A spray plate for a liquid-cooled energy storage integrated cabinet
Patent Information
- Application Number
- CN202522177470.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-15
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-10-15
AI Technical Summary
[0003]现有技术中，喷淋板的流体通道多采用等截面设计，喷淋孔孔径也多为统一尺寸，液体在流动过程中会因沿程压力损失导致远端喷淋孔压力降低，同时部分设计中流道分支不对称、进液位置偏移等问题，进一步加剧了不同位置喷淋孔的流量差异；这些缺陷导致各喷淋孔出液量偏差较大，无法保证每个电池获得等量的冷却液体，造成电池组温度不均衡，影响液冷储能一体柜的整体性能
[0026]1.本实用新型公开一种液冷储能一体柜用喷淋板，其通过沿各分支流通方向设置“远离分支入口的喷淋孔孔径增大、对应流道横截面面积减小”的协同结构，实现不同位置喷淋孔的压力与流阻动态匹配，保障各喷淋孔流出液体的流量一致性。
Smart Images
Figure CN224745750U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid cooling technology, and in particular to a spray plate for an integrated liquid-cooled energy storage cabinet. Background Technology
[0002] In liquid-cooled energy storage integrated cabinets, the spray plate is the core component for liquid distribution. The consistency of the flow rate of its spray holes directly affects the uniformity of battery heat dissipation, which in turn affects the operational stability and service life of the energy storage system. Therefore, ensuring that the liquid output from each spray hole of the spray plate is consistent is of great technical necessity.
[0003] In existing technologies, the fluid channels of spray plates mostly adopt a uniform cross-section design, and the spray hole diameters are mostly of uniform size. During the flow of liquid, the pressure of the far-end spray holes will decrease due to pressure loss along the flow path. At the same time, some designs have problems such as asymmetrical flow channel branches and offset liquid inlet positions, which further aggravate the flow differences of spray holes at different positions. These defects result in large deviations in the liquid output of each spray hole, making it impossible to ensure that each battery receives an equal amount of cooling liquid, causing uneven battery pack temperature and affecting the overall performance of the liquid-cooled energy storage integrated cabinet. Utility Model Content
[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a spray plate for a liquid-cooled energy storage integrated cabinet, which achieves consistent liquid output from each hole and improves the uniformity of heat dissipation of the battery in the energy storage cabinet.
[0005] The above-mentioned utility model objective is achieved through the following technical solution:
[0006] A spray plate for a liquid-cooled energy storage integrated cabinet includes a plate body, wherein a continuous fluid channel is formed on the upper surface of the plate body, and the fluid channel is provided with a liquid inlet;
[0007] The plate has multiple spray holes, each of which penetrates the plate and communicates with the interior of the fluid channel.
[0008] Along the flow direction of fluid in each branch of the fluid channel, the diameter of the spray hole farther from the inlet of the branch is larger than that of the spray hole closer to the inlet of the branch; and the cross-sectional area of the fluid channel connected to the spray hole farther from the inlet of the branch is smaller than that of the fluid channel connected to the spray hole closer to the inlet of the branch.
[0009] Through the above technical solution, the fluid channels on the plate and the spray holes form a continuous flow path. Along the flow direction of each branch, the spray hole diameter increases as it moves away from the branch inlet, and the corresponding flow channel cross-sectional area decreases as it moves away from the branch inlet. Through the gradient matching of the flow resistance of the flow channel and the resistance of the spray hole, the flow distribution relationship at different positions is controlled, providing structural support for the consistency of the flow of each spray hole (deviation ≤3%).
[0010] As a further technical solution of this utility model: the fluid channel includes a liquid inlet channel and two sets of parallel branch channels connected thereto; the two sets of branch channels have the same structure at corresponding positions and are symmetrically distributed on the plate.
[0011] Through the above technical solution, the liquid inlet channel and the two sets of symmetrically distributed parallel branch channels form a symmetrical flow channel structure, which ensures the initial liquid inlet pressure of the two sets of branch channels is balanced, avoids the flow deviation problem caused by structural asymmetry from the source, reduces the flow deviation between the two sets of branches, and achieves branch-level flow balance.
[0012] As a further technical solution of this utility model: each group of branch channels includes multiple liquid distribution channels and multiple sub-branch channels.
[0013] Each of the aforementioned liquid distribution channels connects to two symmetrically distributed sub-branch channels;
[0014] The liquid distribution channel is close to the liquid inlet channel, and the liquid distribution channel is not provided with the spray hole;
[0015] The spray holes are spaced apart on the sub-branch channel, and the axis of each spray hole is collinear with the center line of the corresponding sub-branch channel.
[0016] Through the above technical solution, each branch channel adopts a hierarchical flow distribution structure of "liquid distribution channel and sub-branch channel", and with the design of connecting two symmetrical sub-branches to each liquid distribution channel, the liquid is evenly distributed during the liquid distribution stage; the spray holes distributed at intervals on the sub-branch channel and whose axes are collinear with the center line of the sub-branch can reduce the local resistance interference when the liquid flows out, so as to achieve the balance of flow rate in the same sub-branch and between different sub-branches.
[0017] As a further technical solution of this utility model: in each group of branch channels, the cross-sectional area of the sub-branch channel that is far from the liquid inlet channel is smaller than the cross-sectional area of the sub-branch channel that is close to the liquid inlet channel.
[0018] Through the above technical solution, the cross-sectional size of the sub-branch channel far from the liquid inlet channel is smaller (higher flow resistance). Through the gradient design of "low flow resistance on the near side + high flow resistance on the far side", the fluid in the high pressure zone at the near end flows too fast to the far end, and the flow distribution rhythm of the sub-branch at the near end and the far end is regulated, so as to balance the flow difference between the sub-branch connected by different liquid distribution channels.
[0019] As a further technical solution of this utility model: in each of the sub-branch channels, the diameter of the spray hole farther away from the liquid distribution channel is larger than the diameter of the spray hole closer to the liquid distribution channel.
[0020] Through the above technical solution, in each sub-branch channel, the nozzle diameter of the spray hole gradually increases as it moves away from the liquid distribution channel (the nozzle resistance decreases). In the environment of "low static pressure and high flow resistance" at the far end, the flow loss caused by the flow along the same sub-branch is compensated by reducing the nozzle resistance, thereby balancing the liquid output of the spray holes at different positions.
[0021] As a further technical solution of this utility model: the spray holes are evenly distributed on each of the sub-branch channels, and the number of spray holes on each of the sub-branch channels is equal.
[0022] With the above technical solution, the spray holes are evenly distributed and equal in number on each sub-branch channel, which can ensure the balanced load of the spray holes on each sub-branch channel and avoid local flow concentration or insufficient flow caused by excessively high or low density of spray holes in some sub-branch channels, thus providing a uniform load basis for the consistency of flow across sub-branch channels.
[0023] As a further technical solution of this utility model: a spray pipe is connected to the center of the liquid inlet channel.
[0024] Through the above technical solution, the spray pipe connected in the center above the liquid inlet channel can guide the liquid to flow in from the center of the liquid inlet channel, reduce the flow deviation phenomenon during the liquid inlet stage, ensure that the initial flow of liquid to the two sets of parallel branch channels is uniform, reduce the flow deviation caused by the asymmetry of liquid inlet, and provide a balanced initial condition for the flow adjustment of subsequent stages.
[0025] In summary, this utility model has at least one of the following beneficial technical effects:
[0026] 1. This utility model discloses a spray plate for a liquid-cooled energy storage integrated cabinet. By setting a coordinated structure along each branch flow direction, which increases the diameter of the spray holes away from the branch inlet and decreases the cross-sectional area of the corresponding flow channel, the pressure and flow resistance of the spray holes at different positions are dynamically matched, ensuring the consistency of the flow rate of the liquid flowing out of each spray hole.
[0027] 2. This utility model discloses a spray plate for a liquid-cooled energy storage integrated cabinet. By setting two sets of symmetrically distributed parallel branch channels connected to the liquid inlet channel, the initial liquid inlet pressure of the two sets of branches is balanced, reducing the flow deviation caused by structural asymmetry and stabilizing the flow distribution between branches.
[0028] 3. This utility model discloses a spray plate for a liquid-cooled energy storage integrated cabinet. By adopting a design in each sub-branch channel with "larger diameter spray holes away from the liquid distribution channel", it can compensate for the pressure loss along the same sub-branch and ensure the flow balance of spray holes at different positions inside the sub-branch. Attached Figure Description
[0029] Figure 1This is a three-dimensional structural diagram of a spray plate (including spray pipes) for a liquid-cooled energy storage integrated cabinet according to this utility model.
[0030] Figure 2 This is a three-dimensional structural diagram of the reverse side of a spray plate (including spray pipe) for a liquid-cooled energy storage integrated cabinet according to the present invention.
[0031] Figure 3 This is a front view of a spray plate for a liquid-cooled energy storage integrated cabinet according to this utility model.
[0032] Figure 4 This is a rear view of a spray plate for a liquid-cooled energy storage integrated cabinet according to this utility model.
[0033] Reference numerals: 1. Plate; 2. Fluid channel; 21. Liquid inlet channel; 22. Branch channel; 221. Liquid distribution channel; 222. Sub-branch channel; 3. Spray hole; 4. Spray pipe. Detailed Implementation
[0034] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0035] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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 application and simplifying the description, and do not 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 application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0037] Example 1:
[0038] Reference Figure 1 and Figure 2The present invention discloses a spray plate for a liquid-cooled energy storage integrated cabinet, which includes a plate body 1, and a continuous fluid channel 2 is provided on the upper surface of the plate body 1.
[0039] Reference Figure 3 and Figure 4 The plate 1 has 104 spray holes 3, each of which vertically penetrates the upper and lower surfaces of the plate 1. The hole walls smoothly transition with the inner wall of the fluid channel 2 to avoid local turbulence and ensure communication with the interior of the fluid channel 2. Along the flow direction of the fluid in each branch of the fluid channel 2, the structure between different branches exhibits regular changes. Specifically, the diameter of the spray holes 3 farther from the branch inlet is larger than that of the spray holes 3 closer to the branch inlet. Furthermore, in different branches, the cross-sectional area of the sub-branch channel 222 farther from the main inlet is smaller than that of the sub-branch channel 222 closer to the main inlet. The cross-sectional area of the same sub-branch channel 222 remains constant throughout.
[0040] Reference Figure 3 The fluid channel 2 includes an inlet channel 21 and two sets of parallel branch channels 22 connected to it. The two sets of branch channels 22 are mirror-symmetrically distributed on the plate 1 with the inlet channel 21 as the axis of symmetry (symmetry error not exceeding 0.1 mm) to ensure balanced flow distribution on both sides. Each set of branch channels 22 includes two distribution channels 221 and four sub-branch channels 222. The distribution channels 221 are perpendicularly connected to the inlet channel 21, and the ends of each distribution channel 221 symmetrically branch, connecting two parallel sub-branch channels 222 (the branching angle is 180° to ensure uniform flow distribution). The liquid distribution channel 221 is arranged on the side close to the liquid inlet channel 21. It does not have any spray holes 3 and only serves to distribute the liquid. Each sub-branch channel 222 has 13 spray holes 3 evenly distributed along its length. The axis of each spray hole 3 is completely collinear with the center line of the corresponding sub-branch channel 222 (deviation ≤ 0.05 mm) to avoid local resistance differences caused by hole position offset.
[0041] Reference Figure 3Within each branch channel 22, the cross-sectional areas of different sub-branch channels 222 differ: the cross-sectional area of the sub-branch channel 222 furthest from the inlet channel 21 is smaller than that of the sub-branch channel 222 closest to the inlet channel 21. The nozzle diameters of the spray holes 3 within the same sub-branch channel 222 exhibit a gradient change. Taking a certain sub-branch as an example, the nozzle diameter of the near-end spray hole 3 closest to the distribution channel 221 is 1.2 mm, the nozzle diameter of the middle spray hole 3 is 1.5 mm, and the nozzle diameter of the end spray hole 3 furthest from the distribution channel 221 is 1.8 mm, with uniform intervals between the diameter changes. Furthermore, the 104 spray holes 3 are evenly distributed across 8 sub-branch channels 222 (4 channels per branch, 2 groups in total), with each sub-branch channel 222 strictly maintaining 13 spray holes to ensure a basic balance in flow distribution.
[0042] Reference Figure 1 and Figure 2 A spray pipe 4 is vertically connected above the middle of the liquid inlet channel 21. The spray pipe 4 is located at the center of the liquid inlet channel 21, and the axis of the spray pipe 4 is completely coincident with the center line of the liquid inlet channel 21, so as to ensure that the liquid inlet pressure is evenly transmitted at both ends of the channel.
[0043] The working process of the spray plate for the liquid-cooled energy storage integrated cabinet of this utility model is as follows:
[0044] Liquid flows into fluid channel 2 from the center of liquid inlet channel 21 through spray pipe 4, and is distributed to two sets of symmetrically distributed parallel branch channels 22. Liquid entering branch channels 22 first flows through two distribution channels 221, and each distribution channel 221 divides the liquid into two symmetrically distributed sub-branch channels 222, forming a flow structure of four parallel sub-branch channels 222 in each set of branch channels 22.
[0045] The coolant discharge within the same sub-branch channel 222 is balanced: the cross-sectional area of each sub-branch channel 222 is fixed throughout. Along the flow direction (away from the distribution channel 221), the diameter of the spray holes 3 increases sequentially: small diameter spray holes 3 at the near end, medium diameter spray holes 3 in the middle, and large diameter spray holes 3 at the end. After the coolant flows in, the flow rate is stable. The pressure of the spray holes 3 at the near end is higher, but the diameter is smaller, and the discharge volume is Q1. When the flow reaches the middle, the pressure of the middle spray holes 3 decreases slightly due to friction loss, but the diameter is medium, and the discharge volume Q2 is the same as Q1. When it reaches the end spray holes 3, the pressure further decreases, but the diameter is the largest, and the discharge volume Q3 is consistent with Q1 and Q2, thus achieving uniform discharge from each spray hole 3 within the same sub-branch.
[0046] Liquid output balance between different sub-branch channels 222: Because the two sets of branch channels 22 are symmetrically distributed, and the cross-sectional area of different sub-branch channels 222 matches their location (the cross-section of the sub-branch far from the liquid inlet channel 21 is smaller): Although the cross-sectional areas of the near sub-branch channel 222 (larger cross-section) and the far sub-branch channel 222 (smaller cross-section) are different, the design of their respective spray hole 3 follows the rule of "the diameter increases when far from the liquid distribution channel 221"; combined with the balanced flow distribution of the symmetrical structure, although the spray holes 3 of the near and far sub-branch belong to different channels, the liquid output is consistent due to the matching design parameters.
[0047] The implementation principle of this utility model is as follows: by designing the gradient of the cross-sectional area of the fluid channel and the diameter of the spray hole, the pressure loss of the fluid in the channel is balanced, ensuring that the actual liquid output of each spray hole 3 tends to be uniform.
[0048] 1. Symmetrical structural design ensures efficient flow distribution.
[0049] By using symmetrical and hierarchical design of the channel layout, flow distribution deviations are eliminated at the source, creating a balanced premise for pressure regulation.
[0050] The central liquid inlet achieves symmetrical flow distribution: the spray pipe 4 is vertically connected to the center of the liquid inlet channel 21, so that the liquid inlet pressure is evenly transmitted to the two side branches, ensuring that the pressure difference between the inlets of the left and right branches is close to zero, thus avoiding uneven flow distribution caused by liquid inlet offset from the root.
[0051] Symmetrical parallel branch layout: It adopts a structure of one inlet channel 21 and two sets of symmetrical branch channels 22, and the distribution of the distributing channels 221 and sub-branch channels 222 of each branch is completely consistent. This symmetrical design avoids flow deviation caused by differences in channel length and path from the source, and ensures that the initial flow of the two branches is balanced.
[0052] 2. Dynamic balance between pressure and flow
[0053] By using a coordinated gradient design of the cross-sectional gradient of the sub-branch channel 222 and the internal aperture gradient of the sub-branch channel 222, pressure loss along the flow path is offset, and consistent flow rate is achieved in each orifice.
[0054] The cross-sectional gradient design of the sub-branch channels 222: In each group of branch channels 22, the cross-sectional area of the sub-branch channel 222 connecting the distant stage distribution channel 221 is smaller than that of the near-stage sub-branch channel 222. This design compensates for the pressure attenuation caused by the path extension by increasing the flow resistance of the distant sub-branch channel 222, thus balancing the inlet pressure of each sub-branch channel 222. For example, the cross-sectional area of the near-stage sub-branch channel 222 is 40 mm². 2 The corresponding inlet pressure is 95 kPa, and the cross-sectional area of the far-level sub-branch channel 222 is 32 mm². 2By increasing flow resistance to compensate for the pressure attenuation caused by the extended path, the inlet pressure is maintained at 85 kPa, while the internal cross-section of each sub-branch channel 222 remains constant (e.g., 19.6 mm throughout). 2 This is to prevent static pressure collapse caused by changes in the internal cross-section.
[0055] Orifice Gradient Compensation Flow Rate in Sub-branch Channel 222: Along the fluid flow direction of sub-branch channel 222, the orifice diameter of spray holes 3 gradually increases. For example, the orifice diameter of the near-end spray hole 3 is 1.2 mm, and the orifice diameter of the far-end spray hole 3 is 1.8 mm. This creates reverse compensation with the pressure decay along the flow path. The near-end spray hole 3 is driven by high pressure (95 kPa), but due to the high pore resistance caused by the small orifice diameter, the flow rate is suppressed to 10.0 mL / s. Although the far-end spray hole 3 is driven by low pressure (45 kPa), the large orifice diameter reduces the pore resistance, and the flow rate is released to 9.9 mL / s. Through this synergistic mechanism, the flow rate difference of spray holes 3 in a single sub-branch channel 222 is ≤1%, and the standard deviation of the flow rate of all 104 spray holes 3 on the entire plate is controlled within ≤2.8%, achieving fine flow balance.
[0056] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A spray plate for a liquid-cooled energy storage integrated cabinet, characterized in that, Including the plate (1), The upper surface of the plate (1) is provided with continuous fluid channels (2); The plate (1) is provided with a plurality of spray holes (3), each of the spray holes (3) penetrating the plate (1) and communicating with the interior of the fluid channel (2); Along the flow direction of the fluid in each branch of the fluid channel (2), the diameter of the spray hole (3) away from the inlet of the branch is larger than that of the spray hole (3) near the inlet of the branch; and the cross-sectional area of the fluid channel (2) connected to the spray hole (3) away from the inlet of the branch is smaller than that of the fluid channel (2) connected to the spray hole (3) near the inlet of the branch.
2. The spray plate for a liquid-cooled energy storage integrated cabinet according to claim 1, characterized in that, The fluid channel (2) includes an inlet channel (21) and two sets of parallel branch channels (22) connected to it; the two sets of branch channels (22) have the same position structure and are symmetrically distributed on the plate (1).
3. The spray plate for a liquid-cooled energy storage integrated cabinet according to claim 2, characterized in that, Each branch channel (22) includes multiple liquid distribution channels (221) and multiple sub-branch channels (222). Each of the liquid distribution channels (221) connects to two symmetrically distributed sub-branch channels (222); The liquid distribution channel (221) is close to the liquid inlet channel (21), and the spray hole (3) is not provided on the liquid distribution channel (221); The spray holes (3) are spaced apart on the sub-branch channel (222), and the axis of each spray hole (3) is collinear with the center line of the corresponding sub-branch channel (222).
4. The spray plate for a liquid-cooled energy storage integrated cabinet according to claim 3, characterized in that, In each of the branch channels (22), the cross-sectional area of the sub-branch channel (222) that is far from the liquid inlet channel (21) is smaller than the cross-sectional area of the sub-branch channel (222) that is close to the liquid inlet channel (21).
5. The spray plate for a liquid-cooled energy storage integrated cabinet according to claim 4, characterized in that, In each of the sub-branch channels (222), the diameter of the spray hole (3) farther away from the liquid distribution channel (221) is larger than the diameter of the spray hole (3) closer to the liquid distribution channel (221).
6. The spray plate for a liquid-cooled energy storage integrated cabinet according to claim 3, characterized in that, The spray holes (3) are evenly distributed on each of the sub-branch channels (222), and the number of spray holes (3) on each of the sub-branch channels (222) is equal.
7. The spray plate for a liquid-cooled energy storage integrated cabinet according to claim 2, characterized in that, A spray pipe (4) is connected to the center of the liquid inlet channel (21).