Battery devices and vehicles

Abstract

The application discloses a battery device and a vehicle. The battery device comprises a battery module and a box. The box has a containing cavity for containing the battery module, and the box is arranged on one side of the battery module along a first direction. The box comprises a heat exchange support for supporting the battery module, and the heat exchange support is internally formed with a heat exchange flow channel extending along a second direction, the heat exchange flow channel is used for heat exchange for the battery module, and a plurality of flow resistance columns are arranged in the heat exchange flow channel and are spaced apart along the second direction, so that when the heat exchange medium flows through the flow resistance columns, the flow rate is reduced, turbulence is formed in the first direction, and mixing is enhanced, wherein the first direction and the second direction are perpendicular to each other. The technical scheme of the application can improve the heat exchange efficiency of the heat exchange support in the battery device, thereby improving the operation stability of the battery monomer.

Description

Technical Field

[0001] This application relates to the field of vehicles, and in particular to a battery device and a vehicle. Background Technology

[0002] With the development of battery technology, vehicles equipped with battery packs have gained a longer driving range.

[0003] In conventional batteries, heat exchange components are used to exchange heat and regulate the battery's operating temperature. However, the temperature of the heat exchange component closer to the battery is higher, and simply increasing the flow rate of the heat exchange medium cannot effectively improve the heat exchange efficiency of the component. Utility Model Content

[0004] In view of the above problems, this application provides a battery device and a vehicle that can improve the heat exchange efficiency of the heat exchange components in the battery device, thereby improving the operational stability of the battery cells.

[0005] In a first aspect, this application provides a battery device, including a battery module and a housing. The housing has a receiving cavity for accommodating the battery module. The housing is disposed on one side of the battery module along a first direction. The housing includes a heat exchange support member for supporting the battery module. A heat exchange channel extending along a second direction is formed within the heat exchange support member for heat exchange of the battery module. The heat exchange channel is provided with a plurality of flow-blocking columns arranged at intervals along the second direction, such that the flow velocity of the heat exchange medium decreases when it flows through the flow-blocking columns, and turbulence is formed in the first direction, thereby enhancing mixing. The first direction and the second direction are perpendicular to each other.

[0006] In some embodiments, the heat exchange channel has a maximum dimension W along a third direction in a cross-section perpendicular to the second direction. The flow-blocking column has a maximum projected dimension W1 along a third direction in its cross-section; W and W1 satisfy: 0.05W ≤ W1 ≤ 0.1W. The third direction is perpendicular to both the first and second directions.

[0007] In some embodiments, in a cross-section perpendicular to the second direction, there is a gap between each flow-blocking column and the two sidewalls of the heat exchange channel along the third direction.

[0008] In some embodiments, the battery module includes a plurality of battery cells arranged sequentially along a second direction, and the heat exchange support is provided with two heat exchange channels arranged in parallel along a third direction. The heat exchange support is also provided with a connecting channel located at the ends of the two heat exchange channels along the second direction, so as to form a channel structure in series between the two heat exchange channels.

[0009] In some embodiments, the ends of the two heat exchange channels away from the connecting channel along the second direction are respectively provided with fluid interfaces, wherein one fluid interface is connected to the inlet pipe and the other fluid interface is connected to the outlet pipe.

[0010] In some embodiments, the heat exchange support includes a first plate and a second plate. The first plate is disposed facing the battery module, and the second plate is disposed opposite to the first plate. The surface of the second plate facing the first plate has two first grooves spaced apart along a third direction, which, together with the first plate, enclose a heat exchange channel. The surface of the second plate also has a plurality of protrusions extending toward the first plate, which abut against the first plate to form flow-blocking columns.

[0011] In some embodiments, the first direction is the height direction of the battery module, at least a portion of the first plate is in direct contact with the surface of the battery module, and the second plate is disposed on the side of the first plate away from the battery module and is fixedly connected to the first plate to form a heat exchange channel.

[0012] In some embodiments, a plurality of flow-blocking columns are spaced apart in each first groove along a second direction, wherein, along the second direction, flow-blocking columns located in odd-numbered positions are biased against the first sidewall of the first groove, and flow-blocking columns located in even-numbered positions are biased against the second sidewall of the first groove opposite to the first sidewall.

[0013] In some embodiments, the flow-blocking columns in the two first grooves are arranged in a mirror-symmetric manner along the second direction, wherein the bias direction of the odd-numbered flow-blocking column in one first groove is opposite to the bias direction of the corresponding flow-blocking column in the other first groove.

[0014] In some embodiments, each flow-blocking column extends along a third direction, a first end of the flow-blocking column is fixedly connected to a first sidewall of a first groove, and a flow gap is formed between a second end of the flow-blocking column and a second sidewall of the first groove, wherein the first sidewall and the second sidewall are two sidewalls of the first groove that are arranged opposite to each other along a third direction.

[0015] In some embodiments, the maximum depth H of the first groove recessed along the first direction satisfies: 3mm≤H≤5mm.

[0016] Secondly, this application provides a vehicle that includes the battery device in any of the above embodiments.

[0017] In the battery device and vehicle provided by the embodiments of this application, the heat exchange support not only supports the battery module but also facilitates heat exchange. When the battery module temperature is too high, it lowers the battery module temperature. In low-temperature environments, it raises the battery module temperature rapidly, thereby improving its efficiency. The heat exchange assembly includes flow-blocking columns. When the heat exchange medium flows through the heat exchange channel, it collides with the flow-blocking columns, generating backflow. The special arrangement of the flow-blocking columns promotes turbulence in the heat exchange medium in the first direction and enhances mixing. In turbulent flow, the fluid particle movement is more intense and irregular, which disrupts the fluid boundary layer, ensuring thorough mixing of the heat exchange medium near and away from the battery module. Specifically, the upper layer of the heat exchange medium near the battery module mixes with the lower layer away, resulting in a more uniform temperature throughout the heat exchange medium. Meanwhile, enhanced mixing can ensure the uniformity of the heat exchange medium temperature, reduce the occurrence of local overheating or overcooling, and reduce the temperature difference between the medium outlet and inlet, which is conducive to improving the temperature consistency of the entire battery device and thus improving the operational stability of the battery device.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals denote the same or similar features, and the drawings are not drawn to scale.

[0020] Figure 1 This is a schematic diagram of the structure of a battery device provided in one embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the structure of a supporting heat exchanger and a battery module provided in one embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the structure of the second plate provided in one embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the structure of a first plate provided in one embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the structure of a heat exchange support and a battery module provided in another embodiment of this application;

[0025] Figure 6A schematic diagram of the structure of the second plate provided in another embodiment of this application;

[0026] Figure 7 This is a schematic diagram of the structure of a heat exchange support provided in another embodiment of this application;

[0027] Figure 8 for Figure 7 Schematic diagram of section AA;

[0028] Figure 9 for Figure 7 A schematic diagram of the structure of the BB section.

[0029] Detailed Explanation of Reference Numerals

[0030] 1. Battery assembly; 2. Battery module; 3. Housing; 31. First housing; 32. Second housing; 301. Heat exchange support; 302. Heat exchange channel; 303. Flow-blocking column; 304. First channel; 305. Second channel; 306. Connecting channel; 307. Fluid interface; 308. First plate; 309. Second plate; 310. First groove; 311. Protrusion; 312. First sidewall; 313. Second sidewall; 314. Odd-numbered column; 315. Even-numbered column; 316. Flow gap; 4. Inlet pipe; 5. Outlet pipe; 6. Battery cell; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0031] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. Those skilled in the art will recognize that this utility model can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0033] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0034] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. Furthermore, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0035] In conventional technologies, the cooling structure within a battery pack suffers from uneven flow distribution and high flow resistance, resulting in low heat exchange efficiency of the heat exchange medium during flow. Specifically, the heat exchange medium temperature is higher on the side closer to the battery and lower on the side farther away, leading to ineffective heat exchange and potentially causing battery malfunction.

[0036] In view of the above problems, embodiments of this application provide a battery device in which a heat exchange support not only supports the battery module but also performs heat exchange. When the battery module temperature is too high, the temperature of the battery module is reduced. In low-temperature environments, the battery module is heated to rapidly increase its operating temperature, thereby improving its efficiency. In the heat exchange assembly, flow-blocking columns are provided. When the heat exchange medium flows through the heat exchange channel, it collides with the flow-blocking columns, generating backflow. The special arrangement of the flow-blocking columns promotes turbulence in the heat exchange medium in the first direction and enhances mixing. In turbulent flow, the fluid particle movement is more intense and irregular, which can disrupt the fluid boundary layer, ensuring thorough mixing of the heat exchange medium near and away from the battery module. Specifically, the upper layer of the heat exchange medium near the battery module mixes with the lower layer away, resulting in a more uniform temperature throughout the heat exchange medium. Meanwhile, enhanced mixing can ensure the uniformity of the heat exchange medium temperature, reduce the occurrence of local overheating or overcooling, and reduce the temperature difference between the medium outlet and inlet, thereby improving the temperature consistency of the entire battery device and thus enhancing the operational stability of the battery device.

[0037] like Figures 1 to 3 As shown, a battery device 1 provided in an embodiment of this application includes a battery module 2 and a housing 3. The housing 3 has a receiving cavity for accommodating the battery module 2. The housing 3 is disposed on one side of the battery module 2 along a first direction X. The housing 3 includes a heat exchange support member 301 for supporting the battery module 2. A heat exchange channel 302 extending along a second direction Y is formed in the heat exchange support member 301 for heat exchange of the battery module 2. The heat exchange channel 302 is provided with a plurality of flow-blocking columns 303 arranged at intervals along the second direction Y, so that the flow velocity of the heat exchange medium is reduced when it flows through the flow-blocking columns 303, and turbulence is formed in the first direction X, thereby enhancing mixing. Wherein, the first direction X and the second direction Y are perpendicular to each other. The battery module 2 may include a plurality of battery cells 6, which are connected in series, parallel or mixed connection through a busbar component, and the plurality of battery cells 6 in the battery module 2 are arranged sequentially along the second direction Y.

[0038] For example, the second direction Y is the thickness direction of the battery cell 6, the third direction Z is the width direction of the battery cell 6, the first direction X is the height direction of the battery cell 6, and the first direction X can also be the thickness direction of the heat exchange support 301.

[0039] The housing 3 typically includes a first housing 31 and a second housing 32. The first housing 31 and the second housing 32 are fastened together to form a closed space inside the housing 3 to house the battery module 2. Here, "closed" refers to covering or shutting down; it can be sealed or unsealed. The first housing 31 can be a top cover or a bottom plate. As an example, the housing 3 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, forming a closed space inside the housing 3 to house the battery module 2. Optionally, the heat exchange support 301 can be the bottom plate of the housing 3.

[0040] The flow-blocking column 303 is a structure with a certain structural rigidity installed inside the heat exchange channel 302. Multiple flow-blocking columns 303 are alternately arranged on both sides of the heat exchange channel 302, causing the heat exchange medium to continuously change direction during flow. For example, the heat exchange medium can form a continuous S-shaped tortuous flow path within the heat exchange channel 302 (as shown by the dotted line in the figure), thereby extending the length of the flow path of the heat exchange medium and extending the effective heat exchange time of the heat exchange medium.

[0041] Furthermore, the flow-restricting column 303 causes turbulence in the heat exchange medium in the first direction X, allowing fluids at different temperatures within the heat exchange medium to mix thoroughly. This mixing effect helps eliminate temperature gradients within the heat exchange medium, making the temperature of the heat exchange medium more uniform and further improving the uniformity of heat exchange and the overall heat exchange effect.

[0042] In the heat exchange channel 302, the heat exchange medium is mostly in laminar flow, and the heat transfer between the fluid and the heat exchange surface mainly relies on heat conduction, resulting in relatively low heat exchange efficiency.

[0043] In this embodiment, the flow-blocking column 303 creates a continuous, tortuous flow path for the heat exchange medium, generating turbulence in the first direction X. Turbulence refers to the irregular, three-dimensional random vortex motion generated within the flow channel when a fluid encounters an obstacle and its velocity decreases sharply. In turbulent flow, the particle motion of the fluid is more intense. The heat exchange medium encountering the flow-blocking column 303 is mixed not only in the second direction Y, but also in the third direction Z and the first direction X.

[0044] In this process, heat transfer within the heat exchange medium and between the heat exchange medium and the heat exchange surface relies not only on thermal conduction but also on convective heat transfer. Through turbulence, a portion of the heat exchange medium near the heat exchange surface mixes with a portion far from the heat exchange surface, thus increasing the effect of convective heat transfer and improving the rate of heat transfer. This enhances the heat exchange efficiency between the heat exchange support 301 and the battery module 2, helping to better control the temperature of the battery module 2, ensuring that the battery operates within a suitable temperature range, and improving battery performance and lifespan.

[0045] The heat exchange support 301 not only supports the battery module 2 but also facilitates heat exchange. When the battery module 2 temperature is too high, it lowers the temperature. In low-temperature environments, it raises the temperature of the battery module 2, rapidly increasing its operating temperature and thus improving its efficiency. The heat exchange support 301 includes flow-blocking columns 303. When the heat exchange medium flows through the heat exchange channel 302, it collides with the flow-blocking columns 303, creating backflow. The special arrangement of the flow-blocking columns 303 promotes turbulence and enhances mixing in the heat exchange medium in the first direction X. In turbulent flow, the fluid particles move more violently and irregularly, disrupting the fluid boundary layer and ensuring thorough mixing of the heat exchange medium near and away from the battery module 2. Specifically, the upper layer of the heat exchange medium near the battery module 2 mixes with the lower layer away, resulting in a more uniform temperature throughout the heat exchange medium. Meanwhile, enhanced mixing can ensure the uniformity of the heat exchange medium temperature, reduce the occurrence of local overheating or overcooling, and reduce the temperature difference between the medium outlet and inlet, thereby improving the temperature consistency of the entire battery device and thus enhancing the operational stability of the battery device.

[0046] like Figure 3 As shown, in some embodiments of this application, the heat exchange channel 302 has a maximum dimension W along the third direction Z on a cross section perpendicular to the second direction Y; the flow-blocking column 303 has a maximum projected dimension W1 along the third direction Z on a cross section; W and W1 satisfy: 0.05W≤W1≤0.1W; wherein, the third direction Z is perpendicular to both the first direction X and the second direction Y.

[0047] In the above structure, the size of the flow-restricting column 303 is set to be large enough to disrupt the laminar boundary layer and induce high-intensity turbulence in the first direction X. Setting W1 ≤ 0.1W avoids excessive blockage of the heat exchange channel 302 by the flow-restricting column 303, preventing a sharp increase in pressure drop. The above width ratio range maximizes heat transfer performance while ensuring flow efficiency.

[0048] In some embodiments of this application, in a cross-section perpendicular to the second direction Y, there are gaps between each flow-blocking column 303 and the two sidewalls of the heat exchange channel 302 along the third direction Z. The presence of these gaps causes the fluid to form a three-dimensional vortex around the flow-blocking column 303, creating turbulence in the contact direction of the battery module 2 (first direction X). Furthermore, the fluid accelerates in the gap region, generating a velocity gradient and enhancing convective heat transfer capability. The above structure can effectively reduce the temperature difference of the heat exchange medium at different locations in the first direction X, thereby improving heat transfer efficiency and enhancing the temperature uniformity of the heat exchange support 301.

[0049] like Figure 5As shown, in some embodiments of this application, the battery module 2 includes a plurality of battery cells 6 arranged sequentially along the second direction Y. The heat exchange support 301 has two heat exchange channels 302 arranged parallel to each other along the third direction Z. The heat exchange support 301 also has a connecting channel 306 located at the ends of the two heat exchange channels 302 along the second direction Y, forming a series flow channel structure. For example, the two heat exchange channels 302 are a first channel 304 and a second channel 305.

[0050] The heat exchange support 301 has two heat exchange channels 302 arranged parallel to each other along a third direction Z. The third direction Z is perpendicular to the second direction Y. The parallel arrangement of the two heat exchange channels 302 increases the heat exchange area, providing more sufficient heat exchange space for the battery module 2 and helping to more evenly remove the heat generated by the battery cells 6.

[0051] Two parallel heat exchange channels 302 can exchange heat with the battery module 2 from different locations. Since the battery module 2 is composed of multiple battery cells 6 arranged along the second direction Y, the heat generation of the battery cells 6 at different locations may vary. The two heat exchange channels 302 can cover different areas of the battery module 2 respectively, allowing each battery cell 6 to be closer to the heat exchange channel 302, thereby absorbing or releasing heat more evenly, reducing temperature differences inside the battery module 2, and avoiding local overheating or undercooling that would reduce the operating efficiency of the battery cells 6.

[0052] Furthermore, by arranging two heat exchange channels 302 in parallel within the heat exchange support 301, the connecting channel 306 forms a series structure. For example, the connecting channel 306 extends along the third direction Z. This design ensures heat exchange efficiency while making efficient use of the internal space of the heat exchange support 301. Compared to using multiple independent and dispersed heat exchange structures, this scheme allows the heat exchange support 301 to be more compact, reducing space occupation and facilitating the integrated design of the battery device 1.

[0053] like Figure 1 as well as Figure 4 As shown, in some embodiments of this application, the ends of the two heat exchange channels 302 away from the connecting channel 306 along the second direction Y are respectively provided with fluid interfaces 307, wherein one fluid interface 307 is connected to the inlet pipe 4 and the other fluid interface 307 is connected to the outlet pipe 5.

[0054] A complete heat exchange medium circulation path is constructed by setting up a fluid interface 307 connecting the inlet pipe 4 and the outlet pipe 5. The external heat exchange medium can smoothly enter the heat exchange channel 302 from the inlet pipe 4 through the fluid interface 307. During the process of flowing through the two series-connected heat exchange channels 302, it fully absorbs the heat generated by the battery module 2, and then flows out from the other fluid interface 307 through the outlet pipe 5 with the heat. This circulation design ensures that the heat exchange medium can continuously cool (or heat, depending on the specific operating conditions) the battery module 2, maintaining the battery module 2 in a suitable temperature range.

[0055] The connection method between the inlet pipe 4 and the outlet pipe 5 and the external system allows the heat exchange system to be easily integrated with the cooling or heating system of the entire equipment. The flow rate, temperature, and pressure of the heat exchange medium can be flexibly adjusted according to the actual operating status and temperature requirements of the battery module 2.

[0056] Fluid interfaces 307 are located at the same end of the heat exchange channel 302 and are connected to the inlet pipe 4 and outlet pipe 5 respectively. This design makes the connection between the heat exchange support 301 and external pipelines simpler and more intuitive. During equipment installation, operators can easily connect the inlet pipe 4 and outlet pipe 5 to the corresponding fluid interfaces 307, reducing installation difficulty and time costs. During equipment maintenance, if cleaning, inspection, or repair of the heat exchange channel 302 is required, simply disconnecting the inlet pipe 4 and outlet pipe 5 from the fluid interfaces 307 allows for convenient operation of the heat exchange support 301 without the need for large-scale disassembly of the entire equipment, improving maintenance efficiency and convenience.

[0057] like Figure 7 as well as Figure 8 As shown, in some embodiments of this application, the heat exchange support 301 includes a first plate 308 and a second plate 309. The first plate 308 is disposed facing the battery module 2, and the second plate 309 is disposed opposite to the first plate 308. The surface of the second plate 309 facing the first plate 308 has two first grooves 310 spaced apart along a third direction (Z), which, together with the first plate 308, form a heat exchange channel 302. The surface of the second plate 309 also has a plurality of protrusions 311 extending toward the first plate 308, which abut against the first plate 308 to form flow-blocking pillars 303.

[0058] The flow-blocking column 303, formed by the abutment of the protrusion 311 and the first plate 308, is disposed within the heat exchange channel 302. When the heat exchange medium flows in the heat exchange channel 302, the flow-blocking column 303 obstructs the straight flow of the medium, forcing the heat exchange medium to generate complex flow patterns such as flow around and eddies, thereby forming turbulence within the heat exchange channel 302. Under turbulent conditions, the particle motion of the fluid is more intense, and the heat transfer efficiency between the fluid and the heat exchange surface (i.e., the side of the heat exchange support 301 facing the battery module 2) is greatly improved, which can effectively enhance the heat exchange effect, allowing the heat generated by the battery module 2 to be carried away by the heat exchange medium more quickly, and keeping the battery module 2 operating within a suitable temperature range.

[0059] Multiple protrusions 311 are distributed in a certain pattern to form flow-blocking columns 303, which can uniformly interfere with the flow of the heat exchange medium, making the flow state of the heat exchange medium more uniform throughout the entire heat exchange channel 302. This can avoid the situation where the heat exchange medium flows too fast or too slow in a local area, so that all parts of the battery module 2 can receive more balanced heat exchange, reduce the temperature difference inside the battery module 2, and improve the performance and life of the battery.

[0060] The first plate 308 and the second plate 309 are arranged opposite each other, and a heat exchange channel 302 and a flow-blocking column 303 are formed by the first groove 310 and the protrusion 311. This design makes full use of the space between the plate structures, and achieves a reasonable layout of the heat exchange channel 302 and the flow-blocking column 303 within a limited space. Compared with an external heat exchange structure, this solution makes the heat exchange support 301 more compact, reduces the space occupied by the battery device 1, and thus improves the energy density of the battery device 1.

[0061] In some embodiments of this application, the first direction X is the height direction of the battery module 2, at least a portion of the first plate 308 is in direct contact with the surface of the battery module 2, and the second plate 309 is disposed on the side of the first plate 308 away from the battery module 2 and is fixedly connected to the first plate 308 to form a heat exchange channel 302.

[0062] For example, the first plate 308 is a flat plate structure, and the first plate 308 and the second plate 309 are circumferentially sealed to each other.

[0063] The first plate 308 has at least a portion in direct contact with the surface of the battery module 2. This design allows the first plate 308 to quickly and directly absorb the heat generated by the battery module 2, reducing intermediate heat transfer steps and improving heat conduction efficiency. The second plate 309 is located on the side of the first plate 308 away from the battery module 2 and is fixedly connected to the first plate 308 to form a heat exchange channel 302. This layout makes reasonable use of space, integrating the heat exchange function inside the heat exchange support 301, making the entire structure more compact.

[0064] The first direction X is the height direction of the battery module 2. This structural design can better adapt to battery modules 2 of different heights and sizes. By adjusting the dimensions of the first plate 308 and the second plate 309 and the connection method between them, the height direction can be flexibly adjusted to meet the heat exchange requirements of battery modules 2 of different specifications, thereby improving the versatility and adaptability of the heat exchange support 301.

[0065] like Figure 6 As shown in some embodiments of this application, in the heat exchange support 301, each first groove 310 is provided with a plurality of flow-blocking columns 303 spaced apart along the second direction Y. Among them, along the second direction Y, the flow-blocking columns 303 located in odd-numbered positions are biased on the first sidewall 312 of the first groove 310, and the flow-blocking columns 303 located in even-numbered positions are biased on the second sidewall 313 of the first groove 310 opposite to the first sidewall 312.

[0066] By offsetting the flow-blocking columns 303, the heat exchange medium is forced to generate phenomena such as flow around and eddies as it flows through them. When the heat exchange medium flows to the odd-numbered flow-blocking column 303, it deflects towards the first sidewall 312; when it flows to the even-numbered flow-blocking column 303, it deflects towards the second sidewall 313. This repeated deflection causes turbulence in the heat exchange medium within the heat exchange channel 302. The more intense movement of fluid molecules in turbulent flow enhances heat transfer efficiency. The arrangement of the odd- and even-numbered flow-blocking columns 303 with different sidewall offsets ensures more uniform flow of the heat exchange medium within the heat exchange channel 302. This avoids the problem of insufficient or excessive heat transfer caused by a single arrangement of the flow-blocking columns 303, ensuring a relatively balanced heat transfer effect in all areas within the heat exchange channel 302.

[0067] In turbulent flow, heat transfer within the fluid is primarily achieved through the violent movement of fluid particles, resulting in a significantly higher heat transfer rate compared to laminar flow. This allows the heat exchange support 301 to remove heat generated by the battery module 2 more quickly, effectively reducing the temperature of the battery module 2 and improving battery performance and lifespan. The arrangement of the odd-even sequence flow-blocking columns 303 with different sidewall offsets ensures a more uniform flow distribution of the heat exchange medium within the heat exchange channel 302. The heat exchange medium in each region can fully exchange heat with the wall of the heat exchange channel 302, reducing temperature differences within the battery module 2. This avoids damage to the individual battery cells 6 caused by localized overheating or overcooling, ensuring the overall stability and reliability of the battery module 2. When the heat exchange medium flows through the flow-blocking columns 303, flow separation can easily occur behind the flow-blocking columns 303, forming a vortex region, increasing flow resistance and reducing heat exchange efficiency. The arrangement of the odd-even sequence flow-blocking columns 303 with different sidewall offsets effectively suppresses flow separation. By guiding the heat exchange medium to bypass the flow-blocking column 303 in an orderly manner, the formation of vortex regions is reduced, making the flow of the heat exchange medium more stable and further optimizing the fluid dynamics performance.

[0068] The flow-blocking column 303 is connected to the sidewall of the first groove 310, increasing the structural strength of the second plate 309. During the use of the battery device 1, the heat exchange support 301 may be affected by various external forces and vibrations. The presence of the flow-blocking column 303 can disperse and bear some of the external forces, reduce the deformation and damage of the second plate 309, and improve the structural reliability of the entire heat exchange support 301.

[0069] Therefore, the above structure effectively improves the heat exchange efficiency and structural stability of the heat exchange support 301.

[0070] In some embodiments of this application, the flow-blocking columns 303 in the two first grooves 310 are arranged in a mirror-symmetric manner along the second direction Y, wherein the bias direction of the odd-numbered flow-blocking column 303 in one first groove 310 is opposite to the bias direction of the corresponding flow-blocking column 303 in the other first groove 310.

[0071] The surface of the second plate 309 facing the first plate 308 has two first grooves 310 spaced apart along the third direction Z. These two first grooves 310 and the first plate 308 together enclose a heat exchange channel 302. Each first groove 310 has multiple flow-blocking columns 303 spaced apart along the second direction Y, and the flow-blocking columns 303 in the two first grooves 310 are arranged in a mirror-symmetrical manner along the second direction Y. Specifically, for an odd-numbered flow-blocking column 303 in one first groove 310, its bias direction is opposite to the bias direction of the corresponding flow-blocking column 303 in the other first groove 310 (i.e., the same position in the second direction Y). For example, if in the first first groove 310, the odd-numbered flow-blocking column 303 is biased against the first sidewall 312, then in the second first groove 310, the corresponding odd-numbered flow-blocking column 303 is biased against the second sidewall 313 opposite to the first sidewall 312.

[0072] The unique arrangement of the flow-restricting columns 303 within the two first grooves 310 allows the heat exchange support 301 to better adapt to heat exchange conditions under different flow rates. At high flow rates, the complex turbulent structure fully utilizes the heat-carrying capacity of the heat exchange medium, ensuring sufficient heat transfer. At low flow rates, the mirror-symmetrical arrangement of the flow-restricting columns 303 with opposite offset directions still ensures sufficient turbulence of the heat exchange medium within the flow channel, maintaining a certain heat exchange efficiency. This flexibility allows the heat exchange support 301 to be widely used in battery devices 1 under various operating conditions.

[0073] In some embodiments of this application, each flow-blocking column 303 extends along the third direction Z, the first end of the flow-blocking column 303 is fixedly connected to the first sidewall 312 of the first groove 310, and a flow gap 316 is formed between the second end of the flow-blocking column 303 and the second sidewall 313 of the first groove 310, wherein the first sidewall 312 and the second sidewall 313 are two sidewalls of the first groove 310 that are arranged opposite to each other along the third direction Z.

[0074] The flow-restricting column 303 has a first end and a second end, both of which extend along the third direction Z. Its first end is fixedly connected to the first sidewall 312 of the first groove 310. This connection ensures the structural stability of the flow-restricting column 303, enabling it to withstand various forces generated during the flow of the heat exchange medium. A flow gap 316 is formed between the second end of the flow-restricting column 303 and the second sidewall 313 of the first groove 310. The first sidewall 312 and the second sidewall 313 are two sidewalls of the first groove 310 arranged opposite each other along the third direction Z. This design prevents the heat exchange medium from flowing directly through the flow-restricting column 303; instead, it must bypass the flow-restricting column 303, and some of the heat exchange medium continues to flow through the flow gap 316, thus changing the flow path and state of the heat exchange medium.

[0075] The flow-blocking column 303 extends Z-axis along a third direction, increasing the contact area between the heat exchange medium and the flow-blocking column 303. Simultaneously, due to the presence of the flow-blocking column 303, the flow path of the heat exchange medium within the flow channel becomes longer, increasing the contact time between the heat exchange medium and the walls of the heat exchange channel 302 (first plate 308 and second plate 309) and the flow-blocking column 303. More heat can be transferred over a longer contact time and a larger contact area, thereby improving the heat exchange efficiency of the entire heat exchange system.

[0076] When the heat exchange medium flows within the heat exchange channel 302 and encounters the flow-blocking column 303, the medium will experience flow around the flow-blocking column 303 due to its obstruction. Simultaneously, the flow gap 316 between the second end of the flow-blocking column 303 and the second sidewall 313 of the first groove 310 further complicates the flow of the heat exchange medium. Some of the heat exchange medium will pass through the flow gap 316 at a higher velocity, creating a velocity difference with the surrounding relatively slow-flowing heat exchange medium, thus forming eddies and turbulence. In turbulent flow, heat transfer within the fluid is mainly achieved through the violent movement of fluid particles, significantly increasing the heat transfer rate compared to laminar flow. This allows for faster removal of heat generated by the battery module 2, effectively reducing the temperature of the individual battery cells 6 and improving battery performance and lifespan.

[0077] Multiple flow-blocking columns 303 are spaced apart along the second direction Y, and each flow-blocking column 303 has a flow gap 316, making the flow of the heat exchange medium within the heat exchange channel 302 more uniform. The heat exchange medium does not concentrate its flow in a certain area, but is uniformly distributed throughout the entire channel, avoiding situations where the flow velocity is too fast or too slow in certain areas. The uniform flow state helps to improve the uniformity of heat exchange, reduce temperature differences inside the battery module 2, and ensure the overall stability and reliability of the battery module 2.

[0078] The first end of the flow-blocking column 303 is fixedly connected to the first sidewall 312 of the first groove 310, which increases the structural strength of the second plate 309. During the use of the battery device 1, the heat exchange support 301 may be affected by various external forces and vibrations, such as the expansion and contraction of the battery module 2, and vibrations during equipment transportation and operation. The presence of the flow-blocking column 303 can disperse and bear some of the external forces, reduce the deformation and damage of the second plate 309, and improve the structural reliability of the entire heat exchange support 301.

[0079] The design of the flow-blocking column 303 extending along the third direction Z and fixedly connected at one end is relatively easy to implement during manufacturing. Common processing techniques such as casting, injection molding, or machining can be used to manufacture the second plate 309 and the flow-blocking column 303. This structure does not require complex molds or special processing equipment, reducing manufacturing costs and production difficulty.

[0080] like Figures 7 to 9 As shown, in some embodiments of this application, the maximum depth H of the first groove 310 recessed along the first direction X satisfies: 3mm ≤ H ≤ 5mm. Optionally, the maximum depth H of the first groove 310 recessed along the first direction X is: 3mm ≤ H ≤ 3.5mm. For example, H is: 3mm, 3.5mm, 4mm, 4.5mm, or 5mm.

[0081] When the depth H of the first groove 310 is within the range of 3mm-5mm, it can provide sufficient flow space and residence time for the heat exchange medium. This suitable depth allows the heat exchange medium to fully expand and flow within the channel, facilitating thorough heat exchange with the heat exchange surface of the heat exchange support 301. Compared to grooves with insufficient depth, this depth range increases the flow rate of the heat exchange medium while ensuring sufficient space for turbulence development within the channel. This enhances heat transfer efficiency, removes heat generated by the battery module 2 more quickly, effectively reduces battery temperature, and improves battery performance and lifespan.

[0082] This depth range helps ensure uniform distribution of the heat exchange medium within the heat exchange channel 302. If the recess depth is too small, the heat exchange medium may not be able to fully fill the channel, resulting in insufficient local heat exchange; while if the depth is too large, it may impede the flow of the heat exchange medium within the channel, creating dead zones. A depth of 3mm-5mm can balance the flow and distribution of the heat exchange medium, reduce temperature differences within the battery module 2, and ensure the overall stability and reliability of the battery module 2.

[0083] The first groove 310 has a depth of 3mm-5mm, which satisfies the heat exchange requirements while ensuring sufficient structural strength of the second plate 309. If the depth is too small, the heat exchange channel 302 may not be effectively formed; if the depth is too large, it will weaken the strength of the second plate 309, making it prone to deformation or even damage when subjected to external forces (such as the expansion and contraction of the battery module 2, equipment vibration, etc.). This depth range achieves a good balance between heat exchange function and structural strength, ensuring that the heat exchange support 301 maintains stable structural performance during long-term use.

[0084] A recess depth of 3mm-5mm is easily achievable using common manufacturing methods such as stamping, casting, or machining, all of which allow for relatively precise control of the depth of the first groove 310. This makes mass production of the heat exchange support 301 possible, reducing manufacturing difficulty and cost.

[0085] This application also provides a vehicle, including the battery device 1 described in the above embodiments. In the battery device 1 and vehicle provided by this application, the heat exchange support 301 not only supports the battery module 2 but also facilitates heat exchange for the battery module 2. When the temperature of the battery module 2 is too high, it lowers the temperature of the battery module 2. In low-temperature environments, it raises the temperature of the battery module 2, rapidly increasing its operating temperature and thus improving its efficiency. In the heat exchange assembly, flow-blocking columns 303 are provided, and these columns are alternately arranged on both sides of the heat exchange channel 302. As the heat exchange medium flows through the heat exchange channel 302, it continuously changes its flow direction, forming a continuous, tortuous flow path. This flow pattern increases the residence time of the heat exchange medium within the channel, resulting in more thorough contact between the heat exchange medium and the wall of the heat exchange channel 302, as well as the battery module 2. This improves the efficiency of heat transfer, enabling more effective removal of heat generated by the battery module 2 or providing heat to the battery module 2 at low temperatures. Furthermore, the special arrangement of the flow-blocking columns 303 promotes turbulence and enhances mixing of the heat exchange medium in the first direction X. In turbulent flow, the particle motion of the fluid is more intense and irregular, which disrupts the fluid boundary layer, ensuring thorough mixing of the heat exchange medium near and away from the battery module 2, resulting in faster and more uniform heat transfer. Simultaneously, enhanced mixing ensures the uniformity of the heat exchange medium temperature, reducing localized overheating or undercooling, and improving the overall temperature consistency of the battery device 1, thereby enhancing its operational stability.

[0086] The embodiments described above are not exhaustive, nor do they limit the application to the specific embodiments described herein. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A battery device, characterized in that, include: Battery module; The housing has a cavity for accommodating the battery module. The housing is located on one side of the battery module along a first direction. The housing includes a heat exchange support for supporting the battery module. A heat exchange channel extending along a second direction is formed within the heat exchange support for heat exchange of the battery module. The heat exchange channel is provided with a plurality of flow-blocking columns spaced apart along the second direction, which reduces the flow velocity of the heat exchange medium as it flows through the flow-blocking columns and forms turbulence and enhances mixing in the first direction. The first direction is perpendicular to the second direction.

2. The battery device according to claim 1, characterized in that, The heat exchange channel has a maximum dimension W along a third direction in a cross-section perpendicular to the second direction; the flow-blocking column has a maximum projected dimension W1 along the third direction in the cross-section. W and W1 satisfy: 0.05W≤W1≤0.1W; wherein the third direction is perpendicular to both the first direction and the second direction.

3. The battery device according to claim 2, characterized in that, In a cross-section perpendicular to the second direction, there is a gap between each flow-blocking column and the two sidewalls of the heat exchange channel along the third direction.

4. The battery device according to claim 2 or 3, characterized in that, The battery module includes multiple battery cells arranged sequentially along the second direction. The heat exchange support has two heat exchange channels arranged in parallel along the third direction. The heat exchange support also has a connecting channel located at the ends of the two heat exchange channels along the second direction, so as to form a series flow channel structure between the two heat exchange channels.

5. The battery device according to claim 4, characterized in that, The two heat exchange channels are respectively provided with fluid interfaces at their ends away from the connecting channel along the second direction, wherein one fluid interface is connected to the inlet pipe and the other fluid interface is connected to the outlet pipe.

6. The battery device according to claim 1 or 2, characterized in that, The heat exchange support includes: The first plate is positioned facing the battery module; The second plate is positioned opposite to the first plate. The second plate has two first grooves arranged at intervals along a third direction on its surface facing the first plate. The first grooves and the first plate together enclose the heat exchange channel. The surface of the second plate also has a plurality of protrusions extending toward the first plate. The protrusions abut against the first plate to form the flow-blocking column.

7. The battery device according to claim 6, characterized in that, The first direction is the height direction of the battery module. At least a portion of the first plate is in direct contact with the surface of the battery module. The second plate is disposed on the side of the first plate away from the battery module and is fixedly connected to the first plate to form the heat exchange channel.

8. The battery device according to claim 6, characterized in that, Each of the first grooves is provided with a plurality of flow-blocking columns spaced apart along the second direction, wherein, along the second direction, the flow-blocking columns located in odd-numbered positions are biased against the first sidewall of the first groove, and the flow-blocking columns located in even-numbered positions are biased against the second sidewall of the first groove opposite to the first sidewall.

9. The battery device according to claim 8, characterized in that, The flow-blocking pillars in the two first grooves are arranged in a mirror-symmetric manner along the second direction, wherein the bias direction of the flow-blocking pillars at odd positions in one of the first grooves is opposite to the bias direction of the flow-blocking pillars at corresponding positions in the other first groove.

10. The battery device according to claim 8, characterized in that, Each of the flow-blocking columns extends along a third direction, with a first end of the flow-blocking column fixedly connected to a first sidewall of the first groove, and a flow gap formed between the second end of the flow-blocking column and a second sidewall of the first groove. The first sidewall and the second sidewall are two sidewalls of the first groove that are arranged opposite to each other along a third direction.

11. The battery device according to any one of claims 7-10, characterized in that, The maximum depth H of the first groove along the first direction satisfies: 3mm≤H≤5mm.

12. A vehicle, characterized in that, Includes the battery device as described in any one of claims 1-11.

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