Integrated energy storage container and assembly thereof

Abstract

The utility model discloses an integrated energy storage container and an assembly thereof, and the container comprises a container body which is provided with a first accommodating chamber and a second accommodating chamber which are isolated from each other; the energy storage system comprises a liquid flow system arranged in the first accommodating chamber and various electrical equipment arranged in the second accommodating chamber; the liquid flow system comprises a liquid storage tank, an electric pile, a liquid supply pipe connected with the liquid storage tank and the electric pile, and a circulating pump arranged on the liquid supply pipe; various electrical devices include a process control system connected to the flow system, a battery management system connected to the stack, and a temperature control system.

Description

Technical Field

[0001] This utility model relates to fluid flow energy storage equipment, and more specifically, to an integrated energy storage container and its components. Background Technology

[0002] The integrated design of containerized energy storage systems simplifies infrastructure construction costs, shortens construction cycles, and increases modularity, facilitating transportation and installation. It boasts wide applicability, suitable for thermal, wind, and solar power plants, as well as various applications such as islands, residential communities, schools, research institutions, factories, and large load centers. Furthermore, the modular design allows for independent power and capacity, facilitating maintenance and promoting environmental friendliness.

[0003] Containerized flow systems offer significant advantages in loading and transportation, and are also easy to handle. These characteristics make them a preferred solution for energy storage. However, in reality, existing containerized flow systems suffer from increased costs due to their fragmented design and are inconvenient for transportation, including by sea. First, existing energy storage systems may require longer installation and commissioning times, thus extending the overall project construction cycle. Second, existing energy storage systems may be more difficult to maintain because the various components may be distributed in different locations, requiring more time and resources for inspection and maintenance. Furthermore, existing energy storage systems may lack reliability, making them more prone to failure and performance degradation, especially under extreme weather conditions or in challenging geographical environments. Utility Model Content

[0004] This utility model provides an integrated energy storage container that enables integrated design and reduces connection complexity.

[0005] This utility model embodiment also provides an integrated energy storage container, including:

[0006] The enclosure is equipped with a first containment chamber and a second containment chamber that are isolated from each other;

[0007] The energy storage system includes a liquid flow system located in the first containment chamber and various electrical devices located in the second containment chamber; the liquid flow system includes a liquid storage tank, a fuel cell stack, a liquid supply pipe connecting the liquid storage tank and the fuel cell stack, and a circulation pump located in the liquid supply pipe; the various electrical devices include a process control system and a battery management system connected to the liquid flow system, and a temperature control system.

[0008] In an exemplary embodiment, the liquid storage tank includes a positive electrode liquid storage chamber and a negative electrode liquid storage chamber, which are separated by a partition. The fuel cell stack includes a positive electrode fuel cell stack connected to the positive electrode liquid storage chamber via a liquid supply pipe and a negative electrode fuel cell stack connected to the negative electrode liquid storage chamber via a liquid supply pipe.

[0009] In one exemplary embodiment, the liquid storage tank extends along the length of the housing, and the first receiving chamber is provided with a beam, the liquid storage tank being fixedly connected to the beam.

[0010] In an exemplary embodiment, the integrated energy storage container further includes a first heat exchanger disposed in the positive electrode liquid storage chamber for cooling the positive electrode liquid storage chamber, and a second heat exchanger disposed in the negative electrode liquid storage chamber for cooling the negative electrode liquid storage chamber, wherein the first heat exchanger and the second heat exchanger are both installed and positioned at the top of the container body.

[0011] In an exemplary embodiment, both the first heat exchanger and the second heat exchanger include an outer shell and a plurality of heat exchange tubes housed within the outer shell. The plurality of heat exchange tubes are used to transport coolant, and the outer shell is provided with a plurality of through holes to allow electrolyte to enter the outer shell and exchange heat with the coolant.

[0012] In an exemplary embodiment, the integrated energy storage container further includes a support frame disposed in the first receiving chamber and located on one side of the liquid storage tank, the fuel cell stack is disposed on the upper part of the support frame, the energy storage system further includes a pair of voltage converters respectively connected to the positive electrode stack and the negative electrode stack and used for voltage boosting or bucking, the pair of voltage converters being disposed below the fuel cell stack; the circulation pump is disposed below the fuel cell stack and used for supplying liquid to the fuel cell stack.

[0013] In one exemplary embodiment, the fuel cell stack, voltage converter, and circulating pump, along with the various electrical devices, are respectively located at opposite ends of the housing. Each opposite end of the housing has a door, and each door is equipped with an exhaust fan.

[0014] In one exemplary embodiment, the temperature control system includes a chiller, the battery management system is located above the chiller, and the process control system is located on one side of the chiller.

[0015] In one exemplary embodiment, the inner top wall of the second housing chamber is further provided with a cable tray for storing and protecting the cables connecting the various electrical appliances.

[0016] This application also provides an integrated energy storage container assembly, comprising: multiple integrated energy storage containers as described in any of the above embodiments, stacked and connected along the height direction.

[0017] The integrated energy storage container of this utility model can achieve an integrated design, reduce the complexity of the connection, and by setting a first and a second containment area that are isolated from each other in the container to contain the liquid flow system and electrical equipment respectively, the liquid and electrical areas are separated, which can prevent the solution leakage current from entering the electrical area and causing serious accidents.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.

[0020] Figure 1 This is a front view of the integrated energy storage container according to an embodiment of the present utility model;

[0021] Figure 2 This is an internal view of the integrated energy storage container according to an embodiment of the present invention;

[0022] Figure 3 This is an internal view of the first end of the integrated energy storage container according to an embodiment of the present invention;

[0023] Figure 4 This is a top view of an integrated energy storage container according to an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the heat exchanger of the integrated energy storage container according to an embodiment of the present utility model;

[0025] Figure 6 This is an internal view of the second end of the integrated energy storage container, which is opposite to the first end, according to an embodiment of the present utility model.

[0026] Figure 7 This is a front view of an integrated energy storage container according to an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0028] like Figures 1-7 As shown, this utility model embodiment provides an integrated energy storage container 100 for energy storage, which can achieve standardized integrated design and reduce connection complexity.

[0029] like Figure 1 , Figure 2The integrated energy storage container 100 of this utility model embodiment includes: a container body 1 and an energy storage system 2 disposed within the container body 1. The container body 2 has a first receiving compartment 11 and a second receiving compartment 12 that are isolated from each other. The energy storage system 2 includes a liquid flow system 21 disposed within the first receiving compartment 11 and various electrical devices 22 disposed within the second receiving compartment 12. The liquid flow system 21 includes a liquid storage tank 210, an electric stack 211, a liquid supply pipe 212 connecting the liquid storage tank 210 and the electric stack 211, and a circulation pump 213 disposed within the liquid supply pipe 212.

[0030] like Figure 6 As shown, the various electrical devices 22 include a process control system 221 (PCS) and a battery management system 222 (BMS) connected to the fluid flow system 21, as well as a temperature control system 223. During operation, the power grid transmits commands to the process control system 221, which then transmits signals to the battery management system 222. The battery management system 222 then implements charging and discharging strategies for the process control system 221.

[0031] The integrated energy storage container 100 of this utility model embodiment can realize an integrated design, reduce the complexity of the connection, and by setting a first containment area 11 and a second containment area 12 that are isolated from each other in the container 1 to contain the liquid flow system 21 and the electrical equipment 22 respectively, the liquid and electrical areas are separated, which can avoid the solution leakage current to the electrical area and cause serious accidents.

[0032] like Figure 3 As shown, the storage tank 210 includes a positive electrode storage chamber 2101 and a negative electrode storage chamber 2102, which are separated by a partition 2103. The positive electrode storage chamber 2101 and the negative electrode storage chamber 2102 are used to store the positive electrode electrolyte and the negative electrode electrolyte, respectively. In this embodiment, by separating the storage tank 210 into two storage chambers, the space of the housing 1 can be saved. Correspondingly, the fuel cell stack 211 in this embodiment includes a positive electrode stack 2111 connected to the positive electrode storage chamber 2101 through a supply pipe 212, and a negative electrode stack 2112 connected to the negative electrode storage chamber 2102 through a supply pipe 212.

[0033] like Figure 3 As shown, the liquid storage tank 210 extends along the length of the box 1, and the first receiving chamber 11 is provided with a beam 2104. The liquid storage tank 210 is fixedly connected to the beam 2104, thereby preventing the liquid storage tank 210 from shaking during transportation.

[0034] like Figure 4 , Figure 5As shown, the integrated energy storage container 100 also includes a first heat exchanger 31 disposed in the positive electrode storage chamber 2101 for cooling the positive electrode storage chamber 2101, and a second heat exchanger 32 disposed in the negative electrode storage chamber 2102 for cooling the negative electrode storage chamber 2102. The first heat exchanger 31 and the second heat exchanger 32 are mounted and positioned at the top of the container body 1. Both the first heat exchanger 31 and the second heat exchanger 32 include an outer shell 301 and multiple heat exchange tubes 302 housed within the outer shell 301, which are used to transport coolant. The outer shell 301 is provided with multiple through holes 3010 to allow electrolyte to enter the outer shell 301 and exchange heat with the coolant.

[0035] like Figure 3 As shown, the integrated energy storage container 100 of this embodiment further includes a support frame 4 disposed within the first receiving chamber 11 and located on one side of the liquid storage tank 210. The fuel cell stack 211 is disposed on the upper part of the support frame 4. The energy storage system 21 also includes a pair of voltage converters 2113 and 2114 respectively connected to the positive electrode stack 2111 and the negative electrode stack 2112 for voltage boosting or bucking. The pair of voltage converters 2113 and 2114 are disposed below the fuel cell stack. By setting the support frame 4 to stack the positive electrode stack 2111 and the negative electrode stack 2112, and the voltage converters 2113 and 2114 in the height direction, the space of the first receiving chamber 11 can be effectively saved and utilized.

[0036] like Figure 2 As shown, a circulation pump 213 is located below the fuel cell stack 211 and is used to supply liquid to the fuel cell stack 211. By supplying liquid to the fuel cell stack 211, the circulation pump 213 can discharge gas from the fuel cell stack 211.

[0037] like Figure 6 As shown, the temperature control system 223 includes a chiller, a battery management system 222 located above the chiller, and a process control system 221 located on one side of the chiller. The fuel cell stack 211, voltage converters 2113 and 2114, and circulating pump 213, along with various electrical devices 22, are located at opposite ends of the enclosure 1. Doors 1a and 1b are located at opposite ends of the enclosure 1, and each door 1a or 1b is equipped with exhaust fans 10a and 10b. This layout facilitates the placement, installation, and maintenance of the various devices.

[0038] like Figure 6 As shown, the inner top wall of the second containment chamber 12 is also provided with a cable tray 224 for storing and protecting cables (not shown) that connect to various electrical appliances.

[0039] like Figure 7As shown, this embodiment of the present invention also provides an integrated energy storage container assembly, comprising: multiple integrated energy storage containers 100 stacked and connected along the height direction as described in any of the above embodiments. As shown in the figure, the stacked integrated energy storage containers 100 are fixedly connected by corner fittings 100a.

[0040] The integrated energy storage container 100 of this utility model embodiment is more in line with standardization, has low cost, high efficiency, high safety and reliability, and is relatively easy to maintain and upgrade.

[0041] In the description of this utility model, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "'mouth' structure", etc., 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 this utility model and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0043] Although the embodiments disclosed in this utility model are as described above, the content described is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model, but the patent protection scope of this utility model shall still be defined by the appended claims.

Claims

1. An integrated energy storage container, characterized in that, include: The enclosure is equipped with a first containment chamber and a second containment chamber that are isolated from each other; The energy storage system includes a liquid flow system located in the first containment chamber and various electrical devices located in the second containment chamber; the liquid flow system includes a liquid storage tank, a fuel cell stack, a liquid supply pipe connecting the liquid storage tank and the fuel cell stack, and a circulation pump located in the liquid supply pipe; the various electrical devices include a process control system and a battery management system connected to the liquid flow system, and a temperature control system.

2. The integrated energy storage container according to claim 1, characterized in that: The liquid storage tank includes a positive electrode liquid storage chamber and a negative electrode liquid storage chamber, which are separated by a partition. The fuel cell stack includes a positive electrode fuel cell stack connected to the positive electrode liquid storage chamber via a liquid supply pipe, and a negative electrode fuel cell stack connected to the negative electrode liquid storage chamber via a liquid supply pipe.

3. The integrated energy storage container according to claim 1, characterized in that: The liquid storage tank extends along the length of the box body, and the first receiving chamber is provided with a beam, and the liquid storage tank is fixedly connected to the beam.

4. The integrated energy storage container according to claim 2, characterized in that: It also includes a first heat exchanger disposed in the positive electrode liquid storage chamber for cooling the positive electrode liquid storage chamber, and a second heat exchanger disposed in the negative electrode liquid storage chamber for cooling the negative electrode liquid storage chamber. Both the first heat exchanger and the second heat exchanger are installed and positioned at the top of the housing.

5. The integrated energy storage container according to claim 4, characterized in that: Both the first heat exchanger and the second heat exchanger include an outer shell and multiple heat exchange tubes housed within the outer shell. The multiple heat exchange tubes are used to transport coolant. The outer shell is provided with multiple through holes to allow electrolyte to enter the outer shell and exchange heat with the coolant.

6. The integrated energy storage container according to claim 2, characterized in that: It also includes a support frame disposed in the first containment chamber and located on one side of the liquid storage tank, the fuel cell stack being disposed on the upper part of the support frame, the energy storage system also includes a pair of voltage converters respectively connected to the positive electrode stack and the negative electrode stack and used for boosting or bucking the voltage, the pair of voltage converters being disposed below the fuel cell stack; the circulation pump being disposed below the fuel cell stack and used for supplying liquid to the fuel cell stack.

7. The integrated energy storage container according to claim 6, characterized in that: The fuel cell stack, voltage converter, and circulating pump, along with the various electrical devices, are respectively located at opposite ends of the enclosure. Each opposite end of the enclosure has a door, and each door is equipped with an exhaust fan.

8. The integrated energy storage container according to claim 2, characterized in that: The temperature control system includes a chiller, the battery management system is located above the chiller, and the process control system is located on one side of the chiller.

9. The integrated energy storage container according to claim 2, characterized in that: The inner ceiling wall of the second containment chamber is also equipped with a cable tray for storing and protecting the cables connecting the various electrical appliances.

10. An integrated energy storage container module, characterized in that, include: Multiple integrated energy storage containers as described in any one of claims 1-9, stacked and connected along the height direction.

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