Liquid cooling energy storage system

Abstract

The utility model relates to the technical field of energy storage systems, in particular to a liquid cooling energy storage system, and aims to solve the problems that an existing liquid cooling energy storage system is large in operation noise and a noise reduction device occupies the space of a battery system in the energy storage system. In order to achieve the purpose, the liquid cooling energy storage system comprises a container; the liquid cooling unit is mounted in the container, and the liquid cooling unit is provided with an air inlet and an air outlet; and the noise reduction assembly is installed outside the container, and the noise reduction assembly corresponds to the position of the air inlet and the position of the air outlet of the liquid cooling unit. The noise reduction device can absorb noise generated by operation of the fan of the liquid cooling unit on the premise that airflow is not affected, meanwhile, the noise reduction device can be prevented from occupying the internal space of the container, in other words, the space of a battery system in the container can be prevented from being occupied, and then the energy density of an energy storage system is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage systems, and particularly provides a liquid-cooled energy storage system. Background Art

[0002] At present, most energy storage systems use liquid-cooled units to cool the battery system. With the increase of the energy density of the energy storage system and the growing installed capacity, the demand for the cooling capacity of the liquid-cooled unit is increasing. At the same time, restricted by the layout space, more fans are used in the liquid-cooled unit, resulting in an increasing noise during the operation of the system.

[0003] In the prior art, the fan can be arranged inside a noise reduction housing, and sound-absorbing cotton is arranged inside the housing to absorb noise for noise reduction. When this solution is applied to the battery compartment of the energy storage system, the added noise reduction housing will occupy the space of the battery system, thereby affecting the energy density of the energy storage system.

[0004] In view of the problems of the above prior art, those skilled in the art urgently need a liquid-cooled energy storage system to reduce the noise during the operation of the liquid-cooled unit and avoid occupying the space of the battery system. Summary of the Utility Model

[0005] The utility model aims to solve the above technical problems, that is, to solve the problems of large operation noise of the existing liquid-cooled energy storage system and the noise reduction device occupying the space of the battery system in the energy storage system.

[0006] In a first aspect, the utility model provides a liquid-cooled energy storage system, including: a container; a liquid-cooled unit installed inside the container, and the liquid-cooled unit is provided with an air inlet and an air outlet; and a noise reduction component installed outside the container, and the noise reduction component corresponds to the positions of the air inlet and the air outlet of the liquid-cooled unit.

[0007] Further, the noise reduction component includes a plurality of sound-absorbing louvers; each sound-absorbing louver includes a sound-absorbing cover and a plurality of sound-absorbing blades arranged at intervals inside the sound-absorbing cover; one end of the sound-absorbing cover close to the container is connected to the container, and the cross-section of the sound-absorbing blade is in an inverted V-shaped structure.

[0008] Further, the sound-absorbing louvers are configured to be able to adjust the distance between the plurality of sound-absorbing blades.

[0009] Further, the air inlet sound-absorbing louvers include a first sound-absorbing louver and a second sound-absorbing louver, and the second sound-absorbing louver is located below the first sound-absorbing louver; one end of the second sound-absorbing louver is hinged to the container, and the other end is detachably connected to the container.

[0010] Further, the silencing cover includes a first housing and a second housing that are relatively slidably connected; the sound-absorbing blades include a first blade and a second blade that are relatively rotatably connected, and an included angle is formed between the first blade and the second blade; the silencing louvers are configured such that when the first housing and the second housing slide relative to each other, the first blade and the second blade rotate relative to each other.

[0011] Further, the sound-absorbing blades further include a rotating shaft, and one end of each of the first blade and the second blade is rotatably connected to the rotating shaft; the other end of the first blade is rotatably connected to the first housing, and the other end of the second blade is rotatably connected to the second housing.

[0012] Further, each of the first blade and the second blade includes a support structure and sound-absorbing cotton connected to the support structure.

[0013] Further, the sound-absorbing cotton is glass fiber cotton or rock wool or polyester fiber cotton.

[0014] Further, the thickness dimension of the sound-absorbing blades is 50 - 60 mm.

[0015] Further, the silencing cover is made of galvanized steel sheet.

[0016] In the case of adopting the above technical solutions, the beneficial effects of the present utility model are as follows:

[0017] (1) The noise reduction assembly of the present utility model includes a plurality of silencing louvers, all of which are installed outside the container, and the plurality of silencing louvers are arranged corresponding to the air inlets and outlets of the liquid cooling unit. Without affecting the air flow, the noise generated by the operation of the fan of the liquid cooling unit is absorbed; and by adopting the scheme of arranging a plurality of silencing louvers outside the container, it is possible to avoid the noise reduction device occupying the space inside the container, that is, it is possible to avoid occupying the space of the battery system inside the container, and further avoid affecting the energy density of the energy storage system.

[0018] (2) The silencing louvers of the present utility model include a silencing cover and a plurality of spaced-apart sound-absorbing blades. The sound-absorbing blades are in an inverted V-shaped structure and are provided with sound-absorbing cotton, which is used for diverting the air flow and achieving the effect of noise reduction; the preferred scheme is that the distance between adjacent sound-absorbing blades can be adjusted. Specifically, by sliding and adjusting the connection position of the first housing and the second housing of the silencing cover, the first blade and the second blade of the sound-absorbing blades are driven to rotate relative to each other, the included angle between the first blade and the second blade changes, and the distance between adjacent sound-absorbing blades is adjusted accordingly; thus, for different liquid cooling units, by correspondingly adjusting the distance between a plurality of sound-absorbing blades inside the silencing louvers, the air flow and the noise reduction effect are adjusted, and it has good applicability.

[0019] (3) The liquid cooling unit of the present utility model is installed inside the container. The power distribution cabinet of the liquid cooling unit is located at the lower position. By setting the lower air intake silencing louver, i.e., the second silencing louver, into an opening structure, one end of the second silencing louver is connected to the container through a hinge, and the other end is detachably connected to the container. The connection structure between the second silencing louver and the container is opened to perform maintenance on the liquid cooling unit, which is convenient for later operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, in which:

[0021] Figure 1 is a schematic internal structure diagram of the liquid cooling energy storage system of the present utility model;

[0022] Figure 2 is a schematic installation diagram of the noise reduction component of the liquid cooling energy storage system of the present utility model;

[0023] Figure 3 is a three-dimensional structure diagram of the first embodiment of the silencing louver of the present utility model;

[0024] Figure 4 is the front view of the first embodiment of the silencing louver of the present utility model;

[0025] Figure 5 is Figure 4 the sectional view taken along the line A-A in

[0026] Figure 6 is a schematic diagram of the second embodiment of the silencing louver of the present utility model Figure 1 ;

[0027] Figure 7 is a schematic diagram of the second embodiment of the silencing louver of the present utility model Figure 2 .

[0028] REFERENCE MARKS:

[0029] 1 - Container; 2 - Noise reduction component; 3 - Liquid cooling unit; 4 - Battery system; 5 - Power distribution busbar cabinet; 6 - Pipeline system; 7 - Fire protection system;

[0030] 21 - Silencing cover; 211 - First housing; 212 - Second housing;

[0031] 22 - Sound absorption blade; 221 - First blade; 222 - Second blade; 223 - Rotating shaft;

[0032] 201 - First silencing louver; 202 - Second silencing louver; 203 - Third silencing louver; 204 - Fourth silencing louver. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The embodiments cited are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0034] It should be noted that in the description of the present utility model, terms indicating directions or positional relationships such as "upper", "lower", etc. are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "set", "connected", "connected to" 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 mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] The noise generated during the operation of the liquid-cooled energy storage system mainly comes from the fan of the liquid-cooled unit 3. Since the energy storage system belongs to an open space and the noise generated during operation is broadband, an active noise reduction scheme cannot be adopted, and only a passive noise reduction scheme can be used; the passive noise reduction scheme is divided into two types: sound insulation and sound absorption. Since the liquid-cooled unit needs to exchange heat with the external environment during operation, if a sound insulation scheme is adopted, a very large sound insulation cover is required to meet the requirements, and this scheme is not applicable to actual project applications. Therefore, for the noise problem generated during the operation of the liquid-cooled energy storage system, only a sound absorption scheme can be used for noise reduction.

[0037] As Figures 1 to 7 shown, an embodiment of the present utility model discloses a liquid-cooled energy storage system, in which Figure 1 shown is a schematic internal structure diagram of the liquid-cooled energy storage system. The liquid-cooled energy storage system includes a container 1 and a liquid-cooled unit 3, a battery system 4, a power distribution busbar cabinet 5, a pipeline system 6, and a fire protection system 7 arranged in the container 1.

[0038] The battery system 4 includes a plurality of battery packs. The plurality of battery packs form a battery cluster, and the plurality of battery clusters are installed in the container 1; the pipeline system 6 includes a battery pack liquid-cooling pipeline and a battery cluster liquid-cooling pipeline. The plurality of battery packs are connected to the battery cluster liquid-cooling pipeline through the battery pack liquid-cooling pipeline, and the plurality of battery cluster liquid-cooling pipelines are connected to the liquid-cooled unit 3 through a total liquid-cooling pipeline. The liquid-cooled unit 3 supplies cooling through the pipeline to cool the plurality of battery packs.

[0039] As shown Figure 2 in the figure, the liquid-cooled energy storage system of the present utility model is provided with a noise reduction component 2, the noise reduction component 2 is installed outside the container 1, and the noise reduction component 2 includes a plurality of silencing louvers; the liquid-cooled unit 3 is installed at one end inside the container 1, its air inlet corresponds to the front of the container 1, and its air outlet corresponds to the side of the container 1; the plurality of silencing louvers of the present utility model are respectively installed on the front and side of the container 1 to correspond to the positions of the air inlet and air outlet of the liquid-cooled unit 3, so as to absorb the noise generated during the operation of the fan of the liquid-cooled unit 3.

[0040] It should be noted that the number of the silencing louvers in the embodiment of the present utility model is 4, but it is not limited thereto. Those skilled in the art can set the number of the silencing louvers according to the actual situation, and the present utility model does not make a specific limitation, as long as the noise during the operation of the liquid-cooled unit 3 can be absorbed by a plurality of silencing louvers.

[0041] As a preferred embodiment of the present utility model, continue to refer to Figure 2 , the noise reduction component 2 includes an air inlet silencing louver and an air outlet silencing louver. Among them, the air inlet silencing louver corresponds to the position of the air inlet of the liquid-cooled unit 3, and the air inlet silencing louver includes a first silencing louver 201 and a second silencing louver 202 arranged in an up-and-down structure; the air outlet silencing louver corresponds to the position of the air outlet of the liquid-cooled unit 3, and the air outlet silencing louver includes a third silencing louver 203 and a fourth silencing louver 204 arranged in an up-and-down structure;

[0042] Since the power distribution cabinet of the liquid-cooled unit 3 is located below, correspondingly, the second silencing louver 202 of the present utility model located below is designed into a door structure. Specifically, one end of the second silencing louver 202 is connected to the outer wall of the container 1 through a hinge, and the other end is detachably connected to the outer wall of the container 1 through a locking structure, so that by opening the locking structure between the second silencing louver 202 and the container 1, the subsequent maintenance of the liquid-cooled unit 3 can be carried out.

[0043] Those skilled in the art can specifically set the locking structure, and the present utility model does not make a specific limitation, as long as the function of detachable connection between the second silencing louver 202 and the container 1 can be realized.

[0044] As a preferred embodiment of the present utility model, as Figures 3 to 7 shown, the structures of the plurality of silencing blades of the present utility model are basically the same, and each includes a silencing cover 21 and a plurality of sound-absorbing blades 22. The plurality of sound-absorbing blades 22 are arranged at intervals in the up-and-down direction inside the silencing cover 21;

[0045] The sound insulation cover 21 is provided with mounting holes and is connected to the outer wall of the container 1 through fasteners such as bolts; the cross-section of the sound absorption blade 22 is in an inverted V-shaped structure, and the part of the sound absorption blade 22 close to the outside is inclined downward to prevent rainwater from entering the sound insulation cover 21;

[0046] The spacing between two adjacent sound absorption blades 22 defines a channel for air flow, which plays a role in diverting the air flow. When the liquid cooling unit 3 operates, through a plurality of sound absorption blades 22, the noise generated by the operation of the fan of the liquid cooling unit 3 can be absorbed without affecting the air flow.

[0047] As a preferred embodiment of the present utility model, the present utility model jointly determines the spacing between a plurality of sound absorption blades 22 inside the sound insulation louvers according to the air flow required by the liquid cooling unit 3 and the required noise reduction effect. On the premise of meeting the air flow required by the liquid cooling unit 3, reducing the spacing between adjacent sound absorption blades 22 can improve the noise reduction effect.

[0048] In a specific embodiment, the sound insulation louvers can adopt a scheme with a fixed spacing between a plurality of sound absorption blades 22. According to the parameters of the liquid cooling unit 3, the spacing between adjacent sound absorption blades 22 is designed, and then the designed sound insulation louvers are installed at the corresponding position of the container 1.

[0049] In another specific embodiment, as Figure 6 and Figure 7 shown, the sound insulation louvers can adopt a scheme with an adjustable spacing between a plurality of sound absorption blades 22; specifically, the sound insulation cover 21 includes a first housing 211 and a second housing 212 that can slide relative to each other, and the sound absorption blade 22 includes a first blade 221 and a second blade 222 that can rotate relative to each other. An included angle is formed between the first blade 221 and the second blade 222, and the overall structure is in an inverted V-shaped structure;

[0050] When the first housing 211 and the second housing 212 slide relative to each other, it drives the first blade 221 and the second blade 222 to rotate relative to each other, so as to adjust the spacing between adjacent sound absorption blades 22;

[0051] For example, in Figure 6 , the first housing 211 and the second housing 212 are in the first state before adjustment, and at this time, the spacing between adjacent sound absorption blades 22 is t1; in Figure 7 , the first housing 211 and the second housing 212 slide relative to each other and are in the second state after adjustment. At this time, the included angle between the first blade 221 and the second blade 222 decreases, and the spacing between adjacent sound absorption blades 22 is t2, and t2 < t1; compared with the first state in Figure 6 , in Figure 7The noise reduction effect of the silencing louver in the second state is stronger. Therefore, according to the flow field of the air flow, the present utility model can be applicable to liquid cooling units 3 with different parameters by adjusting the distance between adjacent sound-absorbing blades 22, and has good applicability.

[0052] As a preferred embodiment of the present utility model, continue to refer to Figure 6 and Figure 7 As shown, the sound-absorbing louver 22 further includes a rotating shaft 223. One ends of the first blade 221 and the second blade 222 are rotatably connected to the rotating shaft 223, and the other end of the first blade 221 is rotatably connected to the first housing 211, and the other end of the second blade 222 is rotatably connected to the second housing 212;

[0053] When the relative sliding adjustment connection position between the first housing 211 and the second housing 212, it can drive both the first blade 221 and the second blade 222 to rotate relative to the rotating shaft 223. At this time, the included angle between the first blade 221 and the second blade 222 changes, realizing the adjustment of the distance between adjacent sound-absorbing blades 22.

[0054] It should be noted that in the embodiment of the present utility model, the relative rotation between the first blade 221 and the second blade 222 is realized by setting the rotating shaft 223. Those skilled in the art can also adopt other structures to realize the relative rotation between the first blade 221 and the second blade 222, and the present utility model does not make specific limitations.

[0055] As a preferred embodiment of the present utility model, the specific structure of the sound-absorbing blade 22 includes a support structure and sound-absorbing cotton connected to the support structure, and the sound-absorbing cotton absorbs the noise generated during the operation of the liquid cooling unit 3; the sound-absorbing cotton can be made of glass fiber cotton or rock wool or polyester fiber cotton, and other materials with sound-absorbing functions can also be used. Those skilled in the art can specifically select according to the actual situation, and the present utility model does not make specific limitations.

[0056] As a preferred embodiment of the present utility model, the thickness dimension of the sound-absorbing blade 22 is 50 - 60 mm, preferably 55 mm.

[0057] As a preferred embodiment of the present utility model, the silencing cover 21 is made of galvanized steel sheet. Those skilled in the art can also adopt other materials, and the present utility model does not make specific limitations.

[0058] When the liquid cooling unit 3 of the energy storage system of the present utility model is in operation, it will generate relatively large noise. By arranging a noise reduction component 2 around the liquid cooling unit 3, the noise reduction component 2 includes a plurality of silencing louvers corresponding to the air inlets and outlets of the liquid cooling unit 3. By adopting the scheme of adding a plurality of silencing louvers outside the container 1, the noise generated during the operation of the system can be reduced from above 85 decibels to 70 decibels, that is, the system noise can be reduced by at least 15 decibels. At the same time, it can avoid occupying the space of the battery system 4 in the container 1, avoid affecting the energy density of the energy storage system, and improve the competitiveness of the product and the user experience.

[0059] Moreover, the silencing louvers for noise reduction can be designed into a structure with adjustable spacing between adjacent sound-absorbing blades 22. When applied to the noise reduction of liquid cooling units 3 with different parameters, by adjusting the spacing between a plurality of sound-absorbing blades 22 inside the silencing louvers, the noise reduction effect and the air flow effect of the silencing louvers can be adjusted. In practical applications, the existing energy storage system can be improved by adding silencing louvers, which has good applicability.

[0060] So far, the technical solution of the present utility model has been described in combination with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present utility model.

Claims

1. A liquid-cooled energy storage system, characterized in that, Comprising: A container (1); A liquid cooling unit (3), which is installed inside the container (1), and the liquid cooling unit (3) is provided with an air inlet and an air outlet; and A noise reduction component (2), which is installed outside the container (1), and the noise reduction component (2) corresponds to the air inlet and the air outlet positions of the liquid cooling unit (3).

2. The liquid-cooled energy storage system according to claim 1, wherein The noise reduction component (2) includes a plurality of sound-absorbing louvers; The sound-absorbing louver includes a sound-absorbing cover (21) and a plurality of sound-absorbing blades (22) arranged at intervals inside the sound-absorbing cover (21); one end of the sound-absorbing cover (21) close to the container (1) is connected to the container (1), and the cross-section of the sound-absorbing blade (22) is in an inverted V-shaped structure.

3. The liquid-cooled energy storage system according to claim 2, wherein The sound-absorbing louver is configured to be able to adjust the distance between the plurality of sound-absorbing blades (22).

4. The liquid-cooled energy storage system according to claim 2, wherein The noise reduction component (2) includes an air inlet sound-absorbing louver and an air outlet sound-absorbing louver; The air inlet sound-absorbing louver includes a first sound-absorbing louver (201) and a second sound-absorbing louver (202), and the second sound-absorbing louver (202) is located below the first sound-absorbing louver (201); one end of the second sound-absorbing louver (202) is hinged to the container (1), and the other end is detachably connected to the container (1).

5. The liquid-cooled energy storage system according to claim 3, wherein The sound-absorbing cover (21) includes a first housing (211) and a second housing (212) that are slidably connected to each other; The sound-absorbing blade (22) includes a first blade (221) and a second blade (222) that are rotatably connected to each other, and an included angle is formed between the first blade (221) and the second blade (222); The sound-absorbing louver is configured such that when the first housing (211) and the second housing (212) slide relative to each other, the first blade (221) and the second blade (222) rotate relative to each other.

6. The liquid-cooled energy storage system according to claim 5, wherein The sound-absorbing blade (22) further includes a rotating shaft (223), and one ends of the first blade (221) and the second blade (222) are both rotatably connected to the rotating shaft (223); The other end of the first blade (221) is rotatably connected to the first housing (211), and the other end of the second blade (222) is rotatably connected to the second housing (212).

7. The liquid-cooled energy storage system according to claim 5, wherein Both the first blade (221) and the second blade (222) include a support structure and sound-absorbing cotton connected to the support structure.

8. The liquid-cooled energy storage system according to claim 7, wherein The sound-absorbing cotton is glass fiber cotton or rock wool or polyester fiber cotton.

9. The liquid-cooled energy storage system according to claim 2, wherein, The thickness dimension of the sound-absorbing blade (22) is 50 - 60 mm.

10. The liquid-cooled energy storage system according to claim 2, wherein The sound-absorbing cover (21) is made of galvanized steel sheet.

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