CN222320297U - Diaphragm structure of flow battery - Google Patents
Diaphragm structure of flow battery Download PDFInfo
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- CN222320297U CN222320297U CN202420086980.0U CN202420086980U CN222320297U CN 222320297 U CN222320297 U CN 222320297U CN 202420086980 U CN202420086980 U CN 202420086980U CN 222320297 U CN222320297 U CN 222320297U
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- 239000012528 membrane Substances 0.000 claims description 47
- 210000000998 shell membrane Anatomy 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 abstract description 23
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 3
- 239000003792 electrolyte Substances 0.000 description 11
- 238000007789 sealing Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011149 active material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 229940021013 electrolyte solution Drugs 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000013543 active substance Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 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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Abstract
本实用新型公开了一种液流电池的隔膜结构，其包括安装板和曲面隔膜，所述安装板上设置有通孔二，所述曲面隔膜的边缘贴设于安装板的一侧，并将通孔二封堵，所述曲面隔膜包括半球壳隔膜，所述半球壳隔膜和通孔二同轴，所述半球壳隔膜的敞口端直径不小于通孔二的孔径。有益效果：本实用新型的技术方案通过弧形框架配合安装板支撑曲面隔膜，曲面隔膜的厚度可以设计的较薄，曲面隔膜的表面积略大于弧形框架的支撑面的面积，这样即便液流电池轻微的晃动或碰撞产生形变，曲面隔膜也有足够的余量去消耗这一形变，有效防止隔膜破裂；此外，弧形框架支撑曲面隔膜可保证曲面隔膜始终保持较大的接触反应面积，使液流电池的性能得到充分发挥。
The utility model discloses a diaphragm structure of a liquid flow battery, which includes a mounting plate and a curved diaphragm, wherein the mounting plate is provided with a second through hole, the edge of the curved diaphragm is attached to one side of the mounting plate and blocks the second through hole, and the curved diaphragm includes a hemispherical shell diaphragm, wherein the hemispherical shell diaphragm is coaxial with the second through hole, and the open end diameter of the hemispherical shell diaphragm is not less than the aperture of the second through hole. Beneficial effect: The technical solution of the utility model supports the curved diaphragm through an arc frame in cooperation with the mounting plate, the thickness of the curved diaphragm can be designed to be thinner, and the surface area of the curved diaphragm is slightly larger than the area of the supporting surface of the arc frame, so that even if the liquid flow battery is slightly shaken or collided to produce deformation, the curved diaphragm has enough margin to consume the deformation, effectively preventing the diaphragm from rupturing; in addition, the curved frame supporting the curved diaphragm can ensure that the curved diaphragm always maintains a large contact reaction area, so that the performance of the liquid flow battery can be fully exerted.
Description
Technical Field
The utility model relates to the field of flow batteries, in particular to a diaphragm structure of a flow battery.
Background
The flow battery is an electrochemical energy storage technology proposed by Thaller in 1974, and is a new storage battery. The flow battery consists of a galvanic pile unit, electrolyte, an electrolyte storage and supply unit, a management control unit and the like, wherein the galvanic pile unit comprises an anode current collector, a bipolar plate, a confluence frame, a positive plate, an anode reaction cavity, a porous diaphragm, a negative reaction cavity, a negative plate, a negative current collector and a shell, the flow battery is a high-performance storage battery which separates positive and negative electrolyte by using a diaphragm and circulates each time, has the characteristics of high capacity, wide application field (environment) and long circulating service life, and is a new energy product.
The flow battery realizes the mutual conversion of electric energy and chemical energy through the reversible oxidation-reduction reaction (namely the reversible change of valence state) of the positive and negative electrode electrolyte solution active substances by utilizing the diaphragm. During charging, the anode generates oxidation reaction to raise the valence state of the active material, the cathode generates reduction reaction to lower the valence state of the active material, and the discharging process is opposite to the oxidation reaction. Unlike a typical solid state battery, the positive and/or negative electrolyte solutions of the flow battery are stored in a storage tank outside the battery and are delivered to the inside of the battery through pumps and pipes for reaction.
The separator is one of the key materials in a flow battery, and is mainly used for separating positive and negative electrolyte of the battery, and only electrolyte ions pass through to prevent the two electrodes from contacting to short-circuit.
In general, the thinner the thickness of the membrane design in the flow battery is, the better the thickness of the membrane is, the higher the reaction rate of the flow battery is, the higher the output power of the battery is, but the thinner the thickness of the membrane is, the worse the strength is, the membrane can be broken by slight shaking or collision deformation of the flow battery, so the thickness of the membrane design in the flow battery is generally moderate and cannot be too thin at present, the reaction rate of the flow battery is limited, and the performance of the flow battery cannot be fully exerted.
In addition, in some flow batteries, in order to simply pursue thinner membrane thickness, a fixing plate is used for installing and fixing the membrane so as to prevent the membrane from being broken caused by slight shaking or collision deformation of the flow battery, although the technical means realizes the technical effects of thinner membrane thickness design and difficult membrane breakage, the existence of the fixing plate greatly increases the volume of the flow battery and reduces the volume energy density of the flow battery, which is contrary to the technical development path pursuing smaller volume and larger volume energy density of the current flow battery, and the existence of the fixing plate severely reduces the contact reaction area of the membrane, so that the reaction rate of the flow battery is greatly reduced, the output power of the flow battery is reduced, the quality performance of the flow battery is not high, and the practical popularization and application are difficult.
Disclosure of utility model
The utility model mainly aims to provide a diaphragm structure of a flow battery, and aims to solve the problem that the existing flow battery is limited by the thickness of a diaphragm and cannot fully exert the performance.
In order to solve the problems, the utility model provides a diaphragm structure of a flow battery, which comprises a mounting plate and a curved diaphragm, wherein a second through hole is formed in the mounting plate, and the edge of the curved diaphragm is attached to one side of the mounting plate and seals the second through hole.
In an embodiment, the curved diaphragm comprises a hemispherical shell diaphragm, the hemispherical shell diaphragm and the through hole II are coaxial, and the diameter of the open end of the hemispherical shell diaphragm is not smaller than the aperture of the through hole II.
In an embodiment, an installation ring is attached to one side of the installation plate, and the edge of the curved diaphragm is attached to the outer wall of the installation ring and seals the second through hole.
In one embodiment, the mounting ring and the second through hole are coaxial;
The curved diaphragm further comprises an annular diaphragm connected to the edge of the opening of the hemispherical shell diaphragm, and the annular diaphragm and the hemispherical shell diaphragm are coaxial and integrally formed;
the annular diaphragm is tightly sleeved on the outer wall of the mounting ring.
In an embodiment, the outer wall of the mounting ring is a conical surface, and the outer diameter of one end of the mounting ring, which is contacted with the mounting plate, is larger than the outer diameter of the other end of the mounting ring.
In an embodiment, the inner wall of the mounting ring is a conical surface, and the inner diameter of one end of the mounting ring, which is contacted with the mounting plate, is larger than the inner diameter of the other end of the mounting ring.
In an embodiment, an arc-shaped rod is arranged on the inner wall of the hemispherical shell diaphragm in an extending mode along the warp, and two ends of the arc-shaped rod are fixedly adjacent to the inner wall of the mounting ring.
In one embodiment, the arc-shaped rod is provided with a plurality of bonding points in point contact with the inner wall of the hemispherical shell diaphragm, and the bonding points are distributed on the arc-shaped rod at equal intervals.
In an embodiment, the plurality of arc rods are distributed in a central symmetry manner by taking the central axis of the hemispherical shell diaphragm as the center, and the plurality of arc rods are mutually matched to form an arc frame.
In an embodiment, the second through hole is coaxial with the mounting plate, and a plurality of first through holes which are distributed in a central symmetry manner with the second through hole as a center are arranged at the edge of the mounting plate.
The technical scheme of the utility model has the beneficial effects that the curved diaphragm is supported by the arc-shaped frame formed by a plurality of arc-shaped rods matched with the mounting plate, and compared with the conventional planar diaphragm, the design of the curved diaphragm increases the contact reaction area of the diaphragm, improves the reaction rate of the flow battery, increases the output power of the flow battery and improves the quality performance of the flow battery;
According to the technical scheme, the curved diaphragm is supported by the arc-shaped frame in cooperation with the mounting plate, the thickness of the curved diaphragm can be designed to be thinner, the surface area of the curved diaphragm is slightly larger than the area of the supporting surface of the arc-shaped frame, so that even if the flow battery is slightly shaken or collided to generate deformation, the curved diaphragm has enough allowance to consume the deformation, and the diaphragm is effectively prevented from being broken;
According to the technical scheme, the curved diaphragm is supported by the arc-shaped frame in cooperation with the mounting plate, the thickness of the arc-shaped frame and the thickness of the mounting plate are designed to be thinner, the volume of the flow battery can not be increased remarkably, and the volume energy density of the flow battery is not changed greatly.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a membrane structure of a flow battery according to the present utility model;
FIG. 2 is a schematic diagram of a separator structure of a flow battery according to the present utility model;
FIG. 3 is a schematic illustration of the bonding of an arcuate stem and a hemispherical separator of the present utility model;
FIG. 4 is a schematic view of the mounting plate of the present utility model;
fig. 5 is a schematic diagram of a second embodiment of the mounting plate of the present utility model.
The reference numerals are explained as follows:
1. the mounting plate comprises a mounting plate body, a mounting plate, a first through hole, a second through hole, a mounting ring and a second through hole;
5. A curved diaphragm, 51, a hemispherical shell diaphragm, 52, an annular diaphragm;
6. arc rod, and adhesive point.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present utility model), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "fixed," and the like are to be construed broadly, and for example, "fixed" may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The utility model provides a diaphragm structure of a flow battery, which supports a curved diaphragm 5 through an arc-shaped frame formed by a plurality of arc-shaped rods 6 matched with a mounting plate 1, and the design of the curved diaphragm 5 increases the contact reaction area of the diaphragm compared with a conventional plane diaphragm, so that the reaction rate of the flow battery is improved, the output power of the flow battery is increased, and the quality performance of the flow battery is improved; in addition, the curved diaphragm 5 is supported by the curved frame in cooperation with the mounting plate 1, the thickness of the curved diaphragm 5 can be designed to be thinner, the surface area of the curved diaphragm 5 is slightly larger than the area of a supporting surface of the curved frame, so that even if the flow battery is slightly vibrated or collided to deform, the curved diaphragm 5 has enough margin to consume the deformation, and the diaphragm is effectively prevented from being broken, in addition, the curved diaphragm 5 is supported by the curved frame, the curved diaphragm 5 can be ensured to always keep larger contact reaction area, so that the performance of the flow battery is fully exerted, and the curved diaphragm 5 is supported by the curved frame in cooperation with the mounting plate 1, the thickness of the curved frame and the mounting plate 1 is designed to be thinner, the volume of the flow battery is not remarkably increased, and the volume energy density of the flow battery is not greatly changed.
Specifically, in an embodiment of the utility model, as shown in fig. 1, fig. 4 and fig. 5, the membrane structure of the flow battery includes a mounting plate 1 and a curved membrane 5, where the mounting plate 1 is a flat plate, and in general, the mounting plate 1 is a rectangular plate, so as to adapt to the shapes of a positive current collector, a bipolar plate, a bus frame, a positive plate, a positive reaction chamber, a porous membrane, a negative reaction chamber, a negative plate, a negative current collector and a housing of the flow battery stack.
Further, as shown in fig. 4 and 5, the edge of the mounting plate 1 is provided with a plurality of through holes one 2, and the plurality of through holes one 2 are penetrated by the mounting rod of the flow battery stack, so that the mounting plate 1 is convenient to mount.
In this embodiment, as shown in fig. 4 and fig. 5, the mounting plate 1 is provided with the through hole two 3, the electrolyte is supplied to penetrate through the mounting plate 1 by the through hole two 3, the curved diaphragm 5 is located at one side of the mounting plate 1, and the edge of the curved diaphragm 5 is tightly attached to one side of the mounting plate 1, so that the through hole two 3 is plugged, the electrolyte located at one side of the mounting plate 1 penetrates through the through hole two 3 and then goes to the other side of the mounting plate 1, then performs ion exchange with the electrolyte at the other side of the curved diaphragm 5, the electrolytes at two sides of the curved diaphragm 5 are not in contact with each other, and compared with the conventional planar diaphragm, the contact reaction area of the diaphragm is increased by the design of the curved diaphragm 5, the reaction rate of the flow battery is improved, the output power of the flow battery is increased, and the quality performance of the flow battery is improved.
Further, in this embodiment, as shown in fig. 1, the curved diaphragm 5 includes a half spherical shell diaphragm 51, and the diameter of the open end of the half spherical shell diaphragm 51 is not smaller than the aperture of the second through hole 3, so that the open end of the half spherical shell diaphragm 51 can be directly bonded and sealed with the hole wall of the second through hole 3 or bonded and sealed with the side surface of the mounting plate 1 to separate the electrolyte on both sides of the mounting plate 1 and the half spherical shell diaphragm 51.
Preferably, the hemispherical shell diaphragm 51 and the through hole II 3 are coaxial, so that the hemispherical shell diaphragm 51 and the through hole II 3 are convenient to be bonded and sealed and connected, the operation difficulty of bonding connection is reduced, and the bonding operation cost is reduced.
In this embodiment, preferably, the second through hole 3 is coaxial with the mounting plate 1, and the first through holes 2 are symmetrically distributed with the second through hole 3 as a center, so that the diaphragm structure in this embodiment is convenient to quickly assemble into the stack of the flow battery, and the assembly cost of the stack of the flow battery is reduced.
Furthermore, in this embodiment, in order to further reduce the operation difficulty of the bonding seal connection between the hemispherical shell membrane 51 and the through hole two 3/mounting plate 1, as shown in fig. 4 and 5, a mounting ring 4 is fixedly attached to one side of the mounting plate 1 in a sealing manner, and the edge of the curved membrane 5 is attached to the outer wall of the mounting ring 4, and the through hole two 3 is sealed and blocked, so that the open end of the hemispherical shell membrane 51 is sleeved on the mounting ring 4 and is fixedly connected with the mounting ring 4 in a sealing manner, thereby greatly reducing the operation difficulty of the bonding seal connection between the hemispherical shell membrane 51 and the through hole two 3/mounting plate 1, shortening the operation time of the bonding seal connection between the hemispherical shell membrane 51 and the through hole two 3/mounting plate 1, improving the operation speed and efficiency of the bonding seal connection between the hemispherical shell membrane 51 and the through hole two 3/mounting plate 1, reducing the probability of accidents caused in the operation process of the bonding seal connection between the hemispherical shell membrane 51 and the through hole two 3/mounting plate 1, and having good practicability.
Preferably, in this embodiment, as shown in fig. 4 and fig. 5, the mounting ring 4 and the through hole two 3 are coaxial, so that on one hand, the open end of the hemispherical shell diaphragm 51 is conveniently sleeved on the mounting ring 4 and is fixedly connected with the mounting ring 4 in a sealing manner, and on the other hand, the diameter of the mounting ring 4 can be reduced as much as possible, thereby reducing the manufacturing cost of the mounting ring 4.
Further, in this embodiment, as shown in fig. 4 and 5, the outer wall of the mounting ring 4 is a conical surface, and moves away from the mounting plate 1 along the central axis direction of the mounting ring 4, the outer diameter of the mounting ring 4 gradually decreases, that is, the outer diameter of one end of the mounting ring 4, which contacts with the mounting plate 1, is larger than the outer diameter of the other end of the mounting ring 4, so as to protect the curved diaphragm 5, prevent the curved diaphragm 5 from being lifted by the other end of the mounting ring 4 to generate a crease, cause the curved diaphragm 5 to rupture, shorten the service life of the curved diaphragm 5, realize smooth adhesion between the curved diaphragm 5 and the mounting ring 4, and continuously fluctuate by a small extent during the operation of the flow battery, at this time, the curved diaphragm 5 lifted by the other end of the mounting ring 4 to generate a crease can repeatedly lift the curved diaphragm 5 at the crease by the other end of the mounting ring 4, the break appears at the crease over time, which shortens the service life of the curved diaphragm 5 and affects the normal operation of the flow battery, so the outer wall of the mounting ring 4 is designed into a conical surface, and simultaneously the outer diameter of the mounting ring 4 gradually decreases along the central axis direction of the mounting ring 4 towards the direction away from the mounting plate 1, i.e. the outer diameter of one end of the mounting ring 4 contacted with the mounting plate 1 is larger than the outer diameter of the other end of the mounting ring 4, thus the outer wall of the mounting ring 4 is parallel to the inner wall of the curved diaphragm 5 beside the mounting ring 4, after the curved diaphragm 5 clings to the outer wall of the mounting ring 4, the crease is not generated at one end of the mounting ring 4 away from the mounting plate 1, thereby effectively protecting the curved diaphragm 5 and prolonging the service life of the curved diaphragm 5, and the flow battery is ensured to stably and reliably operate for a long time.
Furthermore, in order to facilitate the sealing connection between the curved membrane 5 and the mounting ring 4, and enhance the sealing connection firmness between the curved membrane 5 and the mounting ring 4, as shown in fig. 1, the curved membrane 5 further comprises an annular membrane 52 connected to the open edge of the hemispherical membrane 51, the annular membrane 52 and the hemispherical membrane 51 are coaxial and integrally formed, the annular membrane 52 is tightly sleeved on the outer wall of the mounting ring 4, the hemispherical membrane 51 is not in contact with the outer wall of the mounting ring 4, the inner wall of the annular membrane 52 is similar to the outer wall of the mounting ring 4, is also conical, moves along the central axis direction of the annular membrane 52 towards the direction close to the hemispherical membrane 51, and gradually reduces the inner diameter of the annular membrane 52, namely, the inner diameter of one end, close to the hemispherical membrane 51, of the annular membrane 52 is smaller than the inner diameter of the other end of the annular membrane 52, so designed, the annular membrane 52 is conveniently tightly sleeved on the outer wall of the mounting ring 4, and realizes firm and reliable sealing, compared with the design that the hemispherical membrane 51 is tightly sleeved on the outer wall of the mounting ring 4, the curved membrane 5 is not firmly connected with the curved membrane 1, and the sealing connection firmness between the two sides of the electrolyte is ensured.
In this embodiment, the hemispherical shell membrane 51 means that the portion of the membrane is hemispherical shell, as shown in fig. 1, and the design of the hemispherical shell membrane 51 increases the contact reaction area of the membrane compared with a conventional planar membrane, so as to increase the reaction rate of the flow battery, increase the output power of the flow battery, and improve the quality performance of the flow battery.
In this embodiment, the inner wall of the mounting ring 4 may be designed into a cylindrical surface, or may be designed into a conical surface, preferably designed into a conical surface, so that the arc rod 6 is conveniently attached to the inner wall of the mounting ring 4 and fixedly connected with the mounting ring 4, so as to enhance the mounting firmness of the arc rod 6, when the inner wall of the mounting ring 4 is designed into a conical surface, the inner diameter of one end of the mounting ring 4, which contacts with the mounting plate 1, is greater than the inner diameter of the other end of the mounting ring 4, that is, the inner diameter of the mounting ring moves along the central axis direction of the mounting ring 4 in a direction away from the mounting plate 1, and the outer diameter of the mounting ring 4 gradually decreases.
Further, in this embodiment, as shown in fig. 2, the inner wall of the hemispherical shell diaphragm 51 is provided with an arc rod 6 extending along the warp direction thereof, two ends of the arc rod 6 are fixedly connected with the inner wall of the mounting ring 4, the arc rods 6 are multiple, the arc rods 6 are symmetrically distributed with the central axis of the hemispherical shell diaphragm 51 as the center, the arc rods 6 are mutually matched to form an arc frame, the arc frame is matched with the mounting plate 1 to support the curved diaphragm 5, and compared with the conventional planar diaphragm, the design of the curved diaphragm 5 increases the contact reaction area of the diaphragm, improves the reaction rate of the flow battery, increases the output power of the flow battery, and improves the quality performance of the flow battery.
The diaphragm structure of the flow battery of this embodiment utilizes the arc frame to cooperate with the mounting plate 1 to support the curved diaphragm 5, so the thickness of the curved diaphragm 5 can be designed to be thinner, further, the thickness of the mounting plate 1 and the thickness of the arc rod 6 can be designed to be equal to the thickness of the curved diaphragm 5, so the thickness of the diaphragm structure of the flow battery of this embodiment is designed to be thinner, the volume of the flow battery can not be obviously increased, and the volume energy density of the flow battery is not greatly changed.
In this embodiment, as shown in fig. 2 and fig. 3, the inner wall of the hemispherical shell membrane 51 is in point contact with the arc rod 6, the arc rod 6 is provided with a plurality of bonding points 7 in point contact with the inner wall of the hemispherical shell membrane 51, and the bonding points 7 are equidistantly arranged on the arc rod 6, so that the purpose is to reduce the vibration amplitude of the hemispherical shell membrane 51 in the working process of the flow battery, thereby reducing the working noise of the flow battery, and secondly, the surface area of the inner side surface of the hemispherical shell membrane 51 is designed to be slightly larger than the area of the supporting surface of the outer hemispherical surface of the arc frame, specifically as shown in fig. 2 and fig. 3, the inner side surface of the hemispherical shell membrane 51 is only in point contact with the supporting surface of any one arc rod 6 where the outer hemispherical surface of the arc frame is located at two positions of the bonding points 7B, C, and other positions of the inner side surface of the hemispherical shell membrane 51 are not in contact with the outer hemispherical surface of the arc frame, so that the flow battery can slightly shake or deform, and the hemispherical shell membrane 51 has enough allowance to consume the working noise in the flow battery, so that the annular membrane 51 can not be deformed due to the impact of the annular membrane or the annular membrane 5 is prevented from being deformed due to the impact of the flow battery.
The diaphragm structure of the flow battery of the embodiment can ensure that the curved diaphragm 5 always maintains a larger contact reaction area through the curved diaphragm 5 supported by the arc-shaped frame, so that the performance of the flow battery is fully exerted, and the flow battery is beneficial to long-term high-efficiency operation.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (6)
1. The diaphragm structure of the flow battery is characterized by comprising a mounting plate and a curved diaphragm, wherein a second through hole is formed in the mounting plate, and the edge of the curved diaphragm is attached to one side of the mounting plate and seals the second through hole;
The curved surface diaphragm comprises a hemispherical shell diaphragm, the hemispherical shell diaphragm and the through hole II are coaxial, and the diameter of the open end of the hemispherical shell diaphragm is not smaller than the aperture of the through hole II;
One side of the mounting plate is stuck with a mounting ring, and the edge of the curved diaphragm is stuck on the outer wall of the mounting ring and seals the second through hole;
The outer wall of the mounting ring is a conical surface, and the outer diameter of one end of the mounting ring, which is contacted with the mounting plate, is larger than the outer diameter of the other end of the mounting ring;
Arc rods are arranged on the inner wall of the hemispherical shell diaphragm along the extension of the warp, and two ends of each arc rod are fixedly connected with the inner wall of the mounting ring.
2. The membrane structure of the flow battery according to claim 1, wherein the mounting ring and the second through hole are coaxial;
The curved diaphragm further comprises an annular diaphragm connected to the edge of the opening of the hemispherical shell diaphragm, and the annular diaphragm and the hemispherical shell diaphragm are coaxial and integrally formed;
the annular diaphragm is tightly sleeved on the outer wall of the mounting ring.
3. The membrane structure of the flow battery according to claim 1, wherein the inner wall of the mounting ring is a conical surface, and the inner diameter of one end of the mounting ring, which is in contact with the mounting plate, is larger than the inner diameter of the other end of the mounting ring.
4. The membrane structure of the flow battery according to claim 1, wherein the arc-shaped rods are provided with a plurality of bonding points in point contact with the inner wall of the hemispherical shell membrane, and the bonding points are equidistantly distributed on the arc-shaped rods.
5. The membrane structure of claim 1, wherein the plurality of arc rods are symmetrically distributed about a central axis of the hemispherical separator, and the plurality of arc rods cooperate with each other to form an arc frame.
6. The membrane structure of the flow battery according to claim 1, wherein the second through hole is coaxial with the mounting plate, and a plurality of first through holes which are distributed symmetrically with the second through hole as a center are arranged at the edge of the mounting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420086980.0U CN222320297U (en) | 2024-01-15 | 2024-01-15 | Diaphragm structure of flow battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420086980.0U CN222320297U (en) | 2024-01-15 | 2024-01-15 | Diaphragm structure of flow battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222320297U true CN222320297U (en) | 2025-01-07 |
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ID=94095666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420086980.0U Active CN222320297U (en) | 2024-01-15 | 2024-01-15 | Diaphragm structure of flow battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222320297U (en) |
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2024
- 2024-01-15 CN CN202420086980.0U patent/CN222320297U/en active Active
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