Cascade valve hall type energy storage valve tower unit, valve tower and application of cascade valve hall type energy storage valve tower unit

Abstract

The invention provides a cascade valve hall type energy storage valve tower unit, a valve tower and application of the cascade valve hall type energy storage valve tower unit and the valve tower, and belongs to the technical field of energy storage. The system comprises a plurality of energy storage modules which are sequentially connected in series, are vertically arranged on an insulating stand column frame, and are provided with liquid inlet pipe interfaces, liquid return pipe interfaces and fire interfaces; the liquid cooling pipeline system is respectively communicated with the liquid inlet pipe interface and the liquid return pipe interface, and takes away heat from the energy storage module through circulating cooling; one end of the fire-fighting pipeline is connected to the fire-fighting main pipeline, and the other end of the fire-fighting pipeline is connected to the fire-fighting connector. The capacity of the single-valve tower unit reaches 7.6 MWh or above through the vertical stacking arrangement of the multiple energy storage modules, and compared with a traditional single 20-foot energy storage container, the single-valve tower unit has the advantages of being larger in capacity and smaller in occupied area.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage, and particularly to a cascaded valve hall type energy storage valve tower unit, a cascaded valve hall type energy storage valve tower including the cascaded valve hall type energy storage valve tower unit, and the application of the cascaded valve hall type energy storage valve tower unit or the cascaded valve hall type energy storage valve tower in a high-voltage cascaded valve hall type energy storage valve tower. Background Art

[0002] The maximum power of a conventional 35kV high-voltage direct-connected energy storage is currently 25MW, which is only 1 / 40 of the capacity of a 1000MW conventional thermal power generating unit. In the event of an incident endangering the safety and stability of the power grid, many high-voltage direct-connected energy storages connected at 35kV are difficult to support the safety and stability of the power grid due to their small single-unit capacity, low access voltage level, and long electrical distance from the main grid.

[0003] The single-unit power of a high-voltage cascaded valve hall at 110kV and above is close to that of a million-kilowatt thermal power unit, and even exceeds that of a million-kW thermal power unit. Therefore, there is an urgent need for a high-voltage cascaded valve hall type energy storage valve tower to have a huge single-unit capacity, high safety, and high efficiency, ensuring the strong power grid support ability of 110kV high-voltage direct-connected flexible energy storage. Summary of the Invention

[0004] In view of this, to solve the technical problem in the prior art that the capacity of a conventional high-voltage direct-connected energy storage is small and it is difficult to support the safety and stability of the power grid in the event of an incident endangering the safety and stability of the power grid, on the one hand, the present invention provides a cascaded valve hall type energy storage valve tower unit. By vertically stacking a plurality of energy storage modules, the capacity of a single valve tower unit reaches more than 7.6MWh, which has the advantages of larger capacity and smaller floor area compared with a traditional single 20-foot energy storage container.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A cascaded valve hall type energy storage valve tower unit, comprising:

[0007] A plurality of energy storage modules, which are connected in series in sequence and are vertically arranged on an insulating column frame, and have a liquid inlet pipe interface, a liquid return pipe interface, and a fire protection interface thereon;

[0008] A liquid cooling pipeline system, which is respectively communicated with the liquid inlet pipe interface and the liquid return pipe interface, and takes away heat from the energy storage module through circulating cooling;

[0009] A fire protection pipeline, one end of which is connected to a fire protection main pipeline, and the other end is connected to the fire protection interface, for preventing the occurrence of a fire.

[0010] Preferably, the energy storage module includes a plurality of battery clusters arranged side by side and an H-bridge;

[0011] The battery cluster is composed of a number of battery modules arranged vertically;

[0012] The H-bridge is arranged on the right side of the rightmost battery cluster.

[0013] Preferably, the battery cluster is composed of a number of battery modules connected in series, and the battery cluster is connected in parallel to the H-bridge.

[0014] Preferably, each energy storage module contains 4 groups of the battery clusters, and each group of the battery clusters is formed by connecting 6 battery modules in series.

[0015] Preferably, the number of the energy storage modules is 3 layers.

[0016] Preferably, the 3 layers of the energy storage modules respectively correspond to the first-level energy storage module, the second-level energy storage module and the third-level energy storage module from top to bottom;

[0017] The liquid cooling pipeline system includes a first-level pipeline, a second-level pipeline and a third-level pipeline, and the first-level pipeline, the second-level pipeline and the third-level pipeline respectively have a first-level liquid inlet pipe, a first-level liquid return pipe, a second-level liquid inlet pipe, a second-level liquid return pipe, a third-level liquid inlet pipe and a third-level liquid return pipe;

[0018] The first-level liquid inlet pipe and the first-level liquid return pipe are respectively communicated with the liquid inlet pipe interface and the liquid return pipe interface on the first-level energy storage module;

[0019] The second-level liquid inlet pipe and the second-level liquid return pipe are respectively communicated with the liquid inlet pipe interface and the liquid return pipe interface on the second-level energy storage module;

[0020] The third-level liquid inlet pipe and the third-level liquid return pipe are respectively communicated with the liquid inlet pipe interface and the liquid return pipe interface on the third-level energy storage module.

[0021] Preferably, the insulating column frame includes:

[0022] A frame surrounded by insulating column cross beams and insulating column longitudinal beams;

[0023] Post insulators connected to the frame for supporting the frame.

[0024] Preferably, a number of brackets for placing the battery modules are arranged between the insulating column longitudinal beams.

[0025] In a second aspect, the present invention also provides a cascaded valve hall type energy storage valve tower formed by connecting a number of the above cascaded valve hall type energy storage valve tower units in series.

[0026] In a third aspect, the present invention also provides an application of the above cascaded valve hall type energy storage valve tower unit or the above cascaded valve hall type energy storage valve tower in a high-voltage cascaded valve hall type energy storage valve tower.

[0027] The present invention has the following beneficial effects compared with the prior art:

[0028] The cascaded valve hall type energy storage valve tower unit provided by the present invention enables the capacity of a single valve tower unit to reach more than 7.6 MWh through the vertical stacking arrangement of a number of energy storage modules, significantly improving the energy storage capacity of a single valve tower unit.

[0029] Compared with the traditional single 20-foot energy storage container, it has the advantages of larger capacity and smaller floor area. Specifically as follows:

[0030] Capacity of a single valve tower unit: The capacity of a single valve tower unit above 7.6 MWh is much higher than that of the traditional 20-foot energy storage container, which is 1 - 2 MWh.

[0031] Meeting large-capacity requirements: It can meet the large-scale energy storage requirements and is applicable to scenarios such as large-scale power grid peak shaving, emergency standby, and new energy consumption.

[0032] Vertical stacking: By means of vertical stacking, the floor area is reduced, which is suitable for occasions with limited space.

[0033] High land utilization rate: Under limited land resources, it can provide a larger energy storage capacity and improve the land utilization rate.

[0034] By connecting a number of energy storage valve tower units in series, the present invention enables the single-machine power of the high-voltage cascaded valve hall with 110 kV and above to be close to that of a million-kilowatt thermal power unit, and even exceed that of a million-kW thermal power unit. It has a larger single-machine capacity and better support ability for the power grid above 110 kV. Specifically as follows:

[0035] High capacity: By connecting multiple energy storage valve tower units in series, the single-machine capacity can reach a level comparable to that of a million-kilowatt thermal power unit, and even exceed that of a million-kW thermal power unit.

[0036] Meeting large-capacity requirements: It can meet the large-scale energy storage requirements and is applicable to scenarios such as large-scale power grid peak shaving, emergency standby, and new energy consumption.

[0037] It has a stronger support ability for the power grid above 110 kV. The system adopts high-voltage cascaded technology with 110 kV and above, and can be directly connected to the main grid, reducing transmission losses and control difficulties. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is the front view of the structure of the energy storage valve tower unit of the present invention;

[0039] Figure 2 is the schematic diagram of the electrical connection of the energy storage modules in the present invention;

[0040] Figure 3 is the front view of the battery module of the present invention;

[0041] Figure 4 This is the layout diagram of the liquid cooling pipeline system of the energy storage valve tower of the present invention;

[0042] Figure 5 This is the layout diagram of the fire protection pipeline system of the energy storage valve tower of the present invention;

[0043] Figure 6 This is the present invention Figure 1 The enlarged view at location A in;

[0044] Figure 7 This is the present invention Figure 5 The enlarged view at location B in;

[0045] In the figure, 1. Battery module; 11. Inlet pipe interface; 12. Return pipe interface; 13. Fire protection interface; 14. Positive power terminal; 15. Negative power terminal; 2. Battery cluster; 3. Insulating column frame; 31. First layer post insulator; 32. Second layer post insulator; 33. Third layer post insulator; 34. Insulating column cross beam; 35. Insulating column longitudinal beam; 4. Bracket; 5. Liquid cooling pipeline system; 51. First stage inlet pipe; 52. First stage return pipe; 53. Second stage inlet pipe; 54. Second stage return pipe; 55. Third stage inlet pipe; 56. Third stage return pipe; 6. Fire protection pipeline; 7. H-bridge; 8. Energy storage module. Specific embodiments

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] As Figures 1-7 shown, the present invention provides a cascaded valve hall type energy storage valve tower unit, including:

[0050] A number of energy storage modules 8, which are connected in series in sequence and are vertically arranged on the insulating column frame 3, and have a liquid inlet pipe interface 11, a liquid return pipe interface 12 and a fire protection interface 13 thereon. The liquid inlet pipe interface 11, the liquid return pipe interface 12 and the fire protection interface 13 are specifically opened on the battery module 1 of the energy storage module 8;

[0051] A liquid cooling pipeline system 5, which is respectively communicated with the liquid inlet pipe interface 11 and the liquid return pipe interface 12, and takes away heat from the energy storage module 8 through circulating cooling;

[0052] A fire protection pipeline 6, one end of which is connected to the fire protection main pipeline, and the other end is connected to the fire protection interface 13, for preventing the occurrence of fire.

[0053] The above cascaded valve hall type energy storage valve tower unit provided by the present invention forms a single valve tower unit through a number of energy storage modules 8 connected in series in sequence. The capacity of the single valve tower unit reaches more than 7.6 MWh, significantly improving the energy storage capacity of the single valve tower unit. Compared with the traditional single 20-foot energy storage container, it has the advantages of larger capacity and smaller floor area.

[0054] In the present invention, the energy storage module 8 includes a number of battery clusters 2 arranged side by side and an H-bridge 7;

[0055] The battery cluster 2 is composed of a number of battery modules 1 arranged vertically;

[0056] The H-bridge 7 is arranged on the right side of the rightmost battery cluster 2. Specifically as follows:

[0057] The battery modules 1 are vertically arranged to form a battery cluster 2. The battery clusters 2 are arranged from left to right, and the H-bridge 7 is arranged on the right side of the rightmost battery cluster 2. The battery clusters 2 and the H-bridge 7 on the same layer form a layer (a group) of energy storage modules 8. At the middle position on the front side of the battery module 1, a positive power terminal 14 and a negative power terminal 15 are installed, which are connection points for power transmission. In the energy storage module 8, the battery clusters 2 are formed by connecting the battery modules 1 in series. The battery clusters 2 are connected in parallel to the H-bridge 7. The H-bridge 7 has a positive terminal and a negative terminal. Through these terminals, the H-bridge 7 can convert and control the electrical energy of the battery clusters 2 to achieve the distribution and use of electrical energy. This is the prior art and will not be elaborated here. Through these terminals, the H-bridge 7 can convert and control the electrical energy of the battery clusters 2 to achieve the distribution and use of electrical energy.

[0058] This design has its unique advantages:

[0059] The modular design makes the maintenance and replacement of the batteries more convenient.

[0060] The vertical arrangement can make more effective use of space, especially in some limited space environments.

[0061] The design of the H-bridge 7 makes the distribution and control of electrical energy more flexible and can be adjusted according to actual needs.

[0062] In the present invention, the battery cluster 2 is formed by connecting a plurality of battery modules 1 in series, and the battery cluster 2 is connected in parallel to the H-bridge 7.

[0063] In the present invention, each energy storage module 8 contains 4 groups of the battery clusters 2, and each group of the battery clusters 2 is formed by connecting 6 battery modules 1 in series.

[0064] In the present invention, the number of the energy storage modules 8 is 3 layers. Preferably, the energy storage modules 8 are vertically placed on the insulating column frame 3, and 3 layers of energy storage modules 8 are arranged from bottom to top.

[0065] In the present invention, the 3 layers of the energy storage modules 8 respectively correspond to the first-level energy storage module 8, the second-level energy storage module 8 and the third-level energy storage module 8 from top to bottom;

[0066] The liquid cooling pipeline system 5 includes a first-level pipeline, a second-level pipeline and a third-level pipeline. The first-level pipeline, the second-level pipeline and the third-level pipeline respectively have a first-level liquid inlet pipe 51, a first-level liquid return pipe 52, a second-level liquid inlet pipe 53, a second-level liquid return pipe 54, a third-level liquid inlet pipe 55 and a third-level liquid return pipe 56;

[0067] The first-level liquid inlet pipe 51 and the first-level liquid return pipe 52 are respectively communicated with the liquid inlet pipe interface 11 and the liquid return pipe interface 12 on the first-level energy storage module 8;

[0068] The secondary liquid inlet pipe 53 and the secondary liquid return pipe 54 are respectively communicated with the liquid inlet pipe interface 11 and the liquid return pipe interface 12 on the second-stage energy storage module 8;

[0069] The tertiary liquid inlet pipe 55 and the tertiary liquid return pipe 56 are respectively communicated with the liquid inlet pipe interface 11 and the liquid return pipe interface 12 on the third-stage energy storage module 8. Specifically as follows:

[0070] Such as Figure 4 、 6 As shown, the primary liquid inlet pipe 51 is arranged on the insulating pillar cross beam 34 at the top of the first-stage energy storage module 8 and the insulating pillar longitudinal beam 35 on the right side, and is fixed by a standard pipeline pipe clamp. Symmetrically, the primary liquid return pipe 52 is arranged on the insulating pillar cross beam 34 at the bottom of the first-stage energy storage module 8 and the insulating pillar longitudinal beam 35 on the left side.

[0071] The secondary liquid inlet pipe 53 is arranged on the insulating support longitudinal beam on the right side of the second-stage energy storage module 8, and the secondary liquid return pipe 54 is arranged on the insulating support longitudinal beam on the left side of the second-stage energy storage module 8. The secondary liquid inlet pipe 53 and the liquid return pipe are respectively connected and communicated with the primary liquid inlet pipe 51 and the liquid return pipe through standard pipe joints.

[0072] One end of the tertiary liquid inlet pipe 55 is connected to the secondary liquid inlet pipe 53, and the other end is connected to the liquid inlet pipe interface 11 on the battery module 1 of the third-stage energy storage module 8; one end of the tertiary liquid return pipe 56 is connected to the secondary liquid return pipe 54, and the other end is connected to the liquid return pipe interface 12 on the battery module 1.

[0073] The above-mentioned primary pipeline, secondary pipeline, and tertiary pipeline form a liquid cooling pipeline system 5, whose function is to mainly take away the heat from the battery module 1 through circulating coolant, and dissipate the heat to the outside through the cooling equipment, so as to maintain the temperature of the battery cells in the battery module 1, improve its performance and extend its life.

[0074] This design has the following advantages:

[0075] Through the multi-stage pipeline design, it can adapt to different levels of energy storage modules 8 to ensure that each battery module 1 can be effectively cooled.

[0076] The use of the framework composed of the insulating pillar cross beam 34 and the longitudinal beam and the post insulators can ensure the safety performance of the pipeline system and prevent problems such as circuit short circuits.

[0077] By circulating the coolant, the heat in the battery module 1 can be effectively taken away, the temperature of the battery cells can be maintained, and the battery performance and service life can be improved.

[0078] In the present invention, the insulating column frame 3 includes:

[0079] A framework, enclosed by an insulating pillar cross beam 34 and an insulating pillar longitudinal beam 35;

[0080] The post insulator is connected to the frame and is used to support the frame.

[0081] In the present invention, a plurality of brackets 4 for holding the battery modules 1 are arranged between the insulating post longitudinal beams 35, which are mainly used for carrying and fixing the battery modules 1 between layers. The battery modules 1 are installed on the brackets 4, and the brackets 4 are fixed on the insulating post longitudinal beams 35 through standard fasteners. As Figure 1 shown, the insulating post frame 3 is divided into three layers, corresponding to three layers of energy storage modules 8, that is, one layer of energy storage module 8 is installed on each layer of the insulating post frame 3. The corresponding frame is divided into three layers, and each layer of the frame is composed of a plurality of insulating post longitudinal beams 35 and insulating post cross beams 34 located above and below. In the present invention, preferably, each layer of the frame is composed of 5 insulating post longitudinal beams 35 and insulating post cross beams 34 located above and below (corresponding to the above-mentioned 4 groups of battery clusters 2). A plurality of brackets 4 are arranged vertically between adjacent insulating post longitudinal beams 35. In the present invention, the number of brackets 4 is preferably 6, corresponding to the battery cluster 2 formed by connecting 6 battery modules 1 in series as described above. Each layer of the frame is supported by post insulators, which are respectively named the first-layer post insulator 31, the second-layer post insulator 32, and the third-layer post insulator 33. The heights of the post insulators of each layer are different to meet the insulation requirements of different voltage levels. The first-layer post insulator 31 is arranged in sequence from left to right, and its top is connected to the insulating post cross beam 34 through standard fasteners. The insulating post longitudinal beam 35 is arranged above the insulating post main cross beam, and its top is also connected to the insulating post cross beam 34, thereby forming the bottom support frame of the energy storage module 8. The second-layer post insulator 32 is arranged on the insulating post cross beam 34 at the top of the bottom support frame. By analogy, the third-layer post insulator 33 is arranged on the insulating post cross beam 34 at the top of the middle support frame. The present invention only lists the structural composition of the 3-layer insulating post frame 3, and the structural compositions of other insulating post frames 3 similar to the insulating post frame 3 of the present invention but with different numbers of layers all fall within the protection scope of the present invention.

[0082] The fire-fighting pipeline 6 has one end connected to the fire-fighting main pipeline and the other end connected to the fire-fighting interface 13, and is used to prevent the occurrence of fires. Specifically, the fire-fighting pipeline 6 can be arranged along the insulating post cross beam 34 and the insulating post longitudinal beam 35, and the pipeline is connected to the fire-fighting interface 13 at the upper right side of each battery module 1. The fire-fighting pipelines 6 of each energy storage module 8 are connected in parallel to the fire-fighting main pipeline, and then form a fire-fighting pipeline 6 system. The fire-fighting pipeline 6 is preferably arranged at the front end of the insulating post frame and on the right side of the battery module 1. Its function is that when the battery module 1 has a thermal runaway, the fire-extinguishing medium enters the interior of the battery module 1 through the fire-fighting pipeline 6, and then fires are extinguished and the reignition of the fire is suppressed.

[0083] The layout and function of the fire-fighting pipeline 6 are specifically as follows:

[0084] One end of the fire pipeline 6 is connected to the main fire pipeline to ensure an adequate supply of fire extinguishing medium. The other end is connected to the fire interface 13 of each battery module 1, forming a parallel connection with each energy storage module 8. This design enables each battery module 1 to obtain effective fire protection and can respond quickly in case of a fire.

[0085] The fire pipeline 6 can be arranged along the insulating pillar cross beam 34 and the insulating pillar longitudinal beam 35. This not only facilitates installation and maintenance but also ensures that the pipeline is always near the battery module 1, improving the timeliness of fire response.

[0086] The pipeline is preferably arranged at the front end of the insulating pillar frame, on the right side of the battery module 1. This layout is to ensure that the fire extinguishing medium can directly and quickly reach the inside of the battery module 1. When thermal runaway occurs in the battery module 1, the fire extinguishing medium can quickly enter the inside of the battery module 1 through the fire pipeline 6 to extinguish the fire and inhibit the reignition of the fire.

[0087] Since each layer of the frame or each energy storage module 8 has a corresponding fire interface 13 connected to the fire pipeline 6, this design ensures that even if a fire breaks out in a certain layer or a certain battery module 1, other parts can still perform independent fire extinguishing operations through the fire pipeline 6 system, improving the reliability and flexibility of the system.

[0088] In a second aspect, the present invention also provides a cascaded valve hall type energy storage valve tower, which is composed of a series connection of several cascaded valve hall type energy storage valve tower units to form the entire energy storage valve tower system. This design has the following key features and advantages:

[0089] Modular and series design: This energy storage valve tower uses cascaded valve hall type energy storage valve tower units as basic components and forms the entire system through a series connection. This modular design makes the construction of the system more flexible, and the number of units can be increased or decreased according to actual needs to adapt to different scales of energy storage requirements.

[0090] Efficient energy storage and release: Due to the use of the combined valve hall type design, this energy storage valve tower system can achieve efficient energy storage and energy release. Each energy storage valve tower unit can independently store and release energy, thereby improving the efficiency and reliability of the entire system.

[0091] Integration of the insulating column frame 3 and the fire pipeline 6: The cascaded valve hall type energy storage valve tower unit in this energy storage valve tower system can use the insulating pillar frame to support and fix the battery module 1, and at the same time integrate the fire pipeline 6 system. The fire pipeline 6 can be arranged along the insulating pillar cross beam 34 and the insulating pillar longitudinal beam 35 to ensure timely fire extinguishing when thermal runaway occurs in the battery module 1 and improve the safety of the system.

[0092] Reliability and safety: Due to the series connection method adopted, each energy storage valve tower unit is independent. If one unit fails, the other units can still operate normally. This design improves the reliability of the entire system and reduces the risk of single-point failures. At the same time, the integration of the fire pipeline 6 also enhances the safety of the system in case of a fire.

[0093] Easy maintenance and expansion: Due to the modular design, this energy storage valve tower system is very convenient for maintenance and expansion. If it is necessary to increase or decrease the energy storage capacity, only the number of cascade valve hall type energy storage valve tower units needs to be increased or decreased accordingly. In addition, the maintenance of the system can also be carried out at the single unit level, reducing the complexity and cost of maintenance.

[0094] Thirdly, the present invention also provides the application of the above cascade valve hall type energy storage valve tower unit or the above cascade valve hall type energy storage valve tower in a high-voltage cascade valve hall type energy storage valve tower, and it can also be applicable to the ultra-high voltage field. In the high-voltage and ultra-high voltage fields, the safety and reliability of the energy storage system are of crucial importance. The design of the cascade valve hall type energy storage valve tower unit, through a modular approach, enables the energy storage valve tower system to have high flexibility and scalability. This design can meet energy storage requirements of different scales and is convenient for maintenance and expansion.

[0095] In addition, the cascade valve hall type energy storage valve tower unit also integrates the fire pipeline 6 system to ensure timely fire extinguishing when the battery module 1 has a thermal runaway, improving the safety of the system. The use of the insulating support frame not only supports and fixes the battery module 1 but also provides an integrated layout for the fire pipeline 6, optimizing the structure of the system.

[0096] In a high-voltage cascade valve hall type energy storage valve tower, the cascade valve hall type energy storage valve tower units form the entire system through a series connection method, improving the reliability and stability of the system. This design can cope with the complex environment and harsh conditions in the high-voltage and ultra-high voltage fields and ensure the safe operation of the energy storage system.

[0097] The working principle of the present invention is as follows:

[0098] The energy storage valve tower unit, energy storage valve tower and its application provided by the present invention are composed of a number of energy storage modules 8. One implementation manner is listed in the present invention, that is, the energy storage modules 8 are stacked in three layers up and down on the insulating column frame 3. The single capacity of the energy storage module 8 reaches 2.56 MWh, and the capacity of the energy storage valve tower unit reaches 7.68 MWh. When the energy storage valve tower operates, that is, during the charging and discharging process, the battery module 1 will generate heat. The present invention simultaneously provides a layout of a liquid cooling pipeline system 5. The liquid cooling pipeline system 5 can quickly and effectively take away the heat generated by the battery module 1 through the pipeline by using the high specific heat capacity and good thermal conductivity of the coolant, maintain the battery module 1 within a suitable working temperature range, ensure the stable performance of the battery module 1, improve the charging and discharging efficiency and extend the service life of the battery module 1. On the other hand, in extreme cases, there is a risk of out-of-control of the battery module 1. The present invention simultaneously provides a layout of a fire protection pipeline 6 system. The fire protection pipeline 6 system plays an indispensable role during the operation of the energy storage valve tower. Its main purpose is to prevent fires from occurring, extinguish fires in a timely manner when fires occur, and minimize the damage caused by fires to personnel, equipment and the environment. Its working principle is that when the internal temperature or certain gas components of the battery module 1 reach certain conditions, the system starts the fire extinguishing mechanism, sprays the fire extinguishing agent (such as heptafluoropropane) in the external equipment into the battery module 1 through the pipeline. The fire extinguishing agent can prevent the fire from spreading further by inhibiting the combustion reaction, reducing the oxygen concentration or isolating the fire source, prevent the fire from spreading to adjacent battery modules 1 or energy storage devices, protect the integrity of the entire energy storage valve tower, and avoid greater damage caused by the fire.

[0099] The above is only the preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A cascade valve hall type energy storage valve tower unit, characterized in that: include: Several energy storage modules are connected in series in sequence and vertically arranged on an insulating column frame, which is provided with a liquid inlet pipe interface, a liquid return pipe interface and a fire protection interface; A liquid cooling pipeline system is connected to the liquid inlet pipe interface and the liquid return pipe interface respectively, and removes heat from the energy storage module through circulating cooling; The fire-fighting pipeline is connected to the main fire-fighting pipeline at one end and to the fire-fighting interface at the other end, so as to prevent the occurrence of fire.

2. The cascade valve hall type energy storage valve tower unit according to claim 1, characterized in that: The energy storage module includes a plurality of battery clusters and H-bridges arranged side by side; The battery cluster is composed of a plurality of battery modules arranged vertically; The H bridge is arranged on the right side of the rightmost battery cluster.

3. The cascade valve hall type energy storage valve tower unit according to claim 2, characterized in that: The battery cluster is formed by connecting a plurality of battery modules in series, and the battery cluster is connected to the H bridge in parallel.

4. The cascade valve hall type energy storage valve tower unit according to claim 2, characterized in that: Each of the energy storage modules comprises four groups of battery clusters, and each group of the battery clusters is formed by connecting six battery modules in series.

5. The cascade valve hall type energy storage valve tower unit according to claim 1, characterized in that: The number of energy storage modules is 3 layers.

6. The cascade valve hall type energy storage valve tower unit according to claim 5, characterized in that: The energy storage modules of the three layers correspond to the first-level energy storage module, the second-level energy storage module and the third-level energy storage module from top to bottom respectively; The liquid cooling pipeline system comprises a primary pipeline, a secondary pipeline and a tertiary pipeline, wherein the primary pipeline, the secondary pipeline and the tertiary pipeline respectively have a primary liquid inlet pipe, a primary liquid return pipe, a secondary liquid inlet pipe, a secondary liquid return pipe, a tertiary liquid inlet pipe and a tertiary liquid return pipe; The first-level liquid inlet pipe and the first-level liquid return pipe are respectively connected to the liquid inlet pipe interface and the liquid return pipe interface on the first-level energy storage module; The secondary liquid inlet pipe and the secondary liquid return pipe are respectively connected to the liquid inlet pipe interface and the liquid return pipe interface on the second-stage energy storage module; The third-level liquid inlet pipe and the third-level liquid return pipe are respectively communicated with the liquid inlet pipe interface and the liquid return pipe interface on the third-level energy storage module.

7. A cascade valve hall type energy storage valve tower unit according to any one of claims 2 to 6, characterized in that: The insulating column frame comprises: The frame is enclosed by insulating support beams and insulating support longitudinal beams; The support insulator is connected to the frame and is used to support the frame.

8. The cascade valve hall type energy storage valve tower unit according to claim 7, characterized in that: A plurality of brackets for holding the battery modules are arranged between the insulating pillar longitudinal beams.

9. A cascade valve hall type energy storage valve tower, characterized in that: It is formed by connecting in series several cascade valve hall type energy storage valve tower units described in any one of claims 1-8.

10. Use of a cascade valve hall type energy storage valve tower unit according to any one of claims 1 to 8 or a cascade valve hall type energy storage valve tower according to claim 9 in a high pressure cascade valve hall type energy storage valve tower.

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