CN220106588U - Vanadium battery pile sealing structure and vanadium battery pile - Google Patents
Vanadium battery pile sealing structure and vanadium battery pile Download PDFInfo
- Publication number
- CN220106588U CN220106588U CN202320507510.2U CN202320507510U CN220106588U CN 220106588 U CN220106588 U CN 220106588U CN 202320507510 U CN202320507510 U CN 202320507510U CN 220106588 U CN220106588 U CN 220106588U
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- sealing
- plates
- vanadium battery
- bipolar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 102
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 28
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 230000000694 effects Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000003681 vanadium Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a vanadium battery stack sealing structure and a vanadium battery stack, comprising two outer cover plates and a plurality of bipolar plates sequentially overlapped between the two outer cover plates, wherein sealing ring grooves are arranged on both sides of the bipolar plates, and the sealing ring grooves on both sides of the bipolar plates are staggered; a sealing ring is arranged in the sealing ring groove, and extends out of the surface of the bipolar plate; when the outer cover plate and the bipolar plate are in an assembled state, the sealing ring is extruded to the surface of the adjacent bipolar plate, and the section of the sealing ring is round or round-corner rectangular. The utility model optimizes the rectangular cross section design of the sealing gasket into a round or round rectangular design, so that the surface contact between the sealing gasket and the electrode plates is reduced, the pressure after assembly is reduced, and the problem that the total thickness of the battery is increased due to the fact that the sealing ring is placed between the electrode plates is avoided while the pressure after assembly is reduced due to the novel sealing ring structure.
Description
Technical Field
The utility model relates to a vanadium battery pack sealing structure and a vanadium battery pack, and belongs to the technical field of vanadium battery pack sealing.
Background
The vanadium battery stack is formed by stacking a plurality of bipolar plates, and electrolyte is arranged between the adjacent bipolar plates, so that a safe and reliable sealing structure is required to be arranged between the bipolar plates. The conventional sealing design of the vanadium battery stack is to place rubber gaskets between electrode plates, wherein the shape of the rubber gaskets is the same as that of the electrode plates, and the gaskets are compressed and deformed by external pressure to form a sealing effect. The design not only increases the total thickness of the battery, but also needs to be sealed by compressing and deforming the sealing gasket through great pressure because of the surface contact between the rubber gasket and the electrode plate, and the sealing gasket can be permanently deformed under the action of high pressure for a long time, so that the leakage occurs because of losing the sealing performance.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide a vanadium battery stack sealing structure and a vanadium battery stack, and solves the technical problems of overlarge internal pressure and larger thickness after battery sealing in the prior art.
In order to achieve the above object, the present utility model adopts the following technical scheme:
the sealing structure of the vanadium battery stack comprises two outer cover plates and a plurality of bipolar plates which are sequentially overlapped between the two outer cover plates, wherein sealing ring grooves are formed in two sides of each bipolar plate, and the sealing ring grooves on two sides of each bipolar plate are staggered;
a sealing ring is arranged in the sealing ring groove, and extends out of the surface of the bipolar plate;
when the outer cover plate and the bipolar plate are in an assembled state, the sealing ring is extruded to the surface of the adjacent bipolar plate.
Preferably, in the sealing structure of a vanadium battery stack, the cross section of the sealing ring is round or rounded rectangle.
Preferably, in the sealing structure of a vanadium battery stack, the sealing ring groove is in clearance fit with the sealing ring.
Preferably, in the sealing structure of the vanadium battery stack, the sealing ring is a rubber sealing ring.
A vanadium battery stack comprises the sealing structure of the vanadium battery stack.
The utility model has the beneficial effects that:
the utility model has the following two advantages, namely, the pressure of the rubber for generating compression deformation is reduced. The rectangular cross section design of the sealing gasket is optimized to be round or round rectangular, so that the surface contact between the sealing gasket and the electrode plate is reduced, the pressure after assembly is reduced, and the sufficient release space and sealing effect of the rubber sealing gasket during compression deformation are met by optimizing the sizes of the sealing gasket and the sealing groove.
Secondly, the newly designed sealing ring structure reduces the pressure after assembly and simultaneously avoids the problem that the total thickness of the battery is increased due to the fact that the sealing rings are placed between the electrode plates.
Drawings
FIG. 1 is an exploded view of the present utility model;
FIG. 2 is a diagram of the overall architecture of the present utility model;
FIG. 3 is a schematic cross-sectional view I (seal ring cross-section is rounded rectangle) of the present utility model;
FIG. 4 is a schematic diagram of a second cross-section of the present utility model (the cross-section of the seal ring is circular);
meaning of reference numerals in the drawings: 1-an outer cover plate; 2-bipolar plates; 3-a sealing ring; 21-a seal ring groove. .
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
As shown in fig. 1 to 4: the embodiment discloses a vanadium battery stack sealing structure, which comprises two outer cover plates 1 and a plurality of bipolar plates 2 which are sequentially overlapped between the two outer cover plates 1. The bipolar plate 2 has some circuits therein, including wires, various sensors, etc., and is therefore also commonly referred to as a plate; the outer cover plate 1 is the outer cover plate of the whole battery pack.
The two sides of the bipolar plate 2 are provided with sealing ring grooves 21, and the sealing ring grooves 21 positioned at the two sides of the bipolar plate 2 are staggered in order to ensure the strength of the bipolar plate 2 because the thickness of the bipolar plate 2 is smaller, the sealing ring grooves 21 are internally provided with sealing rings 3, and the sealing rings 3 extend out of the surface of the bipolar plate 2; i.e. the part of the sealing ring 3 is raised above the surface of the bipolar plate 2, typically the diameter of the part of the sealing ring 3 located inside the sealing ring groove 21 is 60-80%, i.e. 20-40% of the diameter of the sealing ring 3 is raised above the surface of the bipolar plate 2.
When the outer cover plate 1 and the bipolar plate 2 are in an assembled state, the sealing ring 3 is pressed to the surface of the adjacent bipolar plate 2. Because the sealing rings 3 on the two sides of the bipolar plates 2 are not symmetrically arranged, the sealing rings 3 of the bipolar plates 2 after being attached can be staggered, and double sealing can be formed between two adjacent bipolar plates 2.
Referring to fig. 3 and 4, in the present embodiment, the cross section of the seal ring 3 is circular or rectangular with rounded corners. The radial expansion performance of the sealing ring 3 with the circular section is better, and the sealing width of the sealing ring 3 with the round-angle rectangular section after extrusion is wider, so that the sealing effect is better, and in practical application, when the clearance precision requirement between the sealing pieces of the battery pack is higher or the sealing grade requirement is higher, the sealing ring 3 with the circular section is better to be selected. When the accuracy of the gap between the battery seals is not very high, i.e. a relatively large gap is possible, it is preferable to use a gasket 3 with a rectangular cross-section with rounded corners.
In order to ensure the normal expansion and contraction of the seal ring 3, the seal ring groove 21 and the seal ring 3 are in clearance fit. Therefore, the sealing ring 3 can be prevented from being crushed in the extrusion process, and the service life of the sealing structure is prolonged. The sealing ring 3 is preferably a rubber sealing ring.
After assembly, the two outer cover plates 1 and the bipolar plates 2 between the two outer cover plates 1 are assembled by fixing means, which are usually screws penetrating the outer edges of the outer cover plates 1 and the bipolar plates 2, and under the action of these screws, all the bipolar plates 2 and the outer cover plates 1 on both sides form a whole. The bipolar plates 2 are sealed by the sealing rings 3, and as the sealing rings 3 are arranged on the two sides of the bipolar plates 2 and the sealing rings 3 on the two sides are in staggered arrangement, when the bipolar plates 2 are arranged in the same direction, the double sealing effect between the adjacent bipolar plates 2 can be achieved, and the sealing reliability is ensured.
The embodiment also discloses a vanadium battery stack, which comprises the sealing structure of the vanadium battery stack.
The present embodiment has the following two main advantages over the prior art, namely, the reduction of the compression deformation pressure of rubber. The rectangular cross section design of the sealing gasket is optimized to be round or round rectangular, so that the surface contact between the sealing gasket and the electrode plate is reduced, the pressure after assembly is reduced, and the sufficient release space and sealing effect of the rubber sealing gasket during compression deformation are met by optimizing the sizes of the sealing gasket and the sealing groove.
Secondly, the newly designed sealing ring structure reduces the pressure after assembly and simultaneously avoids the problem that the total thickness of the battery is increased due to the fact that the sealing rings are placed between the electrode plates.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (5)
1. The vanadium battery pile sealing structure is characterized by comprising two outer cover plates (1) and a plurality of bipolar plates (2) which are sequentially overlapped between the two outer cover plates (1), wherein sealing ring grooves (21) are formed in two sides of each bipolar plate (2), and the sealing ring grooves (21) on two sides of each bipolar plate (2) are staggered;
a sealing ring (3) is arranged in the sealing ring groove (21), and the sealing ring (3) extends out of the surface of the bipolar plate (2);
when the outer cover plate (1) and the bipolar plate (2) are in an assembled state, the sealing ring (3) is extruded to the surface of the adjacent bipolar plate (2).
2. A vanadium battery stack sealing structure according to claim 1, characterized in that the cross section of the sealing ring (3) is circular or rounded rectangular.
3. A sealing arrangement for a vanadium battery stack according to claim 1 or 2, characterized in that the sealing ring groove (21) is in a clearance fit with the sealing ring (3).
4. A vanadium battery stack sealing structure according to claim 1 or 2, characterized in that the sealing ring (3) is a rubber sealing ring.
5. A vanadium cell stack comprising a vanadium cell stack sealing structure according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320507510.2U CN220106588U (en) | 2023-03-16 | 2023-03-16 | Vanadium battery pile sealing structure and vanadium battery pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320507510.2U CN220106588U (en) | 2023-03-16 | 2023-03-16 | Vanadium battery pile sealing structure and vanadium battery pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220106588U true CN220106588U (en) | 2023-11-28 |
Family
ID=88882571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320507510.2U Active CN220106588U (en) | 2023-03-16 | 2023-03-16 | Vanadium battery pile sealing structure and vanadium battery pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220106588U (en) |
-
2023
- 2023-03-16 CN CN202320507510.2U patent/CN220106588U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2010100906A1 (en) | Polymer electrolyte type fuel cell gasket | |
| EP2445046B1 (en) | Fuel cell sealing structure | |
| US8628894B2 (en) | Fuel cell sealing structure comprising stepped gas diffusion layers | |
| CN102867974B (en) | Sealing structure and electric pile of liquid flow battery | |
| CN106374129B (en) | Flow battery pile sealing structure | |
| EP3007259B1 (en) | Fuel cell sealing structure | |
| EP1302996A3 (en) | Polymer electrolyte fuel cell | |
| US8927174B2 (en) | Sealing structure of fuel cell | |
| CN102365780A (en) | Compression arrangement for fuel or electrolysis cells in a fuel cell stack or an electrolysis cell stack | |
| CN1636283A (en) | Battery construction having cover assembly and method therefor | |
| CN220106588U (en) | Vanadium battery pile sealing structure and vanadium battery pile | |
| CN115084569A (en) | Bipolar plate sealing structure and fuel cell | |
| CN113346102A (en) | Sealing structure for bipolar plate of fuel cell | |
| JP2005108565A (en) | Sealing structure for fuel cell | |
| CN112490466A (en) | Novel multi-peak fuel cell sealing structure | |
| CN202817105U (en) | Seal structure of flow battery and electric pile thereof | |
| CN111048704A (en) | Device for preventing electrolyte of lead-acid storage battery from leaking | |
| JP2011154791A (en) | Square battery | |
| CN110649277B (en) | Fuel cell, half-plate and design method thereof | |
| CN218548489U (en) | Sealing strip for bipolar plate of hydrogen fuel cell | |
| US20110159398A1 (en) | Low compressive load seal design for solid polymer electrolyte fuel cell | |
| CN207517791U (en) | A kind of sealing device of fuel cell | |
| CN220821634U (en) | Battery cell and battery stack | |
| CN216624348U (en) | Novel multi-peak fuel cell sealing structure | |
| CN217468498U (en) | Novel hydrogen energy fuel cell sealing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |