Battery tray structure

Abstract

The utility model belongs to battery technical field discloses battery bottom support structure. Vehicle girder extends along first direction, and battery bottom support structure includes base and inclined support piece, and base is installed on vehicle girder, and base includes main crossbeam, and main crossbeam extends along second direction, the first end of inclined support piece is connected with the side of vehicle girder, and the second end of inclined support piece is connected with the downside of main crossbeam, and the second end is inclined to the direction of deviating from vehicle girder compared with the first end. The above-mentioned battery bottom support structure, by increasing inclined support piece between vehicle girder and main crossbeam, when base is subjected to horizontal direction vibration impact, due to the existence of inclined support piece, the impact force is transmitted from the downside of main crossbeam to the side of vehicle girder, compared with the prior art only from vertical direction force conduction scheme, a force transmission path is increased, the horizontal stress of bolt in vertical direction force transmission path is relieved, the strength of battery bottom support structure is improved, and the ability of resisting horizontal swing is increased.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery base structure. Background Technology

[0002] With the electrification of the heavy-duty truck market, back-mounted stacked battery systems are becoming increasingly popular. The existing back-mounted stacked systems consist of stacked battery packs and a base. The battery pack housing is fixed to the base with a first bolt, and the base is fixed to the heavy-duty truck frame beam with an adapter plate.

[0003] Because the battery pack housing is often long and spans across two vehicle beams, the base is only connected to the vehicle beams via an adapter plate. The strength at the connection point is relatively weak, and the overall weight of the battery pack is only applied to the vehicle beams through the adapter plate. The battery pack has a weak ability to withstand vibration and impact in the horizontal direction, which can easily cause the locking accessories at this point to become fatigued, loose, or break.

[0004] Therefore, there is an urgent need to design a battery base structure to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a battery base structure that can optimize the force transmission from the battery base structure to the vehicle frame, improve the strength of the battery base structure, and enhance its resistance to horizontal vibration and impact.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A battery support structure for connecting to a vehicle frame, the vehicle frame extending along a first direction, the battery support structure comprising:

[0008] A base is installed on the vehicle beam, the base including a main crossbeam, the main crossbeam extending along a second direction, the second direction being perpendicular to the first direction;

[0009] The inclined support member has a first end connected to the side of the vehicle beam and a second end connected to the lower side of the main crossbeam. The second end is inclined relative to the first end in a direction away from the vehicle beam.

[0010] As an optional solution, the base also includes a main longitudinal beam, which is perpendicularly connected to the main cross beam. The bottom surface of the main longitudinal beam is lower than the bottom surface of the main cross beam, and the bottom surface of the main longitudinal beam is placed on the top surface of the vehicle beam. The battery base structure includes a reinforcing component, which includes an adapter plate and the inclined support member. The adapter plate is connected to both the side of the main longitudinal beam and the side of the vehicle beam. The first end is located on the side of the adapter plate away from the vehicle beam and is connected to both the adapter plate and the vehicle beam.

[0011] As an optional solution, the aforementioned inclined support includes an inclined support portion and two connecting plates. The inclined support portion is a square tube and each end is fixedly connected to one of the aforementioned connecting plates. One of the aforementioned connecting plates is simultaneously connected to the side of the aforementioned vehicle beam and the aforementioned adapter plate, while the other of the aforementioned connecting plates is connected to the lower side of the aforementioned main crossbeam.

[0012] As an optional solution, the connecting plate connected to the adapter plate is the first connecting plate, and the inclined support also includes a first corner rib. The first corner rib protrudes from the inclined support portion and is connected to the first connecting plate. At least at the first end, the first corner rib communicates with the inclined support portion.

[0013] As an alternative, the connecting plate connected to the main crossbeam is a second connecting plate, the first locking member passes through the second connecting plate and is threaded to the main crossbeam, and an operation clearance hole is opened on the lower side of the inclined support corresponding to the position of the first locking member.

[0014] As an optional solution, the aforementioned reinforcing component also includes a hollow second corner rib, one right-angled side of which is connected to the lower side of the aforementioned main crossbeam, and the other right-angled side of which is connected to the side of the aforementioned main longitudinal beam.

[0015] As an alternative, the main longitudinal beam is a square tube, and a second corner reinforcement is provided on both sides of the main longitudinal beam.

[0016] As an optional solution, two main longitudinal beams are provided, which are spaced apart in the second direction. Two main transverse beams are also provided. At the intersection of the main transverse beams and the main longitudinal beams, a groove is formed in the main longitudinal beams, and the main transverse beams are welded to the boundary of the grooves.

[0017] As an optional solution, the battery base structure also includes a cold plate, which is placed on the base. The base also includes several auxiliary longitudinal beams spaced apart along the second direction. Each of the auxiliary longitudinal beams is connected between two main cross beams. The lower side of the cold plate has a solid structure. The solid structure has multiple threaded holes corresponding to the positions of the auxiliary longitudinal beams. A first bolt passes through the auxiliary longitudinal beam and connects to the corresponding threaded holes.

[0018] As an alternative, the end of the threaded hole opposite to the first bolt is covered with tape.

[0019] Beneficial effects:

[0020] This utility model provides a battery base structure. By adding an inclined support between the vehicle beam and the main crossbeam, when the base is subjected to horizontal vibration and impact, the impact force is transmitted from the lower side of the main crossbeam to the side of the vehicle beam due to the presence of the inclined support. Compared with the existing scheme that only transmits force in the vertical direction, this adds a force transmission path, alleviates the horizontal force on the bolts in the vertical force transmission path, improves the strength of the battery base structure, and increases its ability to resist horizontal swaying. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the battery base structure and vehicle frame provided in this embodiment of the utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the structure of the reinforcing component provided in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the battery base structure and vehicle frame provided in this embodiment of the utility model. Figure 2 ;

[0024] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 This is a schematic diagram of the inverted battery base structure provided in this embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the base provided in an embodiment of the present utility model;

[0027] Figure 7 This is a cross-sectional view of the battery base structure provided in this embodiment of the utility model;

[0028] Figure 8 yes Figure 7 Enlarged view of point B in the middle.

[0029] In the picture:

[0030] 200. Vehicle beam;

[0031] 10. Base; 11. Main crossbeam; 12. Main longitudinal beam; 121. Operating hole; 13. Auxiliary longitudinal beam;

[0032] 20. Reinforcing component; 21. Diagonal support; 211. First end; 212. Second end; 213. Diagonal support portion; 2131. Operation clearance hole; 214. First connecting plate; 215. Second connecting plate; 216. First corner rib; 217. Connecting pipe; 22. Adapter plate; 23. Second corner rib;

[0033] 30. Cold-rolled steel plate; 31. Solid structure; 32. Threaded hole; 33. First bolt; 34. Adhesive tape. Detailed Implementation

[0034] The present invention will now be described in further detail 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 not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] This embodiment provides a battery base structure for connection to the vehicle frame 200, which optimizes the force transmission from the battery base structure to the vehicle frame 200 and improves resistance to horizontal vibration and impact. Figure 1As shown, the vehicle beam 200 extends along a first direction (X direction in the figure). The battery base structure includes a base 10 and an inclined support member 21. The base 10 is mounted on the vehicle beam 200. The base 10 includes a main crossbeam 11, which extends along a second direction (Y direction in the figure) and is perpendicular to the first direction. The first end 211 of the inclined support member 21 is connected to the side of the vehicle beam 200, and the second end 212 of the inclined support member 21 is connected to the lower side of the main crossbeam 11. The second end 212 is inclined relative to the first end 211 in a direction away from the vehicle beam 200.

[0039] The aforementioned battery base structure, by adding an inclined support 21 between the vehicle beam 200 and the main crossbeam 11, allows the impact force to be transmitted from the lower side of the main crossbeam 11 to the side of the vehicle beam 200 when the base 10 is subjected to horizontal vibration and impact. Compared with the existing scheme that only transmits force in the vertical direction (Z direction in the figure), this adds a force transmission path, alleviates the horizontal force on the bolts in the vertical force transmission path, improves the strength of the battery base structure, and increases its ability to resist horizontal swaying.

[0040] Optionally, such as Figure 1 As shown, two vehicle beams 200 are provided, spaced apart along the second direction. Each vehicle beam 200 and the main crossbeam 11 are provided with the aforementioned diagonal support member 21. Further, as... Figure 1 and Figure 2 As shown, two main crossbeams 11 are provided, spaced apart in the first direction. Each main crossbeam 11 has an inclined support 21 between it and the intersecting vehicle beam 200, for a total of four inclined support 21, to ensure that the base 10 is subjected to uniform force in the first and second directions. The following description uses the structure related to one inclined support 21 as an example.

[0041] Optionally, such as Figure 1 and Figure 2 As shown (see also) Figure 6The base 10 also includes a main longitudinal beam 12, which is vertically connected to the main cross beam 11. The bottom surface of the main longitudinal beam 12 is lower than the bottom surface of the main cross beam 11, and the bottom surface of the main longitudinal beam 12 is placed on the top surface of the vehicle beam 200. The battery base structure includes a reinforcing component 20, which includes an adapter plate 22 and a diagonal support 21. The adapter plate 22 is connected to both the side of the main longitudinal beam 12 and the side of the vehicle beam 200. The first end 211 is located on the side of the adapter plate 22 away from the vehicle beam 200, and the first end 211 is connected to both the adapter plate 22 and the vehicle beam 200. It should be noted that, due to process requirements, drilling or bolting is not allowed on the upper side of the vehicle beam 200. Therefore, the adapter plate 22 is used to allow bolting from the side to achieve the vertical connection between the main longitudinal beam 12 and the vehicle beam 200. It should be noted that the main longitudinal beam 12 is a square tube, and operating holes 121 are provided at the positions where bolts need to be driven to facilitate the bolting operation; at the same time, the diagonal support 21 is also indirectly connected to the vehicle beam 200 through the adapter plate 22.

[0042] Optionally, such as Figure 3 and Figure 4 As shown, the inclined support member 21 includes an inclined support portion 213 and two connecting plates. The inclined support portion 213 is a square tube with a connecting plate fixed to each end. One connecting plate is connected to both the side of the vehicle beam 200 and the transition plate 22, while the other connecting plate is connected to the underside of the main crossbeam 11. It can be understood that a connecting plate is provided at the first end 211 and the second end 212 to facilitate connection with the side of the vehicle beam 200 and the underside of the main crossbeam 11.

[0043] Optionally, such as Figure 4 As shown, the connecting plate connected to the adapter plate 22 is the first connecting plate 214. It can be understood that the first connecting plate 214 is the first end 211. The first connecting plate 214 abuts against the adapter plate 22. A connecting pipe 217 protrudes from the first connecting plate 214 towards the inclined support portion 213. Bolts pass through the vehicle beam 200, adapter plate 22, and first connecting plate 214 in sequence before being threaded into the connecting pipe 217. Because the cross-sectional area of ​​the square tube is small, its opening area can accommodate a single connecting pipe 217. If two or more connecting pipes 217 are installed, the spacing between the two bolts will be small, easily causing insufficient strength between the bolts. Therefore, if... Figure 4As shown, the inclined support member 21 also includes a first angle rib 216, which protrudes from the inclined support portion 213 and is simultaneously connected to the first connecting plate 214. At least at the first end 211, the first angle rib 216 communicates with the inclined support portion 213. On one hand, the arrangement of the first angle rib 216 can increase the acute angle between the inclined support portion 213 and the first connecting plate 214. In this embodiment, the upper side of the first angle rib 216 is arranged perpendicularly to the first connecting plate 214 to prevent stress concentration. On the other hand, the arrangement of the first angle rib 216 can increase the opening area between the inclined support portion 213 and the first connecting plate 214, so that two connecting pipes 217 can be arranged on the first connecting plate 214, and the two connecting pipes 217 are in the opening formed by the inclined support portion 213 and the first angle rib 216, thereby strengthening the connection strength of the first connecting plate 214.

[0044] Optionally, such as Figure 4 and Figure 5 As shown, the connecting plate connected to the main crossbeam 11 is the second connecting plate 215. It can be understood that the second connecting plate 215 is the second end 212. The first locking member passes through the second connecting plate 215 and is threadedly connected to the main crossbeam 11. An operation clearance hole 2131 is provided on the lower side of the inclined support 213 corresponding to the position of the first locking member. Through the above arrangement, the second connecting plate 215 achieves the connection between the inclined support 21 and the lower side of the main crossbeam 11, and the operation clearance hole 2131 facilitates the tightening of bolts. In this embodiment, as... Figure 5 As shown, there are three operation clearance holes 2131, and there is also one bolt connected to the second connecting plate 215 outside the inclined support 213, to ensure the connection strength between the second connecting plate 215 and the main crossbeam 11.

[0045] Optionally, such as Figure 4 and Figure 5 As shown, the reinforcing component 20 also includes a hollow second corner rib 23. One right-angled side of the second corner rib 23 is connected to the lower side of the main crossbeam 11, and the other right-angled side of the second corner rib 23 is connected to the side of the main longitudinal beam 12. This increases the connection strength between the main crossbeam 11 and the main longitudinal beam 12.

[0046] Optionally, such as Figure 5 As shown, a second corner reinforcement 23 is provided on both sides of the main longitudinal beam 12. This makes reasonable use of space and ensures that the force on both sides of each main longitudinal beam 12 is relatively balanced.

[0047] Optionally, such as Figure 6As shown, at the intersection of the main crossbeam 11 and the main longitudinal beam 12, a groove is formed in the main longitudinal beam 12, and the main crossbeam 11 is welded to the boundary of the groove. Therefore, compared with the scheme where the main crossbeam 11 is directly stacked on the main longitudinal beam 12, the main crossbeam 11 is partially embedded in the interior of the main longitudinal beam 12, resulting in a reduction in the height of the main crossbeam 11, which alleviates the horizontal sway of the overall model and enhances the ability of the top of the system to resist horizontal forces.

[0048] Optionally, such as Figure 7 and Figure 8 As shown, the battery base structure also includes a cold plate 30, which is placed on the base 10. The base 10 also includes several auxiliary longitudinal beams 13 spaced apart along the second direction (see reference). Figure 5 Each auxiliary longitudinal beam 13 is connected between two main cross beams 11. The lower side of the cold plate 30 has a solid structure 31, and the solid structure 31 has multiple threaded holes 32 corresponding to the positions of the auxiliary longitudinal beams 13. The first bolt 33 passes through the auxiliary longitudinal beam 13 and connects with the corresponding threaded holes 32. It can be understood that in the prior art, the cold plate 30 is only bolted on the outermost ring of the base 10, while this solution uses the solid structure 31 on the lower side of the cold plate 30 to add an internal first bolt 33 to connect the solid structure 31, which can alleviate the horizontal force on the bottom locking bolts and enhance the system's ability to resist horizontal swaying.

[0049] Optionally, such as Figure 8 As shown, tape 34 is attached to the end of the threaded hole 32 away from the first bolt 33. The tape 34 covers the threaded hole 32, ensuring the airtightness of the housing.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery base structure for connection to a vehicle beam (200), the vehicle beam (200) extending along a first direction, characterized in that, The battery base structure includes: A base (10) is mounted on the vehicle beam (200). The base (10) includes a main crossbeam (11) that extends along a second direction perpendicular to the first direction. An inclined support member (21) is provided, with its first end (211) connected to the side of the vehicle beam (200) and its second end (212) connected to the lower side of the main crossbeam (11). The second end (212) is inclined relative to the first end (211) in a direction away from the vehicle beam (200).

2. The battery base structure according to claim 1, characterized in that, The base (10) also includes a main longitudinal beam (12), which is vertically connected to the main cross beam (11). The bottom surface of the main longitudinal beam (12) is lower than the bottom surface of the main cross beam (11). The bottom surface of the main longitudinal beam (12) is placed on the top surface of the vehicle beam (200). The battery base structure includes a reinforcing component (20), which includes a transition plate (22) and the inclined support (21). The transition plate (22) is connected to both the side of the main longitudinal beam (12) and the side of the vehicle beam (200). The first end (211) is located on the side of the transition plate (22) away from the vehicle beam (200). The first end (211) is connected to both the transition plate (22) and the vehicle beam (200).

3. The battery base structure according to claim 2, characterized in that, The inclined support (21) includes an inclined support part (213) and two connecting plates. The inclined support part (213) is a square tube and each end is fixedly connected to one of the connecting plates. One of the connecting plates is simultaneously connected to the side of the vehicle beam (200) and the adapter plate (22), and the other connecting plate is connected to the lower side of the main crossbeam (11).

4. The battery base structure according to claim 3, characterized in that, The connecting plate connected to the adapter plate (22) is a first connecting plate (214). The inclined support member (21) also includes a first corner rib (216). The first corner rib (216) protrudes from the inclined support part (213) and is connected to the first connecting plate (214). At least at the first end (211), the first corner rib (216) communicates with the inclined support part (213).

5. The battery base structure according to claim 3, characterized in that, The connecting plate connected to the main crossbeam (11) is the second connecting plate (215). The first locking member passes through the second connecting plate (215) and is threadedly connected to the main crossbeam (11). An operation clearance hole (2131) is opened on the lower side of the inclined support (213) corresponding to the position of the first locking member.

6. The battery base structure according to claim 2, characterized in that, The reinforcing component (20) also includes a hollow second corner rib (23), one right-angled side of the second corner rib (23) is connected to the lower side of the main crossbeam (11), and the other right-angled side of the second corner rib (23) is connected to the side of the main longitudinal beam (12).

7. The battery base structure according to claim 6, characterized in that, The main longitudinal beam (12) is a square tube, and a second corner bar (23) is provided on both sides of the main longitudinal beam (12).

8. The battery base structure according to any one of claims 2-7, characterized in that, Two main longitudinal beams (12) are provided, and the two main longitudinal beams (12) are spaced apart in the second direction. Two main transverse beams (11) are provided. At the intersection of the main transverse beams (11) and the main longitudinal beams (12), the main longitudinal beams (12) have grooves, and the main transverse beams (11) are welded to the boundary of the grooves.

9. The battery base structure according to any one of claims 1-7, characterized in that, The battery base structure also includes a cold plate (30), which is placed on the base (10). The base (10) also includes several auxiliary longitudinal beams (13) spaced apart along the second direction. Each auxiliary longitudinal beam (13) is connected between two main cross beams (11). The lower side of the cold plate (30) has a solid structure (31). The solid structure (31) has multiple threaded holes (32) corresponding to the positions of the auxiliary longitudinal beams (13). A first bolt (33) passes through the auxiliary longitudinal beam (13) and connects to the corresponding threaded hole (32).

10. The battery base structure according to claim 9, characterized in that, The threaded hole (32) is covered with tape (34) at the end opposite to the first bolt (33).

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