A shock-absorbing battery pack

Abstract

This utility model relates to the field of battery technology and discloses a shock-absorbing battery pack, including a shell with a first side opening and a second side opening; a cell support disposed within the shell; an elastic strip for shock absorption, disposed between the shell and the cell support, and detachably connected to the cell support; the elastic strip includes an arc surface, the protruding end of which contacts the inner wall of the shell, and the tangent direction of the arc surface extends from the first side opening towards the second side opening; and a cell disposed within the cell support. This utility model achieves the technical effect of shock absorption, thereby ensuring the lifespan and safety performance of the battery pack.

Description

Technical Field

[0001] This utility model belongs to the field of battery technology, specifically relating to a shock-absorbing battery pack. Background Technology

[0002] Lithium-ion batteries are widely used in light electric vehicles and other fields due to their advantages of high density and long range. As the core energy storage unit of lithium-ion batteries, the performance and reliability of the battery pack are of paramount importance.

[0003] A battery pack mainly consists of a casing and battery cells. Multiple individual battery cells inside the casing are combined in series and / or parallel to achieve the required voltage and capacity. To ensure the electrical connection between the battery cells and the overall structural stability of the battery pack, metal connecting pieces or flexible circuit boards are usually used to interconnect the battery cells, and they are connected to the external output terminals of the battery management system through busbars.

[0004] However, in real-world applications, battery packs inevitably encounter various complex mechanical vibration and impact environments. Continuous vibration and sudden impacts can affect the internal structure of the battery pack. For example, the cells may experience slight relative displacement or vibration within the casing. Long-term accumulation of these slight displacements or high-frequency vibrations can cause friction or scraping between the cells and the casing, potentially leading to cell damage and posing safety hazards such as short circuits, leakage, or even fire and explosion. Summary of the Invention

[0005] To address the shortcomings of the existing technology, this utility model provides a shock-absorbing battery pack with an elastic strip that is easy to assemble. When the battery pack is in a bumpy operating condition, the elastic strip provides a shock-absorbing effect by squeezing the outer shell, which helps reduce the possibility of cell damage and ensures the battery pack's lifespan and safety performance.

[0006] The technical effects to be achieved by this utility model are realized through the following technical aspects:

[0007] This utility model provides a shock-absorbing battery pack, including a housing with a first side opening and a second side opening; a cell support disposed within the housing; an elastic strip for shock absorption, the elastic strip being disposed between the housing and the cell support, and detachably connected to the cell support, the elastic strip including an arc surface, the protruding end of the arc surface contacting the inner wall of the housing, and the tangent direction of the arc surface extending from the first side opening towards the second side opening; and a cell disposed within the cell support.

[0008] In some implementations, the cell support is provided with multiple protruding ridges, which surround and form an installation area, and the elastic strip is embedded in the installation area.

[0009] In some implementations, the outer casing is provided with sealing plates in both the first side opening and the second side opening. The sealing plates are located at both ends of the cell support and are sealed to the outer casing.

[0010] In some implementations, an elastic pad for shock absorption is provided between the cell support and the sealing plate.

[0011] In some implementations, a protective plate is provided on the side of the cell support away from the elastic strip, a gap space is provided between the protective plate and the inner wall of the outer casing, and a support rib is provided on the cell support to support the gap space.

[0012] In some implementations, the cell support is provided with an insulating pad for covering the protective plate. The insulating pad is detachably connected to the support and fits against the inner wall of the housing.

[0013] In some implementations, the cell support is provided with a buckle, and the insulating pad is provided with a snap-fit ​​hole, and the buckle snaps into the insulating pad within the snap-fit ​​hole.

[0014] In some implementations, the cell support has a groove, and the cell support has a connecting piece in the groove for electrically connecting the cell, and the connecting piece is electrically connected to the protection board.

[0015] In some implementations, the groove extends toward the protective plate, and the connecting piece bends along the groove toward the protective plate to electrically connect the connecting piece to the protective plate.

[0016] In some implementations, the battery cell support includes an upper frame and a lower frame, with the battery cell disposed between the upper frame and the lower frame, and the upper frame and the lower frame being detachably connected.

[0017] In summary, this utility model has at least the following advantages:

[0018] The shock-absorbing battery pack provided by this utility model has the battery cell placed inside the battery cell bracket during assembly. The battery cell bracket provides a certain degree of protection and stability to the battery cell. The elastic strip is detachably connected to the battery cell bracket. The battery cell bracket and the elastic strip are inserted into the outer shell from the first side opening or the second side opening. The curved surface facilitates the assembly and introduction of the elastic strip.

[0019] The protruding end of the elastic strip on the curved surface contacts the inner wall of the outer casing. When mechanical vibration from the external environment acts on the outer casing, the cell support will shift relative to the outer casing and squeeze the elastic strip. Alternatively, the force from the external environment may impact the outer casing, causing it to deform and squeeze the elastic strip. The elastic strip can maintain relative tension, keeping the cell support stable. This reduces the relative displacement and vibration of the cell support within the outer casing, making it difficult for the cell to rub or scratch against the outer casing, thus improving the safety of the battery pack and reducing safety risks. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a shock-absorbing battery pack according to a specific embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the battery cell and battery cell support according to a specific embodiment of the present utility model.

[0022] Figure 3 This is a schematic diagram of the sealing plate in a specific embodiment of the present utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the protective plate in a specific embodiment of the present utility model.

[0024] Figure 5 This is a front view of a shock-absorbing battery pack according to a specific embodiment of the present invention.

[0025] Figure 6 for Figure 5 A schematic diagram of the AA section.

[0026] Marked in the image:

[0027] 1. Outer shell; 11. First side opening; 12. Second side opening; 13. Sealing plate; 131. Sealing ring; 14. Elastic pad; 2. Cell bracket; 21. Raised ridge; 211. Notch; 22. Mounting area; 23. Support rib; 24. Buckle; 25. Groove; 26. Upper frame; 27. Lower frame; 3. Elastic strip; 31. Curved surface; 4. Cell; 5. Protective plate; 51. Spacing; 52. Insulating pad; 521. Snap-fit ​​hole; 6. Connecting piece. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] Example 1:

[0031] Please see Figure 1 and Figure 2 The shock-absorbing battery pack of this utility model has a cell bracket 2 and an elastic strip 3 inside the outer shell 1 to protect the cell 4. It can reduce the damage to the cell 4 caused by friction and scratches in bumpy working conditions, and ensure the life cycle and safety performance of the battery pack.

[0032] The shock-absorbing battery of this utility model includes a shell 1, on which a first side opening 11 and a second side opening 12 are provided. A cell support 2 is disposed inside the shell 1. A cell 4 is disposed inside the cell support 2. In a preferred embodiment, the cell support 2 includes an upper frame 26 and a lower frame 27, with the cell 4 sandwiched between the upper frame 26 and the lower frame 27, and the upper frame 26 and the lower frame 27 are detachably connected. Specifically, both the upper frame 26 and the lower frame 27 have multiple arrayed receiving slots. The cell 4 is disposed in the receiving slots, and multiple cells 4 are combined in series and / or parallel to achieve the required voltage and capacity. The upper frame 26 and the lower frame 27 can be locked together with bolts. The cell support 2 covers the cell 4, providing a certain degree of support and protection for the cell 4.

[0033] An elastic strip 3 for shock absorption is provided between the cell support 2 and the outer casing 1. The elastic strip 3 is detachably connected to the cell support 2. Specifically, the elastic strip 3 is preferably, but not limited to, a rubber strip. The elastic strip 3 includes an arc surface 31, the protruding end of which contacts the inner wall of the outer casing 1, and the tangent direction of the arc surface 31 extends from the first side opening 11 to the second side opening 12. The elastic strip 3 can be streamlined. The arc surface 31 facilitates the assembly and insertion of the elastic strip 3 into the outer casing 1. In some specific embodiments, multiple elastic strips 3 can be provided, spaced apart along the length of the cell support 2 to protect the cell support 2 and the cell 4 from damage during bumpy conditions.

[0034] When the shock-absorbing battery pack is in a vibrating environment, the continuous vibration causes the cell support 2 to sway inside the outer casing 1. The elastic strip 3 can limit the displacement and vibration of the cell support 2 relative to the outer casing 1 and play a shock-absorbing role for the cell support 2. The cell 4 is protected by the cell support 2 and the elastic strip 3, which can reduce the damage caused by friction and scratches between it and the outer casing 1, thereby reducing the risk of short circuit, leakage or even fire and explosion of the cell 4. When the shock-absorbing battery pack is impacted, the outer casing 1 squeezes the elastic strip 3. The relative tension of the elastic strip 3 keeps the cell support 2 stable. The elastic strip 3 can reduce the possibility of deformation of the cell support 2 and the cell 4 while providing shock absorption.

[0035] Example 2:

[0036] The difference between this embodiment and Embodiment 1 is that, please refer to... Figure 2 In this embodiment, the cell support 2 is provided with multiple protruding ridges 21. Specifically, the multiple protruding ridges 21 include staggered longitudinal sections and transverse sections, which can support the cell support 2 and the outer shell 1. An installation area 22 is formed between the multiple protruding ridges 21. An elastic strip 3 is provided in the installation area 22. The elastic strip 3 is embedded in the installation area 22, which is convenient for disassembly and assembly. The protruding end of the elastic strip 3 on the arc surface 31 protrudes to the outside of the installation area 22 to contact the inner wall of the outer shell 1. Specifically, the transverse section of the protruding ridge 21 has a notch 211 at the installation area 22 to facilitate the disassembly and assembly of the elastic strip 3.

[0037] Please see Figures 1-3 In a preferred embodiment, the outer casing 1 is provided with sealing plates 13 at both the first side opening 11 and the second side opening 12. The sealing plates 13 are located at both ends of the cell support 2 and are sealed to the outer casing 1. Specifically, a sealing ring 131 may be fitted on the outer side of the sealing plate 13. The sealing plate 13 is sealed to the outer casing 1 through the sealing ring 131 to prevent moisture and impurities from the external environment from entering the interior of the outer casing 1. Furthermore, the sealing plate 13 is provided with reinforcing ribs to increase the compressive strength of the sealing plate 13 against external impacts, further protecting the cell 4 and the cell support 2. Specifically, a cover plate is provided on the side of the sealing plate 13 away from the cell support 2. The cover plate is detachably connected to the sealing plate 13 and is provided with a plug.

[0038] Please see Figure 3 In some specific embodiments, an elastic pad 14 is provided between the sealing plate 13 and the cell support 2. The sealing plate 13 has an assembly groove, and the elastic pad 14 is disposed in the assembly groove. Specifically, the elastic pad 14 is preferably, but not limited to, a rubber pad or a sponge pad, and two elastic pads 14 can be provided. The two elastic pads 14 can be respectively disposed on one side of the upper frame 26 and one side of the lower frame 27. The provision of the elastic pad 14 and the elastic strip 3 can protect the cell support 2 and the cell 4 in both the lateral and longitudinal directions, respectively, reducing the impact of complex vibration environment on the cell 4 and the cell support 2.

[0039] Please see Figures 4-6 In a preferred embodiment, a protective plate 5 is provided on the side of the cell support 2 away from the elastic strip 3. The protective plate 5 is detachably connected to the cell support 2, specifically, the protective plate 5 and the cell support 2 can be assembled using screws. A space 51 is provided between the protective plate 5 and the inner wall of the outer casing 1. The space 51 provides space for the installation of the protective plate 5, and when an external impact environment acts on the outer casing 1, the space 51 can reduce the impact of deformation of the outer casing 1 on the protective plate 5. The cell support 2 is provided with supporting ribs 23 for supporting the space 51, which helps to further improve the internal structural strength of the outer casing 1. The protective plate 5 is electrically connected to the plug.

[0040] In some specific embodiments, the cell support 2 is provided with an insulating pad 52 for covering the protective plate 5. The insulating pad 52 is detachably connected to the support and fits against the inner wall of the outer shell 1. Specifically, the insulating pad 52 covers the top surface of the upper frame 26, the protective plate 5, and the bottom surface of the lower frame 27. Furthermore, the cell support 2 is provided with a buckle 24. Specifically, the buckle 24 can be annular protrusions and multiple buckles 24 are provided. Multiple buckles 24 are located on the top surface of the upper frame 26 and the bottom surface of the lower frame 27, respectively. The insulating pad 52 has a snap-fit ​​hole 521. The buckle 24 snaps into the insulating pad 52 in the snap-fit ​​hole 521, which helps to improve the convenience of installing and removing the insulating pad 52.

[0041] The cell support 2, protection board 5 and insulating pad 52 have a compact structure and reasonable layout. The elastic strip 3, elastic pad 14 and space 51 help to fully ensure the shock absorption effect inside the outer casing 1, reduce the possibility of damage to the cell 4 and protection board 5, and ensure the life cycle and safety performance of the battery pack.

[0042] Example 3:

[0043] The difference between this embodiment and Embodiment 1 is that, please refer to... Figure 4 In this embodiment, the cell support 2 has a groove 25, and the cell support 2 has a connecting piece 6 for electrically connecting the cell 4 in the groove 25. Specifically, the connecting piece 6 is welded to the positive or negative electrode of the cell 4 to realize the series and / or parallel connection of the cell 4. The connecting piece 6 is electrically connected to the protection board 5.

[0044] In a preferred embodiment, the groove 25 extends toward the protective plate 5, and the connecting piece 6 bends along the groove 25 toward the protective plate 5 to electrically connect the connecting piece 6 to the protective plate 5. The groove 25 is configured to provide space for the connecting piece 6 to be received and assembled. Specifically, an insulating pad 52 is provided on the outside of the groove 25. The insulating pad 52 cooperates with the groove 25 to further ensure the compactness of the structure while protecting the connecting piece 6.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0048] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A cushioned battery pack, characterized by, include The outer casing (1) includes a first side opening (11) and a second side opening (12); The cell support (2) is disposed inside the outer casing (1); An elastic strip (3) for shock absorption is provided between the outer shell (1) and the battery cell support (2), and the battery cell support (2) is detachably connected. The elastic strip (3) includes an arc surface (31), the protruding end of which contacts the inner wall of the outer shell (1), and the tangential direction of the arc surface (31) extends from the first side opening (11) toward the second side opening (12). The battery cell (4) is located inside the battery cell support (2).

2. The cushioning battery pack of claim 1, wherein, The battery cell support (2) is provided with a plurality of protruding ridges (21), and the plurality of protruding ridges (21) surround to form an installation area (22), and the elastic strip (3) is embedded in the installation area (22).

3. The cushioned battery pack of claim 1, wherein, The outer casing (1) is provided with sealing plates (13) in both the first side opening (11) and the second side opening (12). The sealing plates (13) are located at both ends of the battery cell support (2) and are sealed to the outer casing (1).

4. The cushioning battery pack of claim 3, wherein, An elastic pad (14) for shock absorption is provided between the cell support (2) and the sealing plate (13).

5. The cushioned battery pack of claim 1, wherein, A protective plate (5) is provided on the side of the cell support (2) away from the elastic strip (3). A space (51) is provided between the protective plate (5) and the inner wall of the outer shell (1). A support rib (23) for supporting the space (51) is provided on the cell support (2).

6. The cushioning battery pack of claim 5, wherein, An insulating pad (52) for covering the protective plate (5) is provided on the battery cell bracket (2). The insulating pad (52) is detachably connected to the bracket and fits against the inner wall of the outer shell (1).

7. The cushioned battery pack of claim 6, wherein, The battery cell support (2) is provided with a buckle (24), and the insulating pad (52) is provided with a snap-fit ​​hole (521). The buckle (24) snaps into the insulating pad (52) in the snap-fit ​​hole (521).

8. The shock-absorbing battery pack according to claim 5, characterized in that, The cell support (2) has a groove (25) and a connecting piece (6) for electrically connecting the cell (4) is provided in the groove (25). The connecting piece (6) is electrically connected to the protection plate (5).

9. The cushioning battery pack of claim 8, wherein, The groove (25) extends toward the protective plate (5), and the connecting piece (6) bends along the groove (25) toward the protective plate (5) so that the connecting piece (6) is electrically connected to the protective plate (5).

10. The cushioning battery pack of claim 1, wherein, The battery cell support (2) includes an upper frame (26) and a lower frame (27), and the battery cell (4) is disposed between the upper frame (26) and the lower frame (27). The upper frame (26) and the lower frame (27) are detachably connected.

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