Vibration reduction structure and battery pack with same

Abstract

The utility model provides a vibration damping structure and a battery pack with the vibration damping structure, the vibration damping structure comprises a support body, a first mounting cavity is arranged in the support body, and the first mounting cavity extends along a first direction; the first end of the first moving part is connected with the second target workpiece, the second end of the first moving part is arranged in the first mounting cavity and comprises a first end face and a second end face which are oppositely arranged in the first direction, and a first buffering cavity is formed between the first end face and the supporting body; a second buffering cavity is formed between the second end face and the supporting body. A second mounting cavity is further formed in the first moving part, and the second mounting cavity extends in the second direction; one end of the second moving part is connected with the second target workpiece, the other end of the second moving part is arranged in the second mounting cavity, and a third buffering cavity is formed between the end, away from the second target workpiece, of the second moving part and the first moving part. The problem that in the prior art, a vibration reduction structure of an outdoor mobile power source is low in reliability is solved.

Description

Technical Field

[0001] This utility model relates to the field of battery pack vibration reduction technology, specifically to a vibration reduction structure and a battery pack having the same. Background Technology

[0002] In recent years, with the continuous development of energy storage technology, lithium-ion battery packs have become the mainstream solution for energy storage. Lithium-ion batteries, with their excellent cycle performance and energy density, have become ideal energy storage units, and battery packs, as the carriers of lithium-ion batteries, play a role in battery pack organization and battery protection. Battery packs are typically composed of multiple battery cells connected in series or parallel. Series-connected battery packs have high voltage and small capacity, making them suitable for rechargeable energy storage; parallel-connected battery packs have large capacity and low voltage, making them suitable for discharge-type energy storage. Because the voltage of lithium-ion battery cells is inconsistent during charging and discharging, series-connected battery packs experience voltage division, while parallel-connected battery packs, due to voltage inconsistencies, can lead to overcharging or over-discharging of battery cells, reducing battery life. Therefore, to improve battery pack performance, it is necessary to design both series- or parallel connections and to implement a reasonable structural design for the battery pack.

[0003] Currently, an increasing number of outdoor energy storage power solutions are emerging to meet the needs of various scenarios, including outdoor emergency response, outdoor work, outdoor tourism, home use, and commercial applications. Emergency power supplies, in particular, operate in complex environments, often requiring use in harsh conditions such as extreme temperatures, dust, water, sandstorms, high altitudes, and high salt spray. Furthermore, most outdoor power supplies use ternary lithium-ion battery cells, which pose a risk of fire and explosion upon impact.

[0004] To improve the stability of outdoor energy storage power supplies, existing technologies employ vibration damping methods such as placing springs or rubber pads between the battery and the casing. However, during prolonged use, springs or rubber pads are prone to aging, have low adaptability to harsh environments, and have a short service life, thus failing to guarantee the safety of outdoor portable power supplies. Utility Model Content

[0005] The main objective of this invention is to provide a vibration damping structure and a battery pack having the same, in order to solve the problem of low reliability of vibration damping structures in existing outdoor portable power supplies.

[0006] To achieve the above objectives, according to one aspect of the present invention, a vibration damping structure is provided, disposed between a first target workpiece and a second target workpiece. The vibration damping structure includes: a support body disposed on the first target workpiece, wherein a first mounting cavity is disposed within the support body and extends along a first direction; a first moving component, wherein a first end of the first moving component is connected to the second target workpiece, and a second end of the first moving component is disposed within the first mounting cavity, the second end including a first end face and a second end face disposed opposite to each other along the first direction, wherein a first buffer cavity is disposed between the first end face and the support body, and a second buffer cavity is disposed between the second end face and the support body, wherein the first moving component is movably disposed along the first direction to buffer the first moving component through the first buffer cavity and the second buffer cavity; a second mounting cavity is also disposed within the first moving component and extends along a second direction; and a second moving component, wherein one end of the second moving component is connected to the second target workpiece, and the other end is disposed within the second mounting cavity, wherein a third buffer cavity is disposed between the end of the second moving component away from the second target workpiece and the first moving component, and the second moving component is movably disposed along the second direction to buffer the second moving component through the third buffer cavity.

[0007] Furthermore, the vibration damping structure also includes: a first sealing component disposed on and connected to the first end face, the first sealing component being in contact with the inner wall of the first mounting cavity; and a second sealing component disposed on and connected to the second end face, the second sealing component being in contact with the inner wall of the first mounting cavity.

[0008] Furthermore, the first moving component includes: a first body extending along a second direction, with a second mounting cavity and a third buffer cavity respectively disposed within the first body; a second body connected to the first body and extending along a first direction, with a first end face and a second end face respectively disposed on the second body, and the second body disposed within the first mounting cavity and in clearance fit with the first mounting cavity.

[0009] Furthermore, the support body is provided with a first through hole, the first body passes through the first through hole and is connected to the second body; wherein, the first body and the first through hole are in clearance fit.

[0010] Furthermore, the vibration damping structure also includes: a third sealing component, disposed in the second mounting cavity and connected to the second moving component, the second moving component driving the third sealing component to move, and a third buffer cavity disposed between the third sealing component and the first moving component.

[0011] Furthermore, the first moving part is provided with a second through hole, which extends along a second direction, and the end of the second moving part away from the second target workpiece passes through the second through hole and is connected to the third sealing part.

[0012] Furthermore, inert gases are respectively provided in the first buffer chamber, the second buffer chamber, and the third buffer chamber; when the first moving part is in the initial position, the gas pressure in the first buffer chamber and the second buffer chamber is the same.

[0013] Furthermore, the second moving part has a connecting end face that connects to the second target workpiece, and a buffer layer is provided on the connecting end face, which can be flexibly set.

[0014] According to another aspect of the present invention, a battery pack is provided, including a battery body, a housing, and a vibration damping structure. The vibration damping structure is disposed between the battery body and the housing and is connected to both the battery body and the housing. There are multiple vibration damping structures, which are spaced apart along the circumferential direction of the battery body.

[0015] The vibration reduction structure is the same as described above.

[0016] Furthermore, the vertical distance between the battery body and the bottom surface of the casing is H1, and the travel distance of the vibration damping structure in the vertical direction is H2; where H1 > H2.

[0017] Applying the technical solution of this utility model, the vibration damping structure provided in this application is disposed between a first target workpiece and a second target workpiece to buffer the interaction force between the first target workpiece and the second target workpiece. The vibration damping structure includes a support body, a first moving component, and a second moving component. A first mounting cavity is provided within the support body, extending along a first direction. A first end of the first moving component is connected to the second target workpiece, and a second end of the first moving component is disposed within the first mounting cavity. The second end includes a first end face and a second end face disposed opposite each other along the first direction. A first buffer cavity is provided between the first end face and the support body, and a second buffer cavity is provided between the second end face and the support body. The first moving component is movably disposed along the first direction to buffer itself through the first and second buffer cavities. A second mounting cavity is also provided within the first moving component, extending along a second direction. One end of the second moving component is connected to the second target workpiece, and the other end is disposed within the second mounting cavity. A third buffer cavity is provided between the end of the second moving component away from the second target workpiece and the first moving component. The second moving component is movably disposed along the second direction to buffer itself through the third buffer cavity. The design of the first, second, and third buffer chambers effectively buffers impact forces through the compression and flow of fluids (gas or liquid). This linear or non-linear buffering effect can automatically adjust according to the magnitude and direction of the impact force, providing more efficient vibration reduction protection and adapting to harsh environments, thus ensuring the stability of the vibration reduction effect. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of an embodiment of the vibration reduction structure according to the present invention is shown;

[0020] Figure 2 A cross-sectional view of a battery pack according to the present invention is shown;

[0021] Figure 3 A top view of the battery pack according to the present invention is shown.

[0022] The above figures include the following reference numerals:

[0023] 100. Support body; 110. First mounting cavity; 120. First buffer cavity; 130. Second buffer cavity; 140. First through hole; 200. First moving component; 201. First end; 202. Second end; 203. First end face; 204. Second end face; 205. Second mounting cavity; 206. Third buffer cavity; 210. First body; 220. Second body; 230. Second through hole; 300. Second moving component; 400. First sealing component; 500. Second sealing component; 600. Third sealing component;

[0024] 700, Battery body; 800, Housing; 900, Vibration damping structure. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Please refer to Figure 1This application provides a vibration damping structure disposed between a first target workpiece and a second target workpiece. The vibration damping structure includes: a support body 100 disposed on the first target workpiece, the support body 100 having a first mounting cavity 110 extending along a first direction; a first moving component 200, the first end 201 of the first moving component 200 being connected to the second target workpiece, the second end 202 of the first moving component 200 being disposed within the first mounting cavity 110, the second end 202 including a first end face 203 and a second end face 204 disposed opposite to each other along the first direction, a first buffer cavity 120 being disposed between the first end face 203 and the support body 100, and a buffer cavity 120 being disposed between the second end face 204 and the support body 100. The first moving component 200 is movably disposed along a first direction in the second buffer cavity 130, so as to buffer the first moving component 200 through the first buffer cavity 120 and the second buffer cavity 130; the first moving component 200 is also provided with a second mounting cavity 205, which extends along a second direction; the second moving component 300 has one end connected to the second target workpiece and the other end disposed in the second mounting cavity 205, and a third buffer cavity 206 is provided between the end of the second moving component 300 away from the second target workpiece and the first moving component 200, and the second moving component 300 is movably disposed along the second direction so as to buffer the second moving component 300 through the third buffer cavity 206.

[0027] According to the vibration damping structure provided in this application, a first target workpiece and a second target workpiece are disposed between the first target workpiece and the second target workpiece to buffer the interaction force between them. The vibration damping structure includes a support body 100, a first moving component 200, and a second moving component 300. A first mounting cavity 110 is provided within the support body 100, extending along a first direction. A first end 201 of the first moving component 200 is connected to the second target workpiece, and a second end 202 of the first moving component 200 is disposed within the first mounting cavity 110. The second end 202 includes a first end face 203 and a second end face 204 disposed opposite each other along the first direction. A first buffer cavity 120 is provided between the first end face 203 and the support body 100. A second buffer cavity 130 is provided between the end face 204 and the support body 100. The first moving component 200 is movably disposed along a first direction to buffer the first moving component 200 through the first buffer cavity 120 and the second buffer cavity 130. A second mounting cavity 205 is also provided inside the first moving component 200, extending along a second direction. One end of the second moving component 300 is connected to the second target workpiece, and the other end is disposed in the second mounting cavity 205. A third buffer cavity 206 is provided between the end of the second moving component 300 away from the second target workpiece and the first moving component 200. The second moving component 300 is movably disposed along the second direction to buffer the second moving component 300 through the third buffer cavity 206. The arrangement of the first buffer cavity 120, the second buffer cavity 130, and the third buffer cavity 206 can effectively buffer the impact force through the compression and flow of fluid (gas or liquid). This linear or non-linear buffering effect can automatically adjust according to the magnitude and direction of the impact force, providing more efficient vibration reduction protection and adapting to harsh environments, thus ensuring the stability of the vibration reduction effect.

[0028] Preferably, the first direction is perpendicular to the second direction.

[0029] Specifically, the vibration damping structure further includes: a first sealing component 400, disposed on and connected to the first end face 203, the first sealing component 400 fitting against the inner wall of the first mounting cavity 110; and a second sealing component 500, disposed on and connected to the second end face 204, the second sealing component 500 fitting against the inner wall of the first mounting cavity 110. The tight fit between the first sealing component 400 and the second sealing component 500 and the inner wall of the first mounting cavity 110 effectively enhances the sealing performance of the buffer cavity, preventing leakage of fluid gas or liquid within the cavity during operation, and ensuring the stable vibration damping performance of the vibration damping structure under long-term or harsh environments. Good sealing prevents dust, moisture, or other impurities from entering the buffer cavity, reducing wear and corrosion of moving parts and extending the service life of the vibration damping structure.

[0030] Enhanced sealing performance can prevent potential safety risks caused by fluid leakage when the battery pack is subjected to impact, thus improving the safety of the entire energy storage system.

[0031] In a specific implementation, the first moving component 200 includes: a first body 210 extending along a second direction, with a second mounting cavity 205 and a third buffer cavity 206 respectively disposed within the first body 210; and a second body 220 connected to the first body 210 and extending along a first direction, with a first end face 203 and a second end face 204 respectively disposed on the second body 220, and the second body 220 disposed within the first mounting cavity 110 and clearance-fitted with the first mounting cavity 110. By decomposing the first moving component 200 into the first body 210 and the second body 220 extending in different directions, buffering effects can be achieved along the first and second directions respectively. This design enables the vibration damping structure to effectively absorb and disperse impact forces from multiple directions, improving overall vibration damping capacity and environmental adaptability. The connection method of the first body 210 and the second body 220 allows the first moving component 200 to move more stably within the first mounting cavity 110 when subjected to impact. Meanwhile, the clearance fit between the second body 220 and the first mounting cavity 110 can reduce the frictional resistance between the moving part and the supporting body 100, ensuring that the moving part can respond quickly when subjected to force, and achieving the best vibration reduction effect.

[0032] The second mounting cavity 205 and the third buffer cavity 206 provided inside the first body 210 enable the entire vibration reduction structure to achieve multi-directional vibration reduction function within a limited space, effectively optimizing the utilization of internal space. It is suitable for equipment with strict space requirements, such as outdoor energy storage power supplies and mobile electronic devices.

[0033] Furthermore, the support body 100 is provided with a first through hole 140, and the first body 210 passes through the first through hole 140 and is connected to the second body 220; wherein, the first body 210 and the first through hole 140 are clearance-fitted. The clearance fit of the first body 210 within the first through hole 140 allows the first body 210 to have a certain degree of freedom in the lateral or radial direction, which increases the damping capacity of the vibration reduction structure in different directions. When an external force acts on the battery pack or the first target workpiece, the first body 210 can not only move in the first direction, but may also slightly deflect laterally, further dispersing and absorbing the impact force.

[0034] In practical implementation, the vibration damping structure further includes: a third sealing component 600, disposed within the second mounting cavity 205 and connected to the second moving component 300; the second moving component 300 drives the third sealing component 600 to move; and a third buffer cavity 206 disposed between the third sealing component 600 and the first moving component 200. The addition of the third sealing component 600 improves the sealing performance of the second mounting cavity 205, ensuring that the fluid gas or liquid in the third buffer cavity 206 does not leak, thereby maintaining the stability and reliability of the buffering effect. The third buffer cavity 206 formed between the third sealing component 600 and the first moving component 200 makes the vibration damping effect in the second direction more significant. When the second moving component 300 moves under the action of external force, the third sealing component 600 can move more closely following, compressing the fluid in the third buffer cavity 206, achieving more effective linear buffering.

[0035] Preferably, the first sealing component 400, the second sealing component 500, and the third sealing component 600 are all made of rubber.

[0036] Furthermore, the first moving component 200 is provided with a second through hole 230, which extends along a second direction. The end of the second moving component 300 furthest from the second target workpiece passes through the second through hole 230 and connects to the third sealing component 600. The second through hole 230 allows the second moving component 300 to move freely in a second direction perpendicular to the moving direction of the first moving component 200, thereby absorbing and dispersing impact forces in multiple directions and providing an all-around vibration reduction effect. The connection between the third sealing component 600 and the second moving component 300 further improves the sealing performance of the third buffer chamber 206, ensuring that the fluid in the buffer chamber does not leak when the second moving component 300 moves along the second direction, maintaining good buffering performance. Simultaneously, the design of the sealing component can adapt to moving components of different sizes and shapes, improving the system's compatibility and flexibility.

[0037] In the embodiments provided in this application, inert gases are respectively disposed in the first buffer chamber 120, the second buffer chamber 130, and the third buffer chamber 206; when the first moving component 200 is in its initial position, the gas pressure in the first buffer chamber 120 and the second buffer chamber 130 is the same. Inert gases, such as nitrogen and argon, have stable chemical properties and are not easily reacted with other substances. Filling the buffer chamber with inert gases can prevent the gases from undergoing chemical changes in harsh environments such as high temperature and high humidity, thereby ensuring that the buffer chambers can provide a stable buffering effect under any environmental conditions. When the first moving component 200 is in its initial position, the gas pressure in the first buffer chamber 120 and the second buffer chamber 130 is the same. This design can ensure that the buffering process in the first direction has a linear characteristic, that is, as the displacement of the first moving component 200 increases, the gas pressure in the buffer chamber will also increase linearly, thereby achieving smooth absorption and dispersion of impact force and providing a more controllable buffering effect. Inert gases are not prone to condensation or deposition. Using inert gases can reduce wear between sealing components and moving components and extend the service life of the vibration damping structure. Meanwhile, the filling with inert gas prevents fluid leakage, reduces the frequency of maintenance and inspection, and lowers operating costs. Filling the buffer chamber with inert gas allows for more effective use of the gas's compressibility to absorb and transmit impact forces. Compared to liquids or other gases, inert gas provides a faster and more efficient vibration damping response, optimizing the overall system's vibration damping efficiency.

[0038] The second moving component 300 has a connecting end face that connects to the second target workpiece. A buffer layer is provided on the connecting end face, and the buffer layer can be elastically configured. The elastic characteristics of the buffer layer can complement the buffer cavity in the entire vibration damping structure, further enhancing the vibration damping effect. When the second moving component moves along the second direction, the buffer layer can further absorb the impact force, making the entire vibration damping process smoother and more gradual, avoiding damage to the second target workpiece from instantaneous force peaks. The addition of the buffer layer makes the connection between the second moving component and the second target workpiece more gentle, reducing the risk of structural fatigue and damage caused by hard connections. Especially under high-frequency vibration or micro-impact conditions, the elastic effect of the buffer layer can effectively reduce the transmission of vibration, improving the durability and reliability of the entire equipment.

[0039] like Figure 2 and Figure 3 As shown, this application also provides a battery pack, including a battery body 700, a housing 800, and a vibration damping structure 900. The vibration damping structure 900 is disposed between the battery body 700 and the housing 800, and is connected to both the battery body 700 and the housing 800. There are multiple vibration damping structures 900, which are spaced apart along the circumferential direction of the battery body 700. The vibration damping structure is the vibration damping structure 900 of the above embodiment.

[0040] Multiple vibration damping structures 900 are spaced apart along the circumferential direction of the battery body 700, enabling multi-directional protection of the battery body in three-dimensional space. Regardless of the direction of impact, the impact force can be effectively absorbed and dispersed, significantly improving the safety and reliability of the battery pack. The pneumatic buffering principle employed in the vibration damping structure allows for efficient absorption and conversion of impact energy through gas compression within the chamber when the battery is subjected to impact, preventing performance degradation or damage caused by impact and extending battery life.

[0041] The vertical distance between the bottom surface of the battery body 700 and the housing 800 is H1, and the vertical travel distance of the vibration damping structure 900 is H2; where H1 > H2.

[0042] Since the vertical distance between the H1 battery body and the bottom surface of the casing is greater than the travel distance of the H2 vibration damping structure in the vertical direction, this ensures that when the battery is impacted, the vibration damping structure has enough space to buffer the movement without hard collision with the casing or battery body, effectively avoiding secondary damage and improving the durability of the battery pack.

[0043] The battery pack vibration damping structure of this application has its main body installed on the battery casing, with one end connected to the battery. After the battery is installed, there is a gap between it and the casing in the vertical direction. This gap is greater than the working stroke of the vibration damping structure in the vertical direction, so as to ensure that the vibration damping structure will not hit the battery casing during operation.

[0044] The battery pack has a vibration damping structure installed at opposite positions. In the first direction, the strokes of the first buffer chamber 120 and the second buffer chamber 130 of the two corresponding vibration damping structures are the same. In the non-operating state, the air pressure in the first buffer chamber 120 and the second buffer chamber 130 is the same, and the rubber plugs (first sealing component 400 and second sealing component 500) are in a symmetrical state. In the operating state, the first sealing component 400 and the second sealing component 500 move up and down within a limited stroke, mainly by compressing the air in the sealing chamber to achieve a linear buffering effect. In the left-right direction, the strokes of the third sealing component 600 of the two corresponding vibration damping structures are also the same. In the non-operating state, the air pressure of the third sealing component 600 of the two opposing vibration damping structures is the same, and they are in a balanced and symmetrical state. In the operating state, the third sealing component 600 can move in the left-right direction to achieve a linear buffering effect in the left-right direction.

[0045] This application discloses a battery pack vibration damping structure, which differs from existing battery pack vibration damping structures. Current battery vibration damping structures primarily rely on damping springs, which are inherently unstable during vibration damping. In contrast, the pneumatic buffering method effectively achieves linear buffering when the battery pack is subjected to impact, maximizing the protection of the internal battery cells from damage during severe impacts.

[0046] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0047] According to the vibration damping structure provided in this application, a first target workpiece and a second target workpiece are disposed between the first target workpiece and the second target workpiece to buffer the interaction force between them. The vibration damping structure includes a support body 100, a first moving component 200, and a second moving component 300. A first mounting cavity 110 is provided within the support body 100, extending along a first direction. A first end 201 of the first moving component 200 is connected to the second target workpiece, and a second end 202 of the first moving component 200 is disposed within the first mounting cavity 110. The second end 202 includes a first end face 203 and a second end face 204 disposed opposite each other along the first direction. A first buffer cavity 120 is provided between the first end face 203 and the support body 100. A second buffer cavity 130 is provided between the end face 204 and the support body 100. The first moving component 200 is movably disposed along a first direction to buffer the first moving component 200 through the first buffer cavity 120 and the second buffer cavity 130. A second mounting cavity 205 is also provided inside the first moving component 200, extending along a second direction. One end of the second moving component 300 is connected to the second target workpiece, and the other end is disposed in the second mounting cavity 205. A third buffer cavity 206 is provided between the end of the second moving component 300 away from the second target workpiece and the first moving component 200. The second moving component 300 is movably disposed along the second direction to buffer the second moving component 300 through the third buffer cavity 206. The arrangement of the first buffer cavity 120, the second buffer cavity 130, and the third buffer cavity 206 can effectively buffer the impact force through the compression and flow of fluid (gas or liquid). This linear or non-linear buffering effect can automatically adjust according to the magnitude and direction of the impact force, providing more efficient vibration reduction protection and adapting to harsh environments, thus ensuring the stability of the vibration reduction effect.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vibration damping structure, disposed between a first target workpiece and a second target workpiece, characterized in that, The vibration damping structure includes: A support body (100) is disposed on the first target workpiece, and a first mounting cavity (110) is provided inside the support body (100), the first mounting cavity (110) extending along a first direction; A first moving component (200) has a first end (201) connected to the second target workpiece, and a second end (202) disposed in the first mounting cavity (110). The second end (202) includes a first end face (203) and a second end face (204) disposed opposite to each other along the first direction. A first buffer cavity (120) is disposed between the first end face (203) and the support body (100), and a second buffer cavity (130) is disposed between the second end face (204) and the support body (100). The first moving component (200) is movably disposed along the first direction to buffer the first moving component (200) through the first buffer cavity (120) and the second buffer cavity (130). The first movable component (200) is further provided with a second mounting cavity (205), which extends along a second direction; The second moving part (300) has one end connected to the second target workpiece and the other end disposed in the second mounting cavity (205). A third buffer cavity (206) is disposed between the end of the second moving part (300) away from the second target workpiece and the first moving part (200). The second moving part (300) is movably disposed along the second direction so as to buffer the second moving part (300) through the third buffer cavity (206).

2. The vibration reduction structure according to claim 1, characterized in that, The vibration damping structure also includes: A first sealing component (400) is disposed on and connected to the first end face (203), and the first sealing component (400) is in contact with the inner wall of the first mounting cavity (110). The second sealing component (500) is disposed on the second end face (204) and connected to the second end face (204), and the second sealing component (500) is in contact with the inner wall surface of the first mounting cavity (110).

3. The vibration reduction structure according to claim 1, characterized in that, The first moving component (200) includes: The first body (210) extends along the second direction, and the second mounting cavity (205) and the third buffer cavity (206) are respectively disposed in the first body (210); The second body (220) is connected to the first body (210) and extends along the first direction. The first end face (203) and the second end face (204) are respectively disposed on the second body (220). The second body (220) is disposed in the first mounting cavity (110) and is clearance-fitted with the first mounting cavity (110).

4. The vibration reduction structure according to claim 3, characterized in that, The support body (100) is provided with a first through hole (140), and the first body (210) passes through the first through hole (140) and is connected to the second body (220); The first body (210) is clearance-fitted with the first through hole (140).

5. The vibration reduction structure according to claim 1, characterized in that, The vibration damping structure also includes: The third sealing component (600) is disposed in the second mounting cavity (205) and connected to the second moving component (300). The second moving component (300) drives the third sealing component (600) to move. The third buffer cavity (206) is disposed between the third sealing component (600) and the first moving component (200).

6. The vibration reduction structure according to claim 5, characterized in that, The first moving part (200) is provided with a second through hole (230), the second through hole (230) extends along the second direction, and the end of the second moving part (300) away from the second target workpiece passes through the second through hole (230) and is connected to the third sealing part (600).

7. The vibration reduction structure according to claim 1, characterized in that, Inert gas is provided in the first buffer chamber (120), the second buffer chamber (130) and the third buffer chamber (206); When the first moving part (200) is in the initial position, the air pressure in the first buffer chamber (120) and the second buffer chamber (130) is the same.

8. The vibration reduction structure according to claim 1, characterized in that, The second moving part (300) has a connecting end face that connects to the second target workpiece, and a buffer layer is provided on the connecting end face, the buffer layer being elastically disposed.

9. A battery pack, comprising a battery body (700), a housing (800), and a vibration damping structure (900), wherein the vibration damping structure (900) is disposed between the battery body (700) and the housing (800), and the vibration damping structure (900) is connected to the battery body (700) and the housing (800) respectively; characterized in that, There are multiple vibration damping structures (900), and the multiple vibration damping structures (900) are spaced apart along the circumferential direction of the battery body (700); The vibration damping structure is the vibration damping structure (900) according to any one of claims 1 to 8.

10. The battery pack according to claim 9, characterized in that, The vertical distance between the bottom surface of the battery body (700) and the housing (800) is H1, and the vertical travel distance of the vibration damping structure (900) is H2. Where H1 > H2.

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