Integrated structure, battery pack and electric equipment

Abstract

The utility model relates to the technical field of batteries, and provides an integrated structure, a battery pack and electric equipment.The integrated structure comprises a cold plate, a battery assembly and a reinforcing assembly, the battery assembly comprises a plurality of battery cell units, the battery assembly is connected to one side of the cold plate, and the periphery of the battery assembly and the cold plate form a reserved mounting area; and the reinforcing assembly is arranged in the reserved mounting area, and the reinforcing assembly is connected to the cold plate. According to the embodiment of the invention, the energy density of the battery pack can be improved, the assembly process of the battery pack is simplified, and the assembly precision requirement is reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to an integrated structure, battery pack, and electrical device. Background Technology

[0002] Battery packs based on the CTP (Cell to Pack) architecture improve space utilization and energy density, enabling them to meet the range requirements of new energy vehicles.

[0003] The aforementioned battery packs are typically equipped with heat dissipation structures such as liquid cooling plates to achieve heat dissipation. The cooling plates and individual cell units need to be installed in stages within the battery pack housing, making the assembly process complex and requiring high assembly precision. The cooling plates and individual cell units occupy a significant amount of space, which affects the energy density of the battery pack. Utility Model Content

[0004] This application provides an integrated structure, battery pack, and electrical device that can improve the energy density of the battery pack, simplify the battery pack assembly process, and reduce the requirements for assembly accuracy.

[0005] The first aspect of this application provides an integrated structure, including:

[0006] Cold plate;

[0007] A battery assembly includes multiple battery cell units, the battery assembly is connected to one side of the cold plate, and the outer periphery of the battery assembly and the cold plate form a reserved installation area;

[0008] And a reinforcing component, which is disposed in the reserved installation area and connected to the cold plate.

[0009] According to the integrated structure described in the first aspect of this application, the integrated structure can realize the combination of the cold plate and the battery module, making the cold plate and the battery module more compact in structure, which can improve the energy density of the battery pack. At the same time, based on this integrated design, the assembly process of the battery pack can be simplified and the assembly accuracy requirements can be reduced.

[0010] In one possible implementation, the reinforcing component includes an outer frame and an internal reinforcing beam disposed within the outer frame.

[0011] In one possible implementation, the internal reinforcing beams include crossbeams and longitudinal beams, which are staggered within the outer frame.

[0012] In one possible implementation, the reinforcing component includes a first reinforcing member and a second reinforcing member, which are disposed opposite to each other on opposite sides of the battery assembly along a first direction.

[0013] In one possible implementation, the integrated structure further includes a limiting component disposed on the cold plate and connected between the first reinforcing member and the second reinforcing member.

[0014] In one possible implementation, the limiting component includes a first limiting member and a second limiting member, which are disposed opposite to each other on opposite sides of the battery assembly along a second direction.

[0015] A second aspect of this application provides a battery pack, comprising:

[0016] Lower housing;

[0017] The upper cover is connected to the lower housing and forms a receiving cavity with the lower housing;

[0018] And an integrated structure disposed within the receiving cavity.

[0019] According to the battery pack described in the second aspect of this application, the battery pack is more compact in structure, which can improve the energy density of the battery pack, and can also simplify the assembly process of the battery pack and reduce the assembly accuracy requirements.

[0020] In one possible implementation, the lower housing includes a lower housing frame and a bottom protective plate, the bottom protective plate being connected to the inner side of the lower housing frame and having protrusions.

[0021] In one possible implementation, the lower housing further includes a lifting lug assembly connected to the outside of the lower housing frame, the lifting lug assembly having lifting holes and positioning holes.

[0022] In one possible implementation, the side of the lower housing facing the upper cover forms a first undulating structure, and the side of the upper cover facing the lower housing forms a second undulating structure adapted to the first undulating structure.

[0023] A third aspect of this application provides a battery pack including the aforementioned battery pack. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 An exploded schematic diagram of a battery pack according to an embodiment of this application is shown;

[0026] Figure 2 This diagram illustrates a structure of a battery pack with its top cover removed according to an embodiment of this application.

[0027] Figure 3 A cross-sectional view of a battery pack provided according to an embodiment of this application is shown;

[0028] Figure 4 It shows Figure 3 A magnified view of part A in the image.

[0029] Figure label:

[0030] 100 - Lower shell; 110 - Lower shell frame; 120 - Bottom protective plate; 130 - End beam; 140 - Intermediate beam; 150 - Lifting lug assembly; 110a - First mounting hole; 110b - First flange; 111 - First side frame; 112 - Second side frame; 113 - Third side frame; 114 - Fourth side frame; 121 - Protrusion; 150a - Lifting hole; 150b - Positioning hole; 151 - Lifting lug beam; 150b1 - Main positioning hole; 150b2 - Secondary positioning hole;

[0031] 200-Top cover; 200a-Second mounting hole; 200b-Second flange; 200c-Recessed portion; 200c1-First recessed portion; 200c2-Second recessed portion; 210-Top cover body; 220-Edge structure; 221-First edge structure; 222-Second edge structure; 223-Third edge structure; 224-Fourth edge structure;

[0032] 300 - Integrated structure; 310 - Cold plate; 320 - Battery module; 330 - Reinforcing component; 340 - Limiting component; 311 - Liquid inlet; 312 - Liquid outlet; 321 - Cell unit; 330a - First reinforcing member; 330b - Second reinforcing member; 331 - External frame; 332 - Longitudinal beam; 333 - Crossbeam; 341 - First limiting component; 342 - Second limiting component. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] This application provides a battery pack and an electrical device including the battery pack. The electrical device includes an electrical appliance, and the battery pack can provide electrical energy to the electrical appliance. In this application embodiment, the electrical appliance can be a vehicle. Based on the design of the battery pack in this application embodiment, the vehicle has stronger power performance and smoother power delivery. The vehicle can be a new energy vehicle, such as a pure electric vehicle (PEV / BEV), a range-extended electric vehicle (REEV), a hybrid electric vehicle (HEV), or a fuel cell electric vehicle. The vehicle can also be any vehicle with a battery.

[0035] With the rapid development of new energy vehicle technology, on-board battery packs are also undergoing rapid development. An on-board battery pack refers to a battery structure that can be installed in a vehicle to provide power. From a technological evolution perspective, on-board battery packs can be divided into two main stages. The first stage is the CTM (Cell to Module) stage. In this stage, battery cells need to be integrated into modules, which are then assembled into a battery pack before being installed in the vehicle. This first-stage battery pack is characterized by high installation specificity, with clearly defined structural layers. The second stage is the CTP (Cell to Pack) stage. In this stage, the process of assembling battery cells into modules can be eliminated; the battery cells can be directly assembled into a battery pack before being installed in the vehicle. Because this second-stage battery pack eliminates the process of integrating battery cells into modules, it offers several advantages, including reduced battery pack costs, improved installation efficiency, and increased battery pack capacity.

[0036] For battery packs under the CTP architecture, a compact structural design is usually adopted. Although each cell unit can make good use of the battery pack's space to improve energy density and meet the range requirements of new energy vehicles, the various components of the battery pack have high assembly precision requirements and are difficult to assemble.

[0037] In addition, the aforementioned battery packs are typically equipped with heat dissipation structures such as liquid cooling plates to achieve heat dissipation. The cooling plates and individual cell units need to be installed separately within the battery pack housing, making the assembly process complex and requiring high assembly precision. The cooling plates and individual cell units occupy a large amount of space, which affects the energy density of the battery pack.

[0038] Based on the above situation and problems, this application provides a battery pack that is more compact in structure and can further improve the energy density of the battery pack. The battery cells and cold plates in the battery pack are designed in an integrated manner and form an integrated structure, which can simplify the assembly process and reduce the requirements for assembly accuracy.

[0039] Figure 1 An exploded schematic diagram of a battery pack according to an embodiment of this application is shown; Figure 2 A schematic diagram of a battery pack with its top cover removed, according to an embodiment of this application, is shown.

[0040] Please refer to Figure 1 and Figure 2 The battery pack in this embodiment includes a lower housing 100, an upper cover 200, and an integrated structure 300.

[0041] The lower housing 100 can serve as the main load-bearing structure of the battery pack, and it has high structural strength and rigidity.

[0042] The upper cover 200 can be connected to the lower housing 100. Specifically, the upper cover 200 can be connected to the lower housing 100 by fasteners such as screws. The upper cover 200 can form a receiving cavity with the lower housing 100.

[0043] An integrated structure 300 is disposed within the receiving cavity. This integrated structure 300 is an assembly of the battery cell unit 321 and the cold plate 310. The integrated design of the cold plate 310 and the battery cell unit 321 allows them to be located more compactly within the receiving cavity and also enables them to be assembled together.

[0044] The battery pack in this embodiment is more compact in structure, which can improve the energy density of the battery pack, and also simplify the assembly process and reduce the assembly accuracy requirements.

[0045] In some embodiments, please refer to Figure 1 The lower housing 100 includes a lower housing frame 110, which is configured as a frame structure. The lower housing 100 frame can be manufactured in one piece, for example, by stamping.

[0046] The lower shell frame 110 includes a first side frame 111, a second side frame 112, a third side frame 113, and a fourth side frame 114 connected end to end. The first side frame 111 and the second side frame 112 are arranged opposite each other along a first direction, and the third side frame 113 and the fourth side frame 114 are arranged opposite each other along a second direction.

[0047] Combination Figure 1In the coordinate system shown, the first direction can be understood as the X direction, and the second direction can be understood as the Y direction. That is, the first border 111 and the second border 112 are set at intervals along the X direction, and the third border 113 and the fourth border 114 are set at intervals along the Y direction.

[0048] In some embodiments, a first mounting hole 110a may be provided on the first frame 111, the second frame 112, the third frame 113 and the fourth frame 114, and a second mounting hole 200a may be provided at the corresponding position of the upper cover 200. Thus, the connection between the upper cover 200 and the lower housing 100 can be achieved by passing screws or the like through the first mounting hole 110a and the second mounting hole 200a.

[0049] In some specific embodiments, please refer to Figure 1 A first flange 110b is provided on the side of the lower shell frame 110 facing the upper cover 200, and the first mounting hole 110a can be formed on the first flange 110b. A second flange 200b is provided on the side of the upper cover 200 facing the lower shell frame 110, and the second mounting hole 200a can be formed on the second flange 200b.

[0050] The first flange 110b can form a larger contact area with the second flange 200b, thereby improving the connection strength and reliability between the upper cover 200 and the lower housing 100.

[0051] It is understandable that the first mounting hole 110a can be evenly arranged on the first flange 110b along the circumference, and the second mounting hole 200a can be evenly arranged on the second flange 200b along the circumference.

[0052] In some embodiments, please refer to Figure 1 The lower housing 100 also includes a bottom protective plate 120, which may be made of a material with high impact resistance, and the bottom protective plate 120 is connected to the inside of the lower housing frame 110.

[0053] The bottom guard plate 120 is a bottom protection structure in the battery pack. When the battery pack is used in a new energy vehicle and is in a high-speed operation state, the bottom guard plate 120 may be impacted by foreign objects such as stones. The bottom guard plate 120 can protect the battery pack.

[0054] The bottom protective plate 120 can be fixed to the lower shell frame 110 by means of threaded connection. In order to ensure the sealing of the battery pack, a sealing structure can be set at the connection between the bottom protective plate 120 and the lower shell frame 110.

[0055] As one implementation method, the sealing structure can be formed by filling material that fills the gap between the bottom protective plate 120 and the lower shell frame 110. The filling material can be potting compound, etc.

[0056] As another implementation, a sealing layer structure can be provided between the bottom protective plate 120 and the lower shell frame 110. The sealing layer structure can be made of an elastically deformable material, such as rubber or silicone, and the sealing layer structure can form a seal between the bottom protective plate 120 and the lower shell frame 110.

[0057] In some embodiments, please refer to Figure 1 The bottom guard plate 120 is provided with a protrusion 121, the specific shape of which is not limited. For example, in Figure 1 In the example shown, the bump 121 can be rectangular; in other embodiments, the bump 121 can be rhomboid, circular, etc.

[0058] The protrusions 121 on the bottom guard plate 120 can enhance the structural strength and rigidity of the bottom guard plate 120, thereby improving the structural stability of the battery pack.

[0059] In some specific embodiments, the protrusions 121 are evenly arranged on the bottom guard plate 120 along the X and Y directions, thereby making the distribution of strength and stiffness of the bottom plate more uniform.

[0060] In some embodiments, please refer to Figure 1 End beams 130 are provided on both sides of the bottom protective plate 120 along the second direction, and the end beams 130 abut against the lower shell frame 110 from the inside.

[0061] The end beams 130, located on both sides of the bottom protective plate 120, can enhance the structural strength of the lower shell frame 110 from the inside. In specific design, the end beams 130 can be welded to the inside of the lower shell frame 110. This not only enhances structural strength but also avoids stress concentration, reducing the risk of weld cracking or local deformation of the lower shell frame 110 due to stress concentration.

[0062] In some embodiments, please refer to Figure 1 An intermediate beam 140 is also provided on the bottom guard plate 120. The intermediate beam 140 extends along the second direction and is spaced apart along the first direction. Both ends of the intermediate beam 140 can be connected to the end beam 130.

[0063] The intermediate beam 140 can improve the overall strength of the lower housing 100, and the intermediate beam 140 can serve as a force transmission channel to transmit force. For example, when one side of the lower housing 100 is involved in a collision, the force generated by the collision can be transmitted to the end beam 130 on the corresponding side. The end beam 130 then transmits the force along the intermediate beam 140 to the other end beam 130, thereby realizing the transmission of force between the end beam 130 and the intermediate beam 140. This can reduce the local impact of the force on the lower housing 100, thereby improving the safety performance of the battery pack.

[0064] The intermediate beam 140 can be connected to the end beam 130 by welding.

[0065] The specific number of the intermediate beams 140 is not limited; for example, in Figure 1 In the example shown, there are three intermediate beams 140. It is understood that in other embodiments, for example, when the size of the lower housing 100 is large, the number of intermediate beams 140 may also be four or five, etc.

[0066] In some embodiments, please refer to Figure 1 The lower housing 100 has a first undulating structure on the side facing the upper cover 200, and the upper cover 200 has a second undulating structure on the side facing the lower housing 100 that is adapted to the first undulating structure.

[0067] It should be noted that the first uneven structure indicates that the side of the lower shell 100 facing the upper cover 200 is not located on the same horizontal plane. For example, taking the lower shell frame 110 mentioned earlier as an example, the first side frame 111, the second side frame 112, the third side frame 113, and the fourth side frame 114 have different heights, or one of the first side frame 111, the second side frame 112, the third side frame 113, and the fourth side frame 114 has a part with different heights. For example, in Figure 1 In the example shown, the first border 111 has a first height, the second border 112 has a second height, the first border 111 is higher than the second border 112, and the third border 113 and the fourth border 114 have a third height.

[0068] In some embodiments, the second border 112 has a structure that is high in the middle and low at both ends, and the third border 113 and the fourth border 114 have a structure that is low in the middle and high at both ends.

[0069] In the above embodiments, by designing the height of each component of the lower shell frame 110, the overall strength of the lower shell 100 can be improved. The undulating structure can disperse the stress of the lower shell 100, thereby improving the bending strength, torsional strength and deformation resistance of the lower shell 100.

[0070] Correspondingly, the second undulating structure indicates that the side of the upper cover 200 facing the lower housing 100 is not located in the same horizontal plane, for example, in Figure 1In the example shown, the upper cover 200 includes an upper cover body 210 and an edge structure 220 connected to the upper cover body 210. The edge structure 220 includes a first edge structure 221 connected to the first frame 111, a second edge structure 222 connected to the second frame 112, a third edge structure 223 connected to the third frame 113, and a fourth edge structure 224 connected to the fourth frame 114. The first edge structure 221, the second edge structure 222, the third edge structure 223, and the fourth edge structure 224 all extend from the edge of the upper cover body 210 to the upper cover 200, but the lengths of extension are different. Among them, the first edge structure 221 has the shortest extension length, the second edge structure 222 has a medium extension length, and the third edge structure 223 and the fourth edge structure 224 have the longest extension lengths.

[0071] In the above description, height refers to the dimension of the corresponding structure in the Z direction.

[0072] In some specific embodiments, please refer to Figure 1 To enhance the structural strength of the cover 200, a recessed portion 200c is formed on the cover body 210, which can adapt to the overall recessed structure of the cover 200.

[0073] In some specific embodiments, please refer to Figure 1 The recessed portion 200c includes a first recessed portion 200c1 that penetrates the upper cover body 210 along a first direction and a second recessed portion 200c2 located on both sides of the first recessed portion 200c1. The second recessed portion 200c2 is symmetrically arranged on both sides of the first recessed portion 200c1.

[0074] The first recess 200c1 and the second recess 200c2 can improve the structural strength and rigidity of the top cover 200 in the first and second directions.

[0075] In some embodiments, please refer to Figure 1 The lower housing 100 also includes a lifting lug assembly 150, which is connected to the outside of the lower housing frame 110. The lifting lug assembly 150 is provided with a lifting hole 150a and a positioning hole 150b.

[0076] The lifting lug assembly 150 is used to transport and load the battery pack, and also to install the battery pack on the vehicle.

[0077] In this embodiment, the lifting lug assembly 150 is connected to the outside of the lower shell frame 110 without occupying the internal space of the battery pack, which can improve the energy density of the battery pack. The lifting lug assembly 150, together with the aforementioned end beam 130 and intermediate beam 140, can improve the overall strength of the lower shell 100.

[0078] In some embodiments, the lug assembly 150 includes a pair of lug beams 151 disposed on the outside of the lower shell frame 110 along a second direction.

[0079] In some specific embodiments, please refer to Figure 1 and Figure 2 The lifting hole 150a can be a round hole with a diameter of 10mm, and the positioning hole 150b can be set between two adjacent lifting holes 150a.

[0080] In some specific embodiments, the positioning hole 150b includes a main positioning hole 150b1 and a secondary positioning hole 150b2. The diameter of the main positioning hole 150b1 is larger than the diameter of the secondary positioning hole 150b2. The precise positioning of the battery pack can be achieved by combining positioning holes 150b with different diameters.

[0081] In the above embodiments, the configuration of the lifting lug assembly 150 enables the battery pack to be compatible with the AGV trolley, which can greatly improve the automation level and efficiency of the production line, reduce manual intervention, lower production costs, and improve assembly accuracy and safety.

[0082] In the embodiments of this application, please refer to Figure 1 and Figure 2 The integrated structure 300 includes a cold plate 310, a battery module 320, and a reinforcing module 330.

[0083] The cold plate 310 can adopt a traditional structure with internal flow channels, and heat dissipation can be achieved by the flow of refrigerant in the flow channels.

[0084] The cold plate 310 has a liquid inlet 311 and a liquid outlet 312, which are located at both ends of the cold plate 310. The refrigerant can flow into the flow channel from the liquid inlet 311 and flow out from the liquid outlet 312.

[0085] The cold plate 310 is also equipped with a mounting structure, such as threaded holes. The cold plate 310 can be connected to the lower housing 100 by fasteners such as screws. For example, the cold plate 310 can be connected to the end beam 130 and the intermediate beam 140 mentioned above.

[0086] The battery assembly 320 is an collection of battery cell units 321. The battery assembly 320 typically includes multiple battery cell units 321, which are arranged along a first direction. This application does not limit the specific type of battery cell unit 321.

[0087] The battery assembly 320 is connected to one side of the cold plate 310. The outer periphery of the battery assembly 320 and the cold plate 310 form a reserved installation area. The reinforcing assembly 330 is disposed in the reserved installation area and is connected to the cold plate 310.

[0088] It is understandable that the coverage area of ​​the cold plate 310 is larger than that of the battery module 320, so that after the battery module 320 is connected to the cold plate 310, the aforementioned reserved installation area can be formed on the outer periphery of the battery module 320. By setting the reinforcing component 330 in the reserved installation area, the overall strength of the integrated structure 300 can be improved.

[0089] The integrated structure 300 in this embodiment can combine the cold plate 310 and the battery module 320, making the cold plate 310 and the battery module 320 more compact in structure, which can improve the energy density of the battery pack. At the same time, based on this integrated design, the assembly process of the battery pack can be simplified and the assembly accuracy requirements can be reduced.

[0090] Figure 3 A cross-sectional view of a battery pack provided according to an embodiment of this application is shown; Figure 4 It shows Figure 3 A magnified view of part A in the image.

[0091] In some embodiments, please refer to Figures 1 to 3 The reinforcing component 330 includes an outer frame 331 and an internal reinforcing beam, with the internal reinforcing beam disposed within the outer frame 331.

[0092] The outer frame 331 has a hollow structure, which can improve the rigidity of the reinforcing component 330. Setting internal reinforcing beams in the outer frame 331 can improve the strength of the reinforcing component 330.

[0093] In some specific embodiments, the internal reinforcing beams include crossbeams 333 and longitudinal beams 332, which are arranged alternately within the outer frame 331.

[0094] As described above, the outer frame 331 can be arranged on both sides of the battery assembly 320 along the first direction. The outer frame 331 extends along the second direction, the longitudinal beam 332 extends along the first direction and is located in the XZ plane, and the cross beam 333 extends along the first direction and is located in the XY plane.

[0095] In some embodiments, please refer to Figure 1 and Figure 2 The reinforcing component 330 includes a first reinforcing member 330a and a second reinforcing member 330b, which are disposed opposite to each other on opposite sides of the battery assembly 320 along a first direction.

[0096] Both the first reinforcing member 330a and the second reinforcing member 330b can adopt the structural form of the external frame 331 and the internal reinforcing beam described above. In other embodiments, the first reinforcing member 330a and the second reinforcing member 330b can also adopt other structures.

[0097] In some embodiments, please refer to Figure 1 The integrated structure 300 also includes a limiting component 340, which is disposed on the cold plate 310 and connected between the first reinforcing member 330a and the second reinforcing member 330b.

[0098] The limiting component 340 can limit the battery assembly 320. Connecting the limiting component 340 to the first reinforcing member 330a and the second reinforcing member 330b can improve the strength of the first reinforcing member 330a and the second reinforcing member 330b. The limiting component 340 can also limit the battery assembly 320, which can counteract or disperse the expansion force of the battery assembly 320 and prevent the battery assembly 320 from deforming.

[0099] The limiting component 340 includes a first limiting member 341 and a second limiting member 342, which are disposed opposite to each other on opposite sides of the battery assembly 320 along a second direction.

[0100] The first limiting member 341 and the second limiting member 342 can be hollow, and when the battery pack is undergoing charge and discharge cycles, the first limiting member 341 and the second limiting member 342 can buffer the expansion of the battery assembly 320.

[0101] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.

[0102] In the description of this application, it should be understood that the terms "comprising" and "having" and any variations thereof used in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0103] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the connection within two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An integrated structure, characterized in that, include: Cold plate; A battery assembly includes multiple battery cell units, the battery assembly is connected to one side of the cold plate, and the outer periphery of the battery assembly and the cold plate form a reserved installation area; And a reinforcing component, which is disposed in the reserved installation area and connected to the cold plate; The reinforcing component includes an outer frame and an internal reinforcing beam, with the internal reinforcing beam disposed within the outer frame.

2. The integrated structure according to claim 1, characterized in that, The internal reinforcing beams include crossbeams and longitudinal beams, which are arranged alternately within the external frame.

3. The integrated structure according to claim 1, characterized in that, The reinforcing component includes a first reinforcing member and a second reinforcing member, which are disposed opposite to each other on opposite sides of the battery assembly along a first direction.

4. The integrated structure according to claim 3, characterized in that, The integrated structure also includes a limiting component, which is disposed on the cold plate and connected between the first reinforcing member and the second reinforcing member.

5. The integrated structure according to claim 4, characterized in that, The limiting component includes a first limiting member and a second limiting member, which are disposed opposite to each other on opposite sides of the battery assembly along a second direction.

6. A battery pack, characterized in that, include: Lower housing; The upper cover is connected to the lower housing and forms a receiving cavity with the lower housing; And the integrated structure according to any one of claims 1 to 5, wherein the integrated structure is disposed within the receiving cavity.

7. The battery pack according to claim 6, characterized in that, The lower housing includes a lower housing frame and a bottom protective plate. The bottom protective plate is connected to the inner side of the lower housing frame and has protrusions.

8. The battery pack according to claim 7, characterized in that, The lower housing also includes a lifting lug assembly, which is connected to the outside of the lower housing frame. The lifting lug assembly is provided with lifting holes and positioning holes.

9. The battery pack according to claim 6, characterized in that, The lower housing has a first undulating structure on the side facing the upper cover, and the upper cover has a second undulating structure on the side facing the lower housing that is adapted to the first undulating structure.

10. An electrical appliance, characterized in that, The battery pack includes any one of claims 6 to 9.

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