Battery pack side portion mounting structure assembly and vehicle
Patent Information
- Application Number
- CN202510304370.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-09-15
Smart Images
Figure CN122747589A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of battery pack mounting architecture technology, specifically relating to a battery pack side mounting structure assembly and a vehicle. Background Technology
[0002] The battery pack assembly is connected to the vehicle sill beam via a side mounting structure. When the vehicle's side impacts a pole, the sill beam collapses and deforms upon impact, compressing the battery modules. Therefore, the sill beam is a crucial stress-bearing area in side pole impacts and directly affects the battery pack's safety. Existing battery pack side mounting structures suffer from insufficient strength. In a side pole impact, the side mounting structure is prone to severe collapse and deformation, leading to significant stress on the internal battery modules. This poses safety risks such as battery leakage and spontaneous combustion after a collision, seriously affecting vehicle safety. Summary of the Invention
[0003] This invention provides a battery pack side mounting structure assembly and a vehicle, aiming to solve the problem in the prior art where side impacts with poles can easily cause severe collapse and deformation of the battery side mounting structure.
[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:
[0005] In a first aspect, embodiments of the present invention provide a battery pack side mounting structure assembly, comprising:
[0006] The vehicle door sill beam has an energy-absorbing cavity inside;
[0007] A battery pack mounting bracket is spaced apart on the inner side of the vehicle sill beam to form a battery module accommodating space; a mounting ear is formed on the lower part of the outer side of the battery pack mounting bracket, the mounting ear is a hollow component and is connected to the lower side of the vehicle sill beam;
[0008] The floor is located above the battery pack mounting bracket and is fitted and connected to the inner side of the vehicle body sill beam;
[0009] The vehicle sill beam, the battery pack mounting bracket, and the floor together form an energy-absorbing cavity.
[0010] Existing battery pack side mounting structures primarily focus on improving the connection strength and overall integrity with the sill beam. This results in the impact force on the sill beam being directly transmitted to the side mounting structure of the battery pack during a side pole collision. The side mounting structure bears a significant impact force and is prone to severe crumpling deformation. To address this issue, the solution presented in this application, compared to existing technologies, ensures that the vehicle sill beam contacts the impacting object first during a side collision. If the impact force is small, only the vehicle sill beam deforms, while the mounting ears remain undeformed, preventing compression of the battery modules within the battery pack.
[0011] If the side impact force is large, the sill beam will crumple and deform after the collision. After deformation to a certain extent, the impacting object and the sill beam will further compress the mounting ears. Since the mounting ears are hollow structures, they have a certain crumple energy absorption capacity, dissipating the impact energy to a certain extent and achieving multi-stage crumple energy absorption. At the same time, since the mounting ears and the sill beam are stacked vertically, the mounting ears can disperse the force on the sill beam to a certain extent after contacting the impacting object, reducing the degree of deformation of the sill beam. This further reduces the degree of compression of the mounting ears by the deformed sill beam, and also reduces the degree of deformation of the mounting ears. Based on this, the sill beam, battery pack mounting bracket, and floor enclose a non-contact energy absorption cavity, creating an area between the sill beam and the battery pack. This provides space for the deformation of the sill beam to avoid direct compression of the side impact energy, preventing the deformation of the sill beam from directly compressing the battery pack, thus providing soft protection for the individual battery modules in the battery pack. In addition, the impact force on the vehicle sill beam is decomposed and transmitted through the sill beam. After the energy absorption chamber is fully absorbed, part of the force is transmitted to the other side of the vehicle through the floor and the top structure of the battery pack mounting bracket. Another part of the force is transmitted to the bottom of the battery pack mounting bracket through the mounting ears, and then to the mounting ears on the other side through the bottom structure of the battery pack mounting bracket, and finally to the other side of the vehicle. This achieves effective decomposition and transmission of impact energy and improves the ability to resist impact deformation.
[0012] Overall, this application organically combines the solutions of setting hollow mounting ears, increasing energy absorption cavities, and optimizing force transmission paths to improve the ability of the battery pack side mounting structure assembly to resist side pillar impacts, effectively improving the problem of severe collapse and deformation of the battery pack side mounting structure assembly after a side pillar impact.
[0013] In conjunction with the first aspect, in one possible implementation, the mounting ear has multiple closed support cavities distributed along the inner and outer directions, wherein the lower edge of at least one of the support cavities extends to the bottom of the battery module accommodating space. The mounting ear is formed by stacking multiple cavities inside and outside, increasing the complexity of the internal structure of the mounting ear, enabling it to withstand greater impact and compression forces, improving its structural strength and impact resistance, and enhancing its structural stability, thus effectively improving the protection of the battery module. Furthermore, it effectively reduces the amount of material used in the mounting ear, enabling better lightweight design. Moreover, the protective cavity structure can more comprehensively cover the main body of the battery pack, thereby providing more comprehensive protection and effectively resisting impact damage from side impacts.
[0014] In some embodiments, the battery pack mounting bracket includes:
[0015] The outer panel of the battery pack is a U-shaped panel that opens inward, and the distance between the upper and lower wing plates on the outer panel of the battery pack gradually increases from the outside to the inside.
[0016] The inner panel of the battery pack seals the inner opening of the outer panel of the battery pack and forms the housing space for the battery module.
[0017] The battery pack outer panel reinforcement plate is supported and connected between the upper and lower wing plates of the battery pack outer panel, and divides the space formed by the battery pack outer panel and the battery pack inner panel into multiple bracket cavities. Among them, the outermost bracket cavity is fitted with a first mounting sleeve along the vertical direction, and the first mounting sleeve is connected to the vehicle body sill beam by fasteners.
[0018] The battery pack outer panel, the battery pack inner panel, and the battery pack outer panel reinforcing plate cooperate to form the mounting ear.
[0019] The battery pack mounting bracket has a simple and compact overall structure, greatly reducing redundant components, improving assembly efficiency, and facilitating lightweight design. The screwing and compressive forces generated during fastener assembly are borne by the first mounting sleeve, effectively preventing deformation of the battery pack outer panel and making the fastener tightening effect more reliable. The structure formed by the battery pack outer panel, battery pack inner panel, and battery pack outer panel reinforcing plate has strong integrity, fewer connection gaps, and higher structural strength.
[0020] In some embodiments, the lower wing plate of the battery pack outer panel, the outer connecting flange of the battery pack outer panel reinforcing plate, and the battery pack inner panel are sequentially stacked from bottom to top. A battery pack outer panel reinforcing plate is also attached to the lower side of the lower wing plate of the battery pack outer panel. The lower connection areas of the battery pack outer panel, battery pack outer panel reinforcing plate, and battery pack inner panel are connected in a multi-layer stacked manner, resulting in a more concentrated connection area and higher structural strength. This helps optimize the overall integrity of the connection between the battery pack outer panel, battery pack inner panel, and battery pack outer panel reinforcing plate. Based on this, a battery pack outer panel reinforcing plate is further added at the stacked connection location to expand the load-bearing area of the multi-layer sheet metal overlap.
[0021] In some embodiments, the battery pack mounting bracket further includes an inner battery pack reinforcing plate, which is fitted and connected to the inner side of the inner battery pack panel, forming the bracket cavity. The outer battery pack panel, the inner battery pack panel, the outer battery pack reinforcing plate, and the inner battery pack reinforcing plate cooperate to form the mounting ear. The inner battery pack reinforcing plate strengthens the inner side of the inner battery pack panel, improving the structural strength of the bottom of the battery module accommodating space. Simultaneously, the inner battery pack reinforcing plate forms a new bracket cavity, increasing the number of bracket cavities and further enhancing the protective effect of the mounting ear.
[0022] In some embodiments, the support cavity between the outer plate of the battery pack and the reinforcing plate of the outer plate of the battery pack is used as the first support cavity. The reinforcing plate of the outer plate of the battery pack has a wave-shaped first convex-concave structure extending in the front-rear direction to change the width of the first support cavity in the front-rear direction. The first convex-concave structure makes the first support cavity a non-uniform cross-section cavity, which can further improve the torsional stiffness compared with the conventional uniform cross-section cavity structure.
[0023] In some embodiments, the support cavity between the inner plate of the battery pack and the reinforcing plate of the inner plate of the battery pack is used as the second support cavity. The reinforcing plate of the inner plate of the battery pack has a wavy second convex-concave structure extending in the front-rear direction to change the width of the second support cavity in the front-rear direction. The second convex-concave structure makes the second support cavity a non-uniform cross-section cavity to further improve its torsional stiffness.
[0024] In conjunction with the first aspect, in one possible implementation, the vehicle sill beam includes a side outer panel, a side reinforcing plate, and a floor sill beam arranged sequentially from the outside to the inside. The side reinforcing plate and the floor sill beam are supported by the side sill beam. The side sill beam contains several sill beam support plates, which divide the inner cavity of the side sill beam into several first sill beam cavities and several second sill beam cavities. The first sill beam cavities have a triangular or right-angled trapezoidal cross-section, while the second sill beam cavities have a square cross-section. The side sill beam employs a design that superimposes the first sill beam cavities (triangular or right-angled trapezoidal cross-sections) with the second sill beam cavities (square cross-sections), forming a grid-like distribution of small cavity structures within the side sill beam. This optimizes the structural strength and stability of the side sill beam, effectively improving its impact resistance.
[0025] In some embodiments, the outer side of the side sill beam and the side reinforcement plate are respectively provided with corresponding external mounting holes, and the inner side of the side sill beam and the floor sill beam are respectively provided with corresponding internal mounting holes.
[0026] The side sill beam is provided with a plurality of electrophoresis hole groups. Each electrophoresis hole group includes two first electrophoresis holes that are connected inside and outside. In the same electrophoresis hole group, one of the first electrophoresis holes is aligned with the outer mounting hole on the side sill beam, and the other first electrophoresis hole is offset from the outer mounting hole on the side sill beam in the front-back direction.
[0027] The side reinforcement plate has a second electrophoresis hole that runs through both the inside and outside. The second electrophoresis hole and the external mounting hole on the side reinforcement plate are offset in the front-back direction.
[0028] This embodiment achieves the purpose of rapid and sufficient flow of electrophoretic liquid by opening the first electrophoresis hole and the second electrophoresis hole, ensuring coating efficiency, while also avoiding affecting the structural strength of the side sill beam.
[0029] Secondly, embodiments of the present invention also provide a vehicle including the aforementioned battery pack side mounting structure assembly.
[0030] Compared with the prior art, the solution shown in this application improves the ability of the battery pack side mounting structure assembly to resist side pole impacts by adopting the above-mentioned battery pack side mounting structure assembly. It effectively improves the problem of severe collapse and deformation of the battery pack side mounting structure assembly after a side pole impact, enhances side impact safety, and thus helps to improve the quality and market competitiveness of the whole vehicle. Attached Figure Description
[0031] Figure 1 This is an assembly bottom view of the battery pack side mounting structure assembly provided in an embodiment of the present invention;
[0032] Figure 2 A schematic cross-sectional view of the battery pack side mounting structure assembly provided in an embodiment of the present invention;
[0033] Figure 3 This is a schematic diagram of the battery pack mounting bracket used in an embodiment of the present invention;
[0034] Figure 4 for Figure 3 A partial structural diagram of the battery pack mounting bracket;
[0035] Figure 5 This is a schematic diagram of the assembly cross-section of the battery pack mounting bracket used in an embodiment of the present invention;
[0036] Figure 6 This is a schematic diagram of the structure of the outer panel of the battery pack used in an embodiment of the present invention;
[0037] Figure 7 for Figure 5 A top view of section A;
[0038] Figure 8 This is a schematic diagram of the structure of the inner plate reinforcing plate of the battery pack used in an embodiment of the present invention;
[0039] Figure 9 This is a vertical cross-sectional view of the vehicle sill beam used in an embodiment of the present invention;
[0040] Figure 10 This is a top view cross-sectional schematic diagram of the vehicle sill beam used in an embodiment of the present invention;
[0041] Explanation of reference numerals in the attached figures:
[0042] 1. Vehicle body sill beam; 101. First electrophoresis hole; 102. Second electrophoresis hole; 110. Side outer panel; 120. Side reinforcement plate; 130. Floor sill beam; 140. Side sill beam; 141. Sill beam support plate; 142. First sill beam cavity; 143. Second sill beam cavity; 150. Design slope; 160. Third mounting sleeve; 170. Fourth mounting sleeve; 180. Mounting reinforcement plate; 181. Second reinforcing flange; 2. Battery pack mounting bracket; 201. Mounting ear; 210. Battery pack outer panel; 211. Wing plate; 2111. Sloping plate; 212. Connecting plate; 213. Outer panel connecting flange; 220. Battery pack inner panel; 221. Step plate; 222. First reinforcing flange; 230. Battery pack outer panel reinforcing plate; 231. External connecting flange; 240. Battery pack outer panel reinforcing plate; 250. Battery pack bottom plate; 251. Extended edge; 260. Battery pack top plate; 270. Battery pack inner panel reinforcing plate; 271. Internal connecting flange; 3. Floor; 4. Battery module accommodating space; 5. Energy absorption cavity; 6. Support cavity; 7. First mounting sleeve; 8. Second mounting sleeve; 9. First concave-convex structure; 10. Second concave-convex structure; 11. Draw rib; 12. First reinforcing rib; 13. Second reinforcing rib; 14. Third reinforcing rib; 15. Fourth reinforcing rib; 16. Fastener; 17. Lower inner panel of A-pillar; 18. Front side panel. Detailed Implementation
[0043] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0044] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.
[0045] In the claims, description, and accompanying drawings of this invention, the terms "upper" and "lower" refer to the vertical direction of the vehicle body; the terms "front" and "rear" refer to the front-rear direction of the vehicle body; the terms "left" and "right" refer to the left-right direction of the vehicle body; the term "inner" refers to the direction towards the central plane of symmetry of the vehicle body; and the term "outer" refers to the direction away from the central plane of symmetry of the vehicle body. Unless otherwise explicitly defined, the use of terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "clockwise," "counterclockwise," "high," and "low" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.
[0046] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.
[0047] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."
[0048] In the claims, description and drawings of this invention, if the term "fitting connection" is used, its implementation includes, but is not limited to, fitting welding, or connecting by threaded fasteners after fitting.
[0049] Please refer to the following: Figure 1 and Figure 2 The battery pack side mounting structure assembly provided by the present invention will now be described. The battery pack side mounting structure assembly is located on the left and right sides of the battery module, including a vehicle sill beam 1, a battery pack mounting bracket 2, and a floor 3; the vehicle sill beam 1 has an energy-absorbing cavity inside; the battery pack mounting bracket 2 is spaced apart on the inner side of the vehicle sill beam 1, forming a battery module accommodating space 4; a mounting ear 201 is formed on the lower outer side of the battery pack mounting bracket 2, the mounting ear 201 is a hollow component, and it is connected to the lower side of the vehicle sill beam 1; the floor 3 is located above the battery pack mounting bracket 2 and is fitted and connected to the inner side of the vehicle sill beam 1; the vehicle sill beam 1, the battery pack mounting bracket 2, and the floor 3 enclose an energy-absorbing cavity 5 (e.g., Figure 1 (The area selected by the dashed box in the image).
[0050] In this embodiment, the inner and outer widths of the energy absorption cavity 5 are greater than 15mm (e.g., 20mm, 25mm, 30mm, 35mm) to provide an effective energy absorption space while meeting the battery pack assembly requirements.
[0051] In this embodiment, the gap between the top surface of the battery pack mounting bracket 2 and the floor 3 is set to be no less than 10mm (e.g., 12mm, 14mm, 16mm, 18mm) to avoid interference between the battery pack mounting bracket 2 and the floor 3 during assembly, or collision due to vehicle vibration. At the same time, it is also necessary to avoid the problem of the battery pack mounting bracket 2 being too low due to excessive gap.
[0052] The existing battery pack side mounting structure mainly focuses on improving the connection strength and integrity with the sill beam. This results in the impact force on the sill beam being directly transmitted to the side mounting structure of the battery pack when encountering a side post collision. The side mounting structure bears a large impact force and is prone to severe collapse and deformation.
[0053] To solve the above problems, the battery pack side mounting structure assembly provided in this embodiment, compared with the prior art, allows the vehicle sill beam 1 to contact the colliding object first when a side collision occurs. If the collision force is small, only the vehicle sill beam 1 will deform, while the mounting ear 201 will not deform and will not squeeze the battery module inside the battery pack.
[0054] If the side impact force is large, the sill beam 1 will crumple and deform after the collision. After the deformation reaches a certain extent, the impacting object and the sill beam 1 will further compress the mounting ear 201. Since the mounting ear 201 is a hollow structure, it has a certain crumple and energy absorption capacity, which dissipates the impact energy to a certain extent and achieves multi-stage crumple and energy absorption. At the same time, since the mounting ear 201 and the sill beam 1 are stacked in the vertical direction, the mounting ear 201 can disperse the force on the sill beam 1 to a certain extent after contacting the impacting object, reduce the degree of deformation of the sill beam 1, and further reduce the degree of compression of the mounting ear 201 by the deformation of the sill beam 1. Based on this, the vehicle sill beam 1, battery pack mounting bracket 2, and floor 3 enclose a non-contact energy-absorbing cavity 5, creating an area between the vehicle sill beam 1 and the battery pack. This provides clearance for the deformation of the vehicle sill beam 1, allowing it to dissipate side impact energy more effectively and preventing it from directly compressing the battery pack. This provides soft protection for the individual battery modules within the battery pack. Furthermore, the impact force on the vehicle sill beam 1 is decomposed and transmitted through it. Part of the force, after being fully absorbed by the energy-absorbing cavity 5, is transmitted to the other side of the vehicle through the floor 3 and the top structure of the battery pack mounting bracket 2. Another part of the force is transmitted through the mounting ears 201 to the bottom of the battery pack mounting bracket 2, then through the bottom structure of the battery pack mounting bracket 2 to the mounting ears 201 on the other side, ultimately reaching the other side of the vehicle. This effectively decomposes and transmits impact energy, enhancing the vehicle's resistance to impact deformation.
[0055] Overall, this embodiment organically combines the solutions of setting a hollow mounting ear 201, adding an energy absorption cavity 5, and optimizing the force transmission path, thereby improving the ability of the battery pack side mounting structure assembly to resist side pillar impacts and effectively improving the problem of severe collapse and deformation of the battery pack side mounting structure assembly after a side pillar impact.
[0056] In some embodiments, on a surface perpendicular to the left-right direction, the orthographic projection of the battery module accommodating space 4 at least partially overlaps with the orthographic projection of the vehicle body sill beam 1, such as... Figure 2 As shown. This design not only meets the requirements for forming the energy absorption cavity 5, but also allows the battery pack to be closer to the floor 3, improving the compactness of the battery pack's vertical arrangement.
[0057] In some embodiments, see Figure 2 and Figure 5 The mounting ear 201 has multiple closed support cavities 6 distributed in the inward and outward directions, wherein the lower edge of at least one support cavity 6 extends to the bottom of the battery module accommodating space 4.
[0058] This embodiment uses a multi-cavity internal and external stacking method to form the mounting ear 201, which increases the complexity of the internal structure of the mounting ear 201 and obtains a larger load-bearing threshold in the internal and external directions, enabling the mounting ear 201 to withstand greater impact and compression forces, thereby improving the structural strength and impact resistance of the mounting ear 201. At the same time, the multi-cavity design can better transmit the impact force in the internal and external directions when a side pillar collision occurs, enhancing the stability of the mounting ear 201 structure and effectively improving the protection effect on the battery module. In addition, since the mounting ear 201 adopts a multi-cavity hollow design, the amount of material used in the mounting ear 201 can be effectively reduced while meeting the requirements of structural strength and other performance, thus achieving a better lightweight design. Furthermore, since the lower edge of the bracket cavity 6 extends to the bottom of the battery module accommodating space 4, the protective cavity structure can more comprehensively cover the main body of the battery pack, thereby providing more comprehensive protection and effectively resisting the impact damage of side pillar collisions.
[0059] Optionally, the following are examples of how the bracket cavity 6 and the bottom of the battery module accommodating space 4 are adapted: 1) The lower surfaces of all bracket cavities 6 are flush, and the lower surfaces of bracket cavities 6 are slightly higher than the lower surfaces of the battery module accommodating space 4, with a height difference of no more than 2mm; 2) The lower surfaces of all bracket cavities 6 are flush, and the lower surfaces of bracket cavities 6 are flush with or lower than the lower surfaces of the battery module accommodating space 4; 3) The lower surfaces of bracket cavities 6 are not uniform in height, and at least one of the lower surfaces of bracket cavities 6 is slightly higher than the lower surfaces of the battery module accommodating space 4, with a height difference of no more than 2mm; 4) The lower surfaces of bracket cavities 6 are not uniform in height, and at least one of the lower surfaces of bracket cavities 6 is flush with or lower than the lower surfaces of the battery module accommodating space 4.
[0060] Optionally, the height of the upper surface of at least one of the bracket cavities 6 is not lower than the height of the lower surface of the vehicle sill beam 1, ensuring the full coverage of the cavity. The specific implementation method is similar to the aforementioned adaptation method of the bracket cavity 6 to the bottom of the battery module accommodating space 4, and will not be described again here.
[0061] Optionally, the vertical height of the support cavity 6 increases sequentially from the outside to the inside. This embodiment combines the multi-cavity internal and external superposition design with the variable height design inside and outside the support cavity 6, further increasing the complexity of the internal structure of the mounting ear 201, enabling the mounting ear 201 to withstand greater impact and compression forces.
[0062] Furthermore, the height of each individual support cavity 6 gradually increases from the outside in, forming a trapezoidal or triangular cavity structure. This effectively enhances the structural strength of the area where each support cavity 6 is located in the mounting ear 201. By stacking multiple support cavities 6 in this way, the overall structural strength of the mounting ear 201 is significantly improved. More specifically, there is a smooth transition between adjacent support cavities 6, avoiding the formation of steps. This prevents stress concentration at stepped structures on the mounting ear 201, further enhancing the structural stability and strength of the mounting ear 201.
[0063] In some embodiments, the battery pack mounting bracket 2 described above can be adopted as follows: Figures 2 to 7 The structure shown. See also Figures 2 to 7 The battery pack mounting bracket 2 includes an outer battery pack panel 210, an inner battery pack panel 220, and an outer battery pack panel reinforcing plate 230. The outer battery pack panel 210 is a U-shaped panel with an inward opening, and the distance between the upper and lower wing plates 211 of the outer battery pack panel 210 gradually increases from the outside to the inside. The inner battery pack panel 220 blocks the inner opening of the outer battery pack panel 210 and forms a battery module accommodating space 4. The outer battery pack panel reinforcing plate 230 is supported and connected between the upper and lower wing plates 211 of the outer battery pack panel 210, and divides the space enclosed by the outer battery pack panel 210 and the inner battery pack panel 220 into multiple bracket cavities 6. Among them, a first mounting sleeve 7 is embedded in the outermost bracket cavity 6 along the vertical direction, and the first mounting sleeve 7 is connected to the vehicle body sill beam 1 by fasteners 16. The outer battery pack panel 210, the inner battery pack panel 220, and the outer battery pack panel reinforcing plate 230 cooperate to form a mounting ear 201.
[0064] In this embodiment, the battery pack outer panel 210, battery pack inner panel 220, and battery pack outer panel reinforcing plate 230 form the mounting ear 201. The battery pack inner panel 220 also serves to form the battery module accommodating space 4. The overall structure of the battery pack mounting bracket 2 is simple and compact, with significantly reduced redundant components, higher assembly efficiency, and is conducive to achieving lightweight design. Furthermore, the battery pack outer panel 210 features a U-shaped variable height design. Based on this, a first mounting sleeve 7 is inserted near the outer side of the battery pack outer panel 210. When installing the fastener 16, the fastener 16 directly passes through the first mounting sleeve 7 and connects to the lower side of the vehicle body sill beam 1. The twisting and compressive forces generated during the assembly of the fastener 16 are borne by the first mounting sleeve 7, effectively avoiding deformation of the battery pack outer panel 210 and making the fastening effect of the fastener 16 more reliable. In this embodiment, the outer panel 210 of the battery pack forms the external frame of the mounting ear 201, avoiding excessive connection gaps on the outer surface of the mounting ear 201. The reinforcing plate 230 of the outer panel of the battery pack forms internal support, preventing the outer panel 210 of the battery pack from collapsing and deforming. It can also achieve the purpose of separating the bracket cavity 6 through a simple structure, reducing the connection gaps inside the mounting ear 201. The structure formed by the outer panel 210 of the battery pack, the inner panel 220 of the battery pack, and the reinforcing plate 230 of the outer panel of the battery pack has strong integrity, fewer connection gaps, and higher structural strength.
[0065] In this embodiment, the battery pack outer panel 210, the battery pack inner panel 220, and the battery pack outer panel reinforcing plate 230 can be assembled together by welding or other means, or the battery pack outer panel 210, the battery pack inner panel 220, and the battery pack outer panel reinforcing plate 230 can be integrally connected by extrusion molding or other means. This is not a unique limitation.
[0066] In some specific embodiments of the connection between the outer battery pack panel 210, the inner battery pack panel 220, and the outer battery pack panel reinforcing plate 230, see [reference needed]. Figure 2 and Figure 5 The outer wing plate 211 on the lower side of the battery pack outer panel 210, the outer connecting flange 231 of the battery pack outer panel reinforcing plate 230, and the inner panel 220 of the battery pack are sequentially stacked from bottom to top. A battery pack outer panel reinforcing plate 240 is also attached to the lower side of the lower wing plate 211 of the battery pack outer panel 210. The stacking connection can be achieved through methods including, but not limited to, multi-layer welding. The lower connection area of the battery pack outer panel 210, the battery pack outer panel reinforcing plate 230, and the inner panel 220 adopts a multi-layer stacked connection, resulting in a more concentrated connection area and higher structural strength. This helps optimize the overall integrity of the connection between the battery pack outer panel 210, the battery pack inner panel 220, and the battery pack outer panel reinforcing plate 230. Based on this, a battery pack outer panel reinforcing plate 240 is further added at the stacking connection location to expand the load-bearing area of the multi-layer sheet metal overlap.
[0067] Optionally, to increase the load-bearing area, the inner edge of the battery pack outer panel reinforcing plate 240 is approximately flush with the inner edge of the lower wing plate 211 of the battery pack outer panel 210, and the outer edge of the battery pack outer panel reinforcing plate 240 protrudes outward beyond the outer edge of the outer connecting flange 231. Furthermore, the edge of the battery pack outer panel reinforcing plate 240 extends outward to form an extension edge 251, which extends to the intersection of the lower wing plate 211 of the battery pack outer panel 210 and the connecting plate 212, maximizing the coverage area of the battery pack outer panel reinforcing plate 240. If the lower wing plate 211 of the battery pack outer panel 210 is provided with a drawing rib 11, a clearance notch corresponding to the drawing rib 11 is provided on the extension edge 251.
[0068] Optionally, based on the first reinforcing rib 12 provided between the lower wing plate 211 of the battery pack outer plate 210 and the middle connecting plate 212, a second reinforcing rib 13 is provided on the edge of the extended side 251 to further strengthen the area, thereby improving the overall structural strength of the battery pack mounting bracket 2.
[0069] In some more specific embodiments, see Figure 2 and Figure 5 The battery pack outer panel reinforcing plate 230 is a C-shaped plate with an inward opening, and the battery pack inner panel 220 is a stepped plate. The stepped plate 221 on the lower side of the battery pack outer panel 210 can support the battery module. The upper wing plate 211 of the battery pack outer panel reinforcing plate 230 is attached to the upper wing plate 211 of the battery pack outer panel 210. The lower wing plate 211 of the battery pack outer panel 210, the lower wing plate 211 of the battery pack outer panel reinforcing plate 230, and the lower stepped plate 221 of the battery pack inner panel 220 are stacked and connected in sequence. The lower side of the lower wing plate 211 of the battery pack outer panel 210 is also attached to the battery pack outer panel reinforcing plate 240. The battery pack outer panel reinforcing plate 230 itself has high structural strength and can form a better supporting and reinforcing effect between the wing plates 211 on both sides of the battery pack outer panel 210. The stepped design of the inner panel 220 of the battery pack not only meets the requirements for accommodating the battery module, but also provides good support and sealing at the opening of the outer panel 210 of the battery pack, ensuring the structural stability of the outer panel 210 of the battery pack.
[0070] In some embodiments, see Figure 2 and Figure 5With the inner panel 220 of the battery pack being a stepped plate, the battery pack mounting bracket 2 also includes a battery pack base plate 250, which is fitted and connected to the lower side of the stepped plate 221 under the inner panel 220 of the battery pack. This base plate provides further support, reinforcement, and sealing to the lower side of the battery pack mounting bracket 2. During force transmission, the force from the impact side can be transmitted to the other side of the vehicle body through the battery pack base plate 250. By setting the battery pack base plate 250, the overall structural strength of the battery pack mounting bracket 2 is enhanced, improving its bending and torsional resistance, preventing deformation of the battery pack mounting bracket 2 under minor impacts, and reducing the maintenance cost of the battery pack mounting bracket 2. Secondly, it can achieve further sealing of the lower side of the battery pack mounting bracket 2. In this way, the inner panel 220 of the battery pack can be implemented in the following ways: First, the lower side of the inner panel 220 of the battery pack does not completely cover the battery module, that is, there is a gap on the lower side of the inner panel 220 of the battery pack. The overall sealing is achieved by the bottom plate 250 of the battery pack, which reduces the material used in the inner panel 220 of the battery pack and is conducive to achieving lightweight design; Second, the lower side of the inner panel 220 of the battery pack completely covers the battery module, that is, the lower side of the inner panel 220 of the battery pack is not designed with a large area of gap. The bottom plate 250 of the battery pack and the lower side of the inner panel 220 of the battery pack are stacked and connected, resulting in high structural strength.
[0071] In some embodiments, see Figure 2 and Figure 5 With the inner battery pack panel 220 being a stepped plate, the battery pack mounting bracket 2 also includes a battery pack top plate 260, which is attached to the upper side of the upper stepped plate 221 of the inner battery pack panel 220. This top plate provides sealing and further reinforcement to the upper side of the battery pack mounting bracket 2. During force transmission, the force from the impact side can be transmitted to the other side of the vehicle body through the battery pack top plate 260. The upper stepped plate 221 of the inner battery pack panel 220 extends outwards, while the lower stepped plate 221 extends inwards. By providing the battery pack top plate 260, the overall structural strength of the battery pack mounting bracket 2 is enhanced, improving its bending and torsional resistance, preventing deformation of the battery pack mounting bracket 2 under minor impacts, and reducing maintenance costs.
[0072] In practice, a second mounting sleeve 8 is provided on the upper step plate 221 of the inner panel 220 of the battery pack, and the edge of the top plate 260 of the battery pack is connected to the second mounting sleeve 8 by fasteners 16, thus achieving a fixed connection between the top plate 260 of the battery pack and the inner panel 220 of the battery pack.
[0073] Optionally, the edge of the step plate 221 on the lower side of the inner panel 220 of the battery pack is also provided with a first reinforcing flange 222 to improve the structural strength of the edge of the inner panel 220 of the battery pack, prevent the step plate 221 from deforming when the fastener 16 is installed, and also prevent the step plate 221 from deforming after long-term use or multiple disassembly and assembly, thereby improving the reliability of the fit between the step plate 221 and the top plate 260 of the battery pack and reducing the overall maintenance cost of the battery pack mounting bracket 2.
[0074] Optionally, a sealing gasket may be provided between the top plate 260 of the battery pack and the stepped plate 221 to ensure the sealing of the top of the battery pack mounting bracket 2.
[0075] Optionally, the battery pack top plate 260 is an upwardly arched member. The cross-section of the battery pack top plate 260 perpendicular to the front-back direction is "U" shaped. The battery pack top plate 260 as a whole has higher structural strength and better bending and torsional resistance, which promotes the improvement of the overall structural strength of the battery pack mounting bracket 2. In the event of a side collision, it reduces the degree of deformation of the battery pack mounting bracket 2 and avoids damage to the battery module due to compression.
[0076] In some embodiments, see Figure 2 and Figure 5 The battery pack mounting bracket 2 also includes an inner battery pack reinforcing plate 270, which is fitted and connected to the inner side of the inner battery pack 220, forming a bracket cavity 6. The outer battery pack 210, inner battery pack 220, outer battery pack reinforcing plate 230, and inner battery pack reinforcing plate 270 cooperate to form a mounting ear 201. The inner battery pack reinforcing plate 270 strengthens the inner side of the inner battery pack 220, improving the structural strength of the bottom of the battery module accommodating space 4. Simultaneously, the inner battery pack reinforcing plate 270 forms a new bracket cavity 6, increasing the number of bracket cavities 6 and further enhancing the protective effect of the mounting ear 201.
[0077] In some embodiments, see Figure 7 To further improve the torsional stiffness of the area where the vehicle body sill beam 1 is located, a bracket cavity 6 between the outer plate 210 of the battery pack and the reinforcing plate 230 of the outer plate of the battery pack is used as the first bracket cavity. A first concave-convex structure 9 extending in the front-rear direction and in a wavy shape is formed on the reinforcing plate 230 of the outer plate of the battery pack, so that the width of the first bracket cavity changes in the front-rear direction, making the first bracket cavity a non-uniform cross-section cavity. Compared with the conventional uniform cross-section cavity structure, its torsional stiffness can be further improved by 300 to 400 N·m / °.
[0078] Similarly, see Figure 7The second support cavity is a support cavity 6 between the inner plate 220 of the battery pack and the reinforcing plate 270 of the inner plate of the battery pack. A second concave-convex structure 10 extending in the front-back direction and in a wavy shape is formed on the reinforcing plate 270 of the inner plate of the battery pack, so as to change the width of the second support cavity in the front-back direction, so that the second support cavity forms a non-uniform cross section cavity, thereby further improving its torsional stiffness.
[0079] Optionally, the first concave-convex structure 9 and the second concave-convex structure 10 can be concave-convex structures regularly distributed along the front-back direction. For example, in the front-back direction, all protrusions have the same structural dimensions, and all recesses have the same structural dimensions; or, in the front-to-back direction, the width of the protrusions gradually increases, and the width of the recesses gradually decreases; other embodiments will not be listed here. Of course, the first concave-convex structure 9 and the second concave-convex structure can also be irregularly distributed in the front-back direction, which will not be listed here.
[0080] More specifically, to reduce manufacturing difficulty and further improve the structural strength of the area containing the protrusions and depressions, the cross-section of the protrusions is trapezoidal, and the cross-section of the depressions is also trapezoidal, such as... Figure 7 As shown.
[0081] In some embodiments, see Figures 3 to 5 In the battery pack outer panel 210, through holes are respectively provided on the upper and lower wing plates 211. The first mounting sleeve 7 passes through the through holes on both wing plates 211 and is fixed to the battery pack outer panel 210 by welding or other means. In order to improve the structural strength of the area where the first mounting sleeve 7 is located, an upwardly protruding drawing rib 11 is provided on the lower wing plate 211. The through holes on the lower wing plate 211 are opened at the drawing rib 11, and two adjacent drawing ribs 11 are spaced apart by a certain distance. At the same time, since the area where the drawing rib 11 is located is concave relative to the lower surface of the lower wing plate 211, the distance between the upper and lower through holes is also shortened, thereby shortening the length of the first mounting sleeve 7, which is conducive to achieving a lightweight design. In addition, the periphery of the drawing rib 11 can also enclose and protect the exposed ends of the first mounting sleeve 7 and the corresponding fasteners 16, preventing collisions with other structures after assembly.
[0082] In some embodiments, see Figure 3 and Figure 4 In the outer panel 210 of the battery pack, the upper and lower wing plates 211 are connected by the middle connecting plate 212 to make the outer panel 210 of the battery pack U-shaped. The upper wing plate 211 and the middle connecting plate 212 are provided with first reinforcing ribs 12 to strengthen the two connecting areas and prevent the outer panel 210 of the battery pack from collapsing and deforming.
[0083] In some embodiments, see Figure 5 The inner edge of the upper wing plate 211 of the battery pack outer panel 210 is bent upward to form an outer panel connecting flange 213. The outer panel connecting flange 213 is bonded to the outer facade of the battery pack inner panel 220 by welding or other means to ensure the reliability of the connection with the battery pack inner panel 220, while not affecting the assembly of the battery pack inner panel 220 and the battery pack top plate 260.
[0084] Optionally, the upper side wing 211 of the battery pack outer panel 210 is provided with an inclined plate portion 2111. The inclined plate portion 2111 gradually slopes upward from the outside to the inside, and the battery pack reinforcing plate is supported on the outer edge of the inclined plate portion 2111. By setting the inclined plate portion 2111, the volume of the bracket cavity 6 can be further expanded, thereby increasing the effective energy absorption space. At the same time, it can also form an inclined support between the vehicle sill beam 1 and the battery pack mounting bracket 2, so that the battery pack outer panel 210 not only has a reliable load-bearing effect in the inward and outward directions, but also improves the load-bearing capacity of the battery pack outer panel 210 in the vertical direction, realizing multi-directional load-bearing, further improving the structural strength of the battery pack mounting bracket 2, and thus optimizing the reliability against side impacts. Preferably, the inclined plate portion 2111 directly intersects with the outer panel connecting flange 213, avoiding the need to set more transition structures between the inclined plate portion 2111 and the outer panel connecting flange 213. This simplifies the structure of the battery pack mounting bracket 2 and also achieves a better support effect.
[0085] In some embodiments, see Figure 5 and Figure 8 In order to achieve the effect of forming a support cavity 6 between the inner panel 220 of the battery pack, the reinforcing plate 270 of the inner panel of the battery pack is an inwardly arched plate. The upper and lower sides of the arched area are provided with inner connecting flanges 271. The lower inner connecting flange 271 is fitted and connected to the step plate 221 on the lower side of the inner panel 220 of the battery pack, and the upper inner connecting flange 271 is fitted and connected to the inner surface of the inner panel 220 of the battery pack.
[0086] Examples of ways to achieve the arched form of the inner panel reinforcement plate 270 of the battery pack are as follows: 1) The inner panel reinforcement plate 270 of the battery pack is an inwardly arched arc shape; 2) The inner panel reinforcement plate 270 of the battery pack is an inwardly arched L-shape, which has vertically extending upright plates and horizontally extending horizontal plates; 3) The inner panel reinforcement plate 270 of the battery pack is an inwardly arched multi-level stepped type, which has multiple horizontal plates and multiple upright plates.
[0087] Optionally, a third reinforcing rib 14 is provided on the stepped plate 221 on the lower side of the inner panel 220 of the battery pack. The inner connecting flange 271 on the lower side of the reinforcing plate 270 of the inner panel of the battery pack is attached to the third reinforcing rib 14. The third reinforcing rib 14 further strengthens the area connected to the reinforcing plate 270 of the inner panel of the battery pack, preventing deformation in this area during the welding assembly process and subsequent use. If a battery pack bottom plate 250 is provided, a fourth reinforcing rib 15 larger than the third reinforcing rib 14 is provided on the battery pack bottom plate 250. The inner connecting flange 271, the third reinforcing rib 14, and the fourth reinforcing rib 15 are stacked and connected by a three-layer welding method.
[0088] In some embodiments, the aforementioned vehicle sill beam may be adopted as follows: Figure 2 and Figure 9 The structure shown. See also Figure 2 and Figure 9 The vehicle sill beam 1 includes a side outer panel 110, a side reinforcing plate 120, and a floor sill beam 130 arranged sequentially from the outside to the inside. A side sill beam 140 is supported and connected between the side reinforcing plate 120 and the floor sill beam 130. A plurality of sill beam support plates 141 are provided inside the side sill beam 140. The sill beam support plates 141 divide the inner cavity of the side sill beam 140 into a plurality of first sill beam cavities 142 and a plurality of second sill beam cavities 143. The cross-section of the first sill beam cavity 142 is triangular or right trapezoidal, and the cross-section of the second sill beam cavity 143 is square (rectangular or square). Both the first sill beam cavity 142 and the second sill beam cavity 143 extend in the front-rear direction. In this embodiment, a cavity is formed between the outer side panel 110 and the reinforcing side panel 120. After a side pillar impact, the outer side panel 110 deforms first. As the impact intensifies, the reinforcing side panel 120 is subjected to force and simultaneously transfers the force to the side sill beam 140. The side sill beam 140 collapses to absorb energy. Therefore, the cavities between the outer side panel 110 and the floor sill beam 130 are both energy-absorbing cavities. In this embodiment, the side sill beam 140 adopts a design that combines a first sill beam cavity 142 with a triangular or right trapezoidal cross-section and a second sill beam cavity 143 with a square cross-section. This creates a grid-like distribution of small cavity structures within the side sill beam 140, optimizing the structural strength and stability of the side sill beam 140 and effectively improving the impact resistance of the vehicle sill beam 1.
[0089] In some embodiments, see Figure 9 and Figure 10The side sill beam 140 and the side reinforcing plate 120 are respectively provided with corresponding external mounting holes, and the side sill beam 140 and the floor sill beam 130 are respectively provided with corresponding internal mounting holes. The corresponding external mounting holes are connected by fasteners 16, and the corresponding internal mounting holes are connected by fasteners 16, thereby realizing the connection between the side sill beam 140 and the side reinforcing plate 120 and the floor sill beam 130. Multiple electrophoresis hole groups are provided on the side sill beam 140. Each electrophoresis hole group includes two first electrophoresis holes 101 that are connected inside and outside. In the same electrophoresis hole group, one of the first electrophoresis holes 101 is aligned with the external mounting hole on the side sill beam 140, and the other first electrophoresis hole 101 is offset from the external mounting hole on the side sill beam 140 in the front-back direction. A second electrophoresis hole 102 that is connected inside and outside is provided on the side sill plate 120. The second electrophoresis hole 102 is offset from the external mounting hole on the side sill plate 120 in the front-back direction.
[0090] The assembly process of the vehicle sill beam 1 and the battery pack mounting bracket 2 in this embodiment is roughly as follows: the side reinforcement plate 120 is connected to the side sill beam 140 by fasteners 16, and the fasteners 16 are tightened → the side outer plate 110 is welded and fixed to the side reinforcement plate 120 → the floor sill beam 130 is connected to the side sill beam 140 by fasteners 16, but the fasteners 16 are not tightened → the entire vehicle sill beam 1 is coated with electrophoresis → the fasteners 16 between the floor sill beam 130 and the side sill beam 140 are tightened → the mounting ear 201 is connected to the floor sill beam 130 using the fasteners 16.
[0091] To improve the corrosion resistance of sheet metal parts during electrophoresis painting, since the side sill beam 140 occupies about two-thirds of the space inside the body sill beam 1, it will obstruct the electrophoretic liquid during painting. To ensure that the electrophoretic liquid can flow fully in the body sill beam 1, a first electrophoresis hole 101 is opened on the side sill beam 140. Combined with the gap caused by the loosening of the fastener 16 between the floor sill beam 130 and the side sill beam 140, the electrophoretic liquid can flow fully in the inner cavity of the side sill beam 140 and the space on the upper and lower sides of the side sill beam 140. A second electrophoresis hole 102 is opened on the side reinforcement plate 120 so that the electrophoretic liquid can flow fully into the space between the side reinforcement plate 120 and the side outer plate 110. The first electrophoresis hole 101 on the side sill beam 140 has a significant impact on the flow of electrophoretic liquid. If the number of first electrophoresis holes 101 is small, it will take a long time to achieve sufficient flow of electrophoretic liquid, affecting the efficiency of the coating operation. If the number of first electrophoresis holes 101 is large, it will affect the structural strength of the side sill beam 140. Therefore, this embodiment adopts a segmented opening scheme, with two first electrophoresis holes 101 in each segment, which meets the requirements for electrophoretic liquid flow and has no significant negative impact on the structural strength of the side sill beam 140. Furthermore, since some of the first electrophoresis holes 101 also overlap with the external mounting holes on the side sill beam 140, the opening area on the side sill beam 140 is more concentrated, minimizing the impact of the openings on the structural strength. Figure 10 The straight arrows in the diagram indicate the direction of flow of the electrophoresis solution.
[0092] In specific implementation, in the vehicle body sill beam 1, the inner front part of the floor sill beam 130 is fitted and connected to the inner A-pillar panel 17, and the front end of the main body of the vehicle body sill beam 1 is also covered by a side panel front cover 18. In specific implementation, the second electrophoresis hole 102 can be aligned with the first electrophoresis hole 101 (e.g., Figure 10 The second electrophoresis well 102 on the right side (as shown) can also be offset from the first electrophoresis well 101 (e.g.) Figure 10 (The second electrophoresis well 102 in the middle section is shown).
[0093] It should also be noted that, since the side sill beam 140 has multiple layers of vertical plates in the inner and outer directions, each layer of vertical plates is provided with a first electrophoresis hole 101, thereby realizing the design of the first electrophoresis hole 101 penetrating through the inner and outer sides of the side sill beam 140.
[0094] In some embodiments of the vehicle body door sill beam, see Figure 2 and Figure 9To improve the appearance and reduce wind resistance, both the outer side panel 110 and the reinforcing side panel 120 have a design slope 150. The first sill beam cavity 142 is provided corresponding to the design slope 150 so that the side sill beam 140 has a contour adapted to the design slope 150. Similarly, if the floor sill beam 130 also has a design slope 150, then the inner side of the side sill beam 140 is also provided with a corresponding first sill beam cavity 142.
[0095] It should also be noted that the distribution of the first sill beam cavity 142 and the second sill beam cavity 143 is illustrated in the following example: 1) The second sill beam cavities 143 are clustered together, and the first sill beam cavities 142 are located on the outer periphery of the side sill beam 140, such as... Figure 9 An embodiment is shown in which the first threshold beam cavity 142 is located on the upper outer side of the side threshold beam 140; 2) the second threshold beam cavity 143 is arranged around the first threshold beam cavity 142; 3) there are multiple first threshold beam cavities 142, of which the second threshold beam cavity 143 is arranged around the perimeter of a number of the first threshold beam cavities 142, and the remaining number of first threshold beam cavities 142 are located at the edge of the side threshold beam 140.
[0096] Since the arrangement of the first sill beam cavity 142 and the second sill beam cavity 143 depends on the distribution of the sill beam support plate 141, the arrangement must consider not only the reinforcement effect but also avoid the negative impact of too many sill beam support plates 141 on the lightweight design. In the design, the sill beam support plate 141 is a grid-like cross-distribution plate, dividing the inner cavity of the side sill beam 140 into a grid pattern. Combined with the layout of the first sill beam cavity 142 and the second sill beam cavity 143, this enhances the structural strength of the side sill beam 140, increases the force transmission path of the side sill beam 140, and allows the side sill beam 140 to better withstand side impact forces, reducing the deformation of the vehicle body sill beam 1 during a side impact.
[0097] This embodiment Figure 9 An exemplary layout is shown with large second sill beam cavities 143 on both the inner and outer sides, which makes the layout of the first sill beam cavity 142 and the second sill beam cavity 143 asymmetrical. This results in the sill beam cavities inside the side sill beam 140 being staggered, with more force transmission paths and better decomposition of side impact forces. At the same time, this arrangement can also better meet the installation avoidance requirements of the fasteners 16 on both the inner and outer sides of the side sill beam 140.
[0098] Optionally, in order to facilitate the installation of fastener 16, a third mounting sleeve 160 is provided on the inner and outer sides of the side sill beam 140 respectively. The third mounting sleeve 160 can be in the form of penetrating the side wall of the side sill beam 140, or it can be in the form of being fitted and connected to the inner wall of the cavity 143 of the second sill beam.
[0099] In some embodiments, a fourth mounting sleeve 170 is provided on the lower side of the inner cavity of the vehicle body sill beam 1. The fastener 16 passes through the first mounting sleeve and is connected to the fourth mounting sleeve 170. If the fastener 16 is a bolt, the fourth mounting sleeve 170 is provided with a corresponding internal thread hole.
[0100] Based on the above embodiment, a mounting reinforcement plate 180 is also fitted and connected inside the vehicle sill beam 1. A fourth mounting sleeve 170 is fitted and connected to the upper side of the mounting reinforcement plate 180 to further reinforce this area and prevent the vehicle sill beam 1 from deforming or even cracking due to the force exerted during the installation of the fastener 16. Optionally, the mounting reinforcement plate 180 has a second reinforcing flange 181 on its edge to further improve the strength and bending resistance of the mounting reinforcement plate 180.
[0101] Furthermore, based on the aforementioned embodiment of the battery pack mounting bracket 2 and the side sill beam, the force transmission situation during a side pole collision is explained in more detail below: When a side pole collision occurs, the collision force is first transmitted to the vehicle sill beam 1. After the side sill beam 140 fully bears the force, the remaining collision force is transmitted through two paths. One path passes through the connection point between the mounting ear 201 and the floor sill beam 130, and after being fully bearn by multiple bracket cavities 6 in sequence, it is transmitted along the battery pack bottom plate 250 to the other side of the vehicle. The other force transmission path fully absorbs the collision energy through the energy absorption cavity 5, and then transmits it to the other side of the vehicle through the battery pack top plate 260 and the floor 3 respectively.
[0102] This application uses a mounting ear 201 with multiple inner and outer superimposed bracket cavities 6 combined with an energy absorption cavity 5 to fully attenuate the collision energy and then efficiently transfer it to the other side of the vehicle body. This effectively protects the battery module in the battery module housing space 4 and effectively improves the problem that the battery side mounting structure is prone to collapse and deformation, which can damage the battery module. The battery pack side mounting structure assembly has stronger impact and deformation resistance.
[0103] Based on the same inventive concept, this application also provides a vehicle including the above-described battery pack side mounting structure assembly.
[0104] Compared with the prior art, the vehicle provided in this embodiment improves the ability of the battery pack side mounting structure assembly to resist side pole impacts by adopting the above-mentioned battery pack side mounting structure assembly. This effectively improves the problem of severe collapse and deformation of the battery pack side mounting structure assembly after a side pole impact, enhances side impact safety, and thus helps to improve the overall vehicle quality and market competitiveness.
[0105] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A battery pack side mount structure assembly, characterized by, include: The vehicle body door sill beam (1) has an energy-absorbing cavity inside; A battery pack mounting bracket (2) is spaced apart on the inner side of the vehicle sill beam (1) and forms a battery module accommodating space (4); a mounting ear (201) is formed on the lower part of the outer side of the battery pack mounting bracket (2), the mounting ear (201) is a hollow component and is connected to the lower side of the vehicle sill beam (1); Floor (3) is located above the battery pack mounting bracket (2) and is fitted and connected to the inner side of the vehicle body sill beam (1); The vehicle sill beam (1), the battery pack mounting bracket (2), and the floor (3) together form an energy-absorbing cavity (5).
2. The battery pack side mount structure assembly of claim 1, wherein, The mounting ear (201) has a plurality of closed support cavities (6) distributed in the inward and outward directions, wherein the lower edge of at least one of the support cavities (6) extends to the bottom of the battery module accommodating space (4).
3. The battery pack side mount structure assembly of claim 2, wherein, The battery pack mounting bracket (2) includes: The outer panel (210) of the battery pack is a U-shaped panel with an inward opening. The distance between the upper and lower wing plates (211) of the outer panel (210) of the battery pack gradually increases from the outside to the inside. The inner panel (220) of the battery pack blocks the inner opening of the outer panel (210) of the battery pack and forms the battery module accommodating space (4); The battery pack outer plate reinforcing plate (230) is supported and connected between the upper and lower wing plates (211) of the battery pack outer plate (210), and divides the space formed by the battery pack outer plate (210) and the battery pack inner plate (220) into multiple bracket cavities (6). Among them, the outermost bracket cavity (6) is fitted with a first mounting sleeve (7) in the vertical direction. The first mounting sleeve (7) is connected to the vehicle body sill beam (1) by fasteners (16). The battery pack outer plate (210), the battery pack inner plate (220), and the battery pack outer plate reinforcing plate (230) cooperate to form the mounting ear (201).
4. The battery pack side mount structure assembly of claim 3, wherein, The wing plate (211) on the lower side of the outer panel (210) of the battery pack, the outer connecting flange (231) of the reinforcing plate (230) of the outer panel of the battery pack, and the inner panel (220) of the battery pack are stacked and connected sequentially from bottom to top. The lower side of the wing plate (211) on the lower side of the outer panel (210) of the battery pack is also attached to a reinforcing plate (240) of the outer panel of the battery pack.
5. The battery pack side mount structure assembly of claim 4, wherein, The battery pack mounting bracket (2) also includes a battery pack inner plate reinforcing plate (270), which is attached to the inner side of the battery pack inner plate (220) and the two together form the bracket cavity (6). The battery pack outer plate (210), the battery pack inner plate (220), the battery pack outer plate reinforcing plate (230) and the battery pack inner plate reinforcing plate (270) cooperate to form the mounting ear (201).
6. The battery pack side mount structure assembly of claim 3, wherein, The bracket cavity (6) between the outer plate (210) of the battery pack and the reinforcing plate (230) of the outer plate of the battery pack is used as the first bracket cavity (6). A wave-shaped first concave-convex structure (9) extending in the front-back direction is formed on the reinforcing plate (230) of the outer plate of the battery pack, so as to change the width of the first bracket cavity (6) in the front-back direction.
7. The battery pack side mount structure assembly of claim 5, wherein, The bracket cavity (6) between the inner plate (220) of the battery pack and the reinforcing plate (270) of the inner plate of the battery pack is used as the second bracket cavity (6). A wave-shaped second concave-convex structure (10) extending in the front-back direction is formed on the reinforcing plate (270) of the inner plate of the battery pack, so as to change the width of the second bracket cavity (6) in the front-back direction.
8. The battery pack side mount structure assembly of claim 1, wherein, The vehicle sill beam (1) includes a side outer panel (110), a side reinforcing plate (120), and a floor sill beam (130) arranged sequentially from the outside to the inside. A side sill beam (140) is supported and connected between the side reinforcing plate (120) and the floor sill beam (130). A plurality of sill beam support plates (141) are provided inside the side sill beam (140). The sill beam support plates (141) divide the inner cavity of the side sill beam (140) into a plurality of first sill beam cavities (142) and a plurality of second sill beam cavities (143). The cross-section of the first sill beam cavity (142) is triangular or right trapezoidal, and the cross-section of the second sill beam cavity (143) is square.
9. The battery pack side mount structure assembly of claim 8, wherein, The outer side of the side sill beam (140) and the side reinforcing plate (120) are respectively provided with corresponding external mounting holes, and the inner side of the side sill beam (140) and the floor sill beam (130) are respectively provided with corresponding internal mounting holes. The side sill beam (140) is provided with a plurality of electrophoresis hole groups. Each electrophoresis hole group includes two first electrophoresis holes (101) that are connected inside and out. In the same electrophoresis hole group, one of the first electrophoresis holes (101) is aligned with the external mounting hole on the side sill beam (140), and the other first electrophoresis hole (101) is offset from the external mounting hole on the side sill beam (140) in the front-back direction. The side reinforcement plate (120) has a second electrophoresis hole (102) that runs through the inside and outside. The second electrophoresis hole (102) and the external mounting hole on the side reinforcement plate (120) are offset in the front-back direction.
10. A vehicle characterized by comprising: Includes the battery pack side mounting structure assembly as described in any one of claims 1-9.