Liquid cooling pipeline of energy storage system and installation method

Abstract

The invention provides a liquid cooling pipeline of an energy storage system and an installation method. The liquid cooling pipeline of the energy storage system comprises a first-stage pipeline, a second-stage pipeline and a third-stage pipeline, the number of the first-stage pipelines is two, the first-stage pipelines are used for being arranged at the top and the bottom of each battery cluster respectively, the cluster number of the battery clusters is 2N, the number of battery packs of a single battery cluster is M, M and N are positive integers, the battery clusters are arranged in an array mode, and the battery clusters in each row are divided into a plurality of pairs of battery clusters in the first direction; the number of the second-stage pipelines is 2N, the second-stage pipelines are used for being arranged on the two sides of each pair of battery clusters in the vertical direction, and at least one end of each second-stage pipeline is communicated with the first-stage pipeline; the number of the three-stage pipelines is 3N * M, and the three-stage pipelines are used for communicating the two battery packs on the same layer of each pair of battery clusters, so that the cooling liquid is distributed into each battery pack. Compared with the prior art, the number of the liquid cooling pipelines is reduced, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to a liquid cooling pipeline of an energy storage system and an installation method thereof. Background Art

[0002] The energy storage system consists of at least one battery compartment. The battery compartment contains multiple battery clusters, and each battery cluster contains multiple battery packs. Each battery pack usually uses a liquid cooling plate to dissipate heat, and a liquid cooling pipeline is installed in the battery compartment to dissipate heat from the battery pack.

[0003] In the prior art, such as Figure 1 As shown, the liquid cooling pipeline is generally divided into a total water inlet pipeline, a total water return pipeline, a primary pipeline, a secondary pipeline and a tertiary pipeline. The liquid cooling pipeline, the liquid cooling plate flow channel and the pipeline in the chiller form a circulation loop of the coolant. At present, the battery clusters in the battery compartment are arranged back to back, and the battery clusters are divided into two rows along the length of the compartment. In a battery compartment containing 2N clusters and a single cluster of M battery packs, the coolant enters the liquid cooling pipeline through the main water inlet pipeline after being cooled in the chiller, and then enters the primary pipeline in two ways. The primary pipeline is further divided into 2N ways to enter the secondary pipeline, and then enters the tertiary pipeline in M ​​ways after entering the secondary pipeline. After entering the tertiary pipeline, the coolant flows through the liquid cooling plate flow channel of a single battery pack to take away the heat generated by the battery cell when it is working, and then flows back into the tertiary pipeline. The M ways of coolant re-converge to the secondary pipeline and flow into the primary pipeline. After the two primary pipelines merge, they flow into the main return water pipeline, and then flow back to the chiller for re-cooling. This cycle is repeated to achieve the purpose of heat dissipation for the energy storage system. Among them, M and N are both positive integers.

[0004] In the above scheme, in a battery compartment containing 2N clusters and a single cluster of M battery packs, a total of 1 total water inlet pipe, 1 total water outlet pipe, 2 primary pipes, 4N secondary pipes, and 4N×M tertiary pipes are required. The number of pipes required is large and the manufacturing cost is high. Summary of the invention

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the purpose of the present invention is to provide a liquid cooling pipeline and installation method for an energy storage system, which can reduce the number of required pipelines and reduce manufacturing costs while ensuring the heat dissipation effect.

[0007] To achieve the above-mentioned object, the present invention provides, in a first aspect, a liquid cooling pipeline of an energy storage system, comprising a primary pipeline, a secondary pipeline and a tertiary pipeline;

[0008] The number of the primary pipelines is 2, which are respectively arranged at the top and bottom of the battery cluster, wherein the number of battery clusters is 2N, the number of battery packs in a single battery cluster is M, M and N are positive integers, the battery clusters are arranged in an array, and the battery clusters in each row are divided into a plurality of pairs of battery clusters along a first direction;

[0009] The number of the secondary pipelines is 2N, which are arranged on both sides of each pair of the battery clusters in the vertical direction, and at least one end of the secondary pipeline is connected to the primary pipeline;

[0010] The number of the tertiary pipelines is 3N×M, which are used to connect two battery packs located on the same layer of each pair of the battery clusters so that the coolant is distributed into each of the battery packs.

[0011] According to the liquid cooling pipeline of the energy storage system of the present invention, each row of battery clusters is divided into a plurality of pairs of battery clusters along a first direction, a secondary pipeline is arranged on both sides of each pair of battery clusters, and two battery packs located at the same layer of each pair of battery clusters are connected in series by a tertiary pipeline. Therefore, the entire liquid cooling pipeline only requires 2N secondary pipelines and 3N×M tertiary pipelines. Compared with the liquid cooling pipeline in the prior art, the number of secondary pipelines is saved by half, and the number of tertiary pipelines is saved by a quarter, thereby reducing the number of pipelines of the liquid cooling pipeline and reducing the manufacturing cost.

[0012] According to one embodiment of the present invention, the battery pack includes a battery module and a liquid cooling plate, the battery module is in contact with the liquid cooling plate, a battery pack liquid inlet and a battery pack liquid outlet are provided on the same side of the liquid cooling plate, and the battery pack liquid inlet and the battery pack liquid outlet are both connected to the tertiary pipeline.

[0013] According to an embodiment of the present invention, the battery clusters are arranged back to back, and the battery clusters are divided into two columns along the first direction.

[0014] According to one embodiment of the present invention, the tertiary pipeline includes a first delivery pipe and a second delivery pipe, the first delivery pipe is used to connect the secondary pipeline with the battery pack inlet and the secondary pipeline with the battery pack outlet, the second delivery pipe is used to connect the battery pack inlet and the battery pack outlet of two battery packs located on the same layer of each pair of the battery clusters, the number of the first delivery pipes is 2N×M, and the number of the second delivery pipes is N×M.

[0015] According to one embodiment of the present invention, it further comprises a primary and secondary pipeline three-way joint, the primary pipeline and the secondary pipeline are connected through the primary and secondary pipeline three-way joint, and the number of the primary and secondary pipeline three-way joints is 2N.

[0016] According to one embodiment of the present invention, it further comprises a secondary and tertiary pipeline tee joint, the secondary pipeline and the tertiary pipeline are connected through the secondary and tertiary pipeline tee joint, and the number of the secondary and tertiary pipeline tee joints is 2N×M.

[0017] According to one embodiment of the present invention, the inner diameter of the primary pipeline, the inner diameter of the secondary pipeline, and the inner diameter of the tertiary pipeline decrease in sequence.

[0018] According to one embodiment of the present invention, it further comprises a total liquid inlet pipeline and a total liquid outlet pipeline, wherein the total liquid inlet pipeline and the total liquid outlet pipeline are arranged on the same side of the battery cluster.

[0019] According to one embodiment of the present invention, the primary pipeline is U-shaped as a whole.

[0020] A second aspect of the present invention provides a method for installing a liquid cooling pipeline of an energy storage system, comprising:

[0021] Installing a primary pipeline, wherein the number of the primary pipelines is 2, which are respectively arranged at the top and the bottom of the battery cluster, the number of battery clusters is 2N, the number of battery packs in a single battery cluster is M, M and N are positive integers, the battery clusters are arranged in an array, and the battery clusters in each row are divided into a plurality of pairs of battery clusters along a first direction;

[0022] Installing a secondary pipeline, connecting the secondary pipeline to the primary pipeline using a secondary pipeline tee joint, wherein the number of the secondary pipelines is 2N, which are arranged on both sides of each pair of battery clusters in the vertical direction, and at least one end of the secondary pipeline is connected to the primary pipeline;

[0023] Install a tertiary pipeline, and connect the secondary pipeline and the tertiary pipeline using a secondary and tertiary pipeline tee joint, wherein the number of the tertiary pipelines is 3N×M, which are used to connect two battery packs located on the same layer of each pair of the battery clusters, so that the coolant is distributed to each of the battery packs.

[0024] According to the installation method of the liquid cooling pipeline of the energy storage system of the present invention, each row of battery clusters is divided into a plurality of pairs of battery clusters along a first direction, a secondary pipeline is arranged on both sides of each pair of battery clusters, and two battery packs located on the same layer of each pair of battery clusters are connected in series by a tertiary pipeline. Therefore, the entire liquid cooling pipeline only requires 2N secondary pipelines and 3N×M tertiary pipelines. Compared with the liquid cooling pipeline in the prior art, the number of secondary pipelines is saved by half, and the number of tertiary pipelines is saved by a quarter, thereby reducing the number of pipelines of the liquid cooling pipeline and reducing the manufacturing cost.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. Among them:

[0027] Figure 1 It is a schematic diagram of the local structure in the battery compartment of the prior art.

[0028] Figure 2 It is a schematic diagram of the local structure of a battery compartment according to an embodiment of the present invention.

[0029] Figure 3 It is a structural schematic diagram of a liquid cooling pipeline of an energy storage system according to an embodiment of the present invention.

[0030] Figure 4 It is a structural schematic diagram of a battery compartment according to an embodiment of the present invention.

[0031] Figure 5 It is a flow chart of a method for installing a liquid cooling pipeline of an energy storage system according to an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1-main liquid inlet pipeline, 2-main liquid outlet pipeline, 3-primary pipeline, 4-secondary pipeline, 5-tertiary pipeline, 51-first delivery pipe, 52-second delivery pipe, 6-battery pack, 7-liquid cooling plate, 8-battery pack liquid inlet, 9-battery pack liquid outlet. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limitations of the present invention. On the contrary, embodiments of the present invention include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0035] Reference below Figures 2 to 4 , describing the liquid cooling pipeline of the energy storage system according to an embodiment of the present invention.

[0036] The liquid cooling pipeline of the energy storage system according to the embodiment of the present invention includes a primary pipeline 3 , a secondary pipeline 4 and a tertiary pipeline 5 .

[0037] There are 2 primary pipelines 3, which are respectively arranged at the top and bottom of the battery cluster, wherein the number of battery clusters is 2N, the number of battery packs 6 of a single battery cluster is M, M and N are positive integers, the battery clusters are arranged in an array, and each row of battery clusters is divided into a plurality of pairs of battery clusters along a first direction. There are 2N secondary pipelines 4, which are arranged on both sides of each pair of battery clusters in a vertical direction, and at least one end of the secondary pipeline 4 is connected to the primary pipeline 3. There are 3N×M tertiary pipelines 5, which are used to connect two battery packs 6 located on the same layer of each pair of battery clusters, so that the coolant is distributed to each battery pack 6.

[0038] The first direction is set according to actual needs. In one example, the first direction is the length direction of the battery cluster. The length of the primary pipeline 3 is set according to actual needs, and there is no specific restriction on this. The direction of the primary pipeline 3 is set according to actual needs, and there is no specific restriction on this. In one example, the primary pipeline 3 is U-shaped as a whole, and the primary pipeline 3 can surround the projection of the battery cluster on the plane where the primary pipeline 3 is located, so as to achieve a higher cooling effect. The length of each secondary pipeline 4 is adapted to the height of the battery cluster, and the secondary pipeline 4 evenly distributes the coolant from the primary pipeline 3 to each battery cluster, so that each battery cluster can obtain enough coolant. The tertiary pipeline 5 evenly distributes the coolant from the secondary pipeline 4 to each battery pack 6 to achieve heat dissipation of the battery module in the battery pack. Although the primary, secondary and tertiary pipelines of the embodiment of the present invention are reduced in number compared with the prior art, after experimental verification, their cooling effect can meet the normal operation requirements of the energy storage system.

[0039] The coolant flows into the primary pipeline 3 under the pumping pressure of the external chiller. The coolant in the primary pipeline 3 at the bottom of the battery cluster flows upward along the secondary pipeline 4 and flows into each battery pack 6 through the tertiary pipeline 5. Then, it converges to the primary pipeline 3 at the top of the battery cluster, and finally flows out. After being cooled by the chiller, it enters the primary pipeline 3 again, and the cycle repeats.

[0040] According to the liquid cooling pipeline of the energy storage system of the embodiment of the present invention, the battery clusters in each row are divided into a plurality of pairs of battery clusters along a first direction, a secondary pipeline is arranged on both sides of each pair of battery clusters, and the two battery packs located in the same layer of each pair of battery clusters are connected in series by a tertiary pipeline. Therefore, the entire liquid cooling pipeline only requires 2N secondary pipelines and 3N×M tertiary pipelines. Compared with the liquid cooling pipeline in the prior art, the number of secondary pipelines is saved by half, and the number of tertiary pipelines is saved by a quarter, thereby reducing the number of pipelines of the liquid cooling pipeline and reducing the manufacturing cost.

[0041] In some embodiments, in combination Figure 2 and Figure 4As shown, the battery pack 6 includes a battery module and a liquid cooling plate 7, the battery module is in contact with the liquid cooling plate 7, and a battery pack liquid inlet 8 and a battery pack liquid outlet 9 are provided on the same side of the liquid cooling plate 7, and the battery pack liquid inlet 8 and the battery pack liquid outlet 9 are both connected to the tertiary pipeline 5. A flow channel is provided in the liquid cooling plate 7, the head end of the flow channel is the battery pack liquid inlet 8, and the end of the flow channel is the battery pack liquid outlet 9. The liquid cooling plate 7 makes the battery module work at a suitable temperature through the circulation of the coolant in the flow channel, thereby extending the service life.

[0042] In one example, the battery clusters are arranged back-to-back, and the battery clusters are divided into two columns along the first direction. This arrangement of the battery clusters can effectively utilize space. The back-to-back arrangement can also reduce local overheating, avoid the heat island effect, and improve the consistency and life of the battery pack.

[0043] In some embodiments, in combination Figures 2 to 4 As shown, the tertiary pipeline 5 includes a first delivery pipe 51 and a second delivery pipe 52. The first delivery pipe 51 is used to connect the secondary pipeline 4 and the battery pack inlet 8 and the secondary pipeline 4 and the battery pack outlet 9. The second delivery pipe 52 is used to connect the battery pack inlet 8 and the battery pack outlet 9 of the two battery packs located on the same layer of each pair of battery clusters. The number of first delivery pipes 51 is 2N×M, and the number of second delivery pipes 52 is N×M. Therefore, the number of the entire tertiary pipeline 5 is 3N×M. In one example, a one-way stop valve (not shown in the figure) is provided on the first delivery pipe 51 and / or the second delivery pipe 52, which can prevent the coolant from flowing back and flowing in a predetermined direction. The one-way stop valve can also keep the flow rate of the coolant relatively stable and avoid flow fluctuations caused by backflow. When some pipelines of the tertiary pipeline 5 need to be replaced, the one-way stop valve can be quickly closed to prevent the coolant from continuing to flow.

[0044] The liquid cooling pipeline of the energy storage system also includes a total liquid inlet pipeline 1 and a total liquid outlet pipeline 2, and the total liquid inlet pipeline 1 and the total liquid outlet pipeline 2 are arranged on the same side of the battery cluster. The total liquid inlet pipeline 1 and the total liquid outlet pipeline 2 can transport the coolant to the battery cluster and collect the coolant flowing out of the battery cluster, effectively control the temperature of the battery module, reduce the intersection of the pipelines, and reduce the complexity of the pipelines. The total liquid inlet pipeline 1 and the total liquid outlet pipeline 2 are arranged on the same side of the battery cluster, which can reduce the length of the liquid cooling pipeline and save material costs. The shorter the length of the liquid cooling pipeline, the less flow resistance can be, and the energy required for pumping can be reduced.

[0045] In addition, the liquid cooling pipeline of the energy storage system also includes a primary and secondary pipeline tee joint and a secondary and tertiary pipeline tee joint. The primary pipeline 3 and the secondary pipeline 4 are connected through the primary and secondary pipeline tee joints, and the number of primary and secondary pipeline tee joints is 2N. The secondary pipeline 4 and the tertiary pipeline 5 are connected through the secondary and tertiary pipeline tee joints, and the number of secondary and tertiary pipeline tee joints is 2N×M. The primary and secondary pipeline tee joints and the secondary and tertiary pipeline tee joints play the role of distributing and collecting coolant. The primary and secondary pipeline tee joints and the secondary and tertiary pipeline tee joints can be quick-connect joints when implemented, which can make some pipelines in the secondary pipeline and the tertiary pipeline easy to disassemble when replaced. And compared with the liquid cooling pipeline in the background technology, the number of primary and secondary pipeline tees and secondary and tertiary pipeline tees is reduced, which can save manufacturing costs.

[0046] The inner diameters of the primary pipeline 3, the secondary pipeline 4, and the tertiary pipeline 5 decrease in sequence. By gradually reducing the inner diameter, the flow of the coolant in each level of the pipeline can be ensured to be more uniform, avoiding local overheating. As the inner diameter of the tube decreases, the flow rate gradually increases, which helps to improve the cooling effect. A higher flow rate can better remove heat, allowing each battery module to be fully cooled.

[0047] In summary, the liquid cooling pipelines of the energy storage system in the prior art are designed as secondary and tertiary liquid cooling pipelines connecting the flow channels of the liquid cooling plates of a single cluster of battery packs, while the embodiments of the present invention connect the liquid cooling pipelines of the two clusters of battery packs in series by connecting the liquid cooling plate pipelines of the two layers of battery packs in series, thereby reducing the number of pipelines and joint accessories and reducing manufacturing costs.

[0048] Combination Figures 2 to 5 As shown, the embodiment of the present invention also proposes a method for installing a liquid cooling pipeline of an energy storage system. The implementation process of the method is as follows:

[0049] Step S102, installing the primary pipeline 3, wherein the number of the primary pipelines is 2, which are respectively arranged at the top and bottom of the battery cluster, the number of battery clusters is 2N, the number of 6 battery packs in a single battery cluster is M, M and N are positive integers, the battery clusters are arranged in an array, and each row of battery clusters is divided into a plurality of pairs of battery clusters along a first direction.

[0050] In this embodiment, the first direction is the length direction of the battery cluster.

[0051] Step S104, installing the secondary pipeline 4, connecting the secondary pipeline 4 to the primary pipeline 3 using a secondary pipeline tee joint, wherein the number of the secondary pipelines 4 is 2N, which are arranged on both sides of each pair of battery clusters in the vertical direction, and at least one end of the secondary pipeline 4 is connected to the primary pipeline 3.

[0052] In this embodiment, the primary and secondary pipeline three-way joints are quick joints, and the number of the primary and secondary pipeline three-way joints is 2N.

[0053] Step S106, installing the tertiary pipeline 5, connecting the secondary pipeline 4 and the tertiary pipeline 5 using the secondary and tertiary pipeline tee joints, wherein the number of tertiary pipelines 5 is 3N×M, which are used to connect the two battery packs 6 located on the same layer of each pair of battery clusters, so that the coolant is distributed to each battery pack 6.

[0054] In this embodiment, the secondary and tertiary pipeline tee joints are quick joints, and the number of secondary and tertiary pipeline tee joints is 2N×M. The tertiary pipeline 5 includes a first delivery pipe 51 and a second delivery pipe 52. The first delivery pipe 51 is used to connect the secondary pipeline 4 and the battery pack inlet 8 and the secondary pipeline 4 and the battery pack outlet 9. The second delivery pipe 52 is used to connect the battery pack inlet 8 and the battery pack outlet 9 of the two battery packs located on the same layer of each pair of battery clusters. The number of first delivery pipes 51 is 2N×M, and the number of second delivery pipes 52 is N×M. Therefore, the number of the entire tertiary pipeline 5 is 3N×M.

[0055] According to the installation method of the liquid cooling pipeline of the energy storage system of the embodiment of the present invention, each row of battery clusters is divided into a plurality of pairs of battery clusters along a first direction, a secondary pipeline is arranged on both sides of each pair of battery clusters, and two battery packs located on the same layer of each pair of battery clusters are connected in series by a tertiary pipeline. Therefore, the entire liquid cooling pipeline only requires 2N secondary pipelines and 3N×M tertiary pipelines. Compared with the liquid cooling pipeline in the prior art, the number of secondary pipelines is saved by half, and the number of tertiary pipelines is saved by a quarter, thereby reducing the number of pipelines of the liquid cooling pipeline and reducing the manufacturing cost.

[0056] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] In the description of the present invention, the directions or positional relationships indicated by the terms "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0060] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0062] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A liquid cooling pipeline of an energy storage system, characterized in that: It includes a primary pipeline (3), a secondary pipeline (4) and a tertiary pipeline (5); The number of the primary pipelines (3) is 2, which are respectively arranged at the top and bottom of the battery cluster, wherein the number of battery clusters is 2N, the number of battery packs (6) in a single battery cluster is M, M and N are positive integers, the battery clusters are arranged in an array, and the battery clusters in each row are divided into a plurality of pairs of battery clusters along a first direction; The number of the secondary pipelines (4) is 2N, and they are arranged on both sides of each pair of battery clusters in a vertical direction, and at least one end of the secondary pipeline (4) is connected to the primary pipeline (3); The number of the tertiary pipelines (5) is 3N×M, and they are used to connect two battery packs (6) located on the same layer of each pair of battery clusters, so that the coolant is distributed into each of the battery packs (6).

2. The liquid cooling pipeline of the energy storage system according to claim 1, characterized in that: The battery pack (6) comprises a battery cell module and a liquid cooling plate (7), the battery module and the liquid cooling plate (7) are in contact, a battery pack liquid inlet (8) and a battery pack liquid outlet (9) are provided on the same side of the liquid cooling plate (7), and the battery pack liquid inlet (8) and the battery pack liquid outlet (9) are both in communication with the tertiary pipeline (5).

3. The liquid cooling pipeline of the energy storage system according to claim 1, characterized in that: The battery clusters are arranged back to back and are divided into two columns along the first direction.

4. The liquid cooling pipeline of the energy storage system according to claim 1, characterized in that: The tertiary pipeline (5) comprises a first delivery pipe (51) and a second delivery pipe (52); the first delivery pipe (51) is used to connect the secondary pipeline (4) and the battery pack liquid inlet (8) and the secondary pipeline (4) and the battery pack liquid outlet (9); the second delivery pipe (52) is used to connect the battery pack liquid inlet (8) and the battery pack liquid outlet (9) of two battery packs located on the same layer of each pair of battery clusters; the number of the first delivery pipes (51) is 2N×M, and the number of the second delivery pipes (52) is N×M.

5. The liquid cooling pipeline of the energy storage system according to claim 1, characterized in that: It also comprises a primary and secondary pipeline three-way joint, the primary pipeline (3) and the secondary pipeline (4) are connected via the primary and secondary pipeline three-way joint, and the number of the primary and secondary pipeline three-way joints is 2N.

6. The liquid cooling pipeline of the energy storage system according to claim 1, characterized in that: It also comprises a secondary and tertiary pipeline tee joint, the secondary pipeline (4) and the tertiary pipeline (5) are connected via the secondary and tertiary pipeline tee joint, and the number of the secondary and tertiary pipeline tee joints is 2N×M.

7. The liquid cooling pipeline of the energy storage system according to claim 1, characterized in that: The inner diameter of the primary pipeline (3), the inner diameter of the secondary pipeline (4), and the inner diameter of the tertiary pipeline (5) decrease in sequence.

8. The liquid cooling pipeline of the energy storage system according to claim 1, characterized in that: It also comprises a total liquid inlet pipeline (1) and a total liquid outlet pipeline (2), wherein the total liquid inlet pipeline (1) and the total liquid outlet pipeline (2) are arranged on the same side of the battery cluster.

9. The liquid cooling pipeline of the energy storage system according to any one of claims 1 to 8, characterized in that: The primary pipeline (3) is U-shaped as a whole.

10. A method for installing a liquid cooling pipeline of an energy storage system, characterized in that: include: Installing a primary pipeline (3), wherein the number of the primary pipelines is 2, which are respectively arranged at the top and the bottom of the battery cluster, the number of battery clusters is 2N, the number of battery packs (6) in a single battery cluster is M, M and N are positive integers, the battery clusters are arranged in an array, and the battery clusters in each row are divided into a plurality of pairs of battery clusters along a first direction; Installing a secondary pipeline (4), and connecting the secondary pipeline (4) to the primary pipeline (3) using a secondary pipeline tee joint, wherein the number of the secondary pipelines (4) is 2N, and they are arranged on both sides of each pair of battery clusters in a vertical direction, and at least one end of the secondary pipeline (4) is in communication with the primary pipeline (3); A tertiary pipeline (5) is installed, and the secondary pipeline (4) and the tertiary pipeline (5) are connected by using a secondary and tertiary pipeline tee joint, wherein the number of the tertiary pipelines (5) is 3N×M, and they are used to connect two battery packs (6) located on the same layer of each pair of battery clusters, so that the coolant is distributed into each of the battery packs (6).

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