阅读说明：本技术 一种一体式燃料电池电堆的封装结构及其装配方法 (Packaging structure of integrated fuel cell stack and assembly method thereof ) 是由 刘晴晴 赵树钊 程旌德 耿洪泉 梁鹏 于 2020-07-01 设计创作，主要内容包括：本发明提供了一种一体式燃料电池电堆的封装结构及其装配方法,所述燃料电池电堆的封装结构包括：前端板,上壳体,下壳体,堆芯结构和后盖板。所述上端板设有公共管路与电堆堆芯联通,形成提供反应气体及冷却液流道。所述上壳体,下壳体设有与堆芯贴紧的防塌腰结构部件。本发明所述的一体式燃料电池电堆的封装结构大大提高了燃料电池电堆的性能,有效降低了燃料电池电堆的体积和重量,使燃料电池的堆整体的集成度大大提高,同时,进一步地提升了燃料电池电堆的抗振动性能以及绝缘性。同时这种一体化的封装结构能够实现快速装配,实现流水线作业。(The invention provides a packaging structure of an integrated fuel cell stack and an assembling method thereof, wherein the packaging structure of the fuel cell stack comprises: 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. The packaging structure of the integrated fuel cell stack greatly improves the performance of the fuel cell stack, effectively reduces the volume and the weight of the fuel cell stack, greatly improves the integral integration level of the fuel cell stack, and further improves the vibration resistance and the insulativity of the fuel cell stack. Meanwhile, the integrated packaging structure can realize rapid assembly and assembly line operation.)

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.

10. An assembling method of a packaging structure of an integrated fuel cell stack is characterized in that: a packaging structure for assembling an integrated fuel cell stack according to any one of claims 1 to 9, comprising:

s1: placing the front end plate in a die of a pre-installed press floor, and positioning the front end plate by using a positioning rod and/or a positioning hole by adjusting the position of the front end plate;

s2: positioning and assembling the core structure through the positioning rod and/or the positioning hole;

s3: penetrating a top plate of a press through the positioning rod, and pressing down the reactor core structure and the front end plate through the top plate of the press; after reaching a preset pressing position, maintaining the position of a top plate of the press;

s4: mounting the waist-collapse preventing structural component on a component on which the waist-collapse preventing structural component is required to be mounted;

s5: removing part of the positioning rods, and installing the lower shell and the upper shell, wherein the reactor core structural part is completely accommodated in the upper shell and the lower shell; removing the rest of the positioning rods;

s6: lifting the top plate of the press, and installing the rear cover plate;

s7: other functional modules are installed to complete the assembly of the battery.

Technical Field

The invention relates to the technical field of fuel cell packaging, in particular to a packaging structure of an integrated fuel cell stack and an assembling method thereof.

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.

Disclosure of Invention

In order to solve the technical problem, the invention discloses a packaging structure of an integrated fuel cell stack and an assembly method thereof, and the technical scheme of the 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.

An assembling method of a packaging structure of an integrated fuel cell stack for assembling any one of the above-described integrated fuel cell stacks, comprising:

s1: placing the front end plate in a die of a pre-installed press floor, and positioning the front end plate by using a positioning rod and/or a positioning hole by adjusting the position of the front end plate;

s2: positioning and assembling the core structure through the positioning rod and/or the positioning hole;

s3: penetrating a top plate of a press through the positioning rod, and pressing down the reactor core structure and the front end plate through the top plate of the press; after reaching a preset pressing position, maintaining the position of a top plate of the press;

s4: mounting the waist-collapse preventing structural component on a component on which the waist-collapse preventing structural component is required to be mounted;

s5: removing part of the positioning rods, and installing the lower shell and the upper shell, wherein the reactor core structural part is completely accommodated in the upper shell and the lower shell; removing the rest of the positioning rods;

s6: lifting the top plate of the press, and installing the rear cover plate;

s7: other functional modules are installed to complete the assembly of the battery.

By implementing the technical scheme of the invention, the technical problems of complex assembly structure, large volume and heavy weight in the prior art can be solved; by implementing the technical scheme of the invention, through the integrated packaging structure design and the assembling method thereof, the reactor core structure has the advantages of strong earthquake resistance, good insulating property, compact volume and weight, capability of packaging reactor core structures in different stacking modes and quick assembly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 a schematic view of an assembled and completed structure of a package structure of an integrated fuel cell stack;

fig. 9 is an assembled state 1 of an assembling method of a packaging structure of an integrated fuel cell stack;

fig. 10 is an assembly state 2 of an assembly method 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, inspecting the housing of the connector module;

7. a press;

7-1, a press bottom plate; 7-2, a top plate of a press; 7-3, a positioning rod assembly.

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.

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.