Buffer structure for ion battery pack

Abstract

The utility model relates to a buffer structure for an ion battery pack, which comprises a battery pack, a hanging beam and a hanging bracket, the hanging beam is fixedly connected with the battery pack, the hanging bracket is detachably connected with the hanging beam, a buffer structure is arranged between the hanging bracket and the hanging beam, and the hanging bracket is used for being fixed on a cluster frame. The technical problems that an existing battery pack mounting structure is poor in shock resistance, lacks a buffer structure and is inconvenient to disassemble and assemble are solved.

Description

Technical Field

[0001] This invention relates to a buffer structure for lithium-ion battery packs. Background Technology

[0002] In current electric vehicles or industrial equipment, the battery pack, as the core power component, is typically fixedly mounted to a frame structure via structural connections. The frame is the main frame structure of the equipment or vehicle, used to support, protect, and carry multiple subsystems, including the battery pack, controller, and drive mechanism.

[0003] In existing technologies, the connection between the battery pack and the cluster frame generally adopts a rigid connection structure, such as direct connection by bolts or connection of the bracket to the cluster frame by welding. While this type of structure can meet basic structural strength requirements, it has significant drawbacks:

[0004] First, electric equipment is often subjected to external forces such as vibration, impact or drop during operation. Due to the lack of a buffer mechanism in the connection structure, the vibration will be directly transmitted to the battery pack body, which may cause the internal modules to loosen, the solder joints to crack, and the electrical connection to be abnormal, thereby affecting the safety and service life of the equipment.

[0005] Secondly, most rigid connection structures are not designed with the ease of modular installation and disassembly in mind. When it is necessary to maintain, replace or repair the battery pack, the operation is complicated and the disassembly is time-consuming, which affects the overall maintenance efficiency and response speed of the machine.

[0006] Furthermore, welding or rigid bolted connections are prone to fatigue, deformation, or loosening under long-term dynamic loads, posing a potential threat to the system's structural stability. In harsh conditions, without effective buffering design, stress concentration may occur between the battery pack and the frame structure, increasing the risk of damage.

[0007] Therefore, the existing installation methods between battery packs and cluster racks urgently need optimization to address key technical issues such as poor shock resistance, lack of buffer structures, inconvenient installation and disassembly, and poor structural adaptability. In light of this technical background, there is an urgent need for an innovative structural design that combines buffering and energy absorption capabilities with rapid installation and disassembly to improve the overall performance of the vehicle (or engine) system in terms of safety, reliability, and maintenance efficiency. Utility Model Content:

[0008] The purpose of this invention is to address the shortcomings of the prior art and provide a buffer structure for ion battery packs.

[0009] A buffer structure for an ion battery pack includes a battery pack, a hanging beam, and a hanger. The hanging beam is fixedly connected to the battery pack, and the hanger is detachably connected to the hanging beam. A buffer structure is provided between the hanger and the hanging beam. The hanger is used to fix the battery pack to a cluster frame.

[0010] Furthermore, the hanger and the hanger beam are connected by bolts.

[0011] Furthermore, the buffer structure includes a first soft pad and a second soft pad, the second soft pad being located between the hanger and the hanger beam, and the first soft pad being located between the bolt head and the hanger beam.

[0012] Furthermore, the lifting beam is a U-shaped structure, comprising a lower part, a middle part, and an upper part. The lower part is fixedly connected to the bottom of the battery pack, the middle part is fixedly connected to the side of the battery pack, and the upper part is used to connect to the hanger.

[0013] Furthermore, the hanger is a right-angle bent structure, with one bent section connected to the middle of the hanger beam and the other bent section connected to the upper part of the hanger beam. Bolts pass through the first soft pad, the hanger beam, the second soft pad, and the hanger in sequence.

[0014] Furthermore, the upper part of the lifting beam is also equipped with multiple lifting lugs, and the center of each lifting lug has a through hole.

[0015] Furthermore, the suspension beam is welded to the battery pack.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0017] The introduction of a first and a second soft pad effectively absorbs external vibrations and impacts, reduces the mechanical stress on the battery pack during transportation or use, and improves overall safety and reliability.

[0018] The hangers and beams are connected by bolts, which facilitates maintenance, replacement and assembly, and improves the flexibility and operability of the structure.

[0019] The suspension beam has a U-shaped structure, with the lower part fixed to the bottom of the battery pack, the middle part fixed to the side, and the upper part connected to the hanger, providing multi-point support and enhancing the overall rigidity and load-bearing capacity.

[0020] Adding soft pads to the bolted connections helps to prevent localized wear and stress concentration caused by direct metal-to-metal contact, thus extending service life.

[0021] The hanger has a right-angle bend structure to match the installation requirements of different directions. At the same time, the upper part of the hanger beam has multiple hanger lugs and through holes, which can flexibly adapt to different cluster frame structures.

[0022] The connection between the lifting beam and the battery pack is made by welding, ensuring a firm and reliable connection. This method is suitable for long-term vibration environments, such as new energy vehicles or industrial energy storage systems. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the battery pack;

[0024] Figure 2 This is a schematic diagram of the assembly of the hanger and the hanger beam;

[0025] Figure 3 This is a schematic diagram of the suspension beam;

[0026] Figure 4 This is a schematic diagram of the hanger;

[0027] In the diagram, 1 is the battery pack, 2 is the suspension beam, 3 is the suspension bracket, 4 is the first soft pad, 5 is the second soft pad, 6 is the upper part, 7 is the middle part, 8 is the lower part, and 9 is the lifting lug plate. Detailed Implementation

[0028] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0029] A buffer structure for an ion battery pack includes a battery pack 1, a hanging beam 2, and a hanging bracket 3. The hanging beam 2 is fixedly connected to the battery pack 1, and the hanging bracket 3 is detachably connected to the hanging beam 2. A buffer structure is provided between the hanging bracket 3 and the hanging beam 2. The hanging bracket 3 is used to fix the battery pack to a cluster frame.

[0030] The working principle of this buffer structure is as follows: by setting a buffer structure between the hanger 3 and the beam 2, it effectively buffers and absorbs the mechanical impacts and vibrations that may occur to the lithium-ion battery pack 1 during transportation, installation, or operation. The beam 2, as an intermediate component connecting the battery pack 1 and the hanger 3, is rigidly fixed to the battery pack 1 to form an integral load-bearing structure. The hanger 3 is used to fix the entire structure to the cluster frame. The connection between the beam 2 and the hanger 3 is detachable, facilitating later maintenance and replacement. The buffer structure, typically made of materials with good elasticity and shock absorption properties, such as rubber pads, foam pads, or composite elastic materials, forms a flexible contact interface between the hanger 3 and the beam 2, absorbing part of the impact force from the cluster frame direction and preventing the impact from being directly transmitted to the interior of the battery pack 1.

[0031] In one possible implementation, the hanger 3 and the beam 2 are connected by bolts. This implementation uses bolts to connect the hanger 3 and the beam 2, providing good disassembly while ensuring structural strength. Bolted connections offer high strength and repeated assembly / disassembly capabilities, allowing for multiple reassemblies and disassemblies without damaging the structure, facilitating later maintenance, replacement of cushioning materials, or adjustments to the structural layout. When under stress, the bolts can form a localized elastic release structure with pads and other accessories, thus providing partial cushioning.

[0032] In one possible implementation, the buffer structure includes a first soft pad 4 and a second soft pad 5, with the second soft pad 5 located between the hanger 3 and the hanger beam 2, and the first soft pad 4 located between the bolt head and the hanger beam 2.

[0033] This buffer structure achieves layered buffering and vibration isolation by setting two layers of soft pads. The second soft pad 5 is located at the contact surface between the suspension beam 2 and the hanger 3, and is mainly used to absorb vertical or horizontal impact loads caused by vehicle movement, starting, or impact. The first soft pad 4 is set between the bolt head and the suspension beam 2 to avoid concentrated stress on the suspension beam 2 during bolt tightening or use, thereby improving local stress buffering and connection stability.

[0034] In one possible implementation, the suspension beam 2 is a U-shaped structure, comprising a lower part 8, a middle part 7, and an upper part 6. The lower part 8 is fixedly connected to the bottom of the battery pack 1, the middle part 7 is fixedly connected to the side of the battery pack 1, and the upper part 6 is used to connect to the hanger 3.

[0035] The U-shaped lifting beam 2 provides a multi-point fixed support platform, enhancing the vertical and horizontal stability of the battery pack 1 through a three-sided contact method. The lower part 8 connects to the bottom of the battery pack 1 to provide load-bearing support, the middle part 7 connects to the sides to enhance the overall anti-tilting and anti-seismic capabilities, and the upper part 6 is used to connect the hanger 3 to realize the mounting of the entire battery system.

[0036] In one possible implementation, the hanger 3 is a right-angle bent structure, with one bent section connected to the middle 7 of the hanging beam 2 and the other bent section connected to the upper 6 of the hanging beam 2. Bolts pass through the first soft pad 4, the hanging beam 2, the second soft pad 5, and the hanger 3 in sequence.

[0037] The structure utilizes a right-angle bend design to create a stable support surface for the hanger 3, which can simultaneously support the middle 7 and upper 6 of the beam 2, enhancing overall fixation strength and stability. The bolt insertion sequence is rationally designed, helping to maintain structural coaxiality and stability during assembly and ensuring the cushioning material functions effectively under pressure.

[0038] In one possible implementation, the upper part 6 of the lifting beam 2 is also provided with multiple lifting lugs 9, each with a through hole at its center. This design enhances the connection strength and adjustability with the hanger 3 by providing multiple lifting lugs 9 as connection points on the lifting beam 2. The lifting lugs 9, through the through holes, allow bolts or other connecting parts to be inserted, forming multiple fixing points on the lifting beam 2 to meet the loading requirements at different positions or heights, thus enhancing the structural adaptability.

[0039] In one possible implementation, the suspension beam 2 is welded to the battery pack 1. This structure achieves a secure connection between the suspension beam 2 and the battery pack 1 through welding, effectively avoiding structural instability caused by loose or detached bolts. The welding forms a permanent connection, improving the overall structural strength, sealing, and vibration resistance, making it suitable for applications requiring high fixation strength.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 cushioning structure for an ion battery pack, characterized by, It includes a battery pack, a hanging beam, and a hanging bracket. The hanging beam is fixedly connected to the battery pack, and the hanging bracket is detachably connected to the hanging beam. A buffer structure is provided between the hanging bracket and the hanging beam. The hanging bracket is used to fix it on the cluster frame.

2. A cushioning structure for an ion battery pack according to claim 1, wherein, The hanger and the beam are connected by bolts.

3. A buffer structure for an ion battery pack according to claim 2, characterized in that, The buffer structure includes a first soft pad and a second soft pad, with the second soft pad located between the hanger and the hanger beam, and the first soft pad located between the bolt head and the hanger beam.

4. A cushioning structure for an ion battery pack according to claim 3, wherein, The lifting beam has a U-shaped structure, which includes a lower part, a middle part, and an upper part. The lower part is fixedly connected to the bottom of the battery pack, the middle part is fixedly connected to the side of the battery pack, and the upper part is used to connect to the hanger.

5. A cushioning structure for an ion battery pack according to claim 4, wherein, The hanger is a right-angle bent structure, with one bent section connected to the middle of the hanger beam and the other bent section connected to the upper part of the hanger beam. Bolts pass through the first soft pad, the hanger beam, the second soft pad, and the hanger in sequence.

6. A cushioning structure for an ion battery pack according to claim 5, wherein, The upper part of the lifting beam is also equipped with multiple lifting lugs, and the center of each lifting lug has a through hole.

7. A cushioning structure for an ion battery pack according to any one of claims 1-6, wherein, The lifting beam is welded to the battery pack.

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