High-pressure cascade valve hall type energy storage module

Abstract

The utility model relates to the technical field of energy storage systems, and discloses a high-voltage cascade valve hall type energy storage module which comprises a plurality of energy storage PACKs arranged in a cascade mode, an insulation supporting platform, an H bridge module, a fire fighting device and a cooling water pipe, the plurality of energy storage PACKs are vertically stacked to form a battery pack group, and a plurality of rows of battery pack groups are transversely arranged to form the energy storage module. The base is arranged on the insulating supporting platform; the energy storage PACK comprises a plurality of single batteries which are arranged in a matrix, and a liquid cooling plate is arranged at the bottom of each single battery; the fire-fighting device comprises a fire-fighting detection box, a fire-fighting pipeline and a fire-fighting detection gas pipe, the fire-fighting pipeline provides a fire-fighting medium for each energy storage PACK and the H-bridge module, and the fire-fighting detection gas pipe performs fire-fighting detection; the H-bridge module is electrically connected with the energy storage module; and the cooling water pipe provides a cooling medium for each energy storage PACK. Large-capacity energy storage is achieved through structure stacking, and the energy storage module is simple in structure, easy to maintain and suitable for energy storage module design of a high-pressure cascade valve hall type energy storage system.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage system technical field, in particular to a high pressure cascade valve hall formula energy storage module. BACKGROUND

[0002] The energy storage application of power grid side mainly includes power auxiliary service such as peak shaving, frequency modulation, standby power supply and innovative service such as independent energy storage, with the continuous development of new energy technology, the application of energy storage in power system is more and more extensive.Energy storage provides important guarantee for the stable and continuous output of energy, and is the inevitable choice of new energy power generation promotion and supporting.

[0003] Compared with the traditional energy storage technical scheme, the high pressure cascade energy storage technology significantly improves the efficiency, the single battery capacity is greatly improved, the battery utilization rate breaks through 85%, the system response time is short, and the demand of power grid emergency dispatching can be met.In addition, the high pressure cascade technology also reduces the line loss and the loss of low voltage winding of transformer, and improves the efficiency of power station system.

[0004] But the high pressure cascade technology still has the following problems at present:

[0005] 1) the energy storage capacity of the current high pressure cascade technology is too small, and it cannot meet the demand of providing large-capacity energy service as independent energy storage, and more is used as the supplement of peak shaving, frequency modulation and standby power supply of power grid.

[0006] 2) the common structure type of current energy storage is outdoor cabinet type or outdoor prefabricated cabin structure, and the structure is complex and high in cost, and is not convenient to maintain.

[0007] 3) in terms of technology, the high pressure cascade scheme works under high voltage, and the electromagnetic environment is bad, and higher requirements are put forward for fire detection and electrical insulation.

[0008] 4) there is no large-capacity energy storage module design technology used in high pressure cascade valve hall at present. UTILITY MODEL CONTENT

[0009] The utility model aims at providing a high pressure cascade valve hall formula energy storage module, realizes large-capacity energy storage through structure stacking, and the structure is simple and easy to maintain, solves the problems of electrical insulation and fire electromagnetic interference, is especially suitable for the energy storage module design of high pressure cascade valve hall formula energy storage system, and has higher practical engineering application value.

[0010] In order to realize the above object, the utility model provides the following scheme:

[0011] The high-voltage cascade valve hall type energy storage module comprises a plurality of cascade arranged energy storage PACKs, an insulating support platform, an H-bridge module, a fire-fighting device and a cooling water pipe, a plurality of the energy storage PACKs are vertically stacked to form a battery pack group, a plurality of the battery pack groups are arranged transversely to form an energy storage module and are arranged on the insulating support platform; the energy storage PACK is a liquid-cooled battery pack and comprises a sealed box body and a plurality of battery monomers arranged in the form of a matrix in the sealed box body, a liquid cooling plate is arranged at the bottom of the battery monomer, and two liquid cooling pipe interfaces are arranged on the liquid cooling plate, one of which is used as a liquid inlet and the other is used as a liquid outlet;

[0012] The fire-fighting device comprises a fire-fighting detection box, a fire-fighting pipeline and a fire-fighting detection gas pipe, the fire-fighting pipeline is arranged between adjacent two battery pack groups and extends into the inside of each energy storage PACK and the H-bridge module, the fire-fighting detection gas pipe is arranged between any adjacent two energy storage PACKs and in the inside of the energy storage PACK, and the fire-fighting detection gas pipe is connected with the fire-fighting detection box;

[0013] The H-bridge module is electrically connected with the energy storage module, and the H-bridge module and the fire-fighting detection box are arranged on the insulating support platform;

[0014] The cooling water pipe is arranged between adjacent two battery pack groups and extends into each energy storage PACK and is connected with the liquid cooling pipe interface on the liquid cooling plate.

[0015] Further, the insulating support platform comprises a horizontal plate and a support insulator, a plurality of battery pack groups are arranged transversely on the horizontal plate, and a plurality of the support insulators are arranged at the bottom of the horizontal plate.

[0016] Further, the fire-fighting detection box is provided with a controller, a fire-fighting detection sensor and a suction device which are electrically connected with the controller, the fire-fighting detection gas pipe is connected with the suction device, and the fire-fighting detection sensor is used for fire-fighting detection of the gas collected through the fire-fighting detection gas pipe.

[0017] Further, the inlet of the fire-fighting pipeline is connected with an external fire-fighting equipment, the external fire-fighting equipment is used for providing a fire-fighting medium, and the fire-fighting pipeline is used for conveying the fire-fighting medium to a fire extinguishing position.

[0018] Further, the fire-fighting pipeline comprises an interlayer fire-fighting pipeline, an intercolumn fire-fighting pipeline and a fire-fighting branch pipeline.

[0019] The interlayer fire-fighting pipe is connected with external fire-fighting equipment and is transversely arranged at the upper portion of the energy storage module; a plurality of columnar fire-fighting pipes are connected with the interlayer fire-fighting pipe, and the columnar fire-fighting pipes are arranged between two adjacent battery pack groups; a plurality of fire-fighting branch pipes are arranged on each columnar fire-fighting pipe, one fire-fighting branch pipe is arranged in one energy storage PACK respectively, the number of the fire-fighting branch pipes is consistent with the number of the energy storage PACKs; and the end of the interlayer fire-fighting pipe is arranged in the H-bridge module.

[0020] Further, the cooling water pipe comprises an interlayer water pipe, a columnar water pipe and a branch water pipe.

[0021] The interlayer water pipe is connected with external liquid cooling units and is transversely arranged at the bottom of the energy storage module; a plurality of columnar water pipes are connected with the interlayer water pipe, and the columnar water pipes are arranged between two adjacent battery pack groups; a plurality of branch water pipes are arranged on each columnar water pipe, one branch water pipe is arranged in one energy storage PACK respectively, and the number of the branch water pipes is consistent with the number of the energy storage PACKs.

[0022] Further, the end of the interlayer water pipe is arranged in the H-bridge module.

[0023] Further, the energy storage PACK comprises 104 battery monomers of 314 Ah arranged in a matrix, the rated voltage of each battery monomer is 3.2 V, and the capacity of each energy storage PACK is 314 Ah*3.2 V*104 / 1000=104.5 kWh.

[0024] Further, six energy storage PACKs are vertically stacked and connected in series to form a battery pack group, the total capacity of the battery pack group is 104.5*6=627 kWh, and four battery pack groups are transversely arranged to form an energy storage module, and the total capacity of the energy storage module is 627*4=2508 kWh.

[0025] According to the specific embodiment provided by the utility model, the high-pressure cascade valve hall type energy storage module has the following technical effects:

[0026] The system incorporates multiple cascaded energy storage packs, with several packs vertically stacked to form battery packs. These battery packs are then arranged horizontally to form energy storage modules. This stacking structure saves space while increasing energy storage capacity. The energy storage modules are mounted on an insulated support platform, which provides both support and insulation, resolving electrical insulation and electromagnetic interference issues related to fire protection. Fire detection pipes and boxes are included, employing liquid cooling for rapid and efficient fire detection, enhancing fire suppression efficiency. This design is particularly suitable for fire protection systems designed for large-capacity energy storage modules. All energy storage packs within the module are controlled by an H-bridge module to prevent overcharging and over-discharging. This invention improves the safety and reliability of the energy storage module's operation, and its simple structure and ease of maintenance make it particularly suitable for the design of energy storage modules in high-voltage cascaded valve hall energy storage systems, demonstrating significant practical engineering application value. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Fig. 1 This is a schematic diagram of the structure of the high-pressure cascaded valve hall type energy storage module according to an embodiment of this utility model;

[0029] Fig. 2 This is a schematic diagram of the internal structure of the energy storage PACK according to an embodiment of the present invention;

[0030] Explanation of reference numerals in the attached diagram: 1. Energy storage PACK; 2. Horizontal plate; 3. Supporting insulator; 4. H-bridge module; 5. Fire detection box; 6. Inter-layer water pipe; 7. Inter-row water pipe; 8. Branch water pipe; 9. Inter-layer fire pipe; 10. Inter-row fire pipe; 11. Fire branch pipe; 12. Fire detection gas pipe; 13. Battery cell; 14. Cold plate; 15. Liquid cooling pipe interface. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In the patent description, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "center", "longitudinal", "transverse", "vertical", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0033] The utility model discloses a high pressure cascade valve hall formula energy storage module, realize large capacity energy storage through structure stack, simple structure, easy maintenance, and capacity is big, solve the electrical insulation and fire electromagnetic interference problem, especially suitable for high pressure cascade valve hall formula energy storage system's energy storage module design, have higher practical engineering application value.

[0034] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below with the drawings and specific embodiments.

[0035] As Figs. 1-2 The utility model discloses a high pressure cascade valve hall formula energy storage module, including a plurality of cascade setting energy storage PACK1, insulation support platform, H bridge module 4, fire fighting device and cooling water pipe, a plurality of energy storage PACK1 vertical stack forms battery pack group, and the battery pack group is arranged on the insulation support platform,

[0036] The energy storage PACK1 is a liquid-cooled battery pack, comprising a sealed box body and a plurality of battery monomers 13 arranged in the sealed box body in a matrix, the bottom of the battery monomer 13 is provided with a liquid cooling plate 14, and the liquid cooling plate 14 is provided with two liquid cooling pipe interfaces 15, one of which is used as a liquid inlet, and the other is used as a liquid outlet, the liquid cooling plate 14 plays a role of cooling and bearing;

[0037] The fire fighting device includes a fire fighting detection box 5, a fire fighting pipeline and a fire fighting detection gas pipe 12, the fire fighting pipeline is arranged between the adjacent two battery pack groups and extends into the inside of each energy storage PACK1 and H bridge module 4, the fire fighting detection gas pipe 12 is arranged between any adjacent two energy storage PACK1 and in the inside of the energy storage PACK1, and the fire fighting detection gas pipe 12 is connected with the fire fighting detection box 5;

[0038] The H bridge module 4 is electrically connected with the energy storage module, one H bridge module 4 is arranged in each high pressure cascade valve hall formula energy storage module, the power electronic device in the H bridge module 4 can control the output current and voltage, and overcharging and overdischarging are avoided, the H bridge module 4 adopts the conventional technology in the field of battery pack control, which will not be repeated here;

[0039] The H-bridge module 4 and the fire detection box 5 are arranged on the insulating support platform;

[0040] The cooling water pipe is arranged between two adjacent battery pack groups and extends into each energy storage PACK 1 and is connected to the liquid cooling pipe interface on the liquid cooling plate 14.

[0041] Specifically, the insulating support platform comprises a horizontal plate 2 and a support insulator 3, and a plurality of battery pack groups are arranged transversely on the horizontal plate 2, and a plurality of support insulators 3 are arranged at the bottom of the horizontal plate 2. The support insulator 3 plays a supporting and insulating role.

[0042] For example, the utility model adopts an air suction type fire detection, each energy storage PACK can be connected to the fire detection box 5 through the fire detection gas pipe 12, the fire detection box 5 is provided with a controller, a fire detection sensor and an air suction device electrically connected with the controller, the fire detection gas pipe 12 is communicated with the air suction device, and the fire detection sensor is used for fire detection on the gas collected through the fire detection gas pipe 12. Because the energy storage PACK 1 has high-voltage electromagnetic interference, the fire detection gas pipe 12 adopts an insulating plastic material, and only an insulating gas pipe is connected between each energy storage PACK 1 and the fire detection box 5, and there is no circuit signal transmission, thereby effectively solving the problem of false alarm of high-voltage cascade energy storage fire detection caused by electromagnetic interference.

[0043] The fire detection box 5 is a hollow box structure, the fire detection sensor is a characteristic gas sensor or a smoke sensor, the characteristic gas sensor is used for detecting the concentration of thermal runaway characteristic gas in the sealed box, and the thermal runaway characteristic gas comprises H2, CO, CO2 and VOC. The air suction device can adopt a fan or the like.

[0044] The inlet of the fire pipe is connected with an external fire-fighting equipment, the external fire-fighting equipment is used for providing a fire-fighting medium, and the fire pipe is used for conveying the fire-fighting medium to a position to be extinguished. The energy storage module is provided with the fire pipe, and external fire extinguishing agents can be conveyed into each energy storage PACK and the H-bridge module through the fire pipe for fire extinguishing. The fire extinguishing agents can be selected from high-efficiency fire extinguishing agents such as perfluorohexanone and heptafluoropropane.

[0045] Specifically, the fire pipe comprises an interlayer fire pipe 9, an intercolumn fire pipe 10 and a fire branch pipe 11.

[0046] The interlayer fire-fighting pipe 9 is connected with external fire-fighting equipment and is transversely arranged at the upper portion of the energy storage module; a plurality of columnar fire-fighting pipes 10 are connected on the interlayer fire-fighting pipe 9, and the columnar fire-fighting pipes 10 are arranged between two adjacent battery pack groups; a plurality of fire-fighting branch pipes 11 are arranged on each columnar fire-fighting pipe 10, and one fire-fighting branch pipe 11 respectively penetrates into one energy storage PACK 1, and the number of the fire-fighting branch pipes 11 is consistent with the number of the energy storage PACK 1; and the end of the interlayer fire-fighting pipe 9 penetrates into the interior of the H-bridge module 4.

[0047] The external fire-fighting equipment is communicated to each energy storage PACK 1 and H-bridge module 4 through the interlayer fire-fighting pipe 9, the columnar fire-fighting pipe 10 and the fire-fighting branch pipe 11, and when thermal runaway occurs, the fire extinguishing agent is delivered to the interior of each energy storage PACK 1 and H-bridge module 4 to extinguish the fire.

[0048] The energy storage PACK and the H-bridge module adopt liquid cooling heat dissipation, and the heat is taken away by the liquid cooling plate 4 at the bottom of the energy storage PACK through the interlayer water pipe 6, the columnar water pipe 7 and the branch water pipe 8.

[0049] Specifically, the cooling water pipe comprises the interlayer water pipe 6, the columnar water pipe 7 and the branch water pipe 8.

[0050] The interlayer water pipe 6 is connected with an external liquid cooling unit and is transversely arranged at the bottom of the energy storage module; a plurality of columnar water pipes 7 are connected on the interlayer water pipe 6, and the columnar water pipes 7 are arranged between two adjacent battery pack groups; a plurality of branch water pipes 8 are arranged on each columnar water pipe 7, and one branch water pipe 8 respectively penetrates into one energy storage PACK 1, and the number of the branch water pipes 8 is consistent with the number of the energy storage PACK 1.

[0051] The end of the interlayer water pipe 6 penetrates into the interior of the H-bridge module 4.

[0052] The external liquid cooling unit provides continuous cooling medium, and each energy storage PACK is distributed with the cooling medium to the liquid cooling plate at the bottom through the interlayer water pipe 6, the columnar water pipe 7 and the branch water pipe 8 to take away the heat of the battery monomer and maintain each battery monomer to work in a safe temperature range.

[0053] In the embodiment of the utility model, the energy storage PACK 1 internally comprises 104 battery monomers 13 of 314Ah arranged in a matrix, the rated voltage of each battery monomer 13 is 3.2V, and the capacity of each energy storage PACK is 314Ah*3.2V*104 / 1000=104.5kWh.

[0054] 6 of the energy storage PACK1 vertical stack and series form a battery pack group, the total capacity of the battery pack group is 104.5*6=627kWh; 4 rows of battery pack groups are arranged horizontally to form an energy storage module, and the total capacity of the energy storage module is 627*4=2508kWh.

[0055] The high-voltage cascade valve hall type energy storage module adopts a support insulator 3 to realize support and electrical insulation, and a plurality of energy storage modules can be simply stacked to form a tower-shaped energy storage valve tower structure, and the support insulator 3 provides electrical insulation and weight support when stacked and arranged, and is particularly suitable for being used as an energy storage module of a large-capacity high-voltage cascade valve hall type energy storage system, so as to realize the construction of the large-capacity high-voltage cascade valve hall type energy storage system.

[0056] The typical model of the battery monomer is 314Ah, and other specifications of the battery monomer model can also be used. The typical number of energy storage PACK inside the battery monomer is 104, and other numbers of combinations can also be used. The number, layer height and column number of the energy storage PACK inside the energy storage module can also be combined based on needs.

[0057] The high-voltage cascade valve hall type energy storage module provided by the embodiment of the utility model realizes large-capacity energy storage, has simple structure and is easy to maintain, and the energy storage modules are convenient to stack and assemble, and can be used as a unit of a large-capacity high-voltage cascade valve hall type energy storage system.

[0058] The principle and implementation mode of the utility model are described in the specific examples in this paper, and the above embodiment is only used to help understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the utility model, the specific implementation mode and application range will be changed. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A high pressure cascade valve hall type energy storage module characterized by, The application relates to a battery energy storage system, which comprises a plurality of energy storage PACKs (1) arranged in cascade, an insulating support platform, an H-bridge module (4), a fire-fighting device and a cooling water pipe, a plurality of the energy storage PACKs (1) are vertically stacked to form a battery pack group, a plurality of the battery pack groups are horizontally arranged to form an energy storage module and are arranged on the insulating support platform; the energy storage PACK (1) is a liquid-cooled battery pack and comprises a sealed box body and a plurality of battery monomers (13) arranged in a matrix in the sealed box body; a liquid cooling plate (14) is arranged at the bottom of the battery monomer (13); two liquid cooling pipe interfaces (15) are arranged on the liquid cooling plate (14), one of which is used as a liquid inlet and the other is used as a liquid outlet. The fire-fighting device comprises a fire-fighting detection box (5), a fire-fighting pipeline and a fire-fighting detection gas pipe (12); the fire-fighting pipeline is arranged between two adjacent battery pack groups and penetrates into each energy storage PACK (1) and the H-bridge module (4); the fire-fighting detection gas pipe (12) is arranged between any two adjacent energy storage PACKs (1) and in each energy storage PACK (1); the fire-fighting detection gas pipe (12) is connected with the fire-fighting detection box (5). The H-bridge module (4) is electrically connected with the energy storage module; the H-bridge module (4) and the fire-fighting detection box (5) are arranged on the insulating support platform. The cooling water pipe is arranged between two adjacent battery pack groups and penetrates into each energy storage PACK (1) and is connected with the liquid cooling pipe interface on the liquid cooling plate (14).

2. The high-pressure cascade valve hall energy storage module of claim 1, wherein, The insulating support platform comprises a horizontal plate (2) and a support insulator (3); a plurality of battery pack groups are horizontally arranged on the horizontal plate (2); a plurality of the support insulators (3) are arranged at the bottom of the horizontal plate (2).

3. The high pressure cascade valve hall energy storage module of claim 1, wherein, The fire-fighting detection box (5) is provided with a controller, a fire-fighting detection sensor electrically connected with the controller and an air suction device; the fire-fighting detection gas pipe (12) is connected with the air suction device; the fire-fighting detection sensor is used for fire-fighting detection of the gas collected through the fire-fighting detection gas pipe (12).

4. The high pressure cascade valve hall energy storage module of claim 1, wherein, The inlet of the fire-fighting pipeline is connected with an external fire-fighting equipment; the external fire-fighting equipment is used for providing a fire-fighting medium; the fire-fighting pipeline is used for conveying the fire-fighting medium to a position to be extinguished.

5. The high-pressure cascade valve hall energy storage module of claim 4, wherein, The fire-fighting pipeline comprises an interlayer fire-fighting pipeline (9), an intercolumn fire-fighting pipeline (10) and a fire-fighting branch pipeline (11). The interlayer fire-fighting pipeline (9) is connected with the external fire-fighting equipment and is horizontally arranged at the upper portion of the energy storage module; a plurality of the intercolumn fire-fighting pipelines (10) are connected with the interlayer fire-fighting pipeline (9); the intercolumn fire-fighting pipelines (10) are arranged between two adjacent battery pack groups; a plurality of the fire-fighting branch pipelines (11) are arranged on each intercolumn fire-fighting pipeline (10); one fire-fighting branch pipeline (11) penetrates into one energy storage PACK (1); the number of the fire-fighting branch pipelines (11) is consistent with the number of the energy storage PACKs (1); the end of the interlayer fire-fighting pipeline (9) penetrates into the H-bridge module (4).

6. The high-pressure cascade valve hall energy storage module of claim 1, wherein, The cooling water pipe comprises an interlayer water pipe (6), an intercolumn water pipe (7) and a branch water pipe (8). The interlayer water pipe (6) is connected with an external liquid cooling unit and is transversely arranged at the bottom of the energy storage module; a plurality of column water pipes (7) are connected to the interlayer water pipe (6), and the column water pipes (7) are arranged between two adjacent battery pack groups; a plurality of branch water pipes (8) are arranged on each column water pipe (7), and one branch water pipe (8) respectively penetrates into one energy storage PACK (1); the number of the branch water pipes (8) is consistent with the number of the energy storage PACKs (1).

7. The high-pressure cascade valve hall energy storage module of claim 6, wherein, The end of the interlayer water pipe (6) penetrates into the inside of the H-bridge module (4).

8. The high-pressure cascade valve hall energy storage module of claim 1, wherein, The energy storage PACK (1) internally includes 104 battery monomers (13) arranged in a matrix, each battery monomer (13) has a rated voltage of 3.2V, and the capacity of each energy storage PACK is 314Ah×3.2V×104 / 1000=104.5kWh.

9. The high-pressure cascade valve hall energy storage module of claim 8, wherein, Six energy storage PACKs (1) are vertically stacked and connected in series to form a battery pack group, and the total capacity of the battery pack group is 104.5×6=627kWh; four column battery pack groups are transversely arranged to form an energy storage module, and the total capacity of the energy storage module is 627×4=2508kWh.

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