower end plate of the stack is provided with a groove structure adapted to the protruding structures, and the lower end plate of the stack may be positioned by the protruding structures and the groove structure, so that the lower end plate may be accurately placed on the quick-change tray 41.

In some embodiments of the present utility model, the base 10 is an electric cylinder extending in a first direction, and the jacking member 20 is provided at an output end of the electric cylinder.

As shown in fig. 1 and 5, in this embodiment, an electric cylinder is used as the base 10, the axis of the electric cylinder is parallel to the first direction, the lifting member 20 is fixedly connected to the output end of the electric cylinder, and the distance of the lifting member 20 moving in the first direction can be accurately controlled by the electric cylinder.

The base 10 may be a lifting structure such as a cylinder or a screw slider, and the utility model is not limited thereto, as long as the lifting member 20 can be controlled to move in the first direction.

According to one embodiment of the present utility model, the spacing assembly 30 includes: a base 31, at least one third cylinder 32 and a second hold-down 33.

The base 31 is disposed on the jacking member 20, the third cylinder 32 is disposed on the base 31, an output end of the third cylinder 32 is far away from the base 31 and is movable along the first direction, the second pressing portion 33 is disposed on the output end of the third cylinder 32 and moves synchronously with the output end of the third cylinder 32, and the second pressing portion 33 cooperates with the base 31 to fix the holding fixture assembly 40.

Specifically, as shown in fig. 1 and 6, the limiting assembly 30 may be composed of a base 31, two third cylinders 32 and a second pressing portion 33, wherein the base 31 is fixedly connected with the jacking member 20 so as to move synchronously with the jacking member 20 in the first direction, and during the moving process, the base 31 does not fall from the jacking member 20, the first end of the third cylinder 32 is connected with the base 31, the second pressing portion 33 is formed into an L-shaped structure, the first end of the second pressing portion 33 may be fixedly connected with the second end of the third cylinder 32, and the second end of the second pressing portion 33 faces the base 31.

In this embodiment, when stacking the galvanic pile, the third air cylinder 32 may drive the second pressing portion 33 to approach the base 31, so that the second end of the second pressing portion 33 cooperates with the base 31 to clamp and fix the holding fixture assembly 40, so that when the holding fixture assembly 40 moves along with the limiting assembly 30, the holding fixture assembly 40 will not displace relative to the limiting assembly 30, and alignment degree of stacking the galvanic pile can be ensured.

In some embodiments of the present utility model, the spacing assembly 30 further comprises: the second positioning portion 34, the second positioning portion 34 is disposed on a side of the base 31 near the holding fixture assembly 40, and the second positioning portion 34 is configured to be suitable for positioning the fuel cell.

That is, as shown in fig. 6, the second positioning portion 34 is disposed on a side of the base 31 facing the holding tool assembly 40, and the second positioning portion 34 may be formed by two rod-shaped members, in this embodiment, positioning holes corresponding to positions of the second positioning portion 34 are disposed on sub-components of the fuel cell, and the fuel cell can be positioned in the stacking process of the electric stack by matching the two rod-shaped members with the positioning holes on the sub-components.

The present utility model also provides a stacking apparatus for fuel cells, which may include the stacking assistance device 100 for fuel cells of any of the above embodiments, a four-axis robot that can precisely stack bipolar plates and MEAs of a stack on the gripper assembly 40, and a six-axis robot that can transfer the gripper assembly 40 to the next station after the stack is completed.

When the stacking device of the fuel cell is used, the lower end plate of the electric pile can be placed on the quick-change disc 41 manually, then the bipolar plate and the MEA of the electric pile are stacked above the lower end plate through the four-axis robot, and when the stacking device is used, the base 10 drives the lifting piece 20 to move downwards, so that the holding tool assembly 40 moves downwards, the descending distance of the holding tool assembly 40 can be the same as the thickness of one MEA or one bipolar plate each time, the four-axis robot is guaranteed to be at the same position each time when the bipolar plate and the MEA are stacked, the time for the four-axis robot to enter the holding tool assembly 40 in the stacking process is saved, and the stacking efficiency of the fuel cell can be improved.

After the four-axis robot completes stacking of bipolar plates and MEAs, the upper end plate of the electric pile is placed into the holding tool assembly 40 by manpower, then the electric pile is clamped and fixed by the holding tool assembly 40, finally the holding tool assembly 40 and the electric pile are integrally transferred to the next procedure for press fitting through butt joint of a master disc on the six-axis robot and a quick-change disc 41 on the holding tool assembly 40, and after the machining procedure is completed, the six-axis robot transfers the holding tool assembly 40 to the limiting assembly 30 for stacking of the next electric pile.

In summary, according to the fuel cell stacking apparatus of the present utility model, the clasping tool assembly 40 is detachably connected with the limiting assembly 30, so that after the stacking process of the stack is completed, the clasping tool assembly 40 and the stacked stack can be synchronously transferred to the next process, and the clasping tool assembly 40 can fix the stacked stack, so that dislocation during stack transfer can be avoided, alignment of the stack can be ensured, and the fuel cell stacking apparatus of the present utility model has low requirements on appearance characteristics of the stack, and has strong applicability.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. A stack assist apparatus of a fuel cell, characterized by comprising:

a base (10);

the jacking piece (20) is movably arranged on the base (10) along a first direction;

the limiting assembly (30), the said limiting assembly (30) locates the said jacking piece (20);

the holding tool assembly (40) is detachably arranged on the limiting assembly (30) to receive and fix a galvanic pile of the fuel cell, and at least one part of the limiting assembly (30) and the jacking piece (20) synchronously move so as to adjust the position of the holding tool assembly (40) in the first direction.

2. The stack assistance device of a fuel cell according to claim 1, wherein the gripper assembly (40) comprises:

a quick-change disc (41), wherein the quick-change disc (41) is detachably connected with the limiting assembly (30), and a first side of the quick-change disc (41) is used for receiving the galvanic pile;

-a support plate (42), said support plate (42) extending in said first direction, one end of said support plate (42) being connected to said quick change disc (41);

the two pressing assemblies (43) are respectively arranged on two sides of the supporting plate (42) in the first direction, and the pressing assemblies (43) are movable along the first direction to be matched with the quick change disc (41) to fix the galvanic pile.

3. The stack assistance device of a fuel cell according to claim 2, wherein the pressing down assembly (43) includes:

the first air cylinder (431) is arranged on the supporting plate (42), and the output end of the first air cylinder (431) is far away from the quick-change disc (41) and is movable along the first direction;

and the pressing piece (432) is arranged at the output end of the first cylinder (431) and moves synchronously with the output end of the first cylinder (431), and the pressing piece (432) is matched with the supporting plate (42) to fix the galvanic pile.

4. A stack assistance device for a fuel cell according to claim 3, wherein each of said hold-down pieces (432) includes:

the second air cylinders (4321), the second air cylinders (4321) are arranged at the output ends of the first air cylinders (431), the output ends of the second air cylinders (4321) of the two pressing pieces (432) are arranged oppositely, and each second air cylinder (4321) is movable along a second direction respectively;

the first pressing part (4322) is arranged at the output end of the second cylinder (4321), and the first pressing part (4322) is matched with the supporting plate (42) to fix the galvanic pile.

5. The stack assistance device of a fuel cell according to claim 4, characterized in that the first pressing portion (4322) is formed in a plate-like structure, a first end of the first pressing portion (4322) is connected to an output end of the second cylinder (4321), a second end of the first pressing portion (4322) is provided with a stopper portion on a side close to the quick change tray (41), the stopper portion having a first side wall (4323) and a second side wall (4324);

the first side wall (4323) is configured to be adapted to position an upper end plate of the stack in the first direction, and the second side wall (4324) is configured to be adapted to position the upper end plate in the second direction.

6. The stack assistance device of a fuel cell according to claim 2, wherein the gripper assembly (40) further comprises:

and a first positioning part (44), wherein the first positioning part (44) is arranged on one side of the quick-change disc (41) away from the limiting assembly (30), and the first positioning part (44) is configured to be suitable for positioning the lower end plate of the electric pile.

7. The stack assistance device of a fuel cell according to claim 1, characterized in that the base (10) is an electric cylinder extending in the first direction, the jacking member (20) being provided at an output end of the electric cylinder.

8. The stack assistance device of a fuel cell according to claim 1, wherein the limiting assembly (30) comprises:

a base (31), wherein the base (31) is arranged on the jacking piece (20);

the third air cylinder (32) is arranged on the base (31), and the output end of the third air cylinder (32) is far away from the base (31) and is movable along the first direction;

the second pressing part (33), the second pressing part (33) is arranged at the output end of the third cylinder (32) and moves synchronously with the output end of the third cylinder (32), and the second pressing part (33) is matched with the base (31) to fix the holding tool assembly (40).

9. The stack assistance device of a fuel cell according to claim 8, characterized in that the limiting assembly (30) further comprises:

and a second positioning part (34), wherein the second positioning part (34) is arranged on one side of the base (31) close to the holding tool assembly (40), and the second positioning part (34) is configured to be suitable for positioning the fuel cell.

10. A stack apparatus of a fuel cell, characterized by comprising the stack auxiliary device of a fuel cell according to any one of claims 1 to 9.