CN217426907U - Immersed energy storage system and power station - Google Patents

Abstract

The utility model discloses an submergence formula energy storage system and power station, include: the energy storage module is arranged in the closed outer shell; the heat dissipation device comprises an energy storage module, a heat conduction assembly, a heat dissipation assembly and a heat dissipation assembly, wherein the energy storage module is a liquid-cooling energy storage module provided with a liquid-cooling pipeline, the heat conduction assembly comprises a liquid-cooling circulation system, the liquid-cooling circulation system comprises a liquid-cooling circulation unit and a heat dissipation pipeline, and the liquid-cooling circulation unit is used for conveying heat of the energy storage module to the heat dissipation pipeline; the heat dissipation pipeline is at least partially formed on the closed outer shell. In the practical application process, the heat energy that the energy storage module produced passes through liquid cooling circulation system and transmits to the closed shell body, because the closed shell body submergence is below the water liquid level, heat conduction, heat dissipation, the cooling performance of can make full use of water, it is better to take away the heat dissipation stability with the heat of closed shell body to installation operation maintenance is simple, greatly reduced the cost.

Description

Immersed energy storage system and power station

Technical Field

The utility model relates to a power generation technical field, more specifically say, relate to an submergence formula energy storage system and power station.

Background

Photovoltaic over water has been a great development in recent years. With the gradual combined application of wind energy, photovoltaic and energy storage, the application range of the energy storage equipment is wider and wider. But the energy storage system has heavy weight, needs effective heat dissipation, and has high cost and poor stability when floating on the water surface. In the existing overwater photovoltaic and wind power energy storage scheme, an energy storage system is mostly over-dispersed and floats on the water surface, so that the stability is poor, the protective performance is low, and the installation and maintenance cost is high.

In summary, how to solve the problems of high cost and poor stability of the energy storage system floating on the water surface has become a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an submergence formula energy storage system and power station to solve the problem that energy storage system surface of water floats with high costs and poor stability.

In order to achieve the above object, the utility model provides a following technical scheme:

an immersed energy storage system comprising:

the closed outer shell is used for being immersed below the liquid level of the water body;

the energy storage module is arranged in the closed outer shell and can store electric energy;

the heat conduction assembly is used for conducting heat of the energy storage module to the closed outer shell;

the energy storage module is a liquid-cooling energy storage module provided with a liquid-cooling pipeline, the heat conduction assembly comprises a liquid-cooling circulating system, the liquid-cooling circulating system comprises a liquid-cooling circulating unit and a heat dissipation pipeline, and the liquid-cooling circulating unit is used for conveying heat of the energy storage module to the heat dissipation pipeline; the heat dissipation pipeline is at least partially formed on the closed outer shell.

Optionally, the liquid cooling outlet of the liquid cooling circulating unit is communicated with the liquid inlet of the liquid cooling pipeline, the liquid outlet of the liquid cooling pipeline is communicated with the liquid inlet of the heat dissipation pipeline, and the liquid outlet of the heat dissipation pipeline is communicated with the liquid cooling inlet of the liquid cooling circulating unit.

Optionally, the heat dissipation pipeline on the closed outer shell is a preset heat dissipation pipeline formed on the wall of the closed outer shell in an integral injection molding manner; or the embedded heat dissipation pipeline is embedded on the inner shell wall of the closed outer shell.

Optionally, the heat dissipation pipeline is arranged on the wall of the closed outer shell in a liquid cooling straight pipe manner; or the shell wall of the closed outer shell is arranged in a liquid-cooling serpentine bent pipe mode.

Optionally, a flow disturbing device for accelerating the flow of the water body outside the closed outer shell is further arranged on the shell wall of the closed outer shell.

Optionally, the closed outer shell comprises a main shell with openings at two ends, a first closed door body arranged at one end of the main shell and a second closed door body arranged at the other end of the main shell; the first closed door body and the main shell are of an integrated structure; the second closed door body with the main casing body is detachable sealing connection.

Optionally, the liquid cooling circulation unit is installed in the closed outer shell and is arranged close to the first closed door body.

Optionally, the heat conduction assembly further comprises a plurality of heat conduction fins arranged on the inner wall of the main housing, and the heat conduction fins can transfer heat energy emitted by the energy storage module to the closed housing.

Optionally, the heat conduction fin faces the energy storage module to form a limiting edge, and the limiting edge is used for limiting the installation position of the energy storage module.

Optionally, the heat conduction fins extend axially on the inner peripheral wall surface of the main housing and are uniformly arranged along the circumferential direction, and the limiting edges are circumferentially arranged to form an installation cavity of the energy storage module.

Optionally, the energy storage module is mounted in the mounting cavity in a drawing manner.

Optionally, the heat conduction assembly further comprises a turbulent fan which is arranged close to the first closed door body, and a gap between every two adjacent heat conduction fins forms a ventilation channel of the turbulent fan.

Optionally, a cable connection sealing assembly is arranged on the second closed door body, and the conveying cable is connected with the energy storage module through the cable connection sealing assembly.

Optionally, a fire fighting system is further arranged in the closed outer shell, and the fire fighting system comprises a fire fighting unit, a temperature-sensitive smoke sensing unit and a monitoring unit; the fire fighting unit is used for carrying out fire extinguishing operation on the energy storage module; the temperature-sensing smoke sensing unit is used for detecting the temperature and the smoke concentration inside the closed outer shell; the monitoring unit is used for visually monitoring the inside of the closed outer shell.

Optionally, the closed outer casing includes a main casing with openings at two ends, a first closed door body disposed at one end of the main casing and with an opening at the other end of the main casing, and a second closed door body disposed at the other end of the main casing, where the first closed door body and the main casing are of an integrated structure, and the second closed door body and the main casing are detachably and hermetically connected; the fire control unit set up in first closed door body, the temperature sensing smoke feels the unit with the monitoring unit all sets up in the inboard of second closed door body.

Optionally, a pressure relief assembly is further disposed on the wall of the outer enclosure.

Optionally, the closed outer shell comprises a main shell with openings at two ends, a first closed door body arranged at one end of the main shell and with an opening at the other end of the main shell, and a second closed door body arranged at the other end of the main shell, wherein the first closed door body and the main shell are of an integrated structure, and the second closed door body is detachably and hermetically connected with the main shell; the pressure relief assembly is arranged on the second closed door body.

Optionally, the energy storage module further comprises a control unit for controlling the electric quantity storage and the power grid access of the energy storage module, and the control unit is arranged inside the closed outer shell or outside the closed outer shell.

Optionally, the casing wall of the closed outer casing is further provided with a fixing device; the closed outer shell can be fixed at the water bottom through the fixing device, and/or is fixedly suspended below the liquid level of the water body through the fixing device and the anchoring assembly.

Compared with the introduction content of the background technology, the submerged energy storage system comprises: the closed outer shell is used for being immersed below the liquid level of the water body; the energy storage module is arranged in the closed outer shell and can store electric energy; the heat conduction assembly is used for conducting heat of the energy storage module to the closed outer shell; the heat dissipation device comprises an energy storage module, a heat conduction assembly, a heat dissipation assembly and a heat dissipation assembly, wherein the energy storage module is a liquid-cooling energy storage module provided with a liquid-cooling pipeline, the heat conduction assembly comprises a liquid-cooling circulation system, the liquid-cooling circulation system comprises a liquid-cooling circulation unit and a heat dissipation pipeline, and the liquid-cooling circulation unit is used for conveying heat of the energy storage module to the heat dissipation pipeline; the heat dissipation pipeline is at least partially formed on the closed outer shell. In the immersed energy storage system, in the practical application process, heat energy generated by an energy storage module is transferred to a closed outer shell through a liquid cooling circulating system, specifically, a liquid cooling circulating unit is used for conveying heat of the energy storage module to a heat dissipation pipeline, at least part of the heat dissipation pipeline is formed on the closed outer shell, and then the heat can be transferred to the closed outer shell through heat exchange, the closed outer shell is immersed below the liquid level of a water body, so that the heat conduction, heat dissipation and cooling performances of water can be fully utilized, the heat of the closed outer shell is taken away, the heat dissipation and cooling of the energy storage module are finally realized, meanwhile, the immersed energy storage system is positioned below the liquid level of the water body, the interference of wind and water waves can be avoided, and the protection performance is high; in addition, the liquid cooling circulation system can meet the requirements of larger heat dissipation capacity and higher power, has better heat dissipation stability, can save water surface space and arrange more photovoltaic or wind power equipment compared with the system floating on the water surface, saves floating equipment, is simple to install, operate and maintain, and greatly reduces the cost.

Additionally, the utility model also provides a power station, including submergence formula energy storage system, this submergence formula energy storage system is the submergence formula energy storage system that any scheme described above. Since the immersed energy storage system has the above technical effects, the power station having the immersed energy storage system also has corresponding technical effects, which are not described herein again.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an immersed energy storage system according to an embodiment of the present invention, which employs a liquid cooling circulation system for heat conduction at a first viewing angle (shown with a transmission cable and a partially removed closed outer shell);

fig. 2 is a schematic structural view of an immersion energy storage system according to an embodiment of the present invention, which employs a liquid cooling circulation system for heat conduction at a second viewing angle (in the illustration, a part of the closed outer shell without a transmission cable is removed);

fig. 3 is a schematic structural diagram of an immersed energy storage system according to an embodiment of the present invention, in which heat conduction fins are used for heat conduction at a first viewing angle (a liquid cooling circulation system is not shown in the figure);

fig. 4 is a schematic structural diagram of an immersion energy storage system according to an embodiment of the present invention, which uses heat-conducting fins for heat conduction at a second viewing angle (a liquid cooling circulation system is not shown in the figure).

Wherein, in fig. 1-4:

the device comprises a closed outer shell 1, a main shell 11, a first closed door 12, a second closed door 13, a cable connection sealing assembly 13a, a fixing device 14, an energy storage module 2, a conveying cable 3, a liquid cooling circulating unit 4, a heat dissipation pipeline 5, a heat conduction fin 6, a turbulent flow fan 7, a fire-fighting unit 81, a temperature-sensitive smoke sensing unit 82, a monitoring unit 83, a pressure relief assembly 9 and a control unit 10.

Detailed Description

The core of the utility model lies in providing an submergence formula energy storage system and power station to solve the problem that energy storage system surface of water floats with high costs and poor stability.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention provides an immersed energy storage system, including: the closed outer shell 1 is used for being immersed below the liquid level of the water body; the energy storage module 2 is arranged in the closed outer shell 1 and can store electric energy; the heat conduction assembly is used for conducting the heat of the energy storage module 2 to the closed outer shell 1; the energy storage module 2 is a liquid-cooled energy storage module equipped with a liquid-cooled pipeline, the heat conduction assembly comprises a liquid-cooled circulation system, the liquid-cooled circulation system comprises a liquid-cooled circulation unit 4 and a heat dissipation pipeline 5, and the liquid-cooled circulation unit 4 is used for conveying heat of the energy storage module 2 to the heat dissipation pipeline 5 (the specific conveying mode can be that a liquid-cooled outlet of the liquid-cooled circulation unit 4 is communicated with a liquid inlet of the liquid-cooled pipeline, a liquid outlet of the liquid-cooled circulation unit 4 is communicated with a liquid inlet of the heat dissipation pipeline 5, and a liquid outlet of the heat dissipation pipeline 5 is communicated with a liquid-cooled inlet of the liquid-cooled circulation unit 4; the heat radiation pipe 5 is at least partially formed on the closed outer case 1.

In the practical application process of the immersed energy storage system, the heat energy generated by the energy storage module is transferred to the closed outer shell through the liquid cooling circulating system, specifically, the liquid cooling circulating unit conveys cooling liquid to a liquid cooling pipeline of the liquid cooling energy storage module through the liquid cooling outlet, the energy storage module is cooled by heat dissipation and then is conveyed to the heat dissipation pipeline through the liquid outlet of the liquid cooling pipeline of the liquid cooling energy storage module, because the heat dissipation pipeline is at least partially formed on the closed outer shell, heat can be transferred to the closed outer shell through heat exchange, the closed outer shell is immersed below the liquid level of the water body, the heat conduction, heat dissipation and cooling performances of water can be fully utilized, the heat of the closed outer shell is taken away, and finally the heat dissipation and cooling of the energy storage module are realized, meanwhile, the immersed energy storage system is positioned below the liquid level of the water body, so that the interference of wind and water waves can be avoided, and the protection performance is high; in addition, the liquid cooling circulation system can meet the requirements of larger heat dissipation capacity and higher power, has better heat dissipation stability, can save water surface space and arrange more photovoltaic or wind power equipment compared with the system floating on the water surface, saves floating equipment, is simple to install, operate and maintain, and greatly reduces the cost.

It should be noted here that, the submerged energy storage system should generally further have a transmission cable 3, where the transmission cable 3 is mainly used to connect the energy storage module 2 with an external device, where the transmission cable 3 may pass through the closed outer shell 1 in a sealed manner and then be connected with the energy storage module 2, or an extraction conduit may be arranged outside the closed outer shell 1, a free end of the extraction conduit extends above the water surface, and the transmission cable 3 is located in an inner cavity of the extraction conduit, and in an actual application process, the arrangement may be selected according to actual requirements, which is not more specifically limited herein.

In addition, the water body can be a water area suitable for an overwater photovoltaic or overwater wind field, such as a river, a lake, a sea area and the like, and can also be an artificially manufactured water area, and the technical effects can be produced.

It should be further noted that the external shape of the closed outer shell 1 may be a structure with an elliptical longitudinal section, a spherical structure or a polyhedral structure, and the like, and all of the structures can effectively resist water pressure, and in the actual application process, the structures can be configured into corresponding shapes according to actual requirements; the immersed energy storage system can be horizontally placed under water or vertically placed under water, and the placement mode can be selected according to actual requirements. It should be noted that a group of energy storage modules 2 may be arranged inside the sealed outer casing 1, or may be designed into multiple groups, and one or more layers of support fixing slide rails may be arranged inside the sealed outer casing 1 for fixing more energy storage modules 2.

In some specific embodiments, the heat dissipation pipeline 5 on the closed outer casing 1 may be a preset heat dissipation pipeline formed on the wall of the closed outer casing 1 in an integral injection molding manner; or an embedded heat dissipation pipeline embedded in the wall of the closed outer casing 1. In the practical application process, can select to arrange according to actual demand, mainly can realize with the heat transfer of energy storage module 2 to the closed shell body 1 can.

It should be noted that the heat dissipation pipeline 5 may be specifically arranged on the wall of the closed outer casing 1 in a liquid cooling straight pipe manner; or may be arranged on the wall of the closed outer casing 1 in the form of a liquid-cooled serpentine. In the practical application process, the arrangement may be selected according to the practical requirements, and is not limited in more detail herein.

In a further embodiment, in order to enhance the heat dissipation effect of the fluid outside the closed outer shell 1, a flow disturbing device for accelerating the flow of the water outside the closed outer shell 1 is further arranged on the wall of the outer shell of the closed outer shell 1. The spoiler device may be specifically a structural form in which a motor drives spoiler blades, or other spoiler structures commonly used by those skilled in the art, and will not be described herein again.

In some specific embodiments, the sealed outer casing 1 may specifically include a main casing 11 having openings at two ends, a first sealed door 12 disposed at one end of the main casing 11 and a second sealed door 13 disposed at the other end of the main casing 11; the first sealing door 12 and the main housing 11 are integrated, i.e. integrally formed, or fixed as a whole in a split manner, for example, by welding; the second closing door 13 is detachably and hermetically connected with the main casing 11. Through will seal shell body 1 and design into above-mentioned structural style, conveniently seal the processing of shell body on the one hand, on the other hand passes through the sealed connection structure dismantled of the second closure door body 13 for the installation maintenance operation of energy storage module is more convenient.

In a further embodiment, the liquid cooling circulation unit 4 may be specifically installed in the sealed outer casing 1 and disposed near the first sealed door 12, and is designed at a position near the first sealed door 12, so that the liquid cooling circulation unit is more convenient to install.

In some specific embodiments, the heat conduction assembly may further include a plurality of heat conduction fins 6 disposed on the inner wall of the main housing 11, and the heat conduction fins 6 may transfer heat energy emitted from the energy storage module 2 to the closed outer housing 1. Besides being used as a heat conduction assembly, the liquid cooling circulation system can also perform auxiliary heat conduction through the heat conduction fins 6, so that the heat energy of the energy storage module 2 can be more quickly transferred to the closed outer shell 1; and when the liquid cooling circulation system breaks down, heat conduction fin 6 can guarantee basic heat dissipation demand, avoids energy storage module 2 direct burning.

In a further embodiment, the heat conducting fins 6 form a limiting edge towards the energy storage module 2, and the limiting edge is used for limiting the installation position of the energy storage module 2. Through the arrangement mode, the heat conduction fins 6 not only can achieve the purpose of heat transfer, but also can achieve the purpose of limiting the energy storage module 2.

In a further embodiment, the heat conducting fins 6 extend axially on the inner peripheral wall surface of the main housing 11 and are uniformly arranged along the circumferential direction, and the limiting edges are circumferentially arranged to form an installation cavity enclosing the energy storage module 2. Arrange through spacing border and enclose into the installation cavity, can avoid designing the installing support in the closed shell body 1 for heat conduction fin 6 can have the effect of heat transfer and fixed energy storage module 2 concurrently.

In some specific embodiments, the energy storage module 2 may be specifically designed to be mounted in a drawing manner in the mounting cavity. Install in the installation intracavity through the mode of pull for energy storage module 2's installation is convenient and fast more. It is understood that the above-mentioned installation by drawing is only a preferred example of the embodiment of the present invention, and in the practical application, other installation manners may be adopted, which is not limited herein.

In some more specific embodiments, the heat conduction assembly may further include a spoiler fan 7 disposed adjacent to the first closed door 12, and a gap between two adjacent heat conductive fins 6 forms an air passage of the spoiler fan 7. Can make energy storage module 2 have forced air cooling's effect through design vortex fan 7, through the inside thermal current trend of directional control, can help promoting energy storage module 2's radiating effect. It should be noted that the turbulent fan 7 may be designed to be disposed close to the liquid cooling circulation unit 4, so that the turbulent fan can also enhance the cooling effect on the liquid cooling circulation unit 4.

In some specific embodiments, the second door 13 may be provided with a cable connection sealing assembly 13a, and the transmission cable 3 is connected to the energy storage module 2 through the cable connection sealing assembly 13 a. The cable connection closure assembly 13a may specifically include a pipe formed on the second closure door 13 and a sealing member such as a sealing ring or sealant disposed in the pipe.

In some more specific embodiments, a fire protection system may be further disposed inside the enclosed outer casing 1, and the fire protection system may specifically include a fire protection unit 81, a temperature-sensitive smoke sensing unit 82, and a monitoring unit 83; the fire fighting unit 81 is used for carrying out fire fighting operation on the energy storage module 2; the temperature-sensing smoke sensing unit 82 is used for detecting the temperature and the smoke concentration inside the closed outer shell 1; the monitoring unit 83 is used for visually monitoring the inside of the closed outer casing 1. When temperature sensing smoke sensing unit 82 detects that the inside temperature of closed shell body 1 surpasss preset temperature value, when flue gas concentration reaches preset flue gas concentration value, fire control unit 81 triggers the operation of putting out a fire, and monitoring unit 83 can also real-time supervision closed shell body 1 in the behavior simultaneously, can realize finding immediately and handle immediately. It should be noted that, the specific fire extinguishing mode of the fire extinguishing unit 81 may adopt gas to extinguish fire, and may also introduce an external water source to directly extinguish fire, and this fire extinguishing mode has lower cost and higher safety.

In a further embodiment, when the closed outer casing 1 specifically includes a main casing 11 having two open ends, a first closed door 12 disposed at one open end of the main casing 11, and a second closed door 13 disposed at the other open end of the main casing 11, the first closed door 12 and the main casing 11 are of an integrated structure, and the second closed door 13 and the main casing 11 are detachably and sealingly connected, the fire fighting unit 81 is preferably disposed on the first closed door 12, so as to facilitate installation and arrangement of the fire fighting unit 81; in addition, it is generally preferable that both the temperature-sensitive smoke sensing unit 82 and the monitoring unit 83 are provided inside the second sealing door 13, so that the temperature-sensitive smoke sensing unit 82 and the monitoring unit 83 can be more easily attached and detached for maintenance.

In some specific embodiments, the wall of the closed outer casing 1 may further be provided with a pressure relief assembly 9. Through arranging pressure relief assembly 9, when sealing 1 internal pressure of shell body when too high, can in time carry out the pressure relief, improve the security of whole equipment.

In a further embodiment, when the closed outer casing 1 includes a main casing 11 having openings at two ends, a first closed door 12 disposed at one end of the main casing 11 and a second closed door 13 disposed at the other end of the main casing 11, the first closed door 12 and the main casing 11 are integrated, and the second closed door 13 and the main casing 11 are detachably and hermetically connected, the pressure relief assembly 9 is preferably disposed on the second closed door 13. Through setting up pressure relief subassembly 9 in two closed door bodies 13, can make things convenient for more to carry out the dismouting to pressure relief subassembly 9 and maintain.

In some more specific embodiments, the submerged energy storage system may further include a control unit 10 for controlling the electric quantity storage and the power grid access of the energy storage module 2, where the control unit 10 may be specifically disposed inside the closed outer shell 1, or may be disposed outside the closed outer shell 1, for example, above the liquid level of the water body, and in the actual application process, the arrangement may be selected according to actual requirements.

In some more specific embodiments, the housing wall of the closed outer housing 1 may be further provided with a fixing device 14; the closed outer shell 1 can be fixed on the water bottom through the fixing device 14, and can also be connected with the anchoring component through the fixing device 14 to be suspended below the liquid level of the water body.

Additionally, the utility model also provides a power station, including submergence formula energy storage system, this submergence formula energy storage system is the submergence formula energy storage system that any scheme described above. Since the immersed energy storage system has the above technical effects, the power station having the immersed energy storage system also has corresponding technical effects, which are not described herein again.

It should be noted that the power station is particularly an overwater power station, such as an overwater photovoltaic power station, a wind-solar hybrid power station, and the like.

The utility model provides an submergence formula energy storage system effectively utilizes under the normality winter lakebed temperature minimum about 4 ℃, and summer highest temperature generally can not exceed this characteristics of 35 ℃. The energy storage system is completely immersed in water, and the lake water or seawater is used for dissipating heat of the energy storage system, so that the characteristic of constant underwater temperature is effectively utilized, and the influence of high temperature on the water surface and strong wind and strong waves on the energy storage module is avoided.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

It should be understood that the use of "system," "device," "unit," and/or "module" herein is merely one way to distinguish between different components, elements, components, parts, or assemblies of different levels. However, other words may be substituted by other expressions if they accomplish the same purpose.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" are intended to cover only the explicitly identified steps or elements as not constituting an exclusive list and that the method or apparatus may comprise further steps or elements. An element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

If used herein, a flowchart is provided to illustrate operations performed by a system according to an embodiment of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, the various steps may be processed in reverse order or simultaneously. Meanwhile, other operations may be added to or removed from these processes.

It should also be noted that in this document, terms such as "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, so that an article or apparatus including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.

The principle and the implementation of the present invention are explained by applying a specific embodiment, and the description of the above embodiment is only used to help understand the core idea of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (20)

1. An immersed energy storage system, comprising:

the closed outer shell (1) is used for being immersed below the liquid level of the water body;

the energy storage module (2) is arranged in the closed outer shell (1) and can store electric energy;

the heat conduction assembly is used for conducting heat of the energy storage module (2) to the closed outer shell (1);

the energy storage module (2) is a liquid cooling energy storage module provided with a liquid cooling pipeline, the heat conduction assembly comprises a liquid cooling circulation system, the liquid cooling circulation system comprises a liquid cooling circulation unit (4) and a heat dissipation pipeline (5), and the liquid cooling circulation unit (4) is used for conveying heat of the energy storage module (2) to the heat dissipation pipeline (5); the heat dissipation pipeline (5) is at least partially formed on the closed outer shell (1).

2. The immersed energy storage system of claim 1, wherein a liquid cooling outlet of said liquid cooling circulation unit (4) is in communication with a liquid inlet of said liquid cooling pipeline, a liquid outlet of said liquid cooling pipeline is in communication with a liquid inlet of said heat dissipation pipeline (5), and a liquid outlet of said heat dissipation pipeline (5) is in communication with a liquid cooling inlet of said liquid cooling circulation unit (4).

3. The submerged energy storage system according to claim 1, characterized in that the heat dissipation pipeline (5) on the closed outer shell (1) is a preset heat dissipation pipeline formed on the wall of the closed outer shell (1) by injection molding; or the embedded heat dissipation pipeline is embedded on the inner shell wall of the closed outer shell (1).

4. A submerged energy storage system according to claim 1, characterized in that the heat dissipation pipeline (5) is arranged in the form of a liquid-cooled straight pipe on the wall of the closed outer casing (1); or the shell wall of the closed outer shell (1) is arranged in a liquid-cooling serpentine bent pipe mode.

5. A submerged energy storage system according to claim 1, characterized in that the outer wall of the closed outer casing (1) is further provided with flow disturbing means for accelerating the flow of the water outside the closed outer casing (1).

6. An immersed energy storage system according to claim 1, wherein the closed outer shell (1) comprises a main shell (11) with two open ends, a first closed door body (12) arranged at one open end of the main shell (11) and a second closed door body (13) arranged at the other open end of the main shell (11); the first closed door body (12) and the main shell (11) are of an integrated structure; the second closed door body (13) is detachably connected with the main shell body (11) in a sealing mode.

7. An immersed energy storage system according to claim 6, wherein said liquid cooled circulation assembly (4) is mounted within said enclosed outer housing (1) and disposed adjacent to said first enclosed door body (12).

8. An immersed energy storage system according to claim 6, wherein said heat conduction assembly further comprises a plurality of heat conducting fins (6) arranged on the inner wall of said main housing (11), said heat conducting fins (6) being capable of transferring the heat energy dissipated by said energy storage module (2) to said closed outer housing (1).

9. An immersed energy storage system according to claim 8, wherein the heat conducting fins (6) form a limiting edge towards the energy storage modules (2), the limiting edge being used for limiting the mounting position of the energy storage modules (2).

10. An immersed energy storage system according to claim 9, wherein the heat conducting fins (6) extend axially on the inner peripheral wall surface of the main housing (11) and are uniformly arranged along the circumferential direction, and the limiting edges are circumferentially arranged to enclose the mounting cavity of the energy storage module (2).

11. A submerged energy storage system according to claim 10, characterized in that the energy storage modules (2) are mounted in a drawn manner in the mounting cavity.

12. An immersed energy storage system according to claim 8, wherein the heat conduction assembly further comprises a turbulent fan (7) arranged close to the first closed door body (12), and a gap between two adjacent heat conduction fins (6) forms a ventilation channel of the turbulent fan (7).

13. A submerged energy storage system according to claim 6, characterized in that the second closed door body (13) is provided with a cable connection sealing assembly (13a), and the transmission cable (3) is connected with the energy storage module (2) through the cable connection sealing assembly (13 a).

14. An immersed energy storage system according to claim 1, wherein a fire fighting system is further provided within the closed outer shell (1), the fire fighting system comprising a fire fighting unit (81), a temperature sensitive smoke sensing unit (82) and a monitoring unit (83); wherein the fire fighting unit (81) is used for carrying out fire extinguishing operation on the energy storage module (2); the temperature-sensing smoke sensing unit (82) is used for detecting the temperature and the smoke concentration inside the closed outer shell (1); the monitoring unit (83) is used for visually monitoring the inside of the closed outer shell (1).

15. An immersed energy storage system according to claim 14, wherein the closed outer shell (1) comprises a main shell (11) with two open ends, a first closed door body (12) arranged at one open end of the main shell (11), and a second closed door body (13) arranged at the other open end of the main shell (11), the first closed door body (12) and the main shell (11) are of an integral structure, and the second closed door body (13) and the main shell (11) are detachably and hermetically connected; the fire-fighting unit (81) is arranged on the first closed door body (12), and the temperature-sensitive smoke sensing unit (82) and the monitoring unit (83) are arranged on the inner side of the second closed door body (13).

16. A submerged energy storage system according to claim 1, characterized in that a pressure relief assembly (9) is also provided in the wall of the closed outer casing (1).

17. An immersed energy storage system according to claim 16, wherein said closed outer casing (1) comprises a main casing (11) with two open ends, a first closed door body (12) arranged at one open end of said main casing (11), and a second closed door body (13) arranged at the other open end of said main casing (11), said first closed door body (12) and said main casing (11) are of an integral structure, and said second closed door body (13) and said main casing (11) are detachably and sealingly connected; the pressure relief assembly (9) is arranged on the second closed door body (13).

18. An immersed energy storage system according to claim 1, further comprising a control unit (10) for controlling the energy storage of the energy storage module (2) and the grid access, wherein the control unit (10) is arranged inside the closed outer housing (1) or outside the closed outer housing (1).

19. An immersed energy storage system according to claim 1 wherein the enclosure wall of the closed outer enclosure (1) is further provided with securing means (14); the closed outer shell (1) can be fixed at the water bottom through the fixing device (14), and/or an anchoring assembly is connected with the water body through the fixing device (14) and is fixedly suspended below the liquid level of the water body.

20. A plant comprising a submerged energy storage system, characterized in that the submerged energy storage system is as claimed in any one of claims 1-19.

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