Battery box body integrated with liquid cooling function, battery pack and vehicle

Abstract

The utility model provides a battery box body integrated with a liquid cooling function, a battery pack and a vehicle, and relates to the technical field of batteries. The utility model provides a battery box integrated with a liquid cooling function. The battery box comprises a box body, a liquid cooling plate and a bottom plate, the box body is provided with a mounting opening, the edge, facing the outer side of the box body, of the mounting opening is provided with a circle of mounting groove, the appearance of the mounting groove is matched with that of the liquid cooling plate, the liquid cooling plate and the bottom plate are arranged in the mounting groove, the first face of the liquid cooling plate is welded to the bottom of the mounting groove, and the bottom plate is welded to the second face of the liquid cooling plate. The bottom plate and the box body are welded together, and the first surface and the second surface are two opposite surfaces of the liquid cooling plate. The utility model provides a battery box body integrated with a liquid cooling function, a battery pack and a vehicle, which are compact in structure and small in occupied space.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a kind of battery box of integrated liquid cooling function, battery pack and vehicle. BACKGROUND

[0002] Battery box makes a layer of protective structure outside battery, mainly play the role of protecting battery, integration and fixed battery component and ensure electrical safety, provide fixed and integrated space for battery and various electrical elements, while relying on electromagnetic shielding and insulation protection and other functions guarantee the electrical safety of battery system.In prior art, battery box is generally placed on liquid cooling plate, and the battery in battery box is cooled by liquid cooling plate, however, the setting mode structure of this box and liquid cooling plate is loose, and occupies larger space. SUMMARY

[0003] In order to solve at least one problem mentioned in the background art, the utility model provides a kind of battery box of integrated liquid cooling function, battery pack and vehicle, and the structure is compact, and the space occupied is small.

[0004] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0005] Firstly, the utility model provides a kind of battery box of integrated liquid cooling function, including box body, liquid cooling plate and bottom plate;Box body has installation port, and the edge of installation port towards the outside of box body has a circle of installation groove, the shape of installation groove and the shape of liquid cooling plate are matched, liquid cooling plate and bottom plate are all set in installation groove, the first surface of liquid cooling plate is welded to the bottom of installation groove, bottom plate is welded to the second surface of liquid cooling plate, and bottom plate and box body are welded together, wherein, the first surface and the second surface are two opposite surfaces of liquid cooling plate.

[0006] As an optional implementation, installation groove is stepped groove, and installation groove includes first stepped groove and second stepped groove, liquid cooling plate is arranged in first stepped groove, and bottom plate is arranged in second stepped groove.

[0007] As an optional implementation, second stepped groove surrounds the periphery of first stepped groove, and the projection area of bottom plate along the thickness direction of itself is greater than the projection area of liquid cooling plate along the thickness direction of itself.

[0008] As an optional implementation, the depth of second stepped groove is greater than the depth of first stepped groove.

[0009] As an optional implementation, bottom plate includes a plurality of reinforcing ribs arranged at intervals.

[0010] As an optional implementation, liquid cooling plate has flow channel for cooling liquid to flow through, and reinforcing ribs and flow channel are arranged in a staggered manner.

[0011] As an optional implementation, the thickness of the edge of the bottom plate is less than the depth of the second step groove.

[0012] As an optional implementation, there is a spacing between the edge of the bottom plate and the side surface of the second step groove.

[0013] In a second aspect, the utility model also provides a battery pack, including the integrated liquid cooling function's battery box of first aspect.

[0014] In a third aspect, the utility model also provides a vehicle, including the battery pack in the second aspect.

[0015] The integrated liquid cooling function's battery box provided by the utility model comprises a box body, a liquid cooling plate and a bottom plate, the box body is provided with a mounting port, the edge of the mounting port towards the outside of the box body is provided with a mounting groove, the shape of the mounting groove is matched with the shape of the liquid cooling plate, the liquid cooling plate and the bottom plate are arranged in the mounting groove, the first surface of the liquid cooling plate is welded to the bottom of the mounting groove, the bottom plate is welded to the second surface of the liquid cooling plate, and the bottom plate and the box body are welded together, wherein the first surface and the second surface are two opposite surfaces of the liquid cooling plate. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 It is an exploded view of the integrated liquid cooling function's battery box provided by the utility model embodiment;

[0018] Figure 2 It is a front view of the integrated liquid cooling function's battery box; Figure 1

[0019] Figure 3 It is a top view of the integrated liquid cooling function's battery box; Figure 1

[0020] Figure 4 It is a sectional view of the integrated liquid cooling function's battery box provided by the utility model embodiment;

[0021] Figure 5 It is​​Figure 4 Enlarged view at A;

[0022] Figure 6 A cross-sectional view of a box body in a battery box body with integrated liquid cooling function provided by the embodiments of the present application;

[0023] Figure 7 To Figure 6 Enlarged view at B.

[0024] Legend:

[0025] 100 - battery box body;

[0026] 110 - box body;

[0027] 111 - mounting opening;

[0028] 112 - mounting groove;

[0029] 1121 - first stepped groove;

[0030] 1122 - second stepped groove;

[0031] 120 - liquid cooling plate;

[0032] 130 - bottom plate;

[0033] 131 - reinforcing rib. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] In the application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0036] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0037] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0038] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0039] The battery enclosure serves as a protective layer for the battery, primarily protecting the battery, integrating and securing the battery components, and ensuring electrical safety. In existing technologies, the battery enclosure is typically placed on a liquid cooling plate to cool the batteries inside. However, this enclosure and cooling plate configuration is structurally loose and occupies a significant amount of space.

[0040] In view of this, the present invention provides a battery enclosure with integrated liquid cooling function, including an enclosure body, a liquid cooling plate, and a base plate. The enclosure body has a mounting opening, and a mounting groove is formed around the edge of the mounting opening facing the outer side of the enclosure body. The shape of the mounting groove matches the shape of the liquid cooling plate. Both the liquid cooling plate and the base plate are disposed in the mounting groove. The first side of the liquid cooling plate is welded to the bottom of the mounting groove, and the base plate is welded to the second side of the liquid cooling plate. The base plate and the enclosure body are welded together. The first and second sides are two opposite sides of the liquid cooling plate. This allows the enclosure body, liquid cooling plate, and base plate to be integrated together, forming a stable whole, making the structure of each component more compact and reducing space occupation.

[0041] Figure 1 An exploded view of a battery housing with integrated liquid cooling function provided in an embodiment of this utility model; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 Top view; Figure 4 A cross-sectional view of a battery housing with integrated liquid cooling function provided in an embodiment of this utility model;Figure 5 As Figure 4 An enlarged view of A in the middle; Figure 6 A cross-sectional view of the box body in the battery box body with integrated liquid cooling function provided by the embodiment of the utility model; Figure 7 As Figure 6 An enlarged view of B in the middle.

[0042] Reference can be made to Figures 1 to 7 The utility model embodiment provides a kind of battery box body 100 with integrated liquid cooling function, including box body 110, liquid cooling plate 120 and bottom plate 130;Box body 110 has installation port 111, and installation port 111 has a circle of installation groove 112 towards the edge of the outside of box body 110, the shape of installation groove 112 and the shape of liquid cooling plate 120 match, liquid cooling plate 120 and bottom plate 130 are all set in installation groove 112, the first face of liquid cooling plate 120 is welded to the bottom of installation groove 112, bottom plate 130 is welded to the second face of liquid cooling plate 120, and bottom plate 130 and box body 110 are welded together, wherein, first face and second face are the two faces opposite of liquid cooling plate 120.

[0043] Specific welding, between bottom plate 130 and box body 110, between bottom plate 130 and liquid cooling plate 120 can be welded using the way of penetration welding, penetration welding can make weld deep into component interior, realize close and high-strength connection, ensure that in the process of vehicle operation, no matter is facing jolt vibration or long-term stress pulling, the combination place of bottom plate 130 and box body 110, bottom plate 130 and liquid cooling plate 120 can keep thread silk unmoved, lay foundation for the overall structural stability of battery box body 100.Liquid cooling plate 120 and installation groove 112 can use lap welding between them, lap welding is welded by the edge portion of liquid cooling plate 120 overlapping on installation groove 112, can increase welding area, effectively disperses stress, so that liquid cooling plate 120 can be stably settled in installation groove 112, avoid that normal circulation and heat dissipation effect of cooling liquid are influenced due to displacement or slackness.And, the above welding procedure can be completed by one way of friction stir welding, friction stir welding utilizes special stir head to rotate at high speed at welding site, generates friction heat to make material soften and realize perfect fusion under the action of stirring, this process not only is efficient, can greatly shorten production cycle, reduces manufacturing cost, and welding quality is high, weld is uniform, dense, without defects such as pore, crack, ensure the sealing property and structural strength of battery box body 100.

[0044] The battery box body 100 with the integrated liquid cooling function provided in the embodiment of the utility model is characterized in that: the mounting groove 112 matched with the shape of the liquid cooling plate 120 is arranged at the bottom of the box body 110, the top end of the liquid cooling plate 120 is welded to the bottom of the mounting groove 112, and the bottom plate 130 is welded to the bottom of the liquid cooling plate 120, and the bottom plate 130 and the box body 110 are welded together, so that the box body 110, the liquid cooling plate 120 and the bottom plate 130 are integrated together to form a stable whole, and the structure of each component is more compact, and the space occupation is reduced.

[0045] In the above embodiment, the mounting groove 112 can be a stepped groove, the mounting groove 112 comprises a first stepped groove 1121 and a second stepped groove 1122, the liquid cooling plate 120 is arranged in the first stepped groove 1121, and the bottom plate 130 is arranged in the second stepped groove 1122. The mounting groove 112 is designed as a stepped groove structure, on the one hand, the liquid cooling plate 120 and the bottom plate 130 can be respectively installed in the appropriate positions, so that the installation is more accurate and stable, the welding between the cooling plate and the box body 110 and the bottom plate 130 and the box body 110 is facilitated, and space is left for the welding seam, and the welding quality is improved. On the other hand, this design can further make the structure of each component more compact and reduce the space occupation. Moreover, the stepped groove can better fix each component and reduce the possibility of displacement and shaking in the use process, thereby improving the reliability and durability of the whole battery box 100. In addition, the stepped groove design with clear levels can facilitate the positioning and operation of each component, and the maintenance and replacement of components are easier.

[0046] In the above embodiment, the second stepped groove 1122 can surround the periphery of the first stepped groove 1121, and the projection area of the bottom plate 130 along the thickness direction thereof is greater than the projection area of the liquid cooling plate 120 along the thickness direction thereof. In this way, the bottom plate 130 can completely cover the cooling plate, provide effective protection and support for the liquid cooling plate 120, avoid damage from external impact, scratching and the like, and also enhance the stability of the bottom of the whole battery box 100 to some extent and disperse the stress. Secondly, the larger area of the bottom plate 130 cooperates with the second stepped groove 1122 to provide a more sufficient welding area during welding, so that the welding operation is more convenient and firm, the overall structural strength is further strengthened, and the box body 110, the liquid cooling plate 120 and the bottom plate 130 are seamlessly welded together to form a firm whole.

[0047] In the above embodiment, the depth of the second stepped groove 1122 can be greater than the depth of the first stepped groove 1121. The design that the depth of the second stepped groove 1122 is greater than the depth of the first stepped groove 1121 can make the bottom plate 130 form a more reliable protective cover after installation, so that the liquid cooling plate 120 is more fully wrapped in the relatively shallow first stepped groove 1121. In this way, even if there is a larger impact force from below, most of it will be borne by the bottom plate 130 first, and then further buffered by the deeper second stepped groove 1122, greatly reducing the risk of damage to the liquid cooling plate 120. At the same time, during the installation process, due to the obvious depth difference, workers can intuitively distinguish which is the installation position of the liquid cooling plate 120 and which is the installation position of the bottom plate 130, thereby avoiding installation errors and improving the accuracy and efficiency of installation. Moreover, this depth difference also makes the space utilization of the entire battery box 100 more reasonable in the vertical direction, and does not cause space waste due to the two components being at the same depth, further enhancing the compactness of the structure.

[0048] In the above embodiment, the bottom plate 130 can include a plurality of spaced reinforcing ribs 131. Designing reinforcing ribs 131 on the bottom plate 130 can enhance the structural strength of the bottom plate 130, thereby providing more reliable protection for the liquid cooling plate 120. The plurality of spaced reinforcing ribs 131 are like a solid skeleton added to the bottom plate 130, so that the bottom plate 130 can remain stable when subjected to various external forces, such as bumps and vibrations during vehicle travel, collisions during handling, etc., and is not prone to deformation or damage, thereby providing more reliable support for the liquid cooling plate 120 and the battery assembly. Secondly, the reinforcing ribs 131 also help to optimize heat dissipation. Specifically, the reinforcing ribs 131 can form certain air flow channels on the bottom plate 130, which can promote heat dissipation. At the same time, the reinforcing ribs 131 themselves can also conduct a portion of the heat, accelerating the heat dissipation speed and prolonging the service life of the battery. In addition, when welding the bottom plate 130, the reinforcing ribs 131 can also serve as a positioning reference, making it easier and more accurate for workers to install the bottom plate 130 to the appropriate position, improving the efficiency and accuracy of assembly.

[0049] In the above embodiment, the liquid cooling plate 120 has a flow channel for the flow of cooling liquid, and the reinforcing ribs 131 and the flow channel can be arranged in an interlaced manner. The interlaced arrangement of the reinforcing ribs 131 and the flow channel can further disperse the impact force, making the entire battery box 100 more solid and reliable when facing various impacts and vibrations, making the structure of the liquid cooling plate 120 more stable, improving the overall structural strength of the box, and the reinforcing ribs 131 providing additional support to the liquid cooling plate 120. In the case of external forces or the weight of the battery, the liquid cooling plate 120 is less likely to deform during operation, and the heat dissipation function of the liquid cooling plate 120 can be better played.

[0050] In the above embodiment, the thickness of the edge of the base plate 130 can be less than the depth of the second stepped groove 1122. The deeper second stepped groove 1122 provides more space for welding, allowing for better filling of the weld seam during the welding process, resulting in a more complete weld. This not only enhances the strength of the weld and improves the structural stability of the entire battery box 100, but also effectively disperses external impacts, reducing the risk of cracking due to insufficient welding. Simultaneously, this design also facilitates welding operations, enabling welders to perform welding more precisely, improving welding quality and efficiency.

[0051] In the above embodiments, a gap can be provided between the edge of the base plate 130 and the side of the second stepped groove 1122. By designing this gap, the solder can fully fill it during welding, making the weld more robust and reliable. This design enhances the overall structural strength of the battery box 100 and improves its stability in various operating environments. When the vehicle travels on rough roads or encounters external impacts, the robustly welded battery box can better protect the internal battery and other components, ensuring normal battery operation and vehicle safety. Simultaneously, the thorough welding also helps improve the sealing of the battery box 100, preventing external dust, moisture, and other impurities from entering the box and affecting battery performance and lifespan. Furthermore, this gap between the base plate 130 and the second stepped groove 1122 facilitates the installation of the base plate 130 into the second stepped groove 1122, reducing potential collisions and friction during installation, lowering the risk of damage to the base plate 130 and the mounting groove 112, and allowing for more flexible adjustment of the base plate 130's position during installation, making the installation more precise and efficient.

[0052] Furthermore, this utility model embodiment also provides a battery pack, including the battery housing 100 with integrated liquid cooling function as described in the above embodiment. The battery housing 100 with integrated liquid cooling function has a mounting groove 112 adapted to the shape of the liquid cooling plate 120 at the bottom of the housing body 110. The top of the liquid cooling plate 120 is welded to the bottom of the mounting groove 112, and a bottom plate 130 is welded to the bottom of the liquid cooling plate 120. At the same time, the bottom plate 130 and the housing body 110 are welded together, so that the housing body 110, the liquid cooling plate 120 and the bottom plate 130 are integrated together to form a stable whole, making the battery pack structure more compact, reducing space occupation and improving the energy density of the battery pack.

[0053] In addition, the utility model embodiment still provides a kind of vehicle, including the battery pack in above-mentioned embodiment, the battery pack is by being arranged with the mounting groove 112 of liquid cooling plate 120 appearance adaptation in box bottom, liquid cooling plate 120 top end is welded in the bottom of mounting groove 112, and bottom plate 130 is welded in the bottom of liquid cooling plate 120, simultaneously, bottom plate 130 and box body 110 are welded together, make box body 110, liquid cooling plate 120 and bottom plate 130 integrate together, form a stable whole, make battery pack structure more compact, improve the energy density of battery pack, to improve the endurance of vehicle.

[0054] Finally, it needs to be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A battery housing with integrated liquid cooling function, characterized in that, Includes the main body of the enclosure, the liquid cooling plate, and the base plate; The housing body has a mounting opening, and the mounting opening has a mounting groove around its outer edge facing the housing body. The shape of the mounting groove matches the shape of the liquid cooling plate. The liquid cooling plate and the bottom plate are both disposed in the mounting groove. The first side of the liquid cooling plate is welded to the bottom of the mounting groove, and the bottom plate is welded to the second side of the liquid cooling plate. The bottom plate and the housing body are welded together. The first side and the second side are two opposite sides of the liquid cooling plate.

2. The battery housing with integrated liquid cooling function according to claim 1, characterized in that, The mounting groove is a stepped groove, which includes a first stepped groove and a second stepped groove. The liquid cooling plate is disposed in the first stepped groove, and the base plate is disposed in the second stepped groove.

3. The battery housing with integrated liquid cooling function according to claim 2, characterized in that, The second step groove surrounds the first step groove, and the projected area of ​​the base plate along its own thickness direction is greater than the projected area of ​​the liquid cooling plate along its own thickness direction.

4. The battery housing with integrated liquid cooling function according to claim 3, characterized in that, The depth of the second step groove is greater than the depth of the first step groove.

5. The battery housing with integrated liquid cooling function according to claim 4, characterized in that, The base plate includes multiple reinforcing ribs spaced apart.

6. The battery housing with integrated liquid cooling function according to claim 5, characterized in that, The liquid cooling plate has channels for the flow of coolant, and the reinforcing ribs and the channels are arranged in an alternating pattern.

7. The battery housing with integrated liquid cooling function according to claim 6, characterized in that, The thickness of the edge of the base plate is less than the depth of the second step groove.

8. The battery housing with integrated liquid cooling function according to claim 7, characterized in that, There is a gap between the edge of the base plate and the side of the second step groove.

9. A battery pack, characterized in that, The battery housing includes the integrated liquid cooling function as described in any one of claims 1-8.

10. A vehicle, characterized in that, Includes the battery pack described in claim 9.

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