Power battery suspension assembly and heavy truck power battery system thereof

Abstract

The utility model relates to the field of heavy truck power battery assembly systems, in particular to a power battery suspension assembly and a heavy truck power battery system thereof, which comprise a connecting support, one end of the connecting support is fixed with a frame, and the other end of the connecting support is detachably connected with a battery frame connecting frame body; bushings which are oppositely installed are installed in the battery frame connecting frame body, a transverse locking support is arranged at the ends, away from the connecting support, of the bushings, the bushings are fixed through the transverse locking support, pre-compression on the bushings is formed, and therefore the service life of the bushings is prolonged. The power battery suspension assembly can effectively attenuate vibration impact on a battery system, attenuate impact damage to a power battery and protect efficient operation of the battery.

Description

Technical Field

[0001] This utility model relates to the field of heavy-duty truck power battery assembly systems, specifically to a power battery mounting assembly and its heavy-duty truck power battery system. Background Technology

[0002] With the development of new energy power, heavy-duty trucks are increasingly using battery systems as their power source; however, there are currently no dedicated battery mount assemblies for these systems. The patents found mainly focus on designing the main support frame to address the large size of the battery, without designing a vibration damping unit or using software from engine mounts to support the battery system. These designs rely on dedicated adapter brackets for connection to the battery system, without specifically designing rubber vibration damping components for heavy-duty truck battery systems. Consequently, both their vibration damping performance and the reliability of the mount itself are poor.

[0003] CN201720942502.5 proposes a flexible structure for connecting the battery box to the vehicle frame. Its rubber body is a block structure, which is simple. To protect the rubber body from damage, the scheme designs multiple metal protection mechanisms. However, this structure is complex to assemble, has insufficient reliability, and is only suitable for battery structures for transmission.

[0004] CN202020636511.3 proposes a flexible anti-torsion device for power batteries, which uses a traditional engine mount as a vibration damping structure and connects it to the vehicle frame via an adapter bracket. This solution is not suitable for large-tonnage power battery systems, otherwise the vibration damping structure is prone to premature failure.

[0005] CN202122369993.8 proposes a battery bracket solution, which is simple to assemble and easy to implement in a modular manner, but it does not have a matching corresponding suspension and vibration damping element.

[0006] Therefore, it is necessary to design a power battery mounting assembly that is easy to install and can effectively improve the vibration damping of the battery system. Utility Model Content

[0007] Addressing the shortcomings of existing technologies, particularly considering the relatively heavy weight of existing systems (approximately 3-5 tons) and the need for battery mounts on both sides of the vehicle frame to provide sufficient power input for vehicle operation, this utility model discloses a power battery mounting assembly. Through a rational structural design, it connects the battery frame to the vehicle frame beam, enabling rapid installation and removal of the battery system from the frame. Furthermore, the rubber main body of the mount effectively attenuates vibrations and impacts transmitted from the road surface, mitigating damage to the battery and reducing vibration and impact on the cab. This protects the battery system for optimal operation under various road conditions. The mounting system itself also possesses excellent reliability. This structure is maintenance-free for its entire lifespan, eliminating the need for regular maintenance by the driver.

[0008] The technical means adopted by this utility model to solve the above problems are as follows:

[0009] A power battery mounting assembly is disclosed, including a connecting bracket. One end of the connecting bracket is fixed to the vehicle frame, and the other end is detachably connected to the battery frame connecting frame. A bushing is installed inside the battery frame connecting frame. A transverse locking bracket is provided at the end of the bushing away from the connecting bracket. The transverse locking bracket fixes the bushing and forms a pre-compression of the bushing to improve the service life of the bushing.

[0010] This utility model's power battery mounting assembly integrates a connecting bracket, a battery frame connecting frame, and a mating bushing via a transverse locking bracket. During system assembly, the connecting bracket is transversely locked to the vehicle frame. The battery frame connecting frame is connected to the battery assembly via bolts. During connection, the bolts are lowered vertically, and the bottom positioning pin is pre-positioned with the battery assembly. After positioning, the bolts can be tightened directly, making installation convenient. This solves the problem that the large volume of the battery assembly causes significant interference with assembly operations during transverse installation, making it difficult to perform.

[0011] Furthermore, the bushing includes a rubber damping assembly, which is composed of a metal outer jacket and a vulcanized rubber part; the rubber part is the main load-bearing rubber damping unit, and the bushings are installed in pairs in the battery frame connecting frame to form left and right movement limits. On the one hand, it can protect the maximum movement displacement of the battery assembly in all directions and avoid interference with other components; on the other hand, the two bushings can be assembled together to protect the rubber and prevent the rubber from being damaged due to excessive deformation during movement.

[0012] Furthermore, the connecting bracket includes a seat that fits against the vehicle frame, and the seat has a first mounting portion with a variable diameter on the side near the bushing; the first mounting portion is an annular mounting platform. This structure is designed to allow the connecting bracket and bushing to fit more tightly, and it can also cooperate with the lateral locking bracket to enhance the installation reliability of the entire suspension assembly.

[0013] Furthermore, the battery frame connecting bracket includes an annular shell, the interior of which is a centrally symmetrical receiving cavity. The inner diameter of the open end of the annular shell is larger than the inner diameter of the center of the annular shell. This structural design makes it easier to assemble the battery frame receiving bushing, and also prevents the bushing from easily falling out of the receiving cavity of the battery frame connecting bracket after installation.

[0014] Furthermore, the outer wall of the annular housing is provided with a second mounting portion, the center surface of which is parallel to the end face of the vehicle frame.

[0015] Furthermore, the mounting section consists of two symmetrically arranged cylindrical structures to facilitate the installation of the battery frame; a pointed portion is provided between the two cylindrical structures for initial positioning during installation.

[0016] Furthermore, the transverse locking bracket includes an end cap and a neck. The end cap includes a recessed mounting plane and a protective portion surrounding the mounting plane. The mounting plane has a mounting hole at its center for fixing the end cap to the connecting bracket.

[0017] Furthermore, a skirt is provided on the side of the neck away from the end cap to lock the bushing edge.

[0018] Furthermore, the transverse locking bracket and the connecting bracket are fixed together by connecting bolts.

[0019] Another objective of this utility model is to disclose a heavy-duty truck power battery system, including the aforementioned power battery mounting assembly.

[0020] The advantages of this utility model compared to the prior art are:

[0021] This utility model proposes a power battery mounting assembly that, considering the heavy load and the need for rapid installation of the power battery system on both sides of the vehicle frame in heavy-duty vehicles, innovatively proposes a dedicated vibration damping structure. This structure not only connects the vehicle frame and the power battery assembly system but also has the following functions:

[0022] This power battery mounting assembly can effectively attenuate vibration and impact on the battery system, reduce impact damage to the power battery, and protect the battery for efficient operation.

[0023] This power battery mounting assembly improves the reliability of the mounting system itself. Under the premise of effectively connecting the battery system, the bushing and the battery frame are arranged in a conical shape, which can effectively support the pad in all directions. At the same time, the pad (rubber damping assembly) itself mainly bears the compression deformation, which can effectively withstand the impact in all directions and greatly improve the service life.

[0024] The overall layout of this power battery mounting assembly is simple and easy to assemble. The frame end can be directly connected to the side of the frame, while the battery end bracket can be directly installed vertically to the soft pad (rubber damping assembly).

[0025] The various frames and vibration damping units of this power battery mounting assembly are structured separately; if any part is damaged, it can be directly disassembled and replaced, thus improving the overall utilization rate.

[0026] Therefore, this power battery mounting assembly is specifically designed and matched for new energy battery vehicles, featuring high reliability and ease of assembly; it also has broad market prospects. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the power battery suspension assembly described in this utility model.

[0028] Figure 2 This is an assembly diagram of the power battery mounting assembly described in this utility model.

[0029] Figure 3 This is a schematic diagram of the transverse locking bracket of the power battery suspension assembly described in this utility model.

[0030] Figure 4 This is a schematic diagram of the bottom structure of the power battery suspension assembly described in this utility model.

[0031] Figure 5 This is a cross-sectional view along direction A of the power battery mounting assembly described in this utility model.

[0032] Figure 6 This is a schematic diagram of the connecting bracket of the power battery suspension assembly described in this utility model.

[0033] Figure 7 This is a schematic diagram of the connecting bolts of the power battery suspension assembly described in this utility model.

[0034] Figure 8 This is a schematic diagram of the installation state of the power battery suspension assembly described in this utility model.

[0035] Among them, 1-connecting bracket, 2-battery frame connecting frame, 3-bushing, 4-lateral locking bracket, 5-connecting bolt, 11-base, 12-first mounting part, 13-arc surface, 14-through hole, 15-weight reduction groove, 21-accommodating cavity, 22-second mounting part, 23-tip part, 31-metal jacket, 32-rubber part, 41-end cap, 42-mounting plane, 43-protective part, 44-mounting hole, 45-neck, 46-skirt part, 51-head, 52-rod part, 53-transition surface, 100-frame. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings. The drawings are for illustrative purposes only, representing schematic diagrams only, not actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Example 1

[0037] like Figures 1-8 As shown, this power battery mounting assembly is a rubber component installed on the vehicle frame 100 to reduce and control vibration and impact transmitted to the power battery, and to provide support. The power battery mounting assembly combines the connecting bracket, battery frame connecting frame, and mounting bushings via a lateral locking bracket. During system assembly, the connecting bracket is laterally locked to the vehicle frame. The battery frame connecting frame is connected to the battery assembly via bolts. During connection, the bolts are lowered vertically, and the bottom locating pin is pre-positioned with the battery assembly. After positioning, the bolts are tightened directly, making installation convenient. This solves the problem that the large volume of the battery assembly caused significant interference with assembly operations during lateral installation, making it difficult to perform.

[0038] The power battery mounting assembly of this embodiment specifically includes a connecting bracket 1. One end of the connecting bracket 1 is fixed to the vehicle frame 100, and the other end is detachably connected to the battery frame connecting frame 2. A bushing 3 is installed inside the battery frame connecting frame 2. A transverse locking bracket 4 is provided at the end of the bushing 3 away from the connecting bracket 1. The transverse locking bracket 4 fixes the bushing 3, forming a pre-compression of the bushing 3 to improve the service life of the bushing 3.

[0039] like Figure 2 As shown, this bushing 3 includes a rubber vibration damping assembly, which is composed of a metal outer jacket 31 and a rubber part 32 vulcanized together; the rubber part 32 is the main load-bearing rubber vibration damping unit. The rubber part 32 is the main load-bearing rubber vibration damping unit. The bushings are installed in pairs inside the battery frame connecting frame 2, which can form left and right movement limits. On the one hand, it can protect the maximum movement displacement of the battery assembly in all directions and avoid interference with other components; on the other hand, the pair of bushings can protect the rubber and prevent the rubber from being damaged due to excessive deformation during movement.

[0040] To ensure a tighter fit between the connecting bracket and the bushing, and to facilitate cooperation with the lateral locking bracket, thereby enhancing the overall installation reliability of the suspension assembly, the connecting bracket 1 includes a seat 11 that conforms to the vehicle frame 100. The seat 11, near the bushing 3, has a first mounting portion 12 with a variable diameter; the first mounting portion 12 is an annular mounting platform. Preferably, in this embodiment, the edges of the connecting bracket 1 are curved surfaces 13, and the intersections of the curved surfaces 13 are configured with through holes 14 for lateral locking within the vehicle frame. Simultaneously, the bottom surface is provided with several weight-reduction holes 15 to achieve the lightweight requirement of the entire structure.

[0041] The battery frame connecting bracket 2 includes an annular housing with a centrally symmetrical conical receiving cavity 21 inside. The inner diameter of the open end of the annular housing is larger than the inner diameter of the center of the annular housing. A second mounting portion 22 is provided on the outer wall of the annular housing, and the center plane of the second mounting portion 22 is parallel to the end face of the vehicle frame 100. The bushing 3 is arranged conically with the battery frame connecting bracket 2, which can effectively support the soft pad in all directions. At the same time, the soft pad itself mainly bears the compression deformation and can effectively withstand the impact in all directions, which can greatly improve the service life.

[0042] The mounting section 22 consists of two symmetrically arranged cylindrical structures with through holes on the inner wall that are not threaded, facilitating the installation of the battery frame; a pointed section 23 is provided between the two cylindrical structures for initial positioning during installation.

[0043] In this embodiment, as Figure 3 As shown, the transverse locking bracket 4 includes an end cap 41 and a neck 45. The end cap 41 includes a recessed mounting surface 42 and a protective portion 43 surrounding the mounting surface. A mounting hole 44 is provided at the center of the mounting surface 42 for fixing the end cap 41 to the connecting bracket 1. A skirt portion 46 is provided on the side of the neck 45 away from the end cap 41 to lock the edge of the bushing 3.

[0044] The neck 45 of the transverse locking bracket 4 abuts against the first mounting portion 12 of the connecting bracket 1, and the transverse locking bracket 4 and the connecting bracket 1 are fixed by connecting bolts 5. Figure 7 As shown, the connecting bolt 5 includes a head 51 and a shank 52, with a wedge-shaped transition surface 53 between the head 51 and the shank 5 to tightly fit the end face of the bushing 3. Preferably, the length of the shank 52 is greater than the sum of the height of the neck 45 and the height of the first mounting portion 12.

[0045] After the bushing 3 is installed into the battery frame connecting bracket 2, it is fitted and secured to the bushing 3 by the transverse locking bracket 4. The transverse locking bracket 4 is then further secured to the connecting bracket 1 by the connecting bolts 5. This process pre-compresses the rubber, improving its lifespan, and transfers vertical forces to the connecting bracket 1, preventing impact damage to the suspension assembly. The connecting bolts 5 primarily bear the lateral external forces, preventing the transverse locking bracket 4 from dislodging or even being damaged under significant impact.

[0046] In this embodiment, the connecting bracket 1, the battery frame connecting frame 2, and the horizontal locking bracket 4 can all be made of common carbon steel materials such as 45 steel and 40Cr; the forming method can be cast steel, ductile iron or forging and other forming processes.

[0047] In this embodiment, the metal outer sleeve 31 used for the bushing 3 is formed by stamping, and the material can be either general stamping steel or aluminum. The metal outer sleeve 31 is vulcanized with rubber to improve the rigidity of the pad itself.

[0048] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the scope of this utility model, and these should also be considered within the protection scope of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A power battery suspension assembly comprising a connecting bracket (1), characterized in that, One end of the connecting bracket (1) is fixed with the frame (100), and the other end is detachably connected with the battery box connecting frame body (2); the battery box connecting frame body (2) is internally mounted with a matched bushing (3), one end of the bushing (3) away from the connecting bracket (1) is provided with a transverse locking bracket (4), the transverse locking bracket (4) fixes the bushing (3) and forms pre-compression of the bushing (3), so as to improve the service life of the bushing (3).

2. The power battery suspension assembly of claim 1, wherein, The bushing (3) comprises a rubber damping assembly, which is composed of a metal sleeve (31) and a rubber part (32) vulcanized; the rubber part (32) is a main rubber damping unit under load.

3. The power battery suspension assembly of claim 1, wherein, The connecting bracket (1) comprises a seat body (11) attached to the frame (100), the seat body (11) is provided with a first mounting part (12) with variable diameter near one side of the bushing (3); the first mounting part (12) is an annular mounting table.

4. The power battery suspension assembly of claim 3, wherein, The battery box connecting frame body (2) comprises an annular shell, the inside of the annular shell is a center-symmetrical accommodating cavity (21), the inner diameter of the opening end of the annular shell is larger than the inner diameter of the center of the annular shell.

5. The power battery suspension assembly of claim 4, wherein, The outer wall of the annular shell is provided with a second mounting part (22), the center surface of the second mounting part (22) is parallelly arranged with the end surface of the frame (100).

6. The power battery suspension assembly of claim 5, wherein, The mounting part (22) is symmetrically provided with two cylindrical structures, which facilitates the falling of the battery frame; a pointed end part (23) is arranged between the two cylindrical structures for initial positioning.

7. The power battery suspension assembly of any one of claims 1-6, wherein, The transverse locking bracket (4) comprises an end cover (41) and a neck part (45), the end cover (41) comprises a concave mounting plane (42) and a protection part (43) surrounding the outside of the mounting plane, the center of the mounting plane (42) is provided with a mounting hole (44) for fixing the end cover (41) with the connecting bracket (1).

8. The power battery suspension assembly of claim 7, wherein, The neck part (45) is provided with a skirt part (46) away from one side of the end cover (41) to lock the edge of the bushing (3).

9. The power battery suspension assembly of claim 8, wherein, The transverse locking bracket (4) is fixed with the connecting bracket (1) through a connecting bolt (5).

10. A heavy duty truck power battery system characterized by, The power battery suspension assembly of claim 9 is provided. The power battery suspension assembly of claim 9 is provided.

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