New energy automobile battery pack and automobile body integrated connecting structure

Abstract

The utility model relates to the technical field of battery installation, and discloses a new energy automobile battery pack and automobile body integrated connecting structure which comprises a chassis fixing frame, an adjusting mechanism is arranged on the chassis fixing frame, an auxiliary mechanism is arranged on the adjusting mechanism, and the adjusting mechanism comprises a top hole. The top hole is formed in the inner wall of the top of the base plate fixing frame, the inner wall of an inner ring of the top hole is in threaded connection with a fixing screw, the outer wall of the bottom of the base plate fixing frame is fixedly connected with a T-shaped frame, a penetrating hole is formed in the inner wall of the front side of the T-shaped frame, the inner wall of the top of the T-shaped frame is slidably connected with a concave frame, and butt joint holes are formed in the outer walls of the front side and the rear side of the T-shaped frame. According to the utility model, the convenient installation and stable connection of the battery pack rack and the vehicle body are realized through the structural design, and the use amount of fixing parts is reduced by utilizing the guiding and limiting effects of a specific structure, so that the disassembly and assembly process is simplified, the maintenance time is shortened, and the protection performance can be enhanced through the sealing part.

Description

Technical Field

[0001] This utility model relates to the field of battery installation technology, and in particular to an integrated connection structure between a new energy vehicle battery pack and the vehicle body. Background Technology

[0002] The integrated battery pack and vehicle body structure for new energy vehicles is a design solution that transforms the battery pack from a traditional "external component" into an integral part of the vehicle body structure. Its core is to achieve synergy between the battery pack and the vehicle body in terms of load-bearing capacity, safety, and lightweighting through optimized connection methods and structural integration. This structure is a core component of current new energy vehicle "battery integration" technologies (such as CTC and CTB).

[0003] An integrated connection structure typically consists of three parts: the vehicle chassis frame, the battery pack housing, and the connection components. The connection method must take into account strength, sealing, and process feasibility. The integration of the battery pack with the vehicle body is an innovative design that transforms the battery pack from a traditional external component into a part of the vehicle body structure. Through composite connection methods such as high-strength bolts, laser welding, and structural adhesive bonding, the battery pack housing and the vehicle chassis frame are tightly combined.

[0004] An integrated connection structure between a new energy vehicle battery pack and the vehicle body has the following drawbacks: the integrated structure welds the battery pack to the vehicle chassis or binds it with a large number of screws. If the battery cell, module, or shell is damaged, a large number of body structures, such as a large number of fasteners and clips, need to be disassembled for repair, which prolongs the repair time and affects the maintenance efficiency. Therefore, an integrated connection structure between a new energy vehicle battery pack and the vehicle body is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an integrated connection structure between the battery pack and the vehicle body of a new energy vehicle. It aims to improve the problem in the prior art where the integrated structure welds the battery pack to the vehicle chassis or binds it with a large number of screws. If the battery cell, module or shell is damaged, a large number of vehicle body structures need to be disassembled.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an integrated connection structure between a new energy vehicle battery pack and the vehicle body, comprising a chassis mounting frame, an adjustment mechanism on the chassis mounting frame, an auxiliary mechanism on the adjustment mechanism, the adjustment mechanism including a top hole, the top hole being formed in the top inner wall of the chassis mounting frame, a fixing screw being threaded to the inner wall of the inner ring of the top hole, a T-shaped frame being fixedly connected to the bottom outer wall of the chassis mounting frame, a through hole being formed in the front inner wall of the T-shaped frame, a concave frame being slidably connected to the top inner wall of the T-shaped frame, mating holes being formed in the front and rear outer walls of the concave frame, a battery pack frame being fixedly connected to the rear outer wall of the concave frame, and a sealing gasket being fixedly connected to the bottom outer wall of the chassis mounting frame.

[0007] As a further description of the above technical solution: the auxiliary mechanism includes a positioning groove, which is formed on the bottom outer wall of the chassis fixing frame. Positioning blocks are slidably connected to the inner walls of the left and right sides of the positioning groove. A side guard plate is fixedly connected to the bottom outer wall of the positioning block. An opening is formed on the side outer wall of the side guard plate. A bottom guard plate is fixedly connected to the bottom outer wall of the side guard plate. The fixing screw penetrates the bottom inner wall of the positioning block.

[0008] As a further description of the above technical solution: the positions of the through hole and the mating hole are adapted to each other, there are a total of several fixing screws, and the fixing screws pass through the mating hole and extend to the inner wall of the inner ring of the through hole.

[0009] As a further description of the above technical solution: the length and width of the sealing gasket are adapted to the length and width of the battery pack frame, and the top outer wall of the battery pack frame contacts the bottom outer wall of the sealing gasket.

[0010] As a further description of the above technical solution: there are two positioning blocks and two side guards. The two side guards are respectively fixedly connected to the outer side walls of the two positioning blocks, and the two side guards are symmetrical to each other.

[0011] As a further description of the above technical solution: the opening position is adapted to the position of the through hole, and the fixing screw penetrates the inner wall of the opening and extends to the inner wall of the through hole.

[0012] This utility model has the following beneficial effects:

[0013] 1. In this utility model, the structural design enables convenient installation and stable connection between the battery pack frame and the vehicle body. The guiding and limiting effect of the specific structure reduces the number of fasteners used, which not only simplifies the disassembly and assembly process and shortens the maintenance time, but also enhances the protective performance through sealing components, effectively blocking the intrusion of external impurities and providing a good operating environment for the battery pack.

[0014] 2. In this utility model, the battery pack frame is wrapped and protected by auxiliary protective components, which can prevent direct damage to the battery pack frame caused by ground debris or collisions during vehicle operation. At the same time, the protective components work together with other structures to enhance the overall rigidity of the bottom of the vehicle body, improve the deformation resistance of the vehicle body, and help extend the service life of the battery pack and related vehicle body components. Attached Figure Description

[0015] Figure 1 This is a schematic front view of an integrated connection structure between a new energy vehicle battery pack and the vehicle body proposed in this utility model.

[0016] Figure 2This is a top view schematic diagram of an integrated connection structure between a new energy vehicle battery pack and the vehicle body proposed in this utility model;

[0017] Figure 3 This is a schematic diagram showing the disassembled view of an integrated connection structure between a new energy vehicle battery pack and the vehicle body proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of an auxiliary mechanism for an integrated connection structure between a new energy vehicle battery pack and the vehicle body, as proposed in this utility model.

[0019] Legend:

[0020] 1. Chassis mounting bracket; 2. Adjustment mechanism; 20. Fixing screw; 21. T-shaped bracket; 22. Through hole; 221. Concave bracket; 23. Top hole; 24. Docking hole; 25. Battery pack bracket; 26. Sealing gasket; 3. Auxiliary mechanism; 31. Positioning block; 32. Positioning groove; 33. Side guard plate; 34. Opening; 35. Bottom guard plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-3This utility model provides an embodiment of an integrated connection structure between a new energy vehicle battery pack and the vehicle body, including a chassis mounting frame 1, an adjustment mechanism 2 on the chassis mounting frame 1, and an auxiliary mechanism 3 on the adjustment mechanism 2. The adjustment mechanism 2 includes a top hole 23, which is formed on the inner top wall of the chassis mounting frame 1. The top hole 23 provides an installation channel for fixing screws 20, allowing the fixing screws 20 to pass through and connect the chassis mounting frame 1 to the vehicle chassis frame. The inner wall of the inner ring of the top hole 23 is threaded with fixing screws 20. A T-shaped frame 21 is fixedly connected to the outer bottom wall of the chassis mounting frame 1. The T-shaped frame 21 provides sliding guidance and support for a concave frame 221. The structure precisely limits the sliding direction of the concave frame 221. The front inner wall of the T-frame 21 has a through hole 22. The top inner wall of the T-frame 21 is slidably connected to the concave frame 221. The front and rear outer walls of the concave frame 221 have mating holes 24. The rear outer wall of the concave frame 221 is fixedly connected to the battery pack frame 25. The battery pack frame 25 is used to support and fix the battery pack. The connection with the concave frame 221 realizes the integrated installation of the battery pack and the vehicle body. The bottom outer wall of the chassis mounting bracket 1 is fixedly connected to the sealing gasket 26. The sealing gasket 26 is used to enhance the sealing between the battery pack frame 25 and the chassis mounting bracket 1 and prevent external dust and moisture from entering the interior of the battery pack frame 25.

[0023] Reference Figures 2-4 The positions of the through hole 22 and the mating hole 24 are matched. There are several fixing screws 20 to ensure that the fixing screws 20 can accurately pass through both, and ensure that the connection and fixing of the concave frame 221 and the T-shaped frame 21 can be carried out smoothly. The fixing screws 20 pass through the mating hole 24 and extend to the inner wall of the inner ring of the through hole 22. The length and width of the sealing gasket 26 are matched with the length and width of the battery pack frame 25 to ensure that the sealing gasket 26 can completely cover the contact area of ​​both, maximizing the sealing effect. The top outer wall of the battery pack frame 25 contacts the bottom outer wall of the sealing gasket 26.

[0024] Reference Figures 3-4The auxiliary mechanism 3 includes a positioning groove 32, which is formed on the bottom outer wall of the chassis mounting frame 1. The positioning groove 32 provides installation positioning for the positioning block 31, ensuring that the side guard plate 33 and the bottom guard plate 35 can be accurately installed in the preset position. The positioning block 31 is slidably connected to the inner walls of the left and right sides of the positioning groove 32, and the side guard plate 33 is fixedly connected to the bottom outer wall of the positioning block 31. The side guard plate 33 protects the left and right sides of the battery pack frame 25 to prevent damage to the battery pack frame 25 caused by collisions with debris on the sides. The side outer wall of the side guard plate 33 has an opening 34. A bottom protective plate 35 is fixedly connected to the bottom outer wall of the 33. The bottom protective plate 35 protects the bottom of the battery pack frame 25 and prevents ground debris and protrusions from hitting the battery pack frame 25. There are two positioning blocks 31 and two side protective plates 33. The two side protective plates 33 are fixedly connected to the side outer walls of the two positioning blocks 31 respectively. The two side protective plates 33 are symmetrical. The opening position of the opening 34 is adapted to the position of the through hole 22. The fixing screw 20 penetrates the inner wall of the opening 34 and extends to the inner wall of the through hole 22. The fixing screw 20 penetrates the bottom inner wall of the positioning block 31.

[0025] Working principle: The chassis mounting bracket 1 is fixed to the inner wall of the vehicle chassis with fixing screws 20. Then, the concave bracket 221 is inserted into the T-shaped bracket 21, so that the battery pack bracket 25 contacts and adheres to the sealing gasket 26, reducing the entry of outside air into the battery pack bracket 25. At the same time, the battery pack bracket 25 does not require front and rear limiters for fixing parts. The left and right limits are fixed by the fixing screws 20 passing through the docking hole 24 and threadedly connected to the through hole 22. The T-shaped bracket 21 and the concave bracket 221 guide and limit the limit, reducing the amount of fixing screws 20 used for limiting, thereby reducing the time for personnel to disassemble and maintain. At the same time, the positioning block 31 is inserted into the corresponding positioning groove 32, and then the fixing screw 20 passes through the bottom of the positioning block 31 and is threadedly fixed to the top hole 23. The side guard plate 33 and the bottom guard plate 35 wrap and protect the battery pack bracket 25, preventing ground debris or collisions when the vehicle is driving, and preventing the battery pack bracket 25 from being deformed due to direct contact, thereby increasing the overall anti-deformation performance of the bottom of the vehicle body.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new energy automobile battery pack and vehicle body integrated connection structure, comprising a chassis fixing frame (1), characterized in that: An adjustment mechanism (2) is provided on the chassis fixing frame (1), and an auxiliary mechanism (3) is provided on the adjustment mechanism (2); The adjustment mechanism (2) includes a top hole (23), which is opened on the top inner wall of the chassis fixing frame (1). The inner ring of the top hole (23) is threaded with a fixing screw (20). The bottom outer wall of the chassis fixing frame (1) is fixedly connected to a T-shaped frame (21). The front inner wall of the T-shaped frame (21) is provided with a through hole (22). The top inner wall of the T-shaped frame (21) is slidably connected to a concave frame (221). The front and rear outer walls of the concave frame (221) are provided with mating holes (24). The rear outer wall of the concave frame (221) is fixedly connected to a battery pack frame (25). The bottom outer wall of the chassis fixing frame (1) is fixedly connected to a sealing gasket (26).

2. The new energy vehicle battery pack and vehicle body integrated connection structure according to claim 1, characterized in that: The auxiliary mechanism (3) includes a positioning groove (32), which is opened on the bottom outer wall of the chassis fixing frame (1). Positioning blocks (31) are slidably connected to the inner walls of the left and right sides of the positioning groove (32). A side guard plate (33) is fixedly connected to the bottom outer wall of the positioning block (31). An opening (34) is opened on the side outer wall of the side guard plate (33). A bottom guard plate (35) is fixedly connected to the bottom outer wall of the side guard plate (33).

3. The new energy vehicle battery pack and vehicle body integrated connection structure according to claim 1, characterized in that: The positions of the through hole (22) and the mating hole (24) are adapted to each other. There are a number of fixing screws (20). The fixing screws (20) penetrate the bottom inner wall of the positioning block (31). The fixing screws (20) penetrate the mating hole (24) and extend to the inner wall of the inner ring of the through hole (22).

4. The new energy vehicle battery pack and vehicle body integrated connection structure according to claim 1, characterized in that: The length and width of the sealing gasket (26) are adapted to the length and width of the battery pack frame (25), and the top outer wall of the battery pack frame (25) contacts the bottom outer wall of the sealing gasket (26).

5. The new energy vehicle battery pack and vehicle body integrated connection structure according to claim 2, characterized in that: There are two positioning blocks (31) and two side guards (33). The two side guards (33) are fixedly connected to the outer side walls of the two positioning blocks (31) respectively, and the two side guards (33) are symmetrical.

6. The new energy vehicle battery pack and vehicle body integrated connection structure according to claim 2, characterized in that: The opening (34) is positioned to match the position of the through hole (22), and the fixing screw (20) penetrates the inner wall of the opening (34) and extends to the inner wall of the through hole (22).

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