An inspection voltage acquisition device, a fuel cell, and an inspection system

Abstract

The present invention relates to the technical field of fuel cells, and particularly relates to an inspection voltage acquisition device, a fuel cell, and an inspection system. The inspection system includes the inspection voltage acquisition device and the fuel cell; through the cooperation of the inspection voltage acquisition device and the fuel cell; by connecting the lead wire to the stack, the present invention can avoid excessive contact resistance and poor contact, the voltage acquisition signal is more stable, the error rate is low, and the system stability of the entire stack is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and particularly relates to an inspection voltage acquisition device, a fuel cell, and an inspection system. Background Art

[0002] In existing fuel cell graphite plate stacks, there are mainly two forms of power extraction from the stack. One is contact power extraction, such as using metal rings, probes, etc. to contact the graphite electrode plates for conduction, and the other is to fix wires by applying conductive glue on the graphite electrode plates. Due to the accumulated deviation during stack assembly, for contact power extraction from the electrode plates, the control difficulty is relatively large. Applying conductive glue to fix wires requires graphite bipolar plates. When the size of the graphite bipolar plates is too thin, it is very inconvenient to apply glue to fix the wires. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: to provide a device that can avoid excessive contact resistance and poor contact, has a more stable voltage acquisition signal, a low error rate, and improves the system stability of the entire fuel cell stack.

[0004] To solve the above technical problem, the first technical solution adopted by the present invention is:

[0005] An inspection voltage acquisition device includes a circuit board, an elastic clamping member, an insulating member, a guide post, and an outgoing wire harness;

[0006] The insulating member is arranged on the circuit board, and the elastic clamping member is fixed on the circuit board; a guide hole is arranged on the insulating member, the guide post is arranged corresponding to the guide hole, and the guide post is electrically connected to the circuit board to form a contact point;

[0007] The outgoing wire harness is electrically connected to the circuit board, the wire harness includes a plurality of independent wirings, and the independent wirings are arranged corresponding to the guide posts in an opposing manner.

[0008] Preferably, the elastic clamping member includes a positioning seat, a positioning pin, an insulating pad, and a spring piece;

[0009] One end of the spring piece is connected to the positioning seat, and the other end is fixed on the circuit board through the positioning pin;

[0010] The positioning seat is located above the contact point, the insulating pad is arranged on the positioning seat, and the spring piece drives the insulating pad on the positioning seat to form extrusion on the contact point.

[0011] Preferably, the insulating member is silicone.

[0012] Preferably, the insulating member is adhered to the circuit board.

[0013] To solve the above technical problem, the second technical solution adopted by the present invention is:

[0014] A fuel cell includes a bipolar plate, a membrane electrode assembly, and a lead wire. The bipolar plate or the membrane electrode assembly is provided with a limiting concave platform having a lead-out port. The lead wire includes a body and a connection end. The connection end is arranged in cooperation with the limiting concave platform, and the body is led out through the lead-out port.

[0015] Preferably, the lead wire is a flexible printed circuit. An insulating cured layer is provided outside the body of the lead wire, and the connection end is a metal ring or a metal contact. The other end of the lead wire corresponding to the connection end is a lead-out end, and the lead-out end is a metal ring.

[0016] Preferably, the connection end of the lead wire connected to the limiting concave platform of the bipolar plate is a metal ring;

[0017] The connection end of the lead wire connected to the limiting concave platform of the membrane electrode assembly is a metal contact.

[0018] Preferably, the limiting groove of the bipolar plate corresponding to the metal ring is an annular concave platform with a lead-out port.

[0019] To solve the above technical problems, the third technical solution adopted by the present invention is:

[0020] An inspection system includes the above-mentioned inspection voltage acquisition device and the above-mentioned fuel cell;

[0021] The lead-out end of the lead wire of the fuel cell is clamped on the contact of the guide post by the elastic clamping member of the inspection voltage acquisition device.

[0022] Preferably, the system further includes an inspection bracket, an outer cover, and a connecting member. The inspection bracket is fixed on the fuel cell, the inspection voltage acquisition device is fixed on the inspection bracket, the outer cover is connected to the inspection bracket through the connecting member, and the position of the outer cover is opposite to that of the elastic clamping member when the outer cover is installed.

[0023] The beneficial effects of the present invention are as follows: Connecting the lead wire to the stack can avoid excessive contact resistance and poor contact, the voltage acquisition signal is more stable, the error rate is low, the system stability of the entire stack is improved, and it is convenient for inspection and measurement. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the inspection voltage acquisition device in Embodiment 1;

[0025] Figure 2 It is Figure 1 an exploded view of

[0026] Figure 3 It is an exploded view of the elastic clamping member;

[0027] Figure 4 It is a matching diagram of the bipolar plate and the lead wire of the fuel cell in Embodiment 2;

[0028] Figure 5 is Figure 4 a partial enlarged view of;

[0029] Figure 6 is a mating diagram of the membrane electrode and the lead wire of the fuel cell of the second embodiment;

[0030] Figure 7 is Figure 6 a partial enlarged view of;

[0031] Figure 8 is a schematic structural diagram of a lead wire of a specific embodiment of the present invention;

[0032] Figure 9 is a schematic structural diagram of another lead wire of a specific embodiment of the present invention;

[0033] Figure 10 is a schematic diagram of the specific installation of the third embodiment;

[0034] Figure 11 is Figure 10 a disassembly diagram of;

[0035] Figure 12 is a schematic diagram of the internal arrangement of the third embodiment;

[0036] Reference numeral description: 1, inspection voltage acquisition device; 11, circuit board; 12, elastic clamping member; 121, positioning seat; 122, positioning pin; 123, insulating pad; 124, elastic piece; 13, insulating member; 14, guide post; 15, lead-out wire harness; 2, bipolar plate; 21, limiting concave table; 3, membrane electrode; 4, lead wire; 41, connection end; 42, lead-out end; 5, fuel cell; 6, inspection bracket; 7, outer cover; 8, connecting member. Specific embodiments

[0037] To describe in detail the technical content, achieved purpose and effects of the present invention, the following is described in conjunction with the embodiments and with reference to the accompanying drawings.

[0038] Embodiment 1

[0039] Referring to Figures 1 to 3 , an inspection voltage acquisition device 1 includes a circuit board 11, an elastic clamping member 12, an insulating member 13, a guide post 14 and a lead-out wire harness 15;

[0040] The insulating member 13 is disposed on the circuit board 11, and the elastic clamping member 12 is fixed on the circuit board 11; a guide hole is provided on the insulating member 13, the guide post 14 is correspondingly disposed with the guide hole, and the guide post 14 is electrically connected to the circuit board 11 to form a contact point;

[0041] The exported wire harness 15 is electrically connected to the circuit board 11. The wire harness includes a number of independent wirings, and the independent wirings are oppositely corresponding to the guide posts 14.

[0042] The elastic clamping member 12 includes a positioning seat 121, a positioning pin 122, an insulating pad 123, and a spring piece 124;

[0043] One end of the spring piece 124 is connected to the positioning seat 121, and the other end is fixed to the circuit board 11 through the positioning pin 122;

[0044] The positioning seat 121 is located above the contact, the insulating pad 123 is arranged on the positioning seat 121, and the spring piece 124 drives the insulating pad 123 on the positioning seat 121 to form extrusion on the contact.

[0045] The insulating member 13 is made of silicone. The insulating member 13 is adhered to the circuit board 11.

[0046] The positioning seat 121 is an injection molded part, the positioning pin 122 and the spring piece 124 are riveted and fixed, the insulating pad 123 is a silicone gasket, and the silicone gasket is adhered to the positioning seat 121.

[0047] The circuit board 11 is a circuit PCB board. The guide posts 14 and the wire harness are welded to the circuit PCB board and are conducted through the circuits on the PCB board. The elastic clamping member 12 is welded to the PCB board, and the insulating member 13 is pasted on the PCB board. The number of elastic clamping members 12 can be adjusted to correspond to different numbers of bipolar plates 2 and membrane electrodes 3.

[0048] Embodiment 2

[0049] Refer to Figures 4 to 9 , a fuel cell 5 includes a bipolar plate 2, a membrane electrode 3, and a lead wire 4. The bipolar plate 2 or the membrane electrode 3 is provided with a limiting concave platform 21 with a lead-out port. The lead wire 4 includes a body and a connection end 41. The connection end 41 is arranged in cooperation with the limiting concave platform 21, and the body is led out through the lead-out port.

[0050] The lead wire 4 is a flexible flat cable. An insulating curing layer is arranged outside the body of the lead wire 4. The connection end 41 is a metal ring or a metal contact; the other end of the lead wire 4 corresponding to the connection end 41 is a lead-out end 42, and the lead-out end 42 is a metal ring.

[0051] The connection end 41 of the lead wire 4 connected to the limiting concave platform 21 of the bipolar plate 2 is a metal ring;

[0052] The connection end 41 of the lead wire 4 connected to the limiting concave platform 21 of the membrane electrode 3 is a metal contact.

[0053] The limiting groove of the bipolar plate 2 corresponding to the metal ring is an annular concave platform with a lead-out port.

[0054] When the bipolar plate 2 is glued and pressed together, the flexible flat cable is also pressed together and fixed;

[0055] When the membrane electrode 3 is fixed, the metal contacts are fixed by gluing and pressing.

[0056] Example 3

[0057] Reference Figures 10 to 12 , a patrol inspection system, comprising the patrol inspection voltage acquisition device 1 described in the first embodiment and the fuel cell 5 described in the second embodiment;

[0058] The lead-out end 42 of the lead-out wire 4 of the fuel cell 5 is clamped on the contact point of the guide pillar 14 through the elastic clamping member 12 of the patrol voltage acquisition device 1 .

[0059] The system also includes an inspection bracket 6, an outer cover 7 and a connecting piece 8; the inspection bracket 6 is fixed on the fuel cell 5, the inspection voltage acquisition device 1 is fixed on the inspection bracket 6, and the outer cover 7 is connected to the inspection bracket 6 through the connecting piece 8. When the outer cover 7 is covered, it is opposite to the position of the elastic clamping piece 12.

[0060] When in use, first fix the inspection bracket 6 on the fuel cell 5, then open the positioning seat 121, and then clamp the lead end 42 of the lead wire 4 of the fuel cell 5 on the contact of the guide column 14 through the elastic clamping member 12 of the inspection voltage acquisition device 1, release the positioning seat 121 to form a clamp, and after all the flexible cables are installed, finally cover the cover through the connecting member 8.

[0061] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A patrol inspection voltage acquisition device, characterized in that, It includes a circuit board, an elastic clamping member, an insulating member, a guide post, and a lead-out wire harness; The insulating member is arranged on the circuit board, and the elastic clamping member is fixed on the circuit board; The insulating member is provided with a guide hole, the guide post is arranged corresponding to the guide hole, and the guide post is electrically connected to the circuit board to form a contact point; The lead-out wire harness is electrically connected to the circuit board, the wire harness includes a plurality of independent wiring, and the independent wiring is arranged opposite to the guide post; Wherein, the elastic clamping member includes a positioning seat, a positioning pin, an insulating pad, and a spring piece; One end of the spring piece is connected to the positioning seat, and the other end is fixed on the circuit board through the positioning pin; The positioning seat is located above the contact point, the insulating pad is arranged on the positioning seat, and the spring piece drives the insulating pad on the positioning seat to form extrusion on the contact point.

2. The inspection voltage acquisition device according to claim 1, characterized in that The insulating member is silicone.

3. The inspection voltage acquisition device according to claim 1, characterized in that The insulating member is adhered to the circuit board.

4. A fuel cell, characterized in that, The fuel cell is used in cooperation with the inspection voltage acquisition device according to any one of claims 1-3, and includes a bipolar plate, a membrane electrode, and a lead-out wire. The bipolar plate or the membrane electrode is provided with a limiting concave platform with a lead-out port. The lead-out wire includes a body and a connection end. The connection end is arranged in cooperation with the limiting concave platform, and the body is led out through the lead-out port.

5. The fuel cell according to claim 4, characterized in that, The lead-out wire is a flexible flat cable. An insulating curing layer is arranged outside the body of the lead-out wire, and the connection end is a metal ring or a metal contact point; The other end of the lead-out wire corresponding to the connection end is a lead-out end, and the lead-out end is a metal ring.

6. The fuel cell according to claim 5, wherein, The connection end of the lead-out wire connected to the limiting concave platform of the bipolar plate is a metal ring; The connection end of the lead-out wire connected to the limiting concave platform of the membrane electrode is a metal contact point.

7. The fuel cell according to claim 6, characterized in that, The limiting groove of the bipolar plate corresponding to the metal ring is an annular concave platform with a lead-out port.

8. An inspection system, characterized in that, It includes the inspection voltage acquisition device according to any one of claims 1-3 and the fuel cell according to any one of claims 4-7; The lead-out end of the lead-out wire of the fuel cell is clamped on the contact point of the guide post through the elastic clamping member of the inspection voltage acquisition device.

9. The patrol inspection system according to claim 8, wherein The system further includes an inspection bracket, an outer cover, and a connecting member; The inspection bracket is fixed on the fuel cell, the inspection voltage acquisition device is fixed on the inspection bracket, the outer cover is connected to the inspection bracket through the connecting member, and the position of the outer cover is opposite to that of the elastic clamping member when the outer cover is installed.

Images