Immersion battery thermal management box

Abstract

The utility model discloses an immersed battery thermal management box which comprises a box body, a water inlet pipe is arranged on the box body along the inner wall of the box body, and a plurality of water outlet holes are formed in the water inlet pipe; the soaking box further comprises a partition plate assembly arranged in the box body, the partition plate assembly comprises transverse plates and vertical plates which are connected together in a staggered and inserted mode, and the transverse plates are provided with channels for soaking liquid to pass through. The water inlet pipes are symmetrically arranged in the box body along the side wall, the three rows of water outlet holes are formed in the water inlet pipes, soaking liquid is guided to be diffused from the two sides of the box body to the middle of the module in a more uniform and dispersed mode, and the overflowing holes are formed in the periphery of the pull rod assembly, and the transverse holes and the vertical holes are formed in the partition plate assembly. The heat accumulation of the battery cells in the middle of the module is avoided, the uniform heat dissipation and cooling of the battery cells are realized, and the cooling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of a fully immersed liquid cold and heat management system, in particular to an immersed battery heat management box. Background Art

[0002] Full immersion liquid cooling thermal management is an emerging thermal management method for energy storage systems. It has the characteristics of good cooling effect, excellent temperature uniformity, and high cooling efficiency. It can also significantly improve the safety protection level of energy storage systems and increase the available capacity and cycle life of batteries. The application of immersion liquid cooling technology requires reasonable design and matching of the single-box liquid cooling flow field to make the flow field uniform in order to achieve the ideal uniform distribution of battery cell temperature.

[0003] At present, the water pipe layout of the immersion box for full immersion liquid cooling and heating management is relatively simple, which makes the flow field in the box unevenly distributed. Utility Model Content

[0004] The utility model aims to provide an immersion battery thermal management box, which makes the liquid cooling flow field more uniform and the temperature of the battery cells more uniformly distributed through the reasonable arrangement of the water inlet pipe and the structural improvement of the partition assembly accommodating the battery cells.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model discloses an immersion battery thermal management box, comprising a box body, wherein a water inlet pipe is arranged along the inner wall of the box body, and a plurality of water outlet holes are opened on the water inlet pipe; and further comprising a partition assembly arranged in the box body, wherein the partition assembly comprises a horizontal plate and a vertical plate which are staggered and plugged together, and spacers are attached to the horizontal plate at intervals.

[0007] The "grid" formed by the staggered horizontal and vertical plates is used to accommodate battery cells. The soaking liquid enters the box from the water inlet pipe and diffuses into each "grid" through the spacers, so as to dissipate the heat of each battery cell as evenly as possible and reduce the overall temperature gradient.

[0008] A further solution is that the vertical plate is further provided with a plurality of vertical holes, which serve as one of the channels for the soaking liquid to diffuse to each battery cell.

[0009] A further solution: the water inlet end of the water inlet pipe has a bending portion.

[0010] The entire water inlet pipe (including the bend) is provided with a number of water outlet holes along its length so that the immersion liquid can flow to different positions as dispersedly as possible. The bend is an approximately 90° elbow, through which the liquid passes and outputs the flow outward, forming a flow field in an approximately straight line direction from front to back, which is beneficial to the cooling of the front end battery cells.

[0011] A further solution: There are two water inlet pipes, which are symmetrically arranged on both side walls of the box.

[0012] Further solution: The water outlet holes on the water inlet pipe include upper discharge water holes, middle discharge water holes, and lower discharge water holes.

[0013] Further solution: The included angle between the upper discharge water hole and the middle discharge water hole is 40 - 50°, and the included angle between the middle discharge water hole and the lower discharge water hole is 40 - 50°; the water outlet direction of the middle discharge water hole is horizontal, the upper discharge water hole discharges water obliquely upward, and the lower discharge water hole discharges water obliquely downward, so that the flow field evenly diffuses from the side of the partition component.

[0014] Further solution: The number of the separator sheets is at least two, and they are attached to the cross plate at upper and lower intervals; a transverse channel for the immersion liquid to pass through is formed between adjacent separator sheets.

[0015] Further solution: It further includes a tie rod assembly arranged on the outer periphery of the partition component; a plurality of flow holes are formed in the tie rod assembly.

[0016] The tie rod assembly is used to fix the partition component and increase the structural stability of the partition component. The flow holes are evenly formed around the tie rod assembly, providing inlets and outlets for the immersion liquid to enter the inside of the module.

[0017] Further solution: It further includes a cover plate assembly covering the upper part of the partition component.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] In the present utility model, the water inlet pipes are symmetrically arranged along the side walls in the box body, and three rows of water outlet holes are formed in the water inlet pipes, guiding the immersion liquid to diffuse more evenly and dispersedly from both sides of the box body to the middle of the module. The flow holes formed around the tie rod assembly, the horizontal holes and vertical holes formed in the partition component are all beneficial to the more uniform dispersion of water flow, avoiding the heat accumulation of the battery cells in the middle of the module, realizing the uniform heat dissipation and cooling of each battery cell, and improving the cooling efficiency. Description of the Drawings

[0020] Figure 1 It is the top view of the box body in the present utility model;

[0021] Figure 2 It is the structural schematic diagram of the water inlet pipe in the present utility model;

[0022] Figure 3 It is the structural schematic diagram of the cross plate in the present utility model;

[0023] Figure 4 It is the structural schematic diagram of the partition component in the present utility model;

[0024] Figure 5 It is the assembly schematic diagram of the partition component, the cover plate component and the tie rod assembly in the present utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the tie rod assembly in the utility model;

[0026] In the figure: 1-box, 2-water inlet pipe, 21-bending part, 3-partition assembly, 31-transverse plate, 311-partition plate, 312-transverse channel, 32-vertical plate, 321-vertical hole, 4-pull rod assembly, 41-flow hole, 5-cover assembly. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0029] See also Figure 1-6 The utility model discloses an immersion battery thermal management box, including a box body 1 for containing immersion liquid, a water inlet pipe 2 is arranged along the inner wall of the box body 1, and a plurality of water outlet holes are provided on the water inlet pipe 2; the immersion battery thermal management box also includes a partition assembly 3 arranged in the box body 1, the partition assembly 3 includes a horizontal plate 31 and a vertical plate 32 staggered and plugged together, and the "square" formed by the staggered horizontal plate 31 and the vertical plate 32 is used to accommodate the battery cell monomer. The upper and lower battery cell separators 311 are attached to the surface of the horizontal plate 31, and a horizontal channel 312 is formed between the two separators 311. The vertical plate 32 is provided with vertical holes 321 arranged in rows, and the immersion liquid enters the box body 1 from the water inlet pipe 2 through the vertical holes 321 and the horizontal channel 312, and enters each "square" through the horizontal channel 312 and the vertical hole 321, so as to evenly extract the heat of each battery cell as much as possible, so as to reduce the overall temperature gradient. The transverse channel 312 and the vertical hole 321 are perpendicular to each other, which is beneficial to further form turbulent flow of the soaking liquid and helps to evenly dissipate heat.

[0030] Please continue reading Figure 2, the water inlet end of the water inlet pipe 2 has a bent portion 21. A plurality of water outlet holes are formed along the length direction of the entire water inlet pipe 2 (including the bent portion 21), so that the immersion liquid flows to different positions as dispersedly as possible. The bent portion 21 is a bent pipe with an approximate 90° angle. The liquid passes through it and outputs a flow rate outward, forming a flow field in an approximately straight line direction from front to back, which is beneficial to the cooling of the front part of the battery cells.

[0031] Furthermore, the number of the water inlet pipes 2 is two, which are symmetrically arranged on the two side walls of the box body 1, ensuring uniform cooling of the module left and right symmetrically.

[0032] Furthermore, three rows of water outlet holes are formed on the water inlet pipe 2, namely the upper row of water outlet holes, the middle row of water outlet holes and the lower row of water outlet holes. Among them, the included angle between the line connecting the upper row of water outlet holes to the center of the water inlet pipe 2 and the line connecting the middle row of water outlet holes to the center of the water inlet pipe 2 is 45°, and the included angle between the line connecting the middle row of water outlet holes to the center of the water inlet pipe 2 and the line connecting the lower row of water outlet holes to the center of the water inlet pipe 2 is 45°.

[0033] Furthermore, the water outlet direction of the middle row of water outlet holes is horizontal, the upper row of water outlet holes discharges water obliquely upward, and the lower row of water outlet holes discharges water obliquely downward, so that the flow field evenly spreads from the side of the partition assembly.

[0034] Please continue to refer to Figure 3 , the number of the separator sheets 311 is two, and they are attached to the cross plate 31 at upper and lower intervals; a transverse channel 312 for the immersion liquid to pass through is formed between adjacent separator sheets 311. The separator sheets 311 prevent adjacent battery cells from contacting each other and causing a short circuit. At the same time, because the separator sheets 311 themselves have a thickness, the transverse channel 312 can allow the immersion liquid to flow through, which is beneficial to heat dispersion.

[0035] Please continue to refer to Figure 4-6 , the present invention further includes a pull rod assembly 4 arranged on the outer periphery of the partition assembly 3; the pull rod assembly 4 includes end plates at both ends and rods fixed between the end plates, and a plurality of flow holes 41 are formed on both the end plates and the rods. The pull rod assembly 4 is used to fix the partition assembly 3 and increase the structural stability of the partition assembly 3. The flow holes 411 are evenly formed around the pull rod assembly 4, providing inlets and outlets for the immersion liquid to enter the inside of the module.

[0036] Furthermore, a cover plate assembly 5 is further included which covers the partition assembly 3 from above. The cover plate assembly 5 seals the partition assembly 3 from above.

[0037] When the present invention is in operation, the immersion liquid enters the box body 1 from the water inlet pipe 2, is evenly dispersed along both sides of the box body through the water outlet holes on the water inlet pipe 2, and then diffuses into the inside of the module through the flow holes 41 on the pull rod assembly 4. First, it enters the middle of the partition assembly 3 through the vertical holes 321 and the transverse channel 312, diffuses around the battery cells in adjacent rows, and exchanges heat with each battery cell to achieve temperature reduction and cooling.

[0038] Although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0039] Therefore, the above description is only a preferred embodiment of this application and is not used to limit the scope of implementation of this application; that is, all equivalent transformations made according to the scope of the claims of this application are within the protection scope of the claims of this application.

Claims

1. An immersion battery thermal management box, comprising a box body (1), characterized in that, The box body (1) is provided with a water inlet pipe (2) along its inner wall, and a plurality of water outlet holes are formed in the water inlet pipe (2); further comprising a partition component (3) arranged in the box body (1), the partition component (3) includes a transverse plate (31) and a vertical plate (32) which are inserted together in an alternating manner, and partition pieces (311) are attached to the transverse plate (31) at intervals.

2. The immersion battery thermal management box according to claim 1, characterized in that, A plurality of vertical holes (321) are further provided on the vertical plate (32).

3. The immersion battery thermal management box according to claim 1, characterized in that, The water inlet end of the water inlet pipe (2) has a bent portion (21).

4. The submerged battery thermal management box according to claim 1, characterized in that, The number of the water inlet pipes (2) is two, and they are symmetrically arranged on two side walls of the box body (1).

5. The immersion battery thermal management box according to claim 1, characterized in that The water outlet holes on the water inlet pipe (2) include upper discharge water holes, middle discharge water holes and lower discharge water holes.

6. The immersion battery thermal management box according to claim 4, wherein, The included angle between the upper discharge water hole and the middle discharge water hole is 40 - 50°, and the included angle between the middle discharge water hole and the lower discharge water hole is 40 - 50°.

7. The immersion battery thermal management box according to claim 4, characterized in that, The water outlet direction of the middle discharge water hole is horizontal.

8. The submerged battery thermal management box according to claim 1, characterized in that The number of the partition pieces (311) is at least two, and they are attached to the transverse plate (31) at upper and lower intervals; a transverse channel (312) for the soaking liquid to pass through is formed between adjacent partition pieces (311).

9. The immersion battery thermal management box according to claim 1, wherein, Further comprising a pull rod component (4) arranged on the outer periphery of the partition component (3); a plurality of flow-through holes (41) are formed in the pull rod component (4).

10. The submerged battery thermal management box according to claim 1, characterized in that, Further comprising a cover plate component (5) covering above the partition component (3).

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