CN115939785A - Voltage detection connecting structure based on ultrathin bipolar plate and assembling method thereof - Google Patents
Voltage detection connecting structure based on ultrathin bipolar plate and assembling method thereof Download PDFInfo
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- CN115939785A CN115939785A CN202310014888.3A CN202310014888A CN115939785A CN 115939785 A CN115939785 A CN 115939785A CN 202310014888 A CN202310014888 A CN 202310014888A CN 115939785 A CN115939785 A CN 115939785A
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- bipolar plate
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- voltage detection
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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
Abstract
The invention provides a voltage detection connecting structure based on an ultrathin bipolar plate and an assembling method thereof, wherein the voltage detection connecting structure comprises: the connecting structure is arranged between the bipolar plate and the lead and is respectively connected with the bipolar plate and the lead; the connecting structure comprises an adhesive part, a wiring part and a positioning part, wherein the positioning part is attached to the edge of the bipolar plate and matched with the edge of the bipolar plate in shape, the adhesive part is attached to the bipolar plate through conductive glue, the wiring part is connected with a lead, and the positioning part is arranged between the adhesive part and the wiring part. The invention has simple structure and stable connection, can realize the single-section voltage detection of the fuel cell stack in a very limited space, and can avoid the problem of low reliability caused by vibration, corrosion and the like.
Description
Technical Field
The invention relates to the technical field of fuel cell monolithic voltage detection, in particular to a voltage detection connection structure based on an ultrathin bipolar plate and an assembly method thereof.
Background
Fuel cells are clean energy sources that convert chemical energy directly into electrical energy. The proton exchange membrane fuel cell has the characteristics of absolute cleanness, high efficiency and low noise, and is environment-friendly. However, due to the low voltage generated by the fuel cell monoliths, hundreds of monoliths are often required to be stacked in series to achieve higher overall voltages. Therefore, it is also necessary to monitor the voltage of each single chip during the operation of the fuel cell under the current preparation process and operation conditions, so as to prevent the problems of too low voltage or even reverse polarity of a certain single chip.
As the thickness of the fuel cell sheet is greatly reduced, it is an important process to connect the bipolar plate to a sheet voltage detection device in order to detect the voltage of the fuel cell sheet in a very limited space. The design of monolithic voltage connectors requires considerable demands on reliability, convenience, space saving, etc. In the prior art, the connector is mainly divided into a sheet connector and a spring connector according to the connector connection mode. The two connection modes have a common problem that the bipolar plate and the connector have certain intermittence, and voltage detection connection is realized by utilizing resilience or pressing force, but the reliability of the connection modes is greatly reduced under the condition of strong external vibration on a vehicle. Meanwhile, the contact interface is easy to corrode due to possible external influences such as damp heat, salt spray, anti-freezing solution corrosion and the like, so that the voltage detection is invalid.
Disclosure of Invention
The invention aims to provide a voltage detection connecting structure based on an ultrathin bipolar plate and an assembling method thereof, which have the advantages of simple structure, stable connection, capability of realizing single-cell voltage detection of a fuel cell stack in a very limited space and capability of avoiding the problem of low reliability caused by vibration, corrosion and the like.
In order to achieve the purpose, the invention provides the following scheme:
a voltage detection connection structure based on an ultrathin bipolar plate comprises a connection structure arranged between the bipolar plate and a lead, wherein the connection structure is respectively connected with the bipolar plate and the lead;
the connecting structure comprises an adhesive part, a wire connecting part and a positioning part, wherein the positioning part is attached to the edge of the bipolar plate and is matched with the edge of the bipolar plate in shape, the adhesive part is adhered to the bipolar plate through conductive glue, the wire connecting part is connected with the lead, and the positioning part is arranged between the adhesive part and the wire connecting part.
Further, the bonding portion is bonded to the cathode, anode or cooling surface of the side of the bipolar plate by conductive glue.
Further, the wiring portion is connected to the lead by welding or crimping.
Further, the adhesive portion, the wire connecting portion and the positioning portion are integrally formed from a thin metal plate by punching and/or shearing.
Further, the conductive adhesive is a mixture of tiny conductive metal particles and/or mixed tiny graphite particles and a binder.
Further, the wire is connected with the inspection controller.
The invention also provides an assembling method of the voltage detection connecting structure based on the ultrathin bipolar plate, which is applied to the voltage detection connecting structure based on the ultrathin bipolar plate and comprises the following steps:
abutting the locating portion of the connecting structure against the edge of the bipolar plate;
coating conductive adhesive on any surface of the bonding part of the connecting structure, bonding the bonding part with the bipolar plate after the positioning part is bonded and positioned with the bipolar plate, and finishing curing;
after the bipolar plate is assembled, connecting the wiring part of the connecting structure with a lead;
and cutting off the positioning part along the edge of the bipolar plate to complete the assembly of the connecting structure.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: according to the voltage detection connecting structure based on the ultrathin bipolar plate and the assembling method thereof, the connecting structure is respectively connected with the bipolar plate and the connecting lead, the bipolar plate is conducted with the connecting structure by means of the conductive adhesive, and a completely sealed environment is formed, so that compared with the prior art, the connecting structure has a better anti-vibration effect, and connection failure caused by vibration is avoided; since there is no gap between the connection structure and the bipolar plate, the problems of corrosion, etc. no longer exist. The invention can also realize automatic bonding in a screen printing mode, greatly reduces the manual production cost, improves the production efficiency and meets the requirement of large-scale mass production.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view of an assembly structure of an ultra-thin bipolar plate-based voltage detection connection structure according to the present invention;
FIG. 2a is a schematic plan view of the initial state of the connection structure of the present invention;
FIG. 2b is a schematic perspective view of the connection structure of the present invention in an initial state;
FIG. 3a is a schematic diagram of a connection structure in a middle state;
FIG. 3b is a schematic perspective view of the connection structure of the present invention in an intermediate state;
FIG. 4a is a schematic perspective view of the final state of the connection structure of the present invention;
FIG. 4b is a schematic side view of the final state of the connection structure of the present invention;
FIG. 5 is a schematic process flow diagram of the assembly method of the ultra-thin bipolar plate based voltage detection connection structure of the present invention;
reference numerals are as follows: 1. a bipolar plate; 2. a connecting structure; 3. a wire; 4. an adhesive portion; 5. a wiring portion; 6. a positioning portion; 7. and (6) bonding surface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a voltage detection connection structure based on an ultrathin bipolar plate and an assembly method thereof, which have the advantages of simple structure, stable connection, capability of realizing single-section voltage detection of a fuel cell stack in a very limited space and capability of avoiding the problem of low reliability caused by vibration, corrosion and the like.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the voltage detection connection structure based on ultra-thin bipolar plate provided by the present invention comprises: the connecting structure 2 is arranged between the bipolar plate 1 and a lead 3, and the connecting structure 2 is respectively connected with the bipolar plate 1 and the lead 3;
as shown in fig. 2a to 4b, the connection structure 2 comprises an adhesive part 4, a terminal part 5 and a positioning part 6, the positioning part 6 is attached to the edge of the bipolar plate 1 and is adapted to the shape of the edge of the bipolar plate 1, the adhesive part 4 is attached to the bipolar plate 1 by means of an electrically conductive adhesive, the terminal part 5 is connected to the conductor wire 3, and the positioning part 6 is arranged between the adhesive part 4 and the terminal part 5. The wiring portion 5 is connected with the lead 3, so that the voltage when the electric pile works can be detected by the voltage single-section detection device, and the positioning portion 6 is an auxiliary positioning component in the installation process, and is cut after the installation is finished, as shown in fig. 4a, and is not appeared on the electric pile device.
Wherein the adhesive portion 4 is adhered to the cathode, anode or cooling surface of the side of the bipolar plate 1 by conductive adhesive. The surface of the bonding part 4 coated with the conductive adhesive is a bonding surface 7.
The wiring portion 5 is connected to the lead 3 by means of soldering or crimping, or the like. The lead 3 is further connected with an inspection controller.
The adhesive portion 4, the wire connecting portion 5 and the positioning portion 6 are integrally formed from a thin metal plate by punching and/or shearing.
The conductive adhesive is a mixture of tiny conductive metal particles and/or mixed tiny graphite particles and a binder. Because the content of the conductive particles is high, the conductive particles are contacted with each other to form a conductive path and have an adhesive function.
As shown in fig. 5, the present invention further provides an assembling method of a voltage detection connection structure based on an ultra-thin bipolar plate, which is applied to the voltage detection connection structure based on an ultra-thin bipolar plate, and comprises the following steps:
abutting the locating portion of the connecting structure against the edge of the bipolar plate;
coating conductive adhesive on any surface of the bonding part of the connecting structure, bonding the bonding part with the bipolar plate after the positioning part is bonded and positioned with the bipolar plate, and finishing curing;
after the bipolar plate is assembled, connecting the wiring part of the connecting structure with a lead;
and cutting off the positioning part along the edge of the bipolar plate to complete the assembly of the connecting structure.
Finally, the wiring part is connected with a lead, so that the voltage of the electric pile during operation can be detected by the voltage single-section detection equipment.
According to the voltage detection connecting structure based on the ultrathin bipolar plate and the assembling method thereof, the connecting structure is respectively connected with the bipolar plate and the connecting lead, the bipolar plate is conducted with the connecting structure by means of the conductive adhesive, and a completely sealed environment is formed, so that compared with the prior art, the connecting structure has a better anti-vibration effect, and connection failure caused by vibration is avoided; since there is no gap between the connection structure and the bipolar plate, the problems of corrosion, etc. no longer exist. The invention can also realize automatic bonding in a screen printing mode, greatly reduces the manual production cost, improves the production efficiency and meets the requirement of large-scale mass production.
The principle and the embodiment of the present invention are explained by applying specific examples, and the above description of the embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. A voltage detection connection structure based on an ultra-thin bipolar plate is characterized by comprising: the connecting structure is arranged between the bipolar plate and the lead and is respectively connected with the bipolar plate and the lead;
the connecting structure comprises an adhesive part, a wire connecting part and a positioning part, wherein the positioning part is attached to the edge of the bipolar plate and is matched with the edge of the bipolar plate in shape, the adhesive part is adhered to the bipolar plate through conductive glue, the wire connecting part is connected with the lead, and the positioning part is arranged between the adhesive part and the wire connecting part.
2. The ultra-thin bipolar plate-based voltage sensing connection structure of claim 1, wherein the adhesive part is adhered to a cathode, an anode or a cooling surface of a side of the bipolar plate by a conductive adhesive.
3. The ultra-thin bipolar plate-based voltage sensing connection structure as claimed in claim 1, wherein the terminal portion is connected to the lead wire by welding or crimping.
4. The ultra-thin bipolar plate-based voltage sensing connection structure of claim 1, wherein the adhesive portion, the wire connection portion and the positioning portion are integrally formed from a thin metal plate by punching and/or shearing.
5. The ultra-thin bipolar plate-based voltage sensing connection structure of claim 1, wherein the conductive paste is a mixture of fine conductive metal particles and/or mixed fine graphite particles with a binder.
6. The ultra-thin bipolar plate-based voltage detection connection structure of claim 1, wherein the wire is connected to an inspection controller.
7. An assembling method of a voltage detection connection structure based on an ultra-thin bipolar plate, which is applied to the voltage detection connection structure based on the ultra-thin bipolar plate as claimed in any one of claims 1 to 6, is characterized by comprising the following steps:
abutting the positioning part of the connecting structure against the edge of the bipolar plate;
coating conductive adhesive on any surface of the bonding part of the connecting structure, bonding the bonding part with the bipolar plate after the positioning part is bonded and positioned with the bipolar plate, and finishing curing;
after the bipolar plate is assembled, connecting the wiring part of the connecting structure with a lead;
and cutting off the positioning part along the edge of the bipolar plate to complete the assembly of the connecting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310014888.3A CN115939785B (en) | 2023-01-06 | 2023-01-06 | Voltage detection connection structure based on ultrathin bipolar plate and assembly method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310014888.3A CN115939785B (en) | 2023-01-06 | 2023-01-06 | Voltage detection connection structure based on ultrathin bipolar plate and assembly method thereof |
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| CN115939785A true CN115939785A (en) | 2023-04-07 |
| CN115939785B CN115939785B (en) | 2023-05-30 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109844989A (en) * | 2016-11-18 | 2019-06-04 | 矢崎总业株式会社 | The holding structure of voltage detection terminal |
| CN111289901A (en) * | 2018-12-06 | 2020-06-16 | 中国科学院大连化学物理研究所 | Fuel cell stack voltage inspection structure and method |
| CN112803196A (en) * | 2020-12-30 | 2021-05-14 | 东风汽车集团有限公司 | Electrical connection structure of fuel cell voltage inspection system |
| CN214797809U (en) * | 2021-04-26 | 2021-11-19 | 海卓动力(青岛)能源科技有限公司 | Connecting terminal for connecting fuel cell and inspection system |
| CN215815949U (en) * | 2021-08-18 | 2022-02-11 | 珠海格力电器股份有限公司 | Connection structure of fuel cell bipolar plate and inspection system and fuel cell |
| CN114220998A (en) * | 2021-12-17 | 2022-03-22 | 上海重塑能源科技有限公司 | Voltage inspection plug-in, single cell with voltage inspection part and voltage inspection device |
| CN217009242U (en) * | 2022-03-29 | 2022-07-19 | 佛山市清极能源科技有限公司 | A patrol and examine structure for fuel cell bipolar plate |
| CN115224320A (en) * | 2021-03-31 | 2022-10-21 | 未势能源科技有限公司 | Fuel cell voltage detection structure, bipolar plate with fuel cell voltage detection structure and fuel cell |
-
2023
- 2023-01-06 CN CN202310014888.3A patent/CN115939785B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109844989A (en) * | 2016-11-18 | 2019-06-04 | 矢崎总业株式会社 | The holding structure of voltage detection terminal |
| US20190252739A1 (en) * | 2016-11-18 | 2019-08-15 | Yazaki Corporation | Voltage detection terminal holding structure |
| CN111289901A (en) * | 2018-12-06 | 2020-06-16 | 中国科学院大连化学物理研究所 | Fuel cell stack voltage inspection structure and method |
| CN112803196A (en) * | 2020-12-30 | 2021-05-14 | 东风汽车集团有限公司 | Electrical connection structure of fuel cell voltage inspection system |
| CN115224320A (en) * | 2021-03-31 | 2022-10-21 | 未势能源科技有限公司 | Fuel cell voltage detection structure, bipolar plate with fuel cell voltage detection structure and fuel cell |
| CN214797809U (en) * | 2021-04-26 | 2021-11-19 | 海卓动力(青岛)能源科技有限公司 | Connecting terminal for connecting fuel cell and inspection system |
| CN215815949U (en) * | 2021-08-18 | 2022-02-11 | 珠海格力电器股份有限公司 | Connection structure of fuel cell bipolar plate and inspection system and fuel cell |
| CN114220998A (en) * | 2021-12-17 | 2022-03-22 | 上海重塑能源科技有限公司 | Voltage inspection plug-in, single cell with voltage inspection part and voltage inspection device |
| CN217009242U (en) * | 2022-03-29 | 2022-07-19 | 佛山市清极能源科技有限公司 | A patrol and examine structure for fuel cell bipolar plate |
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