Electric pile voltage acquisition module fixing device and fuel cell

Abstract

The utility model provides an electric pile voltage acquisition module fixing device and a fuel cell, and relates to the technical field of fuel cells. The stack voltage acquisition module fixing device comprises a fixing rod and a fixing rod pressing block; the fixing rod is inserted into a clamping groove of the voltage acquisition terminal, so that the voltage acquisition terminal is stably inserted into a bipolar plate of a galvanic pile; the fixing rod pressing block is arranged at the top of the fixing rod in a pressing mode, and the end, deviating from the fixing rod, of the fixing rod pressing block abuts against a shell top cover of the electric pile so that the fixing rod pressing block can tightly press the fixing rod. The fuel cell comprises the stack voltage acquisition module fixing device. The technical effect of improving the connection stability of the voltage acquisition module is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, and in particular to a fixing device for a stack voltage acquisition module and a fuel cell. Background Art

[0002] Fuel cells, as an important clean energy technology, are gaining increasing attention and application. The voltage acquisition module, a key component of fuel cells, plays a crucial role in monitoring the fuel cell's operating status. The voltage acquisition module is attached to the bipolar plate via a connector to collect the voltage of each fuel cell.

[0003] However, existing fuel cell voltage acquisition modules have certain shortcomings, significantly restricting the further application and development of fuel cell status monitoring technology. The traditional fuel cell voltage acquisition module's fixed structure has certain defects. During vehicle operation, impact and vibration caused by different road conditions can cause the fixed structure to loosen or even disconnect. This can lead to unstable connections in the voltage acquisition module, resulting in false connections, making it impossible to collect accurate voltage signals and accurately assess and monitor the battery's performance status. Utility Model Content

[0004] The purpose of the utility model is to provide a device for fixing a voltage acquisition module of a fuel cell stack and a fuel cell, so as to alleviate the technical problem of poor connection stability of the voltage acquisition module in the prior art.

[0005] In a first aspect, an embodiment of the present invention provides a fixing device for a stack voltage acquisition module, comprising a fixing rod and a fixing rod pressing block;

[0006] The fixing rod is inserted into the card slot of the voltage collection terminal, so that the voltage collection terminal is stably inserted into the bipolar plate of the battery stack;

[0007] The fixing rod pressing block is pressed on the top of the fixing rod, and one end of the fixing rod pressing block facing away from the fixing rod abuts against the shell top cover of the fuel cell stack, so that the fixing rod pressing block can press the fixing rod.

[0008] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a connecting portion is provided on the top of the fixing rod pressing block, and the connecting portion is connected to the shell top cover through a threaded connector.

[0009] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a spring washer and a flat washer are provided between the above-mentioned connecting portion and the threaded connector.

[0010] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein an insulating shock-absorbing pad is provided at the bottom of the fixing rod pressing block.

[0011] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein there are multiple fixed rod pressing blocks, and the multiple fixed rod pressing blocks are arranged at equal intervals.

[0012] In combination with the first aspect, an embodiment of the utility model provides a possible implementation of the first aspect, wherein a mounting hole is provided on the end plate of the above-mentioned fuel cell stack, the fixing rod passes through the mounting hole and is inserted into the slot of the voltage collection terminal, and the end of the fixing rod is located in the mounting hole.

[0013] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the two end plates of the above-mentioned fuel cell stack are both provided with the mounting holes, and the two ends of the fixing rod are respectively located in the two mounting holes.

[0014] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the height of the lowest point of the above-mentioned mounting hole is not higher than the height of the bottom of the slot.

[0015] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a plug is provided on a side of the mounting hole facing away from the bipolar plate.

[0016] In a second aspect, an embodiment of the present invention provides a fuel cell, including the stack voltage acquisition module fixing device.

[0017] Beneficial effects:

[0018] The utility model provides a fixing device for a battery stack voltage acquisition module, comprising a fixing rod and a fixing rod pressing block; the fixing rod is inserted into a card slot of a voltage acquisition terminal so that the voltage acquisition terminal can be stably inserted into the bipolar plate of the battery stack; the fixing rod pressing block is pressed on the top of the fixing rod, and one end of the fixing rod pressing block facing away from the fixing rod abuts against the top cover of the battery stack shell so that the fixing rod pressing block can press the fixing rod tightly.

[0019] Specifically, the voltage collection terminal is inserted into the CVP (cell voltage pickup) interface of the bipolar plate, the fixing rod is inserted into the slot of the voltage collection terminal, and then the fixing rod pressing block is installed on the shell top cover of the battery stack. Then, when installing the shell top cover, the fixing rod pressing block can be pressed on the fixing rod, thereby fixing the fixing rod, so that the position of the fixing rod will not move due to vibration and other reasons, and then the fixing rod can firmly press the voltage collection terminal to avoid the voltage collection terminal from loosening due to vibration and other reasons.

[0020] The utility model provides a fuel cell, including a stack voltage acquisition module fixing device. Compared with the prior art, the fuel cell has the above advantages, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the use of the stack voltage acquisition module fixing device provided by an embodiment of the present utility model;

[0023] Figure 2 A partially enlarged view of the fixing device for the stack voltage acquisition module provided in an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the connection between the fixed rod pressing block and the fixed rod in the stack voltage acquisition module fixing device provided by an embodiment of the present utility model.

[0025] icon:

[0026] 1-voltage acquisition terminal; 2-bipolar plate; 3-wiring harness; 4-controller; 5-fixing rod; 6-end plate; 7-screw; 8-fixing rod pressure block; 9-spring washer; 10-flat washer; 11-housing top cover; 12-insulating shock-absorbing pad. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore should not be understood as a limitation to the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0030] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0031] The present invention will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

[0032] See also Figure 1 、 Figure 2 and Figure 3 As shown, this embodiment provides a device for fixing a stack voltage acquisition module, including a fixing rod 5 and a fixing rod pressing block 8; the fixing rod 5 is inserted into the slot of the voltage acquisition terminal 1 so that the voltage acquisition terminal 1 can be stably inserted into the bipolar plate 2 of the stack; the fixing rod pressing block 8 is pressed on the top of the fixing rod 5, and the end of the fixing rod pressing block 8 facing away from the fixing rod 5 abuts against the shell top cover 11 of the stack so that the fixing rod pressing block 8 can press the fixing rod 5.

[0033] Specifically, the voltage acquisition terminal 1 is inserted into the CVP (cell voltage pickup) interface of the bipolar plate 2, and the fixing rod 5 is inserted into the slot of the voltage acquisition terminal 1. The fixing rod pressing block 8 is then installed on the housing top cover 11 of the battery stack. When the housing top cover 11 is installed, the fixing rod pressing block 8 can press on the fixing rod 5, thereby fixing the fixing rod 5. The position of the fixing rod 5 will not move due to vibration and other reasons. In addition, the fixing rod 5 can firmly press the voltage acquisition terminal 1, preventing the voltage acquisition terminal 1 from loosening due to vibration and other reasons. This improves the connection reliability of the voltage acquisition terminal 1 and reduces maintenance costs.

[0034] See also Figure 1 、 Figure 2 and Figure 3 As shown, in an optional solution of this embodiment, a mounting hole is opened on the end plate 6 of the fuel cell stack, and the fixing rod 5 passes through the mounting hole and is inserted into the slot of the voltage collection terminal 1, and the end of the fixing rod 5 is located in the mounting hole.

[0035] The two end plates 6 of the stack are each provided with mounting holes, and the two ends of the fixing rod 5 are respectively located in the two mounting holes.

[0036] The lowest point of the mounting hole is no higher than the bottom of the slot.

[0037] A plug is provided on the side of the mounting hole facing away from the bipolar plate 2 .

[0038] Specifically, mounting holes are provided on the end plates 6 on both sides of the bipolar plate 2, and the height of the lowest point of the mounting hole is not higher than the height of the bottom of the slot. Therefore, when the fixing rod 5 is installed, the fixing rod 5 is passed through the mounting holes of the two end plates 6, and the main part of the fixing rod 5 can be pressed into the slot of the voltage collection terminal 1, so that the fixing rod 5 has a certain pre-tightening force, and a plug is installed on the mounting hole to prevent the fixing rod 5 from moving due to external force.

[0039] In addition, the plug can be a screw 7. In addition, those skilled in the art can also choose the type of plug according to actual needs, which will not be described here.

[0040] See also Figure 1 、 Figure 2 and Figure 3 As shown, in an optional solution of this embodiment, a connecting portion is provided on the top of the fixing rod pressing block 8, and the connecting portion is connected to the housing top cover 11 through a threaded connector.

[0041] A spring washer 9 and a flat washer 10 are provided between the connecting portion and the threaded connector.

[0042] Among them, the bottom of the fixed rod pressing block 8 is provided with an insulating shock-absorbing pad 12. The insulating shock-absorbing pad 12 can be made of EPDM rubber. In addition, those skilled in the art can also select the type of insulating shock-absorbing pad 12 according to actual needs, which will not be described in detail here.

[0043] There are multiple fixed rod pressing blocks 8, and the multiple fixed rod pressing blocks 8 are arranged at equal intervals.

[0044] Specifically, a through hole is opened on the connection part of the fixing rod pressing block 8, and a threaded hole is opened on the shell top cover 11, so that the fixing rod pressing block 8 can be connected to the shell top cover 11 by bolts, thereby ensuring the stability of the fixing rod pressing block 8.

[0045] In addition, an insulating shock-absorbing pad 12 is provided at the bottom of the fixing rod pressing block 8, which can insulate the fixing rod 5 and the shell top cover 11, and can reduce the friction between the fixing rod 5 and the fixing rod pressing block 8 caused by vibration, thereby ensuring that the fixing rod pressing block 8 can firmly press the fixing rod 5.

[0046] During the assembly process, the voltage acquisition terminal 1 is inserted into the CVP interface of the bipolar plate 2, and the voltage signal collected by the voltage acquisition terminal 1 is transmitted to the controller 4 through the wiring harness 3; the fixing rod 5 is inserted into the slot of the voltage acquisition terminal 1 through the end plates 6 on both sides, and the fixing rod pressure block 8 is connected and fixed to the threaded hole on the top cover 11 of the stack shell through screws 7, spring washers 9 and flat washers 10. At the same time, a 2mm insulating shock-absorbing pad 12 is provided on the lower surface of the fixing rod pressure block 8, so that the gap between the fixing rod pressure block 8 and the pressure rod further ensures the reliability of the connection to absorb the influence of external vibration on the voltage acquisition module.

[0047] This embodiment provides a fuel cell, including a device for fixing a stack voltage acquisition module.

[0048] Specifically, compared with the prior art, the fuel cell has the advantages of the above-mentioned stack voltage acquisition module fixing device, which will not be described in detail here.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for fixing a stack voltage acquisition module, characterized in that: include: A fixing rod (5) and a fixing rod pressing block (8); The fixing rod (5) is inserted into the slot of the voltage collection terminal (1), so that the voltage collection terminal (1) is stably inserted into the bipolar plate (2) of the battery stack; The fixing rod pressing block (8) is pressed on the top of the fixing rod (5), and one end of the fixing rod pressing block (8) facing away from the fixing rod (5) abuts against the housing top cover (11) of the fuel cell stack, so that the fixing rod pressing block (8) can press the fixing rod (5).

2. The stack voltage acquisition module fixing device according to claim 1, characterized in that: A connecting portion is provided on the top of the fixing rod pressing block (8), and the connecting portion is connected to the housing top cover (11) via a threaded connector.

3. The stack voltage acquisition module fixing device according to claim 2, characterized in that: A spring washer (9) and a flat washer (10) are provided between the connecting portion and the threaded connector.

4. The stack voltage acquisition module fixing device according to claim 2, characterized in that: An insulating shock-absorbing pad (12) is provided at the bottom of the fixing rod pressing block (8).

5. The stack voltage acquisition module fixing device according to claim 1, characterized in that: There are multiple fixed rod pressing blocks (8), and the multiple fixed rod pressing blocks (8) are arranged at equal intervals.

6. The stack voltage acquisition module fixing device according to any one of claims 1 to 5, characterized in that: A mounting hole is provided on the end plate (6) of the stack, the fixing rod (5) passes through the mounting hole and is inserted into the slot of the voltage collection terminal (1), and the end of the fixing rod (5) is located in the mounting hole.

7. The stack voltage acquisition module fixing device according to claim 6, characterized in that: The two end plates (6) of the stack are both provided with the mounting holes, and the two ends of the fixing rod (5) are respectively located in the two mounting holes.

8. The stack voltage acquisition module fixing device according to claim 6, characterized in that: The height of the lowest point of the mounting hole is not higher than the height of the bottom of the slot.

9. The stack voltage acquisition module fixing device according to claim 6, characterized in that: A plug is provided on the side of the mounting hole facing away from the bipolar plate (2).

10. A fuel cell, characterized in that: It comprises the stack voltage acquisition module fixing device according to any one of claims 1 to 9.

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