Safety anti-collision chassis with multiple protective energy-absorbing rings

Abstract

The utility model relates to a safe anticollision chassis with multiple protection energy -absorbing rings, including front frame, front floor frame and rear floor frame, the front frame with battery pack is installed in the front floor frame, the front main energy -absorbing ring is formed in the front frame, and the front main energy -absorbing ring includes 7 main energy -absorbing ring expansion ring, and the front floor protection ring is formed in the front floor frame, and the rear energy -absorbing ring, rear buffer energy -absorbing ring and rear protection ring are formed in the rear floor frame, and the utility model has the advantages of good energy -absorbing effect, good protection performance and high safety.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, specifically to a safety anti-collision chassis with multiple protective energy-absorbing rings. Background Technology

[0002] With the rapid development of new energy vehicles, the importance of chassis structure design in improving vehicle active safety is becoming increasingly prominent. Compared with traditional fuel vehicles, new energy vehicles, due to their large-mass battery packs, require their chassis to withstand higher loads and provide more effective energy absorption and protection in collisions. However, in existing technologies, many new energy vehicle chassis frames still follow the design concepts of traditional fuel vehicles, failing to fully consider the synergistic optimization of the battery pack and chassis structure. This results in insufficient energy absorption efficiency and inadequate rigidity during collisions, leading to safety hazards such as battery pack compression deformation and passenger compartment intrusion, seriously threatening the safety of passengers. Summary of the Invention

[0003] The purpose of this invention is to provide a safety anti-collision chassis with multiple protective energy-absorbing rings, which has good energy absorption effect, good protection performance and high safety.

[0004] A safety anti-collision chassis with multiple protective energy-absorbing rings includes a front frame, a front floor frame and a rear floor frame, wherein a battery pack is installed in the front frame and the front floor frame; A front main energy-absorbing ring is formed within the front frame, and the front main energy-absorbing ring includes 7 main energy-absorbing extension rings; A front floor protection ring is formed within the front floor frame; The rear floor frame contains a rear energy-absorbing ring, a rear buffer energy-absorbing ring, and a rear protective ring.

[0005] In the above scheme, the front main energy-absorbing ring formed within the front frame can effectively absorb collision energy in a frontal collision. The seven main energy-absorbing extension rings work together to effectively protect the battery pack and occupant protection zone. The front floor protection ring can reduce occupant compartment deformation and prevent battery pack compression. It can effectively play a protective role in frontal, rear, and side collisions. The rear energy-absorbing ring, rear buffer energy-absorbing ring, and rear protection ring formed within the rear floor frame work together to achieve the maximum energy absorption effect in a rear-end collision, effectively protecting the occupants and battery pack. The front main energy-absorbing ring, front floor protection ring, rear energy-absorbing ring, rear buffer energy-absorbing ring, and rear protection ring combine rigidity and flexibility, working together to form a safe anti-collision chassis with multiple energy-absorbing and protective rings. The energy absorption effect is good, and the safety of the battery and occupants is effectively protected.

[0006] Furthermore, the front frame includes a front bumper beam, a left front energy-absorbing box, a left upper longitudinal beam, a left front wheel arch, a left A-pillar inner panel, a left front longitudinal beam, and a first connecting plate connected sequentially to the front bumper beam, a right front energy-absorbing box, a right upper longitudinal beam, a right front wheel arch, a right A-pillar inner panel, a first connecting plate, a right front longitudinal beam, a second connecting plate, and a front subframe connected sequentially to the front bumper beam, and battery mounting holes are provided at the rear of both the left and right front longitudinal beams for mounting battery packs.

[0007] Furthermore, the front subframe includes a front subframe front crossbeam, a front subframe rear crossbeam, a battery protection beam, a front subframe left longitudinal beam, and a front subframe right longitudinal beam, with the battery protection beam located in front of the battery pack.

[0008] In the above scheme, the battery protection beam at the front of the battery pack can effectively protect the battery pack in the event of a frontal collision.

[0009] Furthermore, the front main energy-absorbing ring is composed of the left front energy-absorbing box, the left front longitudinal beam, the battery protection beam, the right front longitudinal beam, and the right front energy-absorbing box connected in sequence. The seven main energy-absorbing expansion rings are the first main energy-absorbing expansion ring, the second main energy-absorbing expansion ring, the third main energy-absorbing expansion ring, the fourth main energy-absorbing expansion ring, the fifth main energy-absorbing expansion ring, the first front auxiliary energy-absorbing ring, and the second front auxiliary energy-absorbing ring.

[0010] In the above scheme, the second main energy-absorbing extension ring first plays an energy-absorbing role during the collision. The first, third, and fifth main energy-absorbing extension rings work together to further absorb the collision energy. The fourth main energy-absorbing extension ring achieves the maximum energy absorption effect, effectively protecting the safety of the rear battery pack and the occupant protection zone. The first and second front auxiliary energy-absorbing rings play an auxiliary energy-absorbing role during the frontal collision, reducing the damage caused by the frontal collision.

[0011] Furthermore, the front floor frame includes a central channel reinforcing plate, a third connecting plate, a fourth connecting plate, a first crossbeam, a second crossbeam, a third crossbeam, a fourth crossbeam, a fifth crossbeam, a left sill inner plate, a right sill inner plate, a left front floor beam, and a right front floor beam. The third connecting plate, the fourth connecting plate, the left front floor beam, and the right front floor beam are all provided with battery mounting holes for installing battery packs.

[0012] In the above scheme, both the inner panels of the left and right sills are equipped with side anti-collision beams. The inner panels of the left and right sills and the side anti-collision beams inside them can effectively protect the battery in the event of a side collision.

[0013] Furthermore, the front floor protection ring includes a left front floor protection safety ring and a right front floor protection safety ring, and the left front floor anti-slip safety ring and the right front floor protection safety ring are symmetrically distributed along the central channel reinforcement plate.

[0014] Furthermore, the left anti-slip safety ring and the right protective safety ring of the front floor each include 6 protective safety rings.

[0015] In the above scheme, the six protective safety rings of the anti-slip safety ring on the left side of the front floor and the six protective safety rings of the protective safety ring on the right side of the front floor are all 3x2 rigid rings, forming an interlocking structure to form a ring-shaped occupant and battery protection zone, reducing occupant compartment deformation and preventing battery pack compression. It can effectively play a protective role in frontal, rear and side collisions.

[0016] Furthermore, the rear floor frame includes a left rear longitudinal beam, a right rear longitudinal beam, a rear anti-collision beam, a left rear energy-absorbing box, a first rear floor under-beam, a second rear floor under-beam, a left reinforcing protective beam, and a right reinforcing protective beam.

[0017] In the above design, the left and right reinforcing protective beams are located behind the battery pack, which can effectively protect the battery pack in the event of a frontal or rearal collision.

[0018] Furthermore, the rear energy-absorbing ring is formed by the second rear floor under-beam, the left rear longitudinal beam, the left rear energy-absorbing box, the rear anti-collision beam, the right rear energy-absorbing box, and the right rear longitudinal beam; the rear buffer energy-absorbing ring is formed by the first rear floor under-beam, the left rear longitudinal beam, the second rear floor under-beam, and the right rear longitudinal beam; and the rear protective ring is formed by the fifth crossbeam, the left rear longitudinal beam, the first rear floor under-beam, and the right rear longitudinal beam.

[0019] Furthermore, the rear buffer energy-absorbing ring includes a first rear buffer energy-absorbing extension ring, a second rear buffer energy-absorbing extension ring, and a third rear buffer energy-absorbing extension ring.

[0020] In the above scheme, in the event of a rear impact, the rear energy-absorbing ring first plays an energy-absorbing role. The rear energy-absorbing buffer ring, under the synergistic effect of the first rear buffer energy-absorbing extension ring, the second rear buffer energy-absorbing extension ring and the third rear buffer energy-absorbing extension ring, further absorbs the collision energy and obtains the maximum energy absorption effect behind the rear protective ring, effectively protecting the safety of the occupants and the battery.

[0021] This utility model discloses a safety crash chassis with multiple protective energy-absorbing rings, which has the beneficial effects of good energy absorption, good protective performance, and high safety. The main energy-absorbing ring formed in the front frame can effectively absorb collision energy in a frontal collision. The seven main energy-absorbing extension rings work together to effectively protect the battery pack and the occupant protection zone. The front floor protection ring can reduce the deformation of the occupant compartment and prevent the battery pack from being crushed. It can effectively play a protective role in frontal, rear, and side collisions. The rear energy-absorbing ring, rear buffer energy-absorbing ring, and rear protection ring formed in the rear floor frame work together to achieve the maximum energy absorption effect in a rear-end collision, effectively protecting the occupants and the battery pack. The front main energy-absorbing ring, front floor protection ring, rear energy-absorbing ring, rear buffer energy-absorbing ring, and rear protection ring combine rigidity and flexibility, work together to form a safety crash chassis with multiple energy-absorbing protective rings, with good energy absorption effect, and the battery and occupant safety are effectively protected. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a safety anti-collision chassis according to one embodiment.

[0023] Figure 2 This is a schematic diagram of the energy-absorbing ring of a safety anti-collision chassis according to one embodiment.

[0024] Figure 3 This is a schematic diagram of the front frame of one embodiment.

[0025] Figure 4 This is a schematic diagram of the front main energy-absorbing ring of the front frame in one embodiment.

[0026] Figure 5 This is a schematic diagram of the front floor frame of one embodiment.

[0027] Figure 6 This is a schematic diagram of a front floor protection ring within the front floor frame of one embodiment.

[0028] Figure 7 This is a schematic diagram of the rear floor frame of one embodiment.

[0029] Figure 8 This is a schematic diagram of a rear energy-absorbing ring, a rear buffer energy-absorbing ring, and a rear protective ring according to one embodiment.

[0030] The following diagram numbers are explained: 101. Front bumper beam; 102. Left front energy absorption box; 103. Right front energy absorption box; 104. Left upper longitudinal beam; 105. Right upper longitudinal beam; 106. Left front wheel arch; 107. Right front wheel arch; 108. Left A-pillar inner panel; 109. Right A-pillar inner panel; 110. Left front longitudinal beam; 111. Right front longitudinal beam; 112. First connecting plate; 113. Second connecting plate; 114. Front subframe; 1141. Front subframe front crossbeam; 1142. Front subframe rear crossbeam; 1143. Battery protection beam; 1144. Front subframe left longitudinal beam; 1145. Front subframe right longitudinal beam. 1. Front main energy-absorbing ring; 11. First main energy-absorbing extension ring; 12. Second main energy-absorbing extension ring; 13. Third main energy-absorbing extension ring; 14. Fourth main energy-absorbing extension ring; 15. Fifth main energy-absorbing extension ring; 16. First front secondary energy-absorbing ring; 17. Second front secondary energy-absorbing ring; 2. Front floor protective ring; 201. Central channel reinforcing plate; 202. Third connecting plate; 203. Fourth connecting plate; 204. First crossbeam; 205. Second crossbeam; 206. Third crossbeam; 207. Fourth crossbeam; 208. Fifth crossbeam; 209. Left sill inner panel; 210. Right sill inner panel; 211. Front floor left side beam; 212. Front floor right side beam; 301. Left rear longitudinal beam; 302. Right rear longitudinal beam; 303. Rear bumper beam; 304. Left rear energy-absorbing box; 305. Right rear energy-absorbing box; 306. First rear floor underpass beam; 307. Second rear floor underpass beam; 308. Left reinforcing protective beam; 309. Right reinforcing protective beam; 3. Rear energy-absorbing ring; 4. Rear buffer energy-absorbing ring; 41. First rear buffer energy-absorbing extension ring; 42. Second rear buffer energy-absorbing extension ring; 43. Third rear buffer energy-absorbing extension ring; 5. Rear protective ring. Detailed Implementation

[0031] The following will describe in further detail a safety anti-collision chassis with multiple protective energy-absorbing rings according to specific embodiments and accompanying drawings.

[0032] like Figures 1 to 8As shown in a preferred embodiment, the present invention provides a safety anti-collision chassis with multiple protective energy-absorbing rings, including a front frame, a front floor frame, and a rear floor frame. A battery pack is installed in the front frame and the front floor frame. A front main energy-absorbing ring 1 is formed in the front frame, and the front main energy-absorbing ring 1 includes 7 main energy-absorbing extension rings. A front floor protective ring 2 is formed in the front floor frame. A rear energy-absorbing ring 3, a rear buffer energy-absorbing ring 4, and a rear protective ring 5 are formed in the rear floor frame. The front main energy-absorbing ring 1 formed within the front frame effectively absorbs collision energy in a frontal collision. The seven main energy-absorbing extension rings work together to effectively protect the battery pack and occupant protection zone. The front floor protection ring 2 reduces occupant compartment deformation and prevents battery pack compression. It provides effective protection in frontal, rear, and side collisions. The rear energy-absorbing ring 3, rear buffer energy-absorbing ring 4, and rear protection ring 5 formed within the rear floor frame work together to achieve maximum energy absorption in a rear-end collision, effectively protecting the occupants and battery pack. The front main energy-absorbing ring 1, front floor protection ring 2, rear energy-absorbing ring 3, rear buffer energy-absorbing ring 4, and rear protection ring 5 combine rigidity and flexibility, working together to prevent the battery pack from being compressed and deformed during frontal, rear, and side collisions of electric vehicles. Together, they form a safe anti-collision chassis with multiple energy-absorbing protection rings, providing excellent energy absorption and effectively protecting the battery and occupants.

[0033] like Figure 3 and Figure 4 As shown, in some embodiments, the front frame includes a front bumper beam 101, a left front energy-absorbing box 102, a left upper longitudinal beam 104, a left front wheel arch 106, a left A-pillar inner panel 108, a left front longitudinal beam 110, and a first connecting plate 112 connected in sequence to the front bumper beam 101, a right front energy-absorbing box 103, a right upper longitudinal beam 105, a right front wheel arch 107, a right A-pillar inner panel 109, a second connecting plate 113, a right front longitudinal beam 111, and a front subframe 114 connected in sequence to the front bumper beam 101, and battery mounting holes are provided at the rear of both the left front longitudinal beam 110 and the right front longitudinal beam 111 for mounting battery packs.

[0034] like Figure 3 and Figure 4 As shown, in some embodiments, the front subframe 114 includes a front subframe front crossbeam 1141, a front subframe rear crossbeam 1142, a battery protection beam 1143, a front subframe left longitudinal beam 1144, and a front subframe right longitudinal beam 1145. The battery protection beam 1143 is located in front of the battery pack. The battery protection beam 1143 in front of the battery pack can effectively protect the battery pack in the event of a frontal collision.

[0035] like Figure 3 and Figure 4As shown, in some embodiments, the front main energy-absorbing ring 1 is composed of a left front energy-absorbing box 102, a left front longitudinal beam 110, a battery protection beam 1143, a right front longitudinal beam 111, and a right front energy-absorbing box 103 connected in sequence. The seven main energy-absorbing expansion rings are the first main energy-absorbing expansion ring 11, the second main energy-absorbing expansion ring 12, the third main energy-absorbing expansion ring 13, the fourth main energy-absorbing expansion ring 14, the fifth main energy-absorbing expansion ring 15, the first front secondary energy-absorbing ring 16, and the second front secondary energy-absorbing ring 17.

[0036] Specifically, the second main energy-absorbing extension ring 12 first plays an energy-absorbing role during the collision. Subsequently, the first main energy-absorbing extension ring 11, the third main energy-absorbing extension ring 13, and the fifth main energy-absorbing extension ring 15 work together to further absorb the collision energy. The maximum energy absorption effect is achieved at the fourth main energy-absorbing extension ring 14, which effectively protects the safety of the rear battery pack and the occupant protection zone. The first front auxiliary energy-absorbing ring 16 and the second front auxiliary energy-absorbing ring 17 play an auxiliary energy-absorbing role during the frontal collision, reducing the damage caused by the frontal collision.

[0037] In the above embodiment, the first front main energy-absorbing ring 1 expansion ring is formed by the front subframe front crossbeam 1141, the front subframe left longitudinal beam 1144, the front subframe rear crossbeam 1142, and the front subframe right longitudinal beam 1145; the second front main energy-absorbing ring 1 expansion ring is formed by the front bumper beam 101, the left front energy-absorbing box 102, the front subframe front crossbeam 1141, and the right front energy-absorbing box 103; the third front main energy-absorbing ring 1 expansion ring is formed by the front subframe left longitudinal beam 1144, the left front longitudinal beam 110, and the battery protection beam 1143; the fourth front main energy-absorbing ring 1 expansion ring is formed by the front subframe rear crossbeam 1142, the front subframe left crossbeam 1145, the front subframe left crossbeam 1146, the front subframe left crossbeam 1147, the front subframe rear crossbeam 1148, the front subframe left crossbeam 1149, the front subframe left crossbeam 1140, the front subframe right crossbeam 1145, and the front subframe right crossbeam 1146. The fifth front main energy-absorbing ring 1 is formed by the right longitudinal beam 1144, the battery protection beam 1143, and the right longitudinal beam 1145 of the front subframe; the fifth front main energy-absorbing ring 1 is formed by the right longitudinal beam 1145 of the front subframe, the right front longitudinal beam 111, and the battery protection beam 1143; the first front secondary energy-absorbing ring is formed by the left front energy-absorbing box 102, the left front longitudinal beam 110, the first connecting plate 112, the left A-pillar inner plate 108, the left front wheel cover 106, and the left upper longitudinal beam 104; the second front secondary energy-absorbing ring is formed by the right front energy-absorbing box 103, the right front longitudinal beam 111, the second connecting plate 113, the right A-pillar inner plate 109, the right front wheel cover 107, and the right upper longitudinal beam 105.

[0038] like Figure 5 and Figure 6As shown, in some embodiments, the front floor frame includes a central channel reinforcing plate 201, a third connecting plate 202, a fourth connecting plate 203, a first crossbeam 204, a second crossbeam 205, a third crossbeam 206, a fourth crossbeam 207, a fifth crossbeam 208, a left sill inner plate 209, a right sill inner plate 210, a left front floor beam 211, and a right front floor beam 212. Battery mounting holes are provided on the third connecting plate 202, the fourth connecting plate 203, the left front floor beam 211, and the right front floor beam for mounting battery packs. Side impact beams are provided inside the left sill inner plate 209 and the right sill inner plate 210, and these side impact beams effectively protect the battery in the event of a side impact.

[0039] like Figure 5 and Figure 6 As shown, in some embodiments, the front floor protection ring 2 includes a left front floor protection safety ring and a right front floor protection safety ring, which are symmetrically distributed along the central channel reinforcement plate 201.

[0040] like Figure 5 and Figure 6 As shown, in some embodiments, the left-side anti-slip safety ring and the right-side protective safety ring of the front floor each include six protective safety rings. The six protective safety rings of both the left-side and right-side anti-slip safety rings are 3x2 rigid rings, formed by the perpendicular intersection of three sets of longitudinal beams and four sets of transverse beams, respectively, creating an interlocking structure that forms a ring-shaped occupant and battery protection zone. This reduces occupant compartment deformation and prevents battery pack compression, effectively providing protection in frontal, rear, and side impacts.

[0041] In the above embodiment, the left protective safety ring of the front floor is composed of the inner plate 108 of the left A-pillar, the inner plate 209 of the left sill, the rear part of the left front longitudinal beam 110, the left side beam 211 of the front floor, and the left side of the central channel reinforcement plate 201; the four sets of transverse beams are: the fourth connecting plate 203, the third transverse beam 206, the fourth transverse beam 207, and the left part of the fifth transverse beam 208. The right protective safety ring of the front floor is composed of the inner plate 109 of the right A-pillar, the inner plate 210 of the right sill, the rear part of the right front longitudinal beam 111, the right side beam 212 of the front floor, and the right side of the central channel reinforcement plate 201; the four sets of transverse beams are: the third connecting plate 202, the first transverse beam 204, the second transverse beam 205, and the right part of the fifth transverse beam 208.

[0042] like Figure 7 and Figure 8As shown, in some embodiments, the rear floor frame includes a left rear longitudinal beam 301, a right rear longitudinal beam 302, a rear anti-collision beam 303, a left rear energy-absorbing box 304, a first rear floor under-beam 306, a second rear floor under-beam 307, a left reinforcing protective beam 308, and a right reinforcing protective beam 309. The left reinforcing protective beam 308 and the right reinforcing protective beam 309 are located behind the battery pack and can effectively protect the battery pack in the event of a frontal or rearal collision.

[0043] In the above embodiment, the cross-sections of the left rear longitudinal beam 301 and the right rear longitudinal beam 302 are both upward-opening zigzag structures, which can increase the effective cross-sections of the left rear longitudinal beam 301 and the right rear longitudinal beam 302, improve the stiffness and strength of the left rear longitudinal beam 301 and the right rear longitudinal beam 302 components, and improve the rear impact load capacity; due to the adoption of the zigzag structure, this structure plays a positive role in the lightweighting of automobiles.

[0044] The first rear floor under-floor crossbeam 306 is connected to the left rear longitudinal beam 301, and the first rear floor under-floor crossbeam 306 is connected to the right rear longitudinal beam 302. Both are equipped with upward-facing Z-shaped reinforcing members to enhance the connection rigidity between the first rear floor under-floor crossbeam 306 and the left and right rear longitudinal beams 301 and 302. The cross section of the first rear floor under-floor crossbeam 306 is an upward-facing Z-shaped structure, which can increase the effective cross section and improve the rigidity. Due to the Z-shaped structure, this structure plays a positive role in the lightweighting of automobiles.

[0045] The connection points between the second rear floor under-beam 307 and the left rear longitudinal beam 301, as well as the connection points between the second rear floor under-beam 307 and the right rear longitudinal beam 302, are equipped with upward-facing Z-shaped reinforcing members to enhance the connection rigidity between the second rear floor under-beam and the left and right rear longitudinal beams 301 and 302. The cross-section of the second rear floor under-beam 307 is an upward-facing Z-shaped structure, which increases the effective cross-section and improves rigidity. This Z-shaped structure plays a positive role in the lightweighting of automobiles.

[0046] Two battery mounting brackets, specifically triangular connectors, are provided on the lower surface of the first rear floor underbeam 306 to enhance the connection strength between the battery pack and the first rear floor underbeam 306.

[0047] The left reinforcing protective beam 308 and the right reinforcing protective beam 309 are symmetrically distributed. Both the left reinforcing protective beam 308 and the right reinforcing protective beam 309 are diagonal bracing structures. The cross-sections of the left reinforcing protective beam 308 and the right reinforcing protective beam 309 are both upward-facing "Z"-shaped structures. The diagonal support and "Z"-shaped structure of the left reinforcing protective beam 308 and the right reinforcing protective beam 309 can effectively enhance the rigidity of the rear floor. The buffer space between the left reinforcing protective beam 308 and the right reinforcing protective beam 309 and the first rear floor underbeam 306 can enhance the protection of the battery pack.

[0048] like Figure 7 and Figure 8 As shown, in some embodiments, the rear energy-absorbing ring 3 is formed by the second rear floor underbeam 307, the left rear longitudinal beam 301, the left rear energy-absorbing box 304, the rear anti-collision beam 303, the right rear energy-absorbing box 305, and the right rear longitudinal beam 302; the rear buffer energy-absorbing ring 4 is formed by the first rear floor underbeam 306, the left rear longitudinal beam 301, the second rear floor underbeam 307, and the right rear longitudinal beam 302; and the rear protective ring 5 is formed by the fifth crossbeam 208, the left rear longitudinal beam 301, the first rear floor underbeam 306, and the right rear longitudinal beam 302.

[0049] like Figure 7 and Figure 8 As shown, in some embodiments, the rear buffer energy-absorbing ring 4 includes a first rear buffer energy-absorbing extension ring 41, a second rear buffer energy-absorbing extension ring 42, and a third rear buffer energy-absorbing extension ring 43. In a rear-end collision, the rear energy-absorbing ring 3 first absorbs energy. The rear energy-absorbing buffer ring, under the synergistic effect of the first rear buffer energy-absorbing extension ring 41, the second rear buffer energy-absorbing extension ring 42, and the third rear buffer energy-absorbing extension ring 43, further absorbs the collision energy, achieving maximum energy absorption behind the rear protective ring 5, effectively protecting the safety of the occupants and the battery.

[0050] In the above embodiment, the first rear buffer energy absorption expansion ring 41 is formed by the first rear floor underbeam 306, the left rear longitudinal beam 301, the left reinforcing protective beam 308, the second rear floor underbeam 307, the right reinforcing protective beam 309, and the right rear longitudinal beam 302; the second rear buffer energy absorption expansion ring 42 is formed by the left rear longitudinal beam 301, the left reinforcing protective beam 308, and the second rear floor underbeam 307; and the third rear buffer energy absorption expansion ring 43 is formed by the right rear longitudinal beam 302, the right reinforcing protective beam 309, and the second rear floor underbeam 307.

[0051] In the above embodiments, buffer spaces are provided around the battery pack. Specifically, buffer spaces are provided at the battery protection beam 1143 and the front end of the battery pack, which can effectively prevent the battery pack from being squeezed in a frontal collision; buffer spaces are provided between the left reinforcing protective beam 308 and the right reinforcing protective beam 309 and the first rear floor underpass beam 306, which can effectively prevent the battery pack from being squeezed in a rearal collision; safe buffer distances are provided between both sides of the battery pack and the inner panels of the left and right door sills 209 and 210, which can effectively prevent the battery pack from being squeezed in a side collision.

[0052] This utility model discloses the working principle and process of a safety anti-collision chassis with multiple protective energy-absorbing rings. In a frontal collision, the second main energy-absorbing extension ring 12 first absorbs energy during the collision. Subsequently, the first main energy-absorbing extension ring 11, the third main energy-absorbing extension ring 13, and the fifth main energy-absorbing extension ring 15 work together to further absorb the collision energy. The fourth main energy-absorbing extension ring 14 achieves the maximum energy absorption effect, effectively protecting the rear battery pack and the occupant protection zone. The first front auxiliary energy-absorbing ring 16 and the second front auxiliary energy-absorbing ring 17 provide auxiliary energy absorption during the frontal collision. In a rearal collision, the rear energy-absorbing ring 3 first absorbs energy. The rear energy-absorbing buffer ring, under the synergistic action of the first rear buffer energy-absorbing extension ring 41, the second rear buffer energy-absorbing extension ring 42, and the third rear buffer energy-absorbing extension ring 43, further absorbs the collision energy, achieving the maximum energy absorption effect behind the rear protective ring 5, effectively protecting the occupants and the battery.

[0053] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A safety anti-collision chassis with multiple protective energy-absorbing rings, characterized in that, It includes a front frame, a front floor frame, and a rear floor frame, with a battery pack installed within the front frame and the front floor frame; A front main energy-absorbing ring is formed within the front frame, and the front main energy-absorbing ring includes 7 main energy-absorbing extension rings; A front floor protection ring is formed within the front floor frame; The rear floor frame contains a rear energy-absorbing ring, a rear buffer energy-absorbing ring, and a rear protective ring.

2. The safety anti-collision chassis with multiple protective energy-absorbing rings according to claim 1, characterized in that, The front frame includes a front bumper beam, a left front energy-absorbing box, a left upper longitudinal beam, a left front wheel arch, a left A-pillar inner panel, a left front longitudinal beam, and a first connecting plate connected in sequence to the front bumper beam, a right front energy-absorbing box, a right upper longitudinal beam, a right front wheel arch, a right A-pillar inner panel, a first connecting plate, a right front longitudinal beam, a second connecting plate, and a front subframe connected in sequence to the front bumper beam, and battery mounting holes are provided at the rear of both the left and right front longitudinal beams for mounting battery packs.

3. The safety anti-collision chassis with multiple protective energy-absorbing rings according to claim 2, characterized in that, The front subframe includes a front crossbeam, a rear crossbeam, a battery protection beam, a left longitudinal beam, and a right longitudinal beam, with the battery protection beam located in front of the battery pack.

4. The safety anti-collision chassis with multiple protective energy-absorbing rings according to claim 3, characterized in that, The front main energy-absorbing ring is composed of the left front energy-absorbing box, the left front longitudinal beam, the battery protection beam, the right front longitudinal beam, and the right front energy-absorbing box connected in sequence. The seven main energy-absorbing expansion rings are the first main energy-absorbing expansion ring, the second main energy-absorbing expansion ring, the third main energy-absorbing expansion ring, the fourth main energy-absorbing expansion ring, the fifth main energy-absorbing expansion ring, the first front auxiliary energy-absorbing ring, and the second front auxiliary energy-absorbing ring.

5. The safety anti-collision chassis with multiple protective energy-absorbing rings according to claim 1, characterized in that, The front floor frame includes a central channel reinforcing plate, a third connecting plate, a fourth connecting plate, a first crossbeam, a second crossbeam, a third crossbeam, a fourth crossbeam, a fifth crossbeam, a left sill inner plate, a right sill inner plate, a left front floor beam, and a right front floor beam. The third connecting plate, the fourth connecting plate, the left front floor beam, and the right front floor beam are all provided with battery mounting holes for installing battery packs.

6. The safety anti-collision chassis with multiple protective energy-absorbing rings according to claim 5, characterized in that, The front floor protection ring includes a left-side protective safety ring and a right-side protective safety ring, which are symmetrically distributed along the central channel reinforcement plate.

7. The safety anti-collision chassis with multiple protective energy-absorbing rings according to claim 1, characterized in that, The anti-slip safety ring on the left side of the front floor and the protective safety ring on the right side of the front floor each include 6 protective safety rings.

8. The safety anti-collision chassis with multiple protective energy-absorbing rings according to claim 5, characterized in that, The rear floor frame includes a left rear longitudinal beam, a right rear longitudinal beam, a rear anti-collision beam, a left rear energy-absorbing box, a first rear floor under-beam, a second rear floor under-beam, a left reinforcing protective beam, and a right reinforcing protective beam.

9. The safety anti-collision chassis with multiple protective energy-absorbing rings according to claim 8, characterized in that, The rear energy-absorbing ring is formed by the second rear floor underbeam, the left rear longitudinal beam, the left rear energy-absorbing box, the rear anti-collision beam, the right rear energy-absorbing box, and the right rear longitudinal beam; the rear buffer energy-absorbing ring is formed by the first rear floor underbeam, the left rear longitudinal beam, the second rear floor underbeam, and the right rear longitudinal beam; the rear protective ring is formed by the fifth crossbeam, the left rear longitudinal beam, the first rear floor underbeam, and the right rear longitudinal beam.

10. The safety anti-collision chassis with multiple protective energy-absorbing rings according to claim 9, characterized in that, The rear buffer energy absorption ring includes a first rear buffer energy absorption extension ring, a second rear buffer energy absorption extension ring, and a third rear buffer energy absorption extension ring.

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