Battery frame, battery device and electric appliance

Abstract

The application provides a battery frame, a battery device and an electric equipment. The battery frame comprises a frame and a connecting beam. The frame defines a receiving cavity for accommodating a battery pack. The connecting beam is arranged in the receiving cavity and extends along a first direction. The connecting beam is slidably connected with the frame through a moving connection structure, so that the frame can be deformed in the first direction and absorb the deformation amount caused by the battery pack. The application can improve the safety and service life of the battery frame.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to a battery frame, battery device, and electrical equipment. Background Technology

[0002] The battery tray is a major component of the battery pack, primarily used to support, secure, and protect it. A battery tray typically includes a base plate, a frame, crossbeams, and longitudinal beams. The frame surrounds the base plate and, together with the base plate, defines the accommodating space. The crossbeams and longitudinal beams are positioned within this accommodating space, dividing it into several areas for accommodating the individual battery cells of the battery pack.

[0003] However, current battery trays cannot withstand large expansion forces, causing the battery trays to deform or even break at some joints, reducing the safety and lifespan of the battery trays. Utility Model Content

[0004] In view of the above problems, embodiments of this application provide a battery frame, a battery device, and an electrical device, which can improve the safety and service life of the battery frame.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0006] A first aspect of this application provides a battery frame, comprising:

[0007] A frame that defines a receiving cavity for accommodating a battery pack;

[0008] A connecting beam is disposed within the receiving cavity and extends along a first direction; the connecting beam is movably connected to the frame via a movable connecting structure, so that the connecting beam can deform in the first direction.

[0009] In one possible implementation, the movable connection structure includes a sliding part and a connecting part; the connecting beam is slidably connected to the sliding part; and the connecting part is fixedly connected to the frame.

[0010] In one possible implementation, the mobile connection structure includes a first connecting plate having a first connecting hole, the first connecting hole being larger in the first direction than in the third direction, the third direction being the height direction of the frame and intersecting the first direction;

[0011] The first connecting hole constitutes the sliding part.

[0012] In one possible implementation, the connecting beam is slidably mounted in the first connecting hole via a first fastener.

[0013] In one possible implementation, the first connecting hole is an oblong hole.

[0014] In one possible implementation, the first fixing member includes a fixing rod portion, which includes a first fixing rod portion and a second fixing rod portion connected to each other. The first fixing rod portion is disposed in the first connecting hole, and the diameter of the first fixing rod portion is larger than the diameter of the second fixing rod portion. The second fixing rod portion is connected to the connecting beam.

[0015] In one possible implementation, the connecting beam is provided with a first threaded hole, and the second fixing rod portion is formed with an external thread;

[0016] The second fixing rod is threaded into the first threaded hole.

[0017] In one possible implementation, the first fastener further includes a head connected to the first fixing rod portion, a first elastic washer, and a first fixing washer;

[0018] The first elastic washer and the first fixing washer are sequentially sleeved on the first fixing rod, with the first fixing washer located between the first elastic washer and the head, and the first elastic washer abutting against the first connecting plate.

[0019] In one possible implementation, the mobile connection structure further includes a second connecting plate, which is connected to the first connecting plate and has a preset angle with the first connecting plate;

[0020] The second connecting plate constitutes the connecting part.

[0021] In one possible implementation, the battery frame includes a second fastener; a second connecting hole is provided on the second connecting plate; the second connecting hole constitutes a connecting part, and the second fastener passes through the second connecting hole and is fixedly connected to the frame;

[0022] Alternatively, the second connecting plate and the frame are integrally formed.

[0023] In one possible implementation, along the second direction, both sides of the connecting beam are slidably connected to the frame via the movable connecting structure;

[0024] The second direction and the third direction intersect the first direction in pairs.

[0025] In one possible implementation, both the first connecting hole and the second connecting hole include multiple holes; the multiple first connecting holes are arranged at intervals along a third direction on the first connecting plate, and the multiple second connecting holes are arranged at intervals along a third direction on the second connecting plate.

[0026] In one possible implementation, the connecting beams comprise a plurality of beams, which are spaced apart along the second direction.

[0027] In one possible implementation, the battery frame further includes a first support plate; along a third direction, the first support plate is disposed on one side of the frame and fixedly connected to the frame;

[0028] Wherein, the third direction is the height direction of the border.

[0029] In one possible implementation, the first support plate includes a first flange portion that covers the outer surface of the frame and is fixedly connected to the frame.

[0030] In one possible implementation, the first flange is provided on at least both sides of the first support plate in the first direction;

[0031] And / or, the first flange portion is integrally formed with the first support plate.

[0032] In one possible implementation, an adhesive layer is further provided on the area of ​​the first support plate opposite to the receiving cavity;

[0033] The adhesive layer is adapted to be connected to the battery pack.

[0034] In one possible implementation, the battery frame further includes a protective plate disposed on the side of the first support plate opposite to the frame and at least fixedly connected to the frame.

[0035] In one possible implementation, the battery frame further includes a third fastener; the protective plate is provided with a plurality of third connecting holes along the edge region of the first direction, the size of the third connecting holes in the first direction being larger than the size of the third connecting holes in the second direction;

[0036] The third fastener passes through the third connecting hole and is fixedly connected to the first support plate and the frame; wherein, the third fastener is also capable of sliding in the third connecting hole.

[0037] In one possible implementation, the protective plate is provided with a plurality of the third connecting holes in the middle region along the first direction, and the battery frame further includes a fourth fixing member, which passes through the third connecting holes located in the middle region of the protective plate and is fixedly connected to the first support plate.

[0038] A second fixing washer and a second elastic washer are provided between the head of the fourth fixing member and the first support plate.

[0039] In one possible implementation, the first support plate is provided with a connecting post on the side facing the guard plate, and the connecting post has a second threaded hole;

[0040] The third connecting hole, located in the middle area of ​​the guard plate, is used for the connecting post to pass through;

[0041] The fourth fastener passes through the protective plate and is screwed into the second threaded hole.

[0042] In one possible implementation, the guard plate further includes a plurality of protrusions, which are arranged at circumferential intervals along the guard plate; a clearance zone is formed between any adjacent protrusions.

[0043] In one possible implementation, a heat exchanger is provided between the first support plate and the protective plate, the heat exchanger being adapted to exchange heat with the battery pack.

[0044] In one possible implementation, a thermally conductive adhesive layer is provided between the first support plate and the heat exchanger.

[0045] In one possible implementation, an insulation layer is provided between the heat exchanger and the protective plate.

[0046] In one possible implementation, the battery frame further includes a second support plate; the second support plate is disposed opposite to the first support plate in the third direction and is fixedly connected to the frame.

[0047] In one possible implementation, the second support plate includes a second flange that covers the outer surface of the frame and is fixedly connected to the frame.

[0048] In one possible implementation, the second flange is provided on at least both sides of the second support plate in the first direction;

[0049] And / or, the second flange portion is integrally formed with the second support plate.

[0050] A second aspect of this application provides a battery device, including a battery frame as described in the first aspect; the battery pack is disposed within a receiving cavity of the battery frame and located on at least one side of a connecting beam.

[0051] A third aspect of the embodiments of this application provides an electrical device, including an electrical device and the battery device described in the second aspect;

[0052] The battery device is used to provide electrical energy to the electrical device.

[0053] In the battery frame, battery device, and electrical equipment provided in this application embodiment, the connecting beam is movably connected to the frame via a movable connecting structure. This allows the frame to deform in a first direction and absorb the deformation caused by the battery pack. When the battery pack expands and deforms, the frame and connecting beam move relative to each other to absorb the deformation caused by the battery pack. This prevents deformation or even breakage at the connection point between the connecting beam and the frame, improving the safety and service life of the battery frame.

[0054] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the battery frame, battery device, and electrical equipment provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific implementation. Attached Figure Description

[0055] 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.

[0056] Figure 1 This is a schematic diagram of the structure of the battery device provided in the embodiments of this application;

[0057] Figure 2 A schematic diagram of the battery frame provided in an embodiment of this application;

[0058] Figure 3 A partial structural diagram of the battery frame provided in the embodiments of this application. Figure 1 ;

[0059] Figure 4 for Figure 3 Top view;

[0060] Figure 5 A partial structural diagram of the battery frame provided in the embodiments of this application. Figure 2 ;

[0061] Figure 6 For along Figure 5 A cross-sectional view along the AA direction;

[0062] Figure 7 A schematic diagram of the first fastener provided in an embodiment of this application;

[0063] Figure 8A schematic diagram of the connecting plate of the movable connection structure provided in the embodiments of this application;

[0064] Figure 9 A schematic diagram of the protective plate provided in an embodiment of this application;

[0065] Figure 10 for Figure 9 Enlarged view of region B in the middle;

[0066] Figure 11 A schematic diagram of the first support plate provided in an embodiment of this application;

[0067] Figure 12 for Figure 11 An enlarged schematic diagram of region C;

[0068] Figure 13 A top view of the battery device provided in the embodiments of this application;

[0069] Figure 14 For along Figure 13 A cross-sectional view along the DD direction;

[0070] Figure 15 for Figure 14 Enlarged schematic diagram of region E in the middle;

[0071] Figure 16 For along Figure 13 A cross-sectional view along the FF direction;

[0072] Figure 17 for Figure 16 Enlarged schematic diagram of region G in the middle;

[0073] Figure 18 This is a schematic diagram of the third fastener provided in an embodiment of this application.

[0074] Explanation of reference numerals in the attached figures:

[0075] 100: Frame; 110: First support beam; 120: Second support beam; 130: Receiving cavity;

[0076] 200: Connecting beam; 210: First threaded hole;

[0077] 300: Movable connection structure; 310: Sliding part; 320: Connecting part; 330: First connecting plate; 340: First fixing member; 341: First fixing rod part; 342: Second fixing rod part; 343: Head; 344: First elastic washer; 345: First fixing washer; 350: Second connecting plate; 360: Second fixing member;

[0078] 400: First support plate; 410: First flange; 420: Adhesive layer; 430: Connecting column;

[0079] 500: Guard plate; 510: Third connecting hole; 520: Third fastener; 530: Fourth fastener; 540: Protrusion; 550: Clearance area; 560: Second fixing washer; 570: Second elastic washer;

[0080] 600: Second support plate; 610: Second flange;

[0081] 700: Heat exchanger; 710: Thermally conductive adhesive layer; 720: Insulation layer;

[0082] 800: Battery pack;

[0083] 900: Battery frame;

[0084] 1000: Battery device. Detailed Implementation

[0085] As described in the background section, battery trays in related technologies suffer from low safety performance. The inventors discovered that this problem arises because the crossbeams and longitudinal beams are fixed to the frame by welding. However, when the battery pack generates significant expansion forces, the rigid connections between the crossbeams and longitudinal beams and the frame cannot withstand these forces, causing the battery tray to deform or even break at some joints, thus reducing its safety and lifespan.

[0086] To address the aforementioned technical problems, this application provides a battery frame, a battery pack, and an electrical device, wherein a connecting beam is movably connected to a frame via a movable connecting structure. This allows the frame to deform in a first direction and absorb the deformation caused by the battery pack. When the battery pack expands and deforms, the frame and the connecting beam move relative to each other to absorb the deformation caused by the battery pack. This prevents deformation or even breakage at the connection point between the connecting beam and the frame, improving the safety and lifespan of the battery frame.

[0087] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0088] Please refer to Figure 1 This application provides a battery frame 900, which is applied in a battery device 1000 to support a battery pack 800.

[0089] Please refer to Figures 2 to 4 The battery frame 900 includes a frame 100 that defines a receiving cavity 130 for accommodating the battery pack 800. It should be understood that the frame 100 can be a single structure or other structures.

[0090] For example, please refer to Figure 3 The frame 100 includes two first support beams 110 and two second support beams 120. The two first support beams 110 extend along a first direction and are spaced apart along a second direction. The two second support beams 120 are disposed between the two first support beams 110 and are fixedly connected to the first support beams 110. For example, one end of one second support beam 120 is welded to one of the first support beams 110, and the other end is welded to the other first support beam 110.

[0091] In this way, the first support beam 110 and the second support beam 120 are separately designed, allowing for flexible configuration of their shapes and materials, thus improving the design convenience of the frame 100. For example, the first support beam 110 can be made of extruded aluminum profiles or die-cast aluminum parts. The second support beam 120 can also be made of extruded aluminum profiles.

[0092] In addition, the connection points of the two first support beams 110 and the two second support beams 120 are located at the corners of the frame 100, which has the advantages of small deformation and high structural strength.

[0093] Please refer to Figure 3 and Figure 4 The battery frame 900 also includes a connecting beam 200 disposed in the receiving cavity 130 and extending along a first direction to divide the receiving cavity 130 into at least two sub-receiving cavities. Each sub-receiving cavity is used to house a battery pack 800. It should be understood that the battery pack 800 also includes multiple battery cells.

[0094] It should be noted that during the fixing of the battery pack 800, a constraint force of MPa level needs to be applied to the large surface of the battery pack 800 in order to maintain the stability of the battery device.

[0095] The battery pack 800 generates expansion forces in different directions during operation, but there is one direction where the expansion force is the greatest. In this embodiment, the first direction is defined as being consistent with the direction in which the battery pack 800 generates the greatest expansion force.

[0096] With attachment Figure 1The orientation shown, combined with the example of a rectangular battery cell, illustrates how multiple battery cells are arranged along their thickness direction to form a battery pack 800. During charging and discharging, lithium metal undergoes significant volume changes, with the greatest expansion force occurring in the thickness direction of the battery cell. Therefore, in this embodiment, the first direction is defined as the thickness direction of the battery cell; that is, the first direction is the thickness direction of the battery cell. Figure 1 Center Y direction.

[0097] Continue to refer to Figure 1 The connecting beam 200 is slidably connected to the frame 100 via the movable connecting structure 300. For example, the connecting beam 200 is movably connected to the second support beam 120 via the movable connecting structure 300.

[0098] When the battery pack 800 deforms and expands, the frame 100 can deform in the first direction to absorb the deformation caused by the battery pack 800. In this way, the expansion force generated by the battery pack 800 can be converted into the power to drive the frame 100 to move. This prevents deformation or even breakage at the connection between the connecting beam 200 and the frame 100, improving the safety and service life of the battery frame 900.

[0099] It should be noted that the number of connecting beams 200 can be selected in various ways in this embodiment. In one example, there is one connecting beam 200. In another example, there are multiple connecting beams 200, which are arranged at intervals along the second direction. In this way, the receiving cavity 130 can be divided into multiple sub-receiving cavities, so as to facilitate a more reasonable layout of the battery pack 800.

[0100] When there are multiple connecting beams 200, at least some of the connecting beams 200 can be connected to the frame 100 through the movable connecting structure 300.

[0101] It should also be noted that the movable connection structure 300 and the border 100 are movably connected, which may include a sliding connection between the movable connection structure 300 and the border, or a scrolling connection.

[0102] As one possible implementation for the active connection between the mobile connection structure 300 and the frame 100, please refer to Figures 5 to 8 The movable connection structure 300 includes a sliding part 310 and a connecting part 320. The connecting beam 200 is slidably connected to the sliding part 310, and the connecting part 320 is fixedly connected to the frame 100.

[0103] The sliding part 310 can be implemented in several ways. For example, the sliding part 310 can be a slide rail, and the connecting beam 200 can be slidably mounted on the sliding part 310 via a slider. Another example is the movable connection structure 300, which includes a first connecting plate 330 with a first connecting hole. The dimension of the first connecting hole in a first direction is larger than its dimension in the direction perpendicular to the frame 100. It should be understood that the direction perpendicular to the frame 100 can be the height direction of the frame 100, i.e., the Z direction in the figure.

[0104] The first connecting hole forms the sliding part 310. At this time, the connecting beam 200 can be slidably installed in the first connecting hole by means of a guide post or other structure.

[0105] This embodiment increases the size of the first connecting hole in the first direction, ensuring that there is sliding space between the connecting beam 200 and the movable connecting structure 300. Thus, when the battery pack 800 generates a large expansion force in the first direction, this force can cause the connecting beam 200 to slide along the first direction through the first connecting hole. This dissipates the expansion force, preventing deformation or even breakage at the connection between the connecting beam 200 and the frame 100, thereby improving the stability and safety of the battery frame 900.

[0106] It should be noted that the shape of the first connecting hole can be chosen in several ways. For example, the first connecting hole can be rectangular. Another example is an oblong hole. This utilizes the arc of the oblong hole to reduce stress concentration at the hole edge, thereby reducing the risk of material fatigue and fracture. Furthermore, because the oblong hole provides uniform stress distribution and smooth sliding, the risk of wear and damage to the connecting beam 200 is reduced, thus decreasing maintenance frequency and costs.

[0107] In order for the connecting beam 200 to slide in the first connecting hole, the connecting beam 200 can be slidably connected to the sliding part 310 by a fastener.

[0108] As another possible implementation of the movable connection structure 300 being movably connected to the frame 100, the movable connection structure 300 may include rollers, and the connecting beam 200 is provided with a limiting groove, the length direction of which is parallel to the first direction. The rollers can be fixed to the frame 100 by hinged supports, and the rollers can also slide within the limiting grooves. When the battery pack 800 deforms and expands, the rollers can roll out of the limiting grooves, thus allowing the connecting beam 200 to form a displacement in the first direction to absorb the deformation caused by the battery pack 800.

[0109] In one possible implementation, please refer to Figure 6 and Figure 7The connecting beam 200 is slidably positioned in the first connecting hole via the first fixing member 340. It should be understood that the first fixing member 340 and the connecting beam 200 can be a single piece; for example, the first fixing member 340 can be directly integrally formed with the connecting beam 200, thus simplifying the assembly of the connecting beam 200 and the first fixing member 340. Alternatively, the first fixing member 340 and the connecting beam 200 can be separate structures. This allows for flexible placement of the first fixing member 340 and the first connecting hole according to requirements.

[0110] The first fixing member 340 can be a fixing post or a bolt. For example, the first fixing member 340 includes a fixing rod portion, wherein the fixing rod portion includes a first fixing rod portion 341 and a second fixing rod portion 342 connected to each other. The first fixing rod portion 341 is disposed in a first connecting hole, and the diameter of the first fixing rod portion 341 is larger than the diameter of the second fixing rod portion 342.

[0111] In this way, a stepped surface is formed between the first fixing rod portion 341 and the second fixing rod portion 342, which can contact the surface of the connecting beam 200. This increases the contact area between the first fixing member 340 and the connecting beam 200, thereby improving the connection strength between the first fixing member 340 and the connecting beam 200.

[0112] The second fixing rod portion 342 is connected to the connecting beam 200, and the connection between the second fixing rod portion 342 and the connecting beam 200 can be a plug-in connection or other methods. For example, the connecting beam 200 is provided with a first threaded hole 210; the second fixing rod portion 342 has an external thread; and the second fixing rod portion 342 is threaded into the first threaded hole 210. This creates a strong connection between the second fixing rod portion 342 and the first threaded hole 210, capable of withstanding large tensile and shear forces, ensuring the stability between the connecting beam 200 and the frame 100. Furthermore, the threaded connection facilitates installation and disassembly.

[0113] Please continue to refer to this. Figure 7 The first fixing member 340 also includes a head 343, a first elastic washer 344, and a first fixing washer 345. The head 343 is connected to the end of the first fixing rod 341 that is away from the second fixing rod 342, and is integrally formed with the fixing rod.

[0114] A first elastic washer 344 and a first fixing washer 345 are sequentially sleeved on the first fixing rod portion 341, with the first fixing washer 345 located between the first elastic washer 344 and the head 343. The first elastic washer 344 abuts against the first connecting plate 330. The first connecting plate 330 serves to limit the movement of the first elastic washer 344.

[0115] Given that a stepped surface is formed between the first fixing rod portion 341 and the second fixing rod portion 342, this stepped surface can contact the surface of the connecting beam 200. This ensures that the distance between the stepped surface and the connecting beam 200 is constant, and the locking force between the connecting beam 200 and the movable connecting structure 300 is provided by the first elastic washer 344, preventing it from becoming excessive and completely locking the connection. This ensures that the connecting beam 200 can slide relative to the movable connecting structure 300 to absorb deformation, preventing damage to the connection structure between the connecting beam 200 and the frame 100.

[0116] It should be understood that in this embodiment, the first elastic washer 344 can be a spring washer, while the first fixing washer 345 can be made of metal or polymer material.

[0117] In one possible implementation, the movable connection structure 300 further includes a second connecting plate 350, which is connected to the first connecting plate 330 and has a preset angle with the first connecting plate 330. The preset angle needs to be freely set according to the shape of the connection between the connecting beam 200 and the frame 100. For example, the preset angle is 90°. This facilitates the layout and connection of the connecting beam 200 and the frame 100.

[0118] It should be understood that the configuration of the connecting part 320 can be freely configured according to the connection method between the second connecting plate 350 and the frame 100. Furthermore, the second connecting plate 350 and the frame 100 can be separate components, or other options are possible. For example, the second connecting plate 350 and the frame 100 can be integrally molded, which can both provide structural strength to the battery frame 900 and reduce the manufacturing cost of the battery frame 900.

[0119] In some embodiments, the second connecting plate 350 can be connected to the frame 100 by welding. In this case, at least a portion of the surface of the second connecting plate 350 facing the frame 100 constitutes the connecting portion 320.

[0120] In other embodiments, the second connecting plate 350 can be connected to the frame 100 by bolts. In this case, a portion of the second connecting plate 350 can constitute the connecting part 320. Exemplarily, the second connecting plate 350 is provided with a second connecting hole. The second fastener 360 passes through the second connecting hole and is fixedly connected to the frame 100. The shape of the second connecting hole includes, but is not limited to, a circle.

[0121] In one possible implementation, please refer to Figure 6Along the second direction, both sides of the connecting beam 200 are slidably connected to the frame 100 via the movable connecting structure 300. The second direction, the third direction, and the first direction intersect each other in pairs; for example, the first direction, the second direction, and the third direction are perpendicular to each other in pairs. The second direction is the X direction in the figure.

[0122] By providing movable connection structures 300 on both sides of the connecting beam 200, stress concentration caused by excessive force on one side can be avoided, thereby improving the overall stability of the battery frame 900. The dual-sided connection also effectively prevents the connecting beam 200 from shifting or tilting in the second direction, ensuring the battery pack 800 remains in a stable position.

[0123] To further enhance the deformation absorption capability of the movable connection structure 300, in this embodiment, both the first and second connection holes include multiple holes; the multiple first connection holes are spaced apart along a third direction on the first connection plate 330, and the multiple second connection holes are spaced apart along a third direction on the second connection plate 350. A first fixing member 340 passes through each first connection hole, and a second fixing member 360 passes through each second connection hole.

[0124] Please continue to refer to this. Figure 1 In one possible implementation, the battery frame 900 further includes a first support plate 400; the first support plate 400 is disposed on one side of the frame 100 and fixedly connected to the frame 100 along a third direction. The third direction is perpendicular to the frame 100, i.e., the Z direction in the figure.

[0125] In addition to supporting the battery pack 800, the first support plate 400 can also withstand the expansion force of the battery pack 800 in three directions. In this embodiment, the first support plate 400 is made of high-strength steel.

[0126] It should be noted that the first support plate 400 can be connected to the bottom surface of the frame 100, or other options are also available.

[0127] For example, the first support plate 400 includes a first flange 410, which covers the outer surface of the frame 100 and is fixedly connected to the frame 100.

[0128] In this way, the first support plate 400 has a fully enclosed or semi-enclosed structure, which can seal the receiving cavity 130 and effectively prevent dust, moisture or other foreign objects from entering the receiving cavity 130, thus protecting the battery pack 800 from the influence of the external environment.

[0129] As for the first flange 410 extending circumferentially along the first support plate 400, there are other options, which can be freely set according to the actual situation.

[0130] For example, the first flange portion 410 is provided on at least both sides of the first support plate 400 in the first direction; thus, the first flange portion 410 can be connected to the two second support beams 120. Thus, the first flange portion 410 is located in the first direction to better absorb the expansion force formed by the battery pack 800 and improve the stability of the frame 100.

[0131] And / or, the first flange 410 is integrally formed with the first support plate 400. The integrally formed structure can improve the structural strength of the first support plate 400, effectively avoid stress concentration in the first support plate 400, and improve the deformation resistance and load-bearing capacity of the first support plate 400.

[0132] The first support plate 400 is also used for connecting the battery pack 800. The first support plate 400 can be connected to the battery pack 800 by bonding or other means. In one possible implementation, an adhesive layer 420 is provided on the area of ​​the first support plate 400 opposite to the receiving cavity 130, and the adhesive layer 420 is adapted to connect to the battery pack 800. Thus, through the provision of the adhesive layer 420, a strong connection is formed between the first support plate 400 and the battery pack 800, capable of withstanding greater tensile and shear forces, ensuring the stability of the battery pack 800. Furthermore, compared to bolted or welded connections, the adhesive layer 420 provides a uniform stress distribution, avoiding material fatigue or damage caused by excessive local stress.

[0133] Please refer to Figure 1 , Figure 9 and Figure 10 In one possible implementation, the battery frame 900 further includes a protective plate 500, which is disposed on the side of the first support plate 400 opposite to the frame 100 and is fixedly connected to at least the first support plate 400. It should be understood that the protective plate 500 can be connected to the first support plate 400, and also to the frame 100 and the connecting beam 200.

[0134] The protective plate 500 can be made of welded aluminum profiles or stamped steel, and is used to provide bottom protection for the battery frame 900, thereby improving the stability of the entire battery frame 900.

[0135] Since the guard plate 500 is fixedly connected to the first support plate 400, the guard plate 500 will also be subjected to a tensile force in the first direction. When the tensile force is greater than the static friction between the guard plate 500 and the first support plate 400 and the frame 100, the guard plate 500 will slide relative to the frame 100 and the first support plate 400.

[0136] Based on the above description, the protective plate 500 provided in this embodiment has a plurality of third connecting holes 510 provided on its edge region along the first direction, and the size of each third connecting hole 510 in the first direction is larger than the size of the third connecting hole 510 in the second direction. For example, the third connecting hole 510 is also an oblong hole.

[0137] Please refer to Figures 13 to 15 The third fastener 520 passes through the third connecting hole 510 located in the edge region of the guard plate 500 and is fixedly connected to the first support plate 400 and the frame 100; wherein the third fastener 520 is slidable in the third connecting hole 510.

[0138] In this way, the third fastener 520 can slide within the third connection hole 510, which can absorb the expansion force generated by the battery pack 800, thereby preventing deformation or even breakage at the connection position between the guard plate 500 and the first support plate 400 and the frame 100, and improving the stability of the battery frame 900.

[0139] The third fixing member 520 has the same structure as the first fixing member 340. That is to say, the fixing rod of the third fixing member 520 also has a stepped surface, which can ensure that the distance between the stepped surface and the frame 100 is constant. The locking force between the guard plate 500 and the frame 100 is provided by the spring washer, which ensures that it is fixed in the direction perpendicular to the frame 100 (i.e., the third direction) without being too large and completely locking up, causing it to be unable to slide.

[0140] In addition, the third connection hole 510 is designed as an elongated oval hole, which will not block the hole after the battery pack 800 deforms under the action of expansion force, and can still be disassembled and replaced normally.

[0141] It should be understood that the central region of the guard plate 500 can also be connected to the first support plate 400. For example, a plurality of third connecting holes 510 are provided in the central region along the first direction on the guard plate 500. That is, the third connecting holes 510 are not only provided in the edge region of the guard plate 500, but can also be provided in the central region of the guard plate 500.

[0142] The battery frame 900 also includes a fourth fastener 530, which passes through a third connection hole 510 located in the middle area of ​​the protective plate 500 and is fixedly connected to the first support plate 400.

[0143] Among them, a second fixing washer 560 and a second elastic washer 570 are provided between the head of the fourth fixing member 530 and the first support plate 400.

[0144] It should be noted that the second fixing washer and the first fixing washer 345 have the same structure and function, and the second elastic washer and the first elastic washer have the same structure and function. This embodiment will not elaborate further here.

[0145] Please refer to Figure 11 and Figure 12 In one possible implementation, a connecting post 430 is provided on the side of the first support plate 400 facing the guard plate 500, and the connecting post 430 has a second threaded hole.

[0146] The third connecting hole 510 located in the middle area of ​​the guard plate 500 is used for the connecting post 430 to pass through; the fourth fastener 530 passes through the guard plate 500 and is screwed into the second threaded hole to realize the connection between the first support plate 400 and the guard plate 500.

[0147] The connecting post 430 is located in the third connecting hole 510. It can slide within the third connecting hole 510 using the fourth fixing member 530 and the connecting post 430. This can absorb the expansion force generated by the battery pack 800, thereby preventing deformation or even breakage at the connection point between the guard plate 500 and the first support plate 400 and the frame 100, and improving the stability of the battery frame 900.

[0148] Furthermore, the distance between the connecting post 430 and the first support plate 400 is a fixed value. Therefore, the locking force between the guard plate 500 and the frame 100 can be provided by the spring washer, ensuring that the direction perpendicular to the frame 100 (i.e., the third direction) is fixed, while not being too large to completely lock and prevent slippage.

[0149] Please refer to Figure 9 and Figure 10 In one possible implementation, the guard plate 500 further includes a plurality of protrusions 540, which are arranged at intervals along the circumference of the guard plate 500; a clearance area 550 is formed between any adjacent protrusions 540.

[0150] The frame 100 typically requires lifting lugs or other lifting components; therefore, the guard plate 500 needs a corresponding clearance area 550. This clearance area 550 can be used to avoid interference between the guard plate 500 and the lifting lugs or other lifting components, ensuring smooth lifting operations. Furthermore, by optimizing the structural design and manufacturing process, the protrusion 540 and the clearance area 550 can reduce material waste and lower manufacturing costs.

[0151] It should be noted that the third connecting hole 510 located in the edge area of ​​the guard plate 500 can be set on the protrusion 540, thus saving space in the guard plate 500.

[0152] In one possible implementation, a heat exchanger 700 is provided between the first support plate 400 and the protective plate 500, and the heat exchanger 700 is adapted to exchange heat with the battery pack 800. In this way, by exchanging heat with the battery pack 800 through the heat exchanger 700, the heat generated by the battery pack 800 during operation can be quickly conducted and dissipated, avoiding performance degradation or damage to the battery pack 800 due to excessive temperature.

[0153] The structure of the heat exchanger 700 is a conventional structure. For example, the heat exchanger 700 can be a conventional liquid cooling plate, that is, the heat exchanger 700 includes a flow channel plate and a heat exchange plate stacked on top of each other.

[0154] It should be understood that, given that the heat exchanger 700 is located between the first support plate 400 and the guard plate 500, when the connecting post 430 passes through the third connecting hole 510, the distance between the connecting post 430 and the first support plate 400 is a fixed value. This also allows the locking force between the guard plate 500 and the heat exchanger 700 to be provided by the spring washer, reducing damage to the heat exchanger 700 and thus improving the service life of the heat exchanger 700.

[0155] Please continue to refer to this. Figure 1 A thermally conductive adhesive layer 710 is provided between the first support plate 400 and the heat exchanger 700. The heat exchanger 700 is bonded to the side of the first support plate 400 facing the guard plate 500 using the thermally conductive adhesive layer 710.

[0156] In this way, the thermally conductive adhesive layer 710 can not only connect the heat exchanger 700 and the first support plate 400, but also has a certain thermal conductivity, which can transfer the heat generated by the battery pack 800 to the heat exchanger 700, thereby improving the heat exchange capacity of the heat exchanger 700.

[0157] An insulation layer 720 is provided between the heat exchanger 700 and the protective plate 500. The insulation layer 720 is made of foamed material. In low-temperature environments, the insulation layer 720 prevents heat loss from the battery pack 800 through the protective plate 500, ensuring that the battery pack 800 operates within a suitable temperature range. Furthermore, the foamed material has good elasticity and cushioning properties, effectively reducing the impact of external vibrations and shocks on the battery pack 800 and improving the shock resistance of the battery frame.

[0158] In one possible implementation, the battery frame 900 further includes a second support plate 600. The second support plate 600 is disposed opposite to the first support plate 400 in a third-order orientation and is fixedly connected to the frame 100.

[0159] The second support plate 600 serves as the top cover of the battery frame 900. Thus, the first support plate 400, the frame 100, and the second support plate 600 together form the battery frame 900 to support the battery pack, ensuring the stability and safety of the battery pack 800.

[0160] It should be noted that, in addition to connecting with the top surface of the frame 100, the second support plate 600 can also have other options.

[0161] The second support plate 600 includes a second flange 610, which covers the outer surface of the frame 100 and is fixedly connected to the frame 100. In this way, the second support plate 600 has a fully enclosed or semi-enclosed structure, which can seal the receiving cavity 130 and effectively prevent dust, moisture or other foreign objects from entering the receiving cavity 130, thus protecting the battery pack 800 from the influence of the external environment.

[0162] As for the second flange 610 extending circumferentially along the second support plate 600, there are other options, which can be freely set according to the actual situation.

[0163] For example, the second flange portion 610 is provided on at least both sides of the second support plate 600 in the first direction. In this way, the second flange portion 610 can be connected to the two second support beams 120. Thus, the second flange portion 610 is located in the first direction to better absorb the expansion force generated by the battery pack 800 and improve the stability of the frame 100.

[0164] And / or, the second flange 610 is integrally formed with the second support plate 600. The integrally formed structure can improve the structural strength of the second support plate 600, effectively avoid stress concentration in the second support plate 600, and improve the deformation resistance and load-bearing capacity of the second support plate 600.

[0165] It is important to understand that the second support plate 600 also needs to be connected to the battery pack 800. For example, the second support plate 600 can be connected to the battery pack 800 through an adhesive layer, which simplifies the connection method between the second support plate 600 and the battery pack 800.

[0166] Please continue to refer to this. Figure 1 This application also provides a battery device 1000 for storing electrical energy. The battery device 1000 includes a battery pack 800 and a battery frame 900 as described in any of the above embodiments. The battery pack 800 is disposed within a receiving cavity 130 of the battery frame 900 and located on at least one side of the connecting beam 200. In some embodiments, the battery pack 800 may be disposed on both sides of the connecting beam 200 in a second direction. In other embodiments, in the second direction, the battery pack 800 is disposed on one side of the connecting beam 200, and a power distribution assembly is disposed on the other side of the connecting beam 200.

[0167] Since the battery device includes the battery frame 900 described in any of the above embodiments, the battery device has all the structure and beneficial effects of the battery frame 900, and will not be described in detail here.

[0168] This application also provides an electrical device, including an electrical device and a battery device as described in the second aspect, wherein the battery device is electrically connected to the electrical device and provides electrical energy to the electrical device.

[0169] The electrical equipment in this embodiment can be a vehicle, such as a new energy vehicle, which can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle. Correspondingly, the electrical device can be the vehicle's drive mechanism or its control system. Furthermore, the electrical equipment can also be an energy storage power station, an aircraft, a computer, a ferry, etc.

[0170] Since the electrical device in this embodiment includes the battery described in any of the above embodiments, the electrical device includes the battery structure and beneficial effects, which will not be described in detail here.

[0171] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0172] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0173] 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. A battery frame (900), characterized in that, include: A frame (100) defines a receiving cavity (130) for accommodating a battery pack (800); A connecting beam (200) is disposed within the receiving cavity (130) and extends along a first direction; the connecting beam (200) is movably connected to the frame (100) via a movable connecting structure (300) so that the frame (100) can deform in the first direction.

2. The battery frame (900) according to claim 1, characterized in that, The movable connection structure (300) includes a sliding part (310) and a connecting part (320); the connecting beam (200) is slidably connected to the sliding part (310); the connecting part (320) is fixedly connected to the frame (100).

3. The battery frame (900) according to claim 2, characterized in that, The movable connection structure (300) includes a first connecting plate (330) having a first connecting hole, the size of the first connecting hole in the first direction being larger than the size of the first connecting hole in a third direction, the third direction being the height direction of the frame (100) and intersecting with the first direction; The first connecting hole constitutes the sliding part (310).

4. The battery frame (900) according to claim 3, characterized in that, The connecting beam (200) is slidably mounted in the first connecting hole via the first fastener (340).

5. The battery frame (900) according to claim 3, characterized in that, The first connecting hole is an oblong hole.

6. The battery frame (900) according to claim 4, characterized in that, The first fixing member (340) includes a fixing rod portion, which includes a first fixing rod portion (341) and a second fixing rod portion (342) connected to each other. The first fixing rod portion (341) is disposed in the first connecting hole, and the diameter of the first fixing rod portion (341) is larger than the diameter of the second fixing rod portion (342). The second fixing rod portion (342) is connected to the connecting beam (200).

7. The battery frame (900) according to claim 6, characterized in that, The connecting beam (200) is provided with a first threaded hole (210), and the second fixing rod (342) is formed with an external thread; The second fixing rod (342) is threaded into the first threaded hole (210).

8. The battery frame (900) according to claim 6, characterized in that, The first fixing member (340) also includes a head (343), a first elastic washer (344), and a first fixing washer (345) connected to the first fixing rod (341); The first elastic washer (344) and the first fixing washer (345) are sequentially sleeved on the first fixing rod (341), and the first fixing washer (345) is located between the first elastic washer (344) and the head (343), and the first elastic washer (344) abuts against the first connecting plate (330).

9. The battery frame (900) according to claim 3, characterized in that, The movable connection structure (300) further includes a second connecting plate (350), which is connected to the first connecting plate (330) and has a preset angle with the first connecting plate (330); The second connecting plate (350) constitutes the connecting part (320).

10. The battery frame (900) according to claim 9, characterized in that, The battery frame also includes a second fastener (360), and a second connecting hole is provided on the second connecting plate (350); the second connecting hole forms a connecting part (320), and the second fastener (360) is fixedly connected to the frame (100) after passing through the second connecting hole; Alternatively, the second connecting plate (350) and the frame (100) are integrally formed.

11. The battery frame (900) according to claim 10, characterized in that, Along the second direction, both sides of the connecting beam (200) are slidably connected to the frame (100) through the movable connecting structure (300); The second direction and the third direction intersect the first direction in pairs.

12. The battery frame (900) according to claim 11, characterized in that, Both the first connecting hole and the second connecting hole include multiple holes; the multiple first connecting holes are arranged at intervals along the third direction on the first connecting plate (330), and the multiple second connecting holes are arranged at intervals along the third direction on the second connecting plate (350).

13. The battery frame (900) according to claim 11, characterized in that, The connecting beams (200) include a plurality of beams, which are arranged at intervals along the second direction.

14. The battery frame (900) according to any one of claims 1-13, characterized in that, The battery frame (900) further includes a first support plate (400); along a third direction, the first support plate (400) is disposed on one side of the frame (100) and fixedly connected to the frame (100); Wherein, the third direction is the height direction of the border (100).

15. The battery frame (900) according to claim 14, characterized in that, The first support plate (400) includes a first flange (410), which covers the outer surface of the frame (100) and is fixedly connected to the frame (100).

16. The battery frame (900) according to claim 15, characterized in that, The first flange (410) is provided on at least both sides of the first support plate (400) in the first direction; And / or, the first flange (410) is integrally formed with the first support plate (400).

17. The battery frame (900) according to claim 14, characterized in that, An adhesive layer (420) is also provided on the area of ​​the first support plate (400) opposite to the receiving cavity (130); The adhesive layer (420) is adapted to be connected to the battery pack (800).

18. The battery frame (900) according to claim 14, characterized in that, The battery frame (900) also includes a protective plate (500), which is disposed on the side of the first support plate (400) away from the frame (100) and is fixedly connected to the frame (100) at least.

19. The battery frame (900) according to claim 18, characterized in that, The battery frame (900) also includes a third fastener (520); The guard plate (500) is provided with a plurality of third connecting holes (510) along the edge region of the first direction, and the size of the third connecting hole (510) in the first direction is larger than the size of the third connecting hole (510) in the second direction; The third fastener (520) passes through the third connecting hole (510) and is fixedly connected to the first support plate and the frame (100); wherein the third fastener (520) is also capable of sliding in the third connecting hole (510).

20. The battery frame (900) according to claim 19, characterized in that, The protective plate (500) has a plurality of third connection holes (510) in the middle area along the first direction. The battery frame (900) also includes a fourth fixing member (530). The fourth fixing member (530) passes through the third connection holes (510) in the middle area of ​​the protective plate (500) and is fixedly connected to the first support plate (400). A second fixing washer (560) and a second elastic washer (570) are provided between the head of the fourth fixing member (530) and the first support plate.

21. The battery frame (900) according to claim 20, characterized in that, The first support plate (400) is provided with a connecting post (430) on the side facing the guard plate (500), and the connecting post (430) has a second threaded hole; The third connecting hole (510) located in the middle region of the guard plate (500) is used for the connecting post (430) to pass through; The fourth fastener (530) passes through the guard plate (500) and is screwed into the second threaded hole.

22. The battery frame (900) according to any one of claims 18-21, characterized in that, The guard plate (500) also includes a plurality of protrusions (540), which are arranged at intervals along the circumference of the guard plate (500); a clearance area (550) is formed between any adjacent protrusions (540).

23. The battery frame (900) according to any one of claims 18-21, characterized in that, A heat exchanger (700) is provided between the first support plate (400) and the protective plate (500), and the heat exchanger (700) is adapted to exchange heat with the battery pack (800).

24. The battery frame (900) according to claim 23, characterized in that, A thermally conductive adhesive layer (710) is provided between the first support plate (400) and the heat exchanger (700).

25. The battery frame (900) according to claim 24, characterized in that, An insulation layer (720) is provided between the heat exchanger (700) and the protective plate (500).

26. The battery frame (900) according to any one of claims 15-21, characterized in that, The battery frame (900) further includes a second support plate (600); the second support plate (600) and the first support plate (400) are disposed opposite each other in the third direction and are fixedly connected to the frame (100).

27. The battery frame (900) according to claim 26, characterized in that, The second support plate (600) includes a second flange (610), which covers the outer surface of the frame (100) and is fixedly connected to the frame (100).

28. The battery frame (900) according to claim 27, characterized in that, The second flange (610) is provided at least on both sides of the second support plate (600) in the first direction; And / or, the second flange (610) is integrally formed with the second support plate (600).

29. A battery device, characterized in that, Includes a battery pack (800) and a battery frame (900) as described in any one of claims 1-28; the battery pack (800) is disposed within a receiving cavity (130) of the battery frame (900) and located on at least one side of the connecting beam (200).

30. An electrical appliance, characterized in that, Includes an electrical device and the battery device as described in claim 29; The battery device is used to provide electrical energy to the electrical device.

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