CN212380450U - Packaging structure of integrated fuel cell stack - Google Patents

Abstract

The utility model provides an integral type fuel cell stack's packaging structure, fuel cell stack's packaging structure includes: the reactor core comprises a front end plate, an upper shell, a lower shell, a reactor core structure and a rear cover plate. The upper end plate is provided with a common pipeline which is communicated with the reactor core of the electric reactor to form a flow passage for providing reaction gas and cooling liquid. The upper shell and the lower shell are provided with anti-collapse waist structural components tightly attached to the reactor core. Integral type fuel cell pile's packaging structure improved fuel cell pile's performance greatly, effectively reduced fuel cell pile's volume and weight, made fuel cell's the holistic integrated level of pile improve greatly, simultaneously, further promoted fuel cell pile's anti-vibration performance and insulating nature. Meanwhile, the integrated packaging structure can realize rapid assembly and assembly line operation.

Description

Packaging structure of integrated fuel cell stack

Technical Field

The utility model relates to a fuel cell encapsulates technical field, in particular to packaging structure of integral type fuel cell pile.

Background

The fuel cell stack is formed by end plates with holding and compressing functions on two sides, insulating separators, current leading-out bodies, a series of single cells stacked layer by layer along the normal direction of a single cell reaction surface and a packaging structure. The electric pile uses hydrogen fuel and air as reaction gas, generates electric energy through electrochemical action, and supplies power to a load through the conduction of a current lead-out body. When the stack is used, its structural stability is affected by vibration and shock on the one hand and by itself on the other hand, and since the fuel cell is limited by the fuel loading, it is generally bulky.

Chinese patent (publication No. CN106450372A) discloses a stack fastening structure with an external positioning function: with outer locating piece fastening at the side encapsulation board back, then fasten with the pile again, its not enough lies in: 1. the split type encapsulation can not realize sealing and can not reach the protection grade standard of the vehicle fuel cell; 2. the fastening direction of the packaging plate and the galvanic pile end plate is the normal direction of the galvanic pile, after fastening, the assembly tolerance between the positioning block and the lateral surface of the galvanic pile body is difficult to guarantee, and therefore the positioning effect on the galvanic pile cannot be realized

Chinese patent (publication No. CN103633358A) discloses a high integration level metal plate fuel cell stack: the split type electric pile packaging structure has the advantages that a side packaging plate plays a role in fastening an electric pile, and the split type electric pile packaging structure has the defects that the split type packaging structure cannot realize sealing, cannot reach the protection grade standard of an automotive fuel cell, and cannot ensure the assembly size deviation; on the other hand, the packaging structure is not provided with a positioning structure of the galvanic pile, so that the galvanic pile is easy to leak and fail due to waist collapse caused by vibration under the conditions of vehicle use or vibration.

Chinese patent (publication No. CN110098414A) discloses a fuel cell bipolar plate and a fuel cell stack packaging structure, which solves the technical problems of the existing packaging structure, such as large number of parts, failure of stack due to vibration deformation, more sealing surfaces or poor cross sealing effect of the sealing surfaces, but has a complex structure, large volume and weight, and is not suitable for the core structure of different stacking modes, and is not easy to realize quick installation.

Therefore, a fuel cell stack packaging structure which has strong shock resistance, good insulation performance and compact volume and weight and can package reactor core structures in different stacking modes and a simple and rapid assembling method are lacked.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, the present invention discloses an integrated fuel cell stack package structure, and the technical solution of the present invention is implemented as follows:

a packaging structure of an integrated fuel cell stack comprises an upper shell, a lower shell, a front end plate, a rear cover plate and a reactor core structure; the front end plate is provided with a gas port and a flow passage structure; the front end plate is positioned right in front of the reactor core structure and fixedly connected with the upper shell and the lower shell; the upper shell is positioned right above the reactor core structure and fixedly connected with the lower shell, the front end plate and the rear cover plate; the lower shell is positioned right below the reactor core structure; the rear cover plate is positioned right behind the reactor core structure and fixedly connected with the upper shell and the lower shell; the reactor core structure is wrapped with an insulating guard plate; the upper shell and/or the lower shell and/or the front end plate and/or the rear cover plate are/is provided with a waist collapse prevention structural component; the anti-collapse waist structural component is tightly attached to the reactor core structure; the upper housing, the lower housing, the front end plate, and the back cover plate enclose the core structure.

Preferably, the waist-collapse prevention structural member is a high-strength insulating plastic with low water absorption rate.

Preferably, a rubber pad is arranged on the anti-collapse waist structure component, and the rubber pad is directly contacted with the core structure.

Preferably, the upper shell and/or the lower shell and/or the front end plate and/or the rear cover plate are/is provided with an inspection part.

Preferably, the inspection portion is provided with an inspection connector module housing for accommodating the inspection connector module.

Preferably, a maintenance opening is arranged on the upper shell and/or the lower shell and/or the front end plate and/or the rear cover plate.

Preferably, a purge air inlet and a purge flow passage are arranged on the upper shell and/or the lower shell and/or the front end plate and/or the rear cover plate.

Preferably, the upper and lower casings are internally provided to a purge flow passage.

Preferably, the upper casing and/or the lower casing and/or the front end plate and/or the rear cover plate are further provided with a drain hole and a drain groove.

Preferably, the lower case and/or the lower case is provided with a surrounding structure where the rear cover plate is connected.

By implementing the technical scheme of the utility model, the technical problems of complex assembly structure and large volume and weight in the prior art can be solved; implement the technical scheme of the utility model, through the packaging structure design of integration, it is strong to realize anti-seismic performance, and insulating nature is good, and volume and weight are retrencied, can realize the encapsulation to the reactor core structure of different stacking modes, quick assembly's simultaneously technical effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a disassembled view of a package structure of an integrated fuel cell stack;

FIG. 2 is a schematic diagram of the outside of the front end plate structure of the integrated fuel cell stack package;

FIG. 3 is a schematic view of the inside of the front end plate structure of the integrated fuel cell stack package structure;

FIG. 4 is a schematic diagram of the outer side of the upper housing structure of the integrated fuel cell stack package;

FIG. 5 is a schematic view of the inside of the upper housing structure of the integrated fuel cell stack package;

fig. 6 is a view illustrating a lower case structure of a packaging structure of an integrated fuel cell stack;

FIG. 7 is a schematic diagram of the inspection portion of the integrated fuel cell stack package;

fig. 8 is an assembled structural view of a packaging structure of an integrated fuel cell stack.

In the above drawings, the reference numerals denote:

1. an upper housing;

1-1, maintaining a port cover plate; 1-2, a routing inspection port; 1-3, reinforcing rib structure; 1-4, an upper shell waist-collapse-prevention structural component;

2. a lower housing;

2-1, a lower shell waist-collapse-prevention structural component;

2-2, a lower shell surrounding structure;

3. a front end plate;

3-1, air port; 3-2, a flow passage structure;

4. a rear cover plate;

5. a core structure;

6. a routing inspection part;

6-1, and inspecting the housing of the connector module.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It will be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; 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 this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In one embodiment, as shown in fig. 1 to 8 of the accompanying drawings, an integrated fuel cell stack packaging structure includes an upper casing (1), a lower casing (2), a front end plate (3), a back cover plate (4), and a core structure (5); the front end plate (3) is provided with an air port (3-1) and a flow passage structure (3-2); the front end plate (3) is positioned right ahead of the reactor core structure (5) and fixedly connected with the upper shell (1) and the lower shell (2); the upper shell (1) is positioned right above the reactor core structure (5) and is fixedly connected with the lower shell (2), the front end plate (3) and the rear cover plate (4); the lower shell (2) is positioned right below the reactor core structure (5); the rear cover plate (4) is positioned right behind the reactor core structure (5) and fixedly connected with the upper shell (1) and the lower shell (2); the reactor core structure (5) is wrapped with an insulating guard plate; the upper shell (1) and the lower shell (2) are respectively provided with an upper shell waist-collapse-prevention structural component (1-4) and a lower shell waist-collapse-prevention structural component (2-1); the upper shell anti-collapse waist structural component (1-4) and the lower shell anti-collapse waist structural component (2-1) are tightly attached to the reactor core structure (5); the upper shell (1), the lower shell (2), the front end plate (3) and the rear cover plate (4) enclose a reactor core structure (5); the inspection part (6) is arranged on the lower shell (2).

In this embodiment, the air port (3-1) of the front end plate shown in fig. 2 and the flow channel structure (3-2) shown in fig. 3 are used as a hydrogen inlet/outlet, an air inlet/outlet, a coolant inlet/outlet, and a hydrogen circulation outlet, and in this embodiment, a sealing groove structure is provided, so that an independent air port pipeline is not introduced to connect the encapsulated core structure (5). As shown in the attached figure 5, the upper shell waist-collapse preventing structural component (1-4) is arranged on the reinforcing rib structure (1-3) and has the functions of enhancing the strength of the upper shell and limiting the upper shell waist-collapse preventing structural component (1-4) of the part. The lower shell (2) is of a C-shaped groove structure, so that left and right side packaging materials in six packaging materials from right front, rear, left, right, upper and lower sides in a common packaging structure are omitted, the installation can be accelerated, and good consistency and sealing performance are provided. The upper shell waist-collapse-prevention structural component (1-4) is tightly attached to the lower shell waist-collapse-prevention structural component (2-1); the upper shell (1) is provided with a maintenance port cover plate (1-1) which can be used for repairing the interior of the reactor core structure (5); the upper shell waist-collapse-prevention structural component (1-4) and the lower shell waist-collapse-prevention structural component (2-1) are made of high-strength insulating plastics with low water absorption rate, and play a role in preventing the reactor core from collapsing waist in a matching mode; the structure greatly improves the anti-vibration performance of the electric pile and prevents the deformation of the reactor core structure (5); as shown in fig. 7, the inspection unit (6) is provided with an inspection connector module housing (6-1).

In summary,

in a preferred embodiment, the waist-collapse resistant structural member is a high strength insulating plastic with low water absorption. The effect of design like this can let prevent that waist structural component can have better structural stability and structural strength, and is better to the fixed effect of core structure (5).

In a preferred embodiment, the anti-collapse waist structural component is provided with a rubber pad, and the rubber pad is directly contacted with the core structure. The rubber pad can play the cushioning effect, and guarantees the inseparable laminating of waist part and the reactor core of preventing collapsing, and the rubber pad can the gap between the filled structure.

In a preferred embodiment, the upper shell and/or the lower shell and/or the front end plate and/or the rear cover plate are/is provided with an inspection part. The design and the installation of the inspection part can be adjusted according to the actual design and the application of the fuel cell, and the inspection part can accommodate the fuel cell inspection module assembly to provide the inspection function.

In a preferred embodiment, the inspection portion is provided with a connector module housing for receiving the inspection connector module. Patrol and examine connector module housing and can patrol and examine module component to the battery and protect, can protect the volume of reducing to the structure of integral type simultaneously.

In a preferred embodiment, the upper and/or lower housing and/or the front and/or rear cover plate is provided with a service opening. The design and installation of the service hatches can be adjusted to the actual design and use of the fuel cell, with the intention of performing maintenance on the fuel cell.

In a preferred embodiment, the upper shell and/or the lower shell and/or the front end plate and/or the rear cover plate are provided with a purging inlet and a purging flow passage. The deformation of the fuel cell caused by temperature can be adjusted by setting the purging air inlet and the purging flow channel, and meanwhile, the temperature of the reactor core structure can be regulated and controlled by the purging air inlet and the purging flow channel, so that the safety of the fuel cell is improved.

In a preferred embodiment, the upper casing and/or the lower casing and/or the front end plate and/or the rear cover plate are further provided with a drain hole and a drain groove. The design and installation of the dredging structure of the drain hole and the drain groove can be adjusted according to the actual design and the application of the fuel cell, so that accumulated water possibly generated in the fuel cell can be dredged.

In a preferred embodiment, the lower housing and/or the lower housing is provided with a surrounding structure where the back cover plate is attached. As shown in fig. 6, the surrounding structure (2-2) of the lower shell can facilitate the fixation of the core structure, and the core structure can be clamped before the back cover plate is not installed, so that the installation can be facilitated, and the displacement of the core structure can be prevented.

It should be understood that the above description is only exemplary of the present invention, and is not intended to limit the present invention, and that any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.

Claims (9)

1. The utility model provides an encapsulation structure of integral type fuel cell pile which characterized in that: the reactor core structure comprises an upper shell, a lower shell, a front end plate, a rear cover plate and a reactor core structure; the front end plate is provided with a gas port and a flow passage structure; the front end plate is positioned right in front of the reactor core structure and fixedly connected with the upper shell and the lower shell; the upper shell is positioned right above the reactor core structure and fixedly connected with the lower shell, the front end plate and the rear cover plate; the lower shell is positioned right below the reactor core structure; the rear cover plate is positioned right behind the reactor core structure and fixedly connected with the upper shell and the lower shell; the reactor core structure is wrapped with an insulating guard plate; the upper shell and/or the lower shell and/or the front end plate and/or the rear cover plate are/is provided with a waist collapse prevention structural component; the anti-collapse waist structural component is tightly attached to the reactor core structure; the upper housing, the lower housing, the front end plate, and the back cover plate enclose the core structure.

2. The integrated fuel cell stack packaging structure according to claim 1, wherein: the waist collapse prevention structural component is made of high-strength insulating plastic with low water absorption.

3. The integrated fuel cell stack packaging structure according to claim 1, wherein: the anti-collapse waist structure component is provided with a rubber pad, and the rubber pad is directly contacted with the reactor core structure.

4. The integrated fuel cell stack packaging structure according to claim 1, wherein: the upper shell and/or the lower shell and/or the front end plate and/or the rear cover plate are/is provided with an inspection part.

5. The integrated fuel cell stack packaging structure according to claim 4, wherein: the inspection part is provided with an inspection connector module housing for accommodating the inspection connector module.

6. The integrated fuel cell stack packaging structure according to claim 1, wherein: and a maintenance opening is formed in the upper shell and/or the lower shell and/or the front end plate and/or the rear cover plate.

7. The integrated fuel cell stack packaging structure according to claim 1, wherein: and a sweeping air inlet and a sweeping flow passage are arranged on the upper shell and/or the lower shell and/or the front end plate and/or the rear cover plate.

8. The integrated fuel cell stack packaging structure according to claim 1, wherein: the upper shell and/or the lower shell and/or the front end plate and/or the rear cover plate are/is further provided with a water drainage hole and a water drainage groove.

9. The integrated fuel cell stack packaging structure according to claim 1, wherein: the lower shell and/or the lower shell is/are provided with a surrounding structure at the position where the lower shell is connected with the rear cover plate.

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