Energy storage container and energy storage system

Abstract

The utility model provides an energy storage container and an energy storage system. The energy storage container comprises a container body, a battery module, an air outlet duct and a plurality of liquid cooling machines, wherein the container body comprises an energy bin and a cooling bin which are stacked; the battery module is placed in the energy bin; the air outlet duct is placed in the cooling bin, one end of the air outlet duct is closed, the other end of the air outlet duct is provided with an air outlet, and the side wall is provided with a plurality of air inlets; and the plurality of liquid cooling machines are placed in the cooling bin, the plurality of liquid cooling machines are respectively connected with the battery modules, the liquid cooling machines are in one-to-one correspondence with the air inlets of the air outlet duct, and a heat dissipation opening of each liquid cooling machine faces one air inlet. According to the embodiment of the invention, the plurality of liquid cooling machines are used for cooling the battery module together, a small liquid cooling machine can be selected, the installation is convenient, the occupied space is small, and a space is reserved for the battery module, so that the overall energy density is provided; and each liquid cooling machine is only connected with part of the battery modules and is independently controlled, so that the number and the length of liquid cooling pipelines are reduced, and the cooling efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of lithium battery equipment, and more specifically, to an energy storage container and an energy storage system. Background Art

[0002] A battery energy storage system is a large battery system used to store electricity and energy. The power storage unit is a battery cluster, which is composed of multiple battery packs. In practical applications, the battery energy storage system is used in power systems as a source of electricity. During the operation of the battery energy storage system, the battery cluster will generate a certain amount of heat. In order to ensure the normal operation of the battery cluster, it is necessary to cool the battery packs of the battery cluster.

[0003] In the prior art, the heat dissipation method of the battery energy storage system is as shown in a battery energy storage system disclosed in CN220382181U. The cooling water tower is located on the side of the battery pack. The battery energy storage system reduces the temperature of the coolant through the cooling water tower, and the cooling water tower reduces the temperature of the coolant through the fan by air cooling. 1. The power of the cooling water tower configured for the current 20-foot energy storage container is 45kW~80kW, the size is large, and it occupies more space in the container; 2. The solution of the external cooling water tower increases the overall size of the container; 3. The cooling water tower is heavy and inconvenient to install; 4. The flattened cooling water tower has a reduced thickness but increased width, which is suitable for the 20-foot 9-cluster and 10-cluster solutions. If you want to increase the number of clusters, you can only increase the size of the container.

[0004] In summary, the existing battery energy storage system has technical problems such as the liquid cooling device is heavy and large, inconvenient to install, and not conducive to controlling the overall size of the container. Utility Model Content

[0005] In view of the shortcomings of the existing methods, the present application proposes an energy storage container and an energy storage system to solve the technical problems in the prior art that the liquid cooling device is heavy and large, inconvenient to install, and not conducive to controlling the overall size of the container.

[0006] In a first aspect, an embodiment of the present application provides an energy storage container, including a box body, a battery module, an air outlet duct, and a plurality of liquid coolers:

[0007] The box body includes a stacked energy compartment and a cooling compartment;

[0008] A battery module is placed in the energy compartment;

[0009] An air outlet duct is placed in the cooling bin, one end of the air outlet duct is closed and the other end has an air outlet, the air outlet is connected to the outside of the box, and a plurality of air inlets are provided on the side wall;

[0010] A plurality of liquid coolers are placed in the cooling bin, and the plurality of liquid coolers are respectively connected to the battery modules. The liquid coolers correspond one-to-one to the air inlets of the air outlet duct, and the heat dissipation port of each of the liquid coolers faces one of the air inlets.

[0011] In some embodiments of the present application, the cooling bin is located above the energy bin, and the liquid cooler is placed on top of the battery module.

[0012] In some embodiments of the present application, the cooling bin is located below the energy bin, and the liquid cooling machine bottom is placed at the bottom of the battery module.

[0013] In some embodiments of the present application, the plurality of liquid coolers are distributed on two opposite sides of the air outlet duct, and the heat dissipation ports of the liquid coolers on the two sides are staggered with each other.

[0014] In some embodiments of the present application, the battery module includes a plurality of battery clusters, the plurality of battery clusters are arranged in an array, and each of the battery clusters includes a plurality of battery packs stacked in sequence.

[0015] In some embodiments of the present application, a liquid cooling pipe is further included, each of the liquid cooling machines corresponds to two of the battery clusters, and the liquid cooling machine is connected to each of the battery packs in the two battery clusters through the liquid cooling pipe.

[0016] In some embodiments of the present application, a partition is further included, wherein the partition is located between the energy bin and the cooling bin, and the partition has a plurality of through holes, and the liquid cooling pipe passes through the through holes.

[0017] In some embodiments of the present application, an exhaust fan is further included, wherein the exhaust fan is located at an air outlet of the air outlet duct, and the air outlet duct is connected to the outside of the box through the exhaust fan.

[0018] In some embodiments of the present application, the box body further includes a fire fighting compartment and a power distribution and confluence compartment, and the fire fighting compartment and the power distribution and confluence compartment are arranged side by side and are both located on the sides of the cooling compartment and the energy compartment away from the exhaust fan.

[0019] In a second aspect, the present application further provides an energy storage system, comprising an energy storage container as described in any embodiment of the first aspect.

[0020] The beneficial technical effects brought about by the technical solution provided in the embodiment of the present application include: the embodiment of the present application adopts multiple liquid coolers to jointly cool the battery modules. The liquid cooler can be a small liquid cooler, which is easy to install and occupies a small space, leaving space for the battery module, thereby providing overall energy density; each liquid cooler is only connected to part of the battery modules, and each liquid cooler is controlled separately, reducing the number and length of liquid cooling pipelines, thereby improving cooling efficiency.

[0021] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of an energy storage container in an embodiment of the present application;

[0024] Figure 2 Schematic diagram of the gas path of an energy storage container in an embodiment of the present application.

[0025] Reference numerals:

[0026] 1- box, 2- battery module, 3- air outlet duct, 4- liquid cooler, 5- exhaust fan;

[0027] 11-energy warehouse, 12-cooling warehouse, 13-firefighting warehouse, 14-power distribution and convergence warehouse;

[0028] 31-air outlet, 32-air inlet. DETAILED DESCRIPTION

[0029] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0030] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "above", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements, and / or components, but does not exclude the implementation of other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by the technical field. It should be understood that when we refer to an element as being "connected" to another element, the element may be directly connected to the other element, or may refer to a connection relationship between the element and the other element established through an intermediate element. In addition, the "connection" used herein may include a wireless connection.

[0031] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that the following implementation methods can refer to, learn from or combine with each other, and the same terms, similar features and similar implementation steps in different implementation methods will not be described repeatedly.

[0032] In view of the shortcomings of the existing methods, the present application proposes an energy storage container and an energy storage system to solve the technical problems in the prior art that the liquid cooling device is heavy and large, inconvenient to install, and not conducive to controlling the overall size of the container.

[0033] In a first aspect, an embodiment of the present application provides an energy storage container, such as Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the structure of an energy storage container in an embodiment of the present application; Figure 2 Schematic diagram of the gas path of an energy storage container in an embodiment of the present application.

[0034] The energy storage container includes a box body 1, a battery module 2, an air outlet duct 3 and a plurality of liquid coolers 4.

[0035] The box body 1 includes a stacked energy bin 11 and a cooling bin 12; a battery module 2 is placed in the energy bin 11; an air outlet duct 3 is placed in the cooling bin 12, one end of the air outlet duct 3 is closed and the other end has an air outlet 31, the air outlet 31 is connected to the outside of the box body 1, and a plurality of air inlets 32 are provided on the side wall; a plurality of liquid coolers 4 are placed in the cooling bin 12, and the plurality of liquid coolers 4 are respectively connected to the battery modules 2, the liquid coolers 4 correspond one-to-one to the air inlets 32 of the air outlet duct 3, and the heat dissipation port of each of the liquid coolers 4 faces one of the air inlets 32.

[0036] The embodiment of the present application adopts multiple liquid coolers 4 to jointly cool the battery module 2. The liquid cooler 4 can be a small liquid cooler 4, which is easy to install and occupies a small space, leaving space for the battery module 2, thereby providing overall energy density; each liquid cooler 4 is only connected to part of the battery module 2, and each liquid cooler 4 is controlled separately, reducing the number and length of liquid cooling pipelines, thereby improving cooling efficiency.

[0037] In some embodiments of the present application, the cooling bin 12 is located above the energy bin 11 , and the liquid cooler 4 is placed on top of the battery module 2 .

[0038] In some embodiments of the present application, the cooling chamber 12 is located below the energy chamber 11 , and the liquid cooler 4 is placed at the bottom of the battery module 2 .

[0039] In this embodiment, the liquid cooler 4 can be placed on the top or bottom in the cooling system of the battery pack. Compared with the side-mounted solution in the prior art, the top or bottom-mounted solution can evenly distribute the coolant on the top or bottom of the battery pack, thereby achieving more uniform heat distribution and temperature control. This helps prevent excessive temperature differences between battery cells and improves the overall performance and life of the battery pack. The side-mounted cooling system may interfere with the internal layout. The top or bottom-mounted solution can make better use of space, especially when space is limited. The top and bottom-mounted solutions can use gravity to help the natural circulation of the coolant, which helps to improve the reliability and efficiency of the cooling system. The side-mounted solution may bring the cooling system closer to the heat source of the battery pack, which may cause the coolant to absorb too much heat before entering the battery pack. The top or bottom-mounted solution can reduce this thermal interference and maintain the cooling efficiency of the coolant. Top or bottom-mounted pipes and connections may be easier to access and maintain because they are usually located on the periphery of the battery pack rather than surrounded by battery cells.

[0040] In some embodiments of the present application, the plurality of liquid coolers 4 are distributed on two opposite sides of the air outlet duct 3 , and the heat dissipation ports of the liquid coolers 4 on the two sides are staggered.

[0041] In some embodiments of the present application, the battery module 2 includes a plurality of battery clusters, the plurality of battery clusters are arranged in an array, and each of the battery clusters includes a plurality of battery packs stacked in sequence.

[0042] In this embodiment, multiple battery clusters are arranged in two rows, and the liquid coolers 4 are located above the battery clusters and are also arranged in two rows accordingly. There is a gap between the two rows of liquid coolers 4, and the gap is used to accommodate the air outlet duct 3. Since the heat dissipation wind directions of the two rows of liquid coolers 4 toward the air outlet duct 3 are opposite, as shown in the figure, the upper liquid cooler 4 blows downward, and the lower liquid cooler 4 blows upward, if the heat dissipation port of the upper liquid cooler 4 is aligned with the heat dissipation port of the lower liquid cooler 4, part of the hot air will be blown back to the heat dissipation port by the opposite airflow before entering the air outlet duct 3, thereby affecting the heat dissipation efficiency of the air outlet duct 3.

[0043] In some embodiments of the present application, a liquid cooling pipe is further included, each of the liquid cooling machines 4 corresponds to two of the battery clusters, and the liquid cooling machine 4 is connected to each of the battery packs in the two battery clusters through the liquid cooling pipe.

[0044] In this embodiment, each liquid cooler 4 corresponds to two battery clusters. As shown in the figure, the three liquid coolers 4 at the bottom respectively control the first and second, third and fourth, fifth and sixth battery clusters at the bottom, and the three liquid coolers 4 at the top also control the first and second, third and fourth, fifth and sixth battery clusters at the top, but the three liquid coolers 4 at the bottom are respectively located on the top of the first, third and fifth columns of battery clusters, and the three liquid coolers 4 at the top are respectively located on the top of the second, fourth and sixth columns of battery clusters, thereby staggering the heat dissipation outlets.

[0045] It is understandable that each liquid cooler 4 may also correspond to one battery cluster or three or more battery clusters.

[0046] In some embodiments of the present application, a partition is further included, wherein the partition is located between the energy bin 11 and the cooling bin 12, and the partition has a plurality of through holes, and the liquid cooling pipe passes through the through holes.

[0047] In some embodiments of the present application, an exhaust fan 5 is further included. The exhaust fan 5 is located at the air outlet 31 of the air outlet duct 3. The air outlet duct 3 is connected to the outside of the box through the exhaust fan 5.

[0048] In some embodiments of the present application, the box body 1 also includes a fire fighting compartment 13 and a power distribution and confluence compartment 14, and the fire fighting compartment 13 and the power distribution and confluence compartment 14 are arranged side by side and are both located on the side of the cooling compartment 12 and the energy compartment 11 away from the exhaust fan 5.

[0049] In a second aspect, the present application further provides an energy storage system, comprising an energy storage container as described in any embodiment of the first aspect.

[0050] Compared with the prior art, the application of the embodiments of the present application can achieve at least the following beneficial effects: the embodiments of the present application adopt multiple liquid coolers 4 to jointly cool the battery module 2. The liquid cooler 4 can be a small liquid cooler 4, which is easy to install and occupies a small space, leaving space for the battery module 2, thereby providing overall energy density; each liquid cooler 4 is only connected to part of the battery modules 2, and each liquid cooler 4 is controlled separately, which reduces the number and length of liquid cooling pipelines, thereby improving cooling efficiency.

[0051] In the description of the present application, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the exemplary directions or positional relationships shown in the accompanying drawings. They are for the convenience of describing or simplifying the description of the embodiments of the present application, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0052] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0053] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0055] Those skilled in the art will appreciate that the various operations, methods, steps, measures, and schemes in the processes discussed in this application may be alternated, altered, combined, or deleted. Further, other steps, measures, and schemes in the various operations, methods, and processes discussed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and schemes in the prior art that are similar to those disclosed in this application may also be alternated, altered, rearranged, decomposed, combined, or deleted.

[0056] The above is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the scheme of the present application, other similar implementation methods based on the technical ideas of the present application are also within the protection scope of the embodiments of the present application.

Claims

1. An energy storage container, characterized in that: include: The box body includes a stacked energy compartment and a cooling compartment; A battery module is placed in the energy compartment; An air outlet duct is placed in the cooling bin, one end of the air outlet duct is closed and the other end has an air outlet, the air outlet is connected to the outside of the box, and a plurality of air inlets are provided on the side wall; A plurality of liquid coolers are placed in the cooling bin, and the plurality of liquid coolers are respectively connected to the battery modules. The liquid coolers correspond one-to-one to the air inlets of the air outlet duct, and the heat dissipation port of each of the liquid coolers faces one of the air inlets.

2. The energy storage container according to claim 1, characterized in that: The cooling chamber is located above the energy chamber, and the liquid cooling machine is placed on top of the battery module.

3. The energy storage container according to claim 1, characterized in that: The cooling chamber is located below the energy chamber, and the liquid cooling machine bottom is placed at the bottom of the battery module.

4. The energy storage container according to claim 1, characterized in that: The plurality of liquid coolers are distributed on two opposite sides of the air outlet duct, and the heat dissipation openings of the liquid coolers on the two sides are staggered with each other.

5. The energy storage container according to claim 1, characterized in that: The battery module includes a plurality of battery clusters arranged in an array, and each of the battery clusters includes a plurality of battery packs stacked in sequence.

6. The energy storage container according to claim 5, characterized in that: It also includes a liquid cooling pipeline, each of the liquid cooling machines corresponds to two of the battery clusters, and the liquid cooling machine is connected to each of the battery packs in the two battery clusters through the liquid cooling pipeline.

7. The energy storage container according to claim 6, characterized in that: It also includes a partition, which is located between the energy bin and the cooling bin. The partition has a plurality of through holes, and the liquid cooling pipe passes through the through holes.

8. The energy storage container according to claim 1, characterized in that: It also includes an exhaust fan, which is located at the air outlet of the air outlet duct, and the air outlet duct is connected to the outside of the box through the exhaust fan.

9. The energy storage container according to claim 8, characterized in that: The box body also includes a fire fighting compartment and a power distribution and confluence compartment, which are arranged side by side and are both located on the sides of the cooling compartment and the energy compartment away from the exhaust fan.

10. An energy storage system, characterized in that: It comprises the energy storage container as claimed in any one of claims 1 to 9.

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