Heat dissipation structure, battery assembly with same and electric device

Abstract

The utility model discloses a kind of heat dissipation structure, battery assembly with it and electric device, it is related to battery technical field.Heat dissipation structure is equipped with heat dissipation area, heat dissipation structure is equipped with the heat exchange chamber of corresponding heat dissipation area setting, at least two heat exchange chambers are connected in parallel to flow cooling medium;Among them, each heat exchange chamber is equipped with heat exchange fin.According to the heat dissipation structure of the utility model embodiment, multiple heat load regions can be cooled simultaneously, which helps to achieve temperature balance between different modules and enhance overall heat dissipation capacity.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a heat dissipation structure, a battery assembly having the same, and an electrical device. Background Technology

[0002] With the development of new energy vehicles, in some vehicle designs, the electronic control module and power module are integrated into the power battery pack. The electronic control module generates heat at a rate much higher than the battery cell within a short period during operation. If the temperature runs out of control and exceeds the upper limit, it can lead to chip burnout, vehicle malfunction, or even personal injury. Existing heat dissipation structures using microchannels or stamped brazed cold plates are no longer sufficient to meet the cooling demands brought about by current high integration.

[0003] Therefore, there is room for improvement in the heat dissipation structure. Utility Model Content

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, the first aspect of the present invention aims to provide a heat dissipation structure capable of simultaneously cooling multiple heat-loaded areas, which helps to achieve temperature balance between different modules and enhances overall heat dissipation capacity.

[0005] The second aspect of this utility model is to provide a battery assembly having the above-mentioned heat dissipation structure.

[0006] The objective of the third aspect of this utility model is to provide an electrical device having the aforementioned battery assembly.

[0007] According to the heat dissipation structure of the first aspect of the present invention, the heat dissipation structure is provided with a heat dissipation area, and the heat dissipation structure is provided with a heat exchange chamber corresponding to the heat dissipation area, and at least two heat exchange chambers are arranged in parallel to circulate a cooling medium; wherein, each heat exchange chamber is provided with heat exchange fins.

[0008] According to the heat dissipation structure of this utility model embodiment, by setting parallel heat exchange chambers, independent cooling of different locations in the heat dissipation area can be achieved, improving the overall temperature uniformity of the heat dissipation area. The heat exchange capacity of the heat dissipation structure is enhanced by setting heat exchange fins, further improving the heat dissipation performance of the heat dissipation structure.

[0009] In some alternative embodiments, at least two of the heat exchange chambers have unequal projected areas on the heat dissipation zone.

[0010] According to some optional embodiments of the present invention, at least one of the heat exchange chambers is a flow-limiting chamber, the flow-limiting chamber having a flow-limiting inlet for the cooling medium to flow into and a flow-limiting outlet for the cooling medium to flow out; the extending direction of the heat exchange fins is the guiding direction of the heat exchange fins for the cooling medium; within the flow-limiting chamber, the guiding direction of at least one of the heat exchange fins forms an angle with the direction from the flow-limiting inlet to the flow-limiting outlet.

[0011] Furthermore, the flow-limiting chamber is provided with at least two heat exchange fins, and the at least two heat exchange fins are arranged sequentially from the flow-limiting inlet to the flow-limiting outlet.

[0012] Further optionally, the heat exchange fins in the flow-limiting chamber include alternating first heat exchange fins and second heat exchange fins; the flow direction of the first heat exchange fins is consistent with the direction from the flow-limiting inlet to the flow-limiting outlet; the flow direction of the second heat exchange fins is perpendicular to the direction from the flow-limiting inlet to the flow-limiting outlet.

[0013] In some optional embodiments, at least one of the heat exchange chambers is a flow-limiting chamber, the flow-limiting chamber having a flow-limiting inlet for the cooling medium to flow into and a flow-limiting outlet for the cooling medium to flow out; the inner wall of the flow-limiting chamber is provided with a throttling protrusion, the throttling protrusion being located between the flow-limiting inlet and the flow-limiting outlet.

[0014] According to some alternative embodiments, at least one of the heat exchange chambers is a free-flow chamber having at least one free-flow inlet for the cooling medium to flow into and at least one free-flow outlet for the cooling medium to flow out; the extension direction of the heat exchange fins is the guiding direction of the heat exchange fins to the cooling medium; only one heat exchange fin is provided in the free-flow chamber, and the guiding direction of the heat exchange fins is consistent with the direction from one of the free-flow inlets to one of the free-flow outlets.

[0015] According to some optional embodiments of the present invention, the heat exchange fins include first sidewalls and second sidewalls that are spaced apart and alternately arranged along a first direction, and both the first sidewalls and the second sidewalls extend along a second direction; the heat exchange fins also include first connecting walls and second connecting walls that are alternately arranged along the first direction, the first connecting wall being connected between one of the first sidewalls and the second sidewall, and the second connecting wall being connected between the second sidewall and another of the first sidewalls.

[0016] Furthermore, all the first connecting walls are located on the same plane and are fixedly connected to the inner wall of the heat exchange chamber; all the second connecting walls are located on the same plane and are fixedly connected to the inner wall of the heat exchange chamber.

[0017] Optionally, the heat exchange fins are provided with through holes, which are located on at least one of the first sidewall and the second sidewall.

[0018] Specifically, the heat exchange fins also include a protruding edge protruding from the edge of the through hole.

[0019] Specifically, the thickness of the heat exchange fin is d1, satisfying 0.1mm≤d1≤2mm; the extension direction of the heat exchange fin is the flow direction of the heat exchange fin to the cooling medium; the heat exchange fin includes multiple fin sidewalls, which are arranged at intervals along a direction perpendicular to the flow direction; the distance between adjacent fin sidewalls is d2, satisfying 0.2mm≤d2≤20mm.

[0020] According to some optional embodiments of the present invention, the heat dissipation structure further includes: a heat spreader plate, wherein the heat dissipation area is disposed on the heat spreader plate; and a flow channel plate, wherein the flow channel plate is connected to the side of the heat spreader plate away from the heat dissipation area, and the flow channel plate has a groove on the side facing the heat spreader plate, wherein the groove constitutes the heat exchange chamber.

[0021] Furthermore, the heat exchange fins are welded to at least one of the heat spreader plate and the flow channel plate.

[0022] Furthermore, it also includes: a connector; disposed on the heat exchange plate, and the connector includes: a total inlet and a total outlet; an inlet cross-connector, one end of which is connected to the inlet of each of the heat exchange chambers, and the other end of which is connected to the total inlet; and an outlet cross-connector, one end of which is connected to the outlet of each of the heat exchange chambers, and the other end of which is connected to the total outlet.

[0023] A battery assembly according to a second aspect of the present invention includes: a heat dissipation structure according to a first aspect of the present invention, wherein the heat dissipation area of ​​the heat dissipation structure is at least two to correspond to at least two heat exchange chambers; an electronic control module disposed on one of the heat dissipation areas; and a power supply module disposed on the other heat dissipation area.

[0024] The electrical device according to the third aspect embodiment of the present invention, and the battery assembly according to the second aspect embodiment of the present invention.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is an exploded view of the heat dissipation structure in some embodiments of this utility model;

[0028] Figure 2 This is a schematic diagram of the heat dissipation structure in some embodiments of this utility model;

[0029] Figure 3 This is a schematic diagram showing the arrangement of the flow-limiting chamber and the free-flow chamber in some embodiments of this utility model;

[0030] Figure 4 This is a schematic diagram showing the arrangement of heat exchange fins in the flow-limiting chamber in some embodiments of this utility model;

[0031] Figure 5 This is a schematic diagram of the internal structure of the flow channel plate in some embodiments of this utility model;

[0032] Figure 6 This is a schematic diagram of the structure of the heat exchange fins in some embodiments of this utility model;

[0033] Figure 7 This is a schematic diagram showing the positions of the through holes and protrusions on the heat exchange fins in some embodiments of this utility model;

[0034] Figure 8 This is a side view of the heat exchange fins in some embodiments of the present invention;

[0035] Figure 9 This is a top view of the heat exchange fins in some embodiments of the present invention;

[0036] Figure 10 This is a perspective view of the heat exchange fins in some embodiments of the present invention.

[0037] Figure label:

[0038] Heat dissipation structure 100

[0039] Heat dissipation plate 10, heat dissipation area 101

[0040] Flow channel plate 20, groove 201, heat exchange chamber 22, flow-limiting chamber 23, flow-limiting inlet 231, flow-limiting outlet 232, throttling protrusion 233, free-flow chamber 24, free-flow inlet 241, free-flow outlet 242.

[0041] Heat exchange fin 30, first heat exchange fin 301, second heat exchange fin 302, first sidewall 331, second sidewall 332, first connecting wall 35, second connecting wall 36, through hole 37, protruding edge 38.

[0042] Connector 40, Main Inlet 41, Main Outlet 42

[0043] Import cross-pilot 51, export cross-pilot 52. Detailed Implementation

[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0045] In the description of this utility model, it should be understood that the terms "upper," "lower," "vertical," "horizontal," "top," "inner," and "outer," 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 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0048] The following is for reference. Figures 1-10 Describes a heat dissipation structure 100 according to a first aspect embodiment of the present invention.

[0049] This heat dissipation structure 100 can be used to dissipate heat from heat-generating components, such as power batteries, energy storage battery packs, motor controllers, or power electronic devices. This embodiment describes the application of the heat dissipation structure 100 in a battery assembly as an example; further details will not be provided below.

[0050] like Figure 1As shown, the heat dissipation structure 100 is provided with a heat dissipation area 101. Here, the heat dissipation area 101 is used to contact the heat-generating component to achieve heat conduction and thus dissipate heat from the heat-generating component. Optionally, the shape, area, and size of the heat dissipation area 101 can be adjusted according to the shape, area, and size of the heat-generating component to ensure good fit and heat conduction efficiency between the two, thereby improving the adaptability of the heat dissipation structure 100.

[0051] In some optional embodiments, the heat dissipation area 101 contacts different locations of the battery assembly to achieve uniform heat dissipation for the entire battery assembly. For example, the battery assembly includes an electronic control module, a power module, and other heat-generating components located at different locations in the heat dissipation area 101. The same heat dissipation structure 100 can simultaneously cool these heat-generating components, thereby improving the thermal management efficiency of the integrated battery assembly.

[0052] The heat dissipation structure 100 includes heat exchange chambers 22 corresponding to the heat dissipation area 101. For example, when the heat dissipation structure 100 is applied to a battery assembly, the battery assembly has multiple different heat-generating components located at different positions within the heat dissipation area 101. In this case, the heat exchange chambers 22 in the heat dissipation structure 100 are configured as multiple, each corresponding to a heat-generating component of the battery assembly, to achieve independent cooling of different heat-generating components and improve heat dissipation efficiency and temperature field uniformity. Of course, this embodiment is not limited to this; multiple heat exchange chambers 22 may correspond to a larger heat-generating component, or a larger heat exchange chamber 22 may correspond to multiple heat-generating components. The specific configuration can be flexibly adjusted according to the layout of the heat-generating components and thermal management requirements, and this application does not impose any limitations.

[0053] Here, please combine Figure 2 At least two heat exchange chambers 22 are connected in parallel to circulate the cooling medium. Because the different heat exchange chambers 22 are connected in parallel, the cooling medium can flow into different heat exchange chambers 22 at the same time, thereby synchronously cooling different parts of the heat-generating components, making heat dissipation more uniform and efficient.

[0054] It is worth noting that in some traditional cooling structures, the heat exchange chambers are connected in series, with the cooling medium flowing through each chamber sequentially. This type of cooling structure cannot provide independent and efficient heat dissipation for high-heat areas. Because the cooling medium absorbs heat and its temperature rises after passing through the first heat exchange chamber, its heat dissipation capacity decreases when it enters subsequent heat exchange chambers, resulting in a weakened cooling effect in the rear areas and a tendency for localized overheating.

[0055] This application sets up multiple heat exchange chambers 22 in parallel, so that the cooling medium can enter different heat exchange chambers 22 at the same time, thereby achieving independent heat dissipation for different areas and helping to improve the temperature uniformity of the heat-generating components.

[0056] In some specific optional embodiments, the multiple heat exchange chambers 22 in the heat dissipation structure 100 can be arranged in areas with different heat generation according to the actual heat distribution. For example, some heat exchange chambers 22 can be arranged in high-heat areas with larger heat generation, while other heat exchange chambers 22 can be arranged in areas with lower heat generation. Alternatively, in some application scenarios where heat generation is relatively uniform, different heat exchange chambers 22 can also simultaneously dissipate heat to areas with relatively consistent heat distribution, thereby improving the overall temperature uniformity.

[0057] like Figure 1 As shown, each heat exchange chamber 22 is equipped with heat exchange fins 30. By setting the heat exchange fins 30, the contact area between the heat dissipation structure 100 and the cooling medium can be increased, thereby improving the heat exchange efficiency and making the heat dissipation effect of the heat dissipation structure 100 better.

[0058] In some alternative embodiments, please refer to Figure 1 At least two heat exchange chambers 22 have different projected areas on the heat dissipation area 101.

[0059] This allows for the setting of the heat dissipation coverage area for each heat exchange chamber 22 based on the actual heat generation at different locations of the heat-generating component. For example, for areas with higher heat generation, a heat exchange chamber 22 with a larger projected area can be used to increase the heat exchange contact surface and achieve stronger heat dissipation capacity; while for areas with lower heat generation, a heat exchange chamber 22 with a smaller projected area can be used to avoid wasting resources.

[0060] According to some optional embodiments of the present invention, such as Figures 1-3 As shown, at least one heat exchange chamber 22 is a flow-limiting chamber 23, which has a flow-limiting inlet 231 for the inflow of cooling medium and a flow-limiting outlet 232 for the outflow of cooling medium. The cooling medium enters from the flow-limiting inlet 231, flows within the flow-limiting chamber 23, and then flows out from the flow-limiting outlet 232, thereby completing the cooling of the corresponding heat-generating area.

[0061] The extension direction of the heat exchange fins 30 is the direction in which the heat exchange fins 30 guide the flow of the cooling medium. By adjusting the extension direction of the heat exchange fins 30, the flow direction of the cooling medium in the heat exchange chamber 22 can be guided, thus making it convenient for users to adjust the flow direction of the cooling medium according to actual needs.

[0062] Within the flow-limiting chamber 23, the flow direction of at least one heat exchange fin 30 forms an angle with the direction from the flow-limiting inlet 231 to the flow-limiting outlet 232. After entering the chamber, the cooling medium flows along the flow direction set by the heat exchange fin 30. Because this flow direction forms an angle with the mainstream direction from the flow-limiting inlet 231 to the flow-limiting outlet 232, the cooling medium's flow direction changes when passing through this angled region. This change in direction, to some extent, hinders the smooth flow of the cooling medium, thereby reducing its flow velocity and limiting the flow rate of the cooling medium.

[0063] Compared to other heat exchange chambers 22 without flow-limiting structures, the cooling medium flow rate in the flow-limiting chamber 23 is relatively slower. This avoids excessive cooling medium flow in low-heat areas, thus preventing resource waste and excessive temperature drop. At the same time, it helps improve the overall temperature uniformity of the heat dissipation structure 100.

[0064] Furthermore, in combination Figure 3 and Figure 4 The flow-limiting chamber 23 is provided with at least two heat exchange fins 30, and the at least two heat exchange fins 30 are arranged sequentially from the flow-limiting inlet 231 to the flow-limiting outlet 232.

[0065] During the flow of the cooling medium, it passes through multiple heat exchange fins 30. The cooling medium is constantly disturbed and its flow direction is changed, affecting its flow velocity within the flow-limiting chamber 23. This application does not limit the number of heat exchange fins 30 installed within the flow-limiting chamber 23; it can be adjusted according to requirements. When a reduction in flow velocity is needed, the number of heat exchange fins 30 can be appropriately increased; when a increase in flow velocity is needed, the number of heat exchange fins 30 can be decreased.

[0066] In addition, the flow rate of the cooling medium can be further adjusted by changing the angle between the flow direction in the heat exchange fins 30 and the flow direction from the flow-limiting inlet 231 to the flow-limiting outlet 232. For example, the larger the angle, the stronger the disturbance and resistance encountered by the cooling medium during flow, and the slower the flow rate; the smaller the angle, the smoother the flow and the relatively higher the flow rate. More optimally, the flow-limiting chamber 23 is provided with multiple heat exchange fins 30, and each pair of adjacent heat exchange fins 30 is provided with an angle to guide the cooling medium to turn multiple times during flow, enhance disturbance, and achieve further control over the flow rate of the cooling medium.

[0067] In the above technical solution, the heat exchange fins 30 and the flow-limiting chamber 23 are not integrated. Compared with an integrated part, the flow resistance of the separately set heat exchange fins 30 is greater, so the flow rate can be further reduced.

[0068] Alternatively, the heat exchange fins 30 within the flow-limiting chamber 23 include alternately arranged first heat exchange fins 301 and second heat exchange fins 302. The flow direction of the first heat exchange fins 301 is consistent with the direction from the flow-limiting inlet 231 to the flow-limiting outlet 232. Here, the first heat exchange fins 301 help guide the cooling medium smoothly into the flow-limiting chamber 23, reducing resistance at the inlet.

[0069] The flow direction of the second heat exchange fin 302 is perpendicular to the direction from the flow-limiting inlet 231 to the flow-limiting outlet 232. This arrangement can create lateral disturbances during the flow of the cooling medium, change its flow state, thereby reducing the flow velocity of the cooling medium and achieving regulation of the cooling medium flow rate.

[0070] In some alternative embodiments, such as Figure 5 As shown, at least one heat exchange chamber 22 is a flow-limiting chamber 23, which has a flow-limiting inlet 231 for the inflow of cooling medium and a flow-limiting outlet 232 for the outflow of cooling medium. A throttling protrusion 233 is provided on the inner wall of the flow-limiting chamber 23, which is located between the flow-limiting inlet 231 and the flow-limiting outlet 232.

[0071] In the above technical solution, the throttling protrusion 233 is used to change the flow state of the cooling medium, increase the degree of disturbance of the cooling medium during the flow process, reduce the flow velocity, realize the active control of the cooling medium flow rate in the flow-limiting chamber 23 by the heat dissipation structure 100, avoid the situation of local area cooling, and improve the adaptability and adjustment accuracy of the heat dissipation system under different heat load conditions.

[0072] Optionally, the throttling protrusion 233 and the inner wall of the flow-limiting chamber 23 can be formed in one step. For example, the throttling protrusion 233 and the inner wall of the flow-limiting chamber 23 can be integrally cast. Of course, this utility model is not limited to this. The throttling protrusion 233 can also be formed after the inner wall of the flow-limiting chamber 23 has been formed. In this case, the inner wall of the flow-limiting chamber 23 and the throttling protrusion 233 can be formed after two processing steps.

[0073] Alternatively, the shape of the throttling protrusion 233 can be a regular or irregular shape such as a rectangle, square, triangle, trapezoid, or semicircle. The throttling protrusion 233 can also be a strip structure, which can be arranged along the extension direction of the flow-limiting chamber 23 or perpendicular to the extension direction. Different arrangements will produce different control effects on the flow rate of the cooling medium. For example, strip protrusions arranged along the flow direction provide less resistance to the flow of the cooling medium; while vertically arranged strip protrusions can enhance turbulence and create greater resistance to the flow of the cooling medium.

[0074] According to some alternative embodiments, in combination Figure 5At least one heat exchange chamber 22 is a free-flow chamber 24, which has at least one free-flow inlet 241 for the inflow of cooling medium and at least one free-flow outlet 242 for the outflow of cooling medium. The cooling medium enters from the free-flow inlet 241, flows within the free-flow chamber 24, and then flows out from the free-flow outlet 242, thereby completing the cooling of the corresponding heat-generating area.

[0075] The extension direction of the heat exchange fin 30 is the direction in which the heat exchange fin 30 guides the flow of the cooling medium. Only one heat exchange fin 30 is provided in the flow chamber 24, and the direction of the flow of the heat exchange fin 30 is consistent with the direction from a flow inlet 241 to a flow outlet 242.

[0076] The heat exchange fins 30 in the flow chamber 24 help guide the cooling medium to flow smoothly and reduce flow resistance. At the same time, the surface of the heat exchange fins 30 effectively increases the heat exchange area between the cooling medium and the heat dissipation structure 100.

[0077] According to some such Figure 6 In the optional embodiment shown, the heat exchange fin 30 includes a first sidewall 331 and a second sidewall 332 that are spaced apart and alternately arranged along a first direction, and both the first sidewall 331 and the second sidewall 332 extend along a second direction; the heat exchange fin 30 also includes a first connecting wall 35 and a second connecting wall 36 that are alternately arranged along the first direction, the first connecting wall 35 connecting between a first sidewall 331 and a second sidewall 332, and the second connecting wall 36 connecting between a second sidewall 332 and another first sidewall 331.

[0078] In this embodiment, the heat exchange fins 30 form a continuously undulating wave-shaped structure. The connection structure of the first sidewall 331, the second sidewall 332, the first connecting wall 35, and the second connecting wall 36 enhances the structural strength of the heat exchange fins 30 themselves. Simultaneously, the wave-shaped structure increases the contact area with the cooling medium, thereby effectively improving heat dissipation performance.

[0079] Furthermore, all first connecting walls 35 are located on the same plane and fixedly connected to the inner wall of the heat exchange chamber 22. All second connecting walls 36 are located on the same plane and fixedly connected to the inner wall of the heat exchange chamber 22. The first connecting walls 35 and the second connecting walls 36 are respectively fixed to two different inner walls of the heat exchange chamber 22, thereby forming a stable support within the heat exchange chamber 22. This arrangement not only enhances the structural stability of the heat exchange fins 30 but also improves the structural strength of the heat exchange chamber 22.

[0080] In some specific embodiments, the heat exchange chamber 22 includes a first inner wall and a second inner wall disposed opposite to each other. All first connecting walls 35 are fixedly connected to the first inner wall, and all second connecting walls 36 are fixedly connected to the second inner wall. This arrangement allows the corrugated heat exchange fins 30 to form uniform and stable support within the heat exchange chamber 22.

[0081] In some optional embodiments, the first connecting wall 35 and the second connecting wall 36 are fixedly connected to the inner wall of the heat exchange chamber 22 by welding to further ensure a stable connection between the heat exchange fins 30 and the heat exchange chamber 22.

[0082] Alternatively, the heat exchange fins 30 are provided with through holes 37, which are located on at least one of the first sidewall 331 and the second sidewall 332. In this way, the cooling medium can pass through the sidewall with the through holes 37, thereby increasing the turbulence effect, increasing the Reynolds number, distributing the flow rate, etc., and improving the heat exchange efficiency of the cooling medium.

[0083] In addition, the through-hole 37 helps to reduce the weight of the heat exchange fins 30.

[0084] Here, the shape of the through hole 37 can be a regular or irregular shape such as a circle, triangle, square, or trapezoid.

[0085] Specifically, in combination Figures 7-10 The heat exchange fins 30 also include a protruding edge 38 that protrudes from the edge of the through hole 37. The protruding edge 38 is disposed along the edge of the through hole 37 and protrudes in the direction of the cooling medium flow. In this way, when the cooling medium flows, it will come into contact with the protruding edge 38, thereby increasing the heat exchange area with the heat exchange fins 30 and improving the heat dissipation efficiency.

[0086] In this application, the protruding edge 38 can be designed as a quarter-spherical shell, or it can be designed as a regular or irregular shape such as a rectangle, ellipse, or triangle. By placing the protruding edge 38 of the above shapes at the edge of the through hole 37, the surface of the protruding edge 38 can be fully utilized to contact the cooling medium, thereby increasing the heat exchange efficiency.

[0087] For specific options, please refer to [link / reference]. Figure 6The thickness of the heat exchange fins 30 is d1, satisfying 0.1mm ≤ d1 ≤ 2mm. For example, d1 can be 0.1mm, 0.3mm, 0.5mm, 1mm, 1.5mm, or 2mm. Controlling the thickness of the heat exchange fins 30 within the range of 0.1mm-2mm allows for the arrangement of more heat exchange fins 30 per unit volume within the heat exchange chamber 22, thus increasing the total heat exchange area. A higher heat exchange area means that a smaller heat exchange chamber 22 can be used while maintaining the same heat exchange performance. This not only effectively reduces the space occupied by the heat dissipation structure 100 while ensuring heat exchange efficiency, but also facilitates a lightweight design of the overall structure, making the heat dissipation structure 100 of this application more suitable for applications with space and weight constraints.

[0088] The extension direction of the heat exchange fin 30 is the flow direction of the heat exchange fin 30 to the cooling medium. The heat exchange fin 30 includes multiple fin sidewalls 33, which are arranged at intervals in a direction perpendicular to the flow direction. The distance between adjacent fin sidewalls 33 is d2, which satisfies 0.2mm≤d2≤20mm.

[0089] It is worth noting that flow channels are formed between adjacent fin sidewalls 33 for the flow of cooling medium. In this embodiment, the distance between adjacent fin sidewalls 33 is controlled within the range of 0.2mm-20mm, which not only ensures the smooth flow of cooling medium in the flow channels, but also facilitates the arrangement of more flow channels in the heat exchange chamber 22 per unit volume, thereby ensuring the heat exchange capacity of the heat dissipation structure 100.

[0090] In some optional embodiments, the fin sidewalls 33 are corrugated, S-shaped, or serrated along the flow direction of the cooling medium. On the one hand, this type of structure can enhance the fluid turbulence of the cooling medium, break the boundary layer formed by the cooling medium during flow, improve the local heat transfer coefficient, and thus improve the overall heat exchange efficiency. On the other hand, by changing the shape of the flow channel, the flow path of the cooling medium can be extended, increasing the heat exchange contact time within a limited space, and further enhancing the heat exchange effect.

[0091] In some alternative embodiments, combined with Figure 3The length of the free-flow chamber 24 is L1, and the width is K1. The length of the heat exchange fins 30 in the free-flow chamber 24 is L1', and the fin width is K1'. The length of the flow-limiting chamber 23 is L2, and the width is K2. The sum of the lengths of all the heat exchange fins 30 in the flow-limiting chamber 23 is L2', and the fin width is K2'. A certain distance, d3, is left between the perimeter of the heat exchange fins 30 and the inner wall of the corresponding heat exchange chamber 22, satisfying 0≤d3≤a1, where a1=min{(L1-L1') / 2,(L2-L2') / 2,(K1-K1') / 2,(K2-K2') / 2}. The value of d3 is between 0 and a1, which is beneficial for balancing the flow resistance and heat exchange efficiency of the cooling medium.

[0092] According to some optional embodiments of the present invention, such as Figure 1 As shown, the heat dissipation structure 100 also includes a heat spreader 10 and a flow channel plate 20. The heat dissipation area 101 is disposed on the heat spreader 10. The flow channel plate 20 is connected to the side of the heat spreader 10 away from the heat dissipation area 101, and the flow channel plate 20 has a groove 201 on the side facing the heat spreader 10, the groove 201 forming a heat exchange chamber 22.

[0093] The heat spreader 10 serves as a heat transfer component, which is in close contact with the heat source and is suitable for absorbing the heat from the heat source and spreading the heat to the surroundings.

[0094] The flow channel plate 20 is disposed on one side of the heat exchange plate 10, specifically connected to the side away from the heat source, and the groove 201 inside it forms a heat exchange chamber 22. After the heat exchange plate 10 and the flow channel plate 20 are connected and encapsulated, the cooling medium is contained in the heat exchange chamber 22 and absorbs the heat conducted by the heat exchange plate 10 during the flow process to achieve the heat exchange function.

[0095] Alternatively, the shape and size of the heat exchange plate 10 and the flow channel plate 20 are adapted to the heat source. This ensures that there is a good contact area and heat transfer efficiency between the heat exchange plate 10 and the heat source, while making the heat exchange chamber 22 formed by the flow channel plate 20 more compact and reasonable in spatial layout.

[0096] Furthermore, the heat exchange fins 30 are welded to at least one of the heat spreader plate 10 and the flow channel plate 20.

[0097] Welding facilitates a strong bond between the heat exchange fins 30 and the heat spreader plate 10 and / or the flow channel plate 20. At the same time, welding the heat exchange fins 30 to the heat spreader plate 10 or the flow channel plate 20 also acts as a reinforcing rib, making the plate more resistant to pressure and bursting, and improving the overall mechanical stability of the heat dissipation structure 100.

[0098] Specifically, the welding connection of the heat exchange fins 30 can prevent the fins from loosening or falling off due to factors such as vibration, thermal circulation, or fluid impact, ensuring that the heat dissipation structure 100 can maintain good working condition under complex operating conditions. In addition, welding can also enhance the thermal contact performance between the fins and the mounting surface, reduce the interfacial thermal resistance, and thus improve the overall heat exchange efficiency.

[0099] Optionally, the heat spreader 10 and the flow channel plate 20 are made of high thermal conductivity materials, such as metal plates. By setting the main body of the heat dissipation structure 100 as a metal plate, it has good thermal conductivity, effectively improving the efficiency of heat transfer from the heat source to the cooling medium, while ensuring the overall strength of the heat dissipation structure 100 and improving its service life.

[0100] In some specific embodiments, the heat exchange fins 30 further include alternating first connecting walls 35 and second connecting walls 36 along a first direction. All first connecting walls 35 are located on the same plane and welded to the heat spreader 10, and all second connecting walls 36 are located on the same plane and welded to the flow channel plate 20.

[0101] Optionally, the system also includes a connector 40, an inlet cross-connector 51, and an outlet cross-connector 52. The connector 40 is disposed on the heat exchanger 10 and includes a main inlet 41 and a main outlet 42. The connector 40 is used to achieve unified input and output of the cooling medium. Specifically, the cooling medium in the heat exchange chamber 22 enters the heat exchange chamber 22 through the main inlet 41, absorbs heat conducted by the heat exchanger 10 during its flow, and then exits through the main outlet 42. Furthermore, the connector 40 is also connected to an external cooling system, allowing the cooled medium, after absorbing heat, to flow out of the heat exchange chamber 22 and enter external equipment for cooling. The cooled medium then re-enters the heat exchange chamber 22 through the main inlet 41 of the connector 40, thus forming a complete cooling circulation path.

[0102] One end of the inlet cross-connector 51 is connected to the inlet of each heat exchange chamber 22, and the other end is connected to the main inlet 41. One end of the outlet cross-connector 52 is connected to the outlet of each heat exchange chamber 22, and the other end is connected to the main outlet 42.

[0103] By setting up inlet jumper 51 and outlet jumper 52, the cooling medium can be distributed and recovered among multiple heat exchange chambers 22, achieving circulating flow of the cooling medium in different heat exchange chambers 22. At the same time, setting up inlet jumper 51 and outlet jumper 52 also helps simplify the pipeline connection structure and facilitates later maintenance.

[0104] Alternatively, the import jumper 51 and the export jumper 52 can be made of metal pipes, rubber pipes, plastic pipes, etc.

[0105] A battery assembly according to a second aspect embodiment of the present invention includes: a heat dissipation structure 100, an electronic control module, and a power supply module. The heat dissipation structure 100 has at least two heat dissipation areas 101 corresponding to at least two heat exchange chambers 22. The electronic control module is disposed on one heat dissipation area 101. The power supply module is disposed on another heat dissipation area 101. Here, the heat dissipation structure 100 is the heat dissipation structure 100 in the first aspect embodiment of this application.

[0106] It is worth noting that the heat dissipation structure 100 has multiple different heat dissipation zones 101, which are corresponding to different heat exchange chambers 22. This helps to achieve zoned and independent heat dissipation for different heat-generating components. For example, high-heat components can be placed in the heat dissipation zone 101 corresponding to the free-flow chamber 24 to achieve a stronger cooling effect; while low-heat components can be placed in the heat dissipation zone 101 corresponding to the flow-limiting chamber 23, so as to reasonably match their heat dissipation needs. Through this differentiated setting, not only can the overall heat dissipation performance be optimized, but also resource waste can be avoided.

[0107] In some specific embodiments, the electronic control module is located in the heat dissipation area 101 corresponding to the free flow chamber 24, and the free flow chamber 24 cools the electronic control module to ensure that the control circuit operates stably within a safe temperature range; the power supply module is located in the heat dissipation area 101 corresponding to the current limiting chamber 23, and the current limiting chamber 23 is used to dissipate the heat generated during operation.

[0108] By adopting the improved heat dissipation structure 100, the heat dissipation effect of the battery module is enhanced. Specifically, the heat dissipation structure 100 can achieve differentiated heat dissipation management for different heat source areas, ensuring the heat dissipation effect of high-heat areas while avoiding overcooling of low-heat areas, thereby effectively avoiding waste of cooling resources.

[0109] An electrical device according to a third aspect embodiment of the present invention, and a battery assembly according to a second aspect embodiment of the present invention.

[0110] It should be noted that the electrical devices mentioned here include, but are not limited to, new energy vehicles, electric toys, power tools, ships, and spacecraft. New energy vehicles can be pure electric vehicles, range-extended electric vehicles, etc. A battery pack is installed within the vehicle. Here, the battery pack can be used to power the vehicle; for example, the battery pack can serve as the vehicle's operating power source. The vehicle may also include a controller and a motor. The controller is used to control the battery pack to supply power to the motor, for example, for the vehicle's starting, navigation, and operating power needs. In some embodiments of this application, the battery pack can not only serve as the vehicle's operating power source but also as the vehicle's drive power source, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0111] By adopting improved battery components, it is easier to improve the heat dissipation and thermal management capabilities of electrical devices, enabling targeted cooling of different heat-generating areas, ensuring the operational stability of electrical devices, and avoiding resource waste.

[0112] The following is for reference. Figure 1 , Figures 3-10 The heat dissipation structure 100 according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0113] Reference Figure 1 The heat dissipation structure 100 includes: a heat spreader 10 and a flow channel plate 20.

[0114] The heat dissipation area 101 is provided on the heat dissipation plate 10.

[0115] The flow channel plate 20 is connected to the side of the heat exchange plate 10 away from the heat dissipation area 101. The flow channel plate 20 has a groove 201 on the side facing the heat exchange plate 10, and the groove 201 forms the heat exchange chamber 22.

[0116] The heat dissipation structure 100 has two heat exchange chambers 22, which are arranged in parallel to allow the cooling medium to circulate.

[0117] The two heat exchange chambers 22 have different projected areas on the heat dissipation area 101.

[0118] One heat exchange chamber 22 is a flow-limiting chamber 23, which has a flow-limiting inlet 231 for the inflow of cooling medium and a flow-limiting outlet 232 for the outflow of cooling medium. The extension direction of the heat exchange fins 30 is the direction in which the heat exchange fins 30 guide the flow of cooling medium.

[0119] Within the flow-limiting chamber 23, the flow direction of at least one heat exchange fin 30 forms an angle with the direction from the flow-limiting inlet 231 to the flow-limiting outlet 232.

[0120] The flow-limiting chamber 23 is provided with multiple heat exchange fins 30, and the multiple heat exchange fins 30 are arranged sequentially from the flow-limiting inlet 231 to the flow-limiting outlet 232.

[0121] Reference Figure 3 The heat exchange fins 30 in the flow-limiting chamber 23 include alternating first heat exchange fins 301 and second heat exchange fins 302.

[0122] Reference Figure 4 The flow direction of the first heat exchange fin 301 is consistent with the direction from the flow-limiting inlet 231 to the flow-limiting outlet 232.

[0123] The flow direction of the second heat exchange fin 302 is perpendicular to the direction from the flow-limiting inlet 231 to the flow-limiting outlet 232.

[0124] Reference Figure 5 The inner wall of the flow-limiting chamber 23 is provided with a throttling protrusion 233, which is located between the flow-limiting inlet 231 and the flow-limiting outlet 232.

[0125] Another heat exchange chamber 22 is a free-flow chamber 24, which has at least one free-flow inlet 241 for the inflow of cooling medium and at least one free-flow outlet 242 for the outflow of cooling medium.

[0126] The extension direction of the heat exchange fin 30 is the direction in which the heat exchange fin 30 guides the flow of the cooling medium.

[0127] The flow chamber 24 is equipped with only one heat exchange fin 30, and the flow direction of the heat exchange fin 30 is consistent with the direction from a flow inlet 241 to a flow outlet 242.

[0128] Reference Figure 6 The heat exchange fins 30 include a first sidewall 331 and a second sidewall 332 that are spaced apart and alternately arranged along a first direction, and both the first sidewall 331 and the second sidewall 332 extend along the second direction.

[0129] The heat exchange fins 30 also include alternating first connecting walls 35 and second connecting walls 36 along a first direction. The first connecting wall 35 is connected between a first side wall 331 and a second side wall 332, and the second connecting wall 36 is connected between the second side wall 332 and another first side wall 331.

[0130] All the first connecting walls 35 are located on the same plane and are fixedly connected to the inner wall of the heat exchange chamber 22.

[0131] All the second connecting walls 36 are located on the same plane and are fixedly connected to the inner wall of the heat exchange chamber 22.

[0132] The heat exchange fins 30 are provided with through holes 37, which are located on the first sidewall 331 and the second sidewall 332.

[0133] Reference Figures 7-10 The heat exchange fins 30 also include a protruding edge 38 protruding from the edge of the through hole 37.

[0134] Other components of the heat dissipation structure 100 according to the embodiments of the present invention, such as the heat spreader 10 and the flow channel plate 20, as well as their operation, are known to those skilled in the art and will not be described in detail here.

[0135] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. 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.

[0136] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat dissipation structure, characterized in that, The heat dissipation structure is provided with a heat dissipation area, and the heat dissipation structure is provided with a heat exchange chamber corresponding to the heat dissipation area. At least two heat exchange chambers are arranged in parallel to allow the cooling medium to flow. Each of the heat exchange chambers is equipped with heat exchange fins.

2. The heat dissipation structure according to claim 1, characterized in that, At least two of the heat exchange chambers have unequal projected areas on the heat dissipation zone.

3. The heat dissipation structure according to claim 1, characterized in that, At least one of the heat exchange chambers is a flow-limiting chamber, the flow-limiting chamber having a flow-limiting inlet for the cooling medium to flow into and a flow-limiting outlet for the cooling medium to flow out. The extension direction of the heat exchange fins is the direction in which the heat exchange fins guide the flow of the cooling medium. Within the flow-limiting chamber, the flow direction of at least one of the heat exchange fins forms an angle with the direction from the flow-limiting inlet to the flow-limiting outlet.

4. The heat dissipation structure according to claim 3, characterized in that, The flow-limiting chamber is provided with at least two heat exchange fins, and the at least two heat exchange fins are arranged sequentially from the flow-limiting inlet to the flow-limiting outlet.

5. The heat dissipation structure according to claim 4, characterized in that, The heat exchange fins in the flow-limiting chamber include alternating first and second heat exchange fins. The flow direction of the first heat exchange fin is consistent with the direction from the flow-limiting inlet to the flow-limiting outlet; The flow direction of the second heat exchange fin is perpendicular to the direction from the flow-limiting inlet to the flow-limiting outlet.

6. The heat dissipation structure according to claim 1, characterized in that, At least one of the heat exchange chambers is a flow-limiting chamber, the flow-limiting chamber having a flow-limiting inlet for the cooling medium to flow into and a flow-limiting outlet for the cooling medium to flow out. The inner wall of the flow-limiting chamber is provided with a throttling protrusion, which is located between the flow-limiting inlet and the flow-limiting outlet.

7. The heat dissipation structure according to claim 1, characterized in that, At least one of the heat exchange chambers is a free-flow chamber, the free-flow chamber having at least one free-flow inlet for the cooling medium to flow into and at least one free-flow outlet for the cooling medium to flow out. The extension direction of the heat exchange fins is the direction in which the heat exchange fins guide the flow of the cooling medium. The flow chamber is provided with only one heat exchange fin, and the flow direction of the heat exchange fin is consistent with the direction from a flow inlet to a flow outlet.

8. The heat dissipation structure according to any one of claims 1-7, characterized in that, The heat exchange fins include first and second sidewalls that are spaced apart and alternately arranged along a first direction, and both the first and second sidewalls extend along the second direction. The heat exchange fins further include alternating first connecting walls and second connecting walls along the first direction, wherein the first connecting wall is connected between a first side wall and a second side wall, and the second connecting wall is connected between the second side wall and another first side wall.

9. The heat dissipation structure according to claim 8, characterized in that, All of the first connecting walls are located on the same plane and are fixedly connected to the inner wall of the heat exchange chamber; All of the second connecting walls are located on the same plane and are fixedly connected to the inner wall of the heat exchange chamber.

10. The heat dissipation structure according to claim 8, characterized in that, The heat exchange fins are provided with through holes, which are located on at least one of the first sidewall and the second sidewall.

11. The heat dissipation structure according to claim 10, characterized in that, The heat exchange fins also include a raised edge protruding from the edge of the through hole.

12. The heat dissipation structure according to any one of claims 1-7, characterized in that, The thickness of the heat exchange fins is d1, which satisfies 0.1mm≤d1≤2mm; The extension direction of the heat exchange fins is the flow direction of the heat exchange fins to the cooling medium. The heat exchange fins include multiple fin sidewalls, which are arranged at intervals along a direction perpendicular to the flow direction. The distance between adjacent fin sidewalls is d2, which satisfies 0.2mm≤d2≤20mm.

13. The heat dissipation structure according to any one of claims 1-7, characterized in that, The heat dissipation structure also includes: A heat dissipation plate, wherein the heat dissipation area is disposed on the heat dissipation plate; A flow channel plate is connected to the side of the heat exchange plate away from the heat dissipation area. The flow channel plate has a groove on the side facing the heat exchange plate, and the groove forms the heat exchange chamber.

14. The heat dissipation structure according to claim 13, characterized in that, The heat exchange fins are welded to at least one of the heat spreader plate and the flow channel plate.

15. The heat dissipation structure according to claim 13, characterized in that, Also includes: Connector; The connector is disposed on the heat exchange plate and includes a main inlet and a main outlet; An inlet cross-connector is provided, with one end connected to the inlet of each of the heat exchange chambers and the other end connected to the main inlet. An outlet crossover is provided, with one end connected to the outlet of each of the heat exchange chambers and the other end connected to the main outlet.

16. A battery assembly, characterized in that, include: According to any one of claims 1-15, the heat dissipation structure has at least two heat dissipation zones corresponding to at least two heat exchange chambers; The electronic control module is mounted on one of the aforementioned heat dissipation areas; The power module is located on another heat dissipation area.

17. An electrical device, characterized in that, The battery assembly according to claim 16.

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