CN220106969U - Connection structure for connecting electric pile and voltage inspection device and fuel cell system - Google Patents
Connection structure for connecting electric pile and voltage inspection device and fuel cell system Download PDFInfo
- Publication number
- CN220106969U CN220106969U CN202321761963.4U CN202321761963U CN220106969U CN 220106969 U CN220106969 U CN 220106969U CN 202321761963 U CN202321761963 U CN 202321761963U CN 220106969 U CN220106969 U CN 220106969U
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- voltage
- voltage inspection
- inspection
- interface
- inspection device
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- 238000007689 inspection Methods 0.000 title claims abstract description 144
- 239000000446 fuel Substances 0.000 title claims abstract description 17
- 239000004020 conductor Substances 0.000 claims abstract description 71
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical group [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000005404 monopole Effects 0.000 abstract 1
- 239000000306 component Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Fuel Cell (AREA)
Abstract
The utility model relates to the technical field of fuel cells, and discloses a connecting structure for connecting a galvanic pile and a voltage inspection device and a fuel cell system, wherein an elastic conductor is fixedly sleeved outside the end part of an inspection acquisition needle, and then the elastic conductor is inserted into a voltage inspection interface, so that the elastic conductor is elastically deformed and is prevented from falling out of the voltage inspection interface by utilizing a limiting surface; because the electric conduction characteristic of the elastic conductor, the elastic conductor is contacted with the inner wall of the voltage inspection interface, and the end face of the end part of the inspection collection needle exposed out of the elastic conductor is contacted with the inner wall of the voltage inspection interface, so that the inspection collection needle and the single cell can be electrically connected. When the monopole board vibrates, even if the end face of the end part of the inspection collection needle is separated from the inner wall of the voltage inspection interface, the inspection collection needle and the single cell can be electrically connected through the contact of the elastic conductor and the inner wall of the voltage inspection interface, and the accuracy of the voltage detection of the pile is improved.
Description
Technical Field
The present utility model relates to the field of fuel cells, and in particular, to a connection structure for connecting a stack and a voltage inspection device, and a fuel cell system.
Background
The electric stack is a core component of the fuel cell, and is formed by stacking a plurality of unit cells and connecting the unit cells in series, each of which independently operates and outputs electric power to the outside, so that the safety of the unit cells is critical. Voltage tracking of the cells is necessary to ensure proper operation of the fuel cell.
At present, a voltage inspection structure is generally adopted to detect the voltage of a single cell, and specifically, the voltage inspection structure comprises an inspection connector, and the inspection connector is fixed on a bipolar plate in a pasting mode. However, when the fuel cell is used in the whole vehicle in practical application, vibration is generated when the whole vehicle runs, the inspection connector is very easy to move relative to the bipolar plate, and even the contact with the bipolar plate can be disconnected, so that the voltage of the single cell can not be acquired, and the voltage detection of the fuel cell is inaccurate.
Disclosure of Invention
The utility model aims to provide a connecting structure for connecting a pile with a voltage inspection device and a fuel cell system, which can improve the connection stability between the pile and the voltage inspection device and improve the accuracy of pile voltage detection.
To achieve the purpose, the utility model adopts the following technical scheme:
a connection structure for connecting pile and voltage inspection device includes:
a voltage inspection interface is formed between two adjacent single cells of the electric pile, and a limiting surface is formed on the inner wall of the voltage inspection interface;
the voltage inspection device comprises an inspection assembly, the inspection assembly comprises an inspection collection needle and an elastic conductor, the elastic conductor is fixedly sleeved outside the end part of the inspection collection needle, the end face of the end part is exposed out of the elastic conductor, the elastic conductor can be inserted into the voltage inspection interface and elastically abutted to the limiting surface so as to limit the elastic conductor from the voltage inspection interface to be separated, and the end face can be in contact with the inner wall of the voltage inspection interface.
As a preferable technical scheme of the connecting structure for connecting the electric pile and the voltage inspection device, the bipolar plate of the electric pile comprises two unipolar plates, and the voltage inspection interface is formed between the two unipolar plates.
As an preferable technical scheme of the connection structure for connecting the galvanic pile and the voltage inspection device, an inspection groove is formed in the surface of one of the bipolar plates, and the inspection groove is provided with an opening facing to the other of the bipolar plates and surrounding the other of the bipolar plates to form the voltage inspection interface.
As a preferable technical scheme of the connecting structure for connecting the galvanic pile and the voltage inspection device, two inspection grooves with opposite openings are formed in the two unipolar plates of the bipolar plate, and the two inspection grooves of the bipolar plate enclose the voltage inspection interface.
As a preferable technical scheme of the connecting structure for connecting the galvanic pile and the voltage inspection device, the diameter of the inspection collection needle is 0.6-0.7 mm.
As a preferable technical scheme of the connecting structure for connecting the galvanic pile and the voltage inspection device, the cross section of the elastic conductor is round, oval, square or rectangular, and the cross section is a plane vertical to the axial direction of the elastic conductor.
As a preferable technical scheme of the connecting structure for connecting the galvanic pile and the voltage inspection device, the wall thickness of the elastic conductor is 0.25-0.7 mm.
As a preferable technical scheme of the connecting structure for connecting the galvanic pile and the voltage inspection device, the elastic conductor is a beryllium copper structural member.
As a preferable technical scheme of the connecting structure for connecting the galvanic pile and the voltage inspection device, the elastic conductor is welded and fixed with the inspection collecting needle.
In order to achieve the above object, the present utility model further provides a fuel cell system, which includes a connection structure for connecting a stack and a voltage inspection device according to any one of the above aspects.
The utility model has the beneficial effects that: according to the connecting structure for connecting the electric pile and the voltage inspection device and the fuel cell system, the elastic conductor is fixedly sleeved outside the end part of the inspection collecting needle, then the elastic conductor is inserted into the voltage inspection interface, so that the elastic conductor is elastically deformed and restrained in the voltage inspection interface by the limiting surface, and the elastic conductor is prevented from falling out of the voltage inspection interface by the limiting surface; because of the conductive characteristic of the elastic conductor, the elastic conductor is in contact with the inner wall of the voltage inspection interface, so that the inspection collection needle and the single cell can be electrically connected; the end face of the end part of the inspection collection needle is exposed out of the elastic conductor, and the end face is in contact with the inner wall of the voltage inspection interface, so that the inspection collection needle and the single cell can be electrically connected. When the whole vehicle of using operates, when the unipolar board takes place to vibrate, even the terminal surface of the tip of inspection collection needle and the inner wall separation of interface is patrolled and examined to voltage, can also ensure to patrol and examine collection needle and single cell electricity and be connected through the inner wall contact of interface is patrolled and examined to elastic conductor and voltage, improves the accuracy that the galvanic pile voltage detected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a side view of a bipolar plate provided by an embodiment of the present utility model;
fig. 2 is a schematic plugging diagram of a voltage inspection device and a bipolar plate according to an embodiment of the present utility model;
fig. 3 is a cross-sectional view taken along A-A of fig. 1.
In the figure:
1. a bipolar plate; 11. an anode plate; 12. a cathode plate; 13. a voltage inspection interface; 131. a bus; 132. a long axis; 133. a contour line; 134. presetting an axis;
2. a patrol and examine acquisition needle; 3. an elastic conductor.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1 to 3, the present embodiment provides a connection structure for connecting a cell stack and a voltage inspection device, including a cell stack and a voltage inspection device, wherein the cell stack is formed by stacking a plurality of single cells in series and press-fitting, each single cell includes an anode plate 11, a cathode plate 12 and a membrane electrode disposed between the anode plate 11 and the cathode plate 12, and the anode plate 11 of one single cell and the cathode plate 12 of another single cell are adjacently disposed and connected to form a bipolar plate 1. Illustratively, the anode plate 11 and the cathode plate 12 are fixed to form the bipolar plate 1 by welding.
The voltage inspection device comprises a plurality of inspection components, the plurality of inspection components are respectively used for performing voltage inspection on the plurality of single cells and collecting voltage signals of each single cell, the voltage inspection device further comprises a voltage inspection device, the voltage inspection device is electrically connected with the whole vehicle controller, the voltage inspection device is used for calculating the total voltage of the electric pile, and the whole vehicle controller is convenient to monitor the running state of the fuel cell according to the total voltage of the electric pile.
A voltage inspection interface 13 is formed between two adjacent single cells of the electric pile, and a limiting surface is formed on the inner wall of the voltage inspection interface 13; the inspection assembly comprises an inspection collection needle 2 and an elastic conductor 3, wherein the elastic conductor 3 is fixedly sleeved outside the end part of the inspection collection needle 2, the end face of the end part is exposed out of the elastic conductor 3, the elastic conductor 3 can be inserted into the voltage inspection interface 13 and elastically abutted against the limiting surface so as to limit the elastic conductor 3 to deviate from the voltage inspection interface 13, and the end face can be in contact with the inner wall of the voltage inspection interface 13.
The elastic conductor 3 is fixedly sleeved outside the end part of the inspection acquisition needle 2, then the elastic conductor 3 is inserted into the voltage inspection interface 13, so that the elastic conductor 3 is elastically deformed and restrained in the voltage inspection interface 13 by a limiting surface, and the elastic conductor 3 is prevented from falling out of the voltage inspection interface 13 by the limiting surface; due to the conductive characteristic of the elastic conductor 3, the elastic conductor 3 is in contact with the inner wall of the voltage inspection interface 13, so that the inspection collection needle 2 and the single cell can be electrically connected; the end face of the end part of the inspection collection needle 2 is exposed out of the elastic conductor 3, and the end face is in contact with the inner wall of the voltage inspection interface 13, so that the inspection collection needle 2 and the single cell can be electrically connected. When the whole vehicle of using operates, when the unipolar board takes place to vibrate, even the terminal surface of the tip of inspection collection needle 2 and the inner wall separation of interface 13 is patrolled and examined to the voltage, can also ensure to patrol and examine collection needle 2 and single cell electricity through the inner wall contact of interface 13 is patrolled and examined to the elastic conductor 3, improves the accuracy that the galvanic pile voltage detected. The inspection collection needle 2 has small volume and is particularly suitable for the bipolar plate 1 with thinner thickness.
Optionally, the bipolar plate 1 comprises two unipolar plates, between which a voltage patrol interface 13 is formed. Illustratively, two unipolar plates of the bipolar plate 1 are provided with inspection grooves with opposite openings, and the two inspection grooves of the bipolar plate 1 enclose a voltage inspection interface 13. The two unipolar plates of the bipolar plate 1 can be respectively provided with a patrol groove in a stamping mode, the two unipolar plates are connected, and the openings of the two patrol grooves are correspondingly enclosed to form the voltage patrol interface 13.
In other embodiments, a routing inspection groove may be further disposed on the surface of one of the unipolar plates of the bipolar plate 1, where the routing inspection groove has an opening facing and enclosing a voltage routing inspection interface 13 with the other unipolar plate, and when the two unipolar plates of the bipolar plate 1 are connected, the opening facing the unipolar plate of the routing inspection groove is blocked by the side surface of one unipolar plate to form the voltage routing inspection interface 13.
In other embodiments, for stacks employing monopolar plates instead of bipolar plates 1, the voltage routing interface 13 is provided on either the anode plate 11 or the cathode plate 12, and cannot be provided on both the anode plate 11 and the cathode plate 12.
Optionally, one end of the inspection collection needle 2 inserted into the elastic conductor 3 extends out of the elastic conductor 3, so as to facilitate contact between the elastic conductor 3 and the inner wall of the voltage inspection interface 13. In other embodiments, the end face of the inspection collection needle 2 inserted into one end of the elastic conductive body 3 may be flush with the axial end face of the elastic conductive body 3.
Optionally, the elastic conductor 3 is welded and fixed with the inspection collection needle 2, so that the connection is reliable, the connection reliability requirement of the elastic conductor 3 and the inspection collection needle 2 can be met, and poor connection between the inspection collection needle 2 and the bipolar plate 1 under the conditions of vibration, impact and the like is avoided, so that abnormal conditions of load reduction, shutdown and the like of a fuel cell due to misjudgment of a whole vehicle controller caused by failure of a voltage collection signal are avoided.
Alternatively, the diameter of the inspection collection needle 2 is 0.6 mm-0.7 mm, and the wall thickness of the elastic conductor 3 is 0.25 mm-0.7 mm. The plug between the elastic conductor 3 and the voltage inspection interface 13 can be realized by adopting a plug force of about 3N, the connection mode is simple, and the plug is convenient. Alternatively, the diameter of the patrol sampling needle 2 may take any value of 0.6mm, 0.61mm, 0.62mm, 0.63mm, 0.64mm, 0.65mm, 0.66mm, 0.67mm, 0.68mm, 0.69mm, and 0.7mm. The wall thickness of the elastic conductor 3 may take any value of 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, 0.6mm, 0.65mm and 0.7mm.
Optionally, the elastic conductor 3 is a metal structural member, such as a beryllium copper structural member, and the elastic conductor 3 and the inspection collection needle 2 can be fixed in an ultrasonic welding manner, so that the connection reliability of the elastic conductor 3 and the inspection collection needle 2 is improved. In addition, insert the elastic conductor 3 in the voltage inspection interface 13 in-process, the inner wall of voltage inspection interface 13 can extrude the outer wall of elastic conductor 3 to make elastic conductor 3 take place certain elastic deformation, and after elastic conductor 3 gets into voltage inspection interface 13 completely, can resume deformation, make elastic conductor 3 and the spacing face butt of voltage inspection interface 13, in order to prevent that elastic conductor 3 from deviating from voltage inspection interface 13, improve the connection stability between elastic conductor 3 and the voltage inspection interface 13.
Alternatively, the cross section of the elastic conductor 3 is circular, elliptical, square or rectangular, and the cross section is a plane perpendicular to the axial direction of the elastic conductor 3. The cross section of the elastic electrical conductor 3 is illustratively elliptical.
The inspection groove comprises a first groove and a second groove connected with the first groove, the first groove is a semi-elliptical groove, the second groove is formed by rotating a bus bar 131 around a preset axis 134 by 180 degrees, wherein the preset axis 134 extends along the plugging direction of the elastic conductor 3 and the voltage inspection interface 13, and the bus bar 131 is an arc line formed by concavely arranging one side of the preset axis 134 from the side where the preset axis 134 is located. The major axis 132 of the oval and the contour line 133 on one side of the major axis 132 scan a distance along a predetermined axis 134 to form a first slot. In order to form the limiting surface, the two ends of the interval between the bus 131 and the preset axis 134 along the extending direction of the preset axis 134 are small, and the middle is large, and the connecting position of the first groove and the second groove forms the limiting surface.
The present embodiment also provides a fuel cell system including the above connection structure for connecting the stack and the voltage inspection device, which has the same advantageous effects as the above connection structure for connecting the stack and the voltage inspection device, and will not be described again.
Furthermore, the foregoing description of the preferred embodiments and the principles of the utility model is provided herein. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (10)
1. A connection structure for connecting electric pile and voltage inspection device, its characterized in that includes:
a voltage inspection interface (13) is formed between two adjacent single cells of the electric pile, and a limiting surface is formed on the inner wall of the voltage inspection interface (13);
the utility model provides a voltage inspection device, includes the subassembly that patrols and examines, the subassembly that patrols and examines includes to patrol and examine collection needle (2) and elastic conductor (3), elastic conductor (3) fixedly overlaps and locate patrol and examine collection needle (2) the tip outside just the terminal surface of tip expose in elastic conductor (3), elastic conductor (3) can insert in voltage inspection interface (13) and elasticity butt in spacing face, in order to restrict elastic conductor (3) follow voltage inspection interface (13) deviate from, the terminal surface can with the inner wall contact of interface (13) is patrolled and examined to the voltage.
2. The connection structure for connecting a galvanic pile with a voltage inspection device according to claim 1, characterized in that the bipolar plate (1) of the galvanic pile comprises two monopolar plates between which the voltage inspection interface (13) is formed.
3. The connection structure for connecting a galvanic pile with a voltage inspection device according to claim 2, characterized in that the surface of one of the bipolar plates (1) is provided with an inspection groove having an opening facing and enclosing the voltage inspection interface (13) with the other of the bipolar plates.
4. The connection structure for connecting a galvanic pile with a voltage inspection device according to claim 2, wherein two unipolar plates of the bipolar plate (1) are provided with inspection grooves with opposite openings, and the two inspection grooves of the bipolar plate (1) enclose the voltage inspection interface (13).
5. The connection structure for connecting a galvanic pile with a voltage inspection device according to claim 1, characterized in that the diameter of the inspection collection needle (2) is 0.6 mm-0.7 mm.
6. The connection structure for connecting a galvanic pile with a voltage inspection device according to claim 1, characterized in that the cross section of the elastic electrical conductor (3) is circular, oval, square or rectangular, and the cross section is a plane perpendicular to the axial direction of the elastic electrical conductor (3).
7. The connection structure for connecting a galvanic pile with a voltage inspection device according to claim 1, characterized in that the wall thickness of the elastic electrical conductor (3) is 0.25 mm-0.7 mm.
8. The connection structure for connecting a galvanic pile with a voltage inspection device according to claim 1, characterized in that the elastic electrical conductor (3) is a beryllium copper structure.
9. The connection structure for connecting a galvanic pile with a voltage inspection device according to claim 1, characterized in that the elastic electrical conductor (3) is welded and fixed with the inspection collection needle (2).
10. A fuel cell system comprising the connection structure for connecting a stack and a voltage inspection device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321761963.4U CN220106969U (en) | 2023-07-06 | 2023-07-06 | Connection structure for connecting electric pile and voltage inspection device and fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321761963.4U CN220106969U (en) | 2023-07-06 | 2023-07-06 | Connection structure for connecting electric pile and voltage inspection device and fuel cell system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220106969U true CN220106969U (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321761963.4U Active CN220106969U (en) | 2023-07-06 | 2023-07-06 | Connection structure for connecting electric pile and voltage inspection device and fuel cell system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220106969U (en) |
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2023
- 2023-07-06 CN CN202321761963.4U patent/CN220106969U/en active Active
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