Quick connecting device for fuel cell stack and inspection module

By using support rods and printed circuit board designs in fuel cell systems, and using spring pins and wire-end connectors to achieve quick connections, the problem of complex and low accuracy of traditional connection methods is solved, and efficient and reliable connection and detection is achieved. , simplifies operational processes and reduces costs.

CN222189344UActive Publication Date: 2024-12-17SHANGHAI ELECTRICGROUP CORP
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Patent Information

Application Number
CN202420399297.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-01
Publication Date
2024-12-17
Estimated Expiration
2034-03-01

AI Technical Summary

Technical Problem

In the existing fuel cell systems, traditional connection methods cannot achieve fast connection and detection, and in large quantities, jumping or misconnection is prone to occur, resulting in insufficient voltage detection accuracy, complex and time-consuming connection.

Method used

A quick connection device is designed, using a support rod and a printed circuit board, and the quick connection is achieved through multiple pinholes and spring pins. The wire end connector corresponds one by one to the spring pins to ensure that each wire harness has a corresponding connection point. Avoid confusion and misalignment between wire harnesses, and improves the accuracy and reliability of the connection.

Benefits of technology

The rapid connection and disassembly of the fuel cell and the voltage inspection module are realized, the connection process is simplified, the connection efficiency is improved, the connection stability and reliability are ensured, the failure and maintenance costs are reduced, the connection device layout is optimized, and the connection device is optimized. It is more compact and stable.

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Abstract

The utility model discloses a quick connecting device for a fuel cell stack and an inspection module, and belongs to the technical field of fuel cells. Comprising a support rod arranged along the height direction of a galvanic pile; a plurality of printed circuit boards are sequentially arranged in the length direction of the supporting rod, a plurality of needle holes are formed in the welding face of each printed circuit board, and the needle holes are formed in the length direction of the printed circuit boards at equal intervals; the spring needles are in one-to-one correspondence with the needle holes and are inserted into the needle holes; and the wire end connector is provided with wire harness interfaces which are in one-to-one connection with the spring needles. The technical scheme has the beneficial effects that by adopting the technical scheme, the spring needle is welded on the circuit board, and the wire end connector is welded on the circuit board, so that the quick connection between the fuel cell and the voltage inspection module is realized, the layout of the connecting device is optimized, and the reliability and the stability of connection are improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a quick connection device for a fuel cell stack and an inspection module. Background Art

[0002] At present, fuel cell systems are widely used in industries such as industry and transportation. In order to ensure the normal operation of the fuel cell system, it is necessary to monitor the voltage of each single cell in the stack. In order to understand the working condition of each single cell, it is necessary to lead out a signal line on each pair of bipolar plates and connect it to the voltage inspection module. A stack needs hundreds of signal lines, which is very complicated. The traditional way is to add a signal line jack on the bipolar plate, and then insert the signal lines of the voltage inspection module into the jacks on the corresponding plates one by one in sequence, or add a metal sheet to the plate, and then weld the signal lines to the metal sheet one by one. The connection is difficult and time-consuming.

[0003] In the prior art, the traditional connection method cannot achieve fast connection and detection; Chinese patent publication number CN113176433A discloses a fuel cell voltage inspection device, which adopts an elastic pre-tightened contact method, does not require welding and preset holes, and can be effectively used in the inspection of graphite plate fuel cell stacks, but the structure of the device is complex; Chinese patent publication number CN113176432A discloses a fuel cell voltage inspection device, which solves the current problems of poor contact between the fuel cell inspection line and the bipolar plate, easy loosening due to impact vibration, inconvenient disassembly and assembly of the connection in the inspection collection connector, and too many separate wiring harnesses for voltage signal collection and processing, resulting in insufficient voltage detection accuracy, but the device cannot be fine-tuned. In the case of a large number, the cumulative error is large, and jump connection or misconnection is prone to occur. Utility Model Content

[0004] The purpose of the utility model is to provide a quick connection device for a fuel cell stack and an inspection module to solve the above technical problems;

[0005] A quick connection device for a fuel cell stack and an inspection module, comprising:

[0006] Support rods are arranged along the height direction of the battery stack;

[0007] A plurality of printed circuit boards are sequentially arranged along the length direction of the support rod, and each printed circuit board has a soldering surface provided with:

[0008] A plurality of pinholes are arranged at equal intervals along the length direction of the printed circuit board;

[0009] A plurality of spring pins, corresponding to the pin holes one by one, and inserted into the pin holes;

[0010] The wire end connector is provided with a wire harness interface, and the wire harness interface is connected one-to-one with the spring pins.

[0011] Preferably, the pinholes are arranged along the edge positions on both sides of the printed circuit board, and the hole spacing between two adjacent pinholes is twice the thickness of the single battery.

[0012] Preferably, the distance between the pinhole and the edge of the printed circuit board is 0.5 mm to 1.5 mm.

[0013] Preferably, the line end connector is arranged in the middle of the welding surface, and the line end connector includes two rows of wiring harness interfaces arranged along the length direction of the printed circuit board.

[0014] Preferably, the spring needle comprises a needle cylinder, in which there is provided:

[0015] Needles;

[0016] A spring, one end of which is connected to the needle, and the other end of which is connected to the top of the syringe;

[0017] The spring pins are in elastic contact with the bipolar plates in the fuel cell.

[0018] Preferably, the welding surface is further provided with a positioning hole, and the support rod is provided with a fixing hole corresponding to the positioning hole.

[0019] Preferably, two adjacent printed circuit boards are seamlessly connected.

[0020] Preferably, both ends of the support rod are connected to the front end plate and the rear end plate of the fuel cell stack.

[0021] Preferably, mounting holes are provided at both ends of the support rod, and mounting screws are passed through the mounting holes.

[0022] The beneficial effect of the utility model is that: due to the adoption of the above technical scheme, spring pins are used, welded on the circuit board, and a wired end connector is welded on the circuit board, so as to realize the rapid connection between the fuel cell and the voltage inspection module, optimize the layout of the connection device, and improve the reliability and stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a side view of the utility model;

[0024] Figure 2 It is a top view of the utility model;

[0025] Figure 3 It is an overall schematic diagram of the utility model;

[0026] Figure 4It is a schematic diagram of the spring pin of the utility model in contact with the bipolar plate of the fuel cell;

[0027] Figure 5 This is a schematic diagram of the utility model being fixed as a whole on a battery stack;

[0028] Figure 6 It is a structural schematic diagram of the spring pin of the utility model.

[0029] In the attached figure: 1, needle; 2, syringe; 3, spring; 4, spring needle; 5, printed circuit board; 51, pinhole; 52, positioning hole; 6, wire end connector; 61, wiring harness interface; 7, rear end plate; 8, support rod; 81, mounting hole; 82, fixing hole; 9, membrane electrode edge; 10, bipolar plate; 11, mounting screw; 12, front end plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0033] A quick connection device for a fuel cell stack and an inspection module, such as Figures 1 to 3 As shown, including,

[0034] The support rod 8 is arranged along the height direction of the battery stack;

[0035] A plurality of printed circuit boards 5 are sequentially arranged along the length direction of the support rod 8, and each printed circuit board 5 has a soldering surface provided thereon.

[0036] A plurality of pinholes 51 are arranged at equal intervals along the length direction of the printed circuit board 5;

[0037] A plurality of spring pins 4, corresponding to the pin holes 51 one by one, are inserted into the pin holes 51;

[0038] The wire end connector 6 is provided with a wire harness interface 61 , and the wire harness interface 61 is connected to the spring pin 4 in a one-to-one manner.

[0039] Specifically, the utility model provides a quick connection device for a fuel cell stack and an inspection module. Two rows of spring pins 4 are welded on a printed circuit board 5, and the fuel cell inspection module is quickly connected to the stack by using the spring pins 4. This connection method is fast and reliable, optimizes the layout of the connection device, simplifies the connection process, and improves the connection efficiency.

[0040] More specifically, the fuel cell and the voltage inspection module can be quickly connected and disassembled, making the installation and maintenance of the inspection module more convenient, saving time and labor costs.

[0041] More specifically, it can effectively prevent poor contact or looseness during the plugging and unplugging process, ensuring that the voltage inspection module can accurately read the voltage condition of the battery stack.

[0042] In a preferred embodiment, the pinholes 51 are arranged along the edge positions of both sides of the printed circuit board 5, and the hole spacing between two adjacent pinholes 51 is twice the thickness of the single battery.

[0043] Specifically, the hole spacing between adjacent pinholes 51 avoids the interference problem between the spring pins 4 due to the small battery pitch; the spring pins 4 are soldered on the printed circuit board 5 through the patch, and similarly, the wire end connection socket, that is, the wire end connector 6 is also soldered on the printed circuit board 5, and the wire end connection and the spring pins 4 correspond one by one in sequence.

[0044] In a preferred embodiment, referring to Figure 2 The distance between the pinhole 51 and the edge of the printed circuit board 5 is 0.5 mm to 1.5 mm.

[0045] Specifically, the reliability and stability of the battery stack can be increased, and interference problems between the spring pins 4 due to too small a pitch can be avoided.

[0046] In a preferred embodiment, the wire end connector 6 is disposed in the middle of the welding surface, and the wire end connector 6 includes two rows of wiring harness interfaces 61 disposed along the length direction of the printed circuit board 5, which can save space and improve connection efficiency.

[0047] In a preferred embodiment, referring to Figure 4 , Figure 6 The spring needle 4 includes a syringe 2, in which there is a

[0048] Needle 1;

[0049] A spring 3, one end of the spring 3 is connected to the needle 1, and the other end of the spring 3 is connected to the top of the syringe 2;

[0050] The spring pins 4 are in elastic contact with the bipolar plates 10 in the fuel cell.

[0051] Specifically, a stable connection between the needle 1 and the syringe 2 is ensured to prevent loosening or disconnection during use, thereby ensuring the reliability of the connection; the spring 3 has a certain elasticity, which can ensure good contact between the spring needle 4 and the bipolar plate 10, thereby improving the efficiency of current transmission; each spring needle 4 is in contact with the bipolar plate 10 corresponding to the fuel cell, which means that there are multiple contact points, increasing the contact area, reducing the contact resistance, and improving the stability and efficiency of current transmission, wherein the thickness of a single cell is equal to the thickness of the bipolar plate 10 plus the membrane electrode edge 9.

[0052] More specifically, the number of spring pins 4 corresponds to the number of wiring harnesses of the wire end connector 6, ensuring that each wiring harness has a corresponding spring pin 4 for connection, avoiding confusion and misalignment between wiring harnesses, and improving the accuracy and reliability of the connection.

[0053] In a preferred embodiment, referring to Figure 2 , Figure 3 A positioning hole 52 is also provided on the welding surface, and a fixing hole 82 corresponding to the positioning hole 52 is provided on the support rod 8.

[0054] Specifically, there are four oblong holes on the printed circuit board 5, which are used to position and install the printed circuit board 5 on the support rod 8. The error can be adjusted during installation. In one embodiment, the positioning holes 52 are respectively located at the upper left corner, upper right corner, lower left corner and lower right corner of the line end connector 6. The positioning holes 52 are aligned one by one with the fixing holes 82, which can ensure that the printed circuit board 5 is firmly connected to the support rod 8 to prevent it from loosening or falling off.

[0055] In a preferred embodiment, two adjacent printed circuit boards 5 are seamlessly connected.

[0056] Specifically, a plurality of printed circuit boards 5 are sequentially arranged on the support rod 8 along the length direction of the support rod 8 , making the connection device more compact and stable, and facilitating the connection of the wiring harness.

[0057] In a preferred embodiment, referring to Figure 5 , both ends of the support rod 8 are connected to the front end plate 12 and the rear end plate 7 of the stack;

[0058] Both ends of the support rod 8 are provided with mounting holes 81 , and mounting screws 11 are passed through the mounting holes 81 .

[0059] Specifically, through the use of the mounting holes 81 and the mounting screws 11, the support rod 8 can be firmly connected to the two end plates of the fuel cell stack, thereby providing additional support and stability, preventing movement or loosening during use, and ensuring the normal operation and safety of the fuel cell stack.

[0060] In the first embodiment, the hole spacing of the spring pin 4 is determined according to the pitch of the battery stack, the hole spacing of the spring pin 4 is twice the battery stack pitch, the first pinhole 51 and the last pinhole 51 are closer to the edge of the printed circuit board 5 than half of the battery stack pitch, ranging from 0.5mm to 1.5mm, and then the length of each printed circuit board 5 is determined according to the number of battery stack sections, and the number of pinholes 51 on each board is determined. When it is encountered that a printed circuit board 5 cannot be completely installed, ensure that the total number of pinholes 51 is greater than the number of battery stack sections required, and the excess spring pins 4 on the last board can be removed during installation.

[0061] Solder the spring pin 4 to the corresponding hole on the printed circuit board 5, ensure the patch welding accuracy, and prevent tilting and bending. Solder the wire end connector 6 in the middle of the printed circuit board 5, and install the prepared printed circuit board 5 on the support rod 8. The support rod 8 is made of insulating material, such as FR-4, PPS, nylon, etc. There is a hole corresponding to the positioning hole 52 on the support rod 8, that is, the fixing hole 82.

[0062] Pre-install the entire support rod 8 on the front end plate 12 and the rear end plate 7 of the fuel cell stack to ensure that the spring pins 4 are in contact with the fuel cell bipolar plates 10 one by one. If necessary, the position of each printed circuit board 5 can be adjusted individually to ensure that each spring pin 4 corresponds to a bipolar plate 10 without poor contact or false connection. Lock the support rod 8, the installation is completed, and the CVM (fuel cell single chip voltage patrol meter) line end is connected to the line end on the printed circuit board 5 according to the sequence to complete the connection work of the CVM module.

[0063] In summary, the present application provides a quick connection device for a fuel cell stack and an inspection module, which adopts a quick connection method of a spring pin 4 and a wire end connector 6, which can greatly shorten the connection time, improve the connection efficiency, simplify the connection process, and reduce the operation complexity and technical requirements; it achieves a stable and reliable connection, avoids poor contact or looseness during the plugging and unplugging process, ensures the stability and reliability of the connection, and reduces failures and maintenance costs; it achieves rapid connection and disassembly of the fuel cell and the voltage inspection module, making the installation and maintenance of the inspection module more convenient, saving time and labor costs; it optimizes the layout of the connection device, making it more compact and stable, which helps to improve the reliability and performance of the overall system.

[0064] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick connection device for a fuel cell stack and an inspection module, characterized in that: include, A support rod (8) is arranged along the height direction of the battery stack; A plurality of printed circuit boards (5) are sequentially arranged along the length direction of the support rod (8), and a soldering surface of each printed circuit board (5) is provided with: A plurality of pinholes (51) are arranged at equal intervals along the length direction of the printed circuit board (5); A plurality of spring pins (4), corresponding one to one with the pin holes (51) and inserted into the pin holes (51); The wire end connector (6) is provided with a wire harness interface (61), and the wire harness interface (61) is connected one-to-one with the spring pin (4).

2. The quick connection device for a fuel cell stack and an inspection module according to claim 1, characterized in that: The pinholes (51) are arranged along the edge positions of both sides of the printed circuit board (5), and the hole spacing between two adjacent pinholes (51) is twice the thickness of a single battery.

3. The quick connection device for a fuel cell stack and an inspection module according to claim 2, characterized in that: The distance between the pinhole (51) and the edge of the printed circuit board (5) is 0.5 mm to 1.5 mm.

4. The quick connection device for a fuel cell stack and an inspection module according to claim 1, characterized in that: The line end connector (6) is arranged in the middle of the welding surface, and the line end connector (6) comprises two rows of wire harness interfaces (61) arranged along the length direction of the printed circuit board (5).

5. The quick connection device for a fuel cell stack and an inspection module according to claim 1, characterized in that: The spring needle (4) comprises a needle cylinder (2), wherein the needle cylinder (2) is provided with: Needle (1); A spring (3), one end of the spring (3) is connected to the needle (1), and the other end of the spring (3) is connected to the top of the syringe (2); The spring pin (4) is in elastic contact with a bipolar plate (10) in a fuel cell.

6. The quick connection device for a fuel cell stack and an inspection module according to claim 1, characterized in that: The welding surface is also provided with a positioning hole (52), and the support rod (8) is provided with a fixing hole (82) corresponding to the positioning hole (52).

7. The quick connection device for a fuel cell stack and an inspection module according to claim 1, characterized in that: Two adjacent printed circuit boards (5) are seamlessly connected.

8. The quick connection device for a fuel cell stack and an inspection module according to claim 1, characterized in that: The two ends of the support rod (8) are connected to the front end plate (12) and the rear end plate (7) of the fuel cell stack.

9. The quick connection device for a fuel cell stack and an inspection module according to claim 8, characterized in that: Both ends of the support rod (8) are provided with mounting holes (81), and mounting screws (11) are inserted into the mounting holes (81).