High efficiency battery cooling system

Abstract

This utility model discloses a high-efficiency cooling battery system, comprising a battery module and a housing. The battery module includes multiple rows of batteries arranged in parallel. At least one side cooling plate, which is attached to the battery, is provided between adjacent rows of batteries. The side cooling plate has a first cooling channel, and a second cooling channel is provided in the bottom plate of the mounting cavity. The bottom plate has an inlet and an outlet communicating with the second cooling channel. The first cooling channels of adjacent side cooling plates are interconnected, and at least one set of inlets and outlets communicating with the second cooling channel exists among the multiple first cooling channels. The multiple side cooling plates of this high-efficiency cooling battery system are interconnected. The second cooling channel in the bottom plate can circulate liquid to the multiple side cooling plates through a set of inlets and outlets, reducing the number of pipes between the bottom plate and the side cooling plates, thereby reducing the risk of leakage. Furthermore, due to the reduced number of interfaces on the bottom plate, the bottom plate itself can maintain high structural strength and integrity.

Description

Technical Field

[0001] This utility model relates to the field of battery pack components technology, specifically to a high-efficiency battery cooling system. Background Technology

[0002] The charging and discharging of battery packs are subject to temperature requirements (appropriate temperatures can extend the lifespan of battery packs). Since commercial vehicles are mostly used for operation, they still need to be used in both high and low temperature conditions. Therefore, the design of commercial vehicle battery packs must take into account the heating and cooling of the batteries to ensure that the battery pack can provide power to the vehicle in all four seasons.

[0003] In related technologies, the cooling system of battery packs typically includes bottom plate cooling and side plate cooling. To simplify the pipe structure layout, bottom plate cooling and side plate cooling are usually connected, that is, multiple side plates are connected to the cooling channels in the bottom plate through pipes. This cooling structure layout can easily increase the risk of leakage, and multiple connecting water nozzles need to be installed on the bottom plate, which increases costs and affects the structural strength of the bottom plate. Summary of the Invention

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of this utility model propose a high-efficiency cooling battery system. In this high-efficiency cooling battery system, multiple side cooling plates are interconnected. The second cooling channel in the bottom plate can circulate liquid to multiple side cooling plates through a set of liquid inlets and outlets, reducing the number of pipes between the bottom plate and the side cooling plates, thereby reducing the risk of leakage. Moreover, compared with the traditional bottom plate and side plate interconnected cooling system, the bottom plate itself can maintain high structural strength and integrity due to the reduction in the number of interfaces on the bottom plate.

[0006] The high-efficiency cooling battery system of this utility model embodiment includes: a battery module, the battery module including multiple rows of batteries arranged in parallel; a housing, the housing having a mounting cavity for accommodating the battery module, the mounting cavity having multiple spaced-apart side cooling plates, at least one side cooling plate attached to the battery being provided between two adjacent rows of batteries, the side cooling plate having a first cooling channel, the bottom plate of the mounting cavity having a second cooling channel, the bottom plate having an inlet and an outlet communicating with the second cooling channel, the first cooling channels of adjacent side cooling plates being connected, and at least one set of inlets and outlets communicating with the second cooling channel among the multiple first cooling channels.

[0007] The high-efficiency cooling battery system of this utility model embodiment has a housing with an installation cavity for accommodating battery modules. Multiple spaced-apart side cooling plates are provided within the installation cavity. At least one side cooling plate is positioned between adjacent rows of batteries and is in contact with the battery. Each side cooling plate has a first cooling channel. A second cooling channel is provided within the bottom plate of the installation cavity. The bottom plate has an inlet and an outlet communicating with the second cooling channel. The first cooling channels of adjacent side cooling plates are interconnected, and each of the multiple first cooling channels has at least one set of inlets and outlets communicating with the second cooling channel. Thus, the multiple side cooling plates are interconnected, and the second cooling channel within the bottom plate can circulate liquid to the multiple side cooling plates through a set of inlets and outlets. This reduces the number of pipes between the bottom plate and the side cooling plates, thereby reducing the risk of leakage. Compared to traditional bottom plate and side plate interconnected cooling systems, the reduced number of interfaces on the bottom plate allows the bottom plate itself to maintain higher structural strength and integrity.

[0008] In some embodiments, a plurality of the side cold plates are wrapped around a first outer cold plate and a second outer cold plate located on both sides of the battery arrangement direction, the first outer cold plate having the liquid inlet and the second outer cold plate having the liquid outlet.

[0009] In some embodiments, the first cooling channel includes a water inlet and a drain outlet located at both ends of the side cold plate, the drain outlet of one of the adjacent side cold plates is connected to the water inlet of the other, and the water inlet of the first outer cold plate is the liquid inlet, and the drain outlet of the second outer cold plate is the liquid outlet.

[0010] In some embodiments, the water inlet is located on the upper side of the side cooling plate, and the drain outlet is located on the lower side of the side cooling plate.

[0011] In some embodiments, two adjacent but spaced-apart side cooling plates are provided between two adjacent rows of batteries.

[0012] In some embodiments, the water inlet of one of the adjacent side cooling plates and the drain outlet of the other are located on the same side in the length direction of the side cooling plate.

[0013] In some embodiments, adjacent side cooling plates are connected by water pipes, and the base plate is provided with a water inlet and a water outlet. The water inlet is connected to the liquid inlet through a water pipe, and the water outlet is connected to the liquid outlet through a water pipe.

[0014] In some embodiments, the side cold plate is provided with a plurality of flow channel ribs arranged at intervals along its height direction and extending along its length direction. Adjacent flow channel ribs form sub-flow channels, and the plurality of sub-flow channels are connected to form the first cooling flow channel. The distance between the plurality of flow channel ribs and the inner end wall of the side cold plate gradually decreases from top to bottom.

[0015] In some embodiments, the inlet and the outlet are located on the same side of the base plate.

[0016] In some embodiments, the side cooling plate is inserted into the base plate; and / or end plates are vertically connected to both ends of the side cooling plate. Attached Figure Description

[0017] Figure 1 This is a top view of the high-efficiency cooling battery system according to an embodiment of the present invention;

[0018] Figure 2 This is a side view of the high-efficiency cooling battery system according to an embodiment of the present invention;

[0019] Figure 3 This is an isometric view of the high-efficiency cooling battery system according to an embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional view of the high-efficiency cooling battery system according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the side cooling plate of the high-efficiency cooling battery system according to an embodiment of the present invention;

[0022] Figure 6 This is a cross-sectional view of the side cooling plate of the high-efficiency cooling battery system according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the layout of the side cooling plate of the high-efficiency cooling battery system according to an embodiment of the present invention.

[0024] Figure label:

[0025] Battery 1, casing 2, bottom plate 3, side cooling plate 4, water inlet 41, water outlet 42, flow channel rib 43, water pipe 5, water inlet 6, water outlet 7, first cooling flow channel 8, second cooling flow channel 9, end plate 10. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] like Figures 1-7 As shown, the high-efficiency cooling battery system of this utility model embodiment includes a battery module and a housing 2.

[0028] Specifically, the battery module includes multiple rows of batteries 1 arranged in parallel. The housing 2 has an installation cavity for accommodating the battery module. The installation cavity is provided with multiple spaced side cooling plates 4. At least one side cooling plate 4 is provided between two adjacent rows of batteries 1 and is in contact with the battery 1. The side cooling plate 4 has a first cooling channel 8. The bottom plate 3 of the installation cavity is provided with a second cooling channel 9. The bottom plate 3 is provided with an inlet and an outlet 42 that communicate with the second cooling channel 9. The first cooling channels 8 of adjacent side cooling plates 4 are connected, and at least one set of inlets and outlets of the multiple first cooling channels 8 communicates with the second cooling channel 9.

[0029] Understandably, the side cooling plate 4 can both act as a cooling plate to absorb heat from the side of the battery 1 to cool the battery 1, and also serve as a reinforcing structure to improve mechanical performance by clamping and supporting the side of the battery 1. In addition, the connection between the first cooling channel 8 of the side cooling plate 4 and the second cooling channel 9 of the base plate 3 simplifies the cooling pipe system. Since the side plates are connected, only one water inlet and one water outlet need to be set on the base plate 3 to connect to the first cooling channel 8 of any side cooling plate 4, so as to achieve water supply to all side cooling plates 4. This reduces the number of pipes between the base plate 3 and the side cooling plates 4, thereby reducing the risk of leakage. Moreover, compared with the traditional interconnected cooling system of the base plate 3 and the side plates, the base plate 3 can maintain high structural strength and integrity due to the reduction in the number of interfaces on the base plate 3.

[0030] The high-efficiency cooling battery system of this utility model embodiment has a housing 2 with an installation cavity for accommodating battery modules. The installation cavity is provided with multiple spaced side cooling plates 4. At least one side cooling plate 4 is provided between two adjacent rows of batteries 1 and is in contact with the battery 1. The side cooling plate 4 has a first cooling channel 8. The bottom plate 3 of the installation cavity is provided with a second cooling channel 9. The bottom plate 3 is provided with an inlet and an outlet 42 that communicate with the second cooling channel 9. The first cooling channels 8 of adjacent side cooling plates 4 are connected, and the multiple first cooling channels 8 have at least one set of inlet and outlet that communicate with the second cooling channel 9. Thus, the multiple side cooling plates 4 are interconnected. The second cooling channel 9 in the bottom plate 3 can circulate liquid to the multiple side cooling plates 4 through a set of inlet and outlet, reducing the number of pipes between the bottom plate 3 and the side cooling plates 4, thereby reducing the risk of leakage. Compared with the traditional bottom plate 3 and side plate interconnected cooling system, the bottom plate 3 itself can maintain high structural strength and integrity due to the reduction in the number of interfaces on the bottom plate 3.

[0031] Furthermore, such as Figure 1 and Figure 7As shown, multiple side cooling plates 4 surround the first outer cold plate 4 and the second outer cold plate 4 located on both sides of the battery 1 in the battery's arrangement direction. The first outer cold plate 4 has a liquid inlet, and the second outer cold plate 4 has a liquid outlet. Thus, cooling water in the second cooling channel 9 can flow into the edge side cold plate 4 (first outer cold plate 4) through the liquid inlet, and then be supplied to the multiple side cold plates 4 sequentially along the communication between the side cold plates 4. The cooling water can finally flow out from the other edge side cold plate 4 (second outer cold plate 4) and merge into the second cooling channel 9 through the liquid outlet, realizing the circulation of cooling water in the multiple side cold plates 4, resulting in good cooling effect.

[0032] Furthermore, the first cooling channel 8 includes inlets 41 and outlets located at both ends of the side cold plates 4. The outlet of one adjacent side cold plate 4 is connected to the inlet 41 of the other, and the inlet 41 of the first outer cold plate 4 is a liquid inlet, while the outlet of the second outer cold plate 4 is a liquid outlet. Thus, the inlets 41 and outlets are positioned opposite each other at both ends of the side cold plates 4, which increases the effective cooling area of ​​the first cooling channel 8 and improves the cooling effect. The relative connection between the inlets 41 and outlets 42 of adjacent side cold plates 4 promotes smooth circulation of cooling water and improves its flowability.

[0033] In some embodiments, such as Figure 6 As shown, the water inlet 41 is located on the upper side of the side cooling plate 4, and the drain outlet is located on the lower side of the side cooling plate 4. It can be understood that the side cooling plate 4 is vertically arranged, and placing the drain outlet above the side cooling plate 4 facilitates the flow of cooling water from top to bottom.

[0034] In some embodiments, such as Figure 3 and Figure 7 As shown, two adjacent but spaced-apart side cooling plates 4 are provided between two adjacent rows of batteries 1. It can be understood that the two adjacent side cooling plates 4 can be attached to the batteries 1 on both sides respectively. Compared with a single side cooling plate 4, the double-layered side cooling plates 4 have a better cooling effect on the batteries 1 on both sides.

[0035] Furthermore, such as Figure 7 As shown, the water inlet 41 of one of the adjacent side cold plates 4 and the drain outlet of the other are located on the same side along the length of the side cold plate 4. According to the above description, the water inlet 41 and the drain outlet of the adjacent side cold plates 4 are interconnected. Therefore, setting the water inlet 41 and the drain outlet of the adjacent side cold plates 4 on the same side facilitates nearby connection, reduces the length of the pipe layout, and optimizes the cooling system of the battery pack 1.

[0036] In some embodiments, adjacent side cold plates 4 are connected by water pipes 5. The base plate 3 is provided with a water inlet 6 and a water outlet 7. The water inlet 6 is connected to the liquid inlet through the water pipe 5, and the water outlet 7 is connected to the liquid outlet through the water pipe 5. That is, the connection and transition between each cooling channel are all achieved through the water pipes 5. The routing of the water pipes 5 can be set according to the specific space, which is simple and convenient.

[0037] In some embodiments, such as Figure 6 As shown, the side cooling plate 4 has multiple flow channel ribs 43 arranged at intervals along its height and extending along its length. Adjacent flow channel ribs 43 form sub-flow channels, and multiple sub-flow channels are connected to form the first cooling flow channel 8. The distance between the multiple flow channel ribs 43 and the inner end wall of the side cooling plate 4 gradually decreases from top to bottom. In other words, the flow channel ribs 43 in the side cooling plate 4 are in an "inverted V-shape," with the gaps on both sides gradually narrowing, which facilitates the uniform entry of cooling water into the flow channels between the flow channel ribs 43, ensuring the cooling effect.

[0038] Preferably, the inlet 41 and the outlet 42 are located on the same side of the base plate 3, which facilitates the nearby layout of pipes between the side cold plates 4, optimizes the pipe system, and reduces the complexity of pipe laying and the overall length.

[0039] Preferably, the side cooling plate 4 is inserted into the bottom plate 3. This makes it easy to assemble and disassemble the side cooling plate 4 and the bottom plate 3, facilitating the maintenance and replacement of structural components.

[0040] Preferably, the two ends of the side cold plate 4 are vertically connected to end plates 10, the end plates 10 can support the front and rear sides of the battery 1, and the frame formed by the side cold plate 4 and the end plates 10 has higher structural strength and stability.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 utility model and simplifying the description, and are not intended to 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 utility model.

[0042] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature 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.

[0045] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A high efficiency battery cooling system, comprising: include: A battery module, the battery module comprising multiple rows of batteries arranged in parallel; The housing has a mounting cavity for accommodating the battery module. The mounting cavity has multiple spaced-apart side cooling plates. At least one side cooling plate that is in contact with the battery is provided between two adjacent rows of batteries. The side cooling plate has a first cooling channel. The bottom plate of the mounting cavity has a second cooling channel. The bottom plate has an inlet and an outlet that communicate with the second cooling channel. The first cooling channels of adjacent side cooling plates are connected. At least one set of inlets and outlets of the multiple first cooling channels communicates with the second cooling channel.

2. The high efficiency battery cooling system of claim 1, wherein, Multiple side cooling plates are wrapped around a first outer cooling plate and a second outer cooling plate located on both sides of the battery arrangement direction. The first outer cooling plate has the liquid inlet, and the second outer cooling plate has the liquid outlet.

3. The high-efficiency battery cooling system of claim 2, wherein, The first cooling channel includes a water inlet and a water outlet located at both ends of the side cold plate. The water outlet of one of the adjacent side cold plates is connected to the water inlet of the other. The water inlet of the first outer cold plate is the liquid inlet, and the water outlet of the second outer cold plate is the liquid outlet.

4. The high efficiency battery cooling system of claim 3, wherein, The water inlet is located on the upper side of the side cooling plate, and the drain outlet is located on the lower side of the side cooling plate.

5. The high efficiency battery cooling system of claim 3, wherein, Two adjacent but spaced-apart side cooling plates are provided between the two rows of batteries.

6. The high efficiency battery cooling system of claim 3, wherein, The water inlet of one of the adjacent side cooling plates and the drain outlet of the other are located on the same side along the length of the side cooling plate.

7. The high efficiency battery cooling system of claim 1, wherein, The adjacent side cooling plates are connected by water pipes. The bottom plate is provided with a water inlet and a water outlet. The water inlet is connected to the liquid inlet by a water pipe, and the water outlet is connected to the liquid outlet by a water pipe.

8. The high efficiency battery cooling system of claim 1, wherein, The side cold plate is provided with a plurality of flow channel ribs arranged at intervals along its height direction and extending along its length direction. Adjacent flow channel ribs form sub-flow channels. The plurality of sub-flow channels are connected to form the first cooling flow channel. The distance between the plurality of flow channel ribs and the inner end wall of the side cold plate gradually decreases from top to bottom.

9. The high efficiency battery cooling system of claim 3, wherein, The inlet and the outlet are located on the same side of the base plate.

10. The high efficiency battery cooling system of claim 1, wherein, The side cooling plate is inserted into the bottom plate; and / or the two ends of the side cooling plate are vertically connected to end plates.

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