Waterproof drainage structure of energy storage system
Patent Information
- Application Number
- CN202522507532.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-26
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-26
AI Technical Summary
In existing energy storage systems, the liquid-cooled unit compartment cannot be completely sealed when it rains, allowing rainwater to enter and causing corrosion and safety hazards. Furthermore, traditional drainage methods require high waterproofing performance of the electrical components below or have limited heat dissipation.
The structure consists of a top enclosure, drainage trough, and drainage pipe. The top enclosure guides rainwater into the liquid cooling unit compartment, drains it into the drainage trough through the drain hole, and finally discharges it outside the energy storage cabinet through the drainage pipe, preventing rainwater from entering other compartments.
It enables effective rainwater drainage, reduces the waterproof and sealing requirements of other compartments in the energy storage cabinet, lowers equipment costs, meets the heat dissipation needs of multiple scenarios, and improves the application flexibility of the energy storage cabinet.
Smart Images
Figure CN224934844U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of energy storage technology, specifically to a waterproof drainage structure for an energy storage system. Background Technology
[0002] As a key component of distributed energy storage systems, the thermal management reliability of the core components—the battery pack and the power converter (PCS)—of the energy storage cabinet directly determines the lifespan and safety of the entire system. Liquid cooling technology, due to its high heat dissipation efficiency and good temperature uniformity, is gradually becoming the mainstream cooling solution for energy storage systems. The liquid cooler unit, as the core of the cooling system, is typically integrated into the cabinet to form an independent liquid cooler unit compartment. This compartment is then integrated into the energy storage cabinet, where the liquid cooler unit cools the battery pack and power converter within the cabinet.
[0003] The liquid-cooled unit compartment faces some inherent structural contradictions in actual operation: the heat dissipation of the liquid in the condenser and pipeline of the liquid-cooled unit relies on the air inlet and outlet on the compartment for forced air exchange with the outside. Furthermore, due to space constraints, in order to reduce the area occupied by the energy storage cabinet, most small energy storage cabinets adopt a front-inlet and top-outlet configuration for the liquid-cooled unit compartment, directly contacting the outside environment to dissipate heat from the liquid-cooled unit. Secondly, the compartment connecting the battery pack and PCS must have a through-compartment structure for inlet and outlet water pipes. On the other hand, the liquid-cooled unit needs to be powered and realize communication and control functions, requiring multiple wire harnesses to be connected to the control equipment.
[0004] In summary, due to the numerous demands, the liquid-cooled unit compartment is essentially a semi-open environment, making complete sealing impossible. This results in significant rainwater entering the compartment from the top during rainfall. This rainwater must be drained as quickly as possible; prolonged water accumulation can corrode the compartment and negatively impact the safety of other electrical components. If direct downward drainage is used, extremely high waterproofing requirements are placed on the electrical components within the lower cabinet, necessitating an increased protection level. If a front-to-rear cooling design is adopted to prevent top water ingress, the cooling requirements may not be met in scenarios where there is a wall at the rear of the energy storage cabinet, limiting its usability.
[0005] Therefore, how to drain rainwater that enters the liquid cooling unit compartment while ensuring overall economic efficiency is a problem that technical personnel in the industry urgently need to solve. Utility Model Content
[0006] The purpose of this invention is to provide a waterproof drainage structure for an energy storage system to solve the problems mentioned in the background art.
[0007] This utility model embodiment provides a waterproof drainage structure for an energy storage system, including: a top panel, a drainage trough, and a drainage pipe;
[0008] The energy storage system includes: an energy storage cabinet and a liquid-cooled unit compartment;
[0009] The liquid cooling unit compartment is installed on the energy storage cabinet and is sealed to the energy storage cabinet. The front side wall of the liquid cooling unit compartment is provided with an air inlet, the top is provided with an air outlet, and the bottom is provided with a drain hole.
[0010] The top enclosure is located on the top of the liquid chiller unit compartment and is in the shape of an outwardly expanding trumpet, so that rainwater above can enter the liquid chiller unit compartment from the exhaust vent.
[0011] The drainage trough is located at the bottom of the liquid cooling unit compartment and is sealed to the liquid cooling unit compartment to collect rainwater discharged from the drain hole.
[0012] The drain pipe is installed inside the energy storage cabinet, below the liquid cooling unit compartment, and connected to the drain trough, so as to discharge rainwater in the drain trough to the outside of the energy storage cabinet.
[0013] Based on the above scheme, the waterproof drainage structure of the energy storage system of this utility model, through the setting of a top enclosure, a drainage trough, and a drainage pipe, includes an energy storage cabinet and a liquid-cooled unit compartment. The liquid-cooled unit compartment is set on the energy storage cabinet and has an air inlet, an air outlet, and a drain hole. The top enclosure is set on the top of the liquid-cooled unit compartment and is in the shape of an outwardly expanding trumpet. The drainage trough is set at the bottom of the liquid-cooled unit compartment, and the drainage pipe is set inside the energy storage cabinet and connected to the drainage trough. In the waterproof drainage structure of the energy storage system of this utility model, the top enclosure diverts rainwater from above into the liquid-cooled unit compartment, and then discharges it from the drain hole of the liquid-cooled unit compartment into the drainage trough at the bottom. Finally, the water in the drainage trough is discharged to the outside of the energy storage cabinet through the drainage pipe. Rainwater entering the liquid-cooled unit compartment is completely isolated from other compartments of the energy storage cabinet, reducing the waterproof sealing requirements of other compartments and lowering equipment costs. The front wall of the liquid-cooled unit compartment has an air inlet, and the top has an exhaust outlet, which reduces the area occupied by the energy storage cabinet while meeting the heat dissipation and cooling needs of the liquid-cooled unit, thus improving the multi-scenario application capability of the energy storage cabinet.
[0014] In one feasible solution, the bottom plate of the drainage trough is inclined;
[0015] The drainage channel is provided with a first drainage connector, which is located at the bottom end of the base plate and is used to connect to the drainage pipe.
[0016] In one feasible solution, the top panel is provided with water-retaining edges on both the left and right sides;
[0017] The top of the liquid cooling unit compartment is provided with a water-blocking groove, and the water-blocking edge is inserted into the water-blocking groove.
[0018] In one feasible solution, the water-retaining edge is formed by folding the top panel.
[0019] In one feasible solution, a sealing gasket is provided between the water-blocking edge and the fixed surface of the liquid cooling unit compartment;
[0020] Sealing strips are provided between the front and rear sides of the top panel and the liquid cooling unit compartment.
[0021] In one feasible solution, multiple exhaust vents and drainage holes are provided, located on the left, middle and right sides of the liquid cooling unit compartment, respectively.
[0022] In one feasible solution, a protective net is provided on the top of the top panel.
[0023] In one feasible solution, the bottom end of the drain pipe is provided with a second drain connector and a control valve;
[0024] The second drain connector is used to connect to the hose. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the waterproof drainage structure of the energy storage system in an embodiment of the present utility model;
[0027] Figure 2 This is a front view schematic diagram of the waterproof drainage structure of the energy storage system in an embodiment of this utility model;
[0028] Figure 3 As described in the embodiments of this utility model Figure 2 A cross-sectional view along the BB direction in the middle;
[0029] Figure 4 This is a top view schematic diagram of the waterproof drainage structure of the energy storage system in this embodiment of the utility model;
[0030] Figure 5 This is a schematic diagram of the liquid cooling unit compartment in an embodiment of the present utility model;
[0031] Figure 6 This is another schematic diagram of the liquid cooling unit compartment in an embodiment of the present utility model;
[0032] Figure 7 This is a front view schematic diagram of the liquid cooling unit compartment in an embodiment of this utility model;
[0033] Figure 8 As described in the embodiments of this utility model Figure 7 A cross-sectional view along direction AA in the diagram;
[0034] Figure 9 As described in the embodiments of this utility model Figure 8 A magnified view of a portion of the image.
[0035] Numbering on the map:
[0036] 1. Top panel; 11. Water-retaining edge; 12. Protective net; 2. Drainage trough; 201. Water-retaining trough; 21. Base plate; 22. First drainage connector; 3. Drainage pipe; 31. Second drainage connector; 32. Control valve; 100. Energy storage cabinet; 200. Liquid chiller unit compartment; 210. Air inlet; 220. Air outlet; 230. Drain hole. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0040] The technical solution of this utility model will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.
[0041] As described in the background section of this application, the liquid-cooled unit compartment is a semi-open environment and cannot be completely sealed. During rain, a significant amount of rainwater will enter the compartment from the top. This rainwater must be drained as quickly as possible; prolonged water accumulation can corrode the compartment and pose a safety risk to other electrical components. If direct downward drainage is used, extremely high requirements are placed on the waterproofing performance of other electrical components in the lower cabinet, necessitating an increased protection level. If the liquid-cooled unit compartment adopts a front-to-rear cooling design to prevent top water ingress, the required heat dissipation conditions cannot be met in scenarios where there is a wall behind the energy storage cabinet, limiting its application scenarios.
[0042] Therefore, how to drain rainwater that enters the liquid cooling unit compartment while ensuring overall economic efficiency is a problem that technical personnel in the industry urgently need to solve.
[0043] To address the aforementioned problems, the inventors of this application have proposed a technical solution, the specific embodiments of which are as follows:
[0044] Figure 1 This is a schematic diagram of the waterproof drainage structure of the energy storage system in an embodiment of this utility model. Figure 2 This is a front view schematic diagram of the waterproof drainage structure of the energy storage system in an embodiment of this utility model. Figure 3 As described in the embodiments of this utility model Figure 2 A cross-sectional view along the BB direction in the diagram. Figure 4 This is a top view schematic diagram of the waterproof drainage structure of the energy storage system in this embodiment of the utility model. Figure 5 This is a schematic diagram of the liquid cooling unit compartment in an embodiment of this utility model. Figure 6 This is another schematic diagram of the liquid cooling unit compartment in an embodiment of this utility model. Figure 7This is a front view schematic diagram of the liquid cooling unit compartment in an embodiment of this utility model. Figure 8 As described in the embodiments of this utility model Figure 7 A cross-sectional view along line AA in the diagram. Figure 9 As described in the embodiments of this utility model Figure 8 A magnified view of a portion of the image.
[0045] like Figures 1 to 9 As shown, the waterproof drainage structure of the energy storage system in this embodiment includes: a top enclosure 1, a drainage trough 2, and a drainage pipe 3.
[0046] The energy storage system includes: energy storage cabinet 100 and liquid chiller unit compartment 200.
[0047] The liquid cooling unit compartment 200 is installed on the energy storage cabinet 100, located above one side of the energy storage cabinet 100. The bottom of the liquid cooling unit compartment 200 is fully welded to the energy storage cabinet 100 to ensure airtightness. The liquid cooling unit inside the liquid cooling unit compartment 200 is used to cool the battery pack (PACK) and energy storage converter (PCS) inside the energy storage cabinet 100.
[0048] The front side wall of the liquid cooling unit compartment 200 is provided with an air inlet 210, the top is provided with an air outlet 220, and the bottom of the liquid cooling unit compartment 200 is provided with a drain hole 230.
[0049] The top enclosure 1 is rectangular and is positioned on top of the liquid chiller unit compartment 200. The top enclosure 1 has an outwardly expanding trumpet shape, with the larger end of the opening facing upwards, making the cross-section of the top opening of the top enclosure 1 larger than the top cross-section of the liquid chiller unit compartment 200. When rainwater is present, it is channeled into the area enclosed by the top enclosure 1, and then enters the compartment of the liquid chiller unit compartment 200 through the exhaust vent 220 at the top.
[0050] The drainage trough 2 is located at the bottom of the liquid chiller unit compartment 200, and the top of the drainage trough 2 is sealed to the liquid chiller unit compartment 200. Rainwater entering the liquid chiller unit compartment 200 is discharged into the drainage trough 2 through the drain hole 230 of the liquid chiller unit compartment 200.
[0051] The drain pipe 3 is vertically installed inside the energy storage cabinet 100, located below the liquid cooling unit compartment 200. The top end of the drain pipe 3 is connected to and communicates with the drain trough 2, and the bottom end of the drain pipe 3 extends to the outside of the energy storage cabinet 100. Rainwater in the drain trough 2 is discharged to the outside of the energy storage cabinet 100 through the drain pipe 3.
[0052] As can be seen from the above, the waterproof drainage structure of the energy storage system in this embodiment, through the installation of a top enclosure, a drainage trough, and a drainage pipe, includes an energy storage cabinet and a liquid-cooled unit compartment. The liquid-cooled unit compartment is mounted on the energy storage cabinet and has an air inlet, an air outlet, and a drain hole. The top enclosure is located on top of the liquid-cooled unit compartment and is shaped like an outwardly expanding trumpet. The drainage trough is located at the bottom of the liquid-cooled unit compartment, and the drainage pipe is located inside the energy storage cabinet and connected to the drainage trough. In this embodiment, the waterproof drainage structure of the energy storage system allows the top enclosure to divert rainwater from above into the liquid-cooled unit compartment, and then discharge it from the drain hole of the liquid-cooled unit compartment into the drainage trough at the bottom. Finally, the rainwater in the drainage trough is discharged to the outside of the energy storage cabinet through the drainage pipe. Rainwater entering the liquid-cooled unit compartment is completely isolated from other compartments of the energy storage cabinet. It is discharged to the outside through drainage channels and pipes without passing through other compartments of the energy storage cabinet, which reduces the waterproof sealing requirements of other compartments of the energy storage cabinet and reduces equipment costs. The front wall of the liquid-cooled unit compartment is equipped with an air inlet and the top is equipped with an air outlet, which makes the energy storage cabinet occupy less space, meets the heat dissipation and cooling requirements of the liquid-cooled unit, and improves the multi-scenario application capability of the energy storage cabinet.
[0053] Optional, such as Figure 3 As shown, in this embodiment, the bottom plate 21 of the drainage trough 2 of the energy storage system is inclined and has a certain slope.
[0054] The bottom of the drainage trough 2 is provided with a first drainage connector 22, and the first drainage connector 22 is located at the lowest end of the bottom plate 21. The top end of the drainage pipe 3 is connected to the first drainage connector 22 through a connector.
[0055] In this embodiment, the bottom plate of the drainage trough is inclined, and the first drainage connector is located at the lowest end of the bottom plate. Rainwater entering the drainage trough will be quickly discharged from the first drainage connector and the drainage pipe, and will not accumulate in the drainage trough.
[0056] Optional, such as Figure 9 As shown, in this embodiment, the waterproof drainage structure of the energy storage system has outwardly extending water-blocking edges 11 on the left and right sides of the bottom of the top panel 1.
[0057] Water-blocking grooves 201 are provided on both sides of the top of the liquid chiller unit compartment 200. The water-blocking edge 11 of the top enclosure 1 is inserted into the water-blocking groove 201 of the liquid chiller unit compartment 200 to effectively introduce rainwater into the compartment of the liquid chiller unit compartment 200 and finally discharge it into the drainage groove 2. Rainwater entering the area enclosed by the top enclosure 1 will not flow out to other places of the energy storage cabinet 100.
[0058] Furthermore, in this embodiment, the waterproof and drainage structure of the energy storage system has a water-blocking edge 11 on the top panel 1 that is an integral structure with the top panel 1, formed by folding the top panel 1 outwards, which facilitates the forming of the water-blocking edge 11.
[0059] The water baffle 201 of the liquid cooling unit compartment 200 is also formed by bending the top plate of the liquid cooling unit compartment 200.
[0060] Furthermore, in this embodiment, the waterproof drainage structure of the energy storage system has a sealing gasket (not shown in the figure) between the water-blocking edge 11 of the top panel 1 and the fixed surface of the liquid-cooled unit compartment 200.
[0061] Sealing strips are also provided between the front and rear sides of the top enclosure 1 and the liquid chiller unit compartment 200, making the area around the top enclosure 1 and the liquid chiller unit compartment 200 more sealed, effectively preventing rainwater entering the area enclosed by the top enclosure 1 from flowing out and entering other parts of the energy storage cabinet 100.
[0062] Optional, such as Figure 5 As shown, in this embodiment, the energy storage system has a waterproof and drainage structure with three exhaust vents 220 on the top of the liquid chiller unit compartment 200. The three exhaust vents 220 are located on the left, middle and right sides of the top, respectively, which ensures rapid heat dissipation of the liquid chiller unit and allows rainwater to quickly enter the liquid chiller unit compartment 200.
[0063] like Figure 6 As shown, multiple drainage holes 230 are provided at the bottom of the liquid chiller unit compartment 200, located on the left, middle and right sides of the bottom of the liquid chiller unit compartment 200, so that rainwater entering the liquid chiller unit compartment 200 can be quickly discharged into the drainage trough 2 and finally discharged from the drainage pipe 3.
[0064] Optionally, in this embodiment, the energy storage system has a waterproof drainage structure, with a protective net 12 on the top of the top panel 1. The protective net 12 protects the liquid-cooled unit compartment 200 and prevents debris from entering and blocking the exhaust vent 220 of the liquid-cooled unit compartment 200.
[0065] Optionally, in this embodiment, the energy storage system has a waterproof drainage structure, with a second drainage connector 31 and a control valve 32 at the bottom end of the drainage pipe 3.
[0066] The second drain connector 31 is used to connect to an external hose to facilitate the drainage of rainwater to a designated area.
[0067] Control valve 32 can control the opening and closing of drain pipe 3.
[0068] In this utility model, unless otherwise explicitly specified and limited, the first feature being "on" or "below" the second feature can mean that the first feature and the second feature are in direct contact, or that the first feature and the second feature are in indirect contact through an intermediate medium.
[0069] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "under," and "beneath" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0070] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A waterproof drainage structure for an energy storage system, characterized in that, include: Top paneling, drainage trough and drainage pipe; The energy storage system includes: an energy storage cabinet and a liquid-cooled unit compartment; The liquid cooling unit compartment is installed on the energy storage cabinet and is sealed to the energy storage cabinet. The front side wall of the liquid cooling unit compartment is provided with an air inlet, the top is provided with an air outlet, and the bottom is provided with a drain hole. The top enclosure is located on the top of the liquid chiller unit compartment and is in the shape of an outwardly expanding trumpet, so that rainwater above can enter the liquid chiller unit compartment from the exhaust vent. The drainage trough is located at the bottom of the liquid cooling unit compartment and is sealed to the liquid cooling unit compartment to collect rainwater discharged from the drain hole; The drain pipe is installed inside the energy storage cabinet, below the liquid cooling unit compartment, and connected to the drain trough, so as to discharge rainwater in the drain trough to the outside of the energy storage cabinet.
2. The waterproof drainage structure of the energy storage system according to claim 1, characterized in that, The bottom plate of the drainage trough is inclined; The drainage channel is provided with a first drainage connector, which is located at the bottom end of the base plate and is used to connect to the drainage pipe.
3. The waterproof drainage structure of the energy storage system according to claim 1, characterized in that, The top panel is provided with water-retaining edges on both the left and right sides; The top of the liquid cooling unit compartment is provided with a water-blocking groove, and the water-blocking edge is inserted into the water-blocking groove.
4. The waterproof drainage structure of the energy storage system according to claim 3, characterized in that, The water-retaining edge is formed by folding the top panel.
5. The waterproof drainage structure of the energy storage system according to claim 3, characterized in that, A sealing gasket is provided between the water-blocking edge and the fixed surface of the liquid cooling unit compartment; Sealing strips are provided between the front and rear sides of the top panel and the liquid cooling unit compartment.
6. The waterproof drainage structure of the energy storage system according to claim 1, characterized in that, Multiple exhaust vents and drainage holes are provided, located on the left, middle and right sides of the liquid cooling unit compartment, respectively.
7. The waterproof drainage structure of the energy storage system according to claim 1, characterized in that, The top of the top panel is equipped with a protective net.
8. The waterproof drainage structure of the energy storage system according to claim 1, characterized in that, The bottom end of the drain pipe is equipped with a second drain connector and a control valve; The second drain connector is used to connect to the hose.