A spray-type battery tray

Abstract

The utility model relates to a kind of spray type battery tray, it includes tray main body, multiple grooves of equal-interval distribution are set up on the tray main body, multiple groups of liquid outlet hole groups are set up on the groove, and the projection part for carrying battery module is set between two adjacent grooves.The utility model has the effect of flow balance, liquid flow smooth, even heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of battery liquid cooling technology, and in particular to a spray-type battery tray. Background Technology

[0002] In liquid-cooled energy storage systems, the battery tray, as the core carrier of the battery module, not only needs to stably support the battery to ensure structural safety, but also needs to cooperate with the liquid cooling process to achieve orderly liquid flow, thereby ensuring consistent heat dissipation of the battery.

[0003] In existing technologies, the groove distribution of traditional battery trays does not match the number of battery module rows, making it impossible to collect liquid from a single row in a directional manner; the liquid outlet holes are mostly single holes or loosely arranged, and the liquid flow is easily affected by the flatness of the bottom surface, resulting in uneven liquid cooling flow of cells in the same row; moreover, there is no flow guiding structure at the edge of the tray, and the liquid is prone to overflow, which further aggravates the flow imbalance, seriously affects the consistency of battery heat dissipation, and restricts battery life and system safety. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a spray-type battery tray with the effects of balanced flow, smooth liquid flow and uniform heat dissipation.

[0005] The above-mentioned utility model objective is achieved through the following technical solution:

[0006] A spray-type battery tray includes a tray body with multiple equally spaced grooves on the tray body, multiple sets of liquid outlet holes on the grooves, and a protrusion between two adjacent grooves for supporting battery modules.

[0007] Through the above technical solution, the tray body can not only stably support the battery module, but also guide the liquid flow through the spaced grooves, so that the liquid aggregates in the grooves of the corresponding row and flows out in an orderly manner, thereby achieving a balanced flow distribution among the cells in the row.

[0008] As a further technical solution of this utility model: the number of grooves is the same as the number of rows of battery modules, and each groove is located directly below the same row of battery modules.

[0009] Through the above technical solution, the groove corresponds to the number of rows of the battery module and is located directly below it, ensuring that the liquid is accurately applied to the cell area of ​​the corresponding row, and optimizing the flow distribution balance among the cells in that row.

[0010] As a further technical solution of this utility model: the liquid outlet hole group includes four liquid outlet holes, the four liquid outlet holes are arranged in a rectangular array, and two adjacent liquid outlet holes are arranged closely together.

[0011] Through the above technical solution, four small liquid outlet holes arranged in a rectangular array and closely spaced together allow the liquid to spread outwards with the help of surface tension when it flows out, forming a coordinated liquid flow in the corresponding row of spray areas. The liquid flow in the central area naturally falls off under the action of gravity, reducing the uncertainty of liquid flow in a single row caused by uneven bottom surface.

[0012] As a further technical solution of this utility model: the center-to-center distance between two adjacent outlet holes in each group of outlet holes is greater than the diameter of a single outlet hole but less than twice that diameter.

[0013] Through the above technical solution, the spacing design utilizes surface tension to make the liquid flow of adjacent liquid outlet holes form a spread range that is suitable for the distribution of the corresponding battery cells. This avoids the accumulation of liquid due to excessively small spacing, and also prevents the formation of covering gaps due to excessively large spacing, thereby ensuring the uniformity and coverage of liquid cooling in the row.

[0014] As a further technical solution of this utility model: the protrusion is in the shape of a truncated trapezoid, and the protrusion includes a horizontal supporting surface and an arc-shaped transition surface connecting the two sides of the supporting surface.

[0015] Through the above technical solution, the truncated pyramidal protrusion uses a horizontal support surface to stably support the battery module, and the arc-shaped transition surfaces on both sides can guide the coolant to flow smoothly, avoiding the formation of dead corners where coolant accumulates at the edge of the protrusion.

[0016] As a further technical solution of this utility model: the angle between the arc-shaped transition surface and the surface of the tray body is 30° to 60°.

[0017] Through the above technical solution, the angle design between the arc transition surface and the main surface of the tray can guide the liquid to flow smoothly through the protrusion and into the corresponding groove, avoiding the stagnation of liquid flow in the row due to poor transition, and ensuring the orderly convergence of liquid.

[0018] As a further technical solution of this utility model: the tray body is provided with flow guide protrusions at both sides of the edge along the extension direction of the groove.

[0019] Through the above technical solution, the flow guide protrusions on both sides constrain the liquid flow range, prevent liquid from overflowing from the edge and affecting the amount of liquid aggregation in the corresponding groove, and ensure the balanced flow distribution effect between the cells.

[0020] In summary, this utility model has at least one of the following beneficial technical effects:

[0021] 1. This utility model discloses a spray-type battery tray, which achieves stable support for the battery module and balanced flow distribution among cells in the same row through the coordinated design of the groove, liquid outlet group and protrusion of the tray body.

[0022] 2. This utility model discloses a spray-type battery tray, which uses rectangular arrays of appropriately spaced liquid outlet holes to achieve a coordinated liquid flow through surface tension, reducing the uncertainty of flow caused by uneven bottom surface.

[0023] 3. This utility model discloses a spray-type battery tray, which achieves smooth convergence of liquid into the groove through the structural design of the trapezoidal protrusion and the flow guide protrusion, ensuring a stable effect of balanced discharge flow. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a spray-type battery tray according to this utility model.

[0025] Figure 2 This is a front view of a spray-type battery tray according to the present invention.

[0026] Figure 3 This is a side view of a spray-type battery tray according to the present invention.

[0027] Figure 4 This is a side view of a spray-type battery tray for placing battery modules according to this utility model.

[0028] Figure 5 This is a right view of a spray-type battery tray for placing battery modules according to this utility model.

[0029] Reference numerals: 1. Tray body; 2. Groove; 3. Liquid outlet hole group; 31. Liquid outlet hole; 4. Protrusion; 41. Support surface; 42. Arc-shaped transition surface; 5. Battery module; 6. Guide boss. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] Example:

[0034] Reference Figure 1 The present invention discloses a spray-type battery tray, which includes a tray body 1. The tray body 1 has 13 equally spaced grooves 2. The surface of the grooves 2 is distributed with 8 sets of liquid outlet holes 3 along the column direction. A protrusion 4 is provided between adjacent grooves 2 for supporting battery modules 5.

[0035] Reference Figure 4 and Figure 5 The number of grooves 2 is consistent with the number of rows of battery modules 5, corresponding to a total of 13 rows of battery modules 5, and each groove 2 is precisely located directly below the same row of battery modules 5; the battery modules 5 are arranged in 4 columns, and each battery module contains several cells; in each column, each end of a single cell corresponds to a set of liquid outlet holes 3, that is, every two sets of liquid outlet holes 3 correspond to one cell, ensuring that the heat and coolant of each row of cells can be collected directionally by dedicated grooves.

[0036] Reference Figure 1 and Figure 2 The outlet hole group 3 consists of four outlet holes 31 arranged in a 2×2 rectangular array. In each outlet hole group 3, the center-to-center distance between adjacent outlet holes 31 is greater than the diameter of a single outlet hole 31 but less than twice that diameter. This allows the coolant to fuse into a continuous liquid film after flowing out, thanks to surface tension, achieving gapless coverage of the battery surface. For example, when the diameter of the outlet hole 31 is set to 3mm and the center-to-center distance between adjacent holes is set to 4.5mm, the coolant will flow out from the four holes. The liquid flow from each hole will diffuse in all directions under the action of surface tension (diffusion radius of about 2.5mm). The diffusion ranges of adjacent holes overlap (overlap width of about 0.5mm), eventually fusing into a complete and continuous liquid film on the battery surface. This avoids excessive liquid accumulation due to too small a spacing (e.g., 2.5mm) and gaps due to too large a spacing (e.g., 6.5mm), thus achieving seamless coverage of the battery surface.

[0037] Reference Figure 3The protrusion 4 is in the shape of a trapezoid, integrating a horizontal support surface 41 and an arc-shaped transition surface 42 connecting its two sides; the angle between the arc-shaped transition surface 42 and the surface of the tray body 1 is 30° to 60°. The selection of this angle range is based on the flow characteristics of the coolant and the structural compatibility. If the included angle is less than 30°, the arc transition surface 42 will be too gentle, and the flow rate of the coolant will decrease when it flows through it. Due to gravity, liquid will easily accumulate at the connection between the arc transition surface 42 and the support surface 41, and it will not be able to flow into the groove 2 quickly. If the included angle is greater than 60°, the arc transition surface 42 will be too steep. When the coolant flows through it, it will splash due to excessive acceleration caused by gravity. Some liquid may detach from the transition surface and splash directly onto the edge of the tray body 1 or adjacent areas, and it will not be able to accurately flow into the groove 2. An included angle of 30° to 60° can balance the flow rate and flow direction stability. It can guide the coolant to flow smoothly along the transition surface at an appropriate speed, and avoid liquid accumulation caused by too gentle an angle or splashing caused by too steep an angle. This ensures that the liquid flows into the groove 2 efficiently, providing a basis for subsequent flow balance.

[0038] Reference Figure 1 The tray body 1 has symmetrical guide protrusions 6 on both sides of the extension direction of the groove 2 to constrain the flow range of the coolant and prevent it from overflowing from the edge of the tray.

[0039] The working process of this utility model is as follows:

[0040] The coolant enters from the top of the system, first flowing over the surface of the battery module 5 and absorbing heat, then flowing downwards along the battery module 5 to the tray area. Upon reaching the tray, the coolant flows naturally along the arc-shaped transition surface 42 of the protrusion 4 into the adjacent groove 2, and the coolant corresponding to the same row of battery modules 5 gradually aggregates in the corresponding groove 2.

[0041] When the coolant in the groove 2 accumulates to a certain amount, it flows out through the outlet hole group 3. The coolant flowing out from the outlet hole 31 diffuses and merges into a continuous liquid film under the action of surface tension. When the liquid film expands to the central area, it forms a liquid column that falls vertically due to gravity, avoiding the flow path being affected by the bottom surface condition.

[0042] During this process, the guide boss 6 prevents the coolant from overflowing to the edge of the tray, ensuring that all the liquid participates in the circulation; the falling coolant eventually enters the liquid cooling unit for temperature control, and then is transported back to the top of the system to complete one liquid cooling cycle.

[0043] The implementation principle of this utility model is as follows: through the cooperation of various structures, the battery can be stably supported while the coolant can flow evenly to ensure heat dissipation. Specifically, the horizontal support surface 41 of the protrusion 4 stably supports the battery module 5, preventing the battery from shaking and affecting cooling; the inclination angle of the arc-shaped transition surface 42 on both sides is between 30° and 60°. This angle guides the coolant to flow smoothly into the adjacent groove 2, preventing liquid splashing due to excessive steepness and liquid accumulation in corners due to excessive gentleness. The number of grooves 2 is the same as the number of rows of battery modules 5, with each groove 2 directly below the same row of battery modules 5. This allows all the coolant flowing down from this row of battery modules 5 to collect in the corresponding groove 2 for convenient centralized processing. The coolant outlet group 3 on the groove 2 consists of four small outlet holes 31 arranged in a rectangular, close-knit pattern. The distance between adjacent outlet holes 31 is larger than the diameter of a single outlet hole 31, but less than twice its diameter. This arrangement utilizes the surface tension of the liquid to allow the coolant flowing from the outlet holes 31 to converge and merge into a continuous liquid film in the center, eventually flowing down naturally from the center due to gravity. This avoids the problem of the liquid not knowing where to flow due to unevenness on the bottom surface of the tray body 1. In addition, the guide protrusions 6 on both sides of the tray body 1 can block the coolant and prevent it from flowing out from the edges, ensuring that all liquids can flow and circulate in an orderly manner in the groove 2, ultimately achieving a balance of coolant flow among the battery modules 5 in the same row, resulting in more uniform heat dissipation.

[0044] 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-type battery tray, characterized in that, The device includes a tray body (1), on which a plurality of grooves (2) are provided at equal intervals, and a plurality of liquid outlet holes (3) are provided on the grooves (2), and a protrusion (4) is provided between two adjacent grooves (2) for supporting the battery module (5).

2. The spray-type battery tray according to claim 1, characterized in that, The number of grooves (2) is the same as the number of rows of battery modules (5), and each groove (2) is located directly below the battery modules (5) in the same row.

3. A spray-type battery tray according to claim 1, characterized in that, The liquid outlet hole group (3) includes four liquid outlet holes (31), which are arranged in a rectangular array, and two adjacent liquid outlet holes (31) are arranged closely together.

4. A spray-type battery tray according to claim 3, characterized in that, The center-to-center distance between two adjacent outlet holes (31) in each group of outlet holes (3) is greater than the diameter of a single outlet hole (31) but less than twice that diameter.

5. A spray-type battery tray according to claim 1, characterized in that, The protrusion (4) is in the shape of a trapezoid, and the protrusion (4) includes a horizontal support surface (41) and an arc-shaped transition surface (42) connecting the two sides of the support surface (41).

6. A spray-type battery tray according to claim 5, characterized in that, The angle between the arc-shaped transition surface (42) and the surface of the tray body (1) is 30° to 60°.

7. A spray-type battery tray according to claim 1, characterized in that, The tray body (1) is provided with flow guide protrusions (6) on both sides of the extension direction of the groove (2).

Images