Lower vehicle body battery frame structure and vehicle

Abstract

The utility model discloses a lower vehicle body battery frame structure which comprises a lower vehicle body assembly used for being detachably connected with a battery pack assembly, and installation positions arranged on the lower vehicle body assembly and used for being matched with the battery pack assembly comprise a front installation position, a rear installation position and a side installation position. The multiple front installation positions, the multiple rear installation positions and the multiple side installation positions are arranged. According to the lower vehicle body battery frame structure, the compatibility is improved, and the installation requirements of different battery packs can be met. The utility model further discloses a vehicle.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles. Specifically, the utility model relates to a lower vehicle body battery frame structure and a vehicle. Background Art

[0002] Existing electric vehicles adopt aluminum alloy lower body structures or steel-aluminum hybrid lower body structures, which are characterized by light weight and few parts, but have high costs and poor compatibility. They are mostly developed and applied to high-end models and cannot meet the installation requirements of different battery packs.

[0003] Chinese Patent with Application No. 202222114337.8 discloses a vehicle body structure and a vehicle. The vehicle body structure includes a battery box body and a floor assembly. The battery box body includes a bottom plate and a lower vehicle body frame. The bottom plate and the lower vehicle body frame are integrally formed to surround and form a battery installation groove. The floor assembly is arranged on the top of the battery installation groove, and the floor assembly, the bottom plate and the lower vehicle body frame surround and form a battery installation chamber.

[0004] It is desired to provide an improved lower vehicle body battery frame structure, especially regarding how to achieve compatibility and meet the installation requirements of different battery packs. Summary of the Utility Model

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a lower vehicle body battery frame structure with the aim of improving compatibility.

[0006] To achieve the above object, the technical solution adopted by the utility model is as follows: A lower vehicle body battery frame structure includes a lower vehicle body assembly for forming a detachable connection with a battery pack assembly. The installation positions provided on the lower vehicle body assembly for matching with the battery pack assembly include a front installation position, a rear installation position and a side installation position, and multiple of each of the front installation position, the rear installation position and the side installation position are provided.

[0007] A first through hole for a bolt to pass through is provided at the front installation position. The axis of the first through hole is parallel to the X direction, and all the first through holes are on the same straight line parallel to the Y direction.

[0008] The lower vehicle body assembly includes a first vehicle body cross beam, and the first through hole is provided on the first vehicle body cross beam.

[0009] A second through hole for a bolt to pass through is provided at the rear installation position. The axis of the second through hole is parallel to the X direction, and all the second through holes are on the same straight line parallel to the Y direction.

[0010] The lower vehicle body assembly includes a second vehicle body cross beam, and the second through hole is provided on the second vehicle body cross beam.

[0011] A third through-hole for the bolt to pass through is provided at the side mounting position. The axis of the third through-hole is parallel to the Y direction, and all the third through-holes are on the same straight line parallel to the X direction.

[0012] The lower body assembly includes a vehicle longitudinal beam, and the third through-hole is provided on the vehicle longitudinal beam.

[0013] The present invention also provides a vehicle, including the lower body battery frame structure described above.

[0014] The lower body battery frame structure of the present invention improves compatibility and can meet the installation requirements of different battery packs. Description of the Drawings

[0015] This specification includes the following drawings, and the shown contents are respectively:

[0016] Figure 1 It is a schematic diagram of the cooperation between the white body assembly and the battery structure;

[0017] Figure 2 It is a top view of the first lower body assembly;

[0018] Figure 3 It is a schematic diagram of the structure of the battery swapping frame assembly;

[0019] Figure 4 It is Figure 2 The A-A cross-sectional view in

[0020] Figure 5 It is Figure 2 The B-B cross-sectional view in

[0021] Figure 6 It is a top view of the second lower body assembly;

[0022] Figure 7 It is a schematic diagram of the structure of the battery pack assembly;

[0023] Figure 8 It is a top view of the third lower body assembly;

[0024] In the figure, the markings are: 1. Battery structure 1; 2. Battery structure 2; 3. Battery structure 3; 4. White body assembly; 5. Vehicle longitudinal beam; 6. Lower body assembly; 7. Battery swapping frame assembly; 8. Mounting point; 9. Front battery swapping lock mounting cross beam; 10. Battery pack body; 11. Rear battery swapping lock mounting cross beam; 12. Side mounting position; 13. Battery pack assembly. Detailed Description of the Invention

[0025] The following will, with reference to the accompanying drawings, further elaborate on the specific implementation manners of the present utility model through the description of embodiments, aiming to help those skilled in the art have a more complete, accurate, and in-depth understanding of the concept and technical solutions of the present utility model and facilitate its implementation.

[0026] It should be noted that in the following embodiments, the "first", "second", and "third" do not represent an absolute distinction relationship in terms of structure and / or function, nor do they represent the execution order, but are merely for convenience of description.

[0027] As Figures 1 to 8 shown, the present utility model provides a lower body battery frame structure, which includes a lower body assembly 6 for detachably connecting with a battery pack assembly 13. The installation positions provided on the lower body assembly 6 for matching with the battery pack assembly 13 include a front installation position, a rear installation position, and a side installation position 12, and multiple of each of the front installation position, the rear installation position, and the side installation position 12 are provided.

[0028] Specifically, in the present utility model, the structure meets the requirements of different battery structures through integrated and shared development, realizes the requirements of multiple battery packs, and achieves cost reduction. Its characteristics are as follows: 1. Platform sharing reduces the costs of mold opening and production line transformation; 2. Sharing with 3 different structural battery structures realizes the shared development of battery packs; 3. The low-cost structural solution gives the vehicle a price advantage and increases the sales share; 4. Forming a "field" - shaped frame structure with the battery pack improves safety and NVH performance.

[0029] In the present utility model, according to the envelope of the battery pack, the boundary structures at both the front and rear ends are designed to meet the requirements of different types of batteries. As Figure 2 shown, the vehicle body has a 5 - longitudinal and 8 - transverse framework, and the main force - transmission channels are the front longitudinal beam - front floor longitudinal beam - rear longitudinal beam and the strengthened sill channel; there are many force - transmission paths in the lower body, and the primary and secondary channels disperse the force transmission, avoiding concentrated force on the channels; ultra - high - strength steel is used in many places of the vehicle body frame, greatly improving the strength and collision safety performance of the vehicle body.

[0030] As Figure 6 shown, the vehicle body adopts a 3 - transverse and 3 - longitudinal framework cross - beam structure, and the front and rear longitudinal beams are connected through - out to form a through - force - transmission channel. The middle - channel structure can meet the layout requirements of pipelines and form an intermediate force - transmission path. The front and rear cross - beams can meet the installation requirements of the battery in the X - direction (vehicle - length direction) of the vehicle body and improve the force in the Y - direction (vehicle - width direction), enhancing the force - transmission path during collision, improving the structural strength at the battery - pack location, and enhancing the safety performance of the vehicle.

[0031] The front mounting position is close to the front of the vehicle. A first through hole for the bolt to pass through is provided at the front mounting position. The axis of the first through hole is parallel to the X direction, and all the first through holes are on the same straight line parallel to the Y direction. The lower vehicle body assembly 6 includes a first body cross beam, and the first through holes are provided on the first body cross beam, and all the first through holes are arranged in sequence along the length direction of the first body cross beam.

[0032] The rear mounting position is close to the rear of the vehicle. A second through hole for the bolt to pass through is provided at the rear mounting position. The axis of the second through hole is parallel to the X direction, and all the second through holes are on the same straight line parallel to the Y direction. The lower vehicle body assembly 6 includes a second body cross beam, and the second through holes are provided on the second body cross beam, and all the second through holes are arranged in sequence along the length direction of the second body cross beam.

[0033] As the first matching method, the battery pack assembly 13 includes a front battery swapping locking mounting cross beam 9 and a rear battery swapping locking mounting cross beam 11. The front battery swapping locking mounting cross beam 9 is connected to the first body cross beam by bolts, and the rear battery swapping locking mounting cross beam 11 is connected to the second body cross beam by bolts. The lower vehicle body assembly 6 includes vehicle body side members 5. The front battery swapping locking mounting cross beam 9 and the rear battery swapping locking mounting cross beam 11 are also connected to two parallel vehicle body side members 5 by bolts. The first body cross beam and the second body cross beam are fixedly connected to the two parallel vehicle body side members 5. The battery pack is designed for front-to-back assembly in the X direction, and is bolted to the front and rear of the vehicle body through the battery pack mounting cross beam, forming a Y-direction through beam with the vehicle body and a closed frame cross beam with the vehicle body, protecting the battery pack with the maximum space. The battery pack is connected to the cross beam through a locking mechanism, and the battery swapping function can be realized.

[0034] As the second matching method, the battery pack assembly 13 is bolted to the vehicle body through a frame aluminum alloy structure, forming a closed frame cross beam with the vehicle body; the battery pack is bolted to the frame cross beam to meet the battery swapping function requirements.

[0035] As Figure 8 shown, a third through hole for the bolt to pass through is provided at the side mounting position 12. The axis of the third through hole is parallel to the Y direction, and all the third through holes are on the same straight line parallel to the X direction. The third through holes are provided on the vehicle body side members 5.

[0036] As the third matching method, as Figure 8 shown, the battery pack assembly 13 is connected to two parallel vehicle body side members 5 by bolts.

[0037] As Figure 4 and Figure 5 shown, the battery pack assembly 13 further includes a battery swapping frame assembly 7 and a battery pack body 10. The battery pack body 10 is arranged on the battery swapping frame assembly 7. The front battery swapping locking mounting cross beam 9 is fixedly connected to the front end of the battery swapping frame assembly 7, and the rear battery swapping locking mounting cross beam 11 is fixedly connected to the rear end of the battery swapping frame assembly 7.

[0038] As Figure 8 shown, the vehicle body has a 5-longitudinal and 7-transverse structure. Ultra-high strength steel is used in many places of the vehicle body frame, greatly improving the body strength and collision safety performance; the main force transmission channels are the front longitudinal beam - the front floor longitudinal beam - the rear longitudinal beam and the reinforced sill channel; there are many force transmission paths in the lower vehicle body, and the primary and secondary channels disperse the force transmission, avoiding concentrated force on the channels and improving the bending stiffness of the rear vehicle body.

[0039] The front battery swapping locking installation cross beam 9, the battery swapping frame assembly 7 and the vehicle body form an "II"-shaped frame cross beam, achieving improved strength and safety performance; by connecting the battery pack housing through a locking structure, the function of upper and lower battery swapping operations can be realized, and a low-cost structural solution has been achieved. The battery swapping frame assembly 7 and the vehicle body form a "field"-shaped frame structure, effectively improving the strength, stiffness, torsional resistance, shear resistance and other performance of the battery pack.

[0040] The present utility model also provides a vehicle, including the lower vehicle body battery frame structure with the above structure. This lower vehicle body battery frame structure can be referred to Figures 1 to 8 , and will not be elaborated here. Since the vehicle of the present utility model includes the lower vehicle body battery frame structure in the above embodiment, it has all the advantages of the above lower vehicle body battery frame structure.

[0041] The present utility model has been described exemplarily in combination with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model; or without improvement, the above concept and technical solution of the present utility model are directly applied to other occasions, they are all within the protection scope of the present utility model.

Claims

1. The lower body battery frame structure is characterized by: The lower vehicle body assembly includes a lower vehicle body assembly for forming a detachable connection with the battery pack assembly, and the lower vehicle body assembly includes a front mounting position, a rear mounting position, and a side mounting position for matching with the battery pack assembly, and a plurality of the front mounting position, the rear mounting position, and the side mounting position are provided; The front installation position is close to the front part of the vehicle, and a first through hole for the bolt to pass through is arranged at the front installation position, the axis of the first through hole is parallel to the X direction, and all the first through holes are on the same straight line parallel to the Y direction; The rear installation position is close to the rear part of the vehicle, and a second through hole for the bolt to pass through is provided at the rear installation position, the axis of the second through hole is parallel to the X direction, and all the second through holes are on the same straight line parallel to the Y direction; A third through hole for the bolt to pass through is arranged at the side installation position, the axis of the third through hole is parallel to the Y direction, and all the third through holes are located on the same straight line parallel to the X direction.

2. The lower body battery frame structure according to claim 1, characterized in that: The lower vehicle body assembly includes a first vehicle body cross beam, and the first through hole is arranged on the first vehicle body cross beam.

3. The lower body battery frame structure according to claim 1, characterized in that: The lower vehicle body assembly includes a second vehicle body cross beam, and the second through hole is arranged on the second vehicle body cross beam.

4. The lower body battery frame structure according to any one of claims 1 to 3, characterized in that: The lower vehicle body assembly includes a vehicle body longitudinal beam, and the third through hole is arranged on the vehicle body longitudinal beam.

5. A vehicle, characterized in that: It comprises the lower body battery frame structure as described in any one of claims 1 to 4.

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