Anti-vibration structure for lithium battery module

Abstract

The utility model provides an anti-vibration structure for a lithium battery module, which comprises an anti-vibration top plate, an elastic cushion and an anti-vibration bottom plate, the anti-vibration bottom plate is provided with a convex structure, the convex structure comprises a pair of flanges and a top plane, the flanges extend upwards from the surface of the anti-vibration bottom plate, and the top plane is jointed with the two flanges. The elastic cushion is arranged in the top face area, except the protruding structure, of the anti-vibration bottom plate, the elastic cushion is clamped between the anti-vibration top plate and the anti-vibration bottom plate, the thickness of the elastic cushion is larger than the height of the flange, and the anti-vibration top plate and the top plane of the protruding structure are fixedly connected through a screw and a nut. The anti-vibration structure disclosed by the utility model is light in volume, can be arranged in a battery shell together with the battery pack to play a role in bearing and buffering, the anti-vibration structure mainly plays a role in damping by virtue of the elastic cushion, and when the battery pack is vibrated, the anti-vibration top plate is matched with the elastic cushion to increase the buffering contact area, so that the vibration amplitude of the battery pack is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery module technical field, specifically, it shows a kind of anti-vibration structure for lithium battery module. BACKGROUND

[0002] The battery pack in lithium battery module is usually connected and fixed by adhesive tape and binding tape by parallel arrangement of several batteries, and the output end at the top of the battery is connected by a connecting piece, and the output pole connecting piece at the two ends needs to be connected to the high-voltage output seat at the top of the end plate on both sides of the battery pack, and the existing high-voltage output seat is fixedly connected with the end plate, and then connected with the output pole connecting piece by screws, and the connecting piece is connected with the battery output end by welding, and the stability of the connection between the high-voltage output seat and the output pole connecting piece will directly affect the performance of the battery module.

[0003] The conventional design of the lithium battery module at present is to fix and install the bottom of the battery pack and the battery shell in a hard connection mode, but when the lithium battery module is applied in an environment with more vibration, the longitudinal vibration will be directly transmitted to the high-voltage output seat and the end plate at the top of the battery, so that the connection between the high-voltage output seat and the output pole connecting piece is subjected to excessive vibration, which may even cause the connection to loosen, which will affect the use of the lithium battery module.

[0004] After searching, the existing technology patent No. CN209472015U discloses a shockproof lithium battery shell, the shell main body and the inner shell main body are fixedly connected through the damping spring arranged between the bottoms of the two, and the damping spring is used to play the damping and shock resistance effect. However, the spring usually cannot be adjusted, which is not conducive to the later maintenance, and in the installation process, it is also necessary to ensure that the spring has enough stroke space, which will cause the size design of the battery shell to be larger, resulting in too large volume, which is not conducive to actual use. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an anti-vibration structure for lithium battery module, which is simple and practical in structure and effectively reduces the vibration of the battery pack inside the battery shell.

[0006] The technical scheme is as follows:

[0007] An anti-vibration structure for lithium battery module, comprising an anti-vibration top plate, an elastic pad and an anti-vibration bottom plate, the anti-vibration bottom plate has a protruding structure thereon, the protruding structure comprises a pair of flanges extending upward from the surface of the anti-vibration bottom plate and a top plane connected with the two flanges, the elastic pad is arranged on the top surface area outside the protruding structure on the anti-vibration bottom plate, and the elastic pad is clamped between the anti-vibration top plate and the anti-vibration bottom plate, the thickness of the elastic pad is greater than the height of the flange, and the anti-vibration top plate and the top plane of the protruding structure are fixedly connected by a screw rod and a nut.

[0008] In one possible implementation, the anti-vibration bottom plate has a protruding structure, and two elastic pads are arranged on the two outer sides of the protruding structure.

[0009] In another possible implementation, the anti-vibration bottom plate has two spaced protruding structures, and the elastic pads are arranged between the adjacent protruding structures and on the outer sides of the protruding structures.

[0010] Further, the width of the protruding structure is not greater than the distance between the protruding structure and the side of the anti-vibration bottom plate, so that the width of the elastic pad can be greater than the width of the protruding structure, thereby increasing the contact area of the buffer.

[0011] Further, the distance between the two adjacent protruding structures is not less than the distance between the protruding structure and the side of the anti-vibration bottom plate, so that the size of the elastic pad in the middle of the three elastic pads is greater than the size of the other two elastic pads, thereby ensuring that the middle part of the anti-vibration structure is stably supported.

[0012] Further, a plurality of threaded rods are arranged on the anti-vibration top plate, and threaded holes are arranged on the top plane of the protruding structure for the threaded rods to pass through, and the threaded rods are connected with the nuts after passing through the threaded holes. The maximum distance between the anti-vibration top plate and the anti-vibration bottom plate can be adjusted by adjusting the screwing state of the nuts and the threaded rods, so that the elastic pads with different thicknesses can be replaced.

[0013] Optionally, the anti-vibration top plate has the same size as the projection of the anti-vibration bottom plate. The size of the anti-vibration top plate and the anti-vibration bottom plate is not greater than the size of the inside of the battery shell, so that the anti-vibration structure can be placed in the battery shell and does not shake excessively in the battery shell.

[0014] Optionally, the height of the flange on the protruding structure is greater than the height of the nut. The nut can be hidden in the protruding structure, so that the nut does not protrude downward from the bottom surface of the anti-vibration bottom plate and accidentally contact the bottom surface of the battery shell.

[0015] Optionally, the top surface of the anti-vibration top plate and the bottom surface of the anti-vibration bottom plate are provided with wear-resistant layers. The wear-resistant layers reduce excessive wear on the bottom surface of the battery pack and the bottom surface of the battery shell.

[0016] Compared with the prior art, the anti-vibration structure has the advantages that the anti-vibration structure is light in size and can be placed in the battery shell together with the battery pack. The anti-vibration structure is arranged between the bottom of the battery pack and the bottom of the battery shell, and plays a role of bearing and buffering. The anti-vibration structure mainly relies on the elastic pads to play a damping effect. When the battery pack is subjected to vibration, the anti-vibration top plate and the elastic pads cooperate to increase the contact area of the buffer, thereby reducing the vibration amplitude of the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1is a disassembled schematic view of the anti-vibration structure of the embodiment 1 of the utility model;

[0018] Figure 2 is a use effect schematic view of the anti-vibration structure of the embodiment 1;

[0019] Figure 3 is a front view schematic view of the anti-vibration structure of the embodiment 1 of the utility model;

[0020] Figure 4 is a disassembled schematic view of the anti-vibration structure of the embodiment 2 of the utility model;

[0021] Relevant mark in drawing: 10-battery pack, 20-anti-vibration structure;1-anti-vibration top plate, 2-anti-vibration bottom plate, 3-elastic pad, 4-protruding structure, 5-wear-resistant layer, 11-screw rod, 21-nut, 41-flange, 42-top plane, 43-through hole. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] Embodiment 1:

[0024] The embodiment provides a kind of anti-vibration structure for lithium battery module, as shown in Figure 1 It mainly includes anti-vibration top plate 1, elastic pad 3, anti-vibration bottom plate 2, anti-vibration top plate 1, anti-vibration bottom plate 2 usually is made of metal profile to improve structural strength, and elastic pad 3 is usually elastic rubber pad. Anti-vibration bottom plate 2 has protruding structure 4, which is located in the middle position of the top surface of anti-vibration bottom plate 2, the extension direction of protruding structure 4 is parallel to one side of anti-vibration bottom plate 2, and protruding structure 4 includes: a pair of flanges 41 extending upward from the surface of anti-vibration bottom plate 2, and top plane 42 connected with two flanges 41, as seen from the longitudinal section of anti-vibration bottom plate 2, the middle position of anti-vibration bottom plate 2 is concave upward by a part, elastic pad 3 is arranged on the top surface area outside protruding structure 4 of anti-vibration bottom plate 2, i.e. is arranged in the two side of anti-vibration bottom plate 2, elastic pad 3 is clamped between anti-vibration top plate 1 and anti-vibration bottom plate 2, the thickness of elastic pad 3 is greater than the height of flange 41, and anti-vibration top plate 1 and the top plane of protruding structure 4 are fixedly connected by screw rod 11 and nut 21.

[0025] The purpose of not directly placing the elastic pad between the battery pack and the battery shell is that, since the battery pack has a certain weight, if the battery pack is directly pressed on the elastic pad, the elastic pad will be deformed greatly, and long-term use will cause irreversible problems to the elasticity of the elastic pad. Therefore, the elastic pad is placed between the anti-vibration top plate and the anti-vibration bottom plate in the embodiment, the anti-vibration top plate directly contacts the battery pack, uniformly bears the weight or vibration of the battery pack, and the elastic pad is used to buffer the impact force from the anti-vibration top plate.

[0026] Before the battery pack is assembled into the battery shell, the anti-vibration structure 20 is first placed in the battery shell, the anti-vibration top plate of the anti-vibration structure 20 is upward, and then the battery pack 10 is placed for packaging. In this way, the anti-vibration structure is arranged between the battery pack and the battery shell, and when the lithium battery encounters a vibration environment, the anti-vibration structure 20 can reduce the vibration of the battery pack 10, thereby avoiding the connection of the top part of the battery pack from being loose. The use effect diagram of the anti-vibration structure can be seen from the figure. Figure 2

[0027] In the embodiment, the width of the protruding structure 4 is not greater than the distance between the protruding structure 4 and the side of the anti-vibration bottom plate 2. After the elastic pad is placed on the anti-vibration bottom plate, the edge of the elastic pad does not protrude outward from the anti-vibration bottom plate, and the width of the elastic pad can be greater than the width of the protruding structure. Increasing the size of the elastic pad can increase the contact area between the elastic pad and the anti-vibration top plate, thereby increasing the buffering contact area of the elastic pad.

[0028] In the embodiment, a plurality of screws 11 are arranged side by side on the bottom surface of the anti-vibration top plate 1, and the screws 11 all extend vertically downward. The protruding structure 4 of the anti-vibration bottom plate 2 is provided with a through hole 43 capable of allowing the screws 11 to pass through one by one, and the screws 11 are connected with the nuts 21 after passing through the through hole 43. In this way, the fastening state of the screws and the nuts can be adjusted to adjust the maximum distance between the anti-vibration top plate and the anti-vibration bottom plate, different thicknesses of the elastic pad can be replaced, and it is ensured that the elastic pad can be clamped between the anti-vibration top plate and the anti-vibration bottom plate. The cooperation mode of the screws and the nuts makes the anti-vibration structure convenient to disassemble and assemble.

[0029] In the embodiment, the shape and size of the anti-vibration top plate 1 are the same as the projection size of the anti-vibration bottom plate 2. The size of the anti-vibration top plate and the anti-vibration bottom plate does not exceed the size of the inside of the battery shell, so that the anti-vibration structure can be placed in the battery shell and does not shake excessively in the battery shell. Moreover, the height of the anti-vibration structure is not very high, and the height of the anti-vibration structure in the embodiment is about 8 cm, and the overall shape is relatively flat.

[0030] In the embodiment, the height of the flange 41 on the protruding structure 4 is designed to be greater than the height of the nut 21. It is ensured that the nut can be hidden in the protruding structure, and the nut does not protrude downward from the bottom surface of the anti-vibration bottom plate to accidentally contact the bottom surface of the battery shell. ​

[0031] The top surface of the anti-vibration top plate 1 and the bottom surface of the anti-vibration bottom plate 2 are provided with wear-resistant layers 5, as shown in the figure. Figure 3 For example, a wear-resistant alloy layer is added by means of surfacing welding, so as to reduce the excessive wear of the bottom surface of the battery pack and the bottom surface of the battery shell.

[0032] Embodiment 2

[0033] The embodiment provides an anti-vibration structure for a lithium battery module, as shown in the figure. Figure 4 Different from the technical scheme of embodiment 1, the anti-vibration bottom plate 2 of the embodiment has two protruding structures 4, which are symmetrically distributed about the central axis of the anti-vibration bottom plate 2, and each of the space between the two protruding structures 4 and the outer side of the protruding structure 4 is provided with an elastic pad 3, that is, a total of three elastic pads, and then the elastic pad 3 is clamped between the anti-vibration top plate 1 and the anti-vibration bottom plate 2. Similarly, the thickness of the elastic pad 3 is greater than the height of the flange 41, and the anti-vibration top plate 1 and the top plane 42 of the protruding structure 4 are fixedly connected through the screw rod 11 and the nut 21.

[0034] The three elastic pads in the anti-vibration structure of the embodiment, the distance between the two adjacent protruding structures 4 is not less than the distance between the protruding structure 4 and the side of the anti-vibration bottom plate 2, which makes the size of the elastic pad in the middle of the three elastic pads greater than that of the other two elastic pads. Through the supporting and buffering effect of the three elastic pads, the middle part of the anti-vibration structure can be stably supported, and the service life of the anti-vibration structure can be improved. Increasing the number of elastic pads can avoid the gradual decrease of the elasticity of the elastic pads after a long time of use.

[0035] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the inventive concept, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A vibration damping structure for lithium battery modules, characterized in that, The anti-vibration top plate (1), the elastic pad (3), and the anti-vibration bottom plate (2) are provided with a convex structure (4), which comprises a pair of flanges (41) extending upward from the surface of the anti-vibration bottom plate (2), and a top plane (42) connected with the two flanges (41). The elastic pad (3) is arranged on the top surface of the anti-vibration bottom plate (2) outside the convex structure (4), and is clamped between the anti-vibration top plate (1) and the anti-vibration bottom plate (2). The thickness of the elastic pad (3) is greater than the height of the flange (41). The anti-vibration top plate (1) and the top plane (42) of the convex structure (4) are fixedly connected by a screw rod (11) and a nut (21).

2. The anti-vibration structure for a lithium battery module according to claim 1, wherein The anti-vibration bottom plate (2) is provided with a convex structure (4), and two elastic pads (3) are arranged on the outer sides of the convex structure (4) of the anti-vibration bottom plate (2).

3. The anti-vibration structure for a lithium battery module according to claim 1, wherein The anti-vibration bottom plate (2) is provided with two spaced convex structures (4), and the elastic pads (3) are arranged between adjacent convex structures (4) and on the outer sides of the convex structures (4).

4. The anti-vibration structure for a lithium battery module according to claim 2 or 3, characterized in that, The width of the convex structure (4) is not greater than the distance between the convex structure (4) and the side of the anti-vibration bottom plate (2).

5. The anti-vibration structure for a lithium battery module according to claim 3, wherein The distance between the two adjacent convex structures (4) is not less than the distance between the convex structure (4) and the side of the anti-vibration bottom plate (2).

6. The anti-vibration structure for a lithium battery module according to claim 2 or 3, wherein A plurality of screw rods (11) are arranged on the anti-vibration top plate (1), and a through hole (43) is arranged on the top plane (42) of the convex structure (4) for the screw rod (11) to pass through. After the screw rod (11) passes through the through hole (43), it is connected with the nut (21).

7. The anti-vibration structure for a lithium battery module according to claim 1, wherein The shape and size of the anti-vibration top plate (1) are the same as the projection size of the anti-vibration bottom plate (2).

8. The anti-vibration structure for a lithium battery module according to claim 1, wherein The height of the flange (41) on the convex structure (4) is greater than the height of the nut (21).

9. The anti-vibration structure for a lithium battery module according to claim 1, wherein The top surface of the anti-vibration top plate (1) and the bottom surface of the anti-vibration bottom plate (2) are provided with a wear-resistant layer (5).

Images