Suspension type side-hung battery pack fixing device, vehicle and assembly method of suspension type side-hung battery pack fixing device

Abstract

The invention relates to the field of vehicle battery pack installation, and particularly provides a suspension type side-hung battery pack fixing device, a vehicle and an assembling method thereof.The suspension type side-hung battery pack fixing device comprises a first fixing device body and a second fixing device body which are located on the two opposite sides of a battery pack, and the first fixing device body and the second fixing device body are the same in structure; each suspension support comprises two suspension supports and a support body, the two suspension supports are vertically arranged on the side face of the battery pack, each suspension support comprises a vertical connecting plate and a horizontal connecting lug, and the horizontal connecting lugs are connected to the vertical connecting plates and located at the positions close to the ends of the vertical connecting plates. Shock pads are arranged at the bottoms of the horizontal connecting lugs; the support body comprises a vertical connecting plate and a vertical supporting plate, and the vertical supporting plate is perpendicularly connected with the vertical connecting plate. The vertical connecting plate is connected with the battery pack fixing bracket; and the two are rigidly connected.

Description

Technical Field

[0001] This invention relates to the field of vehicle battery pack installation, specifically to a mounting device for a side-mounted battery pack on a suspended heavy truck. Background Technology

[0002] Currently, in some vehicles, the battery pack is mounted side-mounted to the frame. However, most vehicles are rigidly connected to the battery pack, creating a cantilever structure on the non-fixed side (the side furthest from the frame). During vehicle operation, vibrations directly impact this connection, potentially causing it to loosen or fail, exacerbating vibrations and ultimately damaging the battery pack. Solving this problem requires further strengthening the connections to ensure overall structural reliability, but this significantly increases the vehicle's cost and weight. Summary of the Invention

[0003] To address the technical problems existing in the prior art, the first objective of this invention is to disclose a suspended side-mounted battery pack fixing device; the second objective of this invention is to disclose a vehicle equipped with the device and a battery based on the suspended side-mounted battery pack fixing device; and the third objective of this invention is to propose an assembly method.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a suspended side-mounted battery pack fixing device, comprising a first fixing device and a second fixing device located on opposite sides of the battery pack. The first fixing device and the second fixing device have the same structure, each comprising two suspension brackets and a bracket body. The two suspension brackets are vertically arranged on the side of the battery pack. Each suspension bracket includes a first vertical connecting plate and a horizontal connecting ear, wherein the horizontal connecting ear is connected to the first vertical connecting plate and is located at an end position near the top of the first vertical connecting plate, and a shock-absorbing pad is provided at the bottom of the horizontal connecting ear. The bracket body includes a second vertical connecting plate and a vertical support plate, the vertical support plate being vertically connected to the second vertical connecting plate. The second vertical connecting plate is connected to the battery pack fixing bracket, and the two are rigidly connected. The vertical support plate is connected to the shock-absorbing pad.

[0005] The aforementioned battery pack fixing device adds two suspension brackets and a bracket body to both sides of the battery pack. The arrangement of the two suspension brackets and the bracket body makes the non-fixed side of the battery pack no longer a cantilever structure, but a device with two support points on both sides. At the same time, shock-absorbing pads are set at the support points. Therefore, this fixing device can not only reliably support the battery pack, but also absorb the vibration generated by the battery pack during vehicle operation through the shock-absorbing structure, thereby improving the reliability of electric vehicles.

[0006] As a further technical solution, the vertical support plate includes an unclosed support frame and a cross frame disposed inside the support frame; the shock-absorbing pad is located at the top of the cross frame and at the intersection with the support frame.

[0007] As a further technical solution, the first fixing device and the second fixing device are symmetrically arranged with respect to the center line of the battery pack.

[0008] As a further technical solution, the two suspension brackets of the first fixing device are respectively positioned close to the edge of the battery pack.

[0009] As a further technical solution, the two suspension brackets of the second fixing device are respectively positioned close to the edge of the battery pack.

[0010] As a further technical solution, the first vertical connecting plate is made of alloy steel.

[0011] As a further technical solution, the first vertical connecting plate is rigidly connected to the battery pack body.

[0012] As a further technical solution, the shock-absorbing pad is a composite structure of alloy steel and rubber.

[0013] Secondly, the present invention provides a vehicle including the aforementioned suspended side-mounted battery pack fixing device.

[0014] Thirdly, based on the above-mentioned suspended side-mounted battery pack fixing device, the present invention also provides an assembly method, as follows: During assembly, firstly, four suspension brackets are bolted to the already fixed battery pack. Two suspension brackets are fixed to the left side of the battery pack and two to the right side. Then, the bracket body is bolted to the vehicle frame. Finally, the battery pack and suspension bracket assembly is hoisted and fixed to the bracket body already assembled on the vehicle frame. This ensures that the shock-absorbing pads of the two suspension brackets rest precisely on the top of the vertical support plate, providing a certain buffering effect when the battery pack vibrates.

[0015] The beneficial effects of this invention are as follows: The battery pack fixing device proposed in this invention adds two suspension brackets and a bracket body to both sides of the battery pack, so that the two suspension brackets and the bracket body are orthogonally connected to form a "vertical-horizontal" bidirectional constraint, which improves the vibration attenuation rate in the Z direction. Moreover, the arrangement of the suspension brackets and the bracket body makes the non-fixed side of the battery pack no longer a cantilever structure, but a device with two support points on both sides. At the same time, a shock-absorbing pad is set at the support point, that is, the shock-absorbing pad is located at the bottom of the horizontal connecting ear, which effectively blocks the transmission path of high-frequency vibration and reduces the vibration amplitude. Therefore, this design can not only achieve reliable support for the battery pack, but also absorb the vibration generated by the battery pack during vehicle operation through the shock-absorbing structure, thereby improving the reliability of electric vehicles. Furthermore, the vertical support plate of the main body of the bracket of the present invention is not enclosed, and the support frame is combined with the cross frame to form a biomimetic honeycomb structure, which improves the bending stiffness; the shock-absorbing pad is located at the top node of the cross frame, which reduces the local contact stress.

[0016] Furthermore, the battery pack installation method proposed in this invention adopts a modular assembly approach. First, four suspension brackets are fixed to both sides of the already fixed battery pack. Then, the bracket body is fixed to the vehicle frame. Finally, the battery pack and suspension bracket assembly is hoisted and fixed to the bracket body already assembled on the vehicle frame. This ensures that the shock-absorbing pads of the two suspension brackets fall precisely on the top of the vertical support plate, achieving a proper fit between them. The shock-absorbing pads act as a buffer when the battery pack vibrates. The entire assembly method is simple and reliable. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Figure 1 This is a schematic diagram of the structure disclosed in some embodiments of the present invention; Figure 2 This is a schematic diagram of the operation of the rubber shock-absorbing pad during vehicle operation according to the present invention; Figure 3 This is a schematic diagram of the suspended heavy-duty truck side-mounted battery pack fixing structure disclosed in the embodiments of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the suspended heavy-duty truck side-mounted battery pack fixing structure disclosed in the embodiments of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the suspended heavy-duty truck side-mounted battery pack fixing structure disclosed in the embodiments of the present invention. Figure 3 ; In the diagram: 1. Suspension bracket; 2. Bracket body; 3. Vehicle frame; 4. Battery pack; 11. First vertical connecting plate; 12. Horizontal connecting lug; 13. Shock-absorbing pad; 14. Connecting hole; 21. Second vertical connecting plate; 22. Vertical support plate; Detailed Implementation It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. For ease of description, the words "up," "down," "left," and "right" appearing in this invention only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component 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 invention.

[0020] As described in the background section, the existing technology has shortcomings. To address the above-mentioned technical problems, this invention proposes a suspended heavy-duty truck side-mounted battery pack fixing device, vehicle, and assembly method. Specifically, in this embodiment, the suspension bracket 1 structure is based on the traditional battery pack 4 fixing bracket, with the addition of two rubber shock-absorbing pads. The entire device is divided into two parts: one part is the bracket body 2, which is rigidly fixed to the side of the vehicle frame 3; the other part is the suspension bracket 1 with composite shock-absorbing pads. One side of this suspension bracket 1 is made of alloy steel, which is rigidly connected to the battery pack 4 body; the other side is a composite part of alloy steel and rubber, which connects the suspension bracket 1 to the bracket body 2. More specifically, the suspended side-mounted battery pack fixing device proposed in this invention includes a first fixing device and a second fixing device located on opposite sides of the battery pack. The first fixing device and the second fixing device have the same structure, and each includes two suspension brackets and a bracket body. The two suspension brackets are vertically arranged on the side of the battery pack. Each suspension bracket includes a first vertical connecting plate and a horizontal connecting ear, wherein the horizontal connecting ear is connected to the first vertical connecting plate and is located at the end near the top of the first vertical connecting plate. A shock-absorbing pad is provided at the bottom of the horizontal connecting ear. The bracket body includes a second vertical connecting plate and a vertical support. The first vertical support plate is perpendicularly connected to the second vertical connecting plate; the second vertical connecting plate is connected to the battery pack fixing bracket; the two are rigidly connected; the suspended heavy truck side-mounted battery pack fixing device proposed in this invention adds two suspension brackets and a bracket body on both sides of the battery pack. The arrangement of the two suspension brackets and the bracket body makes the non-fixed side of the battery pack no longer a cantilever structure, but a support with two support points on both sides; through this design, reliable support of the battery pack can be achieved, and the vibration generated by the battery pack during truck driving can be absorbed through the shock absorption structure, thereby improving the reliability of the electric vehicle.

[0021] The present invention will now be described in detail with reference to the accompanying drawings; In a typical embodiment of the present invention, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this embodiment provides a suspended heavy-duty truck side-mounted battery pack fixing device, including a first fixing device and a second fixing device. The first fixing device and the second fixing device have the same structure, wherein the first fixing device is located on the left side of the battery pack 4, and the second fixing device is located on the right side of the battery pack 4; in this embodiment, Figure 1 Only the fixing device on one side is shown; the other side is exactly the same as the first side, so it is not shown.

[0022] Furthermore, such as Figure 1 As shown, since the first fixing device and the second fixing device described above have the same structure, therefore, Figure 1Taking the first fixing device shown on the side as an example, the structure of the two fixing devices will be described. The first fixing device includes two suspension brackets 1 and a bracket body 2. The two suspension brackets 1 are vertically arranged on the side of the battery pack 4. Each suspension bracket 1 includes a first vertical connecting plate 11 and a horizontal connecting ear 12. The horizontal connecting ear 12 is connected to the first vertical connecting plate 11 and is located near the end of the first vertical connecting plate 11. A shock-absorbing pad 13 made of alloy steel and rubber composite is provided at the bottom of the horizontal connecting ear 12. The battery pack fixing device proposed in this embodiment adds two suspension brackets on both sides of the battery pack to... The design incorporates a main support structure, which orthogonally connects two suspension brackets to the main support structure, forming a "vertical-horizontal" bidirectional constraint, thereby improving the Z-axis vibration attenuation rate. Furthermore, the arrangement of the suspension brackets and the main support structure ensures that the non-fixed side of the battery pack is no longer a cantilever structure, but rather a device with two support points on both sides. Simultaneously, damping pads are placed at the support points, specifically at the bottom of the horizontal connecting lugs, effectively blocking the transmission path of high-frequency vibrations and reducing the vibration amplitude. Therefore, this design not only provides reliable support for the battery pack but also absorbs the vibrations generated by the battery pack during vehicle operation through the damping structure, thus improving the reliability of electric vehicles.

[0023] The bracket body 2 includes a second vertical connecting plate 21 and a vertical support plate 22, with the vertical support plate 22 perpendicularly connected to the second vertical connecting plate 21; the second vertical connecting plate 21 is connected to the vehicle frame 3, and the two are rigidly connected (for details of the connection, please refer to...). Figure 4 The top of the vertical support plate 22 is used to support the assembled battery pack 4 and the two suspension brackets 1; the shock-absorbing pads of the two suspension brackets 1 fall exactly on the top of the vertical support plate 22, and the shock-absorbing pads 13 play a certain buffering role when the battery pack 4 vibrates.

[0024] The suspended heavy-duty truck side-mounted battery pack fixing device proposed in this embodiment adds two suspension brackets 1 and a bracket body 2 on both sides of the battery pack. The cooperative arrangement between the two suspension brackets 1 and the bracket body 2 makes the non-fixed side of the battery pack 4 no longer a cantilever structure, but a support structure with two support points on both sides. At the same time, shock-absorbing pads 13 are set at the support points. This design can not only achieve reliable support for the battery pack, but also absorb the vibration generated by the battery pack 4 during vehicle operation through the shock-absorbing pads 13, thereby improving the reliability of the electric vehicle.

[0025] As a further preferred embodiment, the vertical support plate 22 in this embodiment includes an unclosed support frame and a cross-shaped frame disposed inside the support frame; the connection position between the shock-absorbing pad 13 and the vertical support plate 22 is located at the intersection of the top of the cross-shaped frame and the support frame, where the force to be borne is greater and the effect is better; the unclosed support frame of the vertical support plate of the bracket body, together with the cross-shaped frame, forms a biomimetic honeycomb structure, thereby improving the bending stiffness; the shock-absorbing pad is located at the top node of the cross-shaped frame, reducing the local contact stress.

[0026] As a further preferred embodiment, the second vertical connecting plate 21 and the vertical support plate 22 are integrally formed, or welded together, or fixed together by bolts or other connecting parts.

[0027] As a further preferred embodiment, multiple connection holes are provided on the second vertical connecting plate 21, which is rigidly connected to the vehicle frame 3 by bolts; that is, the bracket body 2 is bolted to the vehicle frame 3 by bolts.

[0028] As a further preferred embodiment, in this embodiment, the suspension bracket 1 of the first fixing device and the suspension bracket 1 of the second fixing device are symmetrically arranged with respect to the battery pack body, thereby ensuring the uniformity of force on both sides of the battery pack 4; that is, the two suspension brackets 1 on the left side of the battery pack and the two suspension brackets 1 on the right side of the battery pack are symmetrically arranged with respect to each other.

[0029] As a further preferred embodiment, in this embodiment, the two suspension brackets 1 of the first fixing device are respectively positioned close to the edge of the battery pack 4. By positioning them close to the edge, the battery pack 4 can be better subjected to force. Similarly, in this embodiment, the two suspension brackets 1 of the second fixing device are respectively positioned close to the edge of the battery pack 4. By positioning them close to the edge, the battery pack 4 can be better subjected to force.

[0030] As a further preferred embodiment, the first vertical connecting plate 11 in this embodiment is made of alloy steel and is rigidly connected to the battery pack 4 body, specifically by means of screws. Figure 3 As shown, multiple sets of connection holes 14 are arranged sequentially from top to bottom on the first vertical connecting plate 11, and the multiple sets of connection holes 14 fix the first vertical connecting plate 11 to the battery pack 4 body.

[0031] As a further preferred embodiment, the first vertical connecting plate 11 and the horizontal connecting ear 12 are integrally formed as a whole structure, realizing the transmission of force between the battery pack 4 and the shock-absorbing pad 13.

[0032] As a further preferred embodiment, the shock-absorbing pad 13 in this embodiment, through a high-strength, high-damping structure composed of metal and rubber, releases the energy generated by the vibration of the battery pack 4 and prevents it from damaging the fixing structure of the battery pack 4.

[0033] As a further preferred embodiment, the connection between the shock-absorbing pad 13 and the vertical support plate 22 can be designed as follows: the shock-absorbing pad 13 is designed as a boss or slot structure, and the top of the vertical support plate 22 is designed with a corresponding groove or protrusion, so that the shock-absorbing pad 13 and the vertical support plate 22 can be directly inserted together; then the two are fixed by interference fit. Other connection methods are also possible, such as high-strength adhesive bonding. The specific connection is determined according to actual needs and is not limited here. like Figure 2 As shown, when the vehicle is running, the impact generated by the vibration of the battery pack 4 (the downward arrow indicates the direction of the impact) is transmitted through the suspension bracket 1 to the rubber damping pad 13 on the outside of the suspension bracket 1 (the battery pack 4 is connected to the inside of the suspension bracket 1). Compared with the rigid connection, the high-damping and high-elasticity rubber damping pad 13 absorbs the vibration energy of the battery pack 4 through its own elastic deformation, so that it will not be transmitted to the weak position of the rigid connection between the bracket body 2 and the vehicle frame 3.

[0034] The assembly method for the above-mentioned device is as follows: During assembly, the four suspension brackets 1 are first bolted to the already fixed three-layer battery pack 4. Specifically, two suspension brackets 1 are fixed to the left side and two suspension brackets 1 are fixed to the right side of the battery pack 4. Then, the bracket body 2 is bolted to the vehicle frame 3. Finally, the battery pack 4 and the suspension bracket 1 assembly is hoisted and fixed to the bracket body 2 that has been assembled on the vehicle frame 3. This ensures that the shock-absorbing pads 13 of the two suspension brackets 1 fall exactly on the top of the vertical support plate. The shock-absorbing pads 13 play a certain buffering role when the battery pack 4 vibrates.

[0035] The battery pack installation method proposed in this embodiment adopts a modular assembly approach. Specifically, firstly, four suspension brackets are fixed to both sides of the already fixed battery pack. Then, the bracket body is fixed to the vehicle frame. Finally, the battery pack and suspension bracket assembly is hoisted and fixed to the bracket body already assembled on the vehicle frame, so that the shock-absorbing pads of the two suspension brackets fall exactly on the top of the vertical support plate to achieve the cooperation between the two. The shock-absorbing pads play a buffering role when the battery pack vibrates. The entire assembly method is simple and reliable.

[0036] Furthermore, based on the aforementioned suspended side-mounted battery pack fixing device and battery pack installation method, this embodiment also provides an electric vehicle in which the battery pack 4 is fixed using the aforementioned fixing device and installation method. Because this electric vehicle employs the above-mentioned connection method, it also possesses all the advantages described above: reliable support for the battery pack and absorption of vibrations generated during vehicle operation through a shock-absorbing structure, thus improving the reliability of the electric vehicle. Of course, in some embodiments, the electric vehicle provided by this invention can be any suitable type of vehicle, such as new energy vehicles, heavy trucks, and other types of electric transport vehicles, passenger vehicles, etc.

[0037] Finally, it should be noted that relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A suspended side-mounted battery pack fixing device, characterized in that, The device includes a first fixing device and a second fixing device located on opposite sides of the battery pack (4). The first fixing device and the second fixing device have the same structure, each including two suspension brackets (1) and a bracket body (2). The two suspension brackets (1) are vertically arranged on the side of the battery pack (4). Each suspension bracket (1) includes a first vertical connecting plate (11) and a horizontal connecting ear (12). The horizontal connecting ear (12) is connected to the first vertical connecting plate (11) and is located at the end near the top of the first vertical connecting plate (11). A shock-absorbing pad (13) is provided at the bottom of the horizontal connecting ear (12). The bracket body (2) includes a second vertical connecting plate (21) and a vertical support plate (22). The vertical support plate (22) is vertically connected to the second vertical connecting plate (21). The second vertical connecting plate (21) is connected to the fixing bracket of the battery pack (4) and the two are rigidly connected. The vertical support plate (22) is connected to the shock-absorbing pad (13).

2. The suspended side-mounted battery pack fixing device as described in claim 1, characterized in that, The vertical support plate (22) includes an unclosed support frame and a cross frame set inside the support frame; the shock-absorbing pad (13) is located at the top of the cross frame and at the cross connection position with the support frame.

3. The suspended side-mounted battery pack fixing device as described in claim 1, characterized in that, The first fixing device and the second fixing device are symmetrically arranged with respect to the center line of the battery pack (4).

4. The suspended side-mounted battery pack fixing device as described in claim 1, characterized in that, The two suspension brackets (1) of the first fixing device are respectively positioned close to the edge of the battery pack (4).

5. The suspended side-mounted battery pack fixing device as described in claim 1, characterized in that, The two suspension brackets (1) of the second fixing device are respectively set close to the edge of the battery pack (4).

6. The suspended side-mounted battery pack fixing device as described in claim 1, characterized in that, The first vertical connecting plate (11) is made of alloy steel.

7. The suspended side-mounted battery pack fixing device as described in claim 1, characterized in that, The first vertical connecting plate (11) is rigidly connected to the battery pack (4) body.

8. The suspended side-mounted battery pack fixing device as described in claim 1, characterized in that, The shock-absorbing pad (13) is composed of metal and rubber.

9. A vehicle, characterized in that, Includes the suspended side-mounted battery pack fixing device as described in any one of claims 1-8.

10. The assembly method of the suspended side-mounted battery pack fixing device as described in any one of claims 1-8, characterized in that, as follows: During assembly, firstly, four suspension brackets (1) are fixed to both sides of the already fixed battery pack (4), then the bracket body (2) is fixed to the vehicle frame, and finally the battery pack (4) and suspension bracket (1) assembly is hoisted and fixed to the bracket body (2) that has been assembled on the vehicle frame, so that the shock-absorbing pads (13) of the two suspension brackets (1) fall exactly on the top of the vertical support plate (22) to achieve the cooperation between the two. The shock-absorbing pads (13) play a buffering role when the battery pack (4) vibrates.

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