阅读说明：本技术 燃料电池装配构件、燃料电池堆栈和燃料电池装配方法 (Fuel cell mounting structure, fuel cell stack and fuel cell assembly method ) 是由 李伟 胡玉凤 于 2019-09-27 设计创作，主要内容包括：本申请公开了一种燃料电池装配构件、燃料电池堆栈和燃料电池装配方法。燃料电池装配构件包括：两块端板,两块端板分别用于装配在单电池堆叠体堆叠方向的两端；以及至少两个抱卡,分列于端板两侧；抱卡包括抱卡本体和设置在抱卡本体两端的卡接部；同一个抱卡上的两个卡接部分别与两块端板卡接配合。端板与抱卡啮合构成的压紧机构结构简单、构成紧凑,端板与抱卡自行匹配锁止,无需第三机构提供锁止功能。(This application discloses a kind of fuel cell mounting structure, fuel cell stack and fuel cell assembly methods.Fuel cell mounting structure includes: two end plates, and two end plates are respectively used to be assemblied in the both ends of cell stack stack stacking direction；And at least two holding cards, it is respectively in end plate two sides；Holding card includes holding card ontology and the clamping portion that holding card ontology both ends are arranged in；Two clamping portions in the same holding card are engaged by clamping with two end plates respectively.The hold-down mechanism structure that end plate engages composition with holding card is simple, it is compact to constitute, and end plate voluntarily matches locking with holding card, provides latch functions without third mechanism.)

1. a kind of fuel cell mounting structure characterized by comprising

Two end plates, two pieces of end plates are respectively used to be assemblied in the both ends of cell stack stack stacking direction；

At least two holding cards are respectively in the end plate two sides；The holding card includes holding card ontology and is arranged at holding card ontology both ends Clamping portion；Two clamping portions in the same holding card are engaged by clamping with two pieces of end plates respectively.

2. fuel cell mounting structure according to claim 1, which is characterized in that the clamping portion includes shoulder；It is described Shoulder is in be open towards the U-shaped of the end plate direction；The end plate is equipped with the support portion for being engaged by clamping with the shoulder； The support portion is in the form of slot, and cross sectional shape is corresponding to institute's shoulder.

3. fuel cell mounting structure according to claim 2, which is characterized in that the shoulder close to opening end position to It protrudes to form protrusion in holding card ontology side；The recessed formation locking part in support portion corresponding position is used for and the protrusion Cooperate locking.

4. fuel cell mounting structure according to claim 2, which is characterized in that the shoulder is with holding card ontology by leading Enter portion's connection；End plate side corresponding position is equipped with the gap that can accommodate the introduction part.

5. fuel cell mounting structure according to claim 2, which is characterized in that be connected to each of described end plate the same side A holding card is mutually indepedent, or is connected with each other by the adjacent holding card ontology.

6. fuel cell mounting structure according to claim 1, which is characterized in that the clamping portion includes snap arm；It is described Snap arm extends perpendicular to the holding card ontology, Xiang Suoshu end plate side；The end plate is equipped with and is engaged by clamping with the snap arm Snap arm slot.

7. fuel cell mounting structure according to claim 1, which is characterized in that the end plate is close to cell stack stack Surface be plane or convex surface.

8. fuel cell mounting structure according to claim 1, which is characterized in that the holding card is close to the cell stack The side of stack is coated with insulating coating.

9. a kind of fuel cell stack, which is characterized in that including cell stack stack and the described in any item combustions of claim 1-8 Expect battery mounting structure；Two pieces of end plates are pressed on the cell stack stack along the both ends of stacking direction respectively；Each institute It states holding card and is connected to two pieces of end plate two sides.

10. a kind of fuel cell assembly method, which comprises the following steps:

Cell stack stack and the described in any item fuel cell mounting structures of claim 1-8 are provided；

It is stacked neatly according to end plate-cell stack stack-end plate location order；

It compresses the cell stack stack to less than specifies Spacing, the holding card is mounted on the end plate two sides；

Pressing force is discharged, cell stack stack rebounds to specifying Spacing, while end plate engages completely with holding card, completion fuel cell Assembly.

Technical field

The application belongs to Proton Exchange Membrane Fuel Cells technical field (PEMFC, Proton Exchange Membrane Fuel Cell), and in particular to a kind of fuel cell mounting structure, fuel cell stack and fuel cell assembly method.

Background technique

Fuel cell is a kind of energy conversion device, will be stored in fuel gas and oxidant gas by electrochemical reaction In chemical energy be converted into electric energy, have energy conversion efficiency high, advantage low in the pollution of the environment, before having a wide range of applications Scape.

Usual fuel cell has the stacked structure for being laminated multiple monocells, and industry system is called fuel cell pack Stack.Each monocell has a following construction: membrane electrode (MEA:Membrane Electrode Assembly) and bipolar plates (BP: Bipolar Plate), it is formed with therebetween for the gas flow along membrane electrode surface supply response gas.Reaction Gas flows through the surface of membrane electrode from the supply manifold for the reaction gas that bipolar plates outer edge is arranged in, towards setting with supply Discharge manifold flow on the opposite outer edge in the outer edge of manifold.To the anode electrode surface supply for constituting fuel cell MEA Fuel gas simultaneously supplies oxidant gas to another party's cathode electrode surface and generates electrochemical reaction, thus generates electricity, Working principle is as follows:

Anode: H₂→2H⁺+2e^-

Cathode: 1/2O₂+H⁺+2e^-→H₂O

Cell reaction: H₂+1/2O₂→H₂O

Fuel cell can be divided into the cooling fuel cell of air (the air-cooled fuel electricity of hereinafter referred due to the difference of the type of cooling Pond) and the cooling fuel cell of liquid, because of the advantages that air-cooled fuel cell structure is simple and compact, power supply is swift in response, by It is widely used in the scenes such as backup power source, unmanned plane power battery, fork truck power battery, portable power.

Portable fuel cell system obtains market and widely approves at present.Its mass energy density and volume energy density It has a clear superiority compared to lithium battery, under equal quality and volume, portable fuel cell system can make electronic consumer products Has longer cruise duration.Portable fuel cell system is needed using overall compact fuel cell stack, therefore designs one Compact, simple, reliable, the inexpensive fuel cell assembling structure of kind is portable fuel cell system widespread adoption Premise.

Patent publication No are as follows: the patent of invention of CN104471775A discloses a kind of compression system for fuel cell unit The compressibility of system, description includes: end plate, unsymmetrical leaf spring and tensioning member.Its described compressibility is complex, end plate Clamping positioning need unsymmetrical leaf spring and strainer to cooperate to complete, required structural member quantity is more, and compressibility design is complicated, Higher cost.

Patent publication No are as follows: the patent of invention of CN104995781A discloses a kind of fuel-cell stack assembly and assembling side The compressibility of method, description includes: the first packing component, the second packing component and two locking components.Its described compression system System needs two locking components by the first packing component and the second packing component locking, and the compression that could complete pile component is tight Gu.Its described all sheet metal structural of compressibility component, locking component can be displaced on effective locking storehouse stacking direction, but It is limited in the displacement limitation capability of storehouse stacking direction for normal direction.

Summary of the invention

In view of drawbacks described above in the prior art or deficiency, it is intended to provide a kind of fuel cell mounting structure, fuel cell Storehouse and fuel cell assembly method.

The application provides a kind of fuel cell mounting structure, comprising:

Two end plates, two end plates are respectively used to be assemblied in the both ends of cell stack stack stacking direction；And

At least two holding cards are respectively in end plate two sides；Holding card includes holding card ontology and the card that holding card ontology both ends are arranged in Socket part；Two clamping portions in the same holding card are engaged by clamping with two end plates respectively.

The hold-down mechanism structure that end plate engages composition with holding card is simple, it is compact to constitute, and end plate voluntarily matches locking with holding card, Latch functions are provided without third mechanism.

Further, clamping portion includes shoulder；Shoulder is in be open towards the U-shaped of end plate direction；End plate be equipped with for The support portion that shoulder is engaged by clamping；Support portion is in the form of slot, and cross sectional shape is corresponding to the shoulder.End plate support portion and holding card shoulder Contact, effect are limitation end plates because generating displacement with reversed elastic force under cell stack stack compressive state.Holding card shoulder Portion can have more wide in range contact with end plate support portion, more uniform pressing force is provided for end plate to end plate internal stretch Distribution.

Further, shoulder protrudes to form protrusion close to opening end position to holding card ontology side；Support portion corresponding position Recessed formation locking part, for cooperating locking with protrusion.The end plate locking part is engaged with holding card protrusion, for prevent end plate with Holding card is because normal direction generates displacement in monocell stacking direction, and then end plate and holding card is made to be disengaged from state.

Further, shoulder is connect with holding card ontology by introduction part；End plate side corresponding position is equipped with to accommodate and lead Enter the gap in portion, referred to as guide part.The end plate guide part and holding card introduction part cooperate, and fuel cell hold-down mechanism is made to facilitate group Dress, while limiting end plate and holding card generation and generating displacement along the normal direction of monocell stacking direction.

Further, each holding card for being connected to end plate the same side is mutually indepedent, or passes through adjacent holding card ontology phase It connects.One, two or more holding cards can be set in the size of fuel cell storehouse, end plate the same side；When When two or more holding cards are arranged in end plate the same side, each holding card can be independent, can also be connected with each other.

Further, clamping portion includes snap arm；Snap arm extends perpendicular to holding card ontology to end plate side；End plate is equipped with The snap arm slot being engaged by clamping with snap arm.Only setting snap arm is the relatively simple holding card of structure, Ke Yidan as the holding card of clamping portion It solely uses, multiple can also be used in combination, can also be used in combination with the holding card for being equipped with shoulder.

Further, end plate is plane or convex surface close to the surface of cell stack stack.End plate, which bears pressing force, to be made It generates the end plate medial surface shape coupling that elastic deformation is contacted with cell stack stack, it is therefore an objective to can be cell stack stack The pressing force being evenly distributed is provided.

Further, holding card is coated with insulating coating close to the side of cell stack stack.Insulating coating can be engineering The insulating materials such as plastics, resin fibre, bakelite, rubber, such as polytetrafluoroethylene (PTFE).

Second aspect, the application also provide a kind of fuel cell stack, including cell stack stack and above-mentioned fuel electricity Pond mounting structure；Two pieces of end plates are pressed on the cell stack stack along the both ends of stacking direction respectively；Each described armful It is connected to two pieces of end plate two sides.

The third aspect, the application also provide a kind of fuel cell assembly method, comprising the following steps:

Cell stack stack and above-mentioned fuel cell mounting structure are provided；

It is stacked neatly according to end plate-cell stack stack-end plate location order；

It compresses the cell stack stack to less than specifies Spacing, the holding card is mounted on the end plate two sides；

Pressing force is discharged, cell stack stack rebounds to specifying Spacing, while end plate engages completely with holding card, completion fuel The assembly of battery.

The application has the advantages and positive effects of: the end plate of the application engages the hold-down mechanism structure constituted with holding card Simply, composition is compact, and end plate voluntarily matches locking with holding card, provides latch functions without third mechanism.In a preferred approach, it holds Plate and holding card are provided with the locking and limit function of three-dimensional, keep fuel cell stack structure firm firm；End plate can lead to It crosses injection technique to be made, holding card can be made up of metal plate punching technique, and both the above technique is mature and large-scale application Technique, so that production cost reduces.

The technical issues of in addition to the application described above solution, constitutes the technical characteristic of technical solution and by these Except advantage brought by the technical characteristic of technical solution, wrapped in other technologies problem that the application can solve, technical solution Advantage brought by the other technical characteristics contained and these technical characteristics, makees further details of hereinafter in conjunction with attached drawing Explanation.

Detailed description of the invention

By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other Feature, objects and advantages will become more apparent upon:

Fig. 1 is the approximate stereogram for the fuel cell stack that the embodiment of the present application 1 provides；

Fig. 2 is the top view for the fuel cell stack that the embodiment of the present application 1 provides；

Fig. 3 is the approximate stereogram for the fuel cell mounting structure that the embodiment of the present application 1 provides；

Fig. 4 is the general perspective for the fuel cell mounting structure that the embodiment of the present application 1 provides；

Fig. 5 is the general perspective of first end end plate in the fuel cell mounting structure of the offer of the embodiment of the present application 1；

Fig. 6 is the approximate stereogram of holding card in the fuel cell mounting structure of the offer of the embodiment of the present application 1；

Fig. 7 is the enlarged cross-sectional view for indicating the section R-R in Fig. 2；

Fig. 8 is the fuel cell mounting structure explosive view that the embodiment of the present application 2 provides；

Fig. 9 is the fuel cell mounting structure explosive view that the embodiment of the present application 3 provides；

Figure 10 is the fuel cell mounting structure explosive view that the embodiment of the present application 4 provides；

Figure 11 is the fuel cell mounting structure explosive view that the embodiment of the present application 5 provides.

Label declaration:

10- fuel cell stack

12- first end collector plate

14- second end collector plate

16- monocell

20- fuel cell mounting structure

22- first end end plate

24- second end end plate

26- holding card

26 '-combination holding cards

26 "-simple holding cards

31- support portion

32- first end end plate lateral surface

33- locking part

34- first end end plate medial surface

35- guide part

36- second end end plate lateral surface

38- second end end plate medial surface

39- snap arm slot

41- shoulder

42- holding card lateral surface

43- protrusion

44- holding card medial surface

45- introduction part

46- snap arm

50- cell stack stack

Specific embodiment

The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to Convenient for description, part relevant to invention is illustrated only in attached drawing.

It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.