A runner plate, cooling plate and battery pack
By designing a fluid distribution zone, a flow guiding zone, and a heat exchange zone on the flow channel plate, and using a specific structure to suppress eddies, the problems of uneven cooling and eddies are solved, resulting in a more efficient cooling effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI XUANYI NEW ENERGY DEV CO LTD
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-04
AI Technical Summary
Existing cooling channel designs suffer from uneven cooling and vortex phenomena, resulting in low cooling efficiency. In particular, vortexes are easily generated in the channel turning area, increasing channel resistance and weakening the overall heat exchange efficiency.
Design a flow channel plate comprising a fluid distribution zone, a flow guiding zone, and a heat exchange zone. Employ strip-shaped partition plates, frustum-shaped protrusions, and polygonal island structures to suppress eddies, improve the uniform distribution and flow control of the coolant, and increase the heat exchange area.
It achieves uniformity and consistency in cooling effect, reduces eddy current generation, lowers flow resistance, improves cooling efficiency, and enhances overall cooling performance.
Smart Images
Figure CN224595591U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cooling, and more particularly to a flow channel plate, a cooling plate, and a battery pack. Background Technology
[0002] As the power density of power batteries continues to increase, the market demands increasingly stringent fast-charging performance. As a core cooling component of the power battery thermal management system, the cooling plate faces greater challenges in terms of cooling area, cooling rate, and flow channel structure design.
[0003] Currently, most mainstream cooling channel designs employ traditional forms such as serpentine channels and harmonica tube channels. These types of channels typically distribute the cooling medium along a fixed path, which can easily lead to uneven cooling effects between the inlet and outlet areas. Furthermore, eddies are prone to form in the channel's turning areas, which not only increase channel resistance but also reduce overall heat exchange efficiency. Utility Model Content
[0004] In a first aspect, embodiments of this application provide a flow channel plate for a cooling plate. The flow channel plate has a groove, which includes a fluid distribution area, a flow guiding area, and a heat exchange area. The fluid distribution area is disposed at one end of the flow channel plate along a first direction and includes a plurality of strip-shaped partition plates. The flow guiding area includes a plurality of frustum-shaped protrusions. The heat exchange area includes a plurality of polygonal islands.
[0005] The flow channel plate provided in this application improves the consistency of cooling effect at both ends near the inlet and far from the outlet by setting a fluid distribution area, a flow guiding area and a heat exchange area on the flow channel plate. At the same time, it effectively suppresses the generation of eddies, reduces flow resistance and improves cooling efficiency.
[0006] In some embodiments, the thickness of the strip partition plate is set to 1.5 to 2.5 times the thickness of the flow channel plate without the grooved portion; and / or, the size of the fluid distribution area in the first direction is 1.5 to 2.5 times the diameter of the inlet.
[0007] In some embodiments, the draft angle of the frustum-shaped protrusion ranges from 5 to 15°; and / or, the diameter of the lower bottom surface of the frustum-shaped protrusion is 2 to 5 times the thickness of the strip-shaped partition plate.
[0008] In some embodiments, the heat exchange zone includes a vortex suppression zone and a smooth fluid zone. The vortex suppression zone includes multiple triangular islands for suppressing vortices caused by fluid flowing from the guide zone to the heat exchange zone. The smooth fluid zone includes multiple polygonal islands for exchanging heat between the fluid suppressed by the vortex suppression zone and the polygonal islands.
[0009] In some embodiments, the area of the upper base of the triangular island is 0.8 to 1.2 times the area of the upper base of the frustum-shaped protrusion; and / or, the area of the lower base of the triangular island is 0.8 to 1.2 times the area of the lower base of the frustum-shaped protrusion.
[0010] In some embodiments, the area of the heat exchange zone is at least 80% of the area of the flow channel plate; and / or, the area of the plurality of polygonal islands is 20 to 30% of the area of the heat exchange zone.
[0011] In some embodiments, the system further includes: a fluid concentration zone and a confluence zone, wherein the fluid concentration zone is disposed at the other end of the flow channel plate along the first direction, and the confluence zone is disposed between the heat exchange zone and the fluid concentration zone, and the confluence zone includes a plurality of frustum-shaped protrusions; and / or, the fluid concentration zone includes a plurality of strip-shaped partition plates.
[0012] In some embodiments, the fluid distribution area, the flow guiding area, the heat exchange area, the flow convergence area, and the fluid concentration area are integrally formed.
[0013] Secondly, this application provides a cooling plate, comprising:
[0014] Heat-conducting plate;
[0015] Such as any of the flow channel plates in the first aspect;
[0016] The inlet is used to supply fluid from the cooling system to the fluid distribution area of the flow channel plate;
[0017] The outlet is used to discharge fluid from the fluid concentration area of the flow channel plate to the cooling system.
[0018] In some embodiments, the heat-conducting plate and the flow channel plate are fixed by sheet metal stamping or die casting to form a closed space.
[0019] Thirdly, this application provides a battery pack including battery cells and a cooling plate as described in any of the second aspects. Attached Figure Description
[0020] Figure 1 A schematic diagram of a cooling plate provided according to some embodiments of this application is shown. Figure 1 ;
[0021] Figure 2 A schematic diagram of a flow channel plate provided according to some embodiments of this application is shown. Figure 1 ;
[0022] Figure 3 Show Figure 1 Enlarged view of section A;
[0023] Figure 4 A schematic diagram of a cooling plate provided according to some embodiments of this application is shown. Figure 2 ;
[0024] Figure 5 A cross-sectional view is shown of a cooling plate provided according to some embodiments of this application, wherein a battery module is disposed thereon;
[0025] Figure 6 A cross-sectional view along the BB direction of a strip partition provided according to some embodiments of this application is shown;
[0026] Figure 7 This illustrates the flow field cloud of a flow channel plate provided according to some embodiments of this application. Figure 1 ;
[0027] Figure 8 This illustrates the flow field cloud of a flow channel plate provided according to some embodiments of this application. Figure 2 . Detailed Implementation
[0028] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.
[0029] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0030] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model 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. Therefore, they should not be construed as limitations on the utility model.
[0031] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0032] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.
[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0034] refer to Figure 1 , Figure 4 and Figure 5 This application provides a cooling plate 0, including: a heat-conducting plate 2; a flow channel plate 3; a water inlet 4 for supplying fluid (e.g., coolant) from a cooling system to the flow channel plate 3; and a water outlet 1 for discharging fluid from the flow channel plate 3 back to the cooling system. The cooling plate 0 is cooled by coolant from a cooling system (e.g., a vehicle cooling system or a battery pack cooling system), thereby allowing the battery module 100 (e.g., a battery module 100 disposed above the cooling plate 0) to cool down. Figure 5 The temperature of the battery pack (which may include multiple battery modules 100) decreases, thereby cooling the battery pack and maintaining optimal performance.
[0035] For example, the guide plate is provided with mounting holes corresponding to the inlet 4 and the outlet 1, respectively, through which the heat-conducting plate 2 is fixed to the inlet 4 and the outlet 1, respectively. For example, the heat-conducting plate 2 and the flow channel plate 3 can be fixed by welding (e.g., brazing) to form a closed space.
[0036] The following combination Figures 2-4 and Figure 6 The flow channel plate 3 of this application is described in detail.
[0037] refer to Figure 2 This application provides a flow channel plate 3 for a cooling plate 0. The flow channel plate 3 has a groove 30, which includes a fluid distribution area 31, a flow guiding area 32, and a heat exchange area 33. The fluid distribution area 31 is disposed along a first direction (e.g., along a first direction). Figure 2 and Figure 6The fluid distribution area 31 includes multiple strip-shaped partitions 311 at one end (in the X direction shown) for uniformly distributing the fluid (coolant) supplied from the inlet 4. In other words, the multiple strip-shaped partitions 311 allow the coolant supplied from the inlet 4 to quickly fill the entire fluid distribution area 31, resulting in a more uniform fluid distribution and preventing uneven cooling effects, such as more fluid near the inlet 4 and less fluid further away from the inlet 4.
[0038] In some embodiments, the thickness of the strip partition 311 (e.g. Figure 6 As shown) the thickness of the portion of the flow channel plate 3 without the groove 30 is set (e.g. Figure 5 The thickness is 1.5 to 2.5 times that of the Z-direction shown. This dimensional setting facilitates manufacturing while ensuring strength. In this embodiment, the thickness of the strip partition plate 311 is set to twice the thickness of the portion of the flow channel plate 3 without the groove 30. In some embodiments, the thickness of the portion of the flow channel plate 3 without the groove 30 is equal to or similar to the thickness of the heat-conducting plate 2, thereby reducing, for example, defects during welding.
[0039] In some embodiments, the fluid distribution area 31 in a first direction (e.g.) Figure 2 and Figure 6 The dimension in the X direction (as shown) is 1.5 to 2.5 times the diameter of the inlet 4. In this embodiment, the dimension of the fluid distribution area 31 in the first direction is twice the diameter of the inlet 4.
[0040] refer to Figure 2 and combined Figure 5 As shown, the flow guiding zone 32 includes multiple frustum-shaped protrusions 321, which are used to guide the fluid, after being evenly distributed by the fluid distribution zone 31, into more fluid streams with controllable flow rates, further improving the consistency of the cooling effect. The upper bottom surface area of the frustum-shaped protrusions 321 facing the heat conduction plate 2 is smaller than the lower bottom surface area away from the heat conduction plate 2, i.e., narrower at the top and wider at the bottom. This design reduces the contact space with the heat conduction plate 2 while maximizing the fluid area and increasing the heat exchange area to achieve a better heat exchange effect. The specific dimensions of the frustum-shaped protrusions 321 can be determined according to the simulation requirements.
[0041] In some embodiments, the draft angle of the frustum-shaped protrusion 321 is in the range of 5 to 15°. This configuration can increase the capacity of the coolant while reducing the flow resistance.
[0042] In some embodiments, the diameter of the lower bottom surface of the frustum-shaped protrusion 321 is 2 to 5 times the thickness of the strip-shaped partition plate 311.
[0043] The heat exchange zone 33 includes multiple polygonal islands 331, which are used to exchange heat between the fluid guided by the flow guiding zone 32 and the polygonal islands 331, thereby reducing the temperature of the cooling plate 0. The shape of the polygonal islands 331 can be designed based on the heat exchange requirements of the battery module 100 and the cells, and further designed based on thermal simulation. By setting the polygonal island structure 331, the generation of eddy currents is reduced, the flow resistance of the cooling plate 0 is lowered, and the design of being narrow at the top and wide at the bottom maximizes the flow area and heat exchange area while ensuring structural strength.
[0044] In some embodiments, the heat exchange zone 33 includes a vortex suppression zone and a smooth flow zone. The vortex suppression zone includes a plurality of triangular islands 332 for suppressing eddy currents caused by fluid flowing from the guide zone 32 to the heat exchange zone 33. Figure 3 The vortex region shown can be determined based on computational fluid dynamics (CFD) simulation results. The smooth fluid region includes multiple polygonal islands 331, which are used to exchange heat between the fluid suppressed by the vortex suppression region and the polygonal islands 331.
[0045] In some embodiments, the area of the upper base of the triangular island 332 is 0.8 to 1.2 times the area of the upper base of the frustum-shaped protrusion 321; and / or, the area of the lower base of the triangular island 332 is 0.8 to 1.2 times the area of the lower base of the frustum-shaped protrusion 321. By setting the base area of the triangular island 332 to be similar in size to the base area of the frustum-shaped protrusion 321, the generation of eddies can be further suppressed.
[0046] In some embodiments, the area of the heat exchange zone 33 is at least 80% of the area of the flow channel plate 3 to improve the cooling effect.
[0047] In some embodiments, the area of the plurality of polygonal islands 331 accounts for 20 to 30% of the area of the heat exchange zone 33 in order to improve the cooling effect.
[0048] In some embodiments, the flow channel plate 3 further includes a fluid concentration zone 35 and a confluence zone 34. The fluid concentration zone 35 is located at the other end of the flow channel plate 3 along a first direction. The confluence zone 34 is located between the heat exchange zone 33 and the fluid concentration zone 35, and includes multiple frustum-shaped protrusions 321 similar to the guide zone 32, for converging the fluid after heat exchange in the heat exchange zone 33 into fewer streams of fluid with controllable flow rates. The fluid concentration zone 35 includes multiple strip-shaped partitions 311 similar to the fluid distribution zone 31, for concentrating the fluid after confluence in the confluence zone 34 into fewer streams of fluid for discharge to the outlet 1. By providing the fluid concentration zone 35 and the confluence zone 34, the fluid can be discharged from the outlet 1 more smoothly, avoiding excessively high flow rates caused by the fluid after heat exchange in the heat exchange zone 33 being directly discharged to the outlet 1, which would increase flow resistance and reduce cooling efficiency.
[0049] For example, the coolant supplied from the inlet 4 is distributed into N streams of fluid in the fluid distribution zone 31, then guided into 3N smaller streams with controllable flow rates in the guide zone 32, then formed into 10N streams of fluid in the heat exchange zone 33, then merged into 3N larger streams with controllable flow rates in the confluence zone 34, then concentrated into N streams of fluid in the fluid concentration zone 35, and finally discharged into the cooling system from the outlet 1.
[0050] In some embodiments, the fluid distribution area 31, the flow guiding area 32, the heat exchange area 33, the flow confluence area 34, and the fluid concentration area 35 are integrally formed to form the flow channel plate 3. Exemplarily, the flow channel plate 3 can be formed by sheet metal stamping or die casting.
[0051] The flow channel plate 3 and cooling plate 0 provided in this application, by setting a fluid distribution area 31, a flow guiding area 32, and a heat exchange area 33 on the flow channel plate 3, improve the consistency of the cooling effect in the inlet and outlet areas, while effectively suppressing the generation of eddies, reducing flow resistance, and improving cooling efficiency. (Reference) Figure 7 and Figure 8 The areas shown on the flow channel plate 3 and the two ends of the inlet and outlet (e.g.) Figure 8 The flow resistance values at the near and far ends (shown) indicate that the flow resistance is relatively consistent, allowing the coolant to flow more smoothly and steadily through the flow channel plate 3, thereby improving cooling efficiency.
[0052] This application also provides a battery pack, including battery cells and any of the cooling plates 0 in the above embodiments.
[0053] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.
Claims
1. A flow channel plate for a cooling plate, characterized in that, The flow channel plate is provided with a groove, the groove including: a fluid distribution area, a flow guiding area and a heat exchange area, wherein the fluid distribution area is disposed at one end of the flow channel plate along a first direction and the fluid distribution area includes a plurality of strip-shaped partition plates; the flow guiding area includes a plurality of frustum-shaped protrusions; and the heat exchange area includes a plurality of polygonal islands.
2. The flow channel plate as described in claim 1, characterized in that, The thickness of the strip-shaped partition plate is set to 1.5 to 2.5 times the thickness of the flow channel plate without the groove portion; and / or, the size of the fluid distribution area in the first direction is 1.5 to 2.5 times the diameter of the inlet; and / or, the draft angle of the frustum-shaped protrusion is in the range of 5 to 15°; and / or, the diameter of the lower bottom surface of the frustum-shaped protrusion is 2 to 5 times the thickness of the strip-shaped partition plate.
3. The flow channel plate as described in claim 1, characterized in that, The heat exchange zone includes a vortex suppression zone and a smooth fluid zone. The vortex suppression zone includes multiple triangular islands; and / or, the smooth fluid zone includes multiple polygonal islands.
4. The flow channel plate as described in claim 3, characterized in that, The area of the upper base of the triangular island platform is 0.8 to 1.2 times the area of the upper base of the frustum-shaped convex part; and / or, the area of the lower base of the triangular island platform is 0.8 to 1.2 times the area of the lower base of the frustum-shaped convex part.
5. The flow channel plate as described in claim 1, characterized in that, The area of the heat exchange zone is at least 80% of the area of the flow channel plate; and / or, the area of the plurality of polygonal islands is 20-30% of the area of the heat exchange zone.
6. The flow channel plate as described in claim 1, characterized in that, Also includes: The fluid concentration area and the confluence area are provided. The fluid concentration area is located at the other end of the flow channel plate along the first direction. The confluence area is located between the heat exchange area and the fluid concentration area. The confluence area includes a plurality of frustum-shaped protrusions. And / or, the fluid concentration area includes a plurality of strip-shaped partition plates.
7. The flow channel plate as described in claim 6, characterized in that, The fluid distribution area, the flow guiding area, the heat exchange area, the flow confluence area, and the fluid concentration area are integrally formed.
8. A cooling plate, characterized in that, include: Heat-conducting plate; The flow channel plate as described in any one of claims 1 to 7; The inlet is used to supply fluid from the cooling system to the fluid distribution area of the flow channel plate; The outlet is used to discharge fluid from the fluid concentration area of the flow channel plate to the cooling system.
9. The cooling plate as described in claim 8, characterized in that, The heat-conducting plate and the flow channel plate are fixed together by sheet metal stamping or die casting to form a closed space.
10. A battery pack comprising battery cells, characterized in that, Includes the cooling plate as described in claim 8 or 9.