CN113314753B

CN113314753B - Datum insert for fuel cell plate short circuit protection

Info

Publication number: CN113314753B
Application number: CN202110867593.1A
Authority: CN
Inventors: 徐黎明; 周敦凡; 沈强
Original assignee: Aideman Hydrogen Energy Equipment Co ltd
Current assignee: Aideman Hydrogen Energy Equipment Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-10-15
Anticipated expiration: 2041-07-30
Also published as: CN113314753A

Abstract

The invention relates to the technical field of fuel cells, in particular to a reference insertion piece for short-circuit protection of a fuel cell panel, which comprises an L-shaped reference positioning piece and the fuel cell panel, wherein the L-shaped reference positioning piece is arranged at the corner of the fuel cell panel and is of an L-shaped structure, the lengths of two sides of the L-shaped reference positioning piece are equal, the fuel cell panel is matched with a pair of L-shaped reference positioning pieces for use, the L-shaped reference positioning pieces are distributed diagonally of the fuel cell panel, the L-shaped reference positioning piece is formed by combining a support frame and an insulating sleeve, each L-shaped reference positioning piece is formed by overlapping two support frames, and the insulating sleeve wraps the periphery of each support frame. The invention utilizes the diagonal reference, does not occupy the area of the fuel cell plate, can be compressed, further reduces the volume of the fuel cell stack in the same scale along with the compression thickness of the fuel cell stack, and is more beneficial to the installation and the use of small-sized equipment.

Description

Datum insert for fuel cell plate short circuit protection

Technical Field

The invention relates to the technical field of fuel cells, in particular to a reference insert for short-circuit protection of a fuel cell plate.

Background

The fuel cell is a novel battery which can convert hydrogen fuel into electricity, the hydrogen completes proton and electron separation through an exchange membrane, the electrons are led out through a bipolar plate, one set of combination of the exchange membrane and the bipolar plate is called as a fuel cell plate, the fuel cell which completes one fuel cell plate is formed on a substrate by overlapping a plurality of fuel cell plates, and when the fuel cell plate is overlapped, a reference inserting piece is needed to be used to position the plurality of fuel cell plates.

Chinese patent publication No. CN102376962A discloses a datum insert for short circuit protection, and in particular, a subassembly for a fuel cell stack includes a fuel cell plate and datum holes formed in the fuel cell plate for aligning the fuel cell plate during assembly of the fuel cell stack. The subassembly also includes a datum insert disposed adjacent to the datum hole of the fuel cell plate. The datum insert is configured to prevent bending of the fuel cell plate at the datum hole during assembly of the fuel cell stack.

The datum inserts prevent bending at the datum holes during assembly of the fuel cell stack, but this type of protection has problems in that, for one, datum holes are made adjacent to the fuel cell plates and then the datum inserts are inserted, and positioning in this way requires the fuel cell plates themselves to be made with datum holes, taking up surface space of the fuel cell plates.

And secondly, the datum insertion piece is inserted into each datum hole to be positioned, the thickness of the fuel cell plate is not increased, the thickness of the fuel cell plate is thicker than that of a power generation cell stack with the same standard, the area is larger, the fuel cell plate is not beneficial to being installed on small equipment to use, and the cruising time is shortened in a certain space to a certain extent.

There is therefore a need to design a datum insert for fuel cell plate short circuit protection to address the above problems.

Disclosure of Invention

The invention aims to provide a reference insert for short-circuit protection of a fuel cell plate, which aims to solve the problems that the thickness of a power generation cell stack is thicker and the area is larger than that of a power generation cell stack of the same standard, the power generation cell stack is not suitable for being installed on small equipment, and the endurance time is shortened in a certain space to a certain extent.

In order to achieve the purpose, the invention provides the following technical scheme: a benchmark plug-in components for fuel cell board short-circuit protection, including L shape benchmark setting element and fuel cell board, the corner of fuel cell board all is provided with L shape benchmark setting element, L shape benchmark setting element is "L" shape structure, the both sides length of L shape benchmark setting element equals, fuel cell board cooperates a pair of L shape benchmark setting element to use, a pair of L shape benchmark setting element is the diagonal distribution of fuel cell board, L shape benchmark setting element is made by support frame and insulating bush combination, and every L shape benchmark setting element comprises two support frame coincide, the periphery parcel of support frame has insulating bush, the upper and lower surface of insulating bush all evenly is fixed with links up the piece, the lower surface of support frame has seted up links up the groove, and links up the inslot and be provided with compressible linking piece, compressible linking piece is "X" shape, the outer surface block of compressible joint spare has the linking post, and links up the post and fix on the support frame.

Preferably, the linking blocks on the two support frames are distributed in a staggered manner, and the two rows of linking blocks are mutually inserted.

Preferably, the compressible linking piece includes the main tributary fagging, logical groove has been seted up on the surface of main tributary fagging, it is connected with the subplate to lead to the inslot integration, the quantity of subplate is three, one the subplate perks upper left, two in addition the perks of subplate below right side, and the main tributary fagging is "X" shape with the subplate and distributes.

Preferably, the main supporting plate is provided with a clamping groove, and the auxiliary plate and the clamping groove are both provided with clamping grooves at opposite positions.

Preferably, one surface of the connecting column is in an inverted tooth shape, and the connecting column penetrates through the clamping groove and is clamped with the clamping groove.

Preferably, the joining grooves are obliquely arranged, and the main supporting plate and the auxiliary plate are inserted into the joining grooves.

Preferably, the bottom of the L-shaped reference positioning piece is fixed with a middle insulating block, the inside of the middle insulating block is uniformly distributed with two supporting rods, the number of the L-shaped reference positioning pieces is two, the L-shaped reference positioning pieces are distributed on two sides of the middle insulating block, two ends of each supporting rod are respectively connected and fixed with two supporting frames, and the middle insulating block is connected and fixed with an insulating sleeve.

Compared with the prior art, the invention has the beneficial effects that: this a benchmark inserted piece for fuel cell board short-circuit protection utilizes the diagonal benchmark, does not occupy fuel cell board self area, and compressible design, along with fuel cell stack compression thickness, further reduces with the volume of standard fuel cell stack, more does benefit to small-size equipment and installs and use.

(1) Through the L shape benchmark setting element of design cooperation fuel cell board corner, be diagonal distribution with a pair of L shape benchmark setting element, the assembly battery pile, every fuel cell board only needs the diagonal card to go into between two L shape benchmark setting elements, and L shape benchmark setting element adopts double-deck compound material, and the support frame is responsible for supporting, and insulating cover is responsible for insulating protection, has solved the problem of occuping the fuel cell board space.

Be sandwich structure design with L shape benchmark setting element and compressible linking piece, link up through compressible linking piece between per two blocks of support frames, compressible linking piece inserts and closes in linking inslot, when the battery pile is compressed sealed, two support frames also can be compressed, the bottom of compressible linking piece can insert and link up the inslot and fix through linking post block to along with fuel cell pile compression thickness, further reduce with the volume of scale fuel cell pile, more do benefit to small-size equipment and install and use.

Drawings

FIG. 1 is a schematic cross-sectional front view of a structure according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional front view illustrating the L-shaped datum spacer of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the L-shaped datum locator of FIG. 2 according to the present invention;

FIG. 4 is a side cross-sectional view of the construction of the compressible joint of FIG. 2 according to the present invention;

FIG. 5 is a schematic view of the compressible joint of FIG. 2 according to the present invention in its entirety;

FIG. 6 is a schematic top view of the structure of the insulating block and the supporting rod of FIG. 1 according to the present invention;

FIG. 7 is a schematic cross-sectional front view illustrating a second embodiment of the present invention;

FIG. 8 is a schematic view of the compressible joint of FIG. 7 according to the present invention in its entirety.

In the figure: 1. an L-shaped datum locator; 11. a support frame; 12. an insulating sleeve; 13. a joining block; 14. a joining groove; 2. connecting the column; 3. a compressible joint; 31. a main supporting plate; 32. a through groove; 33. a sub-board; 34. a card slot; 4. a middle insulating block; 5. a support bar; 6. a fuel cell plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 8, a first embodiment of the present invention:

including L shape reference positioning piece 1 and fuel cell board 6, the corner of fuel cell board 6 all is provided with L shape reference positioning piece 1, L shape reference positioning piece 1 is "L" shape structure, L shape reference positioning piece 1's both sides length equals, L shape reference positioning piece 1's inboard shape coincide with 6 corners of fuel cell board, do benefit to the reference positioning, fuel cell board 6 cooperates a pair of L shape reference positioning piece 1 to use, a pair of L shape reference positioning piece 1 is fuel cell board 6's diagonal distribution (not shown), just can fix a position when fuel cell board 6 piles up like this fast, do not occupy the space of fuel cell board 6 self.

The L-shaped reference positioning piece 1 is formed by combining support frames 11 and insulating sleeves 12, each L-shaped reference positioning piece 1 is formed by overlapping two support frames 11, the insulating sleeves 12 wrap the peripheries of the support frames 11, the insulating sleeves 12 are made of insulating materials, can be made of ceramic, hard rubber and the like, the support frame 11 is made of metal, can be made of aluminum alloy, steel and the like, the support frame 11 plays a role of supporting and maintaining strength, the insulating sleeve 12 plays an insulating role, the upper surface and the lower surface of the insulating sleeve 12 are uniformly fixed with connecting blocks 13, the lower surface of the support frame 11 is provided with a connecting groove 14, a compressible connecting piece 3 is arranged in the connecting groove 14, the compressible connecting piece 3 is in an X shape, the outer surface of the compressible connecting piece 3 is clamped with a connecting column 2, and the linking column 2 is fixed on the support frames 11, and when the two support frames 11 are compressed again, the compressible linking piece 3 can be inserted into the linking groove 14 outwards and limited by the linking column 2.

Furthermore, as shown in fig. 3, the connecting blocks 13 on the two supporting frames 11 are distributed in a staggered manner, and the two rows of connecting blocks 13 are inserted into each other, so that the design not only meets the requirement that the two insulating sleeves 12 are compressible, but also prevents the corners of the fuel cell plate 6 from being clamped when being positioned.

Further, as shown in fig. 4-5, the compressible linking member 3 includes a main supporting plate 31, a through groove 32 is formed on the surface of the main supporting plate 31, three sub-plates 33 are integrally connected in the through groove 32, one sub-plate 33 is tilted to the upper left, the other two sub-plates 33 are tilted to the lower right, the main supporting plate 31 and the sub-plates 33 are distributed in an "X" shape, the sub-plates 33 can be two-segment type, three sub-plates 33 are stamped from one main supporting plate 31, and then the sub-plates 33 are bent as shown in fig. 5, the extension pieces are welded on the auxiliary plate 33 to be parallel to the main supporting plate 31, the connecting grooves 14 are arranged in an inclined way, the main supporting plate 31 and the auxiliary plate 33 are inserted into the connecting groove 14, the main supporting plate 31 and the auxiliary plate 33 at the top are fixedly connected with the connecting groove 14 in the top supporting frame 11, and the main supporting plate 31 and the auxiliary plate 33 at the bottom are telescopically connected with the connecting groove 14 in the bottom supporting frame 11.

Further, as shown in fig. 2, 4 and 5, a clamping groove 34 is formed in the main support plate 31, the clamping groove 34 is formed in the position, opposite to the clamping groove 34, of the subplate 33, one face of the joining column 2 is in an inverted tooth shape, the joining column 2 penetrates through the clamping groove 34 and is clamped with the clamping groove 34, when the compressible joining member 3 is compressed, the main support plate 31 and the subplate 33 can be expanded outwards, the joining column 2 penetrates through the clamping groove 34, the inverted tooth-shaped design of the joining column 2 can clamp the clamping groove 34, and the L-shaped reference positioning member 1 cannot rebound after being compressed.

Further, as shown in fig. 1, the bottom of the L-shaped reference positioning piece 1 is fixed with a middle insulating block 4, the supporting rods 5 are uniformly distributed in the middle insulating block 4, the number of the L-shaped reference positioning pieces 1 is two, the two L-shaped reference positioning pieces 1 are distributed on two sides of the middle insulating block 4, two ends of each supporting rod 5 are respectively connected and fixed with the two supporting frames 11, the middle insulating block 4 is connected and fixed with the insulating sleeve 12, the compression stroke of the battery stack is limited, therefore, only the compressible L-shaped reference positioning pieces 1 are required to be installed at two ends of the middle insulating block 4, and the middle part is replaced by the middle insulating block 4 and the supporting rods 5.

Example two:

Further, as shown in fig. 4-5, the compressible linking member 3 includes a main supporting plate 31, a through slot 32 is formed in the surface of the main supporting plate 31, three sub-plates 33 are integrally connected in the through slot 32, one sub-plate 33 tilts upward to the left, the other two sub-plates 33 tilt downward to the right, the main supporting plate 31 and the sub-plates 33 are distributed in an "X" shape, the sub-plates 33 can be two-segment, three sub-plates 33 are stamped from one main supporting plate 31, and then the sub-plates 33 are bent as shown in fig. 7, so that the processing is more convenient, the linking slots 14 are arranged in an inclined manner, the main supporting plate 31 and the sub-plates 33 are inserted into the linking slots 14, the main supporting plate 31 and the sub-plates 33 at the top are fixedly connected to the linking slots 14 in the top supporting frame 11, and the main supporting plate 31 and the sub-plates 33 at the bottom are telescopically connected to the linking slots 14 in the bottom supporting frame 11.

Further, as shown in fig. 6, it is different from the first embodiment in that: need not well insulating block 4 and bracing piece 5 and link up as the middle part, directly with the 1 end to end of a plurality of groups L shape reference positioning piece, this kind of design, it is big to be fit for the stack compression process, can increase and decrease L shape reference positioning piece 1 according to 6 numbers of piles of fuel cell board at will, uses more in a flexible way.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A benchmark plug-in components for fuel cell board short-circuit protection, including L shape benchmark setting element (1) and fuel cell board (6), the corner of fuel cell board (6) all is provided with L shape benchmark setting element (1), its characterized in that: l shape reference positioning piece (1) is "L" shape structure, the both sides length of L shape reference positioning piece (1) equals, fuel cell board (6) cooperation a pair of L shape reference positioning piece (1) use, and is a pair of L shape reference positioning piece (1) is the diagonal distribution of fuel cell board (6), L shape reference positioning piece (1) is made by support frame (11) and insulating bush (12) combination, and every L shape reference positioning piece (1) comprises two support frames (11) coincide, the periphery parcel of support frame (11) has insulating bush (12), the upper and lower surface of insulating bush (12) all evenly is fixed with links up piece (13), linking groove (14) has been seted up to the lower surface of support frame (11), and links up and be provided with compressible linking piece (3) in groove (14), compressible linking piece (3) are "X" shape, the outer surface block of compressible linking piece (3) has linking post (2), and links up post (2) and fix on support frame (11), is sandwich structure design with L shape benchmark setting element (1) and compressible linking piece (3), links up through compressible linking piece (3) between per two support frames (11), and compressible linking piece (3) are inserted and are closed in linking groove (14), when the battery pile is compressed and sealed, two support frames (11) also can be compressed, the bottom of compressible linking piece (3) can insert in linking groove (14) and fixed through linking post (2) block.

2. The datum insert for fuel cell plate shorting protection according to claim 1, wherein: the connecting blocks (13) on the two insulating sleeves (12) are distributed in a staggered manner, and the two rows of connecting blocks (13) are mutually inserted.

3. The datum insert for fuel cell plate shorting protection according to claim 1, wherein: compressible linking piece (3) include main tributary fagging (31), logical groove (32) have been seted up on the surface of main tributary fagging (31), it is connected with subplate (33) to lead to the integration in groove (32), the quantity of subplate (33) is three, one subplate (33) upper left perk, another two subplate (33) below right perk, main tributary fagging (31) and subplate (33) are "X" shape and distribute.

4. The datum insert for fuel cell plate shorting protection according to claim 3, wherein: the main support plate (31) is provided with a clamping groove (34), and the auxiliary plate (33) and the clamping groove (34) on the main support plate (31) are both provided with clamping grooves (34) at opposite positions.

5. The datum insert for fuel cell plate shorting protection according to claim 4, wherein: one surface of the connecting column (2) is in an inverted tooth shape, and the connecting column (2) penetrates through the clamping groove (34) and is clamped with the clamping groove (34).

6. The datum insert for fuel cell plate shorting protection according to claim 1, wherein: the jointing grooves (14) are obliquely arranged, and the main supporting plate (31) and the auxiliary plate (33) are inserted into the jointing grooves (14).

7. The datum insert for fuel cell plate shorting protection according to claim 1, wherein: the bottom of L shape benchmark setting element (1) is fixed with well collets (4), the inside evenly distributed of well collets (4) has bracing piece (5), the quantity of L shape benchmark setting element (1) is two, two L shape benchmark setting element (1) distributes in the both sides of well collets (4), and the both ends of bracing piece (5) are connected fixedly with support frame (11) on two L shape benchmark setting elements (1) respectively, well collets (4) are connected fixedly with insulating cover (12).