阅读说明：本技术 燃料电池金属双极板巡检辅助结构及燃料电池 (Fuel cell metal bipolar plate inspection auxiliary structure and fuel cell ) 是由 姜天豪 曹运 毕飞飞 胡鹏 杜祥永 鲍恩泽 蓝树槐 于 2021-08-06 设计创作，主要内容包括：本发明涉及一种燃料电池金属双极板巡检辅助结构及燃料电池。燃料电池金属双极板巡检辅助结构,包括相互卡接设置的电压检测集成式快插部以及金属双极板卡接部。一方面采用第一导向结构与第二导向结构相适配导向,提高连接效率；并且设置金属簧片形成压紧部,压紧部与金属簧片之间存在夹紧力,防止接触不良,提高稳定性；利用塑料外壳上的悬臂卡扣与凸起固定,保证所述电压检测集成式快插部与所述金属双极板卡接部的连接稳定性,且方便锁紧与取下。利用翅片插槽、第一导向结构与第二导向结构的限位作用避免晃动,实现电压检测集成式快插部与金属双极板卡接部的紧固连接,不会因为重复接插而损坏变形,提高极板寿命。(The invention relates to a metal bipolar plate inspection auxiliary structure of a fuel cell and the fuel cell. The fuel cell metal bipolar plate inspection auxiliary structure comprises a voltage detection integrated quick-insertion part and a metal bipolar plate clamping part which are clamped with each other. On one hand, the first guide structure and the second guide structure are adopted for adaptive guide, so that the connection efficiency is improved; the metal spring is arranged to form a pressing part, and a clamping force exists between the pressing part and the metal spring, so that poor contact is prevented, and the stability is improved; the cantilever buckle on the plastic shell is fixed with the bulge, so that the connection stability of the voltage detection integrated quick-plugging part and the metal bipolar plate clamping part is ensured, and the locking and the taking down are convenient. Utilize fin slot, first guide structure and second guide structure's limiting displacement to avoid rocking, realize the fastening connection of voltage detection integrated form quick-insertion portion and metal bipolar plate joint portion, can not damage the deformation because of repeated inserting, improve the polar plate life-span.)

1. An inspection auxiliary structure of a fuel cell metal bipolar plate is characterized by comprising a voltage detection integrated quick-insertion part and a metal bipolar plate clamping part which are clamped with each other;

the voltage detection integrated quick plug part comprises a plastic shell and a metal reed; a reed placing groove is formed in the plastic shell, a fin slot is formed in the front end of the plastic shell, a lead interface is formed in the tail end of the plastic shell, and the lead interface is communicated with the reed placing groove; the metal reed is arranged in the reed placing groove, the front end of the metal reed is in a clip shape and corresponds to the fin inserting groove, and the tail end of the metal reed is in a U shape and corresponds to the lead interface; two outer side surfaces of the metal reed are respectively provided with a retaining block buckle, and the plastic shell is provided with a retaining opening matched with the buckle; the metal reeds are arranged into at least two layers, each layer of metal reeds is arranged into at least two rows, and a first guide structure is arranged between every two adjacent rows of metal reeds; the first guide structure is flush with the front end of the plastic shell; the two sides of the plastic shell are respectively connected with a cantilever buckle, the cantilever buckles are arranged along the front and back directions, the front parts of the cantilever buckles are provided with buckles, the tail parts of the cantilever buckles are connected with the plastic shell, and the middle parts of the cantilever buckles are pressed to enable the front parts of the cantilever buckles to be far away from the plastic shell;

the metal bipolar plate clamping part is arranged on the fuel cell metal bipolar plate and comprises a voltage detection structure, a second guide structure and a locking and fixing structure; the voltage detection structure is provided with a plurality of layers, each layer of the voltage detection structure comprises fins, and two fins of two adjacent layers of the voltage detection structures are arranged at intervals respectively; the second guide structure is positioned between the two voltage detection structures arranged on the same layer, and the second guide structure and the two voltage detection structures are integrally arranged; the locking and fixing structures are U-shaped and are respectively positioned on two sides of the voltage detection structures, and protrusions are arranged at the end parts facing the voltage detection structures.

2. The inspection auxiliary structure for the metal bipolar plate of the fuel cell as claimed in claim 1, wherein when the integrated voltage detection type quick-insertion portion and the metal bipolar plate clamping portion are clamped with each other, the first guide structure and the second guide structure are adapted to guide, the fin penetrates through the fin insertion slot and is inserted between the tail ends of the metal reeds, and the cantilever is clamped to the protrusion.

3. The inspection auxiliary structure of the fuel cell metal bipolar plate according to claim 1, wherein a guide part is arranged at the tail end of the metal reed, the middle parts of the tail ends of the metal reed are close to each other at the position close to the guide part to form compression parts, and the distance between the compression parts is smaller than the thickness of the fin.

4. The inspection aid for metal bipolar plates of fuel cells of claim 1, wherein the first and second guiding structures are mating guide posts and guide post grooves.

5. The inspection auxiliary structure for the metal bipolar plate of the fuel cell as claimed in claim 1, wherein a pressing part is arranged at the middle part or the tail part of the cantilever snap, and the pressing part protrudes out of the outer side surface of the cantilever snap.

6. The inspection auxiliary structure for the metal bipolar plate of the fuel cell as claimed in claim 1, wherein an elastic member is disposed at a middle portion of the cantilever snap, and the elastic member is located between an inner sidewall of the cantilever snap and the plastic housing.

7. The fuel cell metal bipolar plate inspection aid structure according to claim 1, wherein the elastic member comprises a spring or a leaf spring.

8. The inspection auxiliary structure for the metal bipolar plate of the fuel cell of claim 1, wherein a pressing part is convexly arranged on the surface of the outer side of the middle part of the cantilever buckle, an elastic part is arranged on the inner side wall of the middle part of the cantilever buckle, and the elastic part is positioned between the inner side wall of the cantilever buckle and the plastic shell and is arranged corresponding to the pressing part.

9. The fuel cell metal bipolar plate inspection aid structure according to claim 1, wherein the plastic housing is integrally formed with the cantilever snap.

10. A fuel cell comprising the fuel cell metal bipolar plate inspection aid structure of any one of claims 1 to 9; the fuel cell comprises a metal bipolar plate, the metal bipolar plate is connected with the metal bipolar plate clamping portion, and the voltage detection integrated quick-plug portion is detachably clamped with the metal bipolar plate clamping portion.

Technical Field

The invention belongs to the technical field of fuel cells, relates to a testing device of a fuel cell, and particularly relates to a metal bipolar plate inspection auxiliary structure of the fuel cell and the fuel cell.

Background

In order to ensure the reliable operation of the fuel cell, voltage monitoring is required, so a voltage inspection auxiliary structure must be designed on the metal bipolar plate to interface with an external lead, as shown in fig. 1, conventionally, a lead of the external lead interface is connected to a metal contact pin 91, and then the metal contact pin 91 is inserted into a hole-shaped voltage inspection auxiliary structure 92 on the metal bipolar plate, so that the connection of the external lead interface with the metal bipolar plate of the fuel cell is realized, and voltage monitoring can be performed.

However, this connection method is difficult to operate on a large-sized electric pile, and may cause failures such as insertion of pins, distortion, and failure of vibration connection, which makes the connection operation very difficult and makes it impossible to realize integrated connection.

Through the literature search of the prior art, the research reports of the integrated quick-insertion device for detecting the voltage of the metal bipolar plate of the fuel cell are less.

For example, patent CN 210576577U discloses a solution that uses a metal spring instead of a metal pin, but lacks an effective fixing for the metal spring, so that the metal spring is easy to fall off during plugging and unplugging. The metal reed can be misaligned and deformed, fails in connection and the like when plugged again, and the arranged guide structure is only all parts in the middle of the butt joint part, so that butt joint shaking is easily generated to increase the connection gap, the vibration connection failure and other failures are caused, and the metal reed falls off in the plugging process due to the containing.

Disclosure of Invention

The invention aims to provide an auxiliary structure for detecting the voltage of a metal bipolar plate of a fuel cell and a design method of the fuel cell, aiming at improving the voltage detection stability, and solving the technical problems that the existing fuel cell has poor connection stability with an external lead interface, is inconvenient to connect and operate and cannot realize integrated connection.

The purpose of the invention can be realized by the following technical scheme, the application provides a fuel cell metal bipolar plate inspection auxiliary structure, which comprises a voltage detection integrated quick-inserting part and a metal bipolar plate clamping part, wherein the voltage detection integrated quick-inserting part and the metal bipolar plate clamping part are mutually clamped; the voltage detection integrated quick plug part comprises a plastic shell and a metal reed; a reed placing groove is formed in the plastic shell, a fin slot is formed in the front end of the plastic shell, a lead interface is formed in the tail end of the plastic shell, and the lead interface is communicated with the reed placing groove; the metal reed is arranged in the reed placing groove, the front end of the metal reed is in a clip shape and corresponds to the fin inserting groove, and the tail end of the metal reed is in a U shape and corresponds to the lead interface; two outer side surfaces of the metal reed are respectively provided with a retaining block buckle, and the plastic shell is provided with a retaining opening matched with the buckle; the metal reeds are arranged into at least two layers, each layer of metal reeds is arranged into at least two rows, and a first guide structure is arranged between every two adjacent rows of metal reeds; the first guide structure is flush with the front end of the plastic shell; the two sides of the plastic shell are respectively connected with a cantilever buckle, the cantilever buckles are arranged along the front and back directions, the front parts of the cantilever buckles are provided with buckles, the tail parts of the cantilever buckles are connected with the plastic shell, and the middle parts of the cantilever buckles are pressed to enable the front parts of the cantilever buckles to be far away from the plastic shell; the metal bipolar plate clamping part is arranged on the fuel cell metal bipolar plate and comprises a voltage detection structure, a second guide structure and a locking and fixing structure; the voltage detection structure is provided with a plurality of layers, each layer of the voltage detection structure comprises fins, and two fins of two adjacent layers of the voltage detection structures are arranged at intervals respectively; the second guide structure is positioned between the two voltage detection structures arranged on the same layer, and the second guide structure and the two voltage detection structures are integrally arranged; the locking and fixing structures are U-shaped and are respectively positioned on two sides of the voltage detection structures, and protrusions are arranged at the end parts facing the voltage detection structures.

Further, when the voltage detection integrated quick-insertion portion is clamped with the metal bipolar plate clamping portion, the first guide structure and the second guide structure are matched and guided, the fin penetrates through the fin slot and is inserted between the tail ends of the metal reeds, and the cantilever clamp is clamped to the protrusion.

Furthermore, the tail end of the metal reed is provided with a guide part, the middle parts of the tail end of the metal reed are close to the guide part to form compression parts, and the distance between the compression parts is smaller than the thickness of the fin.

Further, the first guide structure and the second guide structure are a guide pillar and a guide pillar groove which are matched with each other.

Furthermore, the middle part or the tail part of the cantilever buckle is provided with a pressing part which protrudes out of the outer side surface of the cantilever buckle.

Furthermore, the middle part of the cantilever buckle is provided with an elastic part, and the elastic part is positioned between the inner side wall of the cantilever buckle and the plastic shell.

Further, the elastic member includes a spring or a leaf spring.

Furthermore, the protruding splenium of pressing that is equipped with in middle part outside surface of cantilever buckle, the middle part inside wall of cantilever buckle is equipped with the elastic component, the elastic component is located cantilever buckle inside wall with between the plastic casing and with press the splenium to correspond the setting.

Further, the plastic shell and the cantilever buckle are integrally arranged.

The application also provides a fuel cell, which comprises the fuel cell metal bipolar plate routing inspection auxiliary structure; the fuel cell comprises a metal bipolar plate, the metal bipolar plate is connected with the metal bipolar plate clamping portion, and the voltage detection integrated quick-plug portion is detachably clamped with the metal bipolar plate clamping portion.

Because the pin is plugged into the hole-shaped voltage inspection auxiliary structure on the metal bipolar plate, the reliability and the practicability are not strong, the invention provides the auxiliary structure for detecting the voltage of the metal bipolar plate of the fuel cell and the fuel cell, the stability and the practicability of the connector are improved, and the assembly efficiency is improved. On one hand, the first guide structure and the second guide structure are adopted for adaptive guide, so that the connection efficiency is improved; the metal spring is arranged to form a pressing part, and a clamping force exists between the pressing part and the metal spring, so that poor contact is prevented, and the stability is improved; the cantilever buckle on the plastic shell is fixed with the bulge, so that the connection stability of the voltage detection integrated quick-plugging part and the metal bipolar plate clamping part is ensured, and the locking and the taking down are convenient. Utilize fin slot, first guide structure with the limiting displacement of second guide structure avoids rocking, realizes voltage detection integrated form fast inserting portion with the fastening connection of metal bipolar plate joint portion, can not damage the deformation because of repeated inserting, improve the polar plate life-span.

Drawings

FIG. 1 is a schematic connection diagram of a conventional hole-shaped voltage inspection auxiliary structure of a metal bipolar plate;

FIG. 2 is an assembly view of the inspection auxiliary structure of the metal bipolar plate of the present application;

FIG. 3 is an exploded view of the inspection aid for metal bipolar plates according to the present application;

FIG. 4 is a schematic structural diagram of an integrated voltage detection quick-insertion portion according to the present application;

FIG. 5 is an enlarged view of the area A of FIG. 4;

FIG. 6 is a schematic longitudinal cross-sectional view taken at A-A of FIG. 4 of the present application;

FIG. 7 is an enlarged view of the area B of FIG. 6;

FIG. 8 is a schematic horizontal cross-sectional view of the integrated voltage detection quick-insertion portion of the present application;

the designations in the drawings are as follows:

the fuel cell metal bipolar plate inspection auxiliary structure 100,

the voltage detection integrated fast plug-in part 1,

plastic housing 11, reed placing groove 111, fin inserting groove 112, lead wire interface 113,

a metal spring 12, a retaining block buckle 121, a first guide part 122, a pressing part 123, a clamping ring 124,

a clamping part 2 of the metal bipolar plate,

the voltage sensing structure 21, the fins 211,

the second guide structure 22, the locking fixing structure 23, the protrusion 231,

the length of the wire 3 is set to be,

the first guide structure 4 is provided with a first guide structure,

a cantilever buckle 5 is arranged at the upper part of the bracket,

the pressing part (6) is provided with a pressing part,

an elastic member 7.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example 1

As shown in fig. 2, embodiment 1 of the present application provides an inspection auxiliary structure 100 for a metal bipolar plate of a fuel cell, which includes a voltage detection integrated quick-insertion portion 1 and a metal bipolar plate clamping portion 2 that are clamped to each other.

The voltage detection integrated quick plug part 1 comprises a plastic shell 11 and a metal reed 12; the metal reed 12 is used as a part of a voltage acquisition unit; a reed placing groove 111 is formed in the plastic shell 11, a fin slot 112 is formed in the front end of the plastic shell 11, a lead interface 113 is formed in the tail end of the plastic shell 11, and the lead interface 113 is communicated with the reed placing groove 111; the metal reed 12 is arranged in the reed placing groove 111, the front end of the metal reed 12 is in a clip shape and corresponds to the fin slot 112, and the tail end of the metal reed 12 is in a U shape and corresponds to the lead interface 113; a lead 3 connected with an external voltage detection unit extends into the lead interface 113 to be connected with the clamping ring 124 at the head end of the metal reed 12; two outer side surfaces of the metal reed 12 are respectively provided with a retaining block buckle 121, and the plastic shell 11 is provided with a retaining opening (not shown) matched with the buckle; the metal reeds 12 are arranged into at least two layers, each layer of metal reeds 12 is arranged into at least two rows, and a first guide structure 4 is arranged between every two adjacent rows of metal reeds 12; the first guide structure 4 is flush with the front end of the plastic housing 11; the both sides of plastic casing 11 are connected with cantilever buckle 5 respectively, cantilever buckle 5 all sets up along the fore-and-aft direction, the front portion of cantilever buckle 5 is equipped with the buckle, and the afterbody and the plastic casing 11 of cantilever buckle 5 are connected, and the middle part of cantilever buckle 5 supplies to press so that plastic casing 11 is kept away from in its front portion. Wherein the mechanical structure of the barb on the metal reed 12 of the voltage acquisition unit is clamped by the backstop mouth of the plastic shell 11 to lock the metal reed 12, so as to prevent the metal reed 12 from withdrawing and realize integrated detection.

The metal bipolar plate clamping part 2 is arranged on the fuel cell metal bipolar plate and comprises a voltage detection structure 21, a second guide structure 22 and a locking and fixing structure 23; the voltage detection structure 21 is provided with a plurality of layers, each layer of the voltage detection structure 21 comprises fins 211, and two fins 211 of two adjacent layers of the voltage detection structures 21 are arranged at intervals respectively; the second guiding structure 22 is located between the two voltage detecting structures 21 arranged on the same layer, and the second guiding structure 22 and the two voltage detecting structures 21 are integrally arranged; the locking fixing structures 23 are U-shaped and located on two sides of the two voltage detection structures 21, and protrusions 231 are arranged at end portions facing the voltage detection structures 21.

On one hand, the first guide structure 4 and the second guide structure 22 are adopted to be matched for guiding, so that the connection efficiency is improved; the cantilever buckle 5 on the plastic shell 11 is fixed with the protrusion 231, so that the connection stability of the voltage detection integrated quick-plug part 1 and the metal bipolar plate clamping part 2 is ensured, and the locking and the taking down are convenient. The limit action of the fin slot 112, the first guide structure 4 and the second guide structure 22 is utilized to avoid shaking, so that the voltage detection integrated quick-insertion part 1 and the metal bipolar plate clamping part 2 are fastened and connected, the damage and deformation caused by repeated insertion are avoided, and the service life of the polar plate is prolonged.

In this embodiment, when the integrated voltage detection type quick plug portion 1 and the metal bipolar plate clamping portion 2 are clamped with each other, the first guide structure 4 and the second guide structure 22 are adapted and guided, the fin 211 penetrates through the fin slot 112 and is inserted between the tail ends of the metal reeds 12, and the cantilever clamp 5 is clamped to the protrusion 231.

In this embodiment, the tail end of the metal reed 12 is provided with a guide portion 122, the middle portions of the tail end of the metal reed 12 approach each other at a position close to the guide portion 122 to form pressing portions 123, and the distance between the pressing portions is smaller than the thickness of the fins 211. The metal spring 12 is arranged to form the pressing part 123, and clamping force exists between the pressing part 123 and the metal spring 12, so that poor contact is prevented, and stability is improved.

In this embodiment, the first guiding structure 4 and the second guiding structure 22 are a guide post and a guide post groove which are matched with each other.

In this embodiment, the middle portion or the tail portion of the cantilever snap 5 is provided with a pressing portion 6, and the pressing portion 6 protrudes from the outer side surface of the cantilever snap 5.

In this embodiment, the middle of the cantilever snap 5 is provided with an elastic member 7, and the elastic member 7 is located between the inner side wall of the cantilever snap 5 and the plastic housing 11.

In this embodiment, the elastic member 7 includes a spring. The elastic piece 7 is located between the inner side wall of the cantilever buckle 5 and the plastic shell 11 and is arranged corresponding to the pressing part 6.

In this embodiment, the plastic housing 11 and the cantilever snap 5 are integrally disposed.

The present application also provides a fuel cell, which includes the foregoing fuel cell metal bipolar plate inspection auxiliary structure 100; the fuel cell comprises a metal bipolar plate, the metal bipolar plate is connected with the metal bipolar plate clamping portion 2, and the voltage detection integrated quick-plug portion 1 is detachably clamped with the metal bipolar plate clamping portion 2.

Because the pin is plugged into the hole-shaped voltage inspection auxiliary structure on the metal bipolar plate, the reliability and the practicability are not strong, the invention provides the auxiliary structure for detecting the voltage of the metal bipolar plate of the fuel cell and the fuel cell, the stability and the practicability of the connector are improved, and the assembly efficiency is improved. On one hand, the first guide structure 4 and the second guide structure 22 are adopted for adaptive guide, so that the connection efficiency is improved; the metal reed 12 is arranged to form a pressing part, and a clamping force exists between the pressing part and the metal reed 12, so that poor contact is prevented, and the stability is improved; the cantilever buckle 5 on the plastic shell 11 is fixed with the protrusion 231, so that the connection stability of the voltage detection integrated quick-plug part 1 and the metal bipolar plate clamping part 2 is ensured, and the locking and the taking down are convenient. The limit action of the fin slot 112, the first guide structure 4 and the second guide structure 22 is utilized to avoid shaking, so that the voltage detection integrated quick-insertion part 1 and the metal bipolar plate clamping part 2 are fastened and connected, the damage and deformation caused by repeated insertion are avoided, and the service life of the polar plate is prolonged.

Example 2

Embodiment 2 includes all the technical features of embodiment 1, and the difference is that in this embodiment, the elastic member 7 includes an elastic sheet. The elastic sheet is arranged between the inner side wall of the cantilever buckle 5 and the plastic shell 11; the spring plate is U-shaped, and the end part of the spring plate is positioned at one side of the clamping buckle of the cantilever clamping buckle 5.

In this embodiment, the protruding splenium 6 of being equipped with of middle part outside surface of cantilever buckle 5, the middle part inside wall of cantilever buckle 5 is equipped with elastic component 7, elastic component 7 is located 5 inside walls of cantilever buckle with between the plastic casing 11 and with splenium 6 corresponds the setting.

As shown in fig. 5, the elastic member 7 and the pressing portion 6 are of a circlip type, and the cantilever latch 5 can be easily pulled out or assembled by pressing.