Cooling and supporting integrated assembly, battery box and battery pack

Abstract

The utility model relates to the technical field of batteries, and particularly discloses a cooling and supporting integrated assembly, a battery box and a battery pack, the cooling and supporting integrated assembly comprises a cooling piece and a supporting piece which are fixedly connected, the cooling piece comprises a base body and a flow channel structure arranged on the base body, and the outer wall of the flow channel structure protrudes out of the surface of the base body. The surface of the supporting piece is tightly attached to the outer wall of the flow channel structure, and the surface of the supporting piece is tightly attached to the surface of the cooling piece, so that the whole flow channel surface at the bottom of the cooling piece can be covered, the anti-corrosion effect on the cooling piece is achieved, the spraying use of an anti-corrosion coating is reduced, the overall weight of the battery pack is reduced, and the manufacturing cost is reduced. The surface of the supporting piece can be tightly matched with the surface of the bottom protection plate, and zero-pasting assembly is conveniently formed for force transmission and coupling stress. The supporting piece and the cooling piece are fixedly connected and integrated into an integral part, so that the step-by-step assembly process is reduced, the production process is remarkably simplified, and the production efficiency and the production takt are improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a cooling support integrated component, a battery box, and a battery pack. Background Technology

[0002] In electric and hybrid vehicles, the battery pack, as a core component of the powertrain, is of paramount importance in terms of safety and reliability. Especially in terms of bottom-impact protection, the battery pack needs sufficient strength to withstand impacts from below.

[0003] In related technologies, the bottom protection of a battery pack is typically achieved through a bottom guard plate and a support pad. The support pad buffers and absorbs impact energy, while the bottom guard plate enhances the overall structural rigidity. Furthermore, as a key component of the battery pack's thermal management system, the bottom flow channel surface of the cold plate is constantly exposed to the harsh environment under the vehicle, facing the risk of corrosion. Therefore, an anti-corrosion coating is usually applied to the bottom of the cold plate to improve its durability.

[0004] However, the bottom liner, support pad, and cold plate are independent components that need to be manufactured and assembled separately. This not only increases the complexity of the production process but also affects the production cycle and reduces overall production efficiency. Furthermore, the flow channel surface of the cold plate forms multiple protrusions, resulting in a complex structure. The support pad, being a flat plate, can only connect to the top of the protrusions on the flow channel surface, leaving a significant clearance between the support pad and the cold plate. The support pad undergoes elastic deformation, and there are substantial manufacturing tolerances between the support pad and the bottom liner. Under impact, the efficiency of force transmission and absorption is low, limiting the protective effect. Moreover, the large number of components such as the support pad, anti-corrosion coating, and cold plate increases the overall weight of the battery pack, raising manufacturing costs. Utility Model Content

[0005] The purpose of this utility model is to provide a cooling support integrated component, battery box and battery pack to solve the problems in the related technology where the flow channel surface of the cold plate and the support pad have a large fit gap, which makes it difficult to assemble the support pad and the bottom guard plate with zero contact, limiting the force transmission and coupling force, and making the installation process complicated.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, the present invention provides a cooling support integrated assembly, which includes:

[0008] A cooling component includes a base and a flow channel structure disposed on the base, wherein the outer wall of the flow channel structure protrudes outward from the surface of the base;

[0009] A support member is fixedly connected to the cooling member, the support member is tightly fitted to the outer wall of the flow channel structure, and the support member is tightly fitted to the substrate.

[0010] In one embodiment, the support member is thermally fused to the cooling member.

[0011] In one embodiment, the support is an integrally formed thermoplastic plate, which can be thermally fused to the outer wall of the flow channel structure and the surface of the substrate.

[0012] In one embodiment, the support includes a support layer and a hot-melt layer, the hot-melt layer being disposed on the surface of the support layer, and the hot-melt layer being thermally fused to the outer wall of the flow channel structure and the surface of the substrate.

[0013] In one embodiment, the support layer is provided with a groove, the groove wall is provided with the hot-melt layer, and the groove wall is hot-melt connected to the outer wall of the flow channel structure.

[0014] Secondly, the present invention provides a battery box, the battery box including a box body, a bottom protective plate and a cooling support integrated assembly as described in any of the above embodiments, the bottom protective plate being fixedly disposed on the box body, and the cooling support integrated assembly being disposed between the box body and the bottom protective plate.

[0015] In one embodiment, the enclosure includes a connected enclosure body and a frame, the circumferential edge of the cooling support integrated assembly is fixedly connected to the enclosure body, and / or the middle portion of the cooling support integrated assembly is fixedly connected to the frame.

[0016] In one embodiment, the circumferential edge of the cooling support integration assembly is welded to the housing body, and / or the middle portion of the cooling support integration assembly is riveted to the frame.

[0017] In one embodiment, the support member is provided with a countersunk hole, and a rivet nut is provided at the countersunk hole. The tail of the rivet nut passes through the countersunk hole and the cooling member and can be riveted to the frame. The head of the rivet nut is located in the countersunk hole.

[0018] Thirdly, this utility model provides a battery pack, including a cell module and a battery box as described in any of the above-mentioned solutions, wherein the cell module is placed inside the battery box.

[0019] The beneficial effects of this utility model are as follows:

[0020] This invention provides a cooling support integrated assembly, a battery box, and a battery pack. The cooling support integrated assembly is fixedly connected to a cooling component via a support member. The surface of the support member is tightly fitted to the outer wall of the flow channel structure and to the surface of the substrate, providing complete coverage of the flow channel surface at the bottom of the cooling component. This achieves corrosion protection, reduces the need for anti-corrosion coatings, lightens the overall weight of the battery pack, and lowers manufacturing costs. The tight fit between the support member and the cooling component allows the cooling component to limit the support member's movement, reducing significant deformation under stress. When the cooling support integrated assembly needs to be assembled with a bottom cover plate, the cooling component presses the support member onto the surface of the bottom cover plate, ensuring a tight fit between the surfaces of the support member and the bottom cover plate. This facilitates zero-contact assembly for force transmission and coupling. The fixed connection and tight fit between the support member and the cooling component into a single integrated component reduces multi-step assembly processes, significantly simplifies the production process, and improves production efficiency and cycle time. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the cooling support integrated assembly in an embodiment of this utility model;

[0022] Figure 2 This is an exploded view of the cooling support integrated assembly in an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram showing the installation position of the cooling support integrated assembly within the housing in an embodiment of this utility model;

[0024] Figure 4 for Figure 3 A schematic diagram of the first structural design of the mid-section AA;

[0025] Figure 5 for Figure 3 A schematic diagram of the second structure of the mid-section AA;

[0026] Figure 6 This is a schematic diagram showing the connection relationship between the box body and the bottom protective plate in an embodiment of this utility model;

[0027] Figure 7 This is an exploded view of the battery box in an embodiment of this utility model;

[0028] Figure 8 for Figure 3 Schematic diagram of the mid-section BB.

[0029] In the picture:

[0030] 100. Cooling support integrated assembly;

[0031] 110. Cooling component; 111. Flow channel structure; 112. Matrix;

[0032] 120. Support component; 121. Support layer; 122. Hot melt layer; 123. Countersunk hole;

[0033] 130. Rivet nuts;

[0034] 200. Box body; 210. Box main body; 220. Frame;

[0035] 300. Bottom guard plate. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] like Figures 1 to 3As shown, an embodiment of the first aspect of this utility model provides a cooling support integrated assembly 100, which includes a cooling element 110 and a support element 120. The cooling element 110 includes a base 112 and a flow channel structure 111 disposed on the base 112, the outer wall of the flow channel structure 111 protruding from the surface of the base 112. The support element 120 is fixedly connected to the cooling element 110, the surface of the support element 120 is in close contact with the outer wall of the flow channel structure 111, and the surface of the support element 120 is in close contact with the surface of the base 112.

[0041] The flow channel structure 111 is set on the base 112. The base 112 can support the flow channel structure 111 and reduce the bending deformation of the flow channel structure 111. The base 112 can be a plate structure, and the flow channel structure 111 can be a pipe laid on the base 112, or the flow channel structure 111 can be a curved panel with equal wall thickness. The curved panel is fixedly set on the base 112, and the curved panel and the base 112 form a channel for the flow of cooling medium.

[0042] The outer wall of the flow channel structure 111 protrudes from the surface of the base 112 because the flow channel structure 111 needs to provide sufficient flow area for the cooling medium. The radial dimension of the flow channel structure 111 will be significantly larger than the thickness of the base 112. Therefore, the outer wall of the flow channel structure 111 will protrude from the surface of the base 112 to ensure that the cooling medium obtains sufficient flow area.

[0043] The support member 120 is fixedly connected to the cooling member 110. The surface of the support member 120 is in close contact with the outer wall of the flow channel structure 111. The close contact between the surface of the support member 120 and the surface of the base 112 means that the support member 120 and the cooling member 110 are connected by a surface. The surface of the support member 120 and the surface of the cooling member 110 have the same contour shape and are in close contact with each other.

[0044] With this configuration, a flow channel structure 111 is provided on the substrate 112, which is used for the flow of cooling medium to ensure cooling performance. The support member 120 is fixedly connected to the cooling member 110, and the surface of the support member 120 is in close contact with the outer wall of the flow channel structure 111 and the surface of the support member 120 is in close contact with the surface of the substrate 112. This reduces the fitting gap and can completely cover the flow channel surface at the bottom of the cooling member 110, thereby achieving a corrosion protection effect on the cooling member 110, reducing the need for anti-corrosion coating, reducing the overall weight of the battery pack, and lowering manufacturing costs. The support component 120 and the cooling component 110 are tightly fitted together. The cooling component 110 can limit the support component 120, reducing the large deformation of the support component 120 under stress. When the cooling support integrated assembly 100 needs to be assembled with the bottom guard plate 300, the cooling component 110 can press the support component 120 onto the surface of the bottom guard plate 300. The surface of the support component 120 and the surface of the bottom guard plate 300 can fit tightly together, facilitating zero-contact assembly for force transmission and coupling. The support component 120 and the cooling component 110 are fixedly connected and integrated into a single component, reducing the number of step-by-step assembly processes, significantly simplifying the production process, improving production efficiency and cycle time, and solving the problem in related technologies where the flow channel surface of the cold plate and the support pad have a large fit clearance, making it difficult to achieve zero-contact assembly between the support component and the bottom guard plate, limiting force transmission and coupling, and complicating the installation process.

[0045] Optionally, the support member 120 and the cooling member 110 are connected by heat fusion so that the surfaces of the support member 120 and the cooling member 110 can fit tightly and conform to the shape, with high fit and strong connection, and simple installation and operation.

[0046] Optionally, the support member 120 and the cooling member 110 can be bonded together with an adhesive, that is, at least one of the support member 120 and the cooling member 110 has an adhesive layer such as foam or pressure-sensitive adhesive on its surface. The adhesive layer has a certain thickness and is in a gel state before curing. After the support member 120 and the cooling member 110 are bonded together, they are pressed together and fixed so that the surface of the support member 120 is tightly attached to the outer wall of the flow channel structure 111 and the surface of the support member 120 is tightly attached to the surface of the substrate 112 through the adhesive layer.

[0047] Among these methods, hot-melt bonding and adhesive bonding are suitable for complex flow channel structures 111. For simpler flow channel structures 111, the support member 120 can be provided with a recessed portion that has the same shape and contour as the flow channel structure 111. The surface of the recessed portion can be welded to the outer wall of the flow channel structure using hot gas. The fixing connection method between the support member 120 and the cooling member 110 can be selected according to the application requirements, ensuring that the surface of the support member 120 is in close contact with the outer wall of the flow channel structure 111 and the surface of the support member 120 is in close contact with the surface of the substrate 112.

[0048] In some embodiments, the support member 120 and the cooling member 110 are thermally fused together, that is, at least one of the support member 120 and the cooling member 110 can be heated and melted. The surface of the support member 120 is thermally fused to the outer wall of the flow channel structure 111, and the surface of the support member 120 is thermally fused to the surface of the substrate 112. This allows the surface of the support member 120 to fit tightly and conformally to the outer wall of the flow channel structure 111 and the surface of the support member 120 to the surface of the substrate 112, thereby achieving overall coverage of the flow channel surface at the bottom of the cooling member 110 and thus providing corrosion protection for the cooling member 110.

[0049] Moreover, compared to adhesive bonding, in this embodiment, the surface of the support member 120 is bonded to the outer wall of the flow channel structure 111, and the surface of the support member 120 is bonded to the surface of the substrate 112 using a heat-fusion connection. This achieves an interlocking, snap-fit ​​connection, reducing the mating gap and effectively improving the connection strength at the connection point. It not only effectively protects the bottom of the support member 120 from impacts but also provides multi-directional force protection for the cooling member 110 under vibration or impact conditions, reducing the stress on the cooling member 110 and the battery cell module above it, thus improving the safety of the battery pack. The tight heat-fusion bonding between the support member 120 and the cooling member 110 better adapts to the complex flow channel structure 111, with a high degree of fit, facilitating force transmission and coupling. The heat-fusion connection of the support member 120 and the cooling member 110 integrates them into a single component, simplifying operation.

[0050] Optionally, either the cooling component 110 or the support component 120 may be configured as a heat-fusible structure, or both the cooling component 110 and the support component 120 may be heat-fusible structures, as long as they can be heat-fused together. In this embodiment, the support component 120 adopts a heat-fusible structure.

[0051] like Figures 2 to 4 As shown, Figure 4 for Figure 3 The first structural diagram of the mid-section AA, that is, the structural diagram of the support component being a one-piece molded structure.

[0052] In some embodiments, the support member 120 is an integrally molded thermoplastic plate. The support member 120 can be thermally fused to the outer wall of the flow channel structure 111 and the surface of the substrate 112 to form a groove-shaped structure that fits tightly against the outer wall of the flow channel structure 111. This facilitates the connection operation. The support member 120 adopts an integral molding design, and the entire support member 120 can be thermally deformed and thermally fused to the cooling member 110, ensuring full contact with the flow channel surface of the cooling member 110. After curing, the support member 120, through its groove-shaped structure, forms a mechanical locking effect with the flow channel surface of the cooling member 110, improving the mechanical strength and stability of the connection and enhancing protection under vibration, impact, and other conditions. The support member 120 can be molded as a single unit during manufacturing, eliminating the need for additional bonding or fixing steps, thus enhancing integration, simplifying the production process, improving production efficiency, and reducing production costs.

[0053] Optionally, the support member 120 can be hot-pressed with the outer wall of the flow channel structure 111 and the surface of the base 112. By applying pressure to the hot-melt position, the support member 120 can be more tightly bonded to the outer wall of the flow channel structure 111 and the surface of the base 112, and the support member 120 as a whole can have more sufficient contact with the flow channel surface of the cooling member 110.

[0054] like Figure 3 and Figure 5 As shown, Figure 5 for Figure 3 The second structural diagram of the mid-section AA, that is, the structural diagram of the support member being a split structure.

[0055] In some embodiments, the support member 120 includes a support layer 121 and a hot-melt layer 122. The hot-melt layer 122 is disposed on the surface of the support layer 121. The hot-melt layer 122 can be hot-melted to the outer wall of the flow channel structure 111 and the surface of the substrate 112. That is, the support layer 121 can mainly play the role of buffering force and absorbing impact energy. The hot-melt layer 122 mainly serves as the substrate 112 for hot-melting connection with the cooling member 110. The support member 120 is designed in layers, which can take into account both buffering force and hot-melt effect.

[0056] Optionally, the hot-melt layer 122 can be made of thermoplastic elastomer, that is, a thermoplastic elastomer is disposed on the surface of the support layer 121 as the hot-melt layer 122. A thermoplastic elastomer is a material with rubber elasticity and thermoplastic processing properties; it softens when heated and recovers its original hardness and elasticity upon cooling. During manufacturing, the thermoplastic elastomer hot-melt layer 122 is heated to its softening temperature and then pressed onto the outer wall of the flow channel structure 111 and the surface of the substrate 112. Under pressure, the thermoplastic elastomer hot-melt layer 122 forms a tight hot-melt connection with the cooling element 110. After cooling, the thermoplastic elastomer hot-melt layer 122 recovers its original hardness, forming a robust connection interface, enhancing the coupling effect between the support layer 121 and the cooling element 110. Simultaneously, the elastic properties of the thermoplastic elastomer hot-melt layer 122 can effectively absorb the stress of the battery pack under vibration or impact conditions.

[0057] Alternatively, the hot-melt layer 122 can also be made of high-performance engineering plastics, such as polyetheretherketone (PEEK). PEEK is a high-performance thermoplastic with excellent heat resistance, mechanical strength, and chemical stability. During production, the PEEK hot-melt layer 122 can be heated to a softened state and then bonded to the outer wall of the flow channel structure 111 and the surface of the substrate 112 through a hot-pressing operation. After cooling, the PEEK hot-melt layer 122 forms a bonding layer with good structural strength and corrosion resistance, providing overall protection to the outer wall of the flow channel structure 111 and the surface of the substrate 112.

[0058] like Figure 5As shown, in some embodiments, the support layer 121 is provided with grooves, and the groove walls are provided with a heat-fused layer 122. The groove walls are heat-fused to the outer wall of the flow channel structure 111. With this configuration, grooves can be pre-set on the support layer 121, and the heat-fused layer 122 can be heat-fused into a fluid state, flowing and filling the grooves on the support layer 121 and between the surface of the support layer 121 and the surface of the substrate 112. The fluid state of the heat-fused layer 122 can be more evenly distributed on the contact interface, facilitating the formation of a seamless connection. It can better adapt to the minor irregularities of the outer wall of the flow channel structure 111 and the surface of the cooling component 110, achieving a tighter fit. The groove configuration and the filling method of the heat-fused layer 122 mean that the connection between the support layer 121 and the cooling component 110 not only relies on surface pressing but also forms a mechanical locking effect through the curing of the heat-fused layer 122 in the groove. This improves the mechanical strength and stability of the connection, enhances the protection effect under vibration, impact, and other conditions, and better ensures the safety of the battery pack. Furthermore, the hot melt layer 122 fills the space between the groove wall of the support layer 121 and the outer wall of the flow channel structure 111, as well as between the surface of the support layer 121 and the surface of the cooling component 110, which facilitates the formation of a gapless protective layer. Due to the fluidity and filling properties of the hot melt layer 122, it can more effectively cover and protect the outer wall of the flow channel structure 111, further improving the corrosion resistance.

[0059] Optionally, the support layer 121 in this embodiment can be a thermoplastic material, or it can be other non-thermoplastic materials, such as silicone rubber or polyurethane, which can improve the elastic cushioning performance of the support layer 121 and expand the range of material options. The groove in this embodiment can be designed to have the same shape and contour as the outer wall of the flow channel structure 111, or it can be different, as long as it can be filled and cured by the hot melt layer 122 to prevent corrosion of the flow channel structure and form a mechanical locking connection.

[0060] like Figures 4 to 5 As shown, in some embodiments, the junction between the outer wall of the flow channel structure 111 and the substrate 112 is a smooth curved surface transition, which makes it easier for the hot melt layer 122 in the hot melt state to fit tightly with the junction between the outer wall of the flow channel structure 111 and the substrate 112, reducing the connection gap. Moreover, the smooth curved surface can increase the contact area, making the connection between the flow channel structure 111 and the substrate 112 more robust. When subjected to external impact or vibration, it can better disperse and absorb the force, reduce stress concentration, and thus improve the structural stability and impact resistance of the entire battery pack.

[0061] Optionally, the outer wall of the flow channel structure 111 can also be designed as a smooth curved surface to reduce corners and further improve the bonding effect between the hot melt layer 122 and the outer wall of the flow channel structure 111 and the substrate 112.

[0062] like Figures 6 to 8As shown, an embodiment of the second aspect of this utility model provides a battery box, including a box body 200, a bottom protective plate 300, and a cooling support integrated assembly 100 as described in any of the above embodiments. The bottom protective plate 300 is fixedly disposed on the box body 200, and the cooling support integrated assembly 100 is disposed between the box body 200 and the bottom protective plate 300.

[0063] This design ensures efficient cooling for the battery box via the cooling component 110. The fixed and tight fit between the support component 120 and the cooling component 110 not only guarantees a close fit but also provides complete coverage of the bottom flow channel surface of the cooling component 110, enhancing the structural strength and impact protection of the battery box bottom. Under complex road conditions, it effectively absorbs and disperses impact forces, protecting the battery cell modules from direct damage. Furthermore, the complete coverage of the support component 120 by the outer wall of the flow channel structure 111 and the surface of the substrate 112 reduces the need for an anti-corrosion coating. This not only reduces the weight of the battery box and lowers production costs but also avoids the environmental problems and potential corrosion failure risks associated with anti-corrosion coatings, improving the long-term durability and reliability of the battery box in harsh environments. Furthermore, the fixed and tight connection between the support component 120 and the cooling component 110 enhances the connection strength at the joint, ensuring the battery box remains stable even under vibration or impact, reducing stress on the internal cell modules and significantly improving battery box safety. The integrated cooling support assembly 100 integrates the cooling component 110 and the support component 120 into a single unit, reducing assembly steps, simplifying the production process, significantly improving production efficiency and cycle time, and lowering the production cost of the battery box.

[0064] This embodiment incorporates the cooling support integrated assembly 100 into the battery box design, which not only improves the battery box's thermal management, structural strength, and corrosion resistance, but also simplifies the production process, reduces costs, and enhances assembly accuracy and overall safety, significantly optimizing the overall performance of the battery system. This embodiment facilitates a tight fit and fixation of the cooling support integrated assembly 100 to the bottom guard plate 300, achieving an efficient force transmission path from the bottom guard plate 300 to the cooling support integrated assembly 100, thus facilitating efficient force transmission and coupling. When the vehicle encounters vibration or impact, it facilitates the even distribution and effective absorption of force, improving the stress protection of internal battery box components and preventing damage caused by excessive localized stress.

[0065] Since the cooling support integrated assembly 100 described above is included, the battery box of this utility model embodiment has all the advantages and beneficial effects of the above embodiments, which will not be repeated here.

[0066] Optionally, the circumferential edge of the bottom guard plate 300 can be connected to the housing 200 by fasteners such as bolts or pins. The bottom guard plate 300 can clamp and fix the cooling support integrated assembly 100 to the bottom of the housing 200, so that the surface of the bottom guard plate 300 can fit tightly against the surface of the cooling support integrated assembly 100.

[0067] Optionally, the bottom cover plate 300 may be equipped with fasteners such as bolts or pins. These fasteners penetrate the bottom cover plate 300 and the support member 120 and cooling member 110 of the cooling support integrated assembly 100 before connecting to the housing 200. The fasteners can be positioned circumferentially or centrally on the bottom cover plate 300. This ensures a tight fit between the surface of the bottom cover plate 300 and the surface of the cooling support integrated assembly 100, further guaranteeing precise alignment and secure fixing between the cooling support integrated assembly 100 and the housing 200. This reduces assembly errors, improves assembly efficiency, simplifies the battery box production process, and lowers manufacturing costs. During maintenance or replacement of battery components, the bottom cover plate 300 and the cooling support integrated assembly 100 can be easily separated by removing the fasteners, facilitating inspection, maintenance, or replacement of the internal cell modules and improving maintenance convenience and maintainability of the battery system.

[0068] like Figures 6 to 8 As shown, Figure 8 for Figure 3 The cross-sectional schematic diagram of section BB shows the connection relationship between the cooling support integrated assembly and the frame of the housing. In some embodiments, the housing 200 includes a housing body 210 and a frame 220 connected together. The circumferential edge of the cooling support integrated assembly 100 is fixedly connected to the housing body 210, and / or the middle part of the cooling support integrated assembly 100 is fixedly connected to the frame 220. This enables a stable connection between the cooling support integrated assembly 100 and the housing 200, reduces movement of the circumferential edge or middle surface of the cooling support integrated assembly 100, facilitates close fitting and assembly of the surface of the cooling support integrated assembly 100 with the surface of the bottom protective plate 300, and facilitates force transmission and coupling.

[0069] The circumferential edge of the cooling support integrated assembly 100 is fixedly connected to the housing body 210, which ensures a tight fixation between the housing body 210 and the cooling support integrated assembly 100. This reduces displacement caused by vibration or impact during vehicle operation, enhances the stability between the cooling support integrated assembly 100 and the housing body 200, and improves the overall stability of the battery box structure. The middle part of the cooling support integrated assembly 100 is fixedly connected to the frame 220, which reduces the gap between the surface of the cooling component 110 and the cell module, reduces thermal resistance, and allows the cooling component 110 to more directly transfer the heat generated by the cell module to the cooling system. This facilitates efficient heat conduction, keeps the battery within a suitable operating temperature range, and thus improves the thermal management efficiency of the battery system.

[0070] Optionally, the circumferential edge of the cooling support integrated assembly 100 is welded to the housing body 210. The connection position has high structural strength and can form a seal at the connection position, improving the protection performance of the battery cell module, ensuring precise alignment and firm fixation between the cooling support integrated assembly 100 and the housing body 210, reducing errors in the assembly process, and improving assembly efficiency.

[0071] Optionally, the middle part of the cooling support integrated assembly 100 is riveted to the frame 220. The frame 220 has good structural strength, and the riveting connection is more stable, significantly improving the connection strength between the cooling support integrated assembly 100 and the housing 200. It can withstand vibration and impact, and even under harsh road conditions, the frame 220 and the cooling support integrated assembly 100 remain stably connected, reducing displacement or damage caused by weak connections. Compared with welding, riveting is faster in the assembly process, reducing heat treatment and cooling time, and lowering the need for precise temperature control. The direct connection between the cooling support integrated assembly 100 and the frame 220 facilitates the reduction of assembly problems between the cooling support integrated assembly 100 and the frame 220 caused by process tolerances. As a flexible assembly method, riveting can adapt to a certain range of dimensional changes, facilitating the coupling of forces between the cooling support integrated assembly 100 and the frame 220, and promoting uniform force distribution and effective absorption.

[0072] In some embodiments, the support member 120 is provided with a countersunk hole 123, and a rivet nut 130 is provided at the countersunk hole 123. The tail of the rivet nut 130 passes through the countersunk hole 123 and the cooling member 110 and can be riveted to the frame 220 to rivet the cooling support integrated assembly 100 onto the frame 220. The head of the rivet nut 130 is located in the countersunk hole 123. The countersunk hole 123 can provide a space for the head of the rivet nut 130, reducing the positional interference between the rivet nut 130 and the bottom guard plate 300, so that the surface of the bottom guard plate 300 fits more closely with the surface of the support member 120.

[0073] Optionally, the rivet nut 130 may be provided with threaded holes, which not only facilitates the user's installation of the rivet nut 130, but also allows the bottom guard plate 300 to be threadedly connected to the threaded holes on the rivet nut 130 by fasteners such as bolts or screws, so as to fix the bottom guard plate 300 to the frame 220. The connection points between the bottom guard plate 300 and the frame 220 and between the cooling support integrated assembly 100 and the frame 220 can be shared, reducing the number of connection points on the frame 220 and the cooling support integrated assembly 100, and ensuring the structural strength of the housing 200 and the cooling support integrated assembly 100.

[0074] A third aspect of this utility model provides a battery pack, including a cell module and a battery box as described in any of the above embodiments. The cell module is placed inside the battery box, which can cool and effectively protect the cell module.

[0075] Among them, a cell module refers to a combination of one or more individual batteries in series, parallel or series-parallel configuration, with only one pair of positive and negative output terminals, used as a power source.

[0076] Since it includes the battery box described above, the battery pack of this utility model embodiment has all the advantages and beneficial effects of the above embodiments, which will not be repeated here.

[0077] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cooling support integrated assembly, characterized in that, include: The cooling component (110) includes a base (112) and a flow channel structure (111) disposed on the base (112), wherein the outer wall of the flow channel structure (111) protrudes outward from the surface of the base (112); The support member (120) is fixedly connected to the cooling member (110), the support member (120) is tightly fitted to the outer wall of the flow channel structure (111), and the support member (120) is tightly fitted to the base (112).

2. The cooling support integrated assembly according to claim 1, characterized in that, The support member (120) and the cooling member (110) are thermally fused together.

3. The integrated cooling support assembly according to claim 1 or 2, characterized in that, The support member (120) is an integrally formed thermoplastic plate, and the support member (120) can be thermally fused to the outer wall of the flow channel structure (111) and the surface of the substrate (112).

4. The cooling support integrated assembly according to claim 1 or 2, characterized in that, The support member (120) includes a support layer (121) and a hot melt layer (122). The hot melt layer (122) is disposed on the surface of the support layer (121) and can be hot melt connected to the outer wall of the flow channel structure (111) and the surface of the substrate (112).

5. The cooling support integrated assembly according to claim 4, characterized in that, The support layer (121) is provided with a groove, and the groove wall is provided with the hot melt layer (122). The groove wall is hot melt connected to the outer wall of the flow channel structure (111).

6. A battery box, characterized in that, The battery box includes a box body (200), a bottom protective plate (300), and a cooling support integrated assembly as described in any one of claims 1-5. The bottom protective plate (300) is fixedly disposed on the box body (200), and the cooling support integrated assembly is disposed between the box body (200) and the bottom protective plate (300).

7. The battery box according to claim 6, characterized in that, The enclosure (200) includes a box body (210) and a frame (220) connected to each other. The circumferential edge of the cooling support integrated assembly is fixedly connected to the box body (210), and / or the middle part of the cooling support integrated assembly is fixedly connected to the frame (220).

8. The battery box according to claim 7, characterized in that, The circumferential edge of the cooling support integrated assembly is welded to the box body (210), and / or the middle part of the cooling support integrated assembly is riveted to the frame (220).

9. The battery box according to claim 7 or 8, characterized in that, The support member (120) is provided with a countersunk hole (123), and a rivet nut (130) is provided at the countersunk hole (123). The tail of the rivet nut (130) passes through the countersunk hole (123) and the cooling member (110) and can be riveted to the frame (220). The head of the rivet nut (130) is located in the countersunk hole (123).

10. A battery pack, comprising a cell module, characterized in that, It also includes a battery box according to any one of claims 6-9, wherein the cell module is placed inside the battery box.

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