Connecting structure for fuel cell and fuel cell

Abstract

The utility model provides a single-membrane inspection connection structure for a fuel cell and the fuel cell, and belongs to the technical field of fuel cells, the single-membrane inspection connection structure comprises a plug pin and a plug pin fixing piece, and the plug pin part structure is connected with an electric pile body in a plugging manner; the plug pin fixing part is provided with a detachable connecting part, the detachable connecting part has a first use state and a second use state, the plug pin is in contact with the detachable connecting part in the first state, the plug pin 5 is fixedly connected with the plug pin fixing part, and the detachable connecting part is separated from the plug pin in the second use state. Compared with the prior art, the single-membrane routing inspection connecting structure for the fuel cell and the fuel cell provided by the utility model have the beneficial effects that the single-membrane routing inspection connecting structure for the fuel cell and the fuel cell are convenient to use; according to the single-membrane inspection connection structure for the fuel cell and the fuel cell, the installation process of the connection structure is simple, glue is not needed, and time can be greatly saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuel cells, and more specifically, relates to a connection structure for fuel cells and a fuel cell. Background Art

[0002] Fuel cells, which convert the chemical energy of oxidants and reductants directly into electricity through electrocatalytic reactions, are a new, efficient, safe, clean, and flexible power generation technology. Proton exchange membrane fuel cells, with their significant advantages such as high efficiency, high energy density, low reaction temperature, and quiet and pollution-free operation, have broad application prospects in ground-based power stations, electric vehicles, and portable power sources.

[0003] Fuel cells are referred to as stacks hereafter. To ensure stable operation of the stack, the voltage of each cell needs to be monitored. This is achieved through multiple single-cell voltage inspection boards, which are connected to the stack via a "connector."

[0004] The defects of the traditional connector pin installation method are:

[0005] 1. The connector pins are installed one by one on the battery, and the order is easy to get wrong;

[0006] 2. The material of a single battery is graphite plate, and the plug pins are generally fixed with glue, which can cause the plug pins to loosen easily; inserting the plug pins is time-consuming; the glue can easily clog the plug pin holes on the single battery; the glue takes a long time to dry, requiring 3-2 hours; the product surface is not neat and beautiful. Utility Model Content

[0007] The purpose of the utility model is to provide a connection structure for a fuel cell and a fuel cell, aiming to solve the technical problem in the prior art that the plug pins are fixed with glue and the installation process is time-consuming.

[0008] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a connection structure for a fuel cell, comprising:

[0009] Plug-in pins, some structures are connected to the battery stack body by plugging and unplugging;

[0010] The plug pin fixing piece is provided with a detachable connecting portion, and the detachable connecting portion limits the plug pin by a snap-fitting manner.

[0011] Preferably, the plug pin fixing member includes:

[0012] a base, provided with the first groove;

[0013] The upper cover is detachably connected to the base, and the upper cover is provided with a second groove for cooperating with the first groove to form the detachable connection part.

[0014] Preferably, a plurality of the detachable connecting portions are provided at intervals from one end to the other end of the plug pin fixing member.

[0015] Preferably, the base comprises:

[0016] a first plate, provided with a connecting portion detachably connected to the upper cover;

[0017] A connecting plate, one end of which is connected to the first plate; the connecting plate is arranged at an angle to the first plate;

[0018] The second plate is connected to the other end of the connecting plate, and the second plate is used to contact the battery stack body when the plug pin is inserted into the battery stack body.

[0019] Preferably, the plug pin includes an inserting portion, and the inserting portion is a sheet structure.

[0020] Preferably, the inserting portion includes elastic protrusions.

[0021] The present invention also provides a fuel cell, comprising a connection structure for a fuel cell as described in any one of the above items.

[0022] Preferably, it also includes a stack body and a fixed pressure plate embedded in the stack body, and the fixed pressure plate is used to press the connection structure for the fuel cell onto the stack body.

[0023] The utility model provides a connection structure for a fuel cell and a fuel cell with the following beneficial effects: Compared with the prior art, the utility model provides a connection structure for a fuel cell and a fuel cell, which can achieve a detachable connection between the plug pin and the plug pin fixing member through a detachable connection portion. The connection structure is simple to install, requiring only 1-2 minutes. The plug pin is fixed through the detachable connection portion without the need for glue, which greatly saves time, makes it easier to repair the fuel cell stack, and the product surface is neat and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 An exploded structural diagram of a fuel cell provided in an embodiment of the present utility model;

[0026] Figure 2An exploded structural diagram of a connection structure for a fuel cell provided by an embodiment of the present utility model;

[0027] Figure 3 A schematic structural diagram of an upper cover used in a connection structure for a fuel cell provided in an embodiment of the present utility model;

[0028] Figure 4 A schematic structural diagram of a base used in a connection structure for a fuel cell provided in an embodiment of the present utility model;

[0029] Figure 5 A schematic structural diagram of a plug-in pin used in a connection structure for a fuel cell provided in an embodiment of the present utility model;

[0030] Figure 6 A schematic structural diagram of a fuel cell provided in an embodiment of the present utility model;

[0031] Figure 7 for Figure 6 A magnified schematic diagram of the structure in the middle.

[0032] In the figure: 1. Fixed pressure plate; 2. Base; 3. Stack body; 4. Upper cover; 5. Connector pins. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] Please also refer to Figures 1 to 7 The present invention now provides a connection structure for a fuel cell. The structure comprises a plug-in pin 5 and a plug-in pin fixture. The plug-in pin 5 is partially connected to the fuel cell stack body 3 via plugging and unplugging. The plug-in pin fixture is provided with a detachable connection portion. The detachable connection portion has a first and a second operating state. In the first state, the plug-in pin 5 is in contact with the detachable connection portion, and the plug-in pin 5 is fixedly connected to the plug-in pin fixture. In the second operating state, the detachable connection portion and the plug-in pin 5 are separated from each other. The detachable connection portion retains the plug-in pin 5 in position by snapping.

[0035] Compared to existing technologies, the present invention provides a fuel cell connection structure that utilizes a detachable connector to achieve a detachable connection between a plug pin 5 and a plug pin fixture. This connection structure is simple to install, requiring only 1-2 minutes. The detachable connector secures the plug pin 5 without the need for glue, significantly saving time and facilitating stack repairs. Furthermore, the product's surface is clean and aesthetically pleasing.

[0036] In any feasible embodiment, the detachable connection portion is a retaining groove provided on the bottom surface of the plug pin fixing member. A plurality of rubber blocks are provided on the end surfaces of the retaining groove. When the plug pin 5 is inserted into the retaining groove, the rubber blocks elastically deform and retain the plug pin 5 in place.

[0037] As a specific implementation of the present invention, please refer to Figures 1 to 7 The connector pin holder includes a base 2 and a cover 4. The base 2 is provided with a first groove. The cover 4 is detachably connected to the base 2 and has a second groove that mates with the first groove to form a detachable connection. The detachable connection is a connection hole provided on the connector pin holder, allowing for easy installation and removal of the connector pin.

[0038] In this embodiment, a clamping block is provided on the base 2. A clamping hole is provided on the upper cover 4. The base 2 and the upper cover 4 can be connected by inserting the clamping block into the clamping hole.

[0039] In this embodiment, a plurality of detachable connecting portions are provided at intervals along the length of the pin fixing member from one end to the other end, so as to fix a plurality of connectors 5 .

[0040] Specifically, a plurality of connecting holes are provided at equal intervals from one end to the other end of the plug pin fixing piece.

[0041] In this embodiment, the base 2 includes: a first plate, a connecting plate, and a second plate. The first plate is provided with a connecting portion that is detachably connected to the upper cover 4; the connecting portion is a clamping block. One end of the connecting plate is connected to the first plate; the connecting plate and the first plate are arranged at an angle. The specific angle can be determined based on the angle between the connection position of the stack body 3 and the connection structure for the fuel cell. The second plate is connected to the other end of the connecting plate, and the second plate is used to contact the stack body (3) when the plug-in pin 5 is inserted into the stack body 3.

[0042] In this embodiment, the connecting plates are perpendicular to the first plate and the second plate respectively.

[0043] As a specific implementation of the present invention, please refer to Figures 1 to 7, the plug-in pin 5 includes an insertion part, and the insertion part is a sheet structure. The plug-in pin 5 also includes a rod body. The rod body is connected to the insertion part. The insertion part includes a first insertion section and a second insertion section, one end of the second insertion section is connected to the rod body, and the other end is connected to the first insertion section. The second insertion section is set at a certain angle to the first insertion section. When the second insertion section can be connected and fixed to the plug-in pin fixing piece, the first insertion section can be at a certain angle to the plug-in pin fixing piece, and the first insertion section can be inserted into the battery stack body 3.

[0044] In this embodiment, the insertion portion includes elastic protrusions. Specifically, the elastic protrusions are arranged on the second insertion section.

[0045] The present invention further provides a fuel cell, comprising a connection structure for a fuel cell as described above, a fuel cell stack body 3, and a fixed pressure plate 1 embedded in the fuel cell stack body 3, the fixed pressure plate 1 being used to press the connection structure for a fuel cell onto the fuel cell stack body 3.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A connection structure for a fuel cell, characterized in that: include: A plug-in pin (5), part of which is connected to the battery stack body (3) by plugging and unplugging; The plug pin fixing piece is provided with a detachable connecting portion, and the detachable connecting portion limits the plug pin (5) by a snap-fitting manner.

2. A connection structure for a fuel cell according to claim 1, characterized in that: The plug pin fixing member includes: A base (2) is provided with a first groove; The upper cover (4) is detachably connected to the base (2), and the upper cover (4) is provided with a second groove for cooperating with the first groove to form the detachable connection portion.

3. A connection structure for a fuel cell according to any one of claims 1 to 2, characterized in that: A plurality of detachable connecting portions are spaced apart from one end to the other end of the plug pin fixing member.

4. A connection structure for a fuel cell according to claim 2, characterized in that: The base (2) comprises: a first plate provided with a connection portion detachably connected to the upper cover (4); A connecting plate, one end of which is connected to the first plate; the connecting plate is arranged at an angle to the first plate; The second plate is connected to the other end of the connecting plate, and the second plate is used for contacting the battery stack body (3) when the plug pin (5) is inserted into the battery stack body (3).

5. A connection structure for a fuel cell according to claim 4, characterized in that: The plug-in needle (5) comprises an inserting portion, and the inserting portion is a sheet structure.

6. A connection structure for a fuel cell according to claim 5, characterized in that: The inserting portion includes elastic protrusions.

7. A fuel cell, characterized in that: The invention comprises a connection structure for a fuel cell according to any one of claims 1 to 6.

8. A fuel cell according to claim 7, characterized in that: It also includes a fuel cell stack body (3) and a fixed pressure plate (1) embedded in the fuel cell stack body (3), wherein the fixed pressure plate (1) is used to press the connection structure for a fuel cell onto the fuel cell stack body (3).

Images