CN218472000U - Flow battery electrolyte storage device - Google Patents

Abstract

The application discloses flow battery electrolyte storage device includes: the box body comprises an accommodating cavity; wherein, keeping away from the holding chamber direction, the box all sets up the insulating layer including insulating layer, structural layer, heat preservation and the protective layer that stacks gradually the setting, especially at the inner chamber of via hole and surface. By the mode, the volume of the storage device can be improved, the strength of the storage device is guaranteed, the electrolyte of the flow battery can be stored conveniently, the electrolyte in the accommodating cavity is guaranteed to be electrically insulated from the outside, and the influence of the external temperature on the performance of the battery pack during the operation of the battery pack is reduced.

Description

Flow battery electrolyte storage device

Technical Field

The application relates to the field of flow batteries, in particular to a flow battery electrolyte storage device.

Background

The flow battery is a high-performance storage battery with anode and cathode electrolytes stored separately and circulated respectively. The positive and negative electrolytes of the flow battery are required to be stored in different storage tanks respectively and are connected with the battery pack through an external pump and a pipeline. The positive and negative electrolytes can generate reversible oxidation-reduction reaction so as to realize the conversion of electric energy and chemical energy, and the energy conversion is high and the starting speed is high.

At present, a general flow battery storage tank is a cylindrical tank body, and the space utilization is low. During the use process of the flow battery storage tank, if the electrolyte is short-circuited with the outside, discharge can be generated, so that the energy storage battery is failed. In addition, the external temperature easily affects the temperature of the electrolyte to affect the performance of the energy storage battery.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome current defect, provide a flow battery electrolyte storage device, can improve electrolyte storage device's volume and intensity, and can reduce the influence of ambient temperature to the group battery performance when the group battery moves.

In order to solve the technical problem, the application adopts a technical scheme that: the box body comprises an accommodating cavity; wherein, keeping away from holding chamber direction, the box is including range upon range of insulating layer, structural layer, heat preservation and the protective layer that sets up in proper order. At least one through hole is formed in at least one face of the box body and communicated with the accommodating cavity.

Further, the inner wall of the via hole and the surface far away from the box body are provided with insulating layers.

Different from the situation of the prior art, the beneficial effects of the application are that: the application provides a flow battery electrolyte storage device, includes: the box body comprises an accommodating cavity; wherein, keeping away from holding chamber direction, the box is including range upon range of insulating layer, structural layer, heat preservation and the protective layer that sets up in proper order. At least one through hole is formed in at least one surface of the box body and communicated with the accommodating cavity. The insulating layer can prevent the electrode liquid in the accommodating cavity from being short-circuited with the outside to cause battery failure, and can reduce the corrosion of the electrolyte to the structural layer so as to improve the corrosion resistance and the service life of the box body; the insulating layer can isolate the influence of the environmental temperature on the temperature of the electrolyte, so that the temperature of the electrolyte is kept within an expected temperature range, and the working efficiency of the energy storage battery is ensured; the protective layer can reduce the influence of external force to heat preservation and structural layer to further improve the life-span and the thermal insulation performance of box. In a word, through the technical scheme, the volume of the storage device can be improved, the strength of the storage device is ensured, the storage of the electrolyte of the flow battery is facilitated, the electrolyte in the accommodating cavity is ensured to be electrically insulated from the outside, and the influence of the external temperature on the performance of the battery pack during the operation of the battery pack can be reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

FIG. 1 is a schematic perspective view of an embodiment of an electrolyte storage device for a flow battery according to the present disclosure;

FIG. 2 is a cross-sectional view of the case of the storage device of FIG. 1;

figure 3 is a schematic structural view of an embodiment of the manhole of figure 1;

fig. 4 is a schematic structural view of another embodiment of the flange hole of fig. 1.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all 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 application.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic perspective view of an embodiment of an electrolyte storage device of a flow battery according to the present application, and fig. 2 is a cross-sectional view of a case of the storage device in fig. 1. This redox flow battery electrolyte storage device can include box 1, and box 1 can be the cuboid of the non-square type shown in figure 1, also can be the square, for cylinder type box, storage device in this application can utilize the space more fully, improves storage device's volume. The box body 1 is of a hollow structure, and the box body 1 comprises an accommodating cavity (not shown) for accommodating the positive electrolyte or the negative electrolyte of the flow battery; in the direction away from the accommodating cavity, the box body may include an insulating layer 101, a structural layer 102, an insulating layer 103, and a protective layer 104, which are stacked in sequence. On the one hand, the insulating layer 101 can prevent the electrolyte in the accommodating cavity from being short-circuited with the outside through the box body 1, and on the other hand, the electrolyte in the accommodating cavity can be prevented from being corroded and damaged by the box body 1 when the electrolyte is stored for a long time, so that the service life of the box body 1 is prolonged. In some embodiments, the insulating layer 101 may be a separate layer of corrosion resistant insulating material, such as a polyethylene layer or an insulating rubber layer; in another embodiment, the insulating layer 101 may also be an anti-corrosion coating applied to a surface of the structural layer 102 near the receiving cavity. The structural layer 102 may be a composite steel plate layer, a solid structure, or a hollow structure, determines the shape of the box body 1, and enhances the bending strength of the box body 1. Insulating layer 103 is used for avoiding the electrolyte in holding chamber to receive external environment's influence excessively, when box 1 is connected to the group battery function, can make the electrolyte temperature of holding intracavity remain stable, ensures the steady operation of redox flow group battery. In some embodiments, a non-through groove is formed in a side of the structural layer 102 away from the insulating layer 101, and the insulating layer 103 may be partially or completely filled in the groove, so that the hollow structure of the structural layer 102 is fully utilized, and the thickness of the box body 1 is reduced. The protective layer 104 is disposed on the outermost layer of the box body 1 to protect the insulation layer 103 and provide a certain bending strength to the box body 1. In some embodiments, the protective layer 104 may be a groove-shaped outer mask with a wave-shaped or zigzag-shaped cross section, and the groove-shaped structure may enhance the strength of the box 1, so that the box 1 is not easily deformed when being pressed in a direction parallel to the groove.

The structure can improve the volume and the strength of the electrolyte storage device, avoid short circuit between electrolyte in the accommodating cavity and the outside, and reduce the influence of the external temperature on the performance of the battery pack when the battery pack operates.

In an application scenario, please refer to fig. 1, at least one surface of the box body 1 may be provided with at least one via hole 11, and the via hole 11 is communicated with the accommodating cavity. Wherein, this box 1 can also include: at least one blocking piece 113 is detachably arranged at the position of the through hole 11, in some embodiments, the through hole 11 protrudes out of the surface of the box body 1, and the blocking piece 113 may be a cover body arranged at a side of the through hole 11 far away from the accommodating cavity. In one embodiment, a portion of the through hole 11 protruding from the surface of the box body 1 may be provided with a first thread, and the inner side of the cover body may be provided with a second thread corresponding to the first thread; in another embodiment, the cover body can be directly buckled on the part of the through hole 11 protruding out of the surface of the box body 1; in another embodiment, the cover may be hinged to the portion of the through hole 11 protruding from the surface of the case 1. In some other embodiments, the through hole 11 is recessed in the surface of the tank 1 or flush with the surface of the tank 1, and the blocking member 113 may be a detachable partition plate disposed on the side of the through hole 11 close to the receiving cavity. The through hole 11 can be used as an inlet and an outlet of the electrolyte, so that the input and the output of the electrolyte are facilitated.

In some embodiments, as shown in fig. 1, a plurality of through holes 11 may be provided on the tank body 1, and the plurality of through holes 11 may include a manhole 111 and a flange hole 112, wherein the manhole 111 refers to an open hole structure for personnel to access equipment for installation, maintenance and safety inspection, and correspondingly, the plugging member 113 may be a manhole cover. The manhole 111 and the flange hole 112 may have different purposes. In one embodiment, the manhole 111 and the flange hole 112 may be provided on the same wall. In another embodiment, the manhole 111 and the flange hole 112 may be respectively disposed on different box walls, and are selected according to the requirements of the actual application. In some embodiments, a plurality of flange holes 112 may be disposed on the same box wall, or may be disposed on different box walls, for example, part of the flange holes 112 and the manhole 111 may be disposed on the upper wall, and the other part of the flange holes 112 may be disposed on the side wall, which may be adjusted according to the actual application scenario. The aforementioned blocking member 113 may be a flange cover (not shown) corresponding to the flange hole 112, and the flange hole 112 may be used to install a pipe connected to a pump and a battery pack. In some embodiments, at least a portion of the inner wall of the via 11 is provided with an insulating layer. The electrolyte in the accommodating cavity can be further ensured not to be short-circuited with the outside through the through hole 11.

In some embodiments, the inner wall of manhole 111 may be provided with an insulating layer 1122. Referring to fig. 3-4, fig. 3 is a schematic structural view of an embodiment of the manhole in fig. 1, and fig. 4 is a schematic structural view of another embodiment of the flange hole in fig. 1.

In an embodiment, referring to fig. 3, a protrusion 1112 is formed on a surface of the box body 1, the protrusion 1112 is provided with a manhole 111 communicating with the accommodating chamber, the manhole 111 may have a blocking piece 113, the blocking piece 113 may be a manhole cover matching with the manhole 111, an inner wall of the protrusion 1112 and a surface of a side far from the box body 1 may be provided with an insulating layer 1122, the blocking piece 113 may be made of an insulating material, the inner wall of the blocking piece 113 near the box body 1 may also have the insulating layer 1122, so that an electrolyte in the accommodating chamber may be prevented from being short-circuited with the outside through the manhole. In an embodiment, referring to fig. 4 (fig. 4 only shows a portion of the tank 1 adjacent to the flange member 114), the flange member 114 includes a first extending portion 1141 and a second extending portion 1142 forming an included angle therebetween, the first extending portion 1141 is fixedly connected to the surface of the tank 1 adjacent to the flange hole 112, the included angle may be a right angle, or other angles, and is determined by the specific structure of the flange member 114; the through hole 115 penetrates the first extending portion 1141 and the second extending portion 1142, and an insulating layer 1122 is disposed on a side of the second extending portion 1142 away from the case 1. It is possible to further prevent the electrolyte from being short-circuited to the outside through the flange member 114.

In some embodiments, as shown in fig. 1, the box body 1 may be a cuboid of a non-cubic type, and the box body 1 may include four sidewalls 122 connected to each other and an upper wall 121 and a bottom wall (not labeled) connected to the four sidewalls 122, wherein the bottom wall is opposite to the upper wall 121. In addition, only two of the four sidewalls 122 are illustrated in fig. 1, the other two sidewalls being respectively opposite to the two sidewalls 122 illustrated in fig. 1; all the vias 11 may be disposed on the upper wall 121, or may be partially disposed on the upper wall and partially disposed on the sidewalls.

In some embodiments, as shown in fig. 1, the case body 1 may further include a plurality of first connectors 131 located on an outer surface of the case body 1, the first connectors 131 may be quadrangular, triangular prism, or cylindrical, and the first connectors 131 may be hollow in the middle for saving material. The first connecting members 131 are disposed across the boundary between the two sidewalls 122, and two adjacent sidewalls 122 are connected by one first connecting member 131, in an embodiment, the sidewalls 122 may be welded to the first connecting members 131. Thus, the forming process of the box body 1 can be simplified, when part of the box body has problems, the box body is easy to replace, the service life of the box body 1 is prolonged, and the bonding strength between the side walls 122 can be improved.

In one embodiment, as shown in FIG. 1. The case further includes a plurality of second connectors 132 and a plurality of third connectors 133. Wherein the second connecting member 132 is connected to a surface of an end portion of the first connecting member 131 in the first direction D1 in which the bottom wall is directed to the upper wall 121; the plurality of third connecting members 133 are connected to the second connecting members 132, are positioned on the upper wall 121 or the bottom wall, and are connected to the corresponding upper wall 121 or the bottom wall. The third connecting member 133 can provide strength support to each tank, increasing the bending strength of the tank. The second connector 132 may protect the case. In one embodiment, the second connecting member 132 may be further provided with an opening to facilitate lifting, carrying, fixing and stacking of the cases.

In an embodiment, the first connection member 131 may be directly connected with the third connection member 133. In another embodiment, the first connector 131 may be integrally formed with the third connector 133.

Of course, in other embodiments, the case 1 may be integrally formed, thereby simplifying the manufacturing process.

From the above, the utility model provides a flow battery electrolyte storage device, include: the box body comprises an accommodating cavity; wherein, keeping away from the holding chamber direction, the box all sets up the insulating layer including insulating layer, structural layer, heat preservation and the protective layer that stacks gradually the setting, especially at the inner chamber of via hole and surface. Through above-mentioned technical scheme, can improve storage device's volume, guarantee storage device's intensity, the storage of the redox flow battery electrolyte of being convenient for guarantees that the electrolyte in the holding chamber is insulated with outside electricity, and can reduce the influence of ambient temperature to the group battery performance during the group battery operation.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.

Claims (7)

1. A flow battery electrolyte storage device, comprising:

the box body comprises an accommodating cavity; the box body comprises an insulating layer, a structural layer, a heat insulation layer and a protective layer which are sequentially stacked in the direction away from the accommodating cavity;

at least one through hole is formed in at least one surface of the box body and communicated with the accommodating cavity.

2. The memory device of claim 1, wherein at least a portion of an inner wall of the via is provided with an insulating layer.

3. The storage device of claim 2, wherein the via comprises a manhole and a flange hole; the inner wall of the manhole is provided with the insulating layer; the flange hole position department be provided with the flange spare of flange hole laminating, just the flange spare be provided with the through-hole of holding chamber intercommunication, the inner wall of through-hole is provided with the insulating layer.

4. The storage device as claimed in claim 3, wherein the surface of the box body is formed with a protrusion provided with the manhole communicating with the accommodation chamber, and the inner wall of the protrusion and the surface of the side far from the box body are provided with the insulating layer; the flange piece comprises a first extending part and a second extending part which form an included angle with each other, and the first extending part is fixedly connected with the surface of the box body adjacent to the flange hole; the through hole penetrates through the first extending part and the second extending part, and an insulating layer is arranged on one side, away from the box body, of the second extending part.

5. The storage device of claim 1,

the box is the cuboid, the box contain four lateral walls of interconnect and with four lateral wall interconnect's upper wall and diapire.

6. The storage device of claim 5, further comprising:

the first connecting pieces are arranged on the outer surface of the box body in a bridging mode and are arranged at the junction of two adjacent side walls, and the two adjacent side walls are connected through one first connecting piece.

7. The storage device of claim 6, further comprising:

a plurality of second connecting members connected to a surface of an end of the first connecting member in the first direction in which the bottom wall is directed to the upper wall;

and the third connecting pieces are connected with the second connecting pieces, positioned on the upper wall or the bottom wall and connected with the corresponding upper wall or the bottom wall.

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