Anti-collision structure of power storage battery pack

Abstract

The utility model discloses and provides an anti-collision structure of a power storage battery pack, which enhances the lateral anti-collision strength of the anti-collision structure of the longitudinally arranged power storage battery pack by optimizing the stress supporting structure of an anti-collision beam, the connecting stress structure of the anti-collision beam and the structure of a power storage battery pack bracket. The transverse stress supporting structure is additionally arranged in the middle of the anti-collision beam, meanwhile, the structures, connected with the vehicle body framework cross beam, of the two ends of the anti-collision beam are designed to be oblique angle structures, the strength of the transverse stress structure is obviously improved, and meanwhile the transverse stress beam is additionally arranged for optimizing and adjusting the structure. The battery anti-collision device comprises a battery anti-collision frame and a movable anti-collision beam, the battery anti-collision frame comprises an anti-collision beam fixing frame and a support fixing frame, the anti-collision beam fixing frame and the support fixing frame are connected and matched with each other, the movable anti-collision beam is fixed to the anti-collision beam fixing frame in a limited mode, and a plurality of power storage battery packs are arranged on the anti-collision beam fixing frame in a limited and matched mode. And the bracket fixing frame is fixed in an automobile. The device is applied to the field of power battery protection.

Description

Technical Field

[0001] The utility model is applied to the field of power battery protection, and particularly relates to an anti-collision structure for a power battery pack. Background Art

[0002] Since pure electric tour buses need to reserve a luggage compartment and have a large space at the bottom of the vehicle frame, the power battery pack is generally designed to be arranged in upper and lower layers in the middle and at the tail of the vehicle bottom. As the power battery pack is prone to mechanical damage such as extrusion and puncture when being externally impacted, it may induce thermal runaway of the power battery pack, and then safety problems such as internal fire or even explosion of the power battery pack may occur. Therefore, when the power battery is installed at a relatively low position on the vehicle body, a special anti-collision protection structure generally needs to be designed for the power battery pack. To solve the above problems, the industry generally adopts the solution of installing an anti-collision beam on the outside of the power battery pack. For example, in the utility model patents "CN 220984703 U A New Type of Battery Anti-Collision Beam Structure", "CN210941973 U A Battery Anti-Collision Beam for Buses", and "CN 210309890 U A Battery Anti-Collision Beam Device", both ends of a piece of pipe are installed on both sides of the power battery compartment door through fasteners to act as an anti-collision beam. When the power battery compartment on the side of the vehicle body is impacted, in principle, the anti-collision beam on the outside of the power battery pack will resist the impact and transmit the impact force to the columns or crossbeams connected to both ends of the anti-collision beam. However, this structure is relatively not suitable for the protection of longitudinally arranged power battery packs. Because the opening width of the side compartment door of the longitudinally arranged power battery is relatively large, when the middle position of the anti-collision beam is locally laterally impacted, due to the limited structural strength of the anti-collision beam, the positions of the middle and the connection structures at both ends are prone to fracture. If the impact intensity is relatively high, the anti-collision beam broken from the middle will further squeeze the power battery pack, and even break into two sharp tools and pierce into the inside of the power battery pack, making it more likely to cause thermal runaway of the power battery pack. Based on the above problems, if an anti-collision structure for protecting longitudinally arranged power batteries can be designed, by optimizing the force-bearing support structure of the anti-collision beam, the connection force-bearing structure of the anti-collision beam, and the structure of the power battery pack bracket, the lateral anti-impact strength of the anti-collision structure of the longitudinally arranged power battery pack can be greatly improved. When encountering local lateral impact, the impact force can be dispersed, ensuring that the anti-collision beam will not easily deform or even break in the middle, and reducing the risk of thermal runaway of the power battery pack, then the above problems can be well solved. Summary of the Invention

[0003] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide an anti-collision structure for a power battery pack. By optimizing the force-bearing support structure of the anti-collision beam, the connection force-bearing structure of the anti-collision beam, and the structure of the power battery pack bracket, the lateral anti-collision strength of the anti-collision structure of the longitudinally arranged power battery pack is enhanced. In the present invention, a transverse force-bearing support structure is added in the middle of the anti-collision beam. At the same time, the structural design of the connection between the two ends of the anti-collision beam and the cross beam of the vehicle body frame is an oblique angle structure. Compared with the original vertical connection structure, the strength of the transverse force-bearing structure has been significantly improved. At the same time, the power battery installation bracket is optimized, and the structure is adjusted to increase the transverse force-bearing beam.

[0004] The technical solution adopted by the present utility model is as follows: The present utility model includes a battery anti-collision frame and a movable anti-collision beam. The battery anti-collision frame includes an anti-collision beam fixing frame and a bracket fixing frame. The anti-collision beam fixing frame and the bracket fixing frame are connected and matched with each other. The movable anti-collision beam is limited and fixed on the anti-collision beam fixing frame. A number of power battery packs are limited and matched on the anti-collision beam fixing frame. The bracket fixing frame is fixed inside the vehicle. It can be seen that the battery anti-collision frame is composed of the anti-collision beam fixing frame and the bracket fixing frame. The battery anti-collision frame plays a role in protecting the power battery pack. The anti-collision beam fixing frame plays a role in supporting and limiting the movable anti-collision beam. The movable anti-collision beam plays a role in dispersing the impact force suffered by the battery anti-collision frame. The bracket fixing frame plays a role in fixing the anti-collision beam fixing frame inside the vehicle. The anti-collision beam fixing frame plays a role in supporting and limiting the power battery pack.

[0005] Further, the anti-collision beam fixing frame is jointly composed of a number of side cross beams, a number of middle cross beams, a number of anti-collision beam side connection vertical rods, a number of anti-collision beam upper fixing brackets, and a number of anti-collision beam lower fixing brackets, which are connected and matched with each other. The two ends of the anti-collision beam upper fixing bracket and the anti-collision beam lower fixing bracket are respectively connected and matched with the anti-collision beam side connection vertical rod and the side cross beam. The two ends of the middle cross beam are respectively connected and matched with the anti-collision beam upper fixing bracket and the bracket fixing frame. The two ends of the middle cross beam are respectively connected and matched with the anti-collision beam lower fixing bracket and the bracket fixing frame. One end of the anti-collision beam side connection vertical rod is connected and matched with the bracket fixing frame.

[0006] Further, the movable anti-collision beam includes a movable anti-collision cross beam, a movable anti-collision vertical beam, and a splicing plate. The movable anti-collision cross beam passes through the middle of the movable anti-collision vertical beam and is vertically erected and matched with the movable anti-collision vertical beam. The splicing plate is matched with the erected part of the movable anti-collision cross beam and the movable anti-collision vertical beam by welding.

[0007] Further, a number of fixing holes are evenly arranged on the upper fixing bracket of the anti-collision beam and the lower fixing bracket of the anti-collision beam, and a number of power battery packs are in limit fit with the upper fixing bracket of the anti-collision beam through the fixing holes.

[0008] Further, the anti-collision beam fixing bracket is fixedly fitted with the bracket fixing bracket by welding, and a number of the side cross beams, a number of the middle cross beams, a number of the anti-collision beam side connecting vertical rods, the upper fixing bracket of the anti-collision beam and the lower fixing bracket of the anti-collision beam are all connected and fitted with each other by welding.

[0009] Further, first connection holes are respectively arranged at the upper and lower ends of the movable anti-collision vertical beam, and the movable anti-collision vertical beam is in limit fit with the upper fixing bracket of the anti-collision beam and the lower fixing bracket of the anti-collision beam through the first connection holes. Second connection holes and side fixing brackets are respectively arranged on the left and right sides of the movable anti-collision cross beam, the movable anti-collision cross beam is fixedly fitted with the side fixing bracket through the second connection holes, a third connection hole is arranged on the side fixing bracket, and the side fixing bracket is fixedly fitted with the anti-collision beam side connecting vertical rod through the third connection hole.

[0010] Further, a number of fourth connection holes are evenly arranged on the splicing plate, and the splicing plate is fixedly fitted with the movable anti-collision cross beam through the fourth connection holes. Description of the Drawings

[0011] Figure 1 is the structural view of the present utility model;

[0012] Figure 2 is the exploded structural view of the present utility model;

[0013] Figure 3 is the structural view of the anti-collision beam fixing bracket;

[0014] Figure 4 is the first structural view of the movable anti-collision beam;

[0015] Figure 5 is the second structural view of the movable anti-collision beam. Detailed Embodiments

[0016] Such as Figures 1 to 2As shown in the figure, in this embodiment, the utility model includes a battery anti-collision frame 1 and a movable anti-collision beam 2. The battery anti-collision frame 1 includes an anti-collision beam fixing frame 4 and a bracket fixing frame 5. The anti-collision beam fixing frame 4 and the bracket fixing frame 5 are connected and cooperated with each other. The movable anti-collision beam 2 is limited and fixed on the anti-collision beam fixing frame 4. A number of power battery packs 3 are limited and cooperated on the anti-collision beam fixing frame 4. The bracket fixing frame 5 is fixed inside the vehicle. Thus, it can be seen that the battery anti-collision frame 1 is composed of the anti-collision beam fixing frame 4 and the bracket fixing frame 5. The battery anti-collision frame 1 plays a role in protecting the power battery packs 3. The anti-collision beam fixing frame 4 plays a role in supporting and limiting the movable anti-collision beam 2. The movable anti-collision beam 2 plays a role in dispersing the impact force suffered by the battery anti-collision frame 1. The bracket fixing frame 5 plays a role in fixing the anti-collision beam fixing frame 4 inside the vehicle. The anti-collision beam fixing frame 4 plays a role in supporting and limiting the power battery packs 3.

[0017] As Figure 3 As shown in the figure, in this embodiment, the anti-collision beam fixing frame 4 is jointly composed of a number of side cross beams 10, a number of middle cross beams 11, a number of anti-collision beam side connecting vertical rods 12, a number of anti-collision beam upper fixing brackets 13 and a number of anti-collision beam lower fixing brackets 14 which are connected and cooperated with each other. The two ends of the anti-collision beam upper fixing bracket 13 and the anti-collision beam lower fixing bracket 14 are respectively connected and cooperated with the anti-collision beam side connecting vertical rod 12 and the side cross beam 10. The two ends of the middle cross beam 11 are respectively connected and cooperated with the anti-collision beam upper fixing bracket 13 and the bracket fixing frame 5. The two ends of the middle cross beam 11 are respectively connected and cooperated with the anti-collision beam lower fixing bracket 14 and the bracket fixing frame 5. One end of the anti-collision beam side connecting vertical rod 12 is connected and cooperated with the bracket fixing frame 5. Thus, it can be seen that the platform space formed by the side cross beam 10 and the middle cross beam 11 and the anti-collision beam upper fixing bracket 13 and the anti-collision beam lower fixing bracket 14 plays a role in limiting the power battery packs 3 in the Z-axis direction. A number of the anti-collision beam side connecting vertical rods 12 play a role in supporting and limiting the side cross beam 10, the middle cross beam 11, the anti-collision beam lower fixing bracket 14 and the anti-collision beam upper fixing bracket 13.

[0018] As Figure 4As shown, in this embodiment, the movable anti-collision beam 2 includes a movable anti-collision cross beam 20, a movable anti-collision vertical beam 21 and a splicing plate 22. The movable anti-collision cross beam 20 passes through the middle of the movable anti-collision vertical beam 21 and is perpendicularly erected and matched with the movable anti-collision vertical beam 21. The splicing plate 22 is matched with the erected part of the movable anti-collision cross beam 20 and the movable anti-collision vertical beam 21 by welding. It can be seen that the movable anti-collision cross beam 20 is perpendicularly erected and matched with the movable anti-collision vertical beam 21. When the battery anti-collision frame 1 is subjected to a local lateral impact from the outside, the movable anti-collision cross beam 20 and the movable anti-collision vertical beam 21 can disperse the impact force received to the surrounding, improving the anti-impact performance of the battery anti-collision frame 1. The connecting plate plays a role in limiting the movable anti-collision cross beam 20. At the same time, the movable anti-collision vertical beam 21 is connected and matched with the splicing plate 22 by welding, and the welding method can improve the stability of the connection between the movable anti-collision vertical beam 21 and the splicing plate 22.

[0019] As Figures 1 to 3 shown, in this embodiment, a number of fixing holes 99 are evenly arranged on the upper fixing bracket 13 of the anti-collision beam and the lower fixing bracket 14 of the anti-collision beam. A number of power battery packs 3 are in limit cooperation with the upper fixing bracket 13 of the anti-collision beam through the fixing holes 99. It can be seen that the power battery pack 3 is fixedly matched with the upper fixing bracket 13 of the anti-collision beam by screwing with the fixing holes 99, and the fixing holes 99 play a role in connecting and limiting the power battery pack 3 and the upper fixing bracket 13 of the anti-collision beam.

[0020] As Figures 1 to 3 shown, in this embodiment, the anti-collision beam fixing frame 4 is fixedly matched with the bracket fixing frame 5 by welding. A number of the side cross beams 10, a number of the middle cross beams 11, a number of the anti-collision beam side connecting vertical rods 12, the upper fixing bracket 13 of the anti-collision beam and the lower fixing bracket 14 of the anti-collision beam are all connected and matched with each other by welding. It can be seen that the battery anti-collision frame 1 can improve the stability of the connection by connecting and matching with each other by welding. The welding method can form a larger contact area on the connection surface, obtaining better firmness and anti-fracture ability.

[0021] As Figures 4 to 5As shown, in this embodiment, first connection holes 210 are respectively provided at the upper and lower ends of the movable anti-collision vertical beam 21. The movable anti-collision vertical beam 21 is in limiting cooperation with the upper fixed bracket 13 and the lower fixed bracket 14 of the anti-collision beam through the first connection holes 210. Second connection holes 200 and side fixed brackets 23 are respectively provided on the left and right sides of the movable anti-collision cross beam 20. The movable anti-collision cross beam 20 is fixedly cooperated with the side fixed brackets 23 through the second connection holes 200. Third connection holes 202 are provided on the side fixed brackets 23. The side fixed brackets 23 are fixedly cooperated with the anti-collision beam side connecting vertical rods 12 through the third connection holes 202. Thus, it can be seen that the movable anti-collision vertical beam 21 is fixedly cooperated with the movable anti-collision cross beam 20 through screws in threaded cooperation with the first connection holes 210.

[0022] As Figure 4 and Figure 5 shown, in this embodiment, a number of fourth connection holes 220 are uniformly provided on the splicing plate 22. The splicing plate 22 is fixedly cooperated with the movable anti-collision cross beam 20 through the fourth connection holes 220. Thus, it can be seen that the splicing plate 22 is fixedly cooperated with the movable anti-collision cross beam 20 through screws in threaded cooperation with the fourth connection holes 220. The fourth connection holes 220 play a role in connecting and limiting the splicing plate 22 and the movable anti-collision cross beam 20.

[0023] In this embodiment, the working principle of the present utility model is as follows:

[0024] As Figures 1 to 5 shown, when the battery anti-collision frame 1 is subjected to a local lateral impact from the outside, the movable anti-collision beam 2 disperses the lateral impact force received through the movable anti-collision cross beam 20 and the movable anti-collision vertical beam 21 in all directions, preventing the impact force from being too concentrated and causing the movable anti-collision beam 2 to deform or even break into two sharp tools that pierce into the power battery pack 3 and cause thermal runaway.

[0025] Although the embodiments of the present utility model are described with actual solutions, they do not constitute a limitation on the meaning of the present utility model. For those skilled in the art, modifications to its implementation solutions according to this specification and combinations with other solutions are obvious.

Claims

1. A power battery pack anti-collision structure, characterized in that: The invention comprises a battery anti-collision frame (1) and a movable anti-collision beam (2); the battery anti-collision frame (1) comprises an anti-collision beam fixing frame (4) and a bracket fixing frame (5); the anti-collision beam fixing frame (4) and the bracket fixing frame (5) are connected and matched with each other; the movable anti-collision beam (2) is limitedly fixed on the anti-collision beam fixing frame (4); the upper limit position of the anti-collision beam fixing frame (4) is matched with a plurality of power storage battery packs (3); and the bracket fixing frame (5) is fixed in the vehicle.

2. The anti-collision structure of a power battery pack according to claim 1, characterized in that: The anti-collision beam fixing frame (4) is composed of a plurality of side cross beams (10), a plurality of middle cross beams (11), a plurality of anti-collision beam side connecting vertical rods (12), a plurality of anti-collision beam upper fixing brackets (13) and a plurality of anti-collision beam lower fixing brackets (14) which are connected and matched with each other. The two ends of the anti-collision beam upper fixing bracket (13) and the anti-collision beam lower fixing bracket (14) are respectively connected and matched with the anti-collision beam side connecting vertical rods (12) and the side cross beams (10). The two ends of the middle cross beam (11) are respectively connected and matched with the anti-collision beam upper fixing bracket (13) and the bracket fixing frame (5). The two ends of the middle cross beam (11) are respectively connected and matched with the anti-collision beam lower fixing bracket (14) and the bracket fixing frame (5). One end of the anti-collision beam side connecting vertical rod (12) is connected and matched with the bracket fixing frame (5).

3. The anti-collision structure of a power battery pack according to claim 2, characterized in that: The movable anti-collision beam (2) comprises a movable anti-collision cross beam (20), a movable anti-collision vertical beam (21) and a splicing plate (22); the movable anti-collision cross beam (20) passes through the middle of the movable anti-collision vertical beam (21) and is vertically constructed to cooperate with the movable anti-collision vertical beam (21); the movable anti-collision cross beam (20) and the movable anti-collision vertical beam (21) are welded to cooperate with the splicing plate (22) at the construction point.

4. The anti-collision structure of a power battery pack according to claim 2, characterized in that: A plurality of fixing holes (99) are evenly arranged on the anti-collision beam upper fixing bracket (13) and the anti-collision beam lower fixing bracket (14), and a plurality of power storage battery packs (3) are limitedly matched with the anti-collision beam upper fixing bracket (13) through the fixing holes (99).

5. The anti-collision structure of a power battery pack according to claim 2, characterized in that: The anti-collision beam fixing frame (4) is fixedly matched with the bracket fixing frame (5) by welding, and the plurality of side cross beams (10), the plurality of middle cross beams (11), the plurality of side connecting vertical rods (12) of the anti-collision beam, the upper fixing bracket (13) of the anti-collision beam and the lower fixing bracket (14) of the anti-collision beam are all connected and matched with each other by welding.

6. The anti-collision structure of a power battery pack according to claim 3, characterized in that: The movable anti-collision vertical beam (21) is provided with first connection holes (210) at the upper and lower ends respectively. The movable anti-collision vertical beam (21) is respectively limitedly matched with the anti-collision beam upper fixing bracket (13) and the anti-collision beam lower fixing bracket (14) through the first connection holes (210). The movable anti-collision cross beam (20) is respectively provided with second connection holes (200) and side fixing brackets (23) at the left and right sides. The movable anti-collision cross beam (20) is fixedly matched with the side fixing bracket (23) through the second connection holes (200). The side fixing bracket (23) is provided with third connection holes (202). The side fixing bracket (23) is fixedly matched with the anti-collision beam side connecting vertical rod (12) through the third connection holes (202).

7. The anti-collision structure of a power battery pack according to claim 3, characterized in that: A plurality of fourth connection holes (220) are evenly arranged on the splicing plate (22), and the splicing plate (22) is fixedly matched with the movable anti-collision beam (20) through the fourth connection holes (220).

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