Battery frame, battery pack and vehicle

Abstract

The utility model discloses a battery frame, battery pack and vehicle, battery frame includes functional beam, functional beam includes first side plate, second side plate and first reinforcing rib, first side plate and second side plate are arranged along the width direction of functional beam at interval, first reinforcing rib is connected between first side plate and second side plate, and second reinforcing rib is connected between first side plate and second side plate. The first reinforcing rib is spaced from the upper end and the lower end of each of the first side plate and the second side plate in the height direction, and the first side plate, the second side plate and the first reinforcing rib jointly define a first groove with an upward opening and a second groove with a downward opening. The battery frame provided by the utility model has the advantages of light weight, high strength and good cell expansion resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a battery frame, a battery pack and a vehicle. Background Art

[0002] In the related art, when die-casting functional beams such as expansion beams and reinforcement beams on the frame, only the die is drawn from bottom to top to form a groove with the opening facing upward, and the reinforcement ribs forming the bottom surface of the groove are usually located at the bottom of the functional beams such as the expansion beam and reinforcement beam. At this time, the depth of the groove is relatively large, which can easily cause the clamping force of the mold forming the groove to be too large, and there is a risk of demolding. At the same time, because the groove depth is too large and there is a draft angle of the casting, the wall thickness of the side panel of the functional beam is significantly different, especially the thickness of the side panel adjacent to the reinforcement rib will become very thick as the groove depth increases. These positions will easily produce casting defects such as air holes and shrinkage holes, which will affect the overall strength of the frame. At the same time, the excessive thickness of the root of the reinforcement rib also causes the overall weight of the frame to increase, which does not meet the lightweight requirements of the vehicle. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a battery frame, which has the advantages of light weight, high strength, and good resistance to battery cell expansion.

[0005] The embodiments of the present invention also provide a battery pack and a vehicle.

[0006] The battery frame of an embodiment of the present utility model includes a functional beam, which includes a first side panel, a second side panel and a first reinforcing rib, and the first side panel and the second side panel are arranged at intervals along the width direction of the functional beam; the first reinforcing rib is connected between the first side panel and the second side panel, and the first reinforcing rib is spaced apart from the upper end and the lower end of each of the first side panel and the second side panel in the height direction, and the first side panel, the second side panel and the first reinforcing rib jointly define a first groove opening upward and a second groove opening downward.

[0007] According to the battery frame of the embodiment of the present invention, the first reinforcing rib in the functional beam is connected between the first side plate and the second side plate, and is spaced apart from the upper and lower ends of each of the first side plate and the second side plate in the height direction, thereby forming the first groove and the second groove in the height direction opposite to each other in the battery frame. Compared with the design of the functional beam in the related art in which only one groove is formed in the height direction, the depth of the first groove and the second groove in this embodiment is smaller. Therefore, in the process of die-casting the functional beam, the reliability of drafting from bottom to top to form the first groove and from top to bottom to form the second groove is higher, and the risk of demolding is lower. At the same time, when the draft angle remains unchanged, the smaller the depth of the first groove and the second groove, the smaller the difference in wall thickness of the first side plate and the second side plate formed thereby, the thickness of the portion of the first side plate and the second side plate adjacent to the first reinforcing rib is smaller, and thus the weight of the battery frame is smaller, effectively meeting the lightweight requirements of the vehicle. At the same time, the portion of the first side plate and the second side plate adjacent to the first reinforcing rib will not cause poor cooling uniformity and poor gas discharge due to excessive thickness, thereby effectively avoiding the generation of casting defects such as pores and shrinkage cavities, and the structural strength of the battery frame is higher.

[0008] In some embodiments, the functional beam also includes a second reinforcing rib, which is connected to the lower end of the first side panel and the lower end of the second side panel at both ends of the functional beam in the width direction. Part of the inner wall surface of the first side panel, the upper surface of the second reinforcing rib and part of the inner wall surface of the second side panel are combined to form a third groove opening upward, and each of the first groove and the second groove is arranged with the third groove along the length direction of the functional beam.

[0009] In some embodiments, the thickness of the second reinforcing rib is greater than the thickness of the first reinforcing rib, and a first mounting hole is provided on the second reinforcing rib.

[0010] In some embodiments, the functional beam further comprises a first intermediate plate, the first intermediate plate being disposed between any adjacent first reinforcing ribs and second reinforcing ribs in the length direction of the functional beam, the first intermediate plate separating each of the first slot and the second slot from the third slot;

[0011] And / or, the functional beam further comprises a second middle plate, the second middle plate being disposed in the first groove, the second middle plate connecting the first side plate and the second side plate, and the second middle plate being provided with a second mounting hole;

[0012] And / or, the functional beam further includes a third middle plate, the third middle plate is disposed in the third groove, and the third middle plate connects the first side plate and the second side plate.

[0013] In some embodiments, the functional beam is an expansion beam or a reinforcement beam.

[0014] In some embodiments, the functional beam is an expansion beam, and the battery frame further includes a side beam and a reinforcement beam, and the reinforcement beam is connected between the side beam and the functional beam.

[0015] In some embodiments, the reinforcing beam is a die-cast part and includes a third side plate, a third reinforcing rib and a fourth side plate connected in sequence along the width direction of the reinforcing beam, the third reinforcing rib is spaced apart from the upper end and the lower end of each of the third side plate and the fourth side plate in the height direction, and the third side plate, the fourth side plate and the third reinforcing rib jointly define a fourth groove opening upward and a fifth groove opening downward.

[0016] In some embodiments, the reinforcement beam further includes a fourth reinforcement rib, wherein the fourth reinforcement rib is connected to the lower end of the third side plate and the lower end of the fourth side plate at both ends of the reinforcement beam in the width direction, respectively; the inner wall surface of the third side plate, the upper surface of the fourth reinforcement rib, and the inner wall surface of the fourth side plate enclose a sixth groove with an upward opening, and each of the fourth groove and the fifth groove and the sixth groove are arranged along the length direction of the reinforcement beam;

[0017] The thickness of the fourth reinforcing rib is greater than the thickness of the third reinforcing rib, and a third mounting hole is provided on the fourth reinforcing rib.

[0018] In some embodiments, the reinforcement beam further includes a fourth intermediate plate connected between the third side plate and the fourth side plate, and connected between any adjacent third reinforcement ribs and fourth reinforcement ribs, the fourth intermediate plate separating each of the fourth slot and the fifth slot from the sixth slot;

[0019] And / or, a connecting plate is provided on a side of the third side plate facing away from the fourth side plate, and a fourth mounting hole is provided on the connecting plate.

[0020] The battery pack according to an embodiment of the present invention includes the battery frame as described in any of the above embodiments.

[0021] The technical advantages of the battery pack according to the embodiment of the present invention are the same as the technical advantages of the battery frame of the above embodiment, and will not be repeated here.

[0022] A vehicle according to an embodiment of the present invention includes a battery pack as described in the above embodiment.

[0023] The technical advantages of the vehicle according to the embodiment of the present invention are the same as the technical advantages of the battery pack in the above embodiment, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a partially enlarged view of the frame in the related art, in which the expansion beam is in a half-section state.

[0025] Figure 2 It is a top view of a frame according to an embodiment of the present utility model.

[0026] Figure 3 It is a bottom view of the frame according to an embodiment of the utility model.

[0027] Figure 4 It is a front view of a frame according to an embodiment of the utility model, wherein the expansion beam is in a half-section state.

[0028] Figure 5 It is an axonometric view of a frame according to an embodiment of the present utility model.

[0029] Figure 6 It is a partially enlarged view of the frame according to an embodiment of the utility model, wherein the expansion beam is in a half-section state.

[0030] Reference numerals:

[0031] 1. Side beam; 2. Functional beam; 21. First side panel; 22. Second side panel; 23. First reinforcing rib; 231. First groove; 232. Second groove; 24. Second reinforcing rib; 241. First mounting hole; 242. Third groove; 25. First middle panel; 26. Second middle panel; 261. Second mounting hole; 27. Third middle panel; 3. Reinforcing beam; 31. Third side panel; 32. Fourth side panel; 33. Connecting plate; 331. Fourth mounting hole. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0033] The following combination Figures 1-6 A frame according to an embodiment of the present invention is described.

[0034] The battery frame of the embodiment of the present utility model includes a functional beam 2, which includes a first side panel 21, a second side panel 22, and a first reinforcing rib 23. The first side panel 21 and the second side panel 22 are spaced apart along the width direction of the functional beam 2. The first reinforcing rib 23 is connected between the first side panel 21 and the second side panel 22. The first reinforcing rib 23 is spaced apart from the upper end and the lower end of each of the first side panel 21 and the second side panel 22 in the height direction. The first side panel 21, the second side panel 22, and the first reinforcing rib 23 jointly define a first slot 231 opening upward and a second slot 232 opening downward.

[0035] According to the battery frame of the embodiment of the present invention, the first reinforcing rib 23 in the functional beam 2 is connected between the first side plate 21 and the second side plate 22, and is spaced apart from the upper and lower ends of each of the first side plate 21 and the second side plate 22 in the height direction, thereby forming a first groove 231 and a second groove 232 in the height direction opposite to each other in the battery frame. Compared with the design of the functional beam 2 in the related art in which only one groove is formed in the height direction, the depth of the first groove 231 and the second groove 232 in this embodiment is smaller. Therefore, during the die-casting process of the functional beam 2, the reliability of drafting from bottom to top to form the first groove 231 and from top to bottom to form the second groove 232 is higher, and the risk of demolding failure is lower. At the same time, when the draft angle remains unchanged, the smaller the depth of the first groove 231 and the second groove 232, the smaller the difference in wall thickness of the first side plate 21 and the second side plate 22 formed thereby, the smaller the thickness of the portion of the first side plate 21 and the second side plate 22 adjacent to the first reinforcing rib 23, and the smaller the weight of the battery frame, effectively meeting the lightweight requirements of the vehicle. At the same time, the portions of the first side plate 21 and the second side plate 22 adjacent to the first reinforcing rib 23 will not be too thick, resulting in poor cooling uniformity and poor gas discharge, thereby effectively avoiding the generation of casting defects such as air holes and shrinkage holes, and the structural strength of the battery frame is higher.

[0036] It should be noted that the battery frame is integrally die-cast. The first reinforcing rib 23 is a horizontal plate, and is located at or near the center of the first side plate 21 and the second side plate 22 in the height direction, thereby preventing the depth of one of the first groove 231 and the second groove 232 from being too small and causing the depth of the other to be too large, thereby increasing the risk of demolding failure. For example, Figure 6 As shown, the first reinforcing rib 23 is located at 1 / 3 of the height of the first side plate 21 and the second side plate 22 in the height direction, and / or the first reinforcing rib 23 is located at 2 / 3 of the height of the first side plate 21 and the second side plate 22 in the height direction.

[0037] In some embodiments, as Figure 3 As shown, the functional beam 2 also includes a second reinforcing rib 24, which is respectively connected to the lower end of the first side panel 21 and the lower end of the second side panel 22 at both ends in the width direction of the functional beam 2. Part of the inner wall surface of the first side panel 21, the upper surface of the second reinforcing rib 24, and part of the inner wall surface of the second side panel 22 are enclosed to form a third groove 242 with an upward opening. Each of the first groove 231 and the second groove 232 is arranged with the third groove 24 along the length direction of the functional beam 2.

[0038] In this case, the second reinforcing rib 24 is located in the same position as the reinforcing ribs in the related art, and can perform the same function, such as tightening or confining the wiring harness and electrical components on the battery pack. Furthermore, only a single mold is required to form the second reinforcing rib 24, effectively reducing mold development and production costs.

[0039] Specifically, the lower surface of the second reinforcing rib 24, the lower end surface of the first side panel 21, and the lower end surface of the second side panel 22 are coplanar. The second reinforcing rib 24 is a horizontal plate. On a projection plane perpendicular to the height direction, the projections of the first reinforcing rib 23 and the second reinforcing rib 24 are spaced apart along the length of the functional beam 2. This ensures that the mold corresponding to the first reinforcing rib 23 and the mold corresponding to the second reinforcing rib 24 do not contact each other, further reducing the risk of the molds being dislodged.

[0040] In some embodiments, as Figure 3 、 Figure 5 and Figure 6 As shown, the thickness of the second reinforcing rib 24 is greater than the thickness of the first reinforcing rib 23 , and a first mounting hole 241 is provided on the second reinforcing rib 24 .

[0041] The second reinforcing rib 24 is used to fasten or gather the wiring harness and electrical components on the battery pack through the first mounting hole 241. By setting the thickness of the second reinforcing rib 24 to be greater than the thickness of the first reinforcing rib 23, while ensuring that the functional beam 2 has better restraining strength for the wiring harness and electrical components, the depth of the third groove 24 defined by the second reinforcing rib 24, the first side plate 21 and the second side plate 22 is also relatively smaller, thereby reducing the risk of demolding.

[0042] In some embodiments, as Figure 4 As shown, the functional beam 2 also includes a first intermediate plate 25, which is positioned between any adjacent first and second reinforcing ribs 23, 24 along the length of the functional beam 2. The first intermediate plate 25 separates each of the first and second grooves 231, 232 from the third groove 242. This means that the mold forming the first groove 231 and the mold forming the third groove 242 are separated by the first intermediate plate 25, effectively preventing the two molds from contacting and increasing the risk of mold release failure. Furthermore, the design of the first intermediate plate 25 further enhances the structural strength and resistance to battery cell expansion of the functional beam 2.

[0043] Specifically, the first middle plate 25 is a vertical plate, the lower end surface of the first middle plate 25, the lower end surface of the first side plate 21 and the lower end surface of the second side plate 22 are coplanar, and the upper end surface of the first middle plate 25, the upper end surface of the first side plate 21 and the upper end surface of the second side plate 22 are coplanar.

[0044] In some embodiments, as Figure 4As shown, the functional beam 2 also includes a second intermediate plate 26, which is positioned within the first slot 231 and connects the first side plate 21 to the second side plate 22. The second intermediate plate 26 is provided with a second mounting hole 261. The design of the second intermediate plate 26 provides more mounting locations for wiring harnesses and electrical components, effectively ensuring reliable installation of these components on the battery frame. Furthermore, the design of the second intermediate plate 26 further enhances the structural strength and resistance to battery cell expansion of the functional beam 2.

[0045] Specifically, the first side plate 21 is located on the side of the second side plate 22 facing the side beam 1 , the second middle plate 26 is connected to the first side plate 21 , and the second mounting hole 261 passes through the second middle plate 26 in the height direction.

[0046] In some embodiments, as Figure 4 As shown, the functional beam 2 further includes a third middle plate 27 . The third middle plate 27 is disposed in the third groove 242 . The third middle plate 27 connects the first side plate 21 and the second side plate 22 .

[0047] The third intermediate plate 27 divides the third groove 242 into a plurality of sub-grooves, so that the third groove 242 can be formed by a plurality of molds, thereby ensuring that the contact area between each mold and the functional beam 2 is smaller and the risk of demolding is lowered.

[0048] Specifically, each third slot 242 corresponds to a third intermediate plate 27 , and the third intermediate plate 27 is located at the center of the corresponding third slot 242 in the length direction of the functional beam 2 .

[0049] In some embodiments, as Figure 2 and Figure 3 As shown, there are multiple first reinforcing ribs 23 and multiple second reinforcing ribs 24 , and the multiple first reinforcing ribs 23 and the multiple second reinforcing ribs 24 are alternately arranged along the length direction of the functional beam 2 .

[0050] That is, the first mounting holes 241 are arranged at intervals in the length direction of the functional beam 2. On this basis, the area between any two adjacent first mounting holes 241 has a first reinforcing rib 23, thereby effectively increasing the total length of the first reinforcing rib 23 to further reduce the weight of the battery frame and better meet the lightweight requirements of the vehicle.

[0051] In some embodiments, the functional beam 2 is an expansion beam or a reinforcement beam 3 .

[0052] That is, the functional beam 2 can be an expansion beam for direct contact with the battery cell module. At this time, compared with the design in the related art where the first reinforcing rib 23 is located at the upper or lower end of the first side plate 21 and the second side plate 22, the first reinforcing rib 23 of this embodiment is closer to the center position of the battery cell with the largest expansion deformation in the height direction. Therefore, under the support of the first reinforcing rib 23, the functional beam 2 has better resistance to battery cell expansion.

[0053] Alternatively, the functional beam 2 may also be a reinforcing beam 3 connecting the expansion beam and the side beam 1, thereby also having the effect of reducing the weight of the battery frame and ensuring the strength of the battery frame.

[0054] In some embodiments, the functional beam 2 is an expansion beam, and the battery frame further includes a side beam 1 and a reinforcement beam 3, which is connected between the side beam 1 and the functional beam 2. The ends of the side beam 1 are respectively connected to the ends of the functional beam 2. In this case, the design of the reinforcement beam 3 further improves the connection strength between the side beam 1 and the functional beam 2.

[0055] The reinforcing beam 3 is a die-cast part and includes a third side plate 31, a third reinforcing rib and a fourth side plate 32 connected in sequence along the width direction of the reinforcing beam 3. The third reinforcing rib is spaced apart from the upper end and the lower end of each of the third side plate 31 and the fourth side plate 32 in the height direction. The third side plate 31, the fourth side plate 32 and the third reinforcing rib jointly define a fourth slot opening upward and a fifth slot opening downward.

[0056] The third reinforcing rib has the same structure as the first reinforcing rib 23 of the functional beam 2. This effectively reduces the depth of the fourth and fifth grooves, given the larger height dimensions of the third and fourth side panels 31 and 32, thereby minimizing the risk of mold release failure. This also reduces the thickness variation of the third reinforcing ribs, including the thickness at their base, further meeting vehicle lightweighting requirements.

[0057] For example, the third reinforcing rib is a horizontal plate, and the third reinforcing rib is located at or adjacent to the center position of the third side plate 31 and the fourth side plate 32 in the height direction, thereby avoiding the depth of one of the fourth groove and the fifth groove being too small, resulting in the depth of the other being too large, thereby increasing the risk of demolding failure.

[0058] In some embodiments, the reinforcement beam 3 further includes a fourth reinforcement rib, which is aligned with the third reinforcement rib along the length of the reinforcement beam 3. The fourth reinforcement rib is connected to the lower ends of the third side panel 31 and the lower ends of the fourth side panel 32 at both ends of the width of the reinforcement beam 3. The inner wall of the third side panel 31, the upper surface of the fourth reinforcement rib, and the inner wall of the fourth side panel 32 together form a sixth groove with an upward opening. Each of the fourth and fifth grooves is aligned with the sixth groove along the length of the reinforcement beam 3. The fourth reinforcement rib is thicker than the third reinforcement rib and is provided with a third mounting hole.

[0059] The fourth reinforcing rib is used to fasten or gather the wiring harness and electrical components on the battery pack through the third mounting hole. By setting the thickness of the fourth reinforcing rib to be greater than the thickness of the third reinforcing rib, while ensuring that the reinforcing beam 3 has better restraining strength for the wiring harness and electrical components, the depth of the sixth groove jointly defined by the fourth reinforcing rib, the third side plate 31 and the fourth side plate 32 is also relatively smaller, thereby reducing the risk of demolding.

[0060] For example, the lower surface of the fourth reinforcing rib, the lower end surface of the third side plate 31 and the lower end surface of the fourth side plate 32 are coplanar.

[0061] In some embodiments, the reinforcing beam 3 further includes a fourth intermediate plate, which is connected between the third side plate 31 and the fourth side plate 32, and between any adjacent third reinforcing ribs and fourth reinforcing ribs, and separates each of the fourth slot and the fifth slot from the sixth slot.

[0062] This means the mold forming the fourth slot and the mold forming the sixth slot are separated by the fourth intermediate plate, effectively preventing the two molds from contacting each other and increasing the risk of mold release. Furthermore, the design of the fourth intermediate plate further enhances the structural strength of the reinforcing beam 3 and its resistance to cell expansion.

[0063] Specifically, the fourth middle plate is a vertical plate, the lower end surface of the fourth middle plate, the lower end surface of the third side plate 31 and the lower end surface of the fourth side plate 32 are coplanar, and the upper end surface of the fourth middle plate, the upper end surface of the third side plate 31 and the upper end surface of the fourth side plate 32 are coplanar.

[0064] And / or, a connecting plate 33 is provided on a side of the third side plate 31 facing away from the fourth side plate 32 , and a fourth mounting hole 331 is provided on the connecting plate 33 .

[0065] Therefore, there is no need to increase the thickness of the reinforcing beam 3. More installation positions for restraining wiring harnesses and electrical components can be increased through the fourth installation holes 331 on the connecting plate 33, effectively reducing the total weight of the reinforcing beam 3 and further meeting the lightweight requirements of the vehicle.

[0066] The battery pack according to an embodiment of the present invention includes a battery frame as described in any of the above embodiments.

[0067] The technical advantages of the battery pack according to the embodiment of the present invention are the same as the technical advantages of the battery frame of the above embodiment, and will not be repeated here.

[0068] A vehicle according to an embodiment of the present invention includes a battery pack as described in the above embodiment.

[0069] The technical advantages of the vehicle according to the embodiment of the present invention are the same as the technical advantages of the battery pack in the above embodiment, and will not be repeated here.

[0070] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0072] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0073] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0074] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0075] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. A battery frame, characterized in that: The invention comprises a functional beam, wherein the functional beam comprises: a first side plate and a second side plate, wherein the first side plate and the second side plate are arranged at intervals along the width direction of the functional beam; A first reinforcing rib is connected between the first side panel and the second side panel, the first reinforcing rib is spaced apart from the upper end and the lower end of each of the first side panel and the second side panel in the height direction, and the first side panel, the second side panel and the first reinforcing rib jointly define a first slot opening upward and a second slot opening downward.

2. The battery frame according to claim 1, characterized in that: The functional beam also includes a second reinforcing rib, which is respectively connected to the lower end of the first side panel and the lower end of the second side panel at both ends of the functional beam in the width direction. Part of the inner wall surface of the first side panel, the upper surface of the second reinforcing rib and part of the inner wall surface of the second side panel form a third groove opening upward. Each of the first groove and the second groove is arranged with the third groove along the length direction of the functional beam.

3. The battery frame according to claim 2, characterized in that: The thickness of the second reinforcing rib is greater than that of the first reinforcing rib, and a first mounting hole is provided on the second reinforcing rib.

4. The battery frame according to claim 2, characterized in that: The functional beam further includes a first intermediate plate, the first intermediate plate being disposed between any adjacent first reinforcing ribs and second reinforcing ribs in the longitudinal direction of the functional beam, the first intermediate plate separating each of the first slot and the second slot from the third slot; And / or, the functional beam further comprises a second middle plate, the second middle plate being disposed in the first groove, the second middle plate connecting the first side plate and the second side plate, and the second middle plate being provided with a second mounting hole; And / or, the functional beam further includes a third middle plate, the third middle plate is disposed in the third groove, and the third middle plate connects the first side plate and the second side plate.

5. The battery frame according to any one of claims 1 to 4, characterized in that: The functional beam is an expansion beam or a reinforcement beam.

6. The battery frame according to claim 5, characterized in that: The functional beam is an expansion beam, and the battery frame further includes a side beam and a reinforcement beam, wherein the reinforcement beam is connected between the side beam and the functional beam.

7. The battery frame according to claim 6, characterized in that: The reinforcing beam is a die-cast part and includes a third side plate, a third reinforcing rib and a fourth side plate connected in sequence along the width direction of the reinforcing beam, the third reinforcing rib is spaced apart from the upper end and the lower end of each of the third side plate and the fourth side plate in the height direction, and the third side plate, the fourth side plate and the third reinforcing rib jointly define a fourth groove opening upward and a fifth groove opening downward.

8. The battery frame according to claim 7, characterized in that: The reinforcement beam further includes a fourth reinforcement rib, wherein the fourth reinforcement rib is connected to the lower end of the third side plate and the lower end of the fourth side plate at both ends of the reinforcement beam in the width direction, respectively; the inner wall surface of the third side plate, the upper surface of the fourth reinforcement rib and the inner wall surface of the fourth side plate enclose a sixth groove with an upward opening, and each of the fourth groove and the fifth groove and the sixth groove are arranged along the length direction of the reinforcement beam; The thickness of the fourth reinforcing rib is greater than the thickness of the third reinforcing rib, and a third mounting hole is provided on the fourth reinforcing rib.

9. The battery frame according to claim 8, characterized in that: The reinforcing beam further includes a fourth intermediate plate connected between the third side plate and the fourth side plate, and connected between any adjacent third reinforcing ribs and fourth reinforcing ribs, the fourth intermediate plate separating each of the fourth slot and the fifth slot from the sixth slot; And / or, a connecting plate is provided on a side of the third side plate facing away from the fourth side plate, and a fourth mounting hole is provided on the connecting plate.

10. A battery pack, characterized in that: Comprising a battery frame according to any one of claims 1-9.

11. A vehicle, characterized in that: Comprising the battery pack according to claim 10.

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