Energy storage system

Abstract

This application relates to an energy storage system, which includes a cooling pipeline assembly and multiple energy storage containers stacked sequentially. The cooling pipeline assembly includes: a main inlet pipe, the inlet of which is connected to the outlet of a liquid cooling mechanism; multiple inlet manifolds, each connected to the main inlet pipe and corresponding to a specific energy storage container, for supplying coolant from the main inlet pipe to the corresponding energy storage container; a main outlet pipe, the outlet of which is connected to the return port of the liquid cooling mechanism; and multiple outlet manifolds, each connected to the main inlet pipe and corresponding to a specific energy storage container, for receiving coolant from the corresponding energy storage container and supplying it to the main outlet pipe. This energy storage system saves energy and has high heat dissipation efficiency.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to energy storage systems. Background Technology

[0002] With the rapid development of renewable energy and smart grids, energy storage technology is playing an increasingly important role in power systems. In energy storage systems, heat dissipation performance directly affects the lifespan of batteries and power devices, as well as system reliability. As a core heat dissipation component, the design optimization of liquid cooling pipelines is crucial.

[0003] Some energy storage systems in related technologies have multiple energy storage containers, which result in high energy consumption and low heat dissipation efficiency. Utility Model Content

[0004] In view of the above problems, this application provides an energy storage system that saves energy and has high heat dissipation efficiency.

[0005] This application provides an energy storage system, which includes a cooling piping assembly and multiple energy storage containers stacked sequentially. The cooling piping assembly includes:

[0006] The main liquid inlet pipe has its inlet port connected to the liquid outlet port of the liquid cooling mechanism.

[0007] Multiple liquid inlet manifolds are connected to the main liquid inlet pipe, and are respectively set to correspond to multiple energy storage containers. The liquid inlet manifolds are used to supply the coolant from the autonomous liquid inlet pipe to the corresponding energy storage container in the future.

[0008] The main liquid outlet pipe, with its outlet port connected to the return port of the liquid cooling mechanism; and

[0009] Multiple liquid outlet manifolds are connected to the main liquid inlet pipe, and are respectively set to multiple energy storage containers. The liquid outlet manifolds are used to receive coolant from the corresponding energy storage container and deliver the coolant to the main liquid outlet pipe.

[0010] The aforementioned energy storage system includes multiple energy storage containers stacked sequentially. Multiple inlet manifolds are connected to a main inlet pipe, and each manifold corresponds to one of the energy storage containers. These manifolds supply coolant from the main inlet pipes to their respective containers, allowing multiple containers to be connected in parallel to a unified main inlet pipe. Similarly, multiple outlet manifolds are connected to the main inlet pipe, and each outlet manifold corresponds to one of the energy storage containers. These manifolds receive coolant from the containers and deliver it to the main outlet pipe, allowing multiple containers to be connected in parallel to a unified main outlet pipe. The inlet of the main inlet pipe is connected to the outlet of the liquid cooling mechanism, and the outlet of the main outlet pipe is connected to the return port of the liquid cooling mechanism. As can be seen, this application stacks multiple energy storage containers and makes the cooling pipeline assembly a centralized liquid cooling pipeline. This centralized liquid cooling pipeline can provide centralized liquid cooling heat dissipation for multiple energy storage containers, thus eliminating the need to configure a separate liquid cooling unit and power supply for each energy storage container, saving energy and achieving high heat dissipation efficiency.

[0011] In one embodiment, the energy storage container is constructed with a plurality of energy storage compartments arranged sequentially along a first direction, and a partition is provided between any two adjacent energy storage compartments; each energy storage compartment is provided with a plurality of electrical boxes arranged sequentially along a second direction, the second direction being the stacking direction of the plurality of energy storage containers, and the first direction intersects with the second direction.

[0012] By constructing multiple energy storage compartments arranged sequentially along a first direction inside the energy storage container, and each energy storage compartment is equipped with multiple electrical boxes arranged sequentially along a second direction, the energy storage container can store more electrical energy through the multiple electrical boxes in the multiple energy storage compartments.

[0013] In one embodiment, the cooling piping assembly further includes multiple branch inlet pipes and multiple branch outlet pipes, with multiple branch inlet pipes connected to each inlet manifold and multiple branch outlet pipes connected to each outlet manifold.

[0014] The multiple branch inlet pipes connected to the inlet manifold are correspondingly set up with multiple energy storage compartments inside the energy storage container corresponding to the inlet manifold; the branch inlet pipes are used to connect to the electrical box inside the corresponding energy storage compartment.

[0015] The multiple branch outlet pipes connected to the outlet manifold are correspondingly set up with multiple energy storage compartments inside the corresponding energy storage container; the branch outlet pipes are used to connect to the electrical box inside the corresponding energy storage compartment.

[0016] In this embodiment, each inlet manifold is connected to multiple branch inlet pipes, and each outlet manifold is connected to multiple branch outlet pipes, which facilitates centralized heat dissipation management of the electrical boxes in the multiple energy storage compartments within the energy storage container.

[0017] In one embodiment, the liquid inlet manifold includes a plurality of liquid inlet pipe segments that are detachably connected in sequence along a first direction. The plurality of liquid inlet pipe segments are correspondingly arranged with a plurality of energy storage compartments in the energy storage container corresponding to the liquid inlet manifold. One end of a branch liquid inlet pipe corresponding to an energy storage compartment is connected to the liquid inlet pipe segment corresponding to the energy storage compartment.

[0018] The liquid outlet manifold includes multiple liquid outlet pipe segments that are detachably connected in sequence along a first direction. The multiple liquid outlet pipe segments are correspondingly set with multiple energy storage compartments in the energy storage container corresponding to the liquid outlet manifold. One end of the branch liquid outlet pipe corresponding to the energy storage compartment is connected to the liquid outlet pipe segment corresponding to the energy storage compartment.

[0019] This embodiment uses a structure where the inlet manifold is connected to multiple inlet pipe segments corresponding to multiple energy storage compartments. This allows for segmented installation or disassembly of the inlet manifold, facilitating its installation, maintenance, or replacement. Similarly, this embodiment also facilitates the installation, maintenance, or replacement of the outlet manifold.

[0020] In one embodiment, the length of the inlet pipe segment along the first direction is adapted to the size of the corresponding energy storage chamber along the first direction, so that any inlet pipe segment can enter the corresponding energy storage chamber.

[0021] The length of the liquid outlet pipe segment along the first direction is adapted to the size of the corresponding energy storage compartment along the first direction, so that any liquid outlet pipe segment can enter the corresponding energy storage compartment.

[0022] In this embodiment, the length of the inlet pipe section along the first direction is adapted to the size of the corresponding energy storage chamber along the first direction, and the length of the outlet pipe section along the first direction is adapted to the size of the corresponding energy storage chamber along the first direction. This makes it convenient for any single inlet pipe section or any single outlet pipe section to be placed into or removed from the corresponding energy storage chamber, thereby facilitating the installation, maintenance or replacement of the inlet pipe section and the outlet pipe section.

[0023] In one embodiment, the inlet manifold is located inside the corresponding energy storage container; the energy storage container has two opposing side walls, and the two ends of the inlet manifold are fixedly connected to the two side walls respectively; one end of the inlet manifold passes through one of the side walls and is connected to the main inlet pipe;

[0024] At least one end of the inlet manifold is provided with a sealing flange, which is sealed and fixedly connected to the side wall seal.

[0025] In this embodiment, a sealing flange is provided at least one end of the liquid inlet manifold. The sealing flange is sealed and fixedly connected to the side wall, thereby ensuring the sealing performance of the connection between the end of the liquid inlet manifold and the corresponding side wall, and fully guaranteeing the sealing performance of the energy storage container at the connection between the liquid inlet manifold and the side wall.

[0026] In one embodiment, a threaded blind hole is provided on the side of the sidewall facing the sealing flange that it fits with, and a connecting hole corresponding to the threaded blind hole is provided on the sealing flange, so that the bolt can pass through the connecting hole and engage with the threaded blind hole.

[0027] This embodiment improves the sealing performance of the energy storage container by creating threaded blind holes in the side wall and fixing them to the sealing flange through the threaded blind holes and bolts. This eliminates the need to create through holes in the side wall of the energy storage container.

[0028] In one embodiment, a sealing flange is provided at each end of the inlet manifold, and the two sealing flanges are respectively sealed and fixedly connected to the two side walls.

[0029] In this embodiment, a sealing flange is provided at each end of the liquid inlet manifold, and the two sealing flanges are respectively sealed and fixedly connected to the two side walls, thereby fully ensuring the sealing performance of the connection between the energy storage container and the two ends of the liquid inlet manifold.

[0030] In one embodiment, the inlet manifold includes a first main section, a shaped section, and a second main section, with both ends of the shaped section connected to one end of the first main section and one end of the second main section, respectively; the stiffness of the shaped section is less than the stiffness of the first main section and the stiffness of the second main section.

[0031] The two sealing flanges are respectively located at the ends of the first and second main body sections that are far apart from each other.

[0032] The low stiffness (relatively strong deformability) of the irregular section allows for fine-tuning of the length of the inlet manifold during installation. This means that the positions of the two sealing flanges and the distance between them can be fine-tuned, thereby compensating for machining and installation errors of the inlet manifold, as well as installation and machining errors between the two side walls. This ensures that the two sealing flanges can fit tightly against their respective side walls, thus fully guaranteeing the airtightness of the energy storage container.

[0033] In one embodiment, the main inlet pipe and the main outlet pipe both extend along a second direction, which is the stacking direction of the multiple energy storage containers.

[0034] The inlet manifold and outlet manifold both extend along the first direction, which intersects with the second direction; the main outlet manifold is located on the side of the outlet manifold away from the main inlet manifold; the inlet manifold and outlet manifold corresponding to the same energy storage container are arranged at intervals along the second direction.

[0035] In this embodiment, the arrangement of the main liquid outlet pipe, liquid outlet manifold, main liquid inlet pipe, and liquid inlet manifold results in a compact and reasonable arrangement of the cooling pipeline components, which facilitates connection with multiple energy storage containers.

[0036] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0037] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0038] Figure 1 This is a schematic diagram of the structure of an energy storage system according to some embodiments of this application.

[0039] Figure 2 This is a schematic diagram of the structure of a cooling pipe assembly according to some embodiments of this application.

[0040] Figure 3 This is a schematic diagram showing the connection relationship of the inlet manifold, outlet manifold, branch inlet manifold, and branch outlet manifold of an energy storage container according to some embodiments of this application.

[0041] Figure 4 This is a schematic diagram of the structure of an energy storage container according to some embodiments of this application.

[0042] Figure 5 This is a schematic diagram showing the connection relationship between the second sealing flange and the second sidewall according to an embodiment of this application.

[0043] The reference numerals in the detailed embodiments are as follows:

[0044] 100. Cooling piping assembly; 110. Main inlet pipe; 120. Inlet manifold; 120a. Inlet pipe section; 120b. Inlet transition section; 121. First main body section; 122. Irregular section; 123. Second main body section; 130. Main outlet pipe; 140. Outlet manifold; 140a. Outlet pipe section; 140b. Outlet transition section; 150. Sealing flange; 151. First sealing flange; 152. Second sealing flange; 160. Branch inlet pipe; 170. Branch outlet pipe;

[0045] 200. Energy storage container; 210. First side wall; 220. Second side wall; 201. Energy storage compartment; 230. Partition plate;

[0046] 300. Connector. Detailed Implementation

[0047] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0049] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0050] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0051] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0052] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0053] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0054] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0055] As mentioned in the background section, some energy storage systems in related technologies have multiple energy storage containers, resulting in high energy consumption and low heat dissipation efficiency. This is because each energy storage container in such systems is independently equipped with a liquid cooling system, specifically through a built-in liquid cooling unit and associated power supply for heat dissipation. However, the separate configuration of the liquid cooling unit and power supply for each container leads to high energy consumption and low heat dissipation efficiency.

[0056] Based on the above problems, this application provides an energy storage system in which multiple energy storage containers 200 are stacked and the cooling pipeline assembly 100 is a centralized liquid cooling pipeline. The centralized liquid cooling pipeline provides centralized liquid cooling heat dissipation for multiple energy storage containers 200, thereby eliminating the need to configure a separate liquid cooling unit and power supply for each energy storage container 200, saving energy consumption and achieving high heat dissipation efficiency.

[0057] Figure 1 This is a schematic diagram of the structure of an energy storage system according to some embodiments of this application. Figure 2 This is a schematic diagram of the cooling pipe assembly according to some embodiments of this application. Please refer to... Figure 1 and Figure 2 This application provides an energy storage system, which includes a cooling pipe assembly 100 and a plurality of energy storage containers 200 stacked in sequence. The cooling pipe assembly 100 includes a main liquid inlet pipe 110, a plurality of liquid inlet manifolds 120, a main liquid outlet pipe 130, and a plurality of liquid outlet manifolds 140.

[0058] The inlet of the main inlet pipe 110 is connected to the outlet of the liquid cooling mechanism. The outlet of the main outlet pipe 130 is connected to the return port of the liquid cooling mechanism. Multiple inlet manifolds 120 are connected to the main inlet pipe 110 and are respectively associated with multiple energy storage containers 200. The inlet manifolds 120 are used to supply coolant from the main inlet pipe 110 to the corresponding energy storage container 200. Multiple outlet manifolds 140 are connected to the main inlet pipe 110 and are respectively associated with multiple energy storage containers 200. The outlet manifolds 140 are used to receive coolant from the corresponding energy storage container 200 and transport the coolant to the main outlet pipe 130.

[0059] Specifically, multiple inlet manifolds 120 and multiple energy storage containers 200 can be in one-to-one correspondence, and multiple outlet manifolds 140 and multiple energy storage containers 200 can also be in one-to-one correspondence. Adjacent energy storage containers 200 can be connected by a connecting seat 300. Adjacent energy storage containers 200 can also be stacked on top of each other.

[0060] The cooling piping assembly 100 is connected to the liquid outlet of the liquid cooling mechanism via the inlet of the main inlet pipe 110, and the outlet of the main outlet pipe 130 is connected to the return port of the liquid cooling mechanism, thus forming a cooling circulation loop. The liquid cooling mechanism supplies cryogenic coolant to the main inlet pipe 110 through its outlet, allowing the cryogenic coolant to be distributed to multiple inlet manifolds 120. Each inlet manifold 120 supplies the cryogenic coolant from the main inlet pipe 110 to its corresponding energy storage container 200. After flowing through each energy storage container 200, the cryogenic coolant carries away the heat generated by the electrical box inside the container, causing its temperature to rise. The heated coolant then flows from each energy storage container 200 into its corresponding outlet manifold 140. Multiple outlet manifolds 140 deliver the heated coolant to the main outlet pipe 130, allowing the heated coolant to flow back through the outlet of the main outlet pipe 130 to the return port of the liquid cooling mechanism, where it is cooled again and can then participate in the cooling cycle once more. The specific structure and working principle of the liquid cooling mechanism can be found in existing technology and will not be elaborated further.

[0061] The aforementioned energy storage system includes multiple energy storage containers 200 stacked sequentially. Multiple inlet manifolds 120 are connected to a main inlet pipe 110, and each inlet manifold 120 corresponds to one of the energy storage containers 200. The inlet manifolds 120 supply coolant from the main inlet pipe 110 to the corresponding energy storage container 200, thus allowing multiple energy storage containers 200 to be connected in parallel to a unified main inlet pipe 110 via the multiple inlet manifolds 120. Similarly, multiple outlet manifolds 140 are connected to the main inlet pipe 110, and each outlet manifold 140 corresponds to one of the energy storage containers 200. The outlet manifolds 140 receive coolant from the corresponding energy storage container 200 and transport the coolant to a main outlet pipe 130, thus allowing multiple energy storage containers 200 to be connected in parallel to a unified main outlet pipe 130 via the multiple outlet manifolds 140. The inlet of the main liquid inlet pipe 110 is connected to the outlet of the liquid cooling mechanism, and the outlet of the main liquid outlet pipe 130 is connected to the return port of the liquid cooling mechanism. Therefore, this application stacks multiple energy storage containers 200, making the cooling piping assembly 100 a centralized liquid cooling system. This centralized liquid cooling system can provide centralized liquid cooling for multiple energy storage containers 200, eliminating the need for separate liquid cooling units and power supplies for each container, thus saving energy and achieving high heat dissipation efficiency.

[0062] Moreover, by using this centralized liquid cooling pipeline to provide centralized liquid cooling for multiple energy storage containers 200, the conductivity of the coolant flowing through each energy storage container 200 can be made consistent.

[0063] In one embodiment, the energy storage container 200 is filled with flame-retardant gas. By filling the energy storage container 200 with flame-retardant gas, this embodiment can eliminate the conditions that support combustion and explosion, effectively suppress fires and explosions caused by thermal runaway of the electrical box inside the energy storage container 200, and prevent the accident from spreading.

[0064] In one embodiment, the energy storage container 200 is under positive pressure. That is, the internal air pressure of the energy storage container 200 is relatively high, while the external air pressure is relatively low. This actively prevents the infiltration of oxygen-containing air from outside the energy storage container 200, thereby ensuring that the oxygen concentration inside the energy storage container 200 is at a low, safe level or is oxygen-free. This further enhances the safety of the energy storage container 200.

[0065] Understandably, the connection between the inlet manifold 120 and the corresponding energy storage container 200 is a sealed connection, and the connection between the outlet manifold 140 and the corresponding energy storage container 200 is a sealed connection, thereby ensuring the sealing of the inside of the energy storage container 200 to prevent the leakage of flame-retardant gas.

[0066] Please refer to Figure 4In one embodiment, the energy storage container 200 is constructed with a plurality of energy storage compartments 201 arranged sequentially along a first direction XX', and a partition plate 230 is provided between any two adjacent energy storage compartments 201. Each energy storage compartment 201 is provided with a plurality of electrical boxes (not shown) arranged sequentially along a second direction ZZ', where the second direction ZZ' is the stacking direction of the plurality of energy storage containers 200, and the first direction XX' intersects with the second direction ZZ'.

[0067] By constructing multiple energy storage compartments 201 arranged sequentially along the first direction XX' inside the energy storage container 200, and each energy storage compartment 201 is equipped with multiple electrical boxes arranged sequentially along the second direction ZZ', the energy storage container 200 can store more electrical energy through the multiple electrical boxes in the multiple energy storage compartments 201.

[0068] Optionally, each energy storage compartment 201 is filled with flame-retardant gas to suppress fires and explosions caused by thermal runaway of the electrical box inside the energy storage compartment 201.

[0069] Please combine Figure 2 and Figure 3 In one embodiment, the cooling piping assembly 100 further includes a plurality of branch inlet pipes 160 and a plurality of branch outlet pipes 170, with a plurality of branch inlet pipes 160 connected to each inlet manifold 120 and a plurality of branch outlet pipes 170 connected to each outlet manifold 140.

[0070] The multiple branch inlet pipes 160 connected to the inlet manifold 120 are correspondingly configured with multiple energy storage compartments 201 within the energy storage container 200 corresponding to the inlet manifold 120. The branch inlet pipes 160 are used to connect to the electrical boxes within the corresponding energy storage compartments 201.

[0071] The multiple branch outlet pipes 170 connected to the outlet manifold 140 are correspondingly configured with multiple energy storage compartments 201 within the energy storage container 200 corresponding to the outlet manifold 140. The branch outlet pipes 170 are used to connect to the electrical boxes within the corresponding energy storage compartments 201.

[0072] Specifically, the multiple branch inlet pipes 160 connected to the inlet manifold 120 can correspond one-to-one with the multiple energy storage compartments 201 within the energy storage container 200 corresponding to the inlet manifold 120. Similarly, the multiple branch outlet pipes 170 connected to the outlet manifold 140 can correspond one-to-one with the multiple energy storage compartments 201 within the energy storage container 200 corresponding to the outlet manifold 140. Each branch inlet pipe 160 is connected to the inlet of the electrical box within its corresponding energy storage compartment 201. Each branch outlet pipe 170 is connected to the outlet of the electrical box within its corresponding energy storage compartment 201.

[0073] After the cryogenic coolant from the inlet manifold 120 is distributed to multiple branch inlet pipes 160, it can then be distributed to the electrical boxes within multiple energy storage chambers 201. As the cryogenic coolant flows through the electrical boxes in the energy storage chambers 201, it carries away the heat generated by the boxes, causing their temperature to rise. The heated coolant then flows through the electrical boxes into the corresponding branch outlet pipes 170. The multiple branch outlet pipes 170 then deliver the heated coolant to the outlet manifold 140, thereby enabling individual cooling and heat dissipation for the electrical boxes within the multiple energy storage chambers 201.

[0074] In this embodiment, each inlet manifold 120 is connected to multiple branch inlet pipes 160, and each outlet manifold 140 is connected to multiple branch outlet pipes 170, which facilitates centralized heat dissipation management of the electrical boxes in the multiple energy storage compartments 201 within the energy storage container 200.

[0075] Please combine Figure 3 and Figure 4 In some embodiments, the extension direction of the branch inlet pipe 160 and the extension direction of the branch outlet pipe 170 are both along the second direction ZZ'. The extension directions of the inlet manifold 120 and the outlet manifold 140 are both along the first direction XX'.

[0076] Combination Figure 3 and Figure 4 In some embodiments, the inlet manifold 120 includes a plurality of inlet pipe segments 120a that are detachably connected in sequence along the first direction XX'. The plurality of inlet pipe segments 120a are correspondingly arranged with a plurality of energy storage compartments 201 in the energy storage container 200 corresponding to the inlet manifold 120. One end of the branch inlet pipe 160 corresponding to the energy storage compartment 201 is connected to the inlet pipe segment 120a corresponding to the energy storage compartment 201.

[0077] The liquid outlet manifold 140 includes multiple liquid outlet pipe segments 140a that are detachably connected in sequence along the first direction XX'. The multiple liquid outlet pipe segments 140a are correspondingly arranged with multiple energy storage compartments 201 in the energy storage container 200 corresponding to the liquid outlet manifold 140. One end of the branch liquid outlet pipe 170 corresponding to the energy storage compartment 201 is connected to the liquid outlet pipe segment 140a corresponding to the energy storage compartment 201.

[0078] Specifically, the multiple inlet pipe sections 120a of the inlet manifold 120 are configured one-to-one with the multiple energy storage compartments 201 within the corresponding energy storage container 200. Any two adjacent inlet pipe sections 120a can be connected via an inlet transition section 120b. Similarly, the multiple outlet pipe sections 140a of the outlet manifold 140 are configured one-to-one with the multiple energy storage compartments 201 within the corresponding energy storage container 200. Any two adjacent outlet pipe sections 140a can be connected via an outlet transition section 140b.

[0079] This embodiment configures the inlet manifold 120 as a structure connected to multiple inlet pipe segments 120a corresponding to multiple energy storage chambers 201. This allows for segmented installation or disassembly of the inlet manifold 120, facilitating its installation, maintenance, or replacement. Similarly, this embodiment facilitates the installation, maintenance, or replacement of the outlet manifold 140.

[0080] In one embodiment, the branch inlet pipe 160 and inlet pipe segment 120a corresponding to the same energy storage compartment 201 are connected into a single structure by welding, thereby facilitating joint installation and disassembly. The branch outlet pipe 170 and outlet pipe segment 140a corresponding to the same energy storage compartment 201 are connected into a single structure by welding, thereby facilitating joint installation and disassembly.

[0081] Combination Figure 3 and Figure 4 In some embodiments, the length of the inlet pipe segment 120a along the first direction XX' is adapted to the size of the corresponding energy storage chamber 201 along the first direction XX', so that any inlet pipe segment 120a can enter the corresponding energy storage chamber 201. The length of the outlet pipe segment 140a along the first direction XX' is adapted to the size of the corresponding energy storage chamber 201 along the first direction XX', so that any outlet pipe segment 140a can enter the corresponding energy storage chamber 201.

[0082] Specifically, the length of the inlet pipe section 120a along the first direction XX' can be slightly smaller than the dimension of the energy storage chamber 201 along the first direction XX'. During actual assembly, the inlet pipe section 120a can be moved along the third direction YY' to enter the corresponding energy storage chamber 201. The third direction YY' intersects the first direction XX' and the second direction ZZ'. Optionally, these three directions are mutually perpendicular.

[0083] Combination Figure 3 and Figure 4Taking the installation of inlet pipe segments 120a sequentially from right to left along the first direction XX' as an example, first, the rightmost inlet pipe segment 120a is placed into the corresponding energy storage chamber 201, and its right end is connected to the main inlet pipe through the first side wall 210. Then, the other inlet pipe segments 120a are installed sequentially from right to left. The process of installing the other inlet pipe segments 120a sequentially from right to left is as follows: first, the current inlet pipe segment 120a is placed into the energy storage chamber 201, and then the inlet pipe segment 120a is connected to the adjacent inlet pipe segment 120a on its right. Specifically, after placing one inlet pipe segment 120a into the energy storage chamber 201, the right end of the current inlet pipe segment 120a can be passed through the partition plate 230 on its right side along the first direction XX' and extend into the energy storage chamber 201 on its right side. The right end of the current inlet pipe segment 120a can then be connected to the inlet pipe segment 120a on its right side via the inlet transition section 230b. The process of sequentially installing multiple outlet pipe segments 140a along the first direction XX' is similar to the process of installing multiple inlet pipe segments 120a, and can be referred to the above description; it will not be repeated here.

[0084] In this embodiment, the length of the inlet pipe section 120a along the first direction XX' is adapted to the size of the corresponding energy storage chamber 201 along the first direction XX', and the length of the outlet pipe section 140a along the first direction XX' is adapted to the size of the corresponding energy storage chamber 201 along the first direction XX'. This allows for easy insertion or removal of any single inlet pipe section 120a or outlet pipe section 140a into or out of the corresponding energy storage chamber 201, thereby facilitating the installation, maintenance, or replacement of the inlet pipe section 120a and outlet pipe section 140a.

[0085] Figure 3 This is a schematic diagram showing the connection relationship of the inlet manifold, outlet manifold, branch inlet manifold, and branch outlet manifold of an energy storage container according to some embodiments of this application. Figure 4 This is a structural schematic diagram of an energy storage container according to some embodiments of this application. Please refer to... Figure 3 and Figure 4 In some embodiments, the inlet manifold 120 is located inside the corresponding energy storage container 200. The energy storage container 200 has two opposing side walls, and both ends of the inlet manifold 120 are fixedly connected to the two side walls respectively. One end of the inlet manifold 120 passes through one of the side walls and is connected to the main inlet pipe 110. At least one end of the inlet manifold 120 is provided with a sealing flange 150, which is sealed and fixedly connected to the side wall.

[0086] Specifically, the two side walls of the energy storage container 200 are arranged opposite each other along the first direction XX'. These two side walls are defined as the first side wall 210 and the second side wall 220. Since the liquid inlet manifold 120 is located inside the corresponding energy storage container 200, in order to fix the liquid inlet manifold 120 to the energy storage container 200, both ends of the liquid inlet manifold 120 need to be fixedly connected to the two side walls respectively. Furthermore, combined with... Figure 1 It is understood that a first hole is provided on the first side wall 210, and one end of the liquid inlet manifold 120 passes through the first hole on the first side wall 210, so that it can be connected to the main liquid inlet pipe 110.

[0087] Specifically, the sealing flange 150 can be fixed to the corresponding sidewall by means of bolts or other methods. One end of the inlet manifold 120 with the sealing flange 150 passes through the corresponding sidewall. By sealing and fixing the sealing flange 150 to the corresponding sidewall, the end of the inlet manifold 120 with the sealing flange 150 can be fixed to the corresponding sidewall. Furthermore, the sealing fit between the sealing flange 150 and the corresponding sidewall ensures the airtightness of the connection between the inlet manifold 120 and the corresponding sidewall.

[0088] In this embodiment, a sealing flange 150 is provided at least one end of the liquid inlet manifold 120. The sealing flange 150 is sealed and fixedly connected to the side wall, thereby ensuring the sealing performance of the connection between the end of the liquid inlet manifold 120 and the corresponding side wall, and fully ensuring the sealing performance of the energy storage container 200 at the connection between the liquid inlet manifold 120 and the side wall.

[0089] Understandably, since the energy storage container 200 has a sealed connection with the liquid inlet manifold 120, it is able to prevent the flame-retardant gas from leaking from the connection.

[0090] Please refer to Figure 1 , Figure 3 and Figure 4 In some embodiments, a sealing flange 150 is provided at each end of the inlet manifold 120, and the two sealing flanges 150 are respectively sealed and fixedly connected to the two side walls.

[0091] Specifically, the two sealing flanges 150 are a first sealing flange 151 and a second sealing flange 152. The first sealing flange 151 is sealed and fixedly connected to the first sidewall 210. The second sealing flange 152 is sealed and fixedly connected to the first sidewall 210. The first sealing flange 151 can be located on the side of the first sidewall 210 facing the second sidewall 220, or on the side of the first sidewall 210 away from the second sidewall 220. The second sealing flange 152 can be located on the side of the second sidewall 220 facing the first sidewall 210, or the first sealing flange 151 can be located on the side of the second sidewall 220 away from the first sidewall 210.

[0092] Alternatively, a first sealing flange 151 may be provided only at one end of the inlet manifold 120, without providing a second sealing flange 152; or, a second sealing flange 152 may be provided only at one end of the inlet manifold 120, without providing a first sealing flange 151.

[0093] In this embodiment, a sealing flange 150 is provided at each end of the liquid inlet manifold 120. The two sealing flanges 150 are respectively sealed and fixedly connected to the two side walls, thereby fully ensuring the sealing performance of the connection between the energy storage container 200 and the two ends of the liquid inlet manifold 120.

[0094] In one embodiment, a threaded blind hole is provided on the side of the sidewall facing the sealing flange 150 that is in contact with it, and a connecting hole corresponding to the threaded blind hole is provided on the sealing flange 150, and a bolt can pass through the connecting hole and engage with the threaded blind hole.

[0095] Please refer to the details. Figure 5 , Figure 5 This is a schematic diagram illustrating the connection relationship between the second sealing flange and the second sidewall according to an embodiment of this application. Taking the connection between the second sealing flange 152 and the second sidewall 220 as an example, the sidewall 220 facing the second sealing flange 152 is provided with a threaded blind hole. After the bolt passes through the connection hole on the second sealing flange 152, it can be tightened into the threaded blind hole on the second sidewall 220, thereby fixing the second sealing flange 152 and the second sidewall 220 together.

[0096] Similarly, if one end of the inlet manifold 120 is provided with a first sealing flange 151, the structure of the connection between the first sealing flange 151 and the first side wall 210 (not shown in the figure) is as follows: the side of the first side wall 210 facing the first sealing flange 151 is provided with a threaded blind hole. After the bolt passes through the connection hole on the first sealing flange 151, it can be tightened with the threaded blind hole on the first side wall 210, thereby making the first sealing flange 151 and the first side wall 210 fixedly connected.

[0097] This embodiment improves the sealing performance of the energy storage container 200 by creating threaded blind holes on the side wall of the energy storage container 200 and fixing it to the sealing flange through the threaded blind holes and bolts. This eliminates the need to create through holes in the side wall of the energy storage container 200.

[0098] Please combine Figure 3 and Figure 4In some embodiments, the inlet manifold 120 includes a first main section 121, a shaped section 122, and a second main section 123. The two ends of the shaped section 122 are respectively connected to one end of the first main section 121 and one end of the second main section 123. Two sealing flanges 150 are respectively located at the ends of the first main section 121 and the second main section 123 that are far apart from each other. The stiffness of the shaped section 122 is less than the stiffness of the first main section 121 and the stiffness of the second main section 123.

[0099] Specifically, in this embodiment, of the two sealing flanges 150 located at both ends of the inlet manifold 120, the first sealing flange 151 is located at the end of the first main body section 121 away from the second main body section 123, and the second sealing flange 152 is located at the end of the second main body section 123 away from the first main body section 121. In actual use, the first main body section 121 and the second main body section 123 can be made of stainless steel, and the irregular section 122 can be made of plastic or the like.

[0100] The irregular section 122 has lower rigidity and stronger deformability than the first main section 121 and the second main section 123. Therefore, by setting the irregular section 122 between the first main section 121 and the second main section 123, the characteristic of the irregular section 122 having lower rigidity (relatively stronger deformability) allows for fine-tuning of the length of the inlet manifold 120 during installation, that is, it allows for fine-tuning of the position of the two sealing flanges 150 and the distance between them. This can compensate for the processing and installation errors of the inlet manifold 120, as well as the installation and processing errors between the two side walls, ensuring that the two sealing flanges 150 can fit tightly against their respective side walls, thereby fully guaranteeing the sealing performance of the energy storage container 200.

[0101] like Figure 4 As shown, in one embodiment, the irregular segment 122 is shaped as a concave structure in the third direction YY'. The third direction YY' intersects with the first direction XX' and the second direction ZZ'. Optionally, these three directions are perpendicular to each other. In this way, the length of the irregular segment 122 can be extended as much as possible, thereby giving the irregular segment 122 a larger deformation space, which can better compensate for the various errors mentioned above, and further ensure that the two sealing flanges 150 can fit tightly against the corresponding sidewalls respectively.

[0102] Please refer to Figure 2In some embodiments, the main inlet pipe 110 and the main outlet pipe 130 extend along the second direction ZZ', which is the stacking direction of the multiple energy storage containers 200. The inlet manifold 120 and the outlet manifold 140 extend along the first direction XX', which intersects with the second direction ZZ'. The main outlet pipe 130 is located on the side of the outlet manifold 140 away from the main inlet pipe 110. The inlet manifold 120 and the outlet manifold 140 corresponding to the same energy storage container 200 are arranged at intervals along the second direction ZZ'.

[0103] Optionally, the first direction XX' is perpendicular to the second direction ZZ'. In actual use, the second direction ZZ' of the energy storage system can be vertical, and the first direction XX' can be horizontal.

[0104] Since multiple energy storage containers 200 are stacked along the second direction ZZ', the corresponding multiple inlet manifolds 120 are arranged at intervals along the second direction ZZ', and the corresponding multiple outlet manifolds 140 are arranged at intervals along the second direction ZZ'.

[0105] The main outlet pipe 130 is located on the side of the outlet manifold 140 away from the main inlet pipe 110. The main inlet pipe 110 is located on the side of the inlet manifold 120 away from the main outlet pipe 130. Thus, the inlet manifold 120 and the outlet manifold 140 are located between the main inlet pipe 110 and the main outlet pipe 130 along the first direction XX'.

[0106] The inlet manifold 120 and outlet manifold 140 corresponding to the same energy storage container 200 are arranged at intervals along the second direction ZZ', specifically in... Figure 2 In the embodiment shown, the inlet manifold 120 corresponding to the same energy storage container 200 is located below the outlet manifold 140 along the second direction ZZ'.

[0107] In this embodiment, the arrangement of the main liquid outlet pipe 130, the liquid outlet manifold 140, the main liquid inlet pipe 110, and the liquid inlet manifold 120 results in a compact and reasonable arrangement of the cooling pipe assembly 100, which facilitates connection with multiple energy storage containers 200.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage system, characterized by, The energy storage system includes a cooling piping assembly and multiple energy storage containers stacked sequentially. The cooling piping assembly includes: The main liquid inlet pipe has its inlet connected to the liquid outlet of the liquid cooling mechanism. Multiple inlet manifolds are provided, each of which is connected to the main inlet pipe and is correspondingly provided to the multiple energy storage containers. The inlet manifolds are used to supply coolant from the main inlet pipe to the corresponding energy storage container. A main liquid outlet pipe, the outlet of which is connected to the return port of the liquid cooling mechanism; and Multiple liquid outlet manifolds are provided, each connected to the main liquid inlet pipe and corresponding to one of the multiple energy storage containers. The liquid outlet manifolds are used to receive coolant from the corresponding energy storage container and deliver the coolant to the main liquid outlet pipe.

2. The energy storage system of claim 1, wherein, The energy storage container is constructed with multiple energy storage compartments arranged sequentially along a first direction, and a partition is provided between any two adjacent energy storage compartments; each energy storage compartment is provided with multiple electrical boxes arranged sequentially along a second direction, the second direction being the stacking direction of the multiple energy storage containers, and the first direction intersects with the second direction.

3. The energy storage system of claim 2, wherein, The cooling piping assembly further includes multiple branch inlet pipes and multiple branch outlet pipes, with multiple branch inlet pipes connected to each inlet manifold and multiple branch outlet pipes connected to each outlet manifold; The multiple branch inlet pipes connected to the inlet manifold are correspondingly arranged with the multiple energy storage compartments inside the energy storage container corresponding to the inlet manifold; the branch inlet pipes are used to connect with the electrical box inside the corresponding energy storage compartment; The multiple branch outlet pipes connected to the outlet manifold are correspondingly arranged with the multiple energy storage compartments inside the energy storage container corresponding to the outlet manifold; the branch outlet pipes are used to communicate with the electrical box inside the corresponding energy storage compartment.

4. The energy storage system of claim 3, wherein, The liquid inlet manifold includes a plurality of liquid inlet pipe segments that are detachably connected in sequence along the first direction. The plurality of liquid inlet pipe segments are correspondingly arranged with a plurality of energy storage compartments in the energy storage container corresponding to the liquid inlet manifold. One end of the branch liquid inlet pipe corresponding to the energy storage compartment is connected to the liquid inlet pipe segment corresponding to the energy storage compartment. The liquid outlet manifold includes a plurality of liquid outlet pipe segments that are detachably connected in sequence along the first direction. The plurality of liquid outlet pipe segments are correspondingly arranged with a plurality of energy storage compartments in the energy storage container corresponding to the liquid outlet manifold. One end of the branch liquid outlet pipe corresponding to the energy storage compartment is connected to the liquid outlet pipe segment corresponding to the energy storage compartment.

5. The energy storage system of claim 4, wherein, The length of the inlet pipe segment along the first direction is adapted to the size of the corresponding energy storage chamber along the first direction, so that any of the inlet pipe segments can enter the corresponding energy storage chamber. The length of the outlet pipe segment along the first direction is adapted to the size of the corresponding energy storage compartment along the first direction, so that any outlet pipe segment can enter the corresponding energy storage compartment.

6. The energy storage system of claim 1, wherein, The inlet manifold is located inside the corresponding energy storage container; the energy storage container has two opposing side walls, and the two ends of the inlet manifold are respectively fixedly connected to the two side walls; one end of the inlet manifold passes through one of the side walls and is connected to the main inlet pipe; At least one end of the inlet manifold is provided with a sealing flange, and the sealing flange is sealed and fixedly connected to the side wall.

7. The energy storage system of claim 6, wherein, The sidewall facing the sealing flange that is in contact with it has a threaded blind hole, and the sealing flange has a connecting hole corresponding to the threaded blind hole, through which a bolt can pass and engage with the threaded blind hole.

8. The energy storage system of claim 6, wherein, The inlet manifold is provided with a sealing flange at each end, and the two sealing flanges are respectively sealed and fixedly connected to the two side walls.

9. The energy storage system of claim 8, wherein, The inlet manifold includes a first main section, an irregular section, and a second main section. The two ends of the irregular section are respectively connected to one end of the first main section and one end of the second main section. The stiffness of the irregular section is less than the stiffness of the first main section and the stiffness of the second main section. The two sealing flanges are respectively located at the ends of the first main body section and the second main body section that are far apart from each other.

10. The energy storage system of claim 1, wherein, The energy storage container is filled with flame-retardant gas, and / or the energy storage container is in a positive pressure environment.

11. The energy storage system of claim 1, wherein, The main inlet pipe and the main outlet pipe both extend along the second direction, which is the stacking direction of the plurality of energy storage containers. The inlet manifold and the outlet manifold both extend along a first direction, which intersects with the second direction; the main outlet manifold is located on the side of the outlet manifold away from the main inlet manifold; the inlet manifold and the outlet manifold corresponding to the same energy storage container are arranged at intervals along the second direction.

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