Battery heat dissipation base plate and battery module

Abstract

This application belongs to the field of battery heat dissipation technology, and relates to a battery heat dissipation base plate and a battery module. The base plate includes: a plate body, including a first end plate connecting portion, a second end plate connecting portion, and multiple heat dissipation plate portions. The first end plate connecting portion and the second end plate connecting portion are parallel and both extend along a first direction. Each heat dissipation plate portion extends along a second direction perpendicular to the first direction and is connected between the first end plate connecting portion and the second end plate connecting portion. The multiple heat dissipation plate portions are spaced apart in the first direction, and the gaps between adjacent heat dissipation plate portions form heat dissipation channels. Each heat dissipation channel has a vent on the first end plate connecting portion and the second end plate connecting portion. Multiple cooling fans are also included, with one cooling fan installed at each vent on the first end plate connecting portion. The cooling fans are used to introduce external air into the heat dissipation channel or exhaust air from the heat dissipation channel, thereby circulating air within the heat dissipation channel. The device of this application solves the technical problems of heat dissipation for individual battery cells and heat dissipation cost.

Description

Technical Field

[0001] This application belongs to the field of battery heat dissipation technology, specifically, it relates to a battery heat dissipation base plate and a battery module. Background Technology

[0002] With the accelerated transformation of the global energy structure, sodium-ion batteries (sodium batteries) have shown strong market demand in the field of new energy storage due to their abundant resources, cost advantages and wide temperature range characteristics.

[0003] However, existing battery module heat dissipation solutions face several challenges and limitations. Specifically, firstly, there are significant temperature differences between individual cells within a battery module, potentially leading to uneven battery performance and impacting the overall stability and lifespan of the energy storage system. Secondly, heat dissipation components are expensive; existing systems often require costly materials and complex designs, increasing overall costs and limiting the application of sodium-ion batteries in cost-sensitive markets. Thirdly, installation and maintenance are challenging; current heat dissipation solutions present complex and difficult installation and maintenance processes, increasing operational costs and the risk of system failure.

[0004] To address the aforementioned shortcomings, there is an urgent need to design a novel heat dissipation technology for sodium-ion batteries to solve technical problems such as high temperature differences per cell, high cost of heat dissipation components, and difficulties in installation and maintenance. Utility Model Content

[0005] The purpose of this application is to provide a battery heat dissipation base plate to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] This application provides a battery heat dissipation base plate, comprising: a plate body, including a first end plate connecting portion, a second end plate connecting portion, and a plurality of heat dissipation plate portions, wherein the first end plate connecting portion and the second end plate connecting portion are parallel and both extend along a first direction, and each heat dissipation plate portion extends along a second direction perpendicular to the first direction and is connected between the first end plate connecting portion and the second end plate connecting portion, the plurality of heat dissipation plate portions are spaced apart in the first direction, and the gap between adjacent heat dissipation plate portions forms a heat dissipation channel, each heat dissipation channel having a vent on the first end plate connecting portion and the second end plate connecting portion; and a plurality of cooling fans, wherein a cooling fan is installed at each vent of the first end plate connecting portion, and the cooling fans are used to introduce external air into the heat dissipation channel or exhaust air in the heat dissipation channel to allow airflow in the heat dissipation channel.

[0008] In some technical solutions of this application, the cooling fan includes multiple intake fans and multiple exhaust fans, which are arranged alternately along a first direction.

[0009] Further, the intake fan is disposed outside the heat dissipation channel, and the exhaust fan is disposed inside the heat dissipation channel.

[0010] In some technical solutions of the present application, each heat dissipation fan includes a fan and a mounting frame. The fan is connected to the first end plate connecting portion through the mounting frame. The fan has a fan air inlet arranged in the third direction and a fan air outlet arranged in the second direction. The third direction is perpendicular to the first direction and the second direction, and the fan air outlet faces the corresponding ventilation port.

[0011] In some technical solutions of the present application, the mounting frame includes a base portion and a side wall portion. The fan is mounted on the base portion. The base portion is provided with a base ventilation port corresponding to the fan air inlet. The side wall portion is disposed around the periphery of the fan. The side wall portion is in a U-shape, and the open side of the U-shape is arranged corresponding to the fan air outlet. The two ends of the U-shape are connected to the side walls of the first end plate connecting portion.

[0012] Further, the base portion is further provided with a plurality of support feet for supporting the heat dissipation fan.

[0013] Further, the plurality of support feet are respectively arranged at the edge corners of the base portion. The base ventilation port is arranged in the middle of the base portion. The two ends of the U-shape of the side wall portion are respectively provided with mounting holes for connecting the mounting frame to the side walls of the first end plate connecting portion.

[0014] In some technical solutions of the present application, the plate body further includes a plurality of support portions. The plurality of support portions are respectively connected to the plurality of heat dissipation plate portions. Each support portion is used to support one heat dissipation fan.

[0015] In some technical solutions of the present application, the plate body further includes a plurality of fixing portions for fixing the plate body itself. The plurality of fixing portions are connected to the side of the first end plate connecting portion facing away from the second end plate connecting portion at intervals in the first direction.

[0016] In some technical solutions of the present application, the width of the heat dissipation fan is equal to the width between two adjacent heat dissipation plate portions, and the height of the heat dissipation fan is less than the height of the heat dissipation plate portion.

[0017] In some technical solutions of the present application, the heat dissipation fan further includes a fan electronic control system. The fan electronic control system is connected to the fan and is used to separately control the opening and closing of the plurality of intake fans and the plurality of exhaust fans.

[0018] The present application further provides a battery module, including the above-mentioned battery heat dissipation bottom plate.

[0019] Furthermore, the battery module includes a sodium battery, with its two ends connected to a first end face and a second end face respectively. The lower end face of the sodium battery is mounted on a heat sink, and the upper end face of the sodium battery can be stacked with another heat sink mounted on the sodium battery. The heat from the sodium battery is conducted to the heat sink and is carried out of the plate by multiple intake fans and multiple exhaust fans that drive air to flow in the heat dissipation channel.

[0020] This application provides a battery heat dissipation base plate with a simple structure. The heat dissipation base plate uses a fan to drive the airflow through the heat dissipation channels, allowing the airflow to remove heat from the plate. The fan is easy to replace and maintain, and multiple heat dissipation channels can be set to achieve multi-channel large-area heat dissipation. At the same time, it can be easily installed in stacked battery modules to achieve simultaneous heat dissipation from the top and bottom of the sodium battery, reducing the temperature difference between the cells inside the sodium battery. The number of fans that can be turned on can also be determined according to the temperature requirements of the cells, providing a more efficient, economical and reliable heat dissipation structure for sodium batteries. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the axial structure of the battery heat dissipation base plate provided in an embodiment of this application.

[0022] Figure 2 for Figure 1 A schematic diagram of the axial structure of the plate provided in the embodiments of this application.

[0023] Figure 3 for Figure 2 A front view structural diagram of the plate provided in the embodiment of this application.

[0024] Figure 4 for Figure 2 A schematic diagram of the right side structure of the plate provided in the embodiment of this application.

[0025] Figure 5 for Figure 2 A schematic diagram of the left-side structure of the plate provided in the embodiment of this application.

[0026] Figure 6 for Figure 1 A schematic diagram of the axial structure of the cooling fan provided in the embodiments of this application.

[0027] Figure 7 for Figure 6 An exploded view of the cooling fan provided in the embodiments of this application.

[0028] Figure 8 for Figure 6 A front view of the cooling fan provided in the embodiment of this application.

[0029] Figure 9 for Figure 6A bottom view of the cooling fan provided in the embodiment of this application.

[0030] Figure 10 This is a schematic diagram of the airflow direction within the heat dissipation channel of the battery heat dissipation base plate provided in the embodiments of this application.

[0031] Figure 11 This is a schematic diagram of the installation structure of the battery heat dissipation base plate provided in the embodiment of this application in the battery module.

[0032] The following are the labels in the diagram: 1. Plate body; 11. First end plate connection; 111. Ventilation port; 12. Second end plate connection; 13. Heat sink plate; 131. Heat dissipation channel; 14. Fixing part; 15. Support part; 2. Cooling fan; 2A. Inlet fan; 2B. Outlet fan; 21. Fan; 211. Fan inlet; 212. Fan outlet; 22. Mounting frame; 221. Base; 2211. Base ventilation port; 2212. Support leg; 222. Side wall. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that the terms "center", "side wall", "bottom", "length", "width", "height", "upper", "lower", "end", "inner", "outer", "parallel", "vertical", "horizontal", "top", "bottom", "between", "one end", "end face", "plane", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to welded connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is directly connected to the second feature, or that the first feature is indirectly connected through an intermediate medium. Furthermore, "above," "on top of," and "over" 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. "Below," "below," and "under" 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.

[0038] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0039] In existing battery modules, there are significant temperature differences between cells in different sodium batteries. Heat dissipation components cannot individually control the temperature of each cell. Furthermore, current heat dissipation systems often require expensive materials and complex designs, resulting in high costs for heat dissipation components. At the same time, heat dissipation systems are difficult to install and maintain, increasing operation and maintenance costs and the risk of system failure.

[0040] The purpose of this application for a battery heat dissipation base plate is to solve the technical problems of high temperature difference between individual cells in sodium batteries, inability to control the temperature of each cell individually, high cost of heat dissipation components, and difficulties in installation and subsequent maintenance, which lead to an increase in overall cost.

[0041] This application proposes a battery heat dissipation base plate, which will be described in detail below with reference to the specific accompanying drawings.

[0042] like Figure 1As shown in the illustration, this application provides a battery heat dissipation base plate, comprising: a plate body 1 including a first end plate connecting portion 11, a second end plate connecting portion 12, and a plurality of heat dissipation plate portions 13. The first end plate connecting portion 11 and the second end plate connecting portion 12 are parallel and both extend along a first direction. Each heat dissipation plate portion 13 extends along a second direction perpendicular to the first direction and is connected between the first end plate connecting portion 11 and the second end plate connecting portion 12. The plurality of heat dissipation plate portions 13 are spaced apart in the first direction, and the gap between adjacent heat dissipation plate portions 13 forms a heat dissipation channel 131. Each heat dissipation channel 131 is provided with a vent 111 on the first end plate connecting portion 11 and the second end plate connecting portion 12. A plurality of cooling fans 2 are installed at each vent 111 of the first end plate connecting portion 11. The cooling fans 2 are used to introduce external air into the heat dissipation channel 131 or to exhaust air from the heat dissipation channel 131, thereby causing airflow within the heat dissipation channel 131. The cooling fans 2 cause the airflow within the heat dissipation channel 131 to carry away the heat within the plate body 1.

[0043] like Figures 2 to 5 As shown, regarding the structure of the plate 1, as an example, it includes multiple fixing parts 14 for fixing the plate 1 itself. These fixing parts 14 are spaced apart in a first direction and connected to the side of the first end plate connecting part 11 facing away from the second end plate connecting part 12. It also includes multiple support parts 15, which are respectively connected to multiple heat sink parts 13. Each support part 15 supports a cooling fan 2. Both the first end plate connecting part 11 and the second end plate connecting part 12 are provided with multiple mounting holes for connecting to the battery module end plate.

[0044] like Figures 6 to 9 As shown, regarding the structure of the cooling fan 2, as an example, the cooling fan 2 includes multiple intake fans 2A and multiple exhaust fans 2B, which are arranged alternately along a first direction. The cooling fan 2 includes a fan 21 and a mounting frame 22. The fan 21 is connected to the first end plate connection portion 11 via the mounting frame 22. The fan 21 has a fan inlet 211 arranged along a third direction and a fan outlet 212 arranged along a second direction, which is perpendicular to the first and second directions. The fan outlet 212 faces the corresponding ventilation opening 111. The width of the cooling fan 2 is equal to the width between two adjacent heat sink portions 13, and the height of the cooling fan 2 is less than the height of the heat sink portion 13.

[0045] Furthermore, the intake fan 2A is located outside the heat dissipation channel 131, and the exhaust fan 2B is located inside the heat dissipation channel 131. The multiple intake fans 2A and multiple exhaust fans 2B have identical components, differing only in their installation positions. The mounting frame 22 includes a base portion 221 and a side wall portion 222. The fan 21 is mounted on the base portion 221, which has a base ventilation port 2211 corresponding to the fan inlet 211. The side wall portion 222 is arranged around the fan 21, forming a U-shape with the open side of the U-shape corresponding to the fan outlet 212. The two ends of the U-shape are connected to the side wall of the first end plate connecting portion 11. The base portion 221 also has multiple support feet 2212 for supporting the cooling fan 2. Multiple support feet 2212 are respectively provided at the edge corners of the base portion 221, the base ventilation opening 2211 is provided in the middle of the base portion 221, and the two ends of the side wall portion are respectively provided with mounting holes for connecting the mounting frame 22 to the side wall of the first end plate connection portion 11.

[0046] Furthermore, the cooling fan 2 also includes a fan control system connected to the fan 21 for individually controlling the opening and closing of multiple intake fans 21A and multiple exhaust fans 21B. Each intake fan 21A and each exhaust fan 21B can be controlled individually to determine the number of fans to be activated based on the temperature requirements of the sodium battery cell.

[0047] like Figure 10 As shown, the intake fan 2A is located outside the heat dissipation channel 131. The intake fan 2A introduces air into the heat dissipation channel 131. The air enters through the vent 111 of the first end plate connecting part 11, flows towards the second end plate connecting part 12, and is discharged through the vent 111 of the second vent 112. The exhaust fan 2B is located inside the heat dissipation channel 131. The exhaust fan 2B exhausts the air from the heat dissipation channel 131. The air enters through the vent 111 of the second end plate connecting part 12 and is discharged through the vent 111 of the first end plate connecting part 11.

[0048] This application also provides a battery module, including the aforementioned battery heat dissipation base plate.

[0049] like Figure 11 As shown, the battery module includes a sodium battery. The two ends of the sodium battery are connected to the first end face 11 and the second end face 12 respectively. The lower end face of the sodium battery is mounted on the heat sink 13. The upper end face of the sodium battery can be stacked with the heat sink 13 on which the sodium battery is also mounted. The heat from the sodium battery is conducted to the heat sink 13 and the fan 21 drives the air to flow in the heat dissipation channel 131 and carry it out of the plate body 1.

[0050] The assembly method of the battery heat dissipation base plate of this application is as follows: First, fix the fan 21 to the mounting frame 22, then place the mounting frame 22 on the mounting platform 15 on the plate body 1, and use screws to fix the mounting frame 22 to the side wall of the first end plate connecting part 11.

[0051] This application provides a battery heat dissipation base plate with a simple structure. The fan 21 drives the airflow through the heat dissipation channel 131, allowing the airflow to remove heat from the plate body 1. The fan 21 is easy to replace and maintain, and multiple heat dissipation channels 131 can be set to achieve multi-channel large-area heat dissipation. At the same time, it can be conveniently installed in stacked battery modules to achieve simultaneous heat dissipation on the top and bottom of the sodium battery, reducing the temperature difference of the cells in the sodium battery. The number of fans can also be determined according to the temperature requirements of the cells, providing a more efficient, economical and reliable heat dissipation structure for sodium batteries.

[0052] The above description of the embodiments disclosed in this application enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery heat dissipation base plate, characterized in that, Comprising: A plate body (1), including a first end plate connection part (11), a second end plate connection part (12), and a plurality of heat dissipation plate parts (13). The first end plate connection part (11) and the second end plate connection part (12) are parallel and both extend along a first direction. Each heat dissipation plate part (13) is connected between the first end plate connection part (11) and the second end plate connection part (12) extending along a second direction perpendicular to the first direction. The plurality of heat dissipation plate parts (13) are spaced apart in the first direction, and the gaps between adjacent heat dissipation plate parts (13) form heat dissipation channels (131). Each heat dissipation channel (131) has a ventilation opening (111) provided at each of the first end plate connection part (11) and the second end plate connection part (12). A plurality of heat dissipation fans (2). One heat dissipation fan (2) is installed at each ventilation opening (111) of the first end plate connection part (11). The heat dissipation fan (2) is used to introduce external air into the heat dissipation channel (131) or discharge the air in the heat dissipation channel (131), so that the air in the heat dissipation channel (131) flows.

2. The battery heat dissipation base plate according to claim 1, characterized in that, The plurality of heat dissipation fans (2) include a plurality of intake fans (2A) and a plurality of exhaust fans (2B). The plurality of intake fans (2A) and the plurality of exhaust fans (2B) are alternately arranged along the first direction.

3. The battery heat dissipation base plate according to claim 2, characterized in that, The intake fans (2A) are arranged outside the heat dissipation channel (131), and the exhaust fans (2B) are arranged inside the heat dissipation channel (131).

4. The battery heat dissipation base plate according to claim 1, characterized in that, Each heat dissipation fan (2) includes a fan (21) and a mounting frame (22). The fan (21) is connected to the first end plate connection part (11) through the mounting frame (22). The fan (21) has a fan intake opening (211) arranged along a third direction and a fan outlet opening (212) arranged along the second direction. The third direction is perpendicular to the first direction and the second direction. The fan outlet opening (212) faces the corresponding ventilation opening (111).

5. The battery heat dissipation base plate according to claim 4, characterized in that, The mounting frame (22) includes a base part (221) and a side wall part (222). The fan (21) is mounted on the base part (221). The base part (221) has a base ventilation opening (2211) corresponding to the fan intake opening (211). The side wall part (222) is arranged around the periphery of the fan (21). The side wall part (222) is in a U-shaped and the open side of the U-shaped corresponds to the fan outlet opening (212). The two ends of the U-shaped are connected to the side wall of the first end plate connection part (11).

6. The battery heat dissipation base plate according to claim 1, characterized in that, The plate body (1) further includes a plurality of support parts (15). The plurality of support parts (15) are respectively connected to the plurality of heat dissipation plate parts (13). Each support part (15) is used to support one heat dissipation fan (2).

7. The battery heat dissipation base plate according to claim 1, characterized in that, The plate (1) also includes a plurality of fixing parts (14) for fixing the plate (1) itself. The plurality of fixing parts (14) are connected to the side of the first end plate connecting part (11) facing away from the second end plate connecting part (12) in the first direction at intervals.

8. The battery heat dissipation base plate according to claim 1, characterized in that, The width of the cooling fan (2) is equal to the width between two adjacent heat sink portions (13), and the height of the cooling fan (2) is less than the height of the heat sink portion (13).

9. The battery heat dissipation base plate according to claim 1, characterized in that, Both the first end plate connecting part (11) and the second end plate connecting part (12) are provided with multiple mounting holes for connecting to the battery module end plate.

10. A battery module, characterized in that, Includes the battery heat dissipation base plate described in any one of claims 1-9.

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