CN214588937U - End plate embedding structure and fuel cell - Google Patents

Abstract

The utility model provides an end plate scarf joint structure and fuel cell relates to fuel cell technical field, the utility model provides an end plate scarf joint structure, include: end plates and injection molded parts; the end plate is provided with a first embedded part; the injection molding piece is connected with the end plate in an injection molding mode, and a second embedding part matched with the first embedding part is formed. The utility model provides an end plate scarf joint structure, the injection molding adopts injection moulding's mode to take shape, through the cooperation of first scarf joint portion and second scarf joint portion, and then avoids producing the clearance between end plate and the injection molding, has simplified the process steps, has improved machining efficiency.

Description

End plate embedding structure and fuel cell

Technical Field

The utility model belongs to the technical field of the fuel cell technique and specifically relates to an end plate scarf joint structure and fuel cell are related to.

Background

The fuel cell stack adopts a laminated structure, the fuel cell stack is clamped by a pair of end plates, and the plastic insulating part is blocked between the end plates and the conductive device, so that the metal end plates and the conductive device are prevented from being conducted. When the metal end plate of the battery is embedded and connected with the plastic, the metal end plate and the plastic can be fixedly bonded by arranging the grooves and the glue overflow grooves and filling glue between the metal and the plastic. However, the end plates are repeatedly expanded and contracted due to temperature changes during the use of the battery, and thus, a squeeze or a gap is easily generated between the end plates and the plastic member, thereby causing deterioration in the flatness of the plastic and even cracks in the plastic. In addition, in the process of alternating temperature, pressure and humidity, plastic warps, gaps are formed on the binding surfaces of the end plates and the plastic, and water vapor easily permeates into the gaps, so that the problems of insulation failure and poor sealing are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an end plate scarf joint structure and fuel cell to alleviate among the prior art technical problem in the easy clearance that forms of end plate and injection molding junction.

In a first aspect, the utility model provides an end plate scarf joint structure, include: end plates and injection molded parts;

the end plate is provided with a first embedded part;

the injection molding piece is connected with the end plate in an injection molding mode, and a second embedded part matched with the first embedded part is formed.

With reference to the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the second scarf joint portion includes: a first burring part and a first embedding part;

the injection molding piece is provided with a joint end face opposite to the end plate, and the joint end face, the first flanging part and the first embedding part are arranged in a surrounding mode to form a first embedding groove.

With reference to the first possible implementation manner of the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the first scarf joint portion includes: a second caulking groove and a first boss, the first boss being located between the second caulking groove and the joint end face;

the first lug boss is connected in the first caulking groove, and the first embedding part is connected in the second caulking groove.

With reference to the first possible implementation manner of the first aspect, the present invention provides a third possible implementation manner of the first aspect, wherein the second inserting portion further includes: a second burring section and a second embedding section;

the joint end face, the second flanging part and the second embedding part are arranged in a surrounding mode to form a third caulking groove, and the third caulking groove is opposite to the first caulking groove.

With reference to the third possible implementation manner of the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the first inserting portion further includes: a fourth caulking groove and a second boss, the second boss being located between the fourth caulking groove and the joint end face;

the second boss is connected in the third caulking groove, and the second embedding part is connected in the fourth caulking groove.

In combination with the third possible implementation manner of the first aspect, the utility model provides a fifth possible implementation manner of the first aspect, wherein, be equipped with embedded protrusion on the second embedding portion, the first scarf joint portion include with the embedded groove of embedded protrusion looks adaptation.

In combination with the first aspect, the present disclosure provides a sixth possible implementation of the first aspect, wherein the first scarf joint portion includes a first recessed portion, and the second scarf joint portion includes a first insertion portion that fits into the first recessed portion;

and/or the first engagement portion comprises a second insertion portion, and the second engagement portion comprises a second recess adapted to the second insertion portion.

In combination with the first aspect, the present invention provides a seventh possible implementation manner of the first aspect, wherein the first scarf joint portion includes a threaded hole, and the second scarf joint portion includes an embedded column matched with the threaded hole.

With reference to the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein one of the end plate and the injection molded part is provided with a mounting groove, and the other of the end plate and the injection molded part is mounted in the mounting groove;

the first scarf joint part comprises a notch, the notch is located on the end face, engaged with the injection molding part, of the end plate, and the second scarf joint part comprises an injection molding penetration part matched with the notch.

In a second aspect, the present invention provides a fuel cell including the end plate scarf joint structure provided in the first aspect.

The embodiment of the utility model provides a following beneficial effect has been brought: adopt to be equipped with first scarf joint portion on the end plate, the injection molding adopts injection moulding process mode and end plate joint to form the second scarf joint portion with first scarf joint portion looks adaptation, through first scarf joint portion and the cooperation of second scarf joint portion, thereby ensure that end plate and injection molding are connected closely, and then avoid producing the clearance between end plate and the injection molding. And the injection molding part is formed in an injection molding mode and is jointed with the end plate, so that a stable embedding structure is formed, the process steps are simplified, and the processing efficiency is improved.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other end plate engagement structures can be obtained according to the drawings without creative efforts.

Fig. 1 is a cross-sectional view of a first end plate engagement structure provided in an embodiment of the present invention;

fig. 2 is an exploded view of a first end plate engagement structure provided in an embodiment of the present invention;

fig. 3 is an exploded view of a second end plate engagement structure provided in accordance with an embodiment of the present invention;

fig. 4 is an exploded view of a third end plate engagement structure provided in accordance with an embodiment of the present invention;

fig. 5 is a cross-sectional view of a fourth end plate engagement structure provided in accordance with an embodiment of the present invention;

fig. 6 is a cross-sectional view of a fifth end plate engagement structure provided in the embodiment of the present invention;

fig. 7 is a cross-sectional view of a sixth end plate engagement structure according to an embodiment of the present invention;

fig. 8 is a schematic view of an end plate of a sixth end plate engagement structure according to an embodiment of the present invention.

Icon: 100-end plate; 101-mounting grooves; 110 — a first scarf joint; 111-a second caulking groove; 112-a first boss; 113-a fourth caulking groove; 114-a second boss; 115-inner embedded groove; 116-a first recess; 117-second insertion portion; 118-a threaded hole; 119-incision; 200-injection molding; 201-an engagement end face; 202-a first caulking groove; 203-a third caulking groove; 210-a second scarf joint; 211-a first flanging part; 212 — a first embedding portion; 213-a second cuff portion; 214-a second insert; 215-inset boss; 216-a first insert; 217-a second recess; 218-embedded columns; 219-injection moulding the penetration.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "physical quantity" in the formula, unless otherwise noted, is understood to mean a basic quantity of a basic unit of international system of units, or a derived quantity derived from a basic quantity by a mathematical operation such as multiplication, division, differentiation, or integration.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, 2, 3, 4, 5, 6, 7, and 8, an embodiment of the present invention provides an end plate engagement structure, including: end plate 100 and injection molded part 200;

the end plate 100 is provided with a first embedded part 110;

the injection-molded part 200 is coupled to the end plate 100 by injection molding and forms a second engagement portion 210 that is fitted to the first engagement portion 110.

Specifically, first scarf joint portion 110 can adopt the solid structure of card such as recess, lug, barb structure or spacing hole, carries out injection moulding on end plate 100 to form injection molding 200, and then can make injection molding 200 directly with the inseparable first joint of end plate 100 be in the same place, so need not to adopt joint sealant and fastener, can simplify the technology step, improved assembly machining efficiency. In addition, the injection molding part 200 forms the second embedded part 210 which can be tightly matched with the first embedded part 110 in the injection molding process, so that the tightness of the connection between the end plate 100 and the injection molding part 200 is improved, and the problem of generating a gap between the end plate 100 and the injection molding part 200 due to thermal expansion and cold contraction can be solved.

As shown in fig. 1 and 2, in the first embodiment, the second caulking section 210 includes: a first burring part 211 and a first embedding part 212; the injection-molded part 200 has an engagement end face 201 opposite the end plate 100, the engagement end face 201, the first flanging part 211 and the first embedding part 212 together enclosing a first embedding groove 202. The first caulking groove 202 is matched with the first caulking part 110, so that the joint area is increased, and the first caulking groove 202 has a limiting effect on the first caulking part 110, so that a gap between the end plate 100 and the injection molding part 200 on the joint end surface 201 can be avoided.

Further, the first fitting part 110 includes: a second caulking groove 111 and a first protruding portion 112, the first protruding portion 112 being located between the second caulking groove 111 and the joint end surface 201;

the first boss 112 is coupled in the first insertion groove 202, and the first insertion portion 212 is coupled in the second insertion groove 111.

The first protruding portion 112 is inserted into the first insertion groove 202, and the first insertion portion 212 is inserted into the second insertion groove 111, so that the end plate 100 is pulled towards the inside of the injection molded part 200, and a gap between the end plate 100 and the injection molded part 200 is avoided.

Further, the second fitting portion 210 further includes: a second burring part 213 and a second embedding part 214; the joint end surface 201, the second flanging part 213 and the second embedding part 214 are arranged together to form a third embedding groove 203, and the third embedding groove 203 is arranged opposite to the first embedding groove 202.

The first caulking portion 110 is fitted to the third caulking groove 203, thereby tightly coupling the end plate 100 with the injection molded part 200. Wherein, the first inserting part 110 further includes: a fourth caulking groove 113 and a second projection 114, the second projection 114 being located between the fourth caulking groove 113 and the joint end surface 201; the second boss 114 is coupled in the third insertion groove 203, and the second insertion portion 214 is coupled in the fourth insertion groove 113.

In particular, the second insert 214 abuts against the side of the second projection 114 facing away from the joint end surface 201, so that the end plate 100 is pulled towards the inside of the injection molded part 200, thereby avoiding a gap between the end plate 100 and the injection molded part 200. In order to prevent the second embedding portion 214 from being loosened from the fourth embedding groove 113, the second embedding portion 214 extends from the end connected with the second flanging portion 213 to the end away from the second flanging portion 213 in a direction approaching to the parallel joint end surface 201, so as to form a hook structure, so as to realize a pulling effect on the second protrusion portion 114. From the end connected to the second flanging portion 213 to the end facing away from the second flanging portion 213, the thickness of the second embedding portion 214 increases in size and forms an oblique angle α shown in fig. 1, thereby improving the tightness of the connection of the end plate 100 to the injection-molded part 200.

Further, the second insertion portion 214 is provided with an insertion protrusion 215, and the first insertion portion 110 includes an insertion groove 115 adapted to the insertion protrusion 215. Referring to fig. 1 and 2, the depth H of the second insertion portion 214 into the fourth insertion groove 113 is inserted into the insertion groove 115 via the insertion protrusion 215, so that the injection-molded part 200 is inserted to a depth H + H in a direction parallel to the joining end surface 201 with respect to the end plate 100, thereby further improving the joining stability.

As shown in fig. 3, the second embodiment is similar to the first embodiment, the embedded protrusion 215 is omitted from the second embedded portion 214, the embedded groove 115 is omitted from the fourth embedded groove 113, the first embedded portion 110 is half-wrapped by the second embedded portion 210, and the first embedded portion 110 is located between the first flanging portion 211 and the second flanging portion 213, and both the first embedded portion 212 and the second embedded portion 214 have a function of generating a pulling force on the end plate 100, so that the injection molded part 200 and the end plate 100 are tightly joined on the joint end surface 201.

In the third embodiment, as shown in fig. 4, the first caulking portion 110 includes a first recess portion 116, and the second caulking portion 210 includes a first insertion portion 216 adapted to the first recess portion 116; the first engaging portion 110 includes a second inserting portion 117, and the second engaging portion 210 includes a second recess 217 adapted to the second inserting portion 117. Therefore, the end plate 100 and the injection molding part 200 form a concave-convex structure matched with each other, the contact area of the joint part of the end plate 100 and the injection molding part 200 is further increased, and the joint stability is improved.

In the fourth embodiment, as shown in fig. 5, one of the end plate 100 and the injection molded part 200 is provided with a first recess 116, and the other of the end plate 100 and the injection molded part 200 is configured as a first insert part 216, and the first recess 116 is engaged with the first insert part 216, so that the contact area of the joint portion is increased, and the joint stability is improved.

In a fifth embodiment, as shown in fig. 6, the first engaging portion 110 includes a threaded hole 118, and the second engaging portion 210 includes an embedded post 218 adapted to fit into the threaded hole 118. Threaded holes 118 are formed in the end plate 100, and during injection molding of the injection-molded part 200 on the end plate 100, plastic in a molten state infiltrates into the threaded holes 118 to form embedded columns 218, and the embedded columns 218 are fitted into the threaded holes 118, so that the stability of the joint between the end plate 100 and the injection-molded part 200 is improved.

In a sixth embodiment, as shown in fig. 7 and 8, one of the end plate 100 and the injection molded part 200 is provided with a mounting groove 101, and the other of the end plate 100 and the injection molded part 200 is mounted in the mounting groove 101;

the first engagement portion 110 includes a notch 119, the notch 119 is located on the end surface of the end plate 100 that engages the injection molded part 200, and the second engagement portion 210 includes an injection-molded penetration portion 219 that fits into the notch 119.

Specifically, the mounting groove 101 may be a direct-current channel formed by drawing, and a plurality of notches 119 are formed in the inner side wall of the mounting groove 101, and the notches 119 are arranged at intervals. In the process of injection molding to form the injection molding part 200, the molten plastic infiltrates into the notch 119, so that an injection molding infiltration part 219 tightly matched with the notch 119 is formed, the bonding strength of the injection molding part 200 and the end plate 100 is enhanced, when the end plate 100 is acted by external force, the stress between different materials can be effectively borne through the matching of the first embedding part 110 and the second embedding part 210, and the reliability and the durability of a product are further improved.

The embodiment of the utility model provides a fuel cell includes above-mentioned end plate scarf joint structure, and fuel cell possesses the technological effect of end plate scarf joint structure, can avoid producing the fit clearance that warp and lead to because of stress between the different materials, can make end plate 100 and injection molding 200 joint firm to avoid producing the problem of seam and infiltration, prolonged the life of equipment.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. An end plate scarf joint structure, comprising: an end plate (100) and an injection molded part (200);

a first embedded part (110) is arranged on the end plate (100);

the injection molding piece (200) is combined with the end plate (100) in an injection molding mode, and a second embedded part (210) matched with the first embedded part (110) is formed.

2. The end plate scarf structure according to claim 1, wherein said second scarf part (210) includes: a first burring part (211) and a first embedding part (212);

the injection molding piece (200) is provided with an engagement end surface (201) opposite to the end plate (100), and the engagement end surface (201), the first flanging part (211) and the first embedding part (212) are jointly surrounded to form a first embedding groove (202).

3. The end plate scarf structure according to claim 2, wherein said first scarf part (110) includes: a second caulking groove (111) and a first boss (112), the first boss (112) being located between the second caulking groove (111) and the joint end surface (201);

the first projection (112) is connected in the first groove (202), and the first insertion part (212) is connected in the second groove (111).

4. The end plate scarf structure according to claim 2, wherein said second scarf part (210) further includes: a second burring part (213) and a second embedding part (214);

the joint end face (201), the second flanging part (213) and the second embedding part (214) are arranged in a surrounding mode to form a third embedding groove (203), and the third embedding groove (203) is opposite to the first embedding groove (202).

5. The end plate scarf structure according to claim 4, wherein said first scarf part (110) further includes: a fourth caulking groove (113) and a second projection (114), the second projection (114) being located between the fourth caulking groove (113) and the joint end surface (201);

the second protruding portion (114) is connected in the third caulking groove (203), and the second embedding portion (214) is connected in the fourth caulking groove (113).

6. The end plate scarf structure according to claim 4, wherein an embedded protrusion (215) is provided on said second embedding portion (214), and said first scarf part (110) includes an embedded groove (115) that is fitted with said embedded protrusion (215).

7. The end plate scarf structure according to claim 1, wherein said first scarf part (110) includes a first recess (116), said second scarf part (210) includes a first insertion part (216) fitted to said first recess (116);

and/or the first embedding part (110) comprises a second inserting part (117), and the second embedding part (210) comprises a second concave part (217) matched with the second inserting part (117).

8. The end plate scarf structure according to claim 1, characterized in that said first scarf part (110) includes a threaded hole (118) and said second scarf part (210) includes an embedded post (218) that is fitted to said threaded hole (118).

9. The end plate scarf structure according to claim 1, characterized in that one of said end plate (100) and injection molded part (200) is provided with a mounting groove (101), and the other of said end plate (100) and injection molded part (200) is mounted in said mounting groove (101);

the first embedded part (110) comprises a notch (119), the notch (119) is located on the end face of the end plate (100) which is jointed with the injection molding piece (200), and the second embedded part (210) comprises an injection molding penetration part (219) which is matched with the notch (119).

10. A fuel cell characterized by comprising the end plate engagement structure according to any one of claims 1 to 9.

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