Flow battery system

Abstract

The application relates to a liquid flow battery system, which comprises an electrical module, a capacity module, a power module, a connecting pipeline, a reinforcing structure and a box body. The electrical module comprises a battery management system and an energy storage converter. The capacity module comprises a first storage tank and a second storage tank. The power module comprises an electric pile group. The connecting pipeline is used for connecting the first storage tank with the electric pile group and connecting the second storage tank with the electric pile group. The reinforcing structure is used for reinforcing the mechanical strength of the capacity module. The electrical module, the capacity module, the power module, the connecting pipeline and the reinforcing structure are arranged in the same box body. By arranging the reinforcing structure, the deformation of the first storage tank and the second storage tank is prevented or reduced. By arranging the electrical module, the capacity module, the power module, the connecting pipeline and the reinforcing structure in the same box body, the workload and the debugging time on site are reduced, and the utilization rate per unit area on site is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically to a flow battery system. Background Technology

[0002] A vanadium redox flow battery consists of a positive electrode tank, a negative electrode tank, a fuel cell stack, connecting pipelines, and electrical equipment. Currently, vanadium redox flow batteries are typically divided into three modules: a power module, a capacity module, and an electrical module. The capacity module mainly includes the positive electrode tank, the negative electrode tank, the positive electrode pump, and the negative electrode pump. The power module mainly includes the fuel cell stack and connecting pipelines. The electrical module mainly includes the battery management system (BMS) and the power conversion system (PCS).

[0003] The current technical solution has the following main problems: 1) The functional modules are scattered in multiple containers, resulting in a large amount of construction work, extended construction period, long system debugging time, and high overall cost; 2) The positive and negative electrode tanks are mostly made of plastic, which has insufficient mechanical strength and is easily deformed under the influence of electrolyte, thus causing problems such as electrolyte leakage and reducing the safety and availability of the battery system. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a flow battery system. The flow battery system includes: an electrical module comprising a battery management system and an energy storage converter; a capacity module comprising a first storage tank and a second storage tank; a power module comprising a fuel cell stack; connecting pipelines for connecting the first storage tank and the fuel cell stack, and connecting the second storage tank and the fuel cell stack; a reinforcing structure for strengthening the mechanical strength of the capacity module; and a housing, wherein the electrical module, the capacity module, the power module, the connecting pipelines, and the reinforcing structure are all housed within the same housing.

[0005] In one embodiment of this application, the reinforcing structure includes: a first reinforcing structure, vertically disposed between the first storage tank and the second storage tank, the first reinforcing structure having a first side and a second side disposed opposite to each other, the first side abutting against the first storage tank, and the second side abutting against the second storage tank.

[0006] In one embodiment of this application, the reinforcing structure includes: a second reinforcing structure, vertically disposed between the first storage tank and the fuel cell stack, the second reinforcing structure having a third side and a fourth side disposed opposite to each other, the third side abutting against the first storage tank.

[0007] In one embodiment of this application, the housing has a first inner sidewall, a second inner sidewall, a third inner sidewall, and a fourth inner sidewall connected sequentially. The first inner sidewall and the third inner sidewall are disposed opposite to each other, as are the second inner sidewall and the fourth inner sidewall. The reinforcing structure includes a first reinforcing support structure and / or a second reinforcing support structure. The first reinforcing support structure is vertically disposed between the first storage tank and the fuel cell stack. The first reinforcing support structure has a first end and a second end disposed opposite to each other. The first end is fixedly connected to the first inner sidewall, and the second end is fixedly connected to the third inner sidewall. The first reinforcing support structure abuts against the first storage tank. The second reinforcing support structure is vertically disposed between the second storage tank and the second inner sidewall. The second reinforcing support structure has a third end and a fourth end disposed opposite to each other. The third end is fixedly connected to the first inner sidewall, and the fourth end is fixedly connected to the third inner sidewall. The second reinforcing support structure abuts against the second storage tank.

[0008] In one embodiment of this application, the system further includes: an isolation structure, vertically disposed between the power module and the electrical module to isolate the power module and the electrical module, wherein the bottom of the isolation structure abuts against the bottom of the housing.

[0009] In one embodiment of this application, both the first and second storage tanks are L-shaped tanks. The first storage tank has a first sidewall and a second sidewall disposed opposite to each other. The first sidewall includes a first vertical surface, and the second sidewall includes a second vertical surface, a first horizontal surface, and a third vertical surface connected sequentially from top to bottom. The second storage tank has a third sidewall and a fourth sidewall disposed opposite to each other. The third sidewall includes a fourth vertical surface, and the fourth sidewall includes a fifth vertical surface, a second horizontal surface, and a sixth vertical surface connected sequentially from top to bottom. The first sidewall and the third sidewall are adjacent to each other. The tank body has a first inner sidewall, a second inner sidewall, a third inner sidewall, and a fourth inner sidewall connected sequentially. The first inner sidewall and the third inner sidewall are disposed opposite to each other, and the second inner sidewall and the fourth inner sidewall are disposed opposite to each other. The reinforcing structure includes a first reinforcing structure and a second reinforcing structure. The first reinforcing structure is vertically disposed between the first sidewall and the third sidewall, and the first reinforcing structure has a first side surface and a second side surface disposed opposite to each other. The first side abuts against the first vertical surface, and the second side abuts against the fourth vertical surface. The height of the first reinforcing structure is greater than or equal to the height of the first vertical surface, and the height of the first reinforcing structure is greater than or equal to the height of the fourth vertical surface. The second reinforcing structure is vertically disposed between the first storage tank and the fuel cell stack. The second reinforcing structure has a third side and a fourth side disposed opposite to each other. The third side abuts against the third vertical surface, and the height of the second reinforcing structure is greater than or equal to the height of the third vertical surface. The reinforcing structure further includes: a first reinforcing support structure and / or a second reinforcing support structure, wherein the first reinforcing support structure is vertically disposed between the first storage tank and the fuel cell stack, and the first reinforcing support structure abuts against the second vertical surface; the second reinforcing support structure is vertically disposed between the second storage tank and the second inner sidewall of the tank body, and the second reinforcing support structure abuts against the fifth vertical surface, and the sixth vertical surface abuts against the second inner sidewall of the tank body.

[0010] In one embodiment of this application, both the first reinforcing structure and the second reinforcing structure include steel partitions, the surface of which is coated with an anti-corrosion coating.

[0011] In one embodiment of this application, the system further includes a temperature control unit, comprising: a pipeline cooling device connected to the connecting pipeline to form a cooling circuit; a heat dissipation duct including a fifth end and a sixth end, the fifth end being connected to the energy storage converter and the sixth end being disposed on the outer wall of the housing; and a housing temperature control device disposed on the outer side of the housing and close to the battery management system.

[0012] In one embodiment of this application, the system further includes: a control unit connected to the electrical module; and an interactive interface, including a touch screen disposed on the outer wall of the housing, the touch screen being signal-connected to the control system.

[0013] In one embodiment of this application, the enclosure includes a door, which is disposed on the outer side wall of the enclosure, and the battery pack and the door are positioned correspondingly.

[0014] This application enhances the mechanical strength of the capacity module by incorporating a reinforcing structure, preventing or reducing deformation of the first and second storage tanks, thus ensuring the safety of the flow battery system. By integrating the electrical module, capacity module, power module, connecting pipelines, and reinforcing structure into the same enclosure, the entire flow battery system is integrated into a single enclosure, significantly improving the system's area utilization and convenience, reducing on-site workload and commissioning time, increasing the utilization rate of the area, enhancing the commercialization level of the flow battery system, and lowering its cost. Attached Figure Description

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings, wherein:

[0016] Figure 1 This is a top view of a flow battery system according to an embodiment of this application;

[0017] Figure 2 yes Figure 1 Right view of the flow battery system of the illustrated embodiment;

[0018] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the flow battery system of the embodiment shown;

[0019] Figure 4 yes Figure 1 Another perspective view of the flow battery system of the embodiment shown;

[0020] Figure 5 A three-dimensional structural schematic diagram of an L-shaped storage tank according to an embodiment of this application is shown;

[0021] Figure 6 It shows Figure 1 A front view of the flow battery system of the illustrated embodiment;

[0022] Figure 7 It shows Figure 1 Rear view of the flow battery system of the illustrated embodiment. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein, and therefore this application is not limited to the specific embodiments disclosed below.

[0025] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not specifically singular and may include plural forms. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0026] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are generally based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the system or component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0027] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In addition, although the terminology used in this application is selected from commonly known and used terms, some terms mentioned in this application's specification may have been chosen by the applicant according to his or her judgment, and their detailed meanings are explained in the relevant sections of this description. Moreover, this application should be understood not only through the actual terms used, but also through the meaning implied by each term.

[0028] The embodiments of this application are described below based on the accompanying drawings. However, the embodiments shown below are examples of flow battery systems used to embody the technical concept of this application, and the flow battery system of this application is not specifically defined as follows. Furthermore, in order to facilitate understanding of the scope of the claims, the components corresponding to the components shown in the "Claims" and "Content of Application" columns are assigned numbers to the components shown in the embodiments. However, the components shown in the claims are not intended to be specific to the components of the embodiments. In particular, the dimensions, materials, shapes, and relative arrangements of the constituent components described in the embodiments are not intended to limit the scope of this application unless specifically stated, but are merely illustrative examples.

[0029] However, the dimensions or positional relationships of the components shown in the accompanying drawings are sometimes exaggerated for clarity. Therefore, in the following description, detailed descriptions of the same names and symbols representing the same or homogeneous components are appropriately omitted. Furthermore, the elements constituting this application may be multiple elements composed of the same components, thus allowing one component to function as multiple elements; conversely, multiple components may share the function of one component. Additionally, the content described in some embodiments and implementations can be applied to other embodiments and implementations. Furthermore, in this specification, "upper" is not limited to the case of being formed in contact with an upper surface, but also includes the case of being formed separately on top, and also includes the meaning of an intermediate layer between layers.

[0030] To address the aforementioned technical issues, the design scheme for the flow battery system proposed in this application is applicable to flow battery systems using a container design, such as vanadium redox flow batteries and iron-chromium flow batteries. It is particularly suitable for small-scale commercial vanadium redox flow battery systems, such as vanadium redox flow battery systems with an output power of 100kW-200kW.

[0031] Figure 1 A top view of a flow battery system according to an embodiment of this application is shown. Figure 2 It shows Figure 1 Right view of the flow battery system of the illustrated embodiment.

[0032] like Figure 1 and Figure 2As shown, the flow battery system 100 of this application includes: an electrical module 110, including a battery management system 111 and an energy storage converter 112; a capacity module 120, including a first storage tank 121 and a second storage tank 122; a power module 130, including a fuel cell stack 131; a connecting pipeline 140 for connecting the first storage tank 121 and the fuel cell stack 131, and for connecting the second storage tank 122 and the fuel cell stack 131; a reinforcing structure for strengthening the mechanical strength of the capacity module 120; and a housing 160, in which the electrical module 110, the capacity module 120, the power module 130, the connecting pipeline 140 and the reinforcing structure are all disposed within the same housing 160.

[0033] This application enhances the mechanical strength of the capacity module 120 by incorporating a reinforcing structure, preventing or reducing deformation of the first storage tank 121 and the second storage tank 122, thereby improving the safety of the system 100. By integrating the electrical module 110, capacity module 120, power module 130, connecting pipes 140, and reinforcing structure all within the same enclosure 160—that is, by integrating the system 100 into a single enclosure 160—this application significantly improves the utilization rate and convenience of the system 100 per unit area, reduces on-site workload and commissioning time, increases the utilization rate of the on-site area, enhances the commercialization level of the flow battery system, and lowers the overall cost of the system 100.

[0034] like Figure 1 As shown, in some embodiments, along the first direction F1, within the housing 160, an electrical module 110, a power module 130, and a capacity module 120 are sequentially arranged. In some embodiments, the positions of the electrical module 110, power module 130, and capacity module 120 can be set according to actual needs. In some embodiments, the housing 160 includes a container. In some embodiments, the housing 160 includes steel coated with an anti-corrosion coating.

[0035] like Figure 2 As shown, in some embodiments, the battery management system 111 and the energy storage converter 112 are arranged adjacently in the housing 160. In the prior art, most vanadium redox flow systems are designed for outdoor use, requiring the housings of both the battery management system 111 and the energy storage converter 112 to be designed with a high level of corrosion resistance for outdoor environments. By integrating the battery management system 111 and the energy storage converter 112 into the housing 160, the housing 160 can provide a certain degree of isolation and protection for the battery management system 111 and the energy storage converter 112, thereby allowing for a reduction in the corrosion resistance level of the housings of the battery management system 111 and the energy storage converter 112. This, in turn, can reduce the cost of the electrical module 110 and improve the overall economic efficiency of the flow battery system 100.

[0036] In some embodiments, power is transmitted between the battery management system 111 and the energy storage inverter 112 via a cable, allowing the energy storage inverter 112 to directly power the battery management system 111. In the prior art, the battery management system 111 and the energy storage inverter 112 are powered separately by external power supply devices located outside the enclosure 160. Compared to the prior art, the method of the energy storage inverter 112 directly powering the battery management system 111 reduces the total number of outgoing cables in the system 100, allowing the entire flow battery system 100 to have a single outgoing cable, thereby reducing difficulties in on-site wiring and routing.

[0037] like Figure 1 As shown, in some embodiments, a first storage tank 121 and a second storage tank 122 are arranged sequentially from right to left along the first direction F1. In some embodiments, the first storage tank 121 is a positive electrode storage tank, and the second storage tank 122 is a negative electrode storage tank. In other embodiments, the first storage tank 121 may be a negative electrode storage tank, and the second storage tank 122 may be a positive electrode storage tank.

[0038] Figure 3 yes Figure 1 The diagram shows a perspective view of the flow battery system of the embodiment shown, where the top cover of the housing 160 is not shown, and is used to show the modules inside the housing 160. Figure 4 yes Figure 1 Another perspective view of the flow battery system of the embodiment shown is mainly used to show the reinforcing structure inside the housing 160.

[0039] like Figure 3 and Figure 4 As shown, in some embodiments, the reinforcing structure includes: a first reinforcing structure 151, which is vertically disposed between the first storage tank 121 and the second storage tank 122. The first reinforcing structure 151 has a first side 1511 and a second side 1512 disposed opposite to each other. The first side 1511 abuts against the first storage tank 121, and the second side 1512 abuts against the second storage tank 122.

[0040] It should be understood that when the capacity module 120 is in close contact with the reinforcing structure, the mechanical strength of a portion of the capacity module 120 (the part in contact with the reinforcing structure) can be effectively improved. In the above embodiment, by providing a vertical first reinforcing structure 151 between the first tank 121 and the second tank 122, the first side 1511 is in close contact with the first tank 121, and the second side 1512 is in close contact with the second tank 122. This improves the mechanical strength of the portion of the first tank 121 near the first side 1511 and the portion of the second tank 122 near the second side 1512, thereby preventing deformation of the portions of the first tank 121 near the first side 1511 and the second tank 122 near the second side 1512.

[0041] like Figure 3 and Figure 4 As shown, in some embodiments, the reinforcing structure includes a second reinforcing structure 152, vertically disposed between the first storage tank 121 and the fuel cell stack 131. The second reinforcing structure 152 has a third side 1521 and a fourth side 1522 disposed opposite to each other, with the third side 1521 abutting against the first storage tank 121. By providing a vertical second reinforcing structure 152 between the first storage tank 121 and the fuel cell stack 131, the third side 1521 is tightly abutted against the first storage tank 121, improving the local mechanical strength of the first storage tank 121 near the third side 1521, thereby preventing local deformation of the first storage tank 121 near the third side 1521.

[0042] In some embodiments, both the first reinforcing structure 151 and the second reinforcing structure 152 include steel partitions, the surfaces of which are coated with an anti-corrosion coating. On one hand, since the steel partition is a flat plate, its shape allows for a large contact area with the capacity module 120, and the steel partition itself has high mechanical strength, effectively enhancing the mechanical strength of the capacity module 120. On the other hand, coating the surface of the steel partition with an anti-corrosion coating improves its corrosion resistance, effectively preventing metal oxidation caused by electrolyte erosion. In some embodiments, to meet the mechanical strength requirements of the first reinforcing structure 151 and the second reinforcing structure 152, other materials can be used to replace the steel partition; this application does not impose specific limitations on this.

[0043] like Figure 3 and Figure 4As shown, in some embodiments, the housing 160 has a first inner sidewall 161, a second inner sidewall 162, a third inner sidewall (not shown), and a fourth inner sidewall 164 connected in sequence, wherein the first inner sidewall 161 and the third inner sidewall are arranged opposite to each other, and the second inner sidewall 162 and the fourth inner sidewall 164 are arranged opposite to each other. The reinforcing structure includes a first reinforcing support structure 153 and / or a second reinforcing support structure (not shown), wherein the first reinforcing support structure 153 is vertically arranged between the first storage tank 121 and the fuel cell stack 131, and has a first end 1531 and a second end 1532 arranged opposite to each other. The first end 1531 is fixedly connected to the first inner sidewall 161, and the second end 1532 is fixedly connected to the third inner sidewall. The first reinforcing support structure 153 also has a first side 153... 3. The second side 1534 and the first side 1533 abut against the first storage tank 121; the second reinforcing support structure is vertically arranged between the second storage tank 122 and the second inner side wall 162. The second reinforcing support structure has a third end (not shown) and a fourth end (not shown) arranged opposite to each other. The third end is fixedly connected to the first inner side wall 161, and the fourth end is fixedly connected to the third inner side wall. The second reinforcing support structure has a third side (not shown) and a fourth side (not shown) arranged opposite to each other. The third side abuts against the second storage tank 122.

[0044] By providing a first reinforcing support structure 153 between the first storage tank 121 and the fuel cell stack 131, with both ends of the first reinforcing support structure 153 fixedly connected to the first inner sidewall 161 and the third inner sidewall respectively, and the first side 1533 tightly abutting against the first storage tank 121, the mechanical strength of the local area where the first storage tank 121 and the first reinforcing support structure 153 are in contact can be improved, effectively preventing deformation of the local area where the first storage tank 121 and the first reinforcing support structure 153 are in contact. Similarly, by providing a second reinforcing support structure, with the third side tightly abutting against the second storage tank 122, the mechanical strength of the local area where the second storage tank 122 and the second reinforcing support structure are in contact can be improved, effectively preventing deformation of the local area where the second storage tank 122 and the second reinforcing support structure are in contact.

[0045] like Figure 3As shown, in some embodiments, the first reinforcing support structure 153 and / or the second reinforcing support structure includes reinforcing ribs 151a. By setting the first reinforcing support structure 153 and / or the second reinforcing support structure as reinforcing ribs 151a, both the local mechanical strength of the contact area between the capacity module 120 and the first and second reinforcing support structures can be guaranteed, and the ease of connection between the first and second reinforcing support structures and the housing 160 can be improved. In some embodiments, provided that the mechanical strength and connection requirements of the first and second reinforcing support structures are met, other materials can be used to replace the reinforcing ribs 151a, and this application does not impose specific limitations on this.

[0046] like Figure 3 As shown, in some embodiments, two reinforcing ribs 151a are respectively connected to the first inner sidewall 161 to fix the first reinforcing support structure 153. Figure 3 As shown, the number of reinforcing ribs 151a can be multiple. For example, the first reinforcing support structure 153 can be a mesh frame structure composed of multiple horizontal and vertical reinforcing ribs 151a. The first side 1533 of the first reinforcing support structure 153 is specifically the side of the mesh frame near the first storage tank 121. It can be understood that this side is not a solid plane, but a mesh plane with a perforated structure. In some embodiments, the specific structures of the first reinforcing support structure 153 and the second reinforcing support structure can be set according to requirements.

[0047] In some embodiments, in order to improve the local mechanical strength of the first storage tank 121 and the second storage tank 122 according to actual engineering needs, any one of the first reinforcing structure 151, the second reinforcing structure 152, the first reinforcing support structure 153 and the second reinforcing support structure can be selectively provided in the housing 160.

[0048] Figure 5 A three-dimensional structural schematic diagram of an L-shaped storage tank according to an embodiment of this application is shown. Figures 2-5As shown, in some embodiments, both the first storage tank 121 and the second storage tank 122 are L-shaped tanks. The first storage tank 121 has a first sidewall 1211 and a second sidewall 1212 disposed opposite to each other. The first sidewall includes a first vertical surface 1211a, and the second sidewall 1212 includes a second vertical surface 1212a, a first horizontal surface 1212b, and a third vertical surface 1212c connected sequentially from top to bottom. The second storage tank 122 has a third sidewall 1221 and a fourth sidewall 1222 disposed opposite to each other. The third sidewall 1221 includes a fourth vertical surface 1221a, and the fourth sidewall 1222 includes a fifth vertical surface 1222a and a second horizontal surface connected sequentially from top to bottom. 1222b and sixth vertical surface 1222c; wherein, the first sidewall 1211 and the third sidewall 1221 are arranged adjacent to each other; the box body 160 has a first inner sidewall 161, a second inner sidewall 162, a third inner sidewall and a fourth inner sidewall 164 connected in sequence, wherein the first inner sidewall 161 and the third inner sidewall are arranged opposite to each other, and the second inner sidewall 162 and the fourth inner sidewall 164 are arranged opposite to each other; the reinforcing structure includes a first reinforcing structure 151 and a second reinforcing structure 152, wherein the first reinforcing structure 151 is vertically arranged between the first sidewall 1211 and the third sidewall 1221, and the first reinforcing structure 151 has a first sidewall 1511 and a second sidewall 152 arranged opposite to each other. 12. The first side surface 1511 abuts against the first vertical surface 1211a, and the second side surface 1512 abuts against the fourth vertical surface 1221a. The height of the first reinforcing structure 151 is greater than or equal to the height of the first vertical surface 1211a, and the height of the first reinforcing structure 151 is greater than or equal to the height of the fourth vertical surface 1221a. The second reinforcing structure 152 is vertically disposed between the first storage tank 121 and the fuel cell stack 131. The second reinforcing structure 152 has a third side surface 1521 and a fourth side surface 1522 disposed opposite to each other. The third side surface 1521 abuts against the third vertical surface 1212c, and the height of the second reinforcing structure 152 is greater than or equal to the height of the third vertical surface 1212c. The height; the reinforcing structure also includes: a first reinforcing support structure 153 and / or a second reinforcing support structure, wherein the first reinforcing support structure 153 is vertically disposed between the first storage tank 121 and the fuel cell stack 131, the first reinforcing support structure 153 has a first side 1533 and a second side 1534 disposed opposite to each other, the first side 1533 abutting against the second vertical surface 1212a; the second reinforcing support structure is disposed between the second storage tank 122 and the third inner wall of the tank body 160, the second reinforcing support structure has a third side and a fourth side disposed opposite to each other, the third side abutting against the fifth vertical surface 1222a, and the sixth vertical surface 1222c abutting against the third inner wall of the tank body 160.

[0049] It should be understood that since the reinforcing structure enhances the mechanical strength of the local area where the capacity module 120 and the reinforcing structure are in contact, by setting the height of the first reinforcing structure 151 to be greater than or equal to the height of the first vertical surface 1211a, the first vertical surface 1211a can be completely in contact with the first reinforcing structure 151 in the height direction, effectively improving the mechanical strength of the first vertical surface 1211a. Similarly, by setting the height of the first reinforcing structure 151 to be greater than or equal to the height of the fourth vertical surface 1221a, and the height of the second reinforcing structure 152 to be greater than or equal to the height of the third vertical surface 1212c, the mechanical strength of the third vertical surface 1212c and the fourth vertical surface 1221a can be effectively improved.

[0050] In the above embodiments, based on the structure of the L-shaped storage tank of the first storage tank 121 and the second storage tank 122, by setting the first side 1511 to abut against the first vertical surface 1211a, the third side 1521 to abut against the third vertical surface 1212c, and making the height of the first reinforcing structure 151 greater than or equal to the height of the first vertical surface 1211a, the height of the second reinforcing structure 152 greater than or equal to the height of the third vertical surface 1212c, and the first reinforcing support structure 153 to abut against the second vertical surface 1212a, the mechanical strength of the first vertical surface 1211a, the second vertical surface 1212a and the third vertical surface 1212c of the first storage tank 121 can be sufficiently improved, thereby effectively preventing the deformation of the first side wall 1211 and the second side wall 1212. By setting the second side surface 1512 to abut against the fourth vertical surface 1221a, and ensuring that the height of the first reinforcing structure 151 is greater than or equal to the height of the fourth vertical surface 1221a, the second reinforcing support structure to abut against the fifth vertical surface 1222a, and the third inner side wall of the tank 160 to abut against the sixth vertical surface 1222c, the mechanical strength of the fourth vertical surface 1221a, fifth vertical surface 1222a, and sixth vertical surface 1222c of the second storage tank 122 can be significantly improved, thereby ensuring the shape of the third side wall 1221 and the fourth side wall 1222 of the second storage tank 122. Therefore, through the above design, each vertical surface of the L-shaped storage tank is specifically reinforced, effectively suppressing the deformation risk of the first side wall 1211 and second side wall 1212 of the first storage tank 121, and the third side wall 1221 and fourth side wall 1222 of the second storage tank 122 under electrolyte load.

[0051] like Figures 3-5As shown, in some embodiments, the first storage tank 121 further has a fifth side wall 1213 and a sixth side wall 1214 disposed opposite to each other. The fifth side wall 1213 abuts against the first inner side wall 161 of the tank body 160, and the sixth side wall 1214 abuts against the third inner side wall of the tank body 160, thereby enhancing the mechanical strength of the fifth side wall 1213 and the sixth side wall 1214 of the first storage tank 121. Similarly, the second storage tank 122 also has a seventh side wall 1223 and an eighth side wall 1224 disposed opposite to each other. The seventh side wall 1223 abuts against the first inner side wall 161 of the tank body 160, and the eighth side wall 1224 abuts against the third inner side wall of the tank body 160, thereby enhancing the mechanical strength of the seventh side wall 1223 and the eighth side wall 1224 of the second storage tank 122.

[0052] In some embodiments, the bottom 1215 of the first storage tank 121 (see...) Figure 5 The bottom 1225 of the first storage tank 121 and the second storage tank 122 respectively abut against the bottom 165 of the housing 160 to enhance the mechanical strength of the bottom 1215 of the first storage tank 121 and the bottom 1225 of the second storage tank 122. In some embodiments, whether the bottom of the first reinforcing structure 151 and the bottom of the second reinforcing structure 152 abut against the bottom 165 of the housing 160 can be determined based on whether the capacity module 120 abuts against the bottom 165 of the housing 160. For example, when the bottom 1215 of the first storage tank 121 abuts against the bottom 165 of the housing 160, in order to effectively ensure the mechanical strength of the first vertical surface 1211a and the third vertical surface 1212c, both the first reinforcing structure 151 and the second reinforcing structure 152 need to abut against the bottom 165 of the housing 160. When the bottom 1215 of the first storage tank 121 does not abut against the bottom 165 of the box body 160, then the bottom of the first reinforcing structure 151 only needs to abut against the bottom 1211a1 of the first vertical surface 1211a (see...). Figure 5 The first reinforcing structure 151 and the bottom 165 of the housing 160 are flush, without the first reinforcing structure 151 and the bottom 165 of the housing 160 abutting.

[0053] like Figure 4 As shown, in some embodiments, the height of the first reinforcing structure 151 and the second reinforcing structure 152 does not reach the top 166 of the housing 160. It should be understood that, on the one hand, since the height of the first storage tank 121 does not reach the top 166, the height of the first reinforcing structure 151 and the second reinforcing structure 152 does not need to reach the top 166 of the housing 160; on the other hand, there is a gap between the first reinforcing structure 151 and the second reinforcing structure 152 and the top 166, allowing air to circulate, which in turn helps to assist in the heat dissipation of the first storage tank 121 and the second storage tank 122.

[0054] In some embodiments, by providing a reinforcing structure, the abutment between the first tank 121 and the box 160, and the mutual abutment between the second tank 122 and the box 160, the mechanical strength of all side walls and bottom of the first tank 121 and all side walls and bottom of the second tank 122 can be strengthened, thereby maintaining the overall shape of the first tank 121 and the second tank 122 and preventing deformation.

[0055] In some embodiments, in order to effectively improve the mechanical strength of the first storage tank 121 and the second storage tank 122 and achieve the purpose of limiting and maintaining the shape of the first storage tank 121 and the second storage tank 122, the structure, height and specific location of the reinforcing structure should be adaptively designed according to the shape of the first storage tank 121 and the second storage tank 122 and the design of other modules.

[0056] like Figure 3 and Figure 4 As shown, in some embodiments, system 100 further includes an isolation structure 170, vertically disposed between power module 130 and electrical module 110, with the bottom of isolation structure 170 abutting against the bottom 165 of housing 160 to isolate power module 130 and electrical module 110, preventing a failure of power module 130 from affecting electrical module 110. For example, when the fuel cell stack 131 is damaged, causing electrolyte solution leakage, isolation structure 170 can prevent electrolyte solution from contacting electrical module 110.

[0057] like Figure 3 As shown, in some embodiments, the top 171 of the isolation structure 170 abuts against the top 166 of the housing 160, and the top 171 of the isolation structure 170 is provided with a hole 1711 for the connecting pipe 140 to pass through.

[0058] In some embodiments, the isolation structure 170 includes a steel partition coated with an anti-corrosion coating.

[0059] Figure 6 It shows Figure 1 The front view of the battery system of the embodiment shown. Figure 7 It shows Figure 1 Rear view of the battery system in the illustrated embodiment. Figure 6 and Figure 7 As shown, in some embodiments, the housing 160 includes a door 167, which is disposed on the outer side wall 168 of the housing 160. The fuel cell stack 131 and the door 167 are positioned correspondingly to facilitate opening the door 167 for maintenance of the fuel cell stack 131. It should be understood that the first inner side wall 161, the second inner side wall 162, the third inner side wall, and the fourth inner side wall 164 of the housing 160 described above are all located inside the housing 160, while the outer side wall 168 of the housing 160 is located outside the housing 160.

[0060] like Figure 6 and Figure 7 As shown, in some embodiments, system 100 further includes a temperature control unit, comprising: a pipe cooling device 181 connected to connecting pipe 140 to form a cooling circuit; a heat dissipation duct 182 including a fifth end (not shown) and a sixth end (not shown), the fifth end being connected to the energy storage converter 112, and the sixth end being disposed on the outer wall 168 of the housing 160; and a housing temperature control device 183 disposed on the outside of the housing 160 and close to the battery management system 111. By providing the pipe cooling device 181, the electrolyte flowing through the connecting pipe 140 can be directly cooled; by providing the housing temperature control device 183, the ambient temperature inside the housing 160 can be maintained at a suitable temperature, ensuring the stable operation of system 100; and by providing the heat dissipation duct 182, the heat from the energy storage converter 112 can be transferred to the outside of the housing 160, preventing heat accumulation inside the housing 160.

[0061] In some embodiments, the pipeline cooling device 181 includes a chiller, and the enclosure temperature control device 183 includes an industrial air conditioner.

[0062] like Figure 6 As shown, in some embodiments, system 100 further includes: a tracheal interface 191 for connecting a tracheal tube to input and output gas; and a power interface 192 for supplying power to the energy storage converter 112 or enabling system 100 to output electrical energy to an external load.

[0063] In some embodiments, system 100 further includes: a control unit (not shown) connected to electrical module 110; and an interactive interface (not shown), including a touch screen 1681 disposed on the outer side wall 168 of housing 160, the touch screen 1681 being signal-connected to control system.

[0064] In some embodiments, system 100 further includes an energy management system. In some embodiments, the touch screen 1681 can control system 100 via the Modbus TCP protocol, including local and remote control, improving the convenience of actual operation. In some embodiments, the control unit can preset start / stop settings on the interface of battery management system 111, and can also perform local manual start / stop. The touch screen 1681 can be used to set charging and discharging schedules, allowing for multiple charging and discharging cycles per day, and users can utilize peak and off-peak electricity pricing for economic benefits. In some embodiments, one-click charging / discharging and one-click capacity recovery operations can be performed on the interface of battery management system 111 on the touch screen 1681. In some embodiments, the control unit includes safety protection for the battery system, with level 1, level 2, and level 3 alarms, and alarm data and operational data acquisition and storage functions. For example, a level 1 alarm can be configured to stop and manually halt the system, and a level 3 alarm can be configured to display alarm information only on the interface of battery management system 111, indicating system problems, etc.

[0065] In some embodiments, in response to potential power outages in industrial and commercial settings, system 100 includes a black-start function, that is, after a power grid outage, system 100 can immediately respond by enabling the uninterruptible power supply (UPS) of energy storage converter 112 to power the battery-powered equipment, allowing system 100 to discharge within 30 seconds, thereby improving the industrial and commercial applicability of the battery system.

[0066] This application incorporates a reinforcing structure to enhance the mechanical strength of the capacity modules, preventing or reducing deformation of the first and second storage tanks, thus ensuring the safety of the flow battery system. By housing the electrical modules, capacity modules, power modules, connecting pipelines, and reinforcing structure within the same container—that is, integrating the entire flow battery system into a transportable container—it significantly improves the system's area utilization and convenience, reduces on-site workload and commissioning time, enhances the utilization of the site area, improves the commercialization level of the flow battery system, and lowers its cost. The reinforcing structure is designed according to the tank structure, effectively improving the tank's mechanical performance while enhancing maintenance convenience. The isolation structure effectively separates the power modules and electrical modules, further improving system safety.

[0067] While the foregoing disclosure has discussed various examples of embodiments that are currently considered useful, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments. Rather, the claims are intended to cover all modifications and equivalent combinations that conform to the substance and scope of the embodiments of this application. For example, although the system components described above can be implemented by hardware devices, they can also be implemented solely by software solutions, such as installing the described system on existing servers or mobile devices.

[0068] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0069] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit reservation. Although the numerical ranges and parameters used to confirm their breadth of range in some embodiments of this application are approximate values, in specific embodiments, such numerical values ​​are set as precisely as feasible.

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