CN213660468U

CN213660468U - Fuel cell stack fixing device and electric equipment

Info

Publication number: CN213660468U
Application number: CN202023015784.5U
Authority: CN
Inventors: 姜洋; 唐洪峰
Original assignee: Shanghai Re Fire Energy and Technology Co Ltd
Current assignee: Shanghai Re Fire Energy and Technology Co Ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-07-09
Anticipated expiration: 2030-12-15

Abstract

The application discloses a fuel cell stack fixing device and electric equipment, and relates to the technical field related to fuel cells, wherein the fuel cell stack fixing device comprises a shell for accommodating a cell stack, an adjusting assembly and a cell stack bracket; the top of the shell is provided with an opening, the bottom of the shell is provided with a first boss and a second boss which are used for supporting the cell stack, the first boss and the second boss are spaced at a preset interval, and the supporting surfaces face the opening; the adjusting component is arranged on one side of the second boss far away from the first boss; the stack support is used with the adjusting component cooperation, and the stack support can be fixed in the different positions of second boss under adjusting component's restriction to the not unidimensional battery stack of adaptation. This application utilizes adjusting part's limiting action to make the pile support fixed in the different positions of second boss, and after the pile support is fixed, the pile support is injectd the space of adaptation in not unidimensional battery pile jointly with the casing, guarantees that the device can be applicable to not the fixed and installation of unidimensional battery pile.

Description

Fuel cell stack fixing device and electric equipment

Technical Field

The present application relates to the field of fuel cell technology, and more particularly, to a fuel cell stack fixing device and an electric apparatus.

Background

A fuel cell is a device that converts chemical energy into electrical energy through an electrochemical reaction of hydrogen and oxygen, and has a very promising development prospect due to its advantages of high efficiency, low noise, and zero pollution. The core component of the fuel cell is a fuel cell stack assembled by a plurality of single cells (bipolar plates) in a series connection mode, and the number of the bipolar plates in the fuel cell stack is adjusted to obtain the fuel cells with different power levels. Since the bipolar plates themselves have a certain thickness tolerance and assembly deviation, the fuel cell stack assembled by a large number of sheets has a large tolerance in the length direction. Taking a fuel cell stack assembled by 145 bipolar plates as an example, the tolerance of the fuel cell stack in the length direction can reach +/-15 mm.

Since the total length of the fuel cell stack is affected by the thickness and the size of the bipolar plate, the number of the bipolar plates and the tolerance of the bipolar plate, the total length of the fuel cell stack is not a stable value, and when the fuel cell stack is packaged in a high-tightness shell, the same shell cannot fix and install the fuel cell stacks with different length and size.

Therefore, how to fix and install fuel cell stacks with different length dimensions under the condition that the total length of the fuel cell stack is not a stable value becomes a problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

The purpose of this application is to provide a fuel cell stack fixing device, it can realize the fixed and installation to the battery stack of different length sizes under the circumstances that the total length of battery stack is not a stable numerical value.

Another object is to provide an electromotive device equipped with the fuel cell stack fixture as described above.

In a first aspect, an embodiment of the present application provides a fuel cell stack fixing device, which includes:

the shell is used for accommodating the cell stack, the top of the shell is opened, and the bottom of the shell is provided with a first boss and a second boss which are used for supporting the cell stack; the first boss and the second boss are spaced by a preset distance, and the supporting surfaces of the first boss and the second boss face the opening;

the adjusting assembly is arranged on one side of the second boss, which is far away from the first boss;

and the stack support is matched with the adjusting assembly for use, and can be fixed at different positions of the second boss under the limitation of the adjusting assembly so as to be adapted to battery stacks with different sizes.

In one possible embodiment, the first boss and the second boss define a maximum length in a length direction of the case that is greater than a length of the cell stack.

In a possible embodiment, the adjusting component is a threaded hole group extending downwards from the supporting surface of the second boss and arranged along the length direction of the second boss, and the stack support is provided with a long waist hole matched with the threaded hole group.

In one possible embodiment, the length of the long waist hole is greater than the diameter of the threaded holes in the set of threaded holes and less than the maximum distance between the circumferences of adjacent threaded holes.

In a possible embodiment, the adjusting component is a slide rail extending along the length direction of the second boss, the slide rail is arranged in a concave part of the second boss, which is concave inwards from the supporting surface, and the pile support is provided with a slide block matched with the slide rail.

In a possible embodiment, the slide rail includes a limiting rod, a limiting hole matched with the limiting rod is arranged inside the slide block, and the slide block is sleeved on the limiting rod through the limiting hole.

In a possible embodiment, the adjusting component is positioned outside the second boss and comprises a push rod and a driving mechanism for driving the push rod to move, and the push rod is connected with the pile support.

In a possible embodiment, the number of the stack holders is one or more, and in the case of a plurality of stack holders, the stack holders are arranged at equal intervals in the width direction of the second bosses.

In a possible embodiment, the second boss includes a plurality of mounting blocks, the plurality of mounting blocks being arranged in a width direction of the case, each mounting block corresponding to one stack holder.

In a second aspect, embodiments of the present application provide an electrically powered device equipped with the fuel cell stack fixture described above.

Compared with the prior art, the beneficial effect of this application:

this application utilizes adjusting part's limiting action to make the pile support fixed in the different positions of second boss, and after the pile support is fixed, the pile support is injectd the space of adaptation in not unidimensional battery pile jointly with the casing, guarantees that the device can be applicable to not the fixed and installation of unidimensional battery pile.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural view illustrating a fuel cell stack fixing apparatus according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view taken along line A-A of a fuel cell stack fixture according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of an adjustable assembly according to an embodiment of the present application;

FIG. 4 is a schematic diagram illustrating a stack structure in a fuel cell stack fixture according to an exemplary embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of the region B in FIG. 1;

FIG. 6 is a schematic view of a fuel cell stack fixture at a minimum limit size according to an embodiment of the present application;

fig. 7 is a schematic diagram illustrating a fuel cell stack fixture at an extreme maximum size according to an embodiment of the present disclosure.

Illustration of the drawings:

100 cell stacks; 110 a front end plate; 120 rear end plate; 130 sets of bipolar plates; 200 of a shell; 210 a first boss; 220 a second boss; 221 an adjustment assembly; 300 a stack support; 310 a transverse plate; 311 long waist holes; 320 longitudinal plates; 400 connecting the bolts.

Detailed Description

The following detailed description of embodiments of the present application will be provided in conjunction with the accompanying drawings, which are included to illustrate and not to limit the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, e.g. as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is noted that the terms "first" and "second", etc. are used merely to distinguish descriptions, and are not to be construed as indicating or implying relative importance.

According to one aspect of the present application, a fuel cell stack securing apparatus is provided for securing and mounting of a stack of different length dimensions. Referring to fig. 4, the stack 100 includes a front end plate 110 and a rear end plate 120, and a plurality of sets of bipolar plates 130 between the front end plate 110 and the rear end plate 120, and the length of the stack 100 is affected by the number of pieces, thickness and thickness tolerance of the bipolar plates 130, and is not a fixed value, so that a space for adapting to stacks of different length sizes is defined by the device to fix the stacks of different length sizes.

Referring to fig. 1 to 2, the fuel cell stack fixing device includes a case 200 for accommodating a cell stack 100, a regulating assembly 221, and a stack holder 300. The housing 200 is configured to: the top is open, and the bottom is provided with a first boss 210 and a second boss 220 for supporting the cell stack 100; the first boss 210 and the second boss 220 are spaced apart by a predetermined interval, and the support surfaces of the first boss 210 and the second boss 220 face the opening. The adjustment assembly 221 is disposed on a side of the second boss 220 remote from the first boss 210. The stack holder 300 is used in cooperation with the adjustment assembly 221, and the stack holder 300 may be fixed at different positions of the second bosses 220 under the limitation of the adjustment assembly 221 to fit different sizes of the cell stack 100.

In the present application, the length of the case 200, the length of the second bosses 220, and the length of the cell stack 100 all extend in the direction indicated by the arrow 1; the width of the housing 200 and the width of the second boss 220 each extend in the direction indicated by the arrow 2. It should be noted that the directions of the arrow 1 and the arrow 2 are defined only for convenience of description, and are not used to define the arrangement orientation of the case 200, the second bosses 220, and the cell stack 100.

The working process and the working principle of the application are as follows:

when fixing the cell stack 100, first, the cell stack 100 is placed in the case 200, and at this time, the first bosses 210 of the bottom of the case 200 support the front end plate 110 and the second bosses 220 support the rear end plate 120. Then, the position of the stack holder 300 on the second bosses 220 is adjusted, and after the stack holder 300 is moved to a preset position (i.e., the stack holder 300 is just in contact with the rear end plate 120), the stack holder 300 is fixed, the stack holder 300 and the case 200 together define a space for fitting to the cell stack 100, and the cell stack 100 is fixed.

In addition, when the stacks with different sizes are fixed, the stack support 300 is fixed at different positions of the second bosses 220 under the limitation of the adjusting assembly 221, and after the stack support 300 is fixed, the stack support 300 and the housing 200 jointly define a space adapted to the stacks with different sizes, so that the problem that the fixation of the stack 100 is easily influenced by the number of the bipolar plates 130, the thickness and the thickness tolerance of the stack can be avoided.

In one embodiment, referring to fig. 2, 6 and 7, the first bosses 210 and the second bosses 220 define a maximum length in the length direction of the case 200 that is greater than the length of the cell stack 100, which can ensure that the cell stack 100 is at the limit minimum length and the limit maximum length, and the second bosses 200 can each function to support the cell stack 100.

In one embodiment, referring to fig. 3, 5-7, the adjustment assembly 221 is a set of threaded holes extending downward from the support surface of the second boss 220 and arranged along the length of the second boss. Each stack holder 300 corresponds to two screw hole groups. The stack bracket 300 comprises a transverse plate 310 and a longitudinal plate 320, wherein the transverse plate 310 is used for connecting with the second boss 220, and both sides of the transverse plate 310 are provided with long waist holes 311 matched with the threaded hole groups; the vertical plate 320 is disposed on the horizontal plate 310, and after the stack frame 300 is moved to a predetermined position, the vertical plate 320 is screwed to the rear end plate 120 by the coupling bolt 400.

Preferably, the number of the stack holders 300 is one or more. When one stack holder 300 is provided, the stack holder 300 is disposed at the central position in the width direction of the second boss 220; when the stack holder 300 is plural, the stack holder 300 is arranged at equal intervals in the width direction of the second boss 220, and the second boss 220 includes a plurality of mounting blocks, the plurality of mounting blocks are arranged in the width direction of the case 200, and each mounting block corresponds to one stack holder 300.

Preferably, the length of the long waist hole 311 is greater than the diameter of the threaded holes in the threaded hole group and less than the maximum distance between the circumferences of adjacent threaded holes. After the position of the stack support 300 on the second boss 220 is determined under the limitation of the thread hole group, the position of the stack support 300 on the second boss 200 is further finely adjusted by using the long waist hole 311.

Preferably, referring to fig. 6 and 7, the screw hole group includes at least 6 holes extending in a length direction of the second boss 220, and the number and position of the holes in the screw hole group are determined according to the limit minimum length and the limit maximum length of the cell stack 100.

It should be noted that the structure of the stack holder 300 is only exemplary, and the structure of the stack holder 300 is not specifically limited in this application, and any structure that can be used in combination with the threaded hole set and can be connected to the back end plate 120 falls within the protection scope of this application.

In one embodiment, the adjusting component 221 is a slide rail (not shown) extending along the length direction of the second boss, the slide rail is disposed in a recessed portion of the second boss 220 recessed from the supporting surface, and the stack holder 300 is provided with a slide block (not shown) engaged with the slide rail. One slide rail corresponds to one stack holder 300.

The sliding block is arranged on the sliding rail by the existing proper method, as long as the sliding block and the sliding rail can be matched with each other. For example, the slide rail includes the gag lever post, and the inside of slider is equipped with the spacing hole with gag lever post complex, and the slider passes through the spacing pot head and slides on the gag lever post and along the gag lever post. If the sliding rail supporting surface is provided with a plurality of limiting grooves, the sliding block is provided with limiting bulges matched with the limiting grooves on two sides, the limiting bulges correspond to the limiting grooves in position, and the sliding block is embedded into the limiting grooves on two sides of the sliding rail and slides along the limiting grooves on two sides.

Preferably, the stack holder 300 moves along the slide rail under a driving force provided by a driving mechanism such as a manual or motor driving mechanism, a hydraulic driving mechanism, or the like. After the stack holder 300 is moved to the preset position, the stack holder 300 is screw-coupled with the rear end plate 120 in the cell stack 100. When no driving force is applied to the stack holder 300, the stack holder 300 is relatively fixed to the slide rail and does not move relatively.

The number of the stack holders 300 is one or more. When one stack holder 300 is provided, the stack holder 300 is disposed at the central position in the width direction of the second boss 220; when the stack holder 300 is plural, the stack holder 300 is arranged at equal intervals in the width direction of the second boss 220, and the second boss 220 includes a plurality of mounting blocks arranged in the width direction of the case 200. Each of the mounting blocks corresponds to one stack holder 300 and includes a support surface having an inward recess, or two mounting bars having a thickness spaced apart at a predetermined interval in the width direction of the case 200.

Preferably, the length and position of the slide rail are determined according to the extreme minimum length and the extreme maximum length of the cell stack 100.

It should be noted that, the structures of the slide rail and the slide block are only exemplary, and the structures of the slide rail and the slide block are not specifically limited in the present application, and all structures capable of achieving sliding connection between the slide block and the slide rail fall within the protection scope of the present application.

In one embodiment, the adjustment assembly 221 is located outside of the second boss 220. The adjusting assembly 221 includes a push rod and a driving mechanism (not shown) for driving the push rod to move, and the push rod is connected to the stack holder 300 and used for adjusting different positions of the stack holder 300 on the second boss 220. The drive mechanism may comprise an electric motor drive or a hydraulic drive.

Compared with the prior art, the beneficial effects obtained by the application are as follows:

the limiting function of the adjusting component 221 is utilized to enable the stack support 300 to be fixed at different positions of the second boss 220, after the stack support 300 is fixed, the stack support 300 and the shell 200 jointly limit a space adaptive to the cell stacks 100 with different sizes, and the device is guaranteed to be suitable for fixing and installing the cell stacks 100 with different sizes.

The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present application, and these modifications and substitutions should also be regarded as the protection scope of the present application.

Claims

1. A fuel cell stack securing device, comprising:

the adjusting assembly is arranged on one side, far away from the first boss, of the second boss;

and the stack support is matched with the adjusting assembly for use, and can be fixed at different positions of the second boss under the limitation of the adjusting assembly so as to adapt to the battery stacks with different sizes.

2. The fuel cell stack securing device according to claim 1, wherein the first and second bosses define a maximum length in a length direction of the housing that is greater than a length of the cell stack.

3. The fuel cell stack fixture according to claim 2, wherein the adjusting member is a threaded hole set extending downward from the second boss support surface and arranged along a length direction of the second boss, and the stack holder is provided with a long waist hole engaged with the threaded hole set.

4. The fuel cell stack fixture of claim 3 wherein the length of the long waist hole is greater than the diameter of the threaded holes in the set of threaded holes and less than the maximum distance of the circumference of adjacent threaded holes.

5. The fuel cell stack fixing device according to claim 2, wherein the adjusting member is a slide rail extending along a length direction of the second boss, the slide rail is disposed in a recessed portion of the second boss recessed inward from the support surface, and the stack holder is provided with a slider engaged with the slide rail.

6. The fuel cell stack fixing device according to claim 5, wherein the slide rail includes a limiting rod, a limiting hole engaged with the limiting rod is provided inside the slide block, and the slide block is fitted over the limiting rod through the limiting hole.

7. The fuel cell stack fixing device according to claim 2, wherein the adjusting assembly is located outside the second boss and includes a push rod and a driving mechanism for driving the push rod to move, and the push rod is connected to the stack support.

8. The fuel cell stack fixing device according to any one of claims 1 to 7, wherein the number of the stack holders is one or more, and when the number of the stack holders is plural, the stack holders are arranged at equal intervals in a width direction of the second boss.

9. The fuel cell stack fixing device according to claim 8, wherein the second boss includes a plurality of mounting blocks arranged in a width direction of the case, each of the mounting blocks corresponding to one of the stack holders.

10. An electrically powered device, characterized in that it is provided with a fuel cell stack fixture according to any one of claims 1 to 9.